| Message ID | 1519037471-17668-4-git-send-email-liuxuenetmail@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
Hello. On Mon, 2018-02-19 at 11:51, Xue Liu wrote: > This is a driver for the NXP MCR20A 802.15.4 transceiver. > > The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. Please break the lines here around 72 chars so it can be sanely viewed in git log. > This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. Wow, I honetsly did not realise CSMA was not done in hardware on this chip. This can be a real problem in busy deplyoment scenarios. From the kernel stack perspective this make thes second timing critical item we migth need to have a softMAC solution for. first ACK handling and now CSMA. If anybody on this list has an interest in digging into the time constraints we have for this in 802.15.4 and find out if the current realtime infrastructure of the kernel offers us what we need for these constraints this would be very welcome! But I am drifting of the actual review of this driver. :-) > https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf > > Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> > --- > drivers/net/ieee802154/Kconfig | 11 + > drivers/net/ieee802154/Makefile | 1 + > drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ > drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ > 4 files changed, 1970 insertions(+) > create mode 100644 drivers/net/ieee802154/mcr20a.c > create mode 100644 drivers/net/ieee802154/mcr20a.h > > diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig > index 303ba41..8782f56 100644 > --- a/drivers/net/ieee802154/Kconfig > +++ b/drivers/net/ieee802154/Kconfig > @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS > exposes a debugfs node for each CA8210 instance which allows > direct use of the Cascoda API, exposing the 802.15.4 MAC > management entities. > + > +config IEEE802154_MCR20A > + tristate "MCR20A transceiver driver" > + depends on IEEE802154_DRIVERS && MAC802154 > + depends on SPI > + ---help--- > + Say Y here to enable the MCR20A SPI 802.15.4 wireless > + controller. > + > + This driver can also be built as a module. To do so, say M here. > + the module will be called 'mcr20a'. > diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile > index bea1de5..104744d 100644 > --- a/drivers/net/ieee802154/Makefile > +++ b/drivers/net/ieee802154/Makefile > @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o > obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o > obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o > obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o > +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o > diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c > new file mode 100644 > index 0000000..90712e9 > --- /dev/null > +++ b/drivers/net/ieee802154/mcr20a.c > @@ -0,0 +1,1460 @@ > +/* > + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller > + * > + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 > + * as published by the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + */ > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/gpio.h> > +#include <linux/spi/spi.h> > +#include <linux/workqueue.h> > +#include <linux/interrupt.h> > +#include <linux/skbuff.h> > +#include <linux/of_gpio.h> > +#include <linux/regmap.h> > +#include <linux/ieee802154.h> > +#include <linux/debugfs.h> > + > +#include <net/mac802154.h> > +#include <net/cfg802154.h> > + > +#include <linux/device.h> > + > +#include "mcr20a.h" > + > +#define SPI_COMMAND_BUFFER 3 > + > +#define REGISTER_READ BIT(7) > +#define REGISTER_WRITE (0 << 7) > +#define REGISTER_ACCESS (0 << 6) > +#define PACKET_BUFF_BURST_ACCESS BIT(6) > +#define PACKET_BUFF_BYTE_ACCESS BIT(5) > + > +#define MCR20A_WRITE_REG(x) (x) > +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) > +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) > +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) > + > +#define MCR20A_CMD_REG 0x80 > +#define MCR20A_CMD_REG_MASK 0x3f > +#define MCR20A_CMD_WRITE 0x40 > +#define MCR20A_CMD_FB 0x20 Some of these indents look wrong in my mailer. Did you run this patch through the checkpatch script? > +/* Number of Interrupt Request Status Register */ > +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ > + > +/* MCR20A CCA Type */ > +enum { > + MCR20A_CCA_ED, // energy detect - CCA bit not active, > + // not to be used for T and CCCA sequences > + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE > + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE > + MCR20A_CCA_MODE3 > +}; > + > +enum { > + MCR20A_XCVSEQ_IDLE = 0x00, > + MCR20A_XCVSEQ_RX = 0x01, > + MCR20A_XCVSEQ_TX = 0x02, > + MCR20A_XCVSEQ_CCA = 0x03, > + MCR20A_XCVSEQ_TR = 0x04, > + MCR20A_XCVSEQ_CCCA = 0x05, > +}; > + > +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ > +#define MCR20A_MIN_CHANNEL (11) > +#define MCR20A_MAX_CHANNEL (26) > +#define MCR20A_CHANNEL_SPACING (5) > + > +/* MCR20A CCA Threshold constans */ > +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) > +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) > + > +/* version 0C */ > +#define MCR20A_OVERWRITE_VERSION (0x0C) > + > +/* MCR20A PLL configurations */ > +static const u8 PLL_INT[16] = { > + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, > + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, > + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, > + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, > + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, > + /* 2480 */ 0x0D > +}; > + > +static const u8 PLL_FRAC[16] = { > + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, > + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, > + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, > + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, > + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, > + /* 2480 */ 0x80 > +}; > + > +static const struct reg_sequence mar20a_iar_overwrites[] = { > + { IAR_MISC_PAD_CTRL, 0x02 }, > + { IAR_VCO_CTRL1, 0xB3 }, > + { IAR_VCO_CTRL2, 0x07 }, > + { IAR_PA_TUNING, 0x71 }, > + { IAR_CHF_IBUF, 0x2F }, > + { IAR_CHF_QBUF, 0x2F }, > + { IAR_CHF_IRIN, 0x24 }, > + { IAR_CHF_QRIN, 0x24 }, > + { IAR_CHF_IL, 0x24 }, > + { IAR_CHF_QL, 0x24 }, > + { IAR_CHF_CC1, 0x32 }, > + { IAR_CHF_CCL, 0x1D }, > + { IAR_CHF_CC2, 0x2D }, > + { IAR_CHF_IROUT, 0x24 }, > + { IAR_CHF_QROUT, 0x24 }, > + { IAR_PA_CAL, 0x28 }, > + { IAR_AGC_THR1, 0x55 }, > + { IAR_AGC_THR2, 0x2D }, > + { IAR_ATT_RSSI1, 0x5F }, > + { IAR_ATT_RSSI2, 0x8F }, > + { IAR_RSSI_OFFSET, 0x61 }, > + { IAR_CHF_PMA_GAIN, 0x03 }, > + { IAR_CCA1_THRESH, 0x50 }, > + { IAR_CORR_NVAL, 0x13 }, > + { IAR_ACKDELAY, 0x3D }, > +}; > + > +#define MCR20A_VALID_CHANNELS (0x07FFF800) > + > +struct mcr20a_platform_data { > + int rst_gpio; > +}; > + > +#define MCR20A_MAX_BUF (127) > + > +#define printdev(X) (&X->spi->dev) > + > +/* regmap information for Direct Access Register (DAR) access */ > +#define MCR20A_DAR_WRITE 0x01 > +#define MCR20A_DAR_READ 0x00 > +#define MCR20A_DAR_NUMREGS 0x3F > + > +/* regmap information for Indirect Access Register (IAR) access */ > +#define MCR20A_IAR_ACCESS 0x80 > +#define MCR20A_IAR_NUMREGS 0xBEFF > + > +/* Read/Write SPI Commands for DAR and IAR registers. */ > +#define MCR20A_READSHORT(reg) ((reg) << 1) > +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) > +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) > +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) > + > +/* Type definitions for link configuration of instantiable layers */ > +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) > + > +static bool > +mcr20a_dar_writeable(struct device *dev, unsigned int reg) > +{ > + switch (reg) { > + case DAR_IRQ_STS1: > + case DAR_IRQ_STS2: > + case DAR_IRQ_STS3: > + case DAR_PHY_CTRL1: > + case DAR_PHY_CTRL2: > + case DAR_PHY_CTRL3: > + case DAR_PHY_CTRL4: > + case DAR_SRC_CTRL: > + case DAR_SRC_ADDRS_SUM_LSB: > + case DAR_SRC_ADDRS_SUM_MSB: > + case DAR_T3CMP_LSB: > + case DAR_T3CMP_MSB: > + case DAR_T3CMP_USB: > + case DAR_T2PRIMECMP_LSB: > + case DAR_T2PRIMECMP_MSB: > + case DAR_T1CMP_LSB: > + case DAR_T1CMP_MSB: > + case DAR_T1CMP_USB: > + case DAR_T2CMP_LSB: > + case DAR_T2CMP_MSB: > + case DAR_T2CMP_USB: > + case DAR_T4CMP_LSB: > + case DAR_T4CMP_MSB: > + case DAR_T4CMP_USB: > + case DAR_PLL_INT0: > + case DAR_PLL_FRAC0_LSB: > + case DAR_PLL_FRAC0_MSB: > + case DAR_PA_PWR: > + /* no DAR_ACM */ > + case DAR_OVERWRITE_VER: > + case DAR_CLK_OUT_CTRL: > + case DAR_PWR_MODES: > + return true; > + default: > + return false; > + } > +} > + > +static bool > +mcr20a_dar_readable(struct device *dev, unsigned int reg) > +{ > + bool rc; > + > + /* all writeable are also readable */ > + rc = mcr20a_dar_writeable(dev, reg); > + if (rc) > + return rc; > + > + /* readonly regs */ > + switch (reg) { > + case DAR_RX_FRM_LEN: > + case DAR_CCA1_ED_FNL: > + case DAR_EVENT_TMR_LSB: > + case DAR_EVENT_TMR_MSB: > + case DAR_EVENT_TMR_USB: > + case DAR_TIMESTAMP_LSB: > + case DAR_TIMESTAMP_MSB: > + case DAR_TIMESTAMP_USB: > + case DAR_SEQ_STATE: > + case DAR_LQI_VALUE: > + case DAR_RSSI_CCA_CONT: > + return true; > + default: > + return false; > + } > +} > + > +static bool > +mcr20a_dar_volatile(struct device *dev, unsigned int reg) > +{ > + /* can be changed during runtime */ > + switch (reg) { > + case DAR_IRQ_STS1: > + case DAR_IRQ_STS2: > + case DAR_IRQ_STS3: > + /* use them in spi_async and regmap so it's volatile */ > + return true; > + default: > + return false; > + } > +} > + > +static bool > +mcr20a_dar_precious(struct device *dev, unsigned int reg) > +{ > + /* don't clear irq line on read */ > + switch (reg) { > + case DAR_IRQ_STS1: > + case DAR_IRQ_STS2: > + case DAR_IRQ_STS3: > + return true; > + default: > + return false; > + } > +} > + > +static const struct regmap_config mcr20a_dar_regmap = { > + .name = "mcr20a_dar", > + .reg_bits = 8, > + .val_bits = 8, > + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, > + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, > + .cache_type = REGCACHE_RBTREE, > + .writeable_reg = mcr20a_dar_writeable, > + .readable_reg = mcr20a_dar_readable, > + .volatile_reg = mcr20a_dar_volatile, > + .precious_reg = mcr20a_dar_precious, > + .fast_io = true, > + .can_multi_write = true, > +}; > + > +static bool > +mcr20a_iar_writeable(struct device *dev, unsigned int reg) > +{ > + switch (reg) { > + case IAR_XTAL_TRIM: > + case IAR_PMC_LP_TRIM: > + case IAR_MACPANID0_LSB: > + case IAR_MACPANID0_MSB: > + case IAR_MACSHORTADDRS0_LSB: > + case IAR_MACSHORTADDRS0_MSB: > + case IAR_MACLONGADDRS0_0: > + case IAR_MACLONGADDRS0_8: > + case IAR_MACLONGADDRS0_16: > + case IAR_MACLONGADDRS0_24: > + case IAR_MACLONGADDRS0_32: > + case IAR_MACLONGADDRS0_40: > + case IAR_MACLONGADDRS0_48: > + case IAR_MACLONGADDRS0_56: > + case IAR_RX_FRAME_FILTER: > + case IAR_PLL_INT1: > + case IAR_PLL_FRAC1_LSB: > + case IAR_PLL_FRAC1_MSB: > + case IAR_MACPANID1_LSB: > + case IAR_MACPANID1_MSB: > + case IAR_MACSHORTADDRS1_LSB: > + case IAR_MACSHORTADDRS1_MSB: > + case IAR_MACLONGADDRS1_0: > + case IAR_MACLONGADDRS1_8: > + case IAR_MACLONGADDRS1_16: > + case IAR_MACLONGADDRS1_24: > + case IAR_MACLONGADDRS1_32: > + case IAR_MACLONGADDRS1_40: > + case IAR_MACLONGADDRS1_48: > + case IAR_MACLONGADDRS1_56: > + case IAR_DUAL_PAN_CTRL: > + case IAR_DUAL_PAN_DWELL: > + case IAR_CCA1_THRESH: > + case IAR_CCA1_ED_OFFSET_COMP: > + case IAR_LQI_OFFSET_COMP: > + case IAR_CCA_CTRL: > + case IAR_CCA2_CORR_PEAKS: > + case IAR_CCA2_CORR_THRESH: > + case IAR_TMR_PRESCALE: > + case IAR_ANT_PAD_CTRL: > + case IAR_MISC_PAD_CTRL: > + case IAR_BSM_CTRL: > + case IAR_RNG: > + case IAR_RX_WTR_MARK: > + case IAR_SOFT_RESET: > + case IAR_TXDELAY: > + case IAR_ACKDELAY: > + case IAR_CORR_NVAL: > + case IAR_ANT_AGC_CTRL: > + case IAR_AGC_THR1: > + case IAR_AGC_THR2: > + case IAR_PA_CAL: > + case IAR_ATT_RSSI1: > + case IAR_ATT_RSSI2: > + case IAR_RSSI_OFFSET: > + case IAR_XTAL_CTRL: > + case IAR_CHF_PMA_GAIN: > + case IAR_CHF_IBUF: > + case IAR_CHF_QBUF: > + case IAR_CHF_IRIN: > + case IAR_CHF_QRIN: > + case IAR_CHF_IL: > + case IAR_CHF_QL: > + case IAR_CHF_CC1: > + case IAR_CHF_CCL: > + case IAR_CHF_CC2: > + case IAR_CHF_IROUT: > + case IAR_CHF_QROUT: > + case IAR_PA_TUNING: > + case IAR_VCO_CTRL1: > + case IAR_VCO_CTRL2: > + return true; > + default: > + return false; > + } > +} > + > +static bool > +mcr20a_iar_readable(struct device *dev, unsigned int reg) > +{ > + bool rc; > + > + /* all writeable are also readable */ > + rc = mcr20a_iar_writeable(dev, reg); > + if (rc) > + return rc; > + > + /* readonly regs */ > + switch (reg) { > + case IAR_PART_ID: > + case IAR_DUAL_PAN_STS: > + case IAR_RX_BYTE_COUNT: > + case IAR_FILTERFAIL_CODE1: > + case IAR_FILTERFAIL_CODE2: > + case IAR_RSSI: > + return true; > + default: > + return false; > + } > +} > + > +static bool > +mcr20a_iar_volatile(struct device *dev, unsigned int reg) > +{ > +/* can be changed during runtime */ > + switch (reg) { > + case IAR_DUAL_PAN_STS: > + case IAR_RX_BYTE_COUNT: > + case IAR_FILTERFAIL_CODE1: > + case IAR_FILTERFAIL_CODE2: > + case IAR_RSSI: > + return true; > + default: > + return false; > + } > +} > + > +static const struct regmap_config mcr20a_iar_regmap = { > + .name = "mcr20a_iar", > + .reg_bits = 16, > + .val_bits = 8, > + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, > + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, > + .cache_type = REGCACHE_RBTREE, > + .writeable_reg = mcr20a_iar_writeable, > + .readable_reg = mcr20a_iar_readable, > + .volatile_reg = mcr20a_iar_volatile, > + .fast_io = true, > +}; > + > +struct mcr20a_local { > + struct spi_device *spi; > + > + struct ieee802154_hw *hw; > + struct mcr20a_platform_data *pdata; > + struct regmap *regmap_dar; > + struct regmap *regmap_iar; > + > + u8 *buf; > + > + bool is_tx; > + > + /* for writing tx buffer */ > + struct spi_message tx_buf_msg; > + u8 tx_header[1]; > + /* burst buffer write command */ > + struct spi_transfer tx_xfer_header; > + u8 tx_len[1]; > + /* len of tx packet */ > + struct spi_transfer tx_xfer_len; > + /* data of tx packet */ > + struct spi_transfer tx_xfer_buf; > + struct sk_buff *tx_skb; > + > + /* for read length rxfifo */ > + struct spi_message reg_msg; > + u8 reg_cmd[1]; > + u8 reg_data[MCR20A_IRQSTS_NUM]; > + struct spi_transfer reg_xfer_cmd; > + struct spi_transfer reg_xfer_data; > + > + /* receive handling */ > + struct spi_message rx_buf_msg; > + u8 rx_header[1]; > + struct spi_transfer rx_xfer_header; > + u8 rx_lqi[1]; > + struct spi_transfer rx_xfer_lqi; > + u8 rx_buf[MCR20A_MAX_BUF]; > + struct spi_transfer rx_xfer_buf; > + > + /* isr handling for reading intstat */ > + struct spi_message irq_msg; > + u8 irq_header[1]; > + u8 irq_data[MCR20A_IRQSTS_NUM]; > + struct spi_transfer irq_xfer_data; > + struct spi_transfer irq_xfer_header; > +}; > + > +static void > +mcr20a_write_tx_buf_complete(void *context) > +{ > + struct mcr20a_local *lp = context; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + lp->reg_msg.complete = NULL; > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); > + lp->reg_data[0] = MCR20A_XCVSEQ_TX; > + lp->reg_xfer_data.len = 1; > + > + ret = spi_async(lp->spi, &lp->reg_msg); > + if (ret) > + dev_err(printdev(lp), "failed to set SEQ TX\n"); > +} > + > +static int > +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) > +{ > + struct mcr20a_local *lp = hw->priv; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + lp->tx_skb = skb; > + > +#ifdef DEBUG > + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, > + skb->data, skb->len, 0); > +#endif > + > + lp->is_tx = 1; > + > + lp->reg_msg.complete = NULL; > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); > + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; > + lp->reg_xfer_data.len = 1; > + > + return spi_async(lp->spi, &lp->reg_msg); > +} > + > +static int > +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) > +{ > + struct mcr20a_local *lp = hw->priv; > + unsigned int val = 0; > + u8 energy_level; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); > + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { > + /* Change CCA Type to 00 - Energy Detect */ > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); > + /* Perform ED */ > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, > + MCR20A_XCVSEQ_CCA); > + val = 0; > + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) > + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); > + /* the energy level scaled in 0x00 - 0xFF */ > + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); > + energy_level = (u8)val; > + > + if (energy_level >= 90) { > + /* ED value is below minimum. Return 0x00. */ > + energy_level = 0x00; > + } else if (energy_level <= 26) { > + /* ED value is above maximum. Return 0xFF. */ > + energy_level = 0xFF; > + } else { > + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ > + energy_level = (90 - energy_level); > + energy_level <<= 2; > + } > + > + *level = energy_level; > + } else { > + /* switch to IDLE at first */ > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, > + MCR20A_XCVSEQ_IDLE); > + } > + > + return 0; > +} > + > +static int > +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) > +{ > + struct mcr20a_local *lp = hw->priv; > + int ret; > + > + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); Nitpick. Typo in channel here. Might as well use __func__ :) > + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ > + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); > + if (ret) > + return ret; > + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); > + if (ret) > + return ret; > + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, > + PLL_FRAC[channel - 11]); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int > +mcr20a_start(struct ieee802154_hw *hw) > +{ > + struct mcr20a_local *lp = hw->priv; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* No slotted operation */ > + dev_dbg(printdev(lp), "no slotted operation\n"); > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_SLOTTED, 0x0); > + > + /* enable irq */ > + enable_irq(lp->spi->irq); > + > + /* Unmask SEQ interrupt */ > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, > + DAR_PHY_CTRL2_SEQMSK, 0x0); > + > + /* Start the RX sequence */ > + dev_dbg(printdev(lp), "start the RX sequence\n"); > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); > + > + return 0; > +} > + > +static void > +mcr20a_stop(struct ieee802154_hw *hw) > +{ > + struct mcr20a_local *lp = hw->priv; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* stop all running sequence */ > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); > + > + /* disable irq */ > + disable_irq(lp->spi->irq); > +} > + > +static int > +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, > + struct ieee802154_hw_addr_filt *filt, > + unsigned long changed) > +{ > + struct mcr20a_local *lp = hw->priv; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { > + u16 addr = le16_to_cpu(filt->short_addr); > + > + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); > + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); > + } > + > + if (changed & IEEE802154_AFILT_PANID_CHANGED) { > + u16 pan = le16_to_cpu(filt->pan_id); > + > + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); > + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); > + } > + > + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { > + u8 addr[8], i; > + > + memcpy(addr, &filt->ieee_addr, 8); > + for (i = 0; i < 8; i++) > + regmap_write(lp->regmap_iar, > + IAR_MACLONGADDRS0_0 + i, addr[i]); > + } > + > + if (changed & IEEE802154_AFILT_PANC_CHANGED) { > + if (filt->pan_coord) { > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); > + } else { > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); > + } > + } > + > + return 0; > +} > + > +/* -30 dBm to 10 dBm */ > +#define MCR20A_MAX_TX_POWERS 0x14 > +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { > + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, > + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 > +}; > + > +static int > +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) > +{ > + struct mcr20a_local *lp = hw->priv; > + u32 i; > + > + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); > + > + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { > + if (lp->hw->phy->supported.tx_powers[i] == mbm) > + return regmap_write(lp->regmap_dar, DAR_PA_PWR, > + ((i + 8) & 0x1F)); > + } > + > + return -EINVAL; > +} > + > +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD > +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; > + > +static int > +mcr20a_set_cca_mode(struct ieee802154_hw *hw, > + const struct wpan_phy_cca *cca) > +{ > + struct mcr20a_local *lp = hw->priv; > + unsigned int cca_mode = 0xff; > + bool cca_mode_and = false; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* mapping 802.15.4 to driver spec */ > + switch (cca->mode) { > + case NL802154_CCA_ENERGY: > + cca_mode = MCR20A_CCA_MODE1; > + break; > + case NL802154_CCA_CARRIER: > + cca_mode = MCR20A_CCA_MODE2; > + break; > + case NL802154_CCA_ENERGY_CARRIER: > + switch (cca->opt) { > + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: > + cca_mode = MCR20A_CCA_MODE3; > + cca_mode_and = true; > + break; > + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: > + cca_mode = MCR20A_CCA_MODE3; > + cca_mode_and = false; > + break; > + default: > + return -EINVAL; > + } > + break; > + default: > + return -EINVAL; > + } > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > + DAR_PHY_CTRL4_CCATYPE_MASK, > + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); > + if (ret < 0) > + return ret; > + > + if (cca_mode == MCR20A_CCA_MODE3) { > + if (cca_mode_and) { > + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, > + IAR_CCA_CTRL_CCA3_AND_NOT_OR, > + 0x08); > + } else { > + ret = regmap_update_bits(lp->regmap_iar, > + IAR_CCA_CTRL, > + IAR_CCA_CTRL_CCA3_AND_NOT_OR, > + 0x00); > + } > + if (ret < 0) > + return ret; > + } > + > + return ret; > +} > + > +static int > +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) > +{ > + struct mcr20a_local *lp = hw->priv; > + u32 i; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { > + if (hw->phy->supported.cca_ed_levels[i] == mbm) > + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); > + } > + > + return 0; > +} > + > +static int > +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) > +{ > + struct mcr20a_local *lp = hw->priv; > + int ret; > + u8 rx_frame_filter_reg = 0x0; > + u8 val; > + > + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); > + > + if (on) { > + /* All frame types accepted*/ > + val |= DAR_PHY_CTRL4_PROMISCUOUS; > + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); > + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | > + IAR_RX_FRAME_FLT_NS_FT); > + > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > + DAR_PHY_CTRL4_PROMISCUOUS, > + DAR_PHY_CTRL4_PROMISCUOUS); > + if (ret < 0) > + return ret; > + > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > + rx_frame_filter_reg); > + if (ret < 0) > + return ret; > + } else { > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); > + if (ret < 0) > + return ret; > + > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > + IAR_RX_FRAME_FLT_FRM_VER | > + IAR_RX_FRAME_FLT_BEACON_FT | > + IAR_RX_FRAME_FLT_DATA_FT | > + IAR_RX_FRAME_FLT_CMD_FT); > + if (ret < 0) > + return ret; > + } > + > + return 0; > +} > + > +static const struct ieee802154_ops mcr20a_hw_ops = { > + .owner = THIS_MODULE, > + .xmit_async = mcr20a_xmit, > + .ed = mcr20a_ed, > + .set_channel = mcr20a_set_channel, > + .start = mcr20a_start, > + .stop = mcr20a_stop, > + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, > + .set_txpower = mcr20a_set_txpower, > + .set_cca_mode = mcr20a_set_cca_mode, > + .set_cca_ed_level = mcr20a_set_cca_ed_level, > + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, > +}; > + > +static int > +mcr20a_request_rx(struct mcr20a_local *lp) > +{ > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* Start the RX sequence */ > + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); > + > + return 0; > +} > + > +static void > +mcr20a_handle_rx_read_buf_complete(void *context) > +{ > + struct mcr20a_local *lp = context; > + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; > + struct sk_buff *skb; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + dev_dbg(printdev(lp), "RX is done\n"); > + > + if (!ieee802154_is_valid_psdu_len(len)) { > + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); > + len = IEEE802154_MTU; > + } > + > + len = len - 2; /* get rid of frame check field */ > + > + skb = dev_alloc_skb(len); > + if (!skb) > + return; > + > + memcpy(skb_put(skb, len), lp->rx_buf, len); > + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); > + > +#ifdef DEBUG > + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, > + lp->rx_buf, len, 0); > + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); > +#endif Here, as well as in the corresponding TX hex_dump call I wonder how to better make use of it. Recompiling the driver to get the dump is not really nice. Having a way to have this enabled during runtime might be better. And across all drivers. Just thinking out loud here. Not saying you need to be he one implementing it. What do you think? > + /* start RX sequence */ > + mcr20a_request_rx(lp); > +} > + > +static void > +mcr20a_handle_rx_read_len_complete(void *context) > +{ > + struct mcr20a_local *lp = context; > + u8 len; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* get the length of received frame */ > + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; > + dev_dbg(printdev(lp), "frame len : %d\n", len); > + > + /* prepare to read the rx buf */ > + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; > + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; > + lp->rx_xfer_buf.len = len; > + > + ret = spi_async(lp->spi, &lp->rx_buf_msg); > + if (ret) > + dev_err(printdev(lp), "failed to read rx buffer length\n"); > +} > + > +static int > +mcr20a_handle_rx(struct mcr20a_local *lp) > +{ > + dev_dbg(printdev(lp), "%s\n", __func__); > + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; > + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); > + lp->reg_xfer_data.len = 1; > + > + return spi_async(lp->spi, &lp->reg_msg); > +} > + > +static int > +mcr20a_handle_tx_complete(struct mcr20a_local *lp) > +{ > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); > + > + return mcr20a_request_rx(lp); > +} > + > +static int > +mcr20a_handle_tx(struct mcr20a_local *lp) > +{ > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* write tx buffer */ > + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; > + /* add 2 bytes of FCS */ > + lp->tx_len[0] = lp->tx_skb->len + 2; > + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; > + /* add 1 byte psduLength */ > + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; > + > + ret = spi_async(lp->spi, &lp->tx_buf_msg); > + if (ret) { > + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); > + return ret; > + } > + > + return 0; > +} > + > +static void > +mcr20a_irq_clean_complete(void *context) > +{ > + struct mcr20a_local *lp = context; > + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + enable_irq(lp->spi->irq); > + > + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", > + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); > + > + switch (seq_state) { > + /* TX IRQ, RX IRQ and SEQ IRQ */ > + case (0x03): > + if (lp->is_tx) { > + lp->is_tx = 0; > + dev_dbg(printdev(lp), "TX is done. No ACK\n"); > + mcr20a_handle_tx_complete(lp); > + } > + break; > + case (0x05): > + /* rx is starting */ > + dev_dbg(printdev(lp), "RX is starting\n"); > + mcr20a_handle_rx(lp); > + break; > + case (0x07): > + if (lp->is_tx) { > + /* tx is done */ > + lp->is_tx = 0; > + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); > + mcr20a_handle_tx_complete(lp); > + } else { > + /* rx is starting */ > + dev_dbg(printdev(lp), "RX is starting\n"); > + mcr20a_handle_rx(lp); > + } > + break; > + case (0x01): > + if (lp->is_tx) { > + dev_dbg(printdev(lp), "TX is starting\n"); > + mcr20a_handle_tx(lp); > + } else { > + dev_dbg(printdev(lp), "MCR20A is stop\n"); > + } > + break; > + } > +} > + > +static void mcr20a_irq_status_complete(void *context) > +{ > + int ret; > + struct mcr20a_local *lp = context; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); > + > + lp->reg_msg.complete = mcr20a_irq_clean_complete; > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); > + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); > + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; > + > + ret = spi_async(lp->spi, &lp->reg_msg); > + > + if (ret) > + dev_err(printdev(lp), "failed to clean irq status\n"); > +} > + > +static irqreturn_t mcr20a_irq_isr(int irq, void *data) > +{ > + struct mcr20a_local *lp = data; > + int ret; > + > + disable_irq_nosync(irq); > + > + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); > + /* read IRQSTSx */ > + ret = spi_async(lp->spi, &lp->irq_msg); > + if (ret) { > + enable_irq(irq); > + return IRQ_NONE; > + } > + > + return IRQ_HANDLED; > +} > + > +static int mcr20a_get_platform_data(struct spi_device *spi, > + struct mcr20a_platform_data *pdata) > +{ > + int ret = 0; > + > + if (!spi->dev.of_node) > + return -EINVAL; > + > + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); > + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); > + > + return ret; > +} > + > +static void mcr20a_hw_setup(struct mcr20a_local *lp) > +{ > + u8 i; > + struct ieee802154_hw *hw = lp->hw; > + struct wpan_phy *phy = lp->hw->phy; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + phy->symbol_duration = 16; > + phy->lifs_period = 40; > + phy->sifs_period = 12; > + > + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | > + IEEE802154_HW_AFILT | > + IEEE802154_HW_PROMISCUOUS; > + > + phy->flags = WPAN_PHY_FLAG_TXPOWER | > + WPAN_PHY_FLAG_CCA_ED_LEVEL | > + WPAN_PHY_FLAG_CCA_MODE; > + > + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | > + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); > + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | > + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); > + > + /* initiating cca_ed_levels */ > + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; > + ++i) { > + mcr20a_ed_levels[i] = -i * 100; > + } > + > + phy->supported.cca_ed_levels = mcr20a_ed_levels; > + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); > + > + phy->cca.mode = NL802154_CCA_ENERGY; > + > + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; > + phy->current_page = 0; > + /* MCR20A default reset value */ > + phy->current_channel = 20; > + phy->symbol_duration = 16; > + phy->supported.tx_powers = mcr20a_powers; > + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); > + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; > + phy->transmit_power = phy->supported.tx_powers[0x0F]; > +} > + > +static void > +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) > +{ > + spi_message_init(&lp->tx_buf_msg); > + lp->tx_buf_msg.context = lp; > + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; > + > + lp->tx_xfer_header.len = 1; > + lp->tx_xfer_header.tx_buf = lp->tx_header; > + > + lp->tx_xfer_len.len = 1; > + lp->tx_xfer_len.tx_buf = lp->tx_len; > + > + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); > + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); > + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); > +} > + > +static void > +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) > +{ > + spi_message_init(&lp->reg_msg); > + lp->reg_msg.context = lp; > + > + lp->reg_xfer_cmd.len = 1; > + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; > + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; > + > + lp->reg_xfer_data.rx_buf = lp->reg_data; > + lp->reg_xfer_data.tx_buf = lp->reg_data; > + > + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); > + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); > + > + spi_message_init(&lp->rx_buf_msg); > + lp->rx_buf_msg.context = lp; > + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; > + lp->rx_xfer_header.len = 1; > + lp->rx_xfer_header.tx_buf = lp->rx_header; > + lp->rx_xfer_header.rx_buf = lp->rx_header; > + > + lp->rx_xfer_buf.rx_buf = lp->rx_buf; > + > + lp->rx_xfer_lqi.len = 1; > + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; > + > + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); > + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); > + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); > +} > + > +static void > +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) > +{ > + spi_message_init(&lp->irq_msg); > + lp->irq_msg.context = lp; > + lp->irq_msg.complete = mcr20a_irq_status_complete; > + lp->irq_xfer_header.len = 1; > + lp->irq_xfer_header.tx_buf = lp->irq_header; > + lp->irq_xfer_header.rx_buf = lp->irq_header; > + > + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; > + lp->irq_xfer_data.rx_buf = lp->irq_data; > + > + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); > + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); > +} > + > +static int > +mcr20a_phy_init(struct mcr20a_local *lp) > +{ > + u8 index; > + unsigned int phy_reg = 0; > + int ret; > + > + dev_dbg(printdev(lp), "%s\n", __func__); > + > + /* Disable Tristate on COCO MISO for SPI reads */ > + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); > + if (ret) > + goto err_ret; > + > + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts > + * immediately after init > + */ > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); > + if (ret) > + goto err_ret; > + > + /* Clear all PP IRQ bits in IRQSTS2 */ > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, > + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | > + DAR_IRQSTS2_WAKE_IRQ); > + if (ret) > + goto err_ret; > + > + /* Disable all timer interrupts */ > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); > + if (ret) > + goto err_ret; > + > + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); > + > + /* PHY_CTRL2 : disable all interrupts */ > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); > + if (ret) > + goto err_ret; > + > + /* PHY_CTRL3 : disable all timers and remaining interrupts */ > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, > + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | > + DAR_PHY_CTRL3_WAKE_MSK); > + if (ret) > + goto err_ret; > + > + /* SRC_CTRL : enable Acknowledge Frame Pending and > + * Source Address Matching Enable > + */ > + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, > + DAR_SRC_CTRL_ACK_FRM_PND | > + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); > + if (ret) > + goto err_ret; > + > + /* RX_FRAME_FILTER */ > + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > + IAR_RX_FRAME_FLT_FRM_VER | > + IAR_RX_FRAME_FLT_BEACON_FT | > + IAR_RX_FRAME_FLT_DATA_FT | > + IAR_RX_FRAME_FLT_CMD_FT); > + if (ret) > + goto err_ret; > + > + dev_info(printdev(lp), "overwrites version: 0x%02x\n", > + MCR20A_OVERWRITE_VERSION); > + > + /* Overwrites direct registers */ > + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, > + MCR20A_OVERWRITE_VERSION); > + if (ret) > + goto err_ret; > + > + /* Overwrites indirect registers */ > + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, > + ARRAY_SIZE(mar20a_iar_overwrites)); > + if (ret) > + goto err_ret; > + > + /* Clear HW indirect queue */ > + dev_dbg(printdev(lp), "clear HW indirect queue\n"); > + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { > + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << > + DAR_SRC_CTRL_INDEX_SHIFT) > + | (DAR_SRC_CTRL_SRCADDR_EN) > + | (DAR_SRC_CTRL_INDEX_DISABLE)); > + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); > + if (ret) > + goto err_ret; > + phy_reg = 0; > + } > + > + /* Assign HW Indirect hash table to PAN0 */ > + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); > + if (ret) > + goto err_ret; > + > + /* Clear current lvl */ > + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; > + > + /* Set new lvl */ > + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << > + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; > + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); > + if (ret) > + goto err_ret; > + > + /* set CCA threshold to -75 dBm */ > + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); > + if (ret) > + goto err_ret; > + > + /* set prescaller to obtain 1 symbol (16us) timebase */ > + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); > + if (ret) > + goto err_ret; > + > + /* enable autodoze mode. */ > + dev_dbg(printdev(lp), "enable autodoze mode\n"); > + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, > + DAR_PWR_MODES_AUTODOZE, > + DAR_PWR_MODES_AUTODOZE); > + if (ret) > + goto err_ret; > + > + /* disable clk_out */ > + dev_dbg(printdev(lp), "disable clk_out\n"); > + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, > + DAR_CLK_OUT_CTRL_EN, 0x0); > + if (ret) > + goto err_ret; > + > + return 0; > + > +err_ret: > + return ret; > +} > + > +static int > +mcr20a_probe(struct spi_device *spi) > +{ > + struct ieee802154_hw *hw; > + struct mcr20a_local *lp; > + struct mcr20a_platform_data *pdata; > + int irq_type; > + int ret = -ENOMEM; > + > + dev_dbg(&spi->dev, "%s\n", __func__); > + > + if (!spi->irq) { > + dev_err(&spi->dev, "no IRQ specified\n"); > + return -EINVAL; > + } > + > + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); > + if (!pdata) > + return -ENOMEM; > + > + /* set mcr20a platform data */ > + ret = mcr20a_get_platform_data(spi, pdata); > + if (ret < 0) { > + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); > + return ret; > + } > + > + /* init reset gpio */ > + if (gpio_is_valid(pdata->rst_gpio)) { > + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, > + GPIOF_OUT_INIT_HIGH, "reset"); > + if (ret) > + return ret; > + } > + > + /* reset mcr20a */ > + if (gpio_is_valid(pdata->rst_gpio)) { > + usleep_range(10, 20); > + gpio_set_value_cansleep(pdata->rst_gpio, 0); > + usleep_range(10, 20); > + gpio_set_value_cansleep(pdata->rst_gpio, 1); > + usleep_range(120, 240); > + } > + > + /* allocate ieee802154_hw and private data */ > + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); > + if (!hw) { > + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); > + return -ENOMEM; > + } > + > + /* init mcr20a local data */ > + lp = hw->priv; > + lp->hw = hw; > + lp->spi = spi; > + lp->spi->dev.platform_data = pdata; > + lp->pdata = pdata; > + > + /* init ieee802154_hw */ > + hw->parent = &spi->dev; > + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); > + > + /* init buf */ > + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); > + > + if (!lp->buf) > + return -ENOMEM; > + > + mcr20a_setup_tx_spi_messages(lp); > + mcr20a_setup_rx_spi_messages(lp); > + mcr20a_setup_irq_spi_messages(lp); > + > + /* setup regmap */ > + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); > + if (IS_ERR(lp->regmap_dar)) { > + ret = PTR_ERR(lp->regmap_dar); > + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", > + ret); > + goto free_dev; > + } > + > + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); > + if (IS_ERR(lp->regmap_iar)) { > + ret = PTR_ERR(lp->regmap_iar); > + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); > + goto free_dev; > + } > + > + mcr20a_hw_setup(lp); > + > + spi_set_drvdata(spi, lp); > + > + ret = mcr20a_phy_init(lp); > + if (ret < 0) { > + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); > + goto free_dev; > + } > + > + irq_type = irq_get_trigger_type(spi->irq); > + if (!irq_type) > + irq_type = IRQF_TRIGGER_FALLING; > + > + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, > + irq_type, dev_name(&spi->dev), lp); > + if (ret) { > + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); > + ret = -ENODEV; > + goto free_dev; > + } > + > + /* disable_irq by default and wait for starting hardware */ > + disable_irq(spi->irq); > + > + ret = ieee802154_register_hw(hw); > + if (ret) { > + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); > + goto free_dev; > + } > + > + return ret; > + > +free_dev: > + ieee802154_free_hw(lp->hw); > + > + return ret; > +} > + > +static int mcr20a_remove(struct spi_device *spi) > +{ > + struct mcr20a_local *lp = spi_get_drvdata(spi); > + > + dev_dbg(&spi->dev, "%s\n", __func__); > + > + ieee802154_unregister_hw(lp->hw); > + ieee802154_free_hw(lp->hw); > + > + return 0; > +} > + > +static const struct of_device_id mcr20a_of_match[] = { > + { .compatible = "nxp,mcr20a", }, > + { }, > +}; > +MODULE_DEVICE_TABLE(of, mcr20a_of_match); > + > +static const struct spi_device_id mcr20a_device_id[] = { > + { .name = "mcr20a", }, > + { }, > +}; > +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); > + > +static struct spi_driver mcr20a_driver = { > + .id_table = mcr20a_device_id, > + .driver = { > + .of_match_table = of_match_ptr(mcr20a_of_match), > + .name = "mcr20a", > + }, > + .probe = mcr20a_probe, > + .remove = mcr20a_remove, > +}; > + > +module_spi_driver(mcr20a_driver); > + > +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); > +MODULE_LICENSE("GPL v2"); > +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); > diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h > new file mode 100644 > index 0000000..6da4fd0 > --- /dev/null > +++ b/drivers/net/ieee802154/mcr20a.h > @@ -0,0 +1,498 @@ > +/* > + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller > + * > + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 > + * as published by the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + */ > +#ifndef _MCR20A_H > +#define _MCR20A_H > + > +/* Direct Accress Register */ > +#define DAR_IRQ_STS1 0x00 > +#define DAR_IRQ_STS2 0x01 > +#define DAR_IRQ_STS3 0x02 > +#define DAR_PHY_CTRL1 0x03 > +#define DAR_PHY_CTRL2 0x04 > +#define DAR_PHY_CTRL3 0x05 > +#define DAR_RX_FRM_LEN 0x06 > +#define DAR_PHY_CTRL4 0x07 > +#define DAR_SRC_CTRL 0x08 > +#define DAR_SRC_ADDRS_SUM_LSB 0x09 > +#define DAR_SRC_ADDRS_SUM_MSB 0x0A > +#define DAR_CCA1_ED_FNL 0x0B > +#define DAR_EVENT_TMR_LSB 0x0C > +#define DAR_EVENT_TMR_MSB 0x0D > +#define DAR_EVENT_TMR_USB 0x0E > +#define DAR_TIMESTAMP_LSB 0x0F > +#define DAR_TIMESTAMP_MSB 0x10 > +#define DAR_TIMESTAMP_USB 0x11 > +#define DAR_T3CMP_LSB 0x12 > +#define DAR_T3CMP_MSB 0x13 > +#define DAR_T3CMP_USB 0x14 > +#define DAR_T2PRIMECMP_LSB 0x15 > +#define DAR_T2PRIMECMP_MSB 0x16 > +#define DAR_T1CMP_LSB 0x17 > +#define DAR_T1CMP_MSB 0x18 > +#define DAR_T1CMP_USB 0x19 > +#define DAR_T2CMP_LSB 0x1A > +#define DAR_T2CMP_MSB 0x1B > +#define DAR_T2CMP_USB 0x1C > +#define DAR_T4CMP_LSB 0x1D > +#define DAR_T4CMP_MSB 0x1E > +#define DAR_T4CMP_USB 0x1F > +#define DAR_PLL_INT0 0x20 > +#define DAR_PLL_FRAC0_LSB 0x21 > +#define DAR_PLL_FRAC0_MSB 0x22 > +#define DAR_PA_PWR 0x23 > +#define DAR_SEQ_STATE 0x24 > +#define DAR_LQI_VALUE 0x25 > +#define DAR_RSSI_CCA_CONT 0x26 > +/*------------------ 0x27 */ > +#define DAR_ASM_CTRL1 0x28 > +#define DAR_ASM_CTRL2 0x29 > +#define DAR_ASM_DATA_0 0x2A > +#define DAR_ASM_DATA_1 0x2B > +#define DAR_ASM_DATA_2 0x2C > +#define DAR_ASM_DATA_3 0x2D > +#define DAR_ASM_DATA_4 0x2E > +#define DAR_ASM_DATA_5 0x2F > +#define DAR_ASM_DATA_6 0x30 > +#define DAR_ASM_DATA_7 0x31 > +#define DAR_ASM_DATA_8 0x32 > +#define DAR_ASM_DATA_9 0x33 > +#define DAR_ASM_DATA_A 0x34 > +#define DAR_ASM_DATA_B 0x35 > +#define DAR_ASM_DATA_C 0x36 > +#define DAR_ASM_DATA_D 0x37 > +#define DAR_ASM_DATA_E 0x38 > +#define DAR_ASM_DATA_F 0x39 > +/*----------------------- 0x3A */ > +#define DAR_OVERWRITE_VER 0x3B > +#define DAR_CLK_OUT_CTRL 0x3C > +#define DAR_PWR_MODES 0x3D > +#define IAR_INDEX 0x3E > +#define IAR_DATA 0x3F > + > +/* Indirect Resgister Memory */ > +#define IAR_PART_ID 0x00 > +#define IAR_XTAL_TRIM 0x01 > +#define IAR_PMC_LP_TRIM 0x02 > +#define IAR_MACPANID0_LSB 0x03 > +#define IAR_MACPANID0_MSB 0x04 > +#define IAR_MACSHORTADDRS0_LSB 0x05 > +#define IAR_MACSHORTADDRS0_MSB 0x06 > +#define IAR_MACLONGADDRS0_0 0x07 > +#define IAR_MACLONGADDRS0_8 0x08 > +#define IAR_MACLONGADDRS0_16 0x09 > +#define IAR_MACLONGADDRS0_24 0x0A > +#define IAR_MACLONGADDRS0_32 0x0B > +#define IAR_MACLONGADDRS0_40 0x0C > +#define IAR_MACLONGADDRS0_48 0x0D > +#define IAR_MACLONGADDRS0_56 0x0E > +#define IAR_RX_FRAME_FILTER 0x0F > +#define IAR_PLL_INT1 0x10 > +#define IAR_PLL_FRAC1_LSB 0x11 > +#define IAR_PLL_FRAC1_MSB 0x12 > +#define IAR_MACPANID1_LSB 0x13 > +#define IAR_MACPANID1_MSB 0x14 > +#define IAR_MACSHORTADDRS1_LSB 0x15 > +#define IAR_MACSHORTADDRS1_MSB 0x16 > +#define IAR_MACLONGADDRS1_0 0x17 > +#define IAR_MACLONGADDRS1_8 0x18 > +#define IAR_MACLONGADDRS1_16 0x19 > +#define IAR_MACLONGADDRS1_24 0x1A > +#define IAR_MACLONGADDRS1_32 0x1B > +#define IAR_MACLONGADDRS1_40 0x1C > +#define IAR_MACLONGADDRS1_48 0x1D > +#define IAR_MACLONGADDRS1_56 0x1E > +#define IAR_DUAL_PAN_CTRL 0x1F > +#define IAR_DUAL_PAN_DWELL 0x20 > +#define IAR_DUAL_PAN_STS 0x21 > +#define IAR_CCA1_THRESH 0x22 > +#define IAR_CCA1_ED_OFFSET_COMP 0x23 > +#define IAR_LQI_OFFSET_COMP 0x24 > +#define IAR_CCA_CTRL 0x25 > +#define IAR_CCA2_CORR_PEAKS 0x26 > +#define IAR_CCA2_CORR_THRESH 0x27 > +#define IAR_TMR_PRESCALE 0x28 > +/*-------------------- 0x29 */ > +#define IAR_GPIO_DATA 0x2A > +#define IAR_GPIO_DIR 0x2B > +#define IAR_GPIO_PUL_EN 0x2C > +#define IAR_GPIO_PUL_SEL 0x2D > +#define IAR_GPIO_DS 0x2E > +/*------------------ 0x2F */ > +#define IAR_ANT_PAD_CTRL 0x30 > +#define IAR_MISC_PAD_CTRL 0x31 > +#define IAR_BSM_CTRL 0x32 > +/*------------------- 0x33 */ > +#define IAR_RNG 0x34 > +#define IAR_RX_BYTE_COUNT 0x35 > +#define IAR_RX_WTR_MARK 0x36 > +#define IAR_SOFT_RESET 0x37 > +#define IAR_TXDELAY 0x38 > +#define IAR_ACKDELAY 0x39 > +#define IAR_SEQ_MGR_CTRL 0x3A > +#define IAR_SEQ_MGR_STS 0x3B > +#define IAR_SEQ_T_STS 0x3C > +#define IAR_ABORT_STS 0x3D > +#define IAR_CCCA_BUSY_CNT 0x3E > +#define IAR_SRC_ADDR_CHECKSUM1 0x3F > +#define IAR_SRC_ADDR_CHECKSUM2 0x40 > +#define IAR_SRC_TBL_VALID1 0x41 > +#define IAR_SRC_TBL_VALID2 0x42 > +#define IAR_FILTERFAIL_CODE1 0x43 > +#define IAR_FILTERFAIL_CODE2 0x44 > +#define IAR_SLOT_PRELOAD 0x45 > +/*-------------------- 0x46 */ > +#define IAR_CORR_VT 0x47 > +#define IAR_SYNC_CTRL 0x48 > +#define IAR_PN_LSB_0 0x49 > +#define IAR_PN_LSB_1 0x4A > +#define IAR_PN_MSB_0 0x4B > +#define IAR_PN_MSB_1 0x4C > +#define IAR_CORR_NVAL 0x4D > +#define IAR_TX_MODE_CTRL 0x4E > +#define IAR_SNF_THR 0x4F > +#define IAR_FAD_THR 0x50 > +#define IAR_ANT_AGC_CTRL 0x51 > +#define IAR_AGC_THR1 0x52 > +#define IAR_AGC_THR2 0x53 > +#define IAR_AGC_HYS 0x54 > +#define IAR_AFC 0x55 > +/*------------------- 0x56 */ > +/*------------------- 0x57 */ > +#define IAR_PHY_STS 0x58 > +#define IAR_RX_MAX_CORR 0x59 > +#define IAR_RX_MAX_PREAMBLE 0x5A > +#define IAR_RSSI 0x5B > +/*------------------- 0x5C */ > +/*------------------- 0x5D */ > +#define IAR_PLL_DIG_CTRL 0x5E > +#define IAR_VCO_CAL 0x5F > +#define IAR_VCO_BEST_DIFF 0x60 > +#define IAR_VCO_BIAS 0x61 > +#define IAR_KMOD_CTRL 0x62 > +#define IAR_KMOD_CAL 0x63 > +#define IAR_PA_CAL 0x64 > +#define IAR_PA_PWRCAL 0x65 > +#define IAR_ATT_RSSI1 0x66 > +#define IAR_ATT_RSSI2 0x67 > +#define IAR_RSSI_OFFSET 0x68 > +#define IAR_RSSI_SLOPE 0x69 > +#define IAR_RSSI_CAL1 0x6A > +#define IAR_RSSI_CAL2 0x6B > +/*------------------- 0x6C */ > +/*------------------- 0x6D */ > +#define IAR_XTAL_CTRL 0x6E > +#define IAR_XTAL_COMP_MIN 0x6F > +#define IAR_XTAL_COMP_MAX 0x70 > +#define IAR_XTAL_GM 0x71 > +/*------------------- 0x72 */ > +/*------------------- 0x73 */ > +#define IAR_LNA_TUNE 0x74 > +#define IAR_LNA_AGCGAIN 0x75 > +/*------------------- 0x76 */ > +/*------------------- 0x77 */ > +#define IAR_CHF_PMA_GAIN 0x78 > +#define IAR_CHF_IBUF 0x79 > +#define IAR_CHF_QBUF 0x7A > +#define IAR_CHF_IRIN 0x7B > +#define IAR_CHF_QRIN 0x7C > +#define IAR_CHF_IL 0x7D > +#define IAR_CHF_QL 0x7E > +#define IAR_CHF_CC1 0x7F > +#define IAR_CHF_CCL 0x80 > +#define IAR_CHF_CC2 0x81 > +#define IAR_CHF_IROUT 0x82 > +#define IAR_CHF_QROUT 0x83 > +/*------------------- 0x84 */ > +/*------------------- 0x85 */ > +#define IAR_RSSI_CTRL 0x86 > +/*------------------- 0x87 */ > +/*------------------- 0x88 */ > +#define IAR_PA_BIAS 0x89 > +#define IAR_PA_TUNING 0x8A > +/*------------------- 0x8B */ > +/*------------------- 0x8C */ > +#define IAR_PMC_HP_TRIM 0x8D > +#define IAR_VREGA_TRIM 0x8E > +/*------------------- 0x8F */ > +/*------------------- 0x90 */ > +#define IAR_VCO_CTRL1 0x91 > +#define IAR_VCO_CTRL2 0x92 > +/*------------------- 0x93 */ > +/*------------------- 0x94 */ > +#define IAR_ANA_SPARE_OUT1 0x95 > +#define IAR_ANA_SPARE_OUT2 0x96 > +#define IAR_ANA_SPARE_IN 0x97 > +#define IAR_MISCELLANEOUS 0x98 > +/*------------------- 0x99 */ > +#define IAR_SEQ_MGR_OVRD0 0x9A > +#define IAR_SEQ_MGR_OVRD1 0x9B > +#define IAR_SEQ_MGR_OVRD2 0x9C > +#define IAR_SEQ_MGR_OVRD3 0x9D > +#define IAR_SEQ_MGR_OVRD4 0x9E > +#define IAR_SEQ_MGR_OVRD5 0x9F > +#define IAR_SEQ_MGR_OVRD6 0xA0 > +#define IAR_SEQ_MGR_OVRD7 0xA1 > +/*------------------- 0xA2 */ > +#define IAR_TESTMODE_CTRL 0xA3 > +#define IAR_DTM_CTRL1 0xA4 > +#define IAR_DTM_CTRL2 0xA5 > +#define IAR_ATM_CTRL1 0xA6 > +#define IAR_ATM_CTRL2 0xA7 > +#define IAR_ATM_CTRL3 0xA8 > +/*------------------- 0xA9 */ > +#define IAR_LIM_FE_TEST_CTRL 0xAA > +#define IAR_CHF_TEST_CTRL 0xAB > +#define IAR_VCO_TEST_CTRL 0xAC > +#define IAR_PLL_TEST_CTRL 0xAD > +#define IAR_PA_TEST_CTRL 0xAE > +#define IAR_PMC_TEST_CTRL 0xAF > +#define IAR_SCAN_DTM_PROTECT_1 0xFE > +#define IAR_SCAN_DTM_PROTECT_0 0xFF > + > +/* IRQSTS1 bits */ > +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) > +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) > +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) > +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) > +#define DAR_IRQSTS1_CCAIRQ BIT(3) > +#define DAR_IRQSTS1_RXIRQ BIT(2) > +#define DAR_IRQSTS1_TXIRQ BIT(1) > +#define DAR_IRQSTS1_SEQIRQ BIT(0) > + > +/* IRQSTS2 bits */ > +#define DAR_IRQSTS2_CRCVALID BIT(7) > +#define DAR_IRQSTS2_CCA BIT(6) > +#define DAR_IRQSTS2_SRCADDR BIT(5) > +#define DAR_IRQSTS2_PI BIT(4) > +#define DAR_IRQSTS2_TMRSTATUS BIT(3) > +#define DAR_IRQSTS2_ASM_IRQ BIT(2) > +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) > +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) > + > +/* IRQSTS3 bits */ > +#define DAR_IRQSTS3_TMR4MSK BIT(7) > +#define DAR_IRQSTS3_TMR3MSK BIT(6) > +#define DAR_IRQSTS3_TMR2MSK BIT(5) > +#define DAR_IRQSTS3_TMR1MSK BIT(4) > +#define DAR_IRQSTS3_TMR4IRQ BIT(3) > +#define DAR_IRQSTS3_TMR3IRQ BIT(2) > +#define DAR_IRQSTS3_TMR2IRQ BIT(1) > +#define DAR_IRQSTS3_TMR1IRQ BIT(0) > + > +/* PHY_CTRL1 bits */ > +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) > +#define DAR_PHY_CTRL1_SLOTTED BIT(6) > +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) > +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 > +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) > +#define DAR_PHY_CTRL1_AUTOACK BIT(3) > +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 > + > +/* PHY_CTRL2 bits */ > +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) > +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) > +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) > +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) > +#define DAR_PHY_CTRL2_CCAMSK BIT(3) > +#define DAR_PHY_CTRL2_RXMSK BIT(2) > +#define DAR_PHY_CTRL2_TXMSK BIT(1) > +#define DAR_PHY_CTRL2_SEQMSK BIT(0) > + > +/* PHY_CTRL3 bits */ > +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) > +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) > +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) > +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) > +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) > +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) > +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) > + > +/* RX_FRM_LEN bits */ > +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) > + > +/* PHY_CTRL4 bits */ > +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) > +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) > +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) > +#define DAR_PHY_CTRL4_CCATYPE (3) > +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) > +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) > +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) > +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) > +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) > + > +/* SRC_CTRL bits */ > +#define DAR_SRC_CTRL_INDEX (0x0F) > +#define DAR_SRC_CTRL_INDEX_SHIFT (4) > +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) > +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) > +#define DAR_SRC_CTRL_INDEX_EN BIT(1) > +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) > + > +/* DAR_ASM_CTRL1 bits */ > +#define DAR_ASM_CTRL1_CLEAR BIT(7) > +#define DAR_ASM_CTRL1_START BIT(6) > +#define DAR_ASM_CTRL1_SELFTST BIT(5) > +#define DAR_ASM_CTRL1_CTR BIT(4) > +#define DAR_ASM_CTRL1_CBC BIT(3) > +#define DAR_ASM_CTRL1_AES BIT(2) > +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) > + > +/* DAR_ASM_CTRL2 bits */ > +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) > +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) > +#define DAR_ASM_CTRL2_TSTPAS BIT(1) > + > +/* DAR_CLK_OUT_CTRL bits */ > +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) > +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) > +#define DAR_CLK_OUT_CTRL_SR BIT(5) > +#define DAR_CLK_OUT_CTRL_DS BIT(4) > +#define DAR_CLK_OUT_CTRL_EN BIT(3) > +#define DAR_CLK_OUT_CTRL_DIV (7) > + > +/* DAR_PWR_MODES bits */ > +#define DAR_PWR_MODES_XTAL_READY BIT(5) > +#define DAR_PWR_MODES_XTALEN BIT(4) > +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) > +#define DAR_PWR_MODES_AUTODOZE BIT(1) > +#define DAR_PWR_MODES_PMC_MODE BIT(0) > + > +/* RX_FRAME_FILTER bits */ > +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) > +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) > +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) > +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) > +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) > +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) > +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) > +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) > + > +/* DUAL_PAN_CTRL bits */ > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) > +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) > +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) > +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) > + > +/* DUAL_PAN_STS bits */ > +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) > +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) > +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) > + > +/* CCA_CTRL bits */ > +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) > +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) > +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) > +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) > +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) > +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) > +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) > + > +/* ANT_PAD_CTRL bits */ > +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) > +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) > +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) > +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) > +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) > + > +/* MISC_PAD_CTRL bits */ > +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) > +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) > +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) > +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) > + > +/* ANT_AGC_CTRL bits */ > +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) > +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) > +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) > +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) > + > +/* BSM_CTRL bits */ > +#define BSM_CTRL_BSM_EN (1) > + > +/* SOFT_RESET bits */ > +#define IAR_SOFT_RESET_SOG_RST BIT(7) > +#define IAR_SOFT_RESET_REGS_RST BIT(4) > +#define IAR_SOFT_RESET_PLL_RST BIT(3) > +#define IAR_SOFT_RESET_TX_RST BIT(2) > +#define IAR_SOFT_RESET_RX_RST BIT(1) > +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) > + > +/* SEQ_MGR_CTRL bits */ > +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) > +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) > +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) > +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) > +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) > +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) > +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) > +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) > + > +/* SEQ_MGR_STS bits */ > +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) > +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) > +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) > +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) > +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) > +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) > + > +/* ABORT_STS bits */ > +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) > +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) > +#define IAR_ABORT_STS_SW_ABORTED BIT(0) > + > +/* IAR_FILTERFAIL_CODE2 bits */ > +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) > +#define IAR_FILTERFAIL_CODE2_9_8 (3) > + > +/* PHY_STS bits */ > +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) > +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) > +#define IAR_PHY_STS_PLL_LOCK BIT(5) > +#define IAR_PHY_STS_CRCVALID BIT(3) > +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) > +#define IAR_PHY_STS_SFD_DET BIT(1) > +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) > + > +/* TESTMODE_CTRL bits */ > +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) > +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) > +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) > +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) > +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) > + > +/* DTM_CTRL1 bits */ > +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) > +#define IAR_DTM_CTRL1_DTM_EN BIT(6) > +#define IAR_DTM_CTRL1_PAGE5 BIT(5) > +#define IAR_DTM_CTRL1_PAGE4 BIT(4) > +#define IAR_DTM_CTRL1_PAGE3 BIT(3) > +#define IAR_DTM_CTRL1_PAGE2 BIT(2) > +#define IAR_DTM_CTRL1_PAGE1 BIT(1) > +#define IAR_DTM_CTRL1_PAGE0 BIT(0) > + > +/* TX_MODE_CTRL */ > +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) > +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) > +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) > +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) > +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) > + > +#define TX_MODE_CTRL_DTS_MASK (7) > + > +#endif /* _MCR20A_H */ The rest looks fine. regards Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Xue Liu <liuxuenetmail@gmail.com> wrote: > This driver implements a subset of ieee802154_ops. It has no support > for CSMA due to lack of hardware support. It has currently no support > for its proprietary feature: Dual PAN. I think you mean, that the driver has no support for the MCR20A Dual Pan feature, because the 802.15.4 layer has no way to deal with it. A suggestion is to create two virtual devices! Does the MCR20A support any of the TSCH features?
Hello Stefan, Thanks for the second review. On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: > > Hello. > > On Mon, 2018-02-19 at 11:51, Xue Liu wrote: > > This is a driver for the NXP MCR20A 802.15.4 transceiver. > > > > The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. > > Please break the lines here around 72 chars so it can be sanely viewed > in git log. > OK. > > This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. > > > Wow, I honetsly did not realise CSMA was not done in hardware on this chip. > This can be a real problem in busy deplyoment scenarios. > > From the kernel stack perspective this make thes second timing critical item > we migth need to have a softMAC solution for. first ACK handling and now CSMA. > > If anybody on this list has an interest in digging into the time constraints > we have for this in 802.15.4 and find out if the current realtime infrastructure > of the kernel offers us what we need for these constraints this would be very > welcome! But I am drifting of the actual review of this driver. :-) > > If I remember correctly. Many 802.15.4 chips except at86rf23x have no full CSMA support. They have only CCA. Is it possible to use hrtimer to control such time constrains ? > > https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf > > > > Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> > > --- > > drivers/net/ieee802154/Kconfig | 11 + > > drivers/net/ieee802154/Makefile | 1 + > > drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ > > drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ > > 4 files changed, 1970 insertions(+) > > create mode 100644 drivers/net/ieee802154/mcr20a.c > > create mode 100644 drivers/net/ieee802154/mcr20a.h > > > > diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig > > index 303ba41..8782f56 100644 > > --- a/drivers/net/ieee802154/Kconfig > > +++ b/drivers/net/ieee802154/Kconfig > > @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS > > exposes a debugfs node for each CA8210 instance which allows > > direct use of the Cascoda API, exposing the 802.15.4 MAC > > management entities. > > + > > +config IEEE802154_MCR20A > > + tristate "MCR20A transceiver driver" > > + depends on IEEE802154_DRIVERS && MAC802154 > > + depends on SPI > > + ---help--- > > + Say Y here to enable the MCR20A SPI 802.15.4 wireless > > + controller. > > + > > + This driver can also be built as a module. To do so, say M here. > > + the module will be called 'mcr20a'. > > diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile > > index bea1de5..104744d 100644 > > --- a/drivers/net/ieee802154/Makefile > > +++ b/drivers/net/ieee802154/Makefile > > @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o > > obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o > > obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o > > obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o > > +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o > > diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c > > new file mode 100644 > > index 0000000..90712e9 > > --- /dev/null > > +++ b/drivers/net/ieee802154/mcr20a.c > > @@ -0,0 +1,1460 @@ > > +/* > > + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller > > + * > > + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License version 2 > > + * as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope that it will be useful, > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > + * GNU General Public License for more details. > > + * > > + */ > > +#include <linux/kernel.h> > > +#include <linux/module.h> > > +#include <linux/gpio.h> > > +#include <linux/spi/spi.h> > > +#include <linux/workqueue.h> > > +#include <linux/interrupt.h> > > +#include <linux/skbuff.h> > > +#include <linux/of_gpio.h> > > +#include <linux/regmap.h> > > +#include <linux/ieee802154.h> > > +#include <linux/debugfs.h> > > + > > +#include <net/mac802154.h> > > +#include <net/cfg802154.h> > > + > > +#include <linux/device.h> > > + > > +#include "mcr20a.h" > > + > > +#define SPI_COMMAND_BUFFER 3 > > + > > +#define REGISTER_READ BIT(7) > > +#define REGISTER_WRITE (0 << 7) > > +#define REGISTER_ACCESS (0 << 6) > > +#define PACKET_BUFF_BURST_ACCESS BIT(6) > > +#define PACKET_BUFF_BYTE_ACCESS BIT(5) > > + > > +#define MCR20A_WRITE_REG(x) (x) > > +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) > > +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) > > +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) > > + > > +#define MCR20A_CMD_REG 0x80 > > +#define MCR20A_CMD_REG_MASK 0x3f > > +#define MCR20A_CMD_WRITE 0x40 > > +#define MCR20A_CMD_FB 0x20 > > Some of these indents look wrong in my mailer. Did you run this patch through > the checkpatch script? > Yes. 0 erros and 0 warnings. But I will check it again. > > +/* Number of Interrupt Request Status Register */ > > +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ > > + > > +/* MCR20A CCA Type */ > > +enum { > > + MCR20A_CCA_ED, // energy detect - CCA bit not active, > > + // not to be used for T and CCCA sequences > > + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE > > + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE > > + MCR20A_CCA_MODE3 > > +}; > > + > > +enum { > > + MCR20A_XCVSEQ_IDLE = 0x00, > > + MCR20A_XCVSEQ_RX = 0x01, > > + MCR20A_XCVSEQ_TX = 0x02, > > + MCR20A_XCVSEQ_CCA = 0x03, > > + MCR20A_XCVSEQ_TR = 0x04, > > + MCR20A_XCVSEQ_CCCA = 0x05, > > +}; > > + > > +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ > > +#define MCR20A_MIN_CHANNEL (11) > > +#define MCR20A_MAX_CHANNEL (26) > > +#define MCR20A_CHANNEL_SPACING (5) > > + > > +/* MCR20A CCA Threshold constans */ > > +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) > > +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) > > + > > +/* version 0C */ > > +#define MCR20A_OVERWRITE_VERSION (0x0C) > > + > > +/* MCR20A PLL configurations */ > > +static const u8 PLL_INT[16] = { > > + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, > > + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, > > + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, > > + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, > > + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, > > + /* 2480 */ 0x0D > > +}; > > + > > +static const u8 PLL_FRAC[16] = { > > + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, > > + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, > > + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, > > + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, > > + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, > > + /* 2480 */ 0x80 > > +}; > > + > > +static const struct reg_sequence mar20a_iar_overwrites[] = { > > + { IAR_MISC_PAD_CTRL, 0x02 }, > > + { IAR_VCO_CTRL1, 0xB3 }, > > + { IAR_VCO_CTRL2, 0x07 }, > > + { IAR_PA_TUNING, 0x71 }, > > + { IAR_CHF_IBUF, 0x2F }, > > + { IAR_CHF_QBUF, 0x2F }, > > + { IAR_CHF_IRIN, 0x24 }, > > + { IAR_CHF_QRIN, 0x24 }, > > + { IAR_CHF_IL, 0x24 }, > > + { IAR_CHF_QL, 0x24 }, > > + { IAR_CHF_CC1, 0x32 }, > > + { IAR_CHF_CCL, 0x1D }, > > + { IAR_CHF_CC2, 0x2D }, > > + { IAR_CHF_IROUT, 0x24 }, > > + { IAR_CHF_QROUT, 0x24 }, > > + { IAR_PA_CAL, 0x28 }, > > + { IAR_AGC_THR1, 0x55 }, > > + { IAR_AGC_THR2, 0x2D }, > > + { IAR_ATT_RSSI1, 0x5F }, > > + { IAR_ATT_RSSI2, 0x8F }, > > + { IAR_RSSI_OFFSET, 0x61 }, > > + { IAR_CHF_PMA_GAIN, 0x03 }, > > + { IAR_CCA1_THRESH, 0x50 }, > > + { IAR_CORR_NVAL, 0x13 }, > > + { IAR_ACKDELAY, 0x3D }, > > +}; > > + > > +#define MCR20A_VALID_CHANNELS (0x07FFF800) > > + > > +struct mcr20a_platform_data { > > + int rst_gpio; > > +}; > > + > > +#define MCR20A_MAX_BUF (127) > > + > > +#define printdev(X) (&X->spi->dev) > > + > > +/* regmap information for Direct Access Register (DAR) access */ > > +#define MCR20A_DAR_WRITE 0x01 > > +#define MCR20A_DAR_READ 0x00 > > +#define MCR20A_DAR_NUMREGS 0x3F > > + > > +/* regmap information for Indirect Access Register (IAR) access */ > > +#define MCR20A_IAR_ACCESS 0x80 > > +#define MCR20A_IAR_NUMREGS 0xBEFF > > + > > +/* Read/Write SPI Commands for DAR and IAR registers. */ > > +#define MCR20A_READSHORT(reg) ((reg) << 1) > > +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) > > +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) > > +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) > > + > > +/* Type definitions for link configuration of instantiable layers */ > > +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) > > + > > +static bool > > +mcr20a_dar_writeable(struct device *dev, unsigned int reg) > > +{ > > + switch (reg) { > > + case DAR_IRQ_STS1: > > + case DAR_IRQ_STS2: > > + case DAR_IRQ_STS3: > > + case DAR_PHY_CTRL1: > > + case DAR_PHY_CTRL2: > > + case DAR_PHY_CTRL3: > > + case DAR_PHY_CTRL4: > > + case DAR_SRC_CTRL: > > + case DAR_SRC_ADDRS_SUM_LSB: > > + case DAR_SRC_ADDRS_SUM_MSB: > > + case DAR_T3CMP_LSB: > > + case DAR_T3CMP_MSB: > > + case DAR_T3CMP_USB: > > + case DAR_T2PRIMECMP_LSB: > > + case DAR_T2PRIMECMP_MSB: > > + case DAR_T1CMP_LSB: > > + case DAR_T1CMP_MSB: > > + case DAR_T1CMP_USB: > > + case DAR_T2CMP_LSB: > > + case DAR_T2CMP_MSB: > > + case DAR_T2CMP_USB: > > + case DAR_T4CMP_LSB: > > + case DAR_T4CMP_MSB: > > + case DAR_T4CMP_USB: > > + case DAR_PLL_INT0: > > + case DAR_PLL_FRAC0_LSB: > > + case DAR_PLL_FRAC0_MSB: > > + case DAR_PA_PWR: > > + /* no DAR_ACM */ > > + case DAR_OVERWRITE_VER: > > + case DAR_CLK_OUT_CTRL: > > + case DAR_PWR_MODES: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static bool > > +mcr20a_dar_readable(struct device *dev, unsigned int reg) > > +{ > > + bool rc; > > + > > + /* all writeable are also readable */ > > + rc = mcr20a_dar_writeable(dev, reg); > > + if (rc) > > + return rc; > > + > > + /* readonly regs */ > > + switch (reg) { > > + case DAR_RX_FRM_LEN: > > + case DAR_CCA1_ED_FNL: > > + case DAR_EVENT_TMR_LSB: > > + case DAR_EVENT_TMR_MSB: > > + case DAR_EVENT_TMR_USB: > > + case DAR_TIMESTAMP_LSB: > > + case DAR_TIMESTAMP_MSB: > > + case DAR_TIMESTAMP_USB: > > + case DAR_SEQ_STATE: > > + case DAR_LQI_VALUE: > > + case DAR_RSSI_CCA_CONT: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static bool > > +mcr20a_dar_volatile(struct device *dev, unsigned int reg) > > +{ > > + /* can be changed during runtime */ > > + switch (reg) { > > + case DAR_IRQ_STS1: > > + case DAR_IRQ_STS2: > > + case DAR_IRQ_STS3: > > + /* use them in spi_async and regmap so it's volatile */ > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static bool > > +mcr20a_dar_precious(struct device *dev, unsigned int reg) > > +{ > > + /* don't clear irq line on read */ > > + switch (reg) { > > + case DAR_IRQ_STS1: > > + case DAR_IRQ_STS2: > > + case DAR_IRQ_STS3: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static const struct regmap_config mcr20a_dar_regmap = { > > + .name = "mcr20a_dar", > > + .reg_bits = 8, > > + .val_bits = 8, > > + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, > > + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, > > + .cache_type = REGCACHE_RBTREE, > > + .writeable_reg = mcr20a_dar_writeable, > > + .readable_reg = mcr20a_dar_readable, > > + .volatile_reg = mcr20a_dar_volatile, > > + .precious_reg = mcr20a_dar_precious, > > + .fast_io = true, > > + .can_multi_write = true, > > +}; > > + > > +static bool > > +mcr20a_iar_writeable(struct device *dev, unsigned int reg) > > +{ > > + switch (reg) { > > + case IAR_XTAL_TRIM: > > + case IAR_PMC_LP_TRIM: > > + case IAR_MACPANID0_LSB: > > + case IAR_MACPANID0_MSB: > > + case IAR_MACSHORTADDRS0_LSB: > > + case IAR_MACSHORTADDRS0_MSB: > > + case IAR_MACLONGADDRS0_0: > > + case IAR_MACLONGADDRS0_8: > > + case IAR_MACLONGADDRS0_16: > > + case IAR_MACLONGADDRS0_24: > > + case IAR_MACLONGADDRS0_32: > > + case IAR_MACLONGADDRS0_40: > > + case IAR_MACLONGADDRS0_48: > > + case IAR_MACLONGADDRS0_56: > > + case IAR_RX_FRAME_FILTER: > > + case IAR_PLL_INT1: > > + case IAR_PLL_FRAC1_LSB: > > + case IAR_PLL_FRAC1_MSB: > > + case IAR_MACPANID1_LSB: > > + case IAR_MACPANID1_MSB: > > + case IAR_MACSHORTADDRS1_LSB: > > + case IAR_MACSHORTADDRS1_MSB: > > + case IAR_MACLONGADDRS1_0: > > + case IAR_MACLONGADDRS1_8: > > + case IAR_MACLONGADDRS1_16: > > + case IAR_MACLONGADDRS1_24: > > + case IAR_MACLONGADDRS1_32: > > + case IAR_MACLONGADDRS1_40: > > + case IAR_MACLONGADDRS1_48: > > + case IAR_MACLONGADDRS1_56: > > + case IAR_DUAL_PAN_CTRL: > > + case IAR_DUAL_PAN_DWELL: > > + case IAR_CCA1_THRESH: > > + case IAR_CCA1_ED_OFFSET_COMP: > > + case IAR_LQI_OFFSET_COMP: > > + case IAR_CCA_CTRL: > > + case IAR_CCA2_CORR_PEAKS: > > + case IAR_CCA2_CORR_THRESH: > > + case IAR_TMR_PRESCALE: > > + case IAR_ANT_PAD_CTRL: > > + case IAR_MISC_PAD_CTRL: > > + case IAR_BSM_CTRL: > > + case IAR_RNG: > > + case IAR_RX_WTR_MARK: > > + case IAR_SOFT_RESET: > > + case IAR_TXDELAY: > > + case IAR_ACKDELAY: > > + case IAR_CORR_NVAL: > > + case IAR_ANT_AGC_CTRL: > > + case IAR_AGC_THR1: > > + case IAR_AGC_THR2: > > + case IAR_PA_CAL: > > + case IAR_ATT_RSSI1: > > + case IAR_ATT_RSSI2: > > + case IAR_RSSI_OFFSET: > > + case IAR_XTAL_CTRL: > > + case IAR_CHF_PMA_GAIN: > > + case IAR_CHF_IBUF: > > + case IAR_CHF_QBUF: > > + case IAR_CHF_IRIN: > > + case IAR_CHF_QRIN: > > + case IAR_CHF_IL: > > + case IAR_CHF_QL: > > + case IAR_CHF_CC1: > > + case IAR_CHF_CCL: > > + case IAR_CHF_CC2: > > + case IAR_CHF_IROUT: > > + case IAR_CHF_QROUT: > > + case IAR_PA_TUNING: > > + case IAR_VCO_CTRL1: > > + case IAR_VCO_CTRL2: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static bool > > +mcr20a_iar_readable(struct device *dev, unsigned int reg) > > +{ > > + bool rc; > > + > > + /* all writeable are also readable */ > > + rc = mcr20a_iar_writeable(dev, reg); > > + if (rc) > > + return rc; > > + > > + /* readonly regs */ > > + switch (reg) { > > + case IAR_PART_ID: > > + case IAR_DUAL_PAN_STS: > > + case IAR_RX_BYTE_COUNT: > > + case IAR_FILTERFAIL_CODE1: > > + case IAR_FILTERFAIL_CODE2: > > + case IAR_RSSI: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static bool > > +mcr20a_iar_volatile(struct device *dev, unsigned int reg) > > +{ > > +/* can be changed during runtime */ > > + switch (reg) { > > + case IAR_DUAL_PAN_STS: > > + case IAR_RX_BYTE_COUNT: > > + case IAR_FILTERFAIL_CODE1: > > + case IAR_FILTERFAIL_CODE2: > > + case IAR_RSSI: > > + return true; > > + default: > > + return false; > > + } > > +} > > + > > +static const struct regmap_config mcr20a_iar_regmap = { > > + .name = "mcr20a_iar", > > + .reg_bits = 16, > > + .val_bits = 8, > > + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, > > + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, > > + .cache_type = REGCACHE_RBTREE, > > + .writeable_reg = mcr20a_iar_writeable, > > + .readable_reg = mcr20a_iar_readable, > > + .volatile_reg = mcr20a_iar_volatile, > > + .fast_io = true, > > +}; > > + > > +struct mcr20a_local { > > + struct spi_device *spi; > > + > > + struct ieee802154_hw *hw; > > + struct mcr20a_platform_data *pdata; > > + struct regmap *regmap_dar; > > + struct regmap *regmap_iar; > > + > > + u8 *buf; > > + > > + bool is_tx; > > + > > + /* for writing tx buffer */ > > + struct spi_message tx_buf_msg; > > + u8 tx_header[1]; > > + /* burst buffer write command */ > > + struct spi_transfer tx_xfer_header; > > + u8 tx_len[1]; > > + /* len of tx packet */ > > + struct spi_transfer tx_xfer_len; > > + /* data of tx packet */ > > + struct spi_transfer tx_xfer_buf; > > + struct sk_buff *tx_skb; > > + > > + /* for read length rxfifo */ > > + struct spi_message reg_msg; > > + u8 reg_cmd[1]; > > + u8 reg_data[MCR20A_IRQSTS_NUM]; > > + struct spi_transfer reg_xfer_cmd; > > + struct spi_transfer reg_xfer_data; > > + > > + /* receive handling */ > > + struct spi_message rx_buf_msg; > > + u8 rx_header[1]; > > + struct spi_transfer rx_xfer_header; > > + u8 rx_lqi[1]; > > + struct spi_transfer rx_xfer_lqi; > > + u8 rx_buf[MCR20A_MAX_BUF]; > > + struct spi_transfer rx_xfer_buf; > > + > > + /* isr handling for reading intstat */ > > + struct spi_message irq_msg; > > + u8 irq_header[1]; > > + u8 irq_data[MCR20A_IRQSTS_NUM]; > > + struct spi_transfer irq_xfer_data; > > + struct spi_transfer irq_xfer_header; > > +}; > > + > > +static void > > +mcr20a_write_tx_buf_complete(void *context) > > +{ > > + struct mcr20a_local *lp = context; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + lp->reg_msg.complete = NULL; > > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); > > + lp->reg_data[0] = MCR20A_XCVSEQ_TX; > > + lp->reg_xfer_data.len = 1; > > + > > + ret = spi_async(lp->spi, &lp->reg_msg); > > + if (ret) > > + dev_err(printdev(lp), "failed to set SEQ TX\n"); > > +} > > + > > +static int > > +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + lp->tx_skb = skb; > > + > > +#ifdef DEBUG > > + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, > > + skb->data, skb->len, 0); > > +#endif > > + > > + lp->is_tx = 1; > > + > > + lp->reg_msg.complete = NULL; > > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); > > + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; > > + lp->reg_xfer_data.len = 1; > > + > > + return spi_async(lp->spi, &lp->reg_msg); > > +} > > + > > +static int > > +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + unsigned int val = 0; > > + u8 energy_level; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); > > + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { > > + /* Change CCA Type to 00 - Energy Detect */ > > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); > > + /* Perform ED */ > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, > > + MCR20A_XCVSEQ_CCA); > > + val = 0; > > + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) > > + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); > > + /* the energy level scaled in 0x00 - 0xFF */ > > + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); > > + energy_level = (u8)val; > > + > > + if (energy_level >= 90) { > > + /* ED value is below minimum. Return 0x00. */ > > + energy_level = 0x00; > > + } else if (energy_level <= 26) { > > + /* ED value is above maximum. Return 0xFF. */ > > + energy_level = 0xFF; > > + } else { > > + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ > > + energy_level = (90 - energy_level); > > + energy_level <<= 2; > > + } > > + > > + *level = energy_level; > > + } else { > > + /* switch to IDLE at first */ > > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, > > + MCR20A_XCVSEQ_IDLE); > > + } > > + > > + return 0; > > +} > > + > > +static int > > +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + int ret; > > + > > + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); > > Nitpick. Typo in channel here. Might as well use __func__ :) > Correct. > > + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ > > + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); > > + if (ret) > > + return ret; > > + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); > > + if (ret) > > + return ret; > > + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, > > + PLL_FRAC[channel - 11]); > > + if (ret) > > + return ret; > > + > > + return 0; > > +} > > + > > +static int > > +mcr20a_start(struct ieee802154_hw *hw) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* No slotted operation */ > > + dev_dbg(printdev(lp), "no slotted operation\n"); > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_SLOTTED, 0x0); > > + > > + /* enable irq */ > > + enable_irq(lp->spi->irq); > > + > > + /* Unmask SEQ interrupt */ > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, > > + DAR_PHY_CTRL2_SEQMSK, 0x0); > > + > > + /* Start the RX sequence */ > > + dev_dbg(printdev(lp), "start the RX sequence\n"); > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); > > + > > + return 0; > > +} > > + > > +static void > > +mcr20a_stop(struct ieee802154_hw *hw) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* stop all running sequence */ > > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); > > + > > + /* disable irq */ > > + disable_irq(lp->spi->irq); > > +} > > + > > +static int > > +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, > > + struct ieee802154_hw_addr_filt *filt, > > + unsigned long changed) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { > > + u16 addr = le16_to_cpu(filt->short_addr); > > + > > + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); > > + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); > > + } > > + > > + if (changed & IEEE802154_AFILT_PANID_CHANGED) { > > + u16 pan = le16_to_cpu(filt->pan_id); > > + > > + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); > > + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); > > + } > > + > > + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { > > + u8 addr[8], i; > > + > > + memcpy(addr, &filt->ieee_addr, 8); > > + for (i = 0; i < 8; i++) > > + regmap_write(lp->regmap_iar, > > + IAR_MACLONGADDRS0_0 + i, addr[i]); > > + } > > + > > + if (changed & IEEE802154_AFILT_PANC_CHANGED) { > > + if (filt->pan_coord) { > > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > > + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); > > + } else { > > + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > > + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); > > + } > > + } > > + > > + return 0; > > +} > > + > > +/* -30 dBm to 10 dBm */ > > +#define MCR20A_MAX_TX_POWERS 0x14 > > +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { > > + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, > > + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 > > +}; > > + > > +static int > > +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + u32 i; > > + > > + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); > > + > > + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { > > + if (lp->hw->phy->supported.tx_powers[i] == mbm) > > + return regmap_write(lp->regmap_dar, DAR_PA_PWR, > > + ((i + 8) & 0x1F)); > > + } > > + > > + return -EINVAL; > > +} > > + > > +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD > > +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; > > + > > +static int > > +mcr20a_set_cca_mode(struct ieee802154_hw *hw, > > + const struct wpan_phy_cca *cca) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + unsigned int cca_mode = 0xff; > > + bool cca_mode_and = false; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* mapping 802.15.4 to driver spec */ > > + switch (cca->mode) { > > + case NL802154_CCA_ENERGY: > > + cca_mode = MCR20A_CCA_MODE1; > > + break; > > + case NL802154_CCA_CARRIER: > > + cca_mode = MCR20A_CCA_MODE2; > > + break; > > + case NL802154_CCA_ENERGY_CARRIER: > > + switch (cca->opt) { > > + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: > > + cca_mode = MCR20A_CCA_MODE3; > > + cca_mode_and = true; > > + break; > > + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: > > + cca_mode = MCR20A_CCA_MODE3; > > + cca_mode_and = false; > > + break; > > + default: > > + return -EINVAL; > > + } > > + break; > > + default: > > + return -EINVAL; > > + } > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > > + DAR_PHY_CTRL4_CCATYPE_MASK, > > + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); > > + if (ret < 0) > > + return ret; > > + > > + if (cca_mode == MCR20A_CCA_MODE3) { > > + if (cca_mode_and) { > > + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, > > + IAR_CCA_CTRL_CCA3_AND_NOT_OR, > > + 0x08); > > + } else { > > + ret = regmap_update_bits(lp->regmap_iar, > > + IAR_CCA_CTRL, > > + IAR_CCA_CTRL_CCA3_AND_NOT_OR, > > + 0x00); > > + } > > + if (ret < 0) > > + return ret; > > + } > > + > > + return ret; > > +} > > + > > +static int > > +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + u32 i; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { > > + if (hw->phy->supported.cca_ed_levels[i] == mbm) > > + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); > > + } > > + > > + return 0; > > +} > > + > > +static int > > +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) > > +{ > > + struct mcr20a_local *lp = hw->priv; > > + int ret; > > + u8 rx_frame_filter_reg = 0x0; > > + u8 val; > > + > > + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); > > + > > + if (on) { > > + /* All frame types accepted*/ > > + val |= DAR_PHY_CTRL4_PROMISCUOUS; > > + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); > > + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | > > + IAR_RX_FRAME_FLT_NS_FT); > > + > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > > + DAR_PHY_CTRL4_PROMISCUOUS, > > + DAR_PHY_CTRL4_PROMISCUOUS); > > + if (ret < 0) > > + return ret; > > + > > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > > + rx_frame_filter_reg); > > + if (ret < 0) > > + return ret; > > + } else { > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, > > + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); > > + if (ret < 0) > > + return ret; > > + > > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > > + IAR_RX_FRAME_FLT_FRM_VER | > > + IAR_RX_FRAME_FLT_BEACON_FT | > > + IAR_RX_FRAME_FLT_DATA_FT | > > + IAR_RX_FRAME_FLT_CMD_FT); > > + if (ret < 0) > > + return ret; > > + } > > + > > + return 0; > > +} > > + > > +static const struct ieee802154_ops mcr20a_hw_ops = { > > + .owner = THIS_MODULE, > > + .xmit_async = mcr20a_xmit, > > + .ed = mcr20a_ed, > > + .set_channel = mcr20a_set_channel, > > + .start = mcr20a_start, > > + .stop = mcr20a_stop, > > + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, > > + .set_txpower = mcr20a_set_txpower, > > + .set_cca_mode = mcr20a_set_cca_mode, > > + .set_cca_ed_level = mcr20a_set_cca_ed_level, > > + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, > > +}; > > + > > +static int > > +mcr20a_request_rx(struct mcr20a_local *lp) > > +{ > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* Start the RX sequence */ > > + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); > > + > > + return 0; > > +} > > + > > +static void > > +mcr20a_handle_rx_read_buf_complete(void *context) > > +{ > > + struct mcr20a_local *lp = context; > > + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; > > + struct sk_buff *skb; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + dev_dbg(printdev(lp), "RX is done\n"); > > + > > + if (!ieee802154_is_valid_psdu_len(len)) { > > + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); > > + len = IEEE802154_MTU; > > + } > > + > > + len = len - 2; /* get rid of frame check field */ > > + > > + skb = dev_alloc_skb(len); > > + if (!skb) > > + return; > > + > > + memcpy(skb_put(skb, len), lp->rx_buf, len); > > + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); > > + > > +#ifdef DEBUG > > + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, > > + lp->rx_buf, len, 0); > > + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); > > +#endif > > Here, as well as in the corresponding TX hex_dump call I wonder how to better > make use of it. Recompiling the driver to get the dump is not really nice. > Having a way to have this enabled during runtime might be better. And across > all drivers. Just thinking out loud here. Not saying you need to be he one > implementing it. What do you think? > > using module parameters may a solution. > > + /* start RX sequence */ > > + mcr20a_request_rx(lp); > > +} > > + > > +static void > > +mcr20a_handle_rx_read_len_complete(void *context) > > +{ > > + struct mcr20a_local *lp = context; > > + u8 len; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* get the length of received frame */ > > + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; > > + dev_dbg(printdev(lp), "frame len : %d\n", len); > > + > > + /* prepare to read the rx buf */ > > + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; > > + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; > > + lp->rx_xfer_buf.len = len; > > + > > + ret = spi_async(lp->spi, &lp->rx_buf_msg); > > + if (ret) > > + dev_err(printdev(lp), "failed to read rx buffer length\n"); > > +} > > + > > +static int > > +mcr20a_handle_rx(struct mcr20a_local *lp) > > +{ > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; > > + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); > > + lp->reg_xfer_data.len = 1; > > + > > + return spi_async(lp->spi, &lp->reg_msg); > > +} > > + > > +static int > > +mcr20a_handle_tx_complete(struct mcr20a_local *lp) > > +{ > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); > > + > > + return mcr20a_request_rx(lp); > > +} > > + > > +static int > > +mcr20a_handle_tx(struct mcr20a_local *lp) > > +{ > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* write tx buffer */ > > + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; > > + /* add 2 bytes of FCS */ > > + lp->tx_len[0] = lp->tx_skb->len + 2; > > + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; > > + /* add 1 byte psduLength */ > > + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; > > + > > + ret = spi_async(lp->spi, &lp->tx_buf_msg); > > + if (ret) { > > + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); > > + return ret; > > + } > > + > > + return 0; > > +} > > + > > +static void > > +mcr20a_irq_clean_complete(void *context) > > +{ > > + struct mcr20a_local *lp = context; > > + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + enable_irq(lp->spi->irq); > > + > > + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", > > + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); > > + > > + switch (seq_state) { > > + /* TX IRQ, RX IRQ and SEQ IRQ */ > > + case (0x03): > > + if (lp->is_tx) { > > + lp->is_tx = 0; > > + dev_dbg(printdev(lp), "TX is done. No ACK\n"); > > + mcr20a_handle_tx_complete(lp); > > + } > > + break; > > + case (0x05): > > + /* rx is starting */ > > + dev_dbg(printdev(lp), "RX is starting\n"); > > + mcr20a_handle_rx(lp); > > + break; > > + case (0x07): > > + if (lp->is_tx) { > > + /* tx is done */ > > + lp->is_tx = 0; > > + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); > > + mcr20a_handle_tx_complete(lp); > > + } else { > > + /* rx is starting */ > > + dev_dbg(printdev(lp), "RX is starting\n"); > > + mcr20a_handle_rx(lp); > > + } > > + break; > > + case (0x01): > > + if (lp->is_tx) { > > + dev_dbg(printdev(lp), "TX is starting\n"); > > + mcr20a_handle_tx(lp); > > + } else { > > + dev_dbg(printdev(lp), "MCR20A is stop\n"); > > + } > > + break; > > + } > > +} > > + > > +static void mcr20a_irq_status_complete(void *context) > > +{ > > + int ret; > > + struct mcr20a_local *lp = context; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); > > + > > + lp->reg_msg.complete = mcr20a_irq_clean_complete; > > + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); > > + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); > > + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; > > + > > + ret = spi_async(lp->spi, &lp->reg_msg); > > + > > + if (ret) > > + dev_err(printdev(lp), "failed to clean irq status\n"); > > +} > > + > > +static irqreturn_t mcr20a_irq_isr(int irq, void *data) > > +{ > > + struct mcr20a_local *lp = data; > > + int ret; > > + > > + disable_irq_nosync(irq); > > + > > + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); > > + /* read IRQSTSx */ > > + ret = spi_async(lp->spi, &lp->irq_msg); > > + if (ret) { > > + enable_irq(irq); > > + return IRQ_NONE; > > + } > > + > > + return IRQ_HANDLED; > > +} > > + > > +static int mcr20a_get_platform_data(struct spi_device *spi, > > + struct mcr20a_platform_data *pdata) > > +{ > > + int ret = 0; > > + > > + if (!spi->dev.of_node) > > + return -EINVAL; > > + > > + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); > > + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); > > + > > + return ret; > > +} > > + > > +static void mcr20a_hw_setup(struct mcr20a_local *lp) > > +{ > > + u8 i; > > + struct ieee802154_hw *hw = lp->hw; > > + struct wpan_phy *phy = lp->hw->phy; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + phy->symbol_duration = 16; > > + phy->lifs_period = 40; > > + phy->sifs_period = 12; > > + > > + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | > > + IEEE802154_HW_AFILT | > > + IEEE802154_HW_PROMISCUOUS; > > + > > + phy->flags = WPAN_PHY_FLAG_TXPOWER | > > + WPAN_PHY_FLAG_CCA_ED_LEVEL | > > + WPAN_PHY_FLAG_CCA_MODE; > > + > > + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | > > + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); > > + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | > > + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); > > + > > + /* initiating cca_ed_levels */ > > + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; > > + ++i) { > > + mcr20a_ed_levels[i] = -i * 100; > > + } > > + > > + phy->supported.cca_ed_levels = mcr20a_ed_levels; > > + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); > > + > > + phy->cca.mode = NL802154_CCA_ENERGY; > > + > > + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; > > + phy->current_page = 0; > > + /* MCR20A default reset value */ > > + phy->current_channel = 20; > > + phy->symbol_duration = 16; > > + phy->supported.tx_powers = mcr20a_powers; > > + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); > > + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; > > + phy->transmit_power = phy->supported.tx_powers[0x0F]; > > +} > > + > > +static void > > +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) > > +{ > > + spi_message_init(&lp->tx_buf_msg); > > + lp->tx_buf_msg.context = lp; > > + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; > > + > > + lp->tx_xfer_header.len = 1; > > + lp->tx_xfer_header.tx_buf = lp->tx_header; > > + > > + lp->tx_xfer_len.len = 1; > > + lp->tx_xfer_len.tx_buf = lp->tx_len; > > + > > + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); > > + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); > > + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); > > +} > > + > > +static void > > +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) > > +{ > > + spi_message_init(&lp->reg_msg); > > + lp->reg_msg.context = lp; > > + > > + lp->reg_xfer_cmd.len = 1; > > + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; > > + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; > > + > > + lp->reg_xfer_data.rx_buf = lp->reg_data; > > + lp->reg_xfer_data.tx_buf = lp->reg_data; > > + > > + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); > > + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); > > + > > + spi_message_init(&lp->rx_buf_msg); > > + lp->rx_buf_msg.context = lp; > > + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; > > + lp->rx_xfer_header.len = 1; > > + lp->rx_xfer_header.tx_buf = lp->rx_header; > > + lp->rx_xfer_header.rx_buf = lp->rx_header; > > + > > + lp->rx_xfer_buf.rx_buf = lp->rx_buf; > > + > > + lp->rx_xfer_lqi.len = 1; > > + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; > > + > > + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); > > + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); > > + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); > > +} > > + > > +static void > > +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) > > +{ > > + spi_message_init(&lp->irq_msg); > > + lp->irq_msg.context = lp; > > + lp->irq_msg.complete = mcr20a_irq_status_complete; > > + lp->irq_xfer_header.len = 1; > > + lp->irq_xfer_header.tx_buf = lp->irq_header; > > + lp->irq_xfer_header.rx_buf = lp->irq_header; > > + > > + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; > > + lp->irq_xfer_data.rx_buf = lp->irq_data; > > + > > + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); > > + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); > > +} > > + > > +static int > > +mcr20a_phy_init(struct mcr20a_local *lp) > > +{ > > + u8 index; > > + unsigned int phy_reg = 0; > > + int ret; > > + > > + dev_dbg(printdev(lp), "%s\n", __func__); > > + > > + /* Disable Tristate on COCO MISO for SPI reads */ > > + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); > > + if (ret) > > + goto err_ret; > > + > > + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts > > + * immediately after init > > + */ > > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); > > + if (ret) > > + goto err_ret; > > + > > + /* Clear all PP IRQ bits in IRQSTS2 */ > > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, > > + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | > > + DAR_IRQSTS2_WAKE_IRQ); > > + if (ret) > > + goto err_ret; > > + > > + /* Disable all timer interrupts */ > > + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); > > + if (ret) > > + goto err_ret; > > + > > + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, > > + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); > > + > > + /* PHY_CTRL2 : disable all interrupts */ > > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); > > + if (ret) > > + goto err_ret; > > + > > + /* PHY_CTRL3 : disable all timers and remaining interrupts */ > > + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, > > + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | > > + DAR_PHY_CTRL3_WAKE_MSK); > > + if (ret) > > + goto err_ret; > > + > > + /* SRC_CTRL : enable Acknowledge Frame Pending and > > + * Source Address Matching Enable > > + */ > > + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, > > + DAR_SRC_CTRL_ACK_FRM_PND | > > + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); > > + if (ret) > > + goto err_ret; > > + > > + /* RX_FRAME_FILTER */ > > + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ > > + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, > > + IAR_RX_FRAME_FLT_FRM_VER | > > + IAR_RX_FRAME_FLT_BEACON_FT | > > + IAR_RX_FRAME_FLT_DATA_FT | > > + IAR_RX_FRAME_FLT_CMD_FT); > > + if (ret) > > + goto err_ret; > > + > > + dev_info(printdev(lp), "overwrites version: 0x%02x\n", > > + MCR20A_OVERWRITE_VERSION); > > + > > + /* Overwrites direct registers */ > > + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, > > + MCR20A_OVERWRITE_VERSION); > > + if (ret) > > + goto err_ret; > > + > > + /* Overwrites indirect registers */ > > + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, > > + ARRAY_SIZE(mar20a_iar_overwrites)); > > + if (ret) > > + goto err_ret; > > + > > + /* Clear HW indirect queue */ > > + dev_dbg(printdev(lp), "clear HW indirect queue\n"); > > + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { > > + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << > > + DAR_SRC_CTRL_INDEX_SHIFT) > > + | (DAR_SRC_CTRL_SRCADDR_EN) > > + | (DAR_SRC_CTRL_INDEX_DISABLE)); > > + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); > > + if (ret) > > + goto err_ret; > > + phy_reg = 0; > > + } > > + > > + /* Assign HW Indirect hash table to PAN0 */ > > + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); > > + if (ret) > > + goto err_ret; > > + > > + /* Clear current lvl */ > > + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; > > + > > + /* Set new lvl */ > > + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << > > + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; > > + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); > > + if (ret) > > + goto err_ret; > > + > > + /* set CCA threshold to -75 dBm */ > > + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); > > + if (ret) > > + goto err_ret; > > + > > + /* set prescaller to obtain 1 symbol (16us) timebase */ > > + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); > > + if (ret) > > + goto err_ret; > > + > > + /* enable autodoze mode. */ > > + dev_dbg(printdev(lp), "enable autodoze mode\n"); > > + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, > > + DAR_PWR_MODES_AUTODOZE, > > + DAR_PWR_MODES_AUTODOZE); > > + if (ret) > > + goto err_ret; > > + > > + /* disable clk_out */ > > + dev_dbg(printdev(lp), "disable clk_out\n"); > > + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, > > + DAR_CLK_OUT_CTRL_EN, 0x0); > > + if (ret) > > + goto err_ret; > > + > > + return 0; > > + > > +err_ret: > > + return ret; > > +} > > + > > +static int > > +mcr20a_probe(struct spi_device *spi) > > +{ > > + struct ieee802154_hw *hw; > > + struct mcr20a_local *lp; > > + struct mcr20a_platform_data *pdata; > > + int irq_type; > > + int ret = -ENOMEM; > > + > > + dev_dbg(&spi->dev, "%s\n", __func__); > > + > > + if (!spi->irq) { > > + dev_err(&spi->dev, "no IRQ specified\n"); > > + return -EINVAL; > > + } > > + > > + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); > > + if (!pdata) > > + return -ENOMEM; > > + > > + /* set mcr20a platform data */ > > + ret = mcr20a_get_platform_data(spi, pdata); > > + if (ret < 0) { > > + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); > > + return ret; > > + } > > + > > + /* init reset gpio */ > > + if (gpio_is_valid(pdata->rst_gpio)) { > > + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, > > + GPIOF_OUT_INIT_HIGH, "reset"); > > + if (ret) > > + return ret; > > + } > > + > > + /* reset mcr20a */ > > + if (gpio_is_valid(pdata->rst_gpio)) { > > + usleep_range(10, 20); > > + gpio_set_value_cansleep(pdata->rst_gpio, 0); > > + usleep_range(10, 20); > > + gpio_set_value_cansleep(pdata->rst_gpio, 1); > > + usleep_range(120, 240); > > + } > > + > > + /* allocate ieee802154_hw and private data */ > > + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); > > + if (!hw) { > > + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); > > + return -ENOMEM; > > + } > > + > > + /* init mcr20a local data */ > > + lp = hw->priv; > > + lp->hw = hw; > > + lp->spi = spi; > > + lp->spi->dev.platform_data = pdata; > > + lp->pdata = pdata; > > + > > + /* init ieee802154_hw */ > > + hw->parent = &spi->dev; > > + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); > > + > > + /* init buf */ > > + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); > > + > > + if (!lp->buf) > > + return -ENOMEM; > > + > > + mcr20a_setup_tx_spi_messages(lp); > > + mcr20a_setup_rx_spi_messages(lp); > > + mcr20a_setup_irq_spi_messages(lp); > > + > > + /* setup regmap */ > > + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); > > + if (IS_ERR(lp->regmap_dar)) { > > + ret = PTR_ERR(lp->regmap_dar); > > + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", > > + ret); > > + goto free_dev; > > + } > > + > > + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); > > + if (IS_ERR(lp->regmap_iar)) { > > + ret = PTR_ERR(lp->regmap_iar); > > + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); > > + goto free_dev; > > + } > > + > > + mcr20a_hw_setup(lp); > > + > > + spi_set_drvdata(spi, lp); > > + > > + ret = mcr20a_phy_init(lp); > > + if (ret < 0) { > > + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); > > + goto free_dev; > > + } > > + > > + irq_type = irq_get_trigger_type(spi->irq); > > + if (!irq_type) > > + irq_type = IRQF_TRIGGER_FALLING; > > + > > + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, > > + irq_type, dev_name(&spi->dev), lp); > > + if (ret) { > > + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); > > + ret = -ENODEV; > > + goto free_dev; > > + } > > + > > + /* disable_irq by default and wait for starting hardware */ > > + disable_irq(spi->irq); > > + > > + ret = ieee802154_register_hw(hw); > > + if (ret) { > > + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); > > + goto free_dev; > > + } > > + > > + return ret; > > + > > +free_dev: > > + ieee802154_free_hw(lp->hw); > > + > > + return ret; > > +} > > + > > +static int mcr20a_remove(struct spi_device *spi) > > +{ > > + struct mcr20a_local *lp = spi_get_drvdata(spi); > > + > > + dev_dbg(&spi->dev, "%s\n", __func__); > > + > > + ieee802154_unregister_hw(lp->hw); > > + ieee802154_free_hw(lp->hw); > > + > > + return 0; > > +} > > + > > +static const struct of_device_id mcr20a_of_match[] = { > > + { .compatible = "nxp,mcr20a", }, > > + { }, > > +}; > > +MODULE_DEVICE_TABLE(of, mcr20a_of_match); > > + > > +static const struct spi_device_id mcr20a_device_id[] = { > > + { .name = "mcr20a", }, > > + { }, > > +}; > > +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); > > + > > +static struct spi_driver mcr20a_driver = { > > + .id_table = mcr20a_device_id, > > + .driver = { > > + .of_match_table = of_match_ptr(mcr20a_of_match), > > + .name = "mcr20a", > > + }, > > + .probe = mcr20a_probe, > > + .remove = mcr20a_remove, > > +}; > > + > > +module_spi_driver(mcr20a_driver); > > + > > +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); > > +MODULE_LICENSE("GPL v2"); > > +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); > > diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h > > new file mode 100644 > > index 0000000..6da4fd0 > > --- /dev/null > > +++ b/drivers/net/ieee802154/mcr20a.h > > @@ -0,0 +1,498 @@ > > +/* > > + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller > > + * > > + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License version 2 > > + * as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope that it will be useful, > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > + * GNU General Public License for more details. > > + * > > + */ > > +#ifndef _MCR20A_H > > +#define _MCR20A_H > > + > > +/* Direct Accress Register */ > > +#define DAR_IRQ_STS1 0x00 > > +#define DAR_IRQ_STS2 0x01 > > +#define DAR_IRQ_STS3 0x02 > > +#define DAR_PHY_CTRL1 0x03 > > +#define DAR_PHY_CTRL2 0x04 > > +#define DAR_PHY_CTRL3 0x05 > > +#define DAR_RX_FRM_LEN 0x06 > > +#define DAR_PHY_CTRL4 0x07 > > +#define DAR_SRC_CTRL 0x08 > > +#define DAR_SRC_ADDRS_SUM_LSB 0x09 > > +#define DAR_SRC_ADDRS_SUM_MSB 0x0A > > +#define DAR_CCA1_ED_FNL 0x0B > > +#define DAR_EVENT_TMR_LSB 0x0C > > +#define DAR_EVENT_TMR_MSB 0x0D > > +#define DAR_EVENT_TMR_USB 0x0E > > +#define DAR_TIMESTAMP_LSB 0x0F > > +#define DAR_TIMESTAMP_MSB 0x10 > > +#define DAR_TIMESTAMP_USB 0x11 > > +#define DAR_T3CMP_LSB 0x12 > > +#define DAR_T3CMP_MSB 0x13 > > +#define DAR_T3CMP_USB 0x14 > > +#define DAR_T2PRIMECMP_LSB 0x15 > > +#define DAR_T2PRIMECMP_MSB 0x16 > > +#define DAR_T1CMP_LSB 0x17 > > +#define DAR_T1CMP_MSB 0x18 > > +#define DAR_T1CMP_USB 0x19 > > +#define DAR_T2CMP_LSB 0x1A > > +#define DAR_T2CMP_MSB 0x1B > > +#define DAR_T2CMP_USB 0x1C > > +#define DAR_T4CMP_LSB 0x1D > > +#define DAR_T4CMP_MSB 0x1E > > +#define DAR_T4CMP_USB 0x1F > > +#define DAR_PLL_INT0 0x20 > > +#define DAR_PLL_FRAC0_LSB 0x21 > > +#define DAR_PLL_FRAC0_MSB 0x22 > > +#define DAR_PA_PWR 0x23 > > +#define DAR_SEQ_STATE 0x24 > > +#define DAR_LQI_VALUE 0x25 > > +#define DAR_RSSI_CCA_CONT 0x26 > > +/*------------------ 0x27 */ > > +#define DAR_ASM_CTRL1 0x28 > > +#define DAR_ASM_CTRL2 0x29 > > +#define DAR_ASM_DATA_0 0x2A > > +#define DAR_ASM_DATA_1 0x2B > > +#define DAR_ASM_DATA_2 0x2C > > +#define DAR_ASM_DATA_3 0x2D > > +#define DAR_ASM_DATA_4 0x2E > > +#define DAR_ASM_DATA_5 0x2F > > +#define DAR_ASM_DATA_6 0x30 > > +#define DAR_ASM_DATA_7 0x31 > > +#define DAR_ASM_DATA_8 0x32 > > +#define DAR_ASM_DATA_9 0x33 > > +#define DAR_ASM_DATA_A 0x34 > > +#define DAR_ASM_DATA_B 0x35 > > +#define DAR_ASM_DATA_C 0x36 > > +#define DAR_ASM_DATA_D 0x37 > > +#define DAR_ASM_DATA_E 0x38 > > +#define DAR_ASM_DATA_F 0x39 > > +/*----------------------- 0x3A */ > > +#define DAR_OVERWRITE_VER 0x3B > > +#define DAR_CLK_OUT_CTRL 0x3C > > +#define DAR_PWR_MODES 0x3D > > +#define IAR_INDEX 0x3E > > +#define IAR_DATA 0x3F > > + > > +/* Indirect Resgister Memory */ > > +#define IAR_PART_ID 0x00 > > +#define IAR_XTAL_TRIM 0x01 > > +#define IAR_PMC_LP_TRIM 0x02 > > +#define IAR_MACPANID0_LSB 0x03 > > +#define IAR_MACPANID0_MSB 0x04 > > +#define IAR_MACSHORTADDRS0_LSB 0x05 > > +#define IAR_MACSHORTADDRS0_MSB 0x06 > > +#define IAR_MACLONGADDRS0_0 0x07 > > +#define IAR_MACLONGADDRS0_8 0x08 > > +#define IAR_MACLONGADDRS0_16 0x09 > > +#define IAR_MACLONGADDRS0_24 0x0A > > +#define IAR_MACLONGADDRS0_32 0x0B > > +#define IAR_MACLONGADDRS0_40 0x0C > > +#define IAR_MACLONGADDRS0_48 0x0D > > +#define IAR_MACLONGADDRS0_56 0x0E > > +#define IAR_RX_FRAME_FILTER 0x0F > > +#define IAR_PLL_INT1 0x10 > > +#define IAR_PLL_FRAC1_LSB 0x11 > > +#define IAR_PLL_FRAC1_MSB 0x12 > > +#define IAR_MACPANID1_LSB 0x13 > > +#define IAR_MACPANID1_MSB 0x14 > > +#define IAR_MACSHORTADDRS1_LSB 0x15 > > +#define IAR_MACSHORTADDRS1_MSB 0x16 > > +#define IAR_MACLONGADDRS1_0 0x17 > > +#define IAR_MACLONGADDRS1_8 0x18 > > +#define IAR_MACLONGADDRS1_16 0x19 > > +#define IAR_MACLONGADDRS1_24 0x1A > > +#define IAR_MACLONGADDRS1_32 0x1B > > +#define IAR_MACLONGADDRS1_40 0x1C > > +#define IAR_MACLONGADDRS1_48 0x1D > > +#define IAR_MACLONGADDRS1_56 0x1E > > +#define IAR_DUAL_PAN_CTRL 0x1F > > +#define IAR_DUAL_PAN_DWELL 0x20 > > +#define IAR_DUAL_PAN_STS 0x21 > > +#define IAR_CCA1_THRESH 0x22 > > +#define IAR_CCA1_ED_OFFSET_COMP 0x23 > > +#define IAR_LQI_OFFSET_COMP 0x24 > > +#define IAR_CCA_CTRL 0x25 > > +#define IAR_CCA2_CORR_PEAKS 0x26 > > +#define IAR_CCA2_CORR_THRESH 0x27 > > +#define IAR_TMR_PRESCALE 0x28 > > +/*-------------------- 0x29 */ > > +#define IAR_GPIO_DATA 0x2A > > +#define IAR_GPIO_DIR 0x2B > > +#define IAR_GPIO_PUL_EN 0x2C > > +#define IAR_GPIO_PUL_SEL 0x2D > > +#define IAR_GPIO_DS 0x2E > > +/*------------------ 0x2F */ > > +#define IAR_ANT_PAD_CTRL 0x30 > > +#define IAR_MISC_PAD_CTRL 0x31 > > +#define IAR_BSM_CTRL 0x32 > > +/*------------------- 0x33 */ > > +#define IAR_RNG 0x34 > > +#define IAR_RX_BYTE_COUNT 0x35 > > +#define IAR_RX_WTR_MARK 0x36 > > +#define IAR_SOFT_RESET 0x37 > > +#define IAR_TXDELAY 0x38 > > +#define IAR_ACKDELAY 0x39 > > +#define IAR_SEQ_MGR_CTRL 0x3A > > +#define IAR_SEQ_MGR_STS 0x3B > > +#define IAR_SEQ_T_STS 0x3C > > +#define IAR_ABORT_STS 0x3D > > +#define IAR_CCCA_BUSY_CNT 0x3E > > +#define IAR_SRC_ADDR_CHECKSUM1 0x3F > > +#define IAR_SRC_ADDR_CHECKSUM2 0x40 > > +#define IAR_SRC_TBL_VALID1 0x41 > > +#define IAR_SRC_TBL_VALID2 0x42 > > +#define IAR_FILTERFAIL_CODE1 0x43 > > +#define IAR_FILTERFAIL_CODE2 0x44 > > +#define IAR_SLOT_PRELOAD 0x45 > > +/*-------------------- 0x46 */ > > +#define IAR_CORR_VT 0x47 > > +#define IAR_SYNC_CTRL 0x48 > > +#define IAR_PN_LSB_0 0x49 > > +#define IAR_PN_LSB_1 0x4A > > +#define IAR_PN_MSB_0 0x4B > > +#define IAR_PN_MSB_1 0x4C > > +#define IAR_CORR_NVAL 0x4D > > +#define IAR_TX_MODE_CTRL 0x4E > > +#define IAR_SNF_THR 0x4F > > +#define IAR_FAD_THR 0x50 > > +#define IAR_ANT_AGC_CTRL 0x51 > > +#define IAR_AGC_THR1 0x52 > > +#define IAR_AGC_THR2 0x53 > > +#define IAR_AGC_HYS 0x54 > > +#define IAR_AFC 0x55 > > +/*------------------- 0x56 */ > > +/*------------------- 0x57 */ > > +#define IAR_PHY_STS 0x58 > > +#define IAR_RX_MAX_CORR 0x59 > > +#define IAR_RX_MAX_PREAMBLE 0x5A > > +#define IAR_RSSI 0x5B > > +/*------------------- 0x5C */ > > +/*------------------- 0x5D */ > > +#define IAR_PLL_DIG_CTRL 0x5E > > +#define IAR_VCO_CAL 0x5F > > +#define IAR_VCO_BEST_DIFF 0x60 > > +#define IAR_VCO_BIAS 0x61 > > +#define IAR_KMOD_CTRL 0x62 > > +#define IAR_KMOD_CAL 0x63 > > +#define IAR_PA_CAL 0x64 > > +#define IAR_PA_PWRCAL 0x65 > > +#define IAR_ATT_RSSI1 0x66 > > +#define IAR_ATT_RSSI2 0x67 > > +#define IAR_RSSI_OFFSET 0x68 > > +#define IAR_RSSI_SLOPE 0x69 > > +#define IAR_RSSI_CAL1 0x6A > > +#define IAR_RSSI_CAL2 0x6B > > +/*------------------- 0x6C */ > > +/*------------------- 0x6D */ > > +#define IAR_XTAL_CTRL 0x6E > > +#define IAR_XTAL_COMP_MIN 0x6F > > +#define IAR_XTAL_COMP_MAX 0x70 > > +#define IAR_XTAL_GM 0x71 > > +/*------------------- 0x72 */ > > +/*------------------- 0x73 */ > > +#define IAR_LNA_TUNE 0x74 > > +#define IAR_LNA_AGCGAIN 0x75 > > +/*------------------- 0x76 */ > > +/*------------------- 0x77 */ > > +#define IAR_CHF_PMA_GAIN 0x78 > > +#define IAR_CHF_IBUF 0x79 > > +#define IAR_CHF_QBUF 0x7A > > +#define IAR_CHF_IRIN 0x7B > > +#define IAR_CHF_QRIN 0x7C > > +#define IAR_CHF_IL 0x7D > > +#define IAR_CHF_QL 0x7E > > +#define IAR_CHF_CC1 0x7F > > +#define IAR_CHF_CCL 0x80 > > +#define IAR_CHF_CC2 0x81 > > +#define IAR_CHF_IROUT 0x82 > > +#define IAR_CHF_QROUT 0x83 > > +/*------------------- 0x84 */ > > +/*------------------- 0x85 */ > > +#define IAR_RSSI_CTRL 0x86 > > +/*------------------- 0x87 */ > > +/*------------------- 0x88 */ > > +#define IAR_PA_BIAS 0x89 > > +#define IAR_PA_TUNING 0x8A > > +/*------------------- 0x8B */ > > +/*------------------- 0x8C */ > > +#define IAR_PMC_HP_TRIM 0x8D > > +#define IAR_VREGA_TRIM 0x8E > > +/*------------------- 0x8F */ > > +/*------------------- 0x90 */ > > +#define IAR_VCO_CTRL1 0x91 > > +#define IAR_VCO_CTRL2 0x92 > > +/*------------------- 0x93 */ > > +/*------------------- 0x94 */ > > +#define IAR_ANA_SPARE_OUT1 0x95 > > +#define IAR_ANA_SPARE_OUT2 0x96 > > +#define IAR_ANA_SPARE_IN 0x97 > > +#define IAR_MISCELLANEOUS 0x98 > > +/*------------------- 0x99 */ > > +#define IAR_SEQ_MGR_OVRD0 0x9A > > +#define IAR_SEQ_MGR_OVRD1 0x9B > > +#define IAR_SEQ_MGR_OVRD2 0x9C > > +#define IAR_SEQ_MGR_OVRD3 0x9D > > +#define IAR_SEQ_MGR_OVRD4 0x9E > > +#define IAR_SEQ_MGR_OVRD5 0x9F > > +#define IAR_SEQ_MGR_OVRD6 0xA0 > > +#define IAR_SEQ_MGR_OVRD7 0xA1 > > +/*------------------- 0xA2 */ > > +#define IAR_TESTMODE_CTRL 0xA3 > > +#define IAR_DTM_CTRL1 0xA4 > > +#define IAR_DTM_CTRL2 0xA5 > > +#define IAR_ATM_CTRL1 0xA6 > > +#define IAR_ATM_CTRL2 0xA7 > > +#define IAR_ATM_CTRL3 0xA8 > > +/*------------------- 0xA9 */ > > +#define IAR_LIM_FE_TEST_CTRL 0xAA > > +#define IAR_CHF_TEST_CTRL 0xAB > > +#define IAR_VCO_TEST_CTRL 0xAC > > +#define IAR_PLL_TEST_CTRL 0xAD > > +#define IAR_PA_TEST_CTRL 0xAE > > +#define IAR_PMC_TEST_CTRL 0xAF > > +#define IAR_SCAN_DTM_PROTECT_1 0xFE > > +#define IAR_SCAN_DTM_PROTECT_0 0xFF > > + > > +/* IRQSTS1 bits */ > > +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) > > +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) > > +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) > > +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) > > +#define DAR_IRQSTS1_CCAIRQ BIT(3) > > +#define DAR_IRQSTS1_RXIRQ BIT(2) > > +#define DAR_IRQSTS1_TXIRQ BIT(1) > > +#define DAR_IRQSTS1_SEQIRQ BIT(0) > > + > > +/* IRQSTS2 bits */ > > +#define DAR_IRQSTS2_CRCVALID BIT(7) > > +#define DAR_IRQSTS2_CCA BIT(6) > > +#define DAR_IRQSTS2_SRCADDR BIT(5) > > +#define DAR_IRQSTS2_PI BIT(4) > > +#define DAR_IRQSTS2_TMRSTATUS BIT(3) > > +#define DAR_IRQSTS2_ASM_IRQ BIT(2) > > +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) > > +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) > > + > > +/* IRQSTS3 bits */ > > +#define DAR_IRQSTS3_TMR4MSK BIT(7) > > +#define DAR_IRQSTS3_TMR3MSK BIT(6) > > +#define DAR_IRQSTS3_TMR2MSK BIT(5) > > +#define DAR_IRQSTS3_TMR1MSK BIT(4) > > +#define DAR_IRQSTS3_TMR4IRQ BIT(3) > > +#define DAR_IRQSTS3_TMR3IRQ BIT(2) > > +#define DAR_IRQSTS3_TMR2IRQ BIT(1) > > +#define DAR_IRQSTS3_TMR1IRQ BIT(0) > > + > > +/* PHY_CTRL1 bits */ > > +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) > > +#define DAR_PHY_CTRL1_SLOTTED BIT(6) > > +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) > > +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 > > +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) > > +#define DAR_PHY_CTRL1_AUTOACK BIT(3) > > +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 > > + > > +/* PHY_CTRL2 bits */ > > +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) > > +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) > > +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) > > +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) > > +#define DAR_PHY_CTRL2_CCAMSK BIT(3) > > +#define DAR_PHY_CTRL2_RXMSK BIT(2) > > +#define DAR_PHY_CTRL2_TXMSK BIT(1) > > +#define DAR_PHY_CTRL2_SEQMSK BIT(0) > > + > > +/* PHY_CTRL3 bits */ > > +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) > > +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) > > +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) > > +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) > > +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) > > +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) > > +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) > > + > > +/* RX_FRM_LEN bits */ > > +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) > > + > > +/* PHY_CTRL4 bits */ > > +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) > > +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) > > +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) > > +#define DAR_PHY_CTRL4_CCATYPE (3) > > +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) > > +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) > > +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) > > +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) > > +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) > > + > > +/* SRC_CTRL bits */ > > +#define DAR_SRC_CTRL_INDEX (0x0F) > > +#define DAR_SRC_CTRL_INDEX_SHIFT (4) > > +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) > > +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) > > +#define DAR_SRC_CTRL_INDEX_EN BIT(1) > > +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) > > + > > +/* DAR_ASM_CTRL1 bits */ > > +#define DAR_ASM_CTRL1_CLEAR BIT(7) > > +#define DAR_ASM_CTRL1_START BIT(6) > > +#define DAR_ASM_CTRL1_SELFTST BIT(5) > > +#define DAR_ASM_CTRL1_CTR BIT(4) > > +#define DAR_ASM_CTRL1_CBC BIT(3) > > +#define DAR_ASM_CTRL1_AES BIT(2) > > +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) > > + > > +/* DAR_ASM_CTRL2 bits */ > > +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) > > +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) > > +#define DAR_ASM_CTRL2_TSTPAS BIT(1) > > + > > +/* DAR_CLK_OUT_CTRL bits */ > > +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) > > +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) > > +#define DAR_CLK_OUT_CTRL_SR BIT(5) > > +#define DAR_CLK_OUT_CTRL_DS BIT(4) > > +#define DAR_CLK_OUT_CTRL_EN BIT(3) > > +#define DAR_CLK_OUT_CTRL_DIV (7) > > + > > +/* DAR_PWR_MODES bits */ > > +#define DAR_PWR_MODES_XTAL_READY BIT(5) > > +#define DAR_PWR_MODES_XTALEN BIT(4) > > +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) > > +#define DAR_PWR_MODES_AUTODOZE BIT(1) > > +#define DAR_PWR_MODES_PMC_MODE BIT(0) > > + > > +/* RX_FRAME_FILTER bits */ > > +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) > > +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) > > +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) > > +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) > > +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) > > +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) > > +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) > > +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) > > + > > +/* DUAL_PAN_CTRL bits */ > > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) > > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) > > +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) > > +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) > > +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) > > +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) > > + > > +/* DUAL_PAN_STS bits */ > > +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) > > +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) > > +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) > > + > > +/* CCA_CTRL bits */ > > +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) > > +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) > > +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) > > +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) > > +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) > > +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) > > +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) > > + > > +/* ANT_PAD_CTRL bits */ > > +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) > > +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) > > +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) > > +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) > > +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) > > + > > +/* MISC_PAD_CTRL bits */ > > +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) > > +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) > > +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) > > +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) > > + > > +/* ANT_AGC_CTRL bits */ > > +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) > > +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) > > +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) > > +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) > > + > > +/* BSM_CTRL bits */ > > +#define BSM_CTRL_BSM_EN (1) > > + > > +/* SOFT_RESET bits */ > > +#define IAR_SOFT_RESET_SOG_RST BIT(7) > > +#define IAR_SOFT_RESET_REGS_RST BIT(4) > > +#define IAR_SOFT_RESET_PLL_RST BIT(3) > > +#define IAR_SOFT_RESET_TX_RST BIT(2) > > +#define IAR_SOFT_RESET_RX_RST BIT(1) > > +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) > > + > > +/* SEQ_MGR_CTRL bits */ > > +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) > > +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) > > +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) > > +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) > > +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) > > +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) > > +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) > > +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) > > + > > +/* SEQ_MGR_STS bits */ > > +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) > > +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) > > +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) > > +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) > > +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) > > +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) > > + > > +/* ABORT_STS bits */ > > +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) > > +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) > > +#define IAR_ABORT_STS_SW_ABORTED BIT(0) > > + > > +/* IAR_FILTERFAIL_CODE2 bits */ > > +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) > > +#define IAR_FILTERFAIL_CODE2_9_8 (3) > > + > > +/* PHY_STS bits */ > > +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) > > +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) > > +#define IAR_PHY_STS_PLL_LOCK BIT(5) > > +#define IAR_PHY_STS_CRCVALID BIT(3) > > +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) > > +#define IAR_PHY_STS_SFD_DET BIT(1) > > +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) > > + > > +/* TESTMODE_CTRL bits */ > > +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) > > +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) > > +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) > > +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) > > +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) > > + > > +/* DTM_CTRL1 bits */ > > +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) > > +#define IAR_DTM_CTRL1_DTM_EN BIT(6) > > +#define IAR_DTM_CTRL1_PAGE5 BIT(5) > > +#define IAR_DTM_CTRL1_PAGE4 BIT(4) > > +#define IAR_DTM_CTRL1_PAGE3 BIT(3) > > +#define IAR_DTM_CTRL1_PAGE2 BIT(2) > > +#define IAR_DTM_CTRL1_PAGE1 BIT(1) > > +#define IAR_DTM_CTRL1_PAGE0 BIT(0) > > + > > +/* TX_MODE_CTRL */ > > +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) > > +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) > > +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) > > +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) > > +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) > > + > > +#define TX_MODE_CTRL_DTS_MASK (7) > > + > > +#endif /* _MCR20A_H */ > > The rest looks fine. > > regards > Stefan Schmidt -- -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello, On 19 February 2018 at 18:29, Michael Richardson <mcr@sandelman.ca> wrote: > Xue Liu <liuxuenetmail@gmail.com> wrote: > > This driver implements a subset of ieee802154_ops. It has no support > > for CSMA due to lack of hardware support. It has currently no support > > for its proprietary feature: Dual PAN. > > I think you mean, that the driver has no support for the MCR20A Dual > Pan feature, because the 802.15.4 layer has no way to deal with it. > Correct. We have a discussion before. > A suggestion is to create two virtual devices! > OK. I will try to add it in the second release. > Does the MCR20A support any of the TSCH features? > > I believe there is no TSCH feartures in the hardware. > -- > ] Never tell me the odds! | ipv6 mesh networks [ > ] Michael Richardson, Sandelman Software Works | network architect [ > ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [ > -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello. On 02/19/2018 10:40 PM, Xue Liu wrote: > Hello Stefan, > > Thanks for the second review. > > On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: >> Hello. >> >> On Mon, 2018-02-19 at 11:51, Xue Liu wrote: >>> This is a driver for the NXP MCR20A 802.15.4 transceiver. >>> >>> The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. >> Please break the lines here around 72 chars so it can be sanely viewed >> in git log. >> > OK. >>> This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. >> >> Wow, I honetsly did not realise CSMA was not done in hardware on this chip. >> This can be a real problem in busy deplyoment scenarios. >> >> From the kernel stack perspective this make thes second timing critical item >> we migth need to have a softMAC solution for. first ACK handling and now CSMA. >> >> If anybody on this list has an interest in digging into the time constraints >> we have for this in 802.15.4 and find out if the current realtime infrastructure >> of the kernel offers us what we need for these constraints this would be very >> welcome! But I am drifting of the actual review of this driver. :-) >> >> > If I remember correctly. Many 802.15.4 chips except at86rf23x have no > full CSMA support. They have only CCA. > Is it possible to use hrtimer to control such time constrains ? That would be something to find out. I'm honestly not sure. Never really checked out what real time constraints are supported by now. >>> https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf >>> >>> Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> >>> --- >>> drivers/net/ieee802154/Kconfig | 11 + >>> drivers/net/ieee802154/Makefile | 1 + >>> drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ >>> drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ >>> 4 files changed, 1970 insertions(+) >>> create mode 100644 drivers/net/ieee802154/mcr20a.c >>> create mode 100644 drivers/net/ieee802154/mcr20a.h >>> >>> diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig >>> index 303ba41..8782f56 100644 >>> --- a/drivers/net/ieee802154/Kconfig >>> +++ b/drivers/net/ieee802154/Kconfig >>> @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS >>> exposes a debugfs node for each CA8210 instance which allows >>> direct use of the Cascoda API, exposing the 802.15.4 MAC >>> management entities. >>> + >>> +config IEEE802154_MCR20A >>> + tristate "MCR20A transceiver driver" >>> + depends on IEEE802154_DRIVERS && MAC802154 >>> + depends on SPI >>> + ---help--- >>> + Say Y here to enable the MCR20A SPI 802.15.4 wireless >>> + controller. >>> + >>> + This driver can also be built as a module. To do so, say M here. >>> + the module will be called 'mcr20a'. >>> diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile >>> index bea1de5..104744d 100644 >>> --- a/drivers/net/ieee802154/Makefile >>> +++ b/drivers/net/ieee802154/Makefile >>> @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o >>> obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o >>> obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o >>> obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o >>> +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o >>> diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c >>> new file mode 100644 >>> index 0000000..90712e9 >>> --- /dev/null >>> +++ b/drivers/net/ieee802154/mcr20a.c >>> @@ -0,0 +1,1460 @@ >>> +/* >>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>> + * >>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>> + * >>> + * This program is free software; you can redistribute it and/or modify >>> + * it under the terms of the GNU General Public License version 2 >>> + * as published by the Free Software Foundation. >>> + * >>> + * This program is distributed in the hope that it will be useful, >>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>> + * GNU General Public License for more details. >>> + * >>> + */ >>> +#include <linux/kernel.h> >>> +#include <linux/module.h> >>> +#include <linux/gpio.h> >>> +#include <linux/spi/spi.h> >>> +#include <linux/workqueue.h> >>> +#include <linux/interrupt.h> >>> +#include <linux/skbuff.h> >>> +#include <linux/of_gpio.h> >>> +#include <linux/regmap.h> >>> +#include <linux/ieee802154.h> >>> +#include <linux/debugfs.h> >>> + >>> +#include <net/mac802154.h> >>> +#include <net/cfg802154.h> >>> + >>> +#include <linux/device.h> >>> + >>> +#include "mcr20a.h" >>> + >>> +#define SPI_COMMAND_BUFFER 3 >>> + >>> +#define REGISTER_READ BIT(7) >>> +#define REGISTER_WRITE (0 << 7) >>> +#define REGISTER_ACCESS (0 << 6) >>> +#define PACKET_BUFF_BURST_ACCESS BIT(6) >>> +#define PACKET_BUFF_BYTE_ACCESS BIT(5) >>> + >>> +#define MCR20A_WRITE_REG(x) (x) >>> +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) >>> +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) >>> +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) >>> + >>> +#define MCR20A_CMD_REG 0x80 >>> +#define MCR20A_CMD_REG_MASK 0x3f >>> +#define MCR20A_CMD_WRITE 0x40 >>> +#define MCR20A_CMD_FB 0x20 >> Some of these indents look wrong in my mailer. Did you run this patch through >> the checkpatch script? >> > Yes. 0 erros and 0 warnings. But I will check it again. Fair enough. Maybe my mailer was just off in that case. I will run in through checkpatch anyway before I apply it to my tree. >>> +/* Number of Interrupt Request Status Register */ >>> +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ >>> + >>> +/* MCR20A CCA Type */ >>> +enum { >>> + MCR20A_CCA_ED, // energy detect - CCA bit not active, >>> + // not to be used for T and CCCA sequences >>> + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE >>> + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE >>> + MCR20A_CCA_MODE3 >>> +}; >>> + >>> +enum { >>> + MCR20A_XCVSEQ_IDLE = 0x00, >>> + MCR20A_XCVSEQ_RX = 0x01, >>> + MCR20A_XCVSEQ_TX = 0x02, >>> + MCR20A_XCVSEQ_CCA = 0x03, >>> + MCR20A_XCVSEQ_TR = 0x04, >>> + MCR20A_XCVSEQ_CCCA = 0x05, >>> +}; >>> + >>> +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ >>> +#define MCR20A_MIN_CHANNEL (11) >>> +#define MCR20A_MAX_CHANNEL (26) >>> +#define MCR20A_CHANNEL_SPACING (5) >>> + >>> +/* MCR20A CCA Threshold constans */ >>> +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) >>> +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) >>> + >>> +/* version 0C */ >>> +#define MCR20A_OVERWRITE_VERSION (0x0C) >>> + >>> +/* MCR20A PLL configurations */ >>> +static const u8 PLL_INT[16] = { >>> + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, >>> + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, >>> + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, >>> + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, >>> + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, >>> + /* 2480 */ 0x0D >>> +}; >>> + >>> +static const u8 PLL_FRAC[16] = { >>> + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, >>> + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, >>> + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, >>> + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, >>> + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, >>> + /* 2480 */ 0x80 >>> +}; >>> + >>> +static const struct reg_sequence mar20a_iar_overwrites[] = { >>> + { IAR_MISC_PAD_CTRL, 0x02 }, >>> + { IAR_VCO_CTRL1, 0xB3 }, >>> + { IAR_VCO_CTRL2, 0x07 }, >>> + { IAR_PA_TUNING, 0x71 }, >>> + { IAR_CHF_IBUF, 0x2F }, >>> + { IAR_CHF_QBUF, 0x2F }, >>> + { IAR_CHF_IRIN, 0x24 }, >>> + { IAR_CHF_QRIN, 0x24 }, >>> + { IAR_CHF_IL, 0x24 }, >>> + { IAR_CHF_QL, 0x24 }, >>> + { IAR_CHF_CC1, 0x32 }, >>> + { IAR_CHF_CCL, 0x1D }, >>> + { IAR_CHF_CC2, 0x2D }, >>> + { IAR_CHF_IROUT, 0x24 }, >>> + { IAR_CHF_QROUT, 0x24 }, >>> + { IAR_PA_CAL, 0x28 }, >>> + { IAR_AGC_THR1, 0x55 }, >>> + { IAR_AGC_THR2, 0x2D }, >>> + { IAR_ATT_RSSI1, 0x5F }, >>> + { IAR_ATT_RSSI2, 0x8F }, >>> + { IAR_RSSI_OFFSET, 0x61 }, >>> + { IAR_CHF_PMA_GAIN, 0x03 }, >>> + { IAR_CCA1_THRESH, 0x50 }, >>> + { IAR_CORR_NVAL, 0x13 }, >>> + { IAR_ACKDELAY, 0x3D }, >>> +}; >>> + >>> +#define MCR20A_VALID_CHANNELS (0x07FFF800) >>> + >>> +struct mcr20a_platform_data { >>> + int rst_gpio; >>> +}; >>> + >>> +#define MCR20A_MAX_BUF (127) >>> + >>> +#define printdev(X) (&X->spi->dev) >>> + >>> +/* regmap information for Direct Access Register (DAR) access */ >>> +#define MCR20A_DAR_WRITE 0x01 >>> +#define MCR20A_DAR_READ 0x00 >>> +#define MCR20A_DAR_NUMREGS 0x3F >>> + >>> +/* regmap information for Indirect Access Register (IAR) access */ >>> +#define MCR20A_IAR_ACCESS 0x80 >>> +#define MCR20A_IAR_NUMREGS 0xBEFF >>> + >>> +/* Read/Write SPI Commands for DAR and IAR registers. */ >>> +#define MCR20A_READSHORT(reg) ((reg) << 1) >>> +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) >>> +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) >>> +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) >>> + >>> +/* Type definitions for link configuration of instantiable layers */ >>> +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) >>> + >>> +static bool >>> +mcr20a_dar_writeable(struct device *dev, unsigned int reg) >>> +{ >>> + switch (reg) { >>> + case DAR_IRQ_STS1: >>> + case DAR_IRQ_STS2: >>> + case DAR_IRQ_STS3: >>> + case DAR_PHY_CTRL1: >>> + case DAR_PHY_CTRL2: >>> + case DAR_PHY_CTRL3: >>> + case DAR_PHY_CTRL4: >>> + case DAR_SRC_CTRL: >>> + case DAR_SRC_ADDRS_SUM_LSB: >>> + case DAR_SRC_ADDRS_SUM_MSB: >>> + case DAR_T3CMP_LSB: >>> + case DAR_T3CMP_MSB: >>> + case DAR_T3CMP_USB: >>> + case DAR_T2PRIMECMP_LSB: >>> + case DAR_T2PRIMECMP_MSB: >>> + case DAR_T1CMP_LSB: >>> + case DAR_T1CMP_MSB: >>> + case DAR_T1CMP_USB: >>> + case DAR_T2CMP_LSB: >>> + case DAR_T2CMP_MSB: >>> + case DAR_T2CMP_USB: >>> + case DAR_T4CMP_LSB: >>> + case DAR_T4CMP_MSB: >>> + case DAR_T4CMP_USB: >>> + case DAR_PLL_INT0: >>> + case DAR_PLL_FRAC0_LSB: >>> + case DAR_PLL_FRAC0_MSB: >>> + case DAR_PA_PWR: >>> + /* no DAR_ACM */ >>> + case DAR_OVERWRITE_VER: >>> + case DAR_CLK_OUT_CTRL: >>> + case DAR_PWR_MODES: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static bool >>> +mcr20a_dar_readable(struct device *dev, unsigned int reg) >>> +{ >>> + bool rc; >>> + >>> + /* all writeable are also readable */ >>> + rc = mcr20a_dar_writeable(dev, reg); >>> + if (rc) >>> + return rc; >>> + >>> + /* readonly regs */ >>> + switch (reg) { >>> + case DAR_RX_FRM_LEN: >>> + case DAR_CCA1_ED_FNL: >>> + case DAR_EVENT_TMR_LSB: >>> + case DAR_EVENT_TMR_MSB: >>> + case DAR_EVENT_TMR_USB: >>> + case DAR_TIMESTAMP_LSB: >>> + case DAR_TIMESTAMP_MSB: >>> + case DAR_TIMESTAMP_USB: >>> + case DAR_SEQ_STATE: >>> + case DAR_LQI_VALUE: >>> + case DAR_RSSI_CCA_CONT: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static bool >>> +mcr20a_dar_volatile(struct device *dev, unsigned int reg) >>> +{ >>> + /* can be changed during runtime */ >>> + switch (reg) { >>> + case DAR_IRQ_STS1: >>> + case DAR_IRQ_STS2: >>> + case DAR_IRQ_STS3: >>> + /* use them in spi_async and regmap so it's volatile */ >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static bool >>> +mcr20a_dar_precious(struct device *dev, unsigned int reg) >>> +{ >>> + /* don't clear irq line on read */ >>> + switch (reg) { >>> + case DAR_IRQ_STS1: >>> + case DAR_IRQ_STS2: >>> + case DAR_IRQ_STS3: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static const struct regmap_config mcr20a_dar_regmap = { >>> + .name = "mcr20a_dar", >>> + .reg_bits = 8, >>> + .val_bits = 8, >>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, >>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, >>> + .cache_type = REGCACHE_RBTREE, >>> + .writeable_reg = mcr20a_dar_writeable, >>> + .readable_reg = mcr20a_dar_readable, >>> + .volatile_reg = mcr20a_dar_volatile, >>> + .precious_reg = mcr20a_dar_precious, >>> + .fast_io = true, >>> + .can_multi_write = true, >>> +}; >>> + >>> +static bool >>> +mcr20a_iar_writeable(struct device *dev, unsigned int reg) >>> +{ >>> + switch (reg) { >>> + case IAR_XTAL_TRIM: >>> + case IAR_PMC_LP_TRIM: >>> + case IAR_MACPANID0_LSB: >>> + case IAR_MACPANID0_MSB: >>> + case IAR_MACSHORTADDRS0_LSB: >>> + case IAR_MACSHORTADDRS0_MSB: >>> + case IAR_MACLONGADDRS0_0: >>> + case IAR_MACLONGADDRS0_8: >>> + case IAR_MACLONGADDRS0_16: >>> + case IAR_MACLONGADDRS0_24: >>> + case IAR_MACLONGADDRS0_32: >>> + case IAR_MACLONGADDRS0_40: >>> + case IAR_MACLONGADDRS0_48: >>> + case IAR_MACLONGADDRS0_56: >>> + case IAR_RX_FRAME_FILTER: >>> + case IAR_PLL_INT1: >>> + case IAR_PLL_FRAC1_LSB: >>> + case IAR_PLL_FRAC1_MSB: >>> + case IAR_MACPANID1_LSB: >>> + case IAR_MACPANID1_MSB: >>> + case IAR_MACSHORTADDRS1_LSB: >>> + case IAR_MACSHORTADDRS1_MSB: >>> + case IAR_MACLONGADDRS1_0: >>> + case IAR_MACLONGADDRS1_8: >>> + case IAR_MACLONGADDRS1_16: >>> + case IAR_MACLONGADDRS1_24: >>> + case IAR_MACLONGADDRS1_32: >>> + case IAR_MACLONGADDRS1_40: >>> + case IAR_MACLONGADDRS1_48: >>> + case IAR_MACLONGADDRS1_56: >>> + case IAR_DUAL_PAN_CTRL: >>> + case IAR_DUAL_PAN_DWELL: >>> + case IAR_CCA1_THRESH: >>> + case IAR_CCA1_ED_OFFSET_COMP: >>> + case IAR_LQI_OFFSET_COMP: >>> + case IAR_CCA_CTRL: >>> + case IAR_CCA2_CORR_PEAKS: >>> + case IAR_CCA2_CORR_THRESH: >>> + case IAR_TMR_PRESCALE: >>> + case IAR_ANT_PAD_CTRL: >>> + case IAR_MISC_PAD_CTRL: >>> + case IAR_BSM_CTRL: >>> + case IAR_RNG: >>> + case IAR_RX_WTR_MARK: >>> + case IAR_SOFT_RESET: >>> + case IAR_TXDELAY: >>> + case IAR_ACKDELAY: >>> + case IAR_CORR_NVAL: >>> + case IAR_ANT_AGC_CTRL: >>> + case IAR_AGC_THR1: >>> + case IAR_AGC_THR2: >>> + case IAR_PA_CAL: >>> + case IAR_ATT_RSSI1: >>> + case IAR_ATT_RSSI2: >>> + case IAR_RSSI_OFFSET: >>> + case IAR_XTAL_CTRL: >>> + case IAR_CHF_PMA_GAIN: >>> + case IAR_CHF_IBUF: >>> + case IAR_CHF_QBUF: >>> + case IAR_CHF_IRIN: >>> + case IAR_CHF_QRIN: >>> + case IAR_CHF_IL: >>> + case IAR_CHF_QL: >>> + case IAR_CHF_CC1: >>> + case IAR_CHF_CCL: >>> + case IAR_CHF_CC2: >>> + case IAR_CHF_IROUT: >>> + case IAR_CHF_QROUT: >>> + case IAR_PA_TUNING: >>> + case IAR_VCO_CTRL1: >>> + case IAR_VCO_CTRL2: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static bool >>> +mcr20a_iar_readable(struct device *dev, unsigned int reg) >>> +{ >>> + bool rc; >>> + >>> + /* all writeable are also readable */ >>> + rc = mcr20a_iar_writeable(dev, reg); >>> + if (rc) >>> + return rc; >>> + >>> + /* readonly regs */ >>> + switch (reg) { >>> + case IAR_PART_ID: >>> + case IAR_DUAL_PAN_STS: >>> + case IAR_RX_BYTE_COUNT: >>> + case IAR_FILTERFAIL_CODE1: >>> + case IAR_FILTERFAIL_CODE2: >>> + case IAR_RSSI: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static bool >>> +mcr20a_iar_volatile(struct device *dev, unsigned int reg) >>> +{ >>> +/* can be changed during runtime */ >>> + switch (reg) { >>> + case IAR_DUAL_PAN_STS: >>> + case IAR_RX_BYTE_COUNT: >>> + case IAR_FILTERFAIL_CODE1: >>> + case IAR_FILTERFAIL_CODE2: >>> + case IAR_RSSI: >>> + return true; >>> + default: >>> + return false; >>> + } >>> +} >>> + >>> +static const struct regmap_config mcr20a_iar_regmap = { >>> + .name = "mcr20a_iar", >>> + .reg_bits = 16, >>> + .val_bits = 8, >>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, >>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, >>> + .cache_type = REGCACHE_RBTREE, >>> + .writeable_reg = mcr20a_iar_writeable, >>> + .readable_reg = mcr20a_iar_readable, >>> + .volatile_reg = mcr20a_iar_volatile, >>> + .fast_io = true, >>> +}; >>> + >>> +struct mcr20a_local { >>> + struct spi_device *spi; >>> + >>> + struct ieee802154_hw *hw; >>> + struct mcr20a_platform_data *pdata; >>> + struct regmap *regmap_dar; >>> + struct regmap *regmap_iar; >>> + >>> + u8 *buf; >>> + >>> + bool is_tx; >>> + >>> + /* for writing tx buffer */ >>> + struct spi_message tx_buf_msg; >>> + u8 tx_header[1]; >>> + /* burst buffer write command */ >>> + struct spi_transfer tx_xfer_header; >>> + u8 tx_len[1]; >>> + /* len of tx packet */ >>> + struct spi_transfer tx_xfer_len; >>> + /* data of tx packet */ >>> + struct spi_transfer tx_xfer_buf; >>> + struct sk_buff *tx_skb; >>> + >>> + /* for read length rxfifo */ >>> + struct spi_message reg_msg; >>> + u8 reg_cmd[1]; >>> + u8 reg_data[MCR20A_IRQSTS_NUM]; >>> + struct spi_transfer reg_xfer_cmd; >>> + struct spi_transfer reg_xfer_data; >>> + >>> + /* receive handling */ >>> + struct spi_message rx_buf_msg; >>> + u8 rx_header[1]; >>> + struct spi_transfer rx_xfer_header; >>> + u8 rx_lqi[1]; >>> + struct spi_transfer rx_xfer_lqi; >>> + u8 rx_buf[MCR20A_MAX_BUF]; >>> + struct spi_transfer rx_xfer_buf; >>> + >>> + /* isr handling for reading intstat */ >>> + struct spi_message irq_msg; >>> + u8 irq_header[1]; >>> + u8 irq_data[MCR20A_IRQSTS_NUM]; >>> + struct spi_transfer irq_xfer_data; >>> + struct spi_transfer irq_xfer_header; >>> +}; >>> + >>> +static void >>> +mcr20a_write_tx_buf_complete(void *context) >>> +{ >>> + struct mcr20a_local *lp = context; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + lp->reg_msg.complete = NULL; >>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>> + lp->reg_data[0] = MCR20A_XCVSEQ_TX; >>> + lp->reg_xfer_data.len = 1; >>> + >>> + ret = spi_async(lp->spi, &lp->reg_msg); >>> + if (ret) >>> + dev_err(printdev(lp), "failed to set SEQ TX\n"); >>> +} >>> + >>> +static int >>> +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + lp->tx_skb = skb; >>> + >>> +#ifdef DEBUG >>> + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, >>> + skb->data, skb->len, 0); >>> +#endif >>> + >>> + lp->is_tx = 1; >>> + >>> + lp->reg_msg.complete = NULL; >>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>> + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; >>> + lp->reg_xfer_data.len = 1; >>> + >>> + return spi_async(lp->spi, &lp->reg_msg); >>> +} >>> + >>> +static int >>> +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + unsigned int val = 0; >>> + u8 energy_level; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); >>> + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { >>> + /* Change CCA Type to 00 - Energy Detect */ >>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); >>> + /* Perform ED */ >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>> + MCR20A_XCVSEQ_CCA); >>> + val = 0; >>> + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) >>> + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); >>> + /* the energy level scaled in 0x00 - 0xFF */ >>> + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); >>> + energy_level = (u8)val; >>> + >>> + if (energy_level >= 90) { >>> + /* ED value is below minimum. Return 0x00. */ >>> + energy_level = 0x00; >>> + } else if (energy_level <= 26) { >>> + /* ED value is above maximum. Return 0xFF. */ >>> + energy_level = 0xFF; >>> + } else { >>> + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ >>> + energy_level = (90 - energy_level); >>> + energy_level <<= 2; >>> + } >>> + >>> + *level = energy_level; >>> + } else { >>> + /* switch to IDLE at first */ >>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>> + MCR20A_XCVSEQ_IDLE); >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static int >>> +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); >> Nitpick. Typo in channel here. Might as well use __func__ :) >> > Correct. Are you going to sent a new version with this one fixed? >>> + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ >>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); >>> + if (ret) >>> + return ret; >>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); >>> + if (ret) >>> + return ret; >>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, >>> + PLL_FRAC[channel - 11]); >>> + if (ret) >>> + return ret; >>> + >>> + return 0; >>> +} >>> + >>> +static int >>> +mcr20a_start(struct ieee802154_hw *hw) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* No slotted operation */ >>> + dev_dbg(printdev(lp), "no slotted operation\n"); >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_SLOTTED, 0x0); >>> + >>> + /* enable irq */ >>> + enable_irq(lp->spi->irq); >>> + >>> + /* Unmask SEQ interrupt */ >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, >>> + DAR_PHY_CTRL2_SEQMSK, 0x0); >>> + >>> + /* Start the RX sequence */ >>> + dev_dbg(printdev(lp), "start the RX sequence\n"); >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>> + >>> + return 0; >>> +} >>> + >>> +static void >>> +mcr20a_stop(struct ieee802154_hw *hw) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* stop all running sequence */ >>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>> + >>> + /* disable irq */ >>> + disable_irq(lp->spi->irq); >>> +} >>> + >>> +static int >>> +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, >>> + struct ieee802154_hw_addr_filt *filt, >>> + unsigned long changed) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { >>> + u16 addr = le16_to_cpu(filt->short_addr); >>> + >>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); >>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); >>> + } >>> + >>> + if (changed & IEEE802154_AFILT_PANID_CHANGED) { >>> + u16 pan = le16_to_cpu(filt->pan_id); >>> + >>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); >>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); >>> + } >>> + >>> + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { >>> + u8 addr[8], i; >>> + >>> + memcpy(addr, &filt->ieee_addr, 8); >>> + for (i = 0; i < 8; i++) >>> + regmap_write(lp->regmap_iar, >>> + IAR_MACLONGADDRS0_0 + i, addr[i]); >>> + } >>> + >>> + if (changed & IEEE802154_AFILT_PANC_CHANGED) { >>> + if (filt->pan_coord) { >>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); >>> + } else { >>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); >>> + } >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +/* -30 dBm to 10 dBm */ >>> +#define MCR20A_MAX_TX_POWERS 0x14 >>> +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { >>> + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, >>> + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 >>> +}; >>> + >>> +static int >>> +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + u32 i; >>> + >>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); >>> + >>> + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { >>> + if (lp->hw->phy->supported.tx_powers[i] == mbm) >>> + return regmap_write(lp->regmap_dar, DAR_PA_PWR, >>> + ((i + 8) & 0x1F)); >>> + } >>> + >>> + return -EINVAL; >>> +} >>> + >>> +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD >>> +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; >>> + >>> +static int >>> +mcr20a_set_cca_mode(struct ieee802154_hw *hw, >>> + const struct wpan_phy_cca *cca) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + unsigned int cca_mode = 0xff; >>> + bool cca_mode_and = false; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* mapping 802.15.4 to driver spec */ >>> + switch (cca->mode) { >>> + case NL802154_CCA_ENERGY: >>> + cca_mode = MCR20A_CCA_MODE1; >>> + break; >>> + case NL802154_CCA_CARRIER: >>> + cca_mode = MCR20A_CCA_MODE2; >>> + break; >>> + case NL802154_CCA_ENERGY_CARRIER: >>> + switch (cca->opt) { >>> + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: >>> + cca_mode = MCR20A_CCA_MODE3; >>> + cca_mode_and = true; >>> + break; >>> + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: >>> + cca_mode = MCR20A_CCA_MODE3; >>> + cca_mode_and = false; >>> + break; >>> + default: >>> + return -EINVAL; >>> + } >>> + break; >>> + default: >>> + return -EINVAL; >>> + } >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>> + DAR_PHY_CTRL4_CCATYPE_MASK, >>> + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); >>> + if (ret < 0) >>> + return ret; >>> + >>> + if (cca_mode == MCR20A_CCA_MODE3) { >>> + if (cca_mode_and) { >>> + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, >>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>> + 0x08); >>> + } else { >>> + ret = regmap_update_bits(lp->regmap_iar, >>> + IAR_CCA_CTRL, >>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>> + 0x00); >>> + } >>> + if (ret < 0) >>> + return ret; >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +static int >>> +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + u32 i; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { >>> + if (hw->phy->supported.cca_ed_levels[i] == mbm) >>> + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static int >>> +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) >>> +{ >>> + struct mcr20a_local *lp = hw->priv; >>> + int ret; >>> + u8 rx_frame_filter_reg = 0x0; >>> + u8 val; >>> + >>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); >>> + >>> + if (on) { >>> + /* All frame types accepted*/ >>> + val |= DAR_PHY_CTRL4_PROMISCUOUS; >>> + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); >>> + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | >>> + IAR_RX_FRAME_FLT_NS_FT); >>> + >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>> + DAR_PHY_CTRL4_PROMISCUOUS, >>> + DAR_PHY_CTRL4_PROMISCUOUS); >>> + if (ret < 0) >>> + return ret; >>> + >>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>> + rx_frame_filter_reg); >>> + if (ret < 0) >>> + return ret; >>> + } else { >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>> + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); >>> + if (ret < 0) >>> + return ret; >>> + >>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>> + IAR_RX_FRAME_FLT_FRM_VER | >>> + IAR_RX_FRAME_FLT_BEACON_FT | >>> + IAR_RX_FRAME_FLT_DATA_FT | >>> + IAR_RX_FRAME_FLT_CMD_FT); >>> + if (ret < 0) >>> + return ret; >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static const struct ieee802154_ops mcr20a_hw_ops = { >>> + .owner = THIS_MODULE, >>> + .xmit_async = mcr20a_xmit, >>> + .ed = mcr20a_ed, >>> + .set_channel = mcr20a_set_channel, >>> + .start = mcr20a_start, >>> + .stop = mcr20a_stop, >>> + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, >>> + .set_txpower = mcr20a_set_txpower, >>> + .set_cca_mode = mcr20a_set_cca_mode, >>> + .set_cca_ed_level = mcr20a_set_cca_ed_level, >>> + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, >>> +}; >>> + >>> +static int >>> +mcr20a_request_rx(struct mcr20a_local *lp) >>> +{ >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* Start the RX sequence */ >>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>> + >>> + return 0; >>> +} >>> + >>> +static void >>> +mcr20a_handle_rx_read_buf_complete(void *context) >>> +{ >>> + struct mcr20a_local *lp = context; >>> + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>> + struct sk_buff *skb; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + dev_dbg(printdev(lp), "RX is done\n"); >>> + >>> + if (!ieee802154_is_valid_psdu_len(len)) { >>> + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); >>> + len = IEEE802154_MTU; >>> + } >>> + >>> + len = len - 2; /* get rid of frame check field */ >>> + >>> + skb = dev_alloc_skb(len); >>> + if (!skb) >>> + return; >>> + >>> + memcpy(skb_put(skb, len), lp->rx_buf, len); >>> + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); >>> + >>> +#ifdef DEBUG >>> + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, >>> + lp->rx_buf, len, 0); >>> + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); >>> +#endif >> Here, as well as in the corresponding TX hex_dump call I wonder how to better >> make use of it. Recompiling the driver to get the dump is not really nice. >> Having a way to have this enabled during runtime might be better. And across >> all drivers. Just thinking out loud here. Not saying you need to be he one >> implementing it. What do you think? >> >> > using module parameters may a solution. This would be an option but I was thinking more about towards a tracepoints like approach where we can dynamically enable or disable the hexdump or other debug functionality. Loading and unloading the module to change this is a bit cumbersome. This code might not even be a module at all but compiled in. I need to check what the kernel infra offers here and how other subsystems use it. >>> + /* start RX sequence */ >>> + mcr20a_request_rx(lp); >>> +} >>> + >>> +static void >>> +mcr20a_handle_rx_read_len_complete(void *context) >>> +{ >>> + struct mcr20a_local *lp = context; >>> + u8 len; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* get the length of received frame */ >>> + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>> + dev_dbg(printdev(lp), "frame len : %d\n", len); >>> + >>> + /* prepare to read the rx buf */ >>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>> + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; >>> + lp->rx_xfer_buf.len = len; >>> + >>> + ret = spi_async(lp->spi, &lp->rx_buf_msg); >>> + if (ret) >>> + dev_err(printdev(lp), "failed to read rx buffer length\n"); >>> +} >>> + >>> +static int >>> +mcr20a_handle_rx(struct mcr20a_local *lp) >>> +{ >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; >>> + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); >>> + lp->reg_xfer_data.len = 1; >>> + >>> + return spi_async(lp->spi, &lp->reg_msg); >>> +} >>> + >>> +static int >>> +mcr20a_handle_tx_complete(struct mcr20a_local *lp) >>> +{ >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); >>> + >>> + return mcr20a_request_rx(lp); >>> +} >>> + >>> +static int >>> +mcr20a_handle_tx(struct mcr20a_local *lp) >>> +{ >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* write tx buffer */ >>> + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; >>> + /* add 2 bytes of FCS */ >>> + lp->tx_len[0] = lp->tx_skb->len + 2; >>> + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; >>> + /* add 1 byte psduLength */ >>> + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; >>> + >>> + ret = spi_async(lp->spi, &lp->tx_buf_msg); >>> + if (ret) { >>> + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); >>> + return ret; >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static void >>> +mcr20a_irq_clean_complete(void *context) >>> +{ >>> + struct mcr20a_local *lp = context; >>> + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + enable_irq(lp->spi->irq); >>> + >>> + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", >>> + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); >>> + >>> + switch (seq_state) { >>> + /* TX IRQ, RX IRQ and SEQ IRQ */ >>> + case (0x03): >>> + if (lp->is_tx) { >>> + lp->is_tx = 0; >>> + dev_dbg(printdev(lp), "TX is done. No ACK\n"); >>> + mcr20a_handle_tx_complete(lp); >>> + } >>> + break; >>> + case (0x05): >>> + /* rx is starting */ >>> + dev_dbg(printdev(lp), "RX is starting\n"); >>> + mcr20a_handle_rx(lp); >>> + break; >>> + case (0x07): >>> + if (lp->is_tx) { >>> + /* tx is done */ >>> + lp->is_tx = 0; >>> + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); >>> + mcr20a_handle_tx_complete(lp); >>> + } else { >>> + /* rx is starting */ >>> + dev_dbg(printdev(lp), "RX is starting\n"); >>> + mcr20a_handle_rx(lp); >>> + } >>> + break; >>> + case (0x01): >>> + if (lp->is_tx) { >>> + dev_dbg(printdev(lp), "TX is starting\n"); >>> + mcr20a_handle_tx(lp); >>> + } else { >>> + dev_dbg(printdev(lp), "MCR20A is stop\n"); >>> + } >>> + break; >>> + } >>> +} >>> + >>> +static void mcr20a_irq_status_complete(void *context) >>> +{ >>> + int ret; >>> + struct mcr20a_local *lp = context; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>> + >>> + lp->reg_msg.complete = mcr20a_irq_clean_complete; >>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); >>> + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); >>> + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; >>> + >>> + ret = spi_async(lp->spi, &lp->reg_msg); >>> + >>> + if (ret) >>> + dev_err(printdev(lp), "failed to clean irq status\n"); >>> +} >>> + >>> +static irqreturn_t mcr20a_irq_isr(int irq, void *data) >>> +{ >>> + struct mcr20a_local *lp = data; >>> + int ret; >>> + >>> + disable_irq_nosync(irq); >>> + >>> + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); >>> + /* read IRQSTSx */ >>> + ret = spi_async(lp->spi, &lp->irq_msg); >>> + if (ret) { >>> + enable_irq(irq); >>> + return IRQ_NONE; >>> + } >>> + >>> + return IRQ_HANDLED; >>> +} >>> + >>> +static int mcr20a_get_platform_data(struct spi_device *spi, >>> + struct mcr20a_platform_data *pdata) >>> +{ >>> + int ret = 0; >>> + >>> + if (!spi->dev.of_node) >>> + return -EINVAL; >>> + >>> + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); >>> + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); >>> + >>> + return ret; >>> +} >>> + >>> +static void mcr20a_hw_setup(struct mcr20a_local *lp) >>> +{ >>> + u8 i; >>> + struct ieee802154_hw *hw = lp->hw; >>> + struct wpan_phy *phy = lp->hw->phy; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + phy->symbol_duration = 16; >>> + phy->lifs_period = 40; >>> + phy->sifs_period = 12; >>> + >>> + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | >>> + IEEE802154_HW_AFILT | >>> + IEEE802154_HW_PROMISCUOUS; >>> + >>> + phy->flags = WPAN_PHY_FLAG_TXPOWER | >>> + WPAN_PHY_FLAG_CCA_ED_LEVEL | >>> + WPAN_PHY_FLAG_CCA_MODE; >>> + >>> + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | >>> + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); >>> + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | >>> + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); >>> + >>> + /* initiating cca_ed_levels */ >>> + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; >>> + ++i) { >>> + mcr20a_ed_levels[i] = -i * 100; >>> + } >>> + >>> + phy->supported.cca_ed_levels = mcr20a_ed_levels; >>> + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); >>> + >>> + phy->cca.mode = NL802154_CCA_ENERGY; >>> + >>> + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; >>> + phy->current_page = 0; >>> + /* MCR20A default reset value */ >>> + phy->current_channel = 20; >>> + phy->symbol_duration = 16; >>> + phy->supported.tx_powers = mcr20a_powers; >>> + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); >>> + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; >>> + phy->transmit_power = phy->supported.tx_powers[0x0F]; >>> +} >>> + >>> +static void >>> +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) >>> +{ >>> + spi_message_init(&lp->tx_buf_msg); >>> + lp->tx_buf_msg.context = lp; >>> + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; >>> + >>> + lp->tx_xfer_header.len = 1; >>> + lp->tx_xfer_header.tx_buf = lp->tx_header; >>> + >>> + lp->tx_xfer_len.len = 1; >>> + lp->tx_xfer_len.tx_buf = lp->tx_len; >>> + >>> + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); >>> + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); >>> + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); >>> +} >>> + >>> +static void >>> +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) >>> +{ >>> + spi_message_init(&lp->reg_msg); >>> + lp->reg_msg.context = lp; >>> + >>> + lp->reg_xfer_cmd.len = 1; >>> + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; >>> + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; >>> + >>> + lp->reg_xfer_data.rx_buf = lp->reg_data; >>> + lp->reg_xfer_data.tx_buf = lp->reg_data; >>> + >>> + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); >>> + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); >>> + >>> + spi_message_init(&lp->rx_buf_msg); >>> + lp->rx_buf_msg.context = lp; >>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>> + lp->rx_xfer_header.len = 1; >>> + lp->rx_xfer_header.tx_buf = lp->rx_header; >>> + lp->rx_xfer_header.rx_buf = lp->rx_header; >>> + >>> + lp->rx_xfer_buf.rx_buf = lp->rx_buf; >>> + >>> + lp->rx_xfer_lqi.len = 1; >>> + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; >>> + >>> + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); >>> + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); >>> + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); >>> +} >>> + >>> +static void >>> +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) >>> +{ >>> + spi_message_init(&lp->irq_msg); >>> + lp->irq_msg.context = lp; >>> + lp->irq_msg.complete = mcr20a_irq_status_complete; >>> + lp->irq_xfer_header.len = 1; >>> + lp->irq_xfer_header.tx_buf = lp->irq_header; >>> + lp->irq_xfer_header.rx_buf = lp->irq_header; >>> + >>> + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; >>> + lp->irq_xfer_data.rx_buf = lp->irq_data; >>> + >>> + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); >>> + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); >>> +} >>> + >>> +static int >>> +mcr20a_phy_init(struct mcr20a_local *lp) >>> +{ >>> + u8 index; >>> + unsigned int phy_reg = 0; >>> + int ret; >>> + >>> + dev_dbg(printdev(lp), "%s\n", __func__); >>> + >>> + /* Disable Tristate on COCO MISO for SPI reads */ >>> + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts >>> + * immediately after init >>> + */ >>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Clear all PP IRQ bits in IRQSTS2 */ >>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, >>> + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | >>> + DAR_IRQSTS2_WAKE_IRQ); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Disable all timer interrupts */ >>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>> + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); >>> + >>> + /* PHY_CTRL2 : disable all interrupts */ >>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* PHY_CTRL3 : disable all timers and remaining interrupts */ >>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, >>> + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | >>> + DAR_PHY_CTRL3_WAKE_MSK); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* SRC_CTRL : enable Acknowledge Frame Pending and >>> + * Source Address Matching Enable >>> + */ >>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, >>> + DAR_SRC_CTRL_ACK_FRM_PND | >>> + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* RX_FRAME_FILTER */ >>> + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ >>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>> + IAR_RX_FRAME_FLT_FRM_VER | >>> + IAR_RX_FRAME_FLT_BEACON_FT | >>> + IAR_RX_FRAME_FLT_DATA_FT | >>> + IAR_RX_FRAME_FLT_CMD_FT); >>> + if (ret) >>> + goto err_ret; >>> + >>> + dev_info(printdev(lp), "overwrites version: 0x%02x\n", >>> + MCR20A_OVERWRITE_VERSION); >>> + >>> + /* Overwrites direct registers */ >>> + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, >>> + MCR20A_OVERWRITE_VERSION); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Overwrites indirect registers */ >>> + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, >>> + ARRAY_SIZE(mar20a_iar_overwrites)); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Clear HW indirect queue */ >>> + dev_dbg(printdev(lp), "clear HW indirect queue\n"); >>> + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { >>> + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << >>> + DAR_SRC_CTRL_INDEX_SHIFT) >>> + | (DAR_SRC_CTRL_SRCADDR_EN) >>> + | (DAR_SRC_CTRL_INDEX_DISABLE)); >>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); >>> + if (ret) >>> + goto err_ret; >>> + phy_reg = 0; >>> + } >>> + >>> + /* Assign HW Indirect hash table to PAN0 */ >>> + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* Clear current lvl */ >>> + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; >>> + >>> + /* Set new lvl */ >>> + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << >>> + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; >>> + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* set CCA threshold to -75 dBm */ >>> + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* set prescaller to obtain 1 symbol (16us) timebase */ >>> + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* enable autodoze mode. */ >>> + dev_dbg(printdev(lp), "enable autodoze mode\n"); >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, >>> + DAR_PWR_MODES_AUTODOZE, >>> + DAR_PWR_MODES_AUTODOZE); >>> + if (ret) >>> + goto err_ret; >>> + >>> + /* disable clk_out */ >>> + dev_dbg(printdev(lp), "disable clk_out\n"); >>> + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, >>> + DAR_CLK_OUT_CTRL_EN, 0x0); >>> + if (ret) >>> + goto err_ret; >>> + >>> + return 0; >>> + >>> +err_ret: >>> + return ret; >>> +} >>> + >>> +static int >>> +mcr20a_probe(struct spi_device *spi) >>> +{ >>> + struct ieee802154_hw *hw; >>> + struct mcr20a_local *lp; >>> + struct mcr20a_platform_data *pdata; >>> + int irq_type; >>> + int ret = -ENOMEM; >>> + >>> + dev_dbg(&spi->dev, "%s\n", __func__); >>> + >>> + if (!spi->irq) { >>> + dev_err(&spi->dev, "no IRQ specified\n"); >>> + return -EINVAL; >>> + } >>> + >>> + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); >>> + if (!pdata) >>> + return -ENOMEM; >>> + >>> + /* set mcr20a platform data */ >>> + ret = mcr20a_get_platform_data(spi, pdata); >>> + if (ret < 0) { >>> + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); >>> + return ret; >>> + } >>> + >>> + /* init reset gpio */ >>> + if (gpio_is_valid(pdata->rst_gpio)) { >>> + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, >>> + GPIOF_OUT_INIT_HIGH, "reset"); >>> + if (ret) >>> + return ret; >>> + } >>> + >>> + /* reset mcr20a */ >>> + if (gpio_is_valid(pdata->rst_gpio)) { >>> + usleep_range(10, 20); >>> + gpio_set_value_cansleep(pdata->rst_gpio, 0); >>> + usleep_range(10, 20); >>> + gpio_set_value_cansleep(pdata->rst_gpio, 1); >>> + usleep_range(120, 240); >>> + } >>> + >>> + /* allocate ieee802154_hw and private data */ >>> + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); >>> + if (!hw) { >>> + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); >>> + return -ENOMEM; >>> + } >>> + >>> + /* init mcr20a local data */ >>> + lp = hw->priv; >>> + lp->hw = hw; >>> + lp->spi = spi; >>> + lp->spi->dev.platform_data = pdata; >>> + lp->pdata = pdata; >>> + >>> + /* init ieee802154_hw */ >>> + hw->parent = &spi->dev; >>> + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); >>> + >>> + /* init buf */ >>> + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); >>> + >>> + if (!lp->buf) >>> + return -ENOMEM; >>> + >>> + mcr20a_setup_tx_spi_messages(lp); >>> + mcr20a_setup_rx_spi_messages(lp); >>> + mcr20a_setup_irq_spi_messages(lp); >>> + >>> + /* setup regmap */ >>> + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); >>> + if (IS_ERR(lp->regmap_dar)) { >>> + ret = PTR_ERR(lp->regmap_dar); >>> + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", >>> + ret); >>> + goto free_dev; >>> + } >>> + >>> + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); >>> + if (IS_ERR(lp->regmap_iar)) { >>> + ret = PTR_ERR(lp->regmap_iar); >>> + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); >>> + goto free_dev; >>> + } >>> + >>> + mcr20a_hw_setup(lp); >>> + >>> + spi_set_drvdata(spi, lp); >>> + >>> + ret = mcr20a_phy_init(lp); >>> + if (ret < 0) { >>> + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); >>> + goto free_dev; >>> + } >>> + >>> + irq_type = irq_get_trigger_type(spi->irq); >>> + if (!irq_type) >>> + irq_type = IRQF_TRIGGER_FALLING; >>> + >>> + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, >>> + irq_type, dev_name(&spi->dev), lp); >>> + if (ret) { >>> + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); >>> + ret = -ENODEV; >>> + goto free_dev; >>> + } >>> + >>> + /* disable_irq by default and wait for starting hardware */ >>> + disable_irq(spi->irq); >>> + >>> + ret = ieee802154_register_hw(hw); >>> + if (ret) { >>> + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); >>> + goto free_dev; >>> + } >>> + >>> + return ret; >>> + >>> +free_dev: >>> + ieee802154_free_hw(lp->hw); >>> + >>> + return ret; >>> +} >>> + >>> +static int mcr20a_remove(struct spi_device *spi) >>> +{ >>> + struct mcr20a_local *lp = spi_get_drvdata(spi); >>> + >>> + dev_dbg(&spi->dev, "%s\n", __func__); >>> + >>> + ieee802154_unregister_hw(lp->hw); >>> + ieee802154_free_hw(lp->hw); >>> + >>> + return 0; >>> +} >>> + >>> +static const struct of_device_id mcr20a_of_match[] = { >>> + { .compatible = "nxp,mcr20a", }, >>> + { }, >>> +}; >>> +MODULE_DEVICE_TABLE(of, mcr20a_of_match); >>> + >>> +static const struct spi_device_id mcr20a_device_id[] = { >>> + { .name = "mcr20a", }, >>> + { }, >>> +}; >>> +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); >>> + >>> +static struct spi_driver mcr20a_driver = { >>> + .id_table = mcr20a_device_id, >>> + .driver = { >>> + .of_match_table = of_match_ptr(mcr20a_of_match), >>> + .name = "mcr20a", >>> + }, >>> + .probe = mcr20a_probe, >>> + .remove = mcr20a_remove, >>> +}; >>> + >>> +module_spi_driver(mcr20a_driver); >>> + >>> +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); >>> +MODULE_LICENSE("GPL v2"); >>> +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); >>> diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h >>> new file mode 100644 >>> index 0000000..6da4fd0 >>> --- /dev/null >>> +++ b/drivers/net/ieee802154/mcr20a.h >>> @@ -0,0 +1,498 @@ >>> +/* >>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>> + * >>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>> + * >>> + * This program is free software; you can redistribute it and/or modify >>> + * it under the terms of the GNU General Public License version 2 >>> + * as published by the Free Software Foundation. >>> + * >>> + * This program is distributed in the hope that it will be useful, >>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>> + * GNU General Public License for more details. >>> + * >>> + */ >>> +#ifndef _MCR20A_H >>> +#define _MCR20A_H >>> + >>> +/* Direct Accress Register */ >>> +#define DAR_IRQ_STS1 0x00 >>> +#define DAR_IRQ_STS2 0x01 >>> +#define DAR_IRQ_STS3 0x02 >>> +#define DAR_PHY_CTRL1 0x03 >>> +#define DAR_PHY_CTRL2 0x04 >>> +#define DAR_PHY_CTRL3 0x05 >>> +#define DAR_RX_FRM_LEN 0x06 >>> +#define DAR_PHY_CTRL4 0x07 >>> +#define DAR_SRC_CTRL 0x08 >>> +#define DAR_SRC_ADDRS_SUM_LSB 0x09 >>> +#define DAR_SRC_ADDRS_SUM_MSB 0x0A >>> +#define DAR_CCA1_ED_FNL 0x0B >>> +#define DAR_EVENT_TMR_LSB 0x0C >>> +#define DAR_EVENT_TMR_MSB 0x0D >>> +#define DAR_EVENT_TMR_USB 0x0E >>> +#define DAR_TIMESTAMP_LSB 0x0F >>> +#define DAR_TIMESTAMP_MSB 0x10 >>> +#define DAR_TIMESTAMP_USB 0x11 >>> +#define DAR_T3CMP_LSB 0x12 >>> +#define DAR_T3CMP_MSB 0x13 >>> +#define DAR_T3CMP_USB 0x14 >>> +#define DAR_T2PRIMECMP_LSB 0x15 >>> +#define DAR_T2PRIMECMP_MSB 0x16 >>> +#define DAR_T1CMP_LSB 0x17 >>> +#define DAR_T1CMP_MSB 0x18 >>> +#define DAR_T1CMP_USB 0x19 >>> +#define DAR_T2CMP_LSB 0x1A >>> +#define DAR_T2CMP_MSB 0x1B >>> +#define DAR_T2CMP_USB 0x1C >>> +#define DAR_T4CMP_LSB 0x1D >>> +#define DAR_T4CMP_MSB 0x1E >>> +#define DAR_T4CMP_USB 0x1F >>> +#define DAR_PLL_INT0 0x20 >>> +#define DAR_PLL_FRAC0_LSB 0x21 >>> +#define DAR_PLL_FRAC0_MSB 0x22 >>> +#define DAR_PA_PWR 0x23 >>> +#define DAR_SEQ_STATE 0x24 >>> +#define DAR_LQI_VALUE 0x25 >>> +#define DAR_RSSI_CCA_CONT 0x26 >>> +/*------------------ 0x27 */ >>> +#define DAR_ASM_CTRL1 0x28 >>> +#define DAR_ASM_CTRL2 0x29 >>> +#define DAR_ASM_DATA_0 0x2A >>> +#define DAR_ASM_DATA_1 0x2B >>> +#define DAR_ASM_DATA_2 0x2C >>> +#define DAR_ASM_DATA_3 0x2D >>> +#define DAR_ASM_DATA_4 0x2E >>> +#define DAR_ASM_DATA_5 0x2F >>> +#define DAR_ASM_DATA_6 0x30 >>> +#define DAR_ASM_DATA_7 0x31 >>> +#define DAR_ASM_DATA_8 0x32 >>> +#define DAR_ASM_DATA_9 0x33 >>> +#define DAR_ASM_DATA_A 0x34 >>> +#define DAR_ASM_DATA_B 0x35 >>> +#define DAR_ASM_DATA_C 0x36 >>> +#define DAR_ASM_DATA_D 0x37 >>> +#define DAR_ASM_DATA_E 0x38 >>> +#define DAR_ASM_DATA_F 0x39 >>> +/*----------------------- 0x3A */ >>> +#define DAR_OVERWRITE_VER 0x3B >>> +#define DAR_CLK_OUT_CTRL 0x3C >>> +#define DAR_PWR_MODES 0x3D >>> +#define IAR_INDEX 0x3E >>> +#define IAR_DATA 0x3F >>> + >>> +/* Indirect Resgister Memory */ >>> +#define IAR_PART_ID 0x00 >>> +#define IAR_XTAL_TRIM 0x01 >>> +#define IAR_PMC_LP_TRIM 0x02 >>> +#define IAR_MACPANID0_LSB 0x03 >>> +#define IAR_MACPANID0_MSB 0x04 >>> +#define IAR_MACSHORTADDRS0_LSB 0x05 >>> +#define IAR_MACSHORTADDRS0_MSB 0x06 >>> +#define IAR_MACLONGADDRS0_0 0x07 >>> +#define IAR_MACLONGADDRS0_8 0x08 >>> +#define IAR_MACLONGADDRS0_16 0x09 >>> +#define IAR_MACLONGADDRS0_24 0x0A >>> +#define IAR_MACLONGADDRS0_32 0x0B >>> +#define IAR_MACLONGADDRS0_40 0x0C >>> +#define IAR_MACLONGADDRS0_48 0x0D >>> +#define IAR_MACLONGADDRS0_56 0x0E >>> +#define IAR_RX_FRAME_FILTER 0x0F >>> +#define IAR_PLL_INT1 0x10 >>> +#define IAR_PLL_FRAC1_LSB 0x11 >>> +#define IAR_PLL_FRAC1_MSB 0x12 >>> +#define IAR_MACPANID1_LSB 0x13 >>> +#define IAR_MACPANID1_MSB 0x14 >>> +#define IAR_MACSHORTADDRS1_LSB 0x15 >>> +#define IAR_MACSHORTADDRS1_MSB 0x16 >>> +#define IAR_MACLONGADDRS1_0 0x17 >>> +#define IAR_MACLONGADDRS1_8 0x18 >>> +#define IAR_MACLONGADDRS1_16 0x19 >>> +#define IAR_MACLONGADDRS1_24 0x1A >>> +#define IAR_MACLONGADDRS1_32 0x1B >>> +#define IAR_MACLONGADDRS1_40 0x1C >>> +#define IAR_MACLONGADDRS1_48 0x1D >>> +#define IAR_MACLONGADDRS1_56 0x1E >>> +#define IAR_DUAL_PAN_CTRL 0x1F >>> +#define IAR_DUAL_PAN_DWELL 0x20 >>> +#define IAR_DUAL_PAN_STS 0x21 >>> +#define IAR_CCA1_THRESH 0x22 >>> +#define IAR_CCA1_ED_OFFSET_COMP 0x23 >>> +#define IAR_LQI_OFFSET_COMP 0x24 >>> +#define IAR_CCA_CTRL 0x25 >>> +#define IAR_CCA2_CORR_PEAKS 0x26 >>> +#define IAR_CCA2_CORR_THRESH 0x27 >>> +#define IAR_TMR_PRESCALE 0x28 >>> +/*-------------------- 0x29 */ >>> +#define IAR_GPIO_DATA 0x2A >>> +#define IAR_GPIO_DIR 0x2B >>> +#define IAR_GPIO_PUL_EN 0x2C >>> +#define IAR_GPIO_PUL_SEL 0x2D >>> +#define IAR_GPIO_DS 0x2E >>> +/*------------------ 0x2F */ >>> +#define IAR_ANT_PAD_CTRL 0x30 >>> +#define IAR_MISC_PAD_CTRL 0x31 >>> +#define IAR_BSM_CTRL 0x32 >>> +/*------------------- 0x33 */ >>> +#define IAR_RNG 0x34 >>> +#define IAR_RX_BYTE_COUNT 0x35 >>> +#define IAR_RX_WTR_MARK 0x36 >>> +#define IAR_SOFT_RESET 0x37 >>> +#define IAR_TXDELAY 0x38 >>> +#define IAR_ACKDELAY 0x39 >>> +#define IAR_SEQ_MGR_CTRL 0x3A >>> +#define IAR_SEQ_MGR_STS 0x3B >>> +#define IAR_SEQ_T_STS 0x3C >>> +#define IAR_ABORT_STS 0x3D >>> +#define IAR_CCCA_BUSY_CNT 0x3E >>> +#define IAR_SRC_ADDR_CHECKSUM1 0x3F >>> +#define IAR_SRC_ADDR_CHECKSUM2 0x40 >>> +#define IAR_SRC_TBL_VALID1 0x41 >>> +#define IAR_SRC_TBL_VALID2 0x42 >>> +#define IAR_FILTERFAIL_CODE1 0x43 >>> +#define IAR_FILTERFAIL_CODE2 0x44 >>> +#define IAR_SLOT_PRELOAD 0x45 >>> +/*-------------------- 0x46 */ >>> +#define IAR_CORR_VT 0x47 >>> +#define IAR_SYNC_CTRL 0x48 >>> +#define IAR_PN_LSB_0 0x49 >>> +#define IAR_PN_LSB_1 0x4A >>> +#define IAR_PN_MSB_0 0x4B >>> +#define IAR_PN_MSB_1 0x4C >>> +#define IAR_CORR_NVAL 0x4D >>> +#define IAR_TX_MODE_CTRL 0x4E >>> +#define IAR_SNF_THR 0x4F >>> +#define IAR_FAD_THR 0x50 >>> +#define IAR_ANT_AGC_CTRL 0x51 >>> +#define IAR_AGC_THR1 0x52 >>> +#define IAR_AGC_THR2 0x53 >>> +#define IAR_AGC_HYS 0x54 >>> +#define IAR_AFC 0x55 >>> +/*------------------- 0x56 */ >>> +/*------------------- 0x57 */ >>> +#define IAR_PHY_STS 0x58 >>> +#define IAR_RX_MAX_CORR 0x59 >>> +#define IAR_RX_MAX_PREAMBLE 0x5A >>> +#define IAR_RSSI 0x5B >>> +/*------------------- 0x5C */ >>> +/*------------------- 0x5D */ >>> +#define IAR_PLL_DIG_CTRL 0x5E >>> +#define IAR_VCO_CAL 0x5F >>> +#define IAR_VCO_BEST_DIFF 0x60 >>> +#define IAR_VCO_BIAS 0x61 >>> +#define IAR_KMOD_CTRL 0x62 >>> +#define IAR_KMOD_CAL 0x63 >>> +#define IAR_PA_CAL 0x64 >>> +#define IAR_PA_PWRCAL 0x65 >>> +#define IAR_ATT_RSSI1 0x66 >>> +#define IAR_ATT_RSSI2 0x67 >>> +#define IAR_RSSI_OFFSET 0x68 >>> +#define IAR_RSSI_SLOPE 0x69 >>> +#define IAR_RSSI_CAL1 0x6A >>> +#define IAR_RSSI_CAL2 0x6B >>> +/*------------------- 0x6C */ >>> +/*------------------- 0x6D */ >>> +#define IAR_XTAL_CTRL 0x6E >>> +#define IAR_XTAL_COMP_MIN 0x6F >>> +#define IAR_XTAL_COMP_MAX 0x70 >>> +#define IAR_XTAL_GM 0x71 >>> +/*------------------- 0x72 */ >>> +/*------------------- 0x73 */ >>> +#define IAR_LNA_TUNE 0x74 >>> +#define IAR_LNA_AGCGAIN 0x75 >>> +/*------------------- 0x76 */ >>> +/*------------------- 0x77 */ >>> +#define IAR_CHF_PMA_GAIN 0x78 >>> +#define IAR_CHF_IBUF 0x79 >>> +#define IAR_CHF_QBUF 0x7A >>> +#define IAR_CHF_IRIN 0x7B >>> +#define IAR_CHF_QRIN 0x7C >>> +#define IAR_CHF_IL 0x7D >>> +#define IAR_CHF_QL 0x7E >>> +#define IAR_CHF_CC1 0x7F >>> +#define IAR_CHF_CCL 0x80 >>> +#define IAR_CHF_CC2 0x81 >>> +#define IAR_CHF_IROUT 0x82 >>> +#define IAR_CHF_QROUT 0x83 >>> +/*------------------- 0x84 */ >>> +/*------------------- 0x85 */ >>> +#define IAR_RSSI_CTRL 0x86 >>> +/*------------------- 0x87 */ >>> +/*------------------- 0x88 */ >>> +#define IAR_PA_BIAS 0x89 >>> +#define IAR_PA_TUNING 0x8A >>> +/*------------------- 0x8B */ >>> +/*------------------- 0x8C */ >>> +#define IAR_PMC_HP_TRIM 0x8D >>> +#define IAR_VREGA_TRIM 0x8E >>> +/*------------------- 0x8F */ >>> +/*------------------- 0x90 */ >>> +#define IAR_VCO_CTRL1 0x91 >>> +#define IAR_VCO_CTRL2 0x92 >>> +/*------------------- 0x93 */ >>> +/*------------------- 0x94 */ >>> +#define IAR_ANA_SPARE_OUT1 0x95 >>> +#define IAR_ANA_SPARE_OUT2 0x96 >>> +#define IAR_ANA_SPARE_IN 0x97 >>> +#define IAR_MISCELLANEOUS 0x98 >>> +/*------------------- 0x99 */ >>> +#define IAR_SEQ_MGR_OVRD0 0x9A >>> +#define IAR_SEQ_MGR_OVRD1 0x9B >>> +#define IAR_SEQ_MGR_OVRD2 0x9C >>> +#define IAR_SEQ_MGR_OVRD3 0x9D >>> +#define IAR_SEQ_MGR_OVRD4 0x9E >>> +#define IAR_SEQ_MGR_OVRD5 0x9F >>> +#define IAR_SEQ_MGR_OVRD6 0xA0 >>> +#define IAR_SEQ_MGR_OVRD7 0xA1 >>> +/*------------------- 0xA2 */ >>> +#define IAR_TESTMODE_CTRL 0xA3 >>> +#define IAR_DTM_CTRL1 0xA4 >>> +#define IAR_DTM_CTRL2 0xA5 >>> +#define IAR_ATM_CTRL1 0xA6 >>> +#define IAR_ATM_CTRL2 0xA7 >>> +#define IAR_ATM_CTRL3 0xA8 >>> +/*------------------- 0xA9 */ >>> +#define IAR_LIM_FE_TEST_CTRL 0xAA >>> +#define IAR_CHF_TEST_CTRL 0xAB >>> +#define IAR_VCO_TEST_CTRL 0xAC >>> +#define IAR_PLL_TEST_CTRL 0xAD >>> +#define IAR_PA_TEST_CTRL 0xAE >>> +#define IAR_PMC_TEST_CTRL 0xAF >>> +#define IAR_SCAN_DTM_PROTECT_1 0xFE >>> +#define IAR_SCAN_DTM_PROTECT_0 0xFF >>> + >>> +/* IRQSTS1 bits */ >>> +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) >>> +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) >>> +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) >>> +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) >>> +#define DAR_IRQSTS1_CCAIRQ BIT(3) >>> +#define DAR_IRQSTS1_RXIRQ BIT(2) >>> +#define DAR_IRQSTS1_TXIRQ BIT(1) >>> +#define DAR_IRQSTS1_SEQIRQ BIT(0) >>> + >>> +/* IRQSTS2 bits */ >>> +#define DAR_IRQSTS2_CRCVALID BIT(7) >>> +#define DAR_IRQSTS2_CCA BIT(6) >>> +#define DAR_IRQSTS2_SRCADDR BIT(5) >>> +#define DAR_IRQSTS2_PI BIT(4) >>> +#define DAR_IRQSTS2_TMRSTATUS BIT(3) >>> +#define DAR_IRQSTS2_ASM_IRQ BIT(2) >>> +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) >>> +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) >>> + >>> +/* IRQSTS3 bits */ >>> +#define DAR_IRQSTS3_TMR4MSK BIT(7) >>> +#define DAR_IRQSTS3_TMR3MSK BIT(6) >>> +#define DAR_IRQSTS3_TMR2MSK BIT(5) >>> +#define DAR_IRQSTS3_TMR1MSK BIT(4) >>> +#define DAR_IRQSTS3_TMR4IRQ BIT(3) >>> +#define DAR_IRQSTS3_TMR3IRQ BIT(2) >>> +#define DAR_IRQSTS3_TMR2IRQ BIT(1) >>> +#define DAR_IRQSTS3_TMR1IRQ BIT(0) >>> + >>> +/* PHY_CTRL1 bits */ >>> +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) >>> +#define DAR_PHY_CTRL1_SLOTTED BIT(6) >>> +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) >>> +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 >>> +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) >>> +#define DAR_PHY_CTRL1_AUTOACK BIT(3) >>> +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 >>> + >>> +/* PHY_CTRL2 bits */ >>> +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) >>> +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) >>> +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) >>> +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) >>> +#define DAR_PHY_CTRL2_CCAMSK BIT(3) >>> +#define DAR_PHY_CTRL2_RXMSK BIT(2) >>> +#define DAR_PHY_CTRL2_TXMSK BIT(1) >>> +#define DAR_PHY_CTRL2_SEQMSK BIT(0) >>> + >>> +/* PHY_CTRL3 bits */ >>> +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) >>> +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) >>> +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) >>> +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) >>> +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) >>> +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) >>> +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) >>> + >>> +/* RX_FRM_LEN bits */ >>> +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) >>> + >>> +/* PHY_CTRL4 bits */ >>> +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) >>> +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) >>> +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) >>> +#define DAR_PHY_CTRL4_CCATYPE (3) >>> +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) >>> +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) >>> +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) >>> +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) >>> +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) >>> + >>> +/* SRC_CTRL bits */ >>> +#define DAR_SRC_CTRL_INDEX (0x0F) >>> +#define DAR_SRC_CTRL_INDEX_SHIFT (4) >>> +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) >>> +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) >>> +#define DAR_SRC_CTRL_INDEX_EN BIT(1) >>> +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) >>> + >>> +/* DAR_ASM_CTRL1 bits */ >>> +#define DAR_ASM_CTRL1_CLEAR BIT(7) >>> +#define DAR_ASM_CTRL1_START BIT(6) >>> +#define DAR_ASM_CTRL1_SELFTST BIT(5) >>> +#define DAR_ASM_CTRL1_CTR BIT(4) >>> +#define DAR_ASM_CTRL1_CBC BIT(3) >>> +#define DAR_ASM_CTRL1_AES BIT(2) >>> +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) >>> + >>> +/* DAR_ASM_CTRL2 bits */ >>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) >>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) >>> +#define DAR_ASM_CTRL2_TSTPAS BIT(1) >>> + >>> +/* DAR_CLK_OUT_CTRL bits */ >>> +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) >>> +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) >>> +#define DAR_CLK_OUT_CTRL_SR BIT(5) >>> +#define DAR_CLK_OUT_CTRL_DS BIT(4) >>> +#define DAR_CLK_OUT_CTRL_EN BIT(3) >>> +#define DAR_CLK_OUT_CTRL_DIV (7) >>> + >>> +/* DAR_PWR_MODES bits */ >>> +#define DAR_PWR_MODES_XTAL_READY BIT(5) >>> +#define DAR_PWR_MODES_XTALEN BIT(4) >>> +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) >>> +#define DAR_PWR_MODES_AUTODOZE BIT(1) >>> +#define DAR_PWR_MODES_PMC_MODE BIT(0) >>> + >>> +/* RX_FRAME_FILTER bits */ >>> +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) >>> +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) >>> +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) >>> +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) >>> +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) >>> +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) >>> +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) >>> +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) >>> + >>> +/* DUAL_PAN_CTRL bits */ >>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) >>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) >>> +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) >>> +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) >>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) >>> +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) >>> + >>> +/* DUAL_PAN_STS bits */ >>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) >>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) >>> +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) >>> + >>> +/* CCA_CTRL bits */ >>> +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) >>> +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) >>> +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) >>> +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) >>> +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) >>> +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) >>> +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) >>> + >>> +/* ANT_PAD_CTRL bits */ >>> +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) >>> +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) >>> +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) >>> +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) >>> +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) >>> + >>> +/* MISC_PAD_CTRL bits */ >>> +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) >>> +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) >>> +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) >>> +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) >>> + >>> +/* ANT_AGC_CTRL bits */ >>> +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) >>> +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) >>> +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) >>> +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) >>> + >>> +/* BSM_CTRL bits */ >>> +#define BSM_CTRL_BSM_EN (1) >>> + >>> +/* SOFT_RESET bits */ >>> +#define IAR_SOFT_RESET_SOG_RST BIT(7) >>> +#define IAR_SOFT_RESET_REGS_RST BIT(4) >>> +#define IAR_SOFT_RESET_PLL_RST BIT(3) >>> +#define IAR_SOFT_RESET_TX_RST BIT(2) >>> +#define IAR_SOFT_RESET_RX_RST BIT(1) >>> +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) >>> + >>> +/* SEQ_MGR_CTRL bits */ >>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) >>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) >>> +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) >>> +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) >>> +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) >>> +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) >>> +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) >>> +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) >>> + >>> +/* SEQ_MGR_STS bits */ >>> +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) >>> +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) >>> +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) >>> +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) >>> +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) >>> +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) >>> + >>> +/* ABORT_STS bits */ >>> +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) >>> +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) >>> +#define IAR_ABORT_STS_SW_ABORTED BIT(0) >>> + >>> +/* IAR_FILTERFAIL_CODE2 bits */ >>> +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) >>> +#define IAR_FILTERFAIL_CODE2_9_8 (3) >>> + >>> +/* PHY_STS bits */ >>> +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) >>> +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) >>> +#define IAR_PHY_STS_PLL_LOCK BIT(5) >>> +#define IAR_PHY_STS_CRCVALID BIT(3) >>> +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) >>> +#define IAR_PHY_STS_SFD_DET BIT(1) >>> +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) >>> + >>> +/* TESTMODE_CTRL bits */ >>> +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) >>> +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) >>> +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) >>> +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) >>> +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) >>> + >>> +/* DTM_CTRL1 bits */ >>> +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) >>> +#define IAR_DTM_CTRL1_DTM_EN BIT(6) >>> +#define IAR_DTM_CTRL1_PAGE5 BIT(5) >>> +#define IAR_DTM_CTRL1_PAGE4 BIT(4) >>> +#define IAR_DTM_CTRL1_PAGE3 BIT(3) >>> +#define IAR_DTM_CTRL1_PAGE2 BIT(2) >>> +#define IAR_DTM_CTRL1_PAGE1 BIT(1) >>> +#define IAR_DTM_CTRL1_PAGE0 BIT(0) >>> + >>> +/* TX_MODE_CTRL */ >>> +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) >>> +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) >>> +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) >>> +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) >>> +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) >>> + >>> +#define TX_MODE_CTRL_DTS_MASK (7) >>> + >>> +#endif /* _MCR20A_H */ >> The rest looks fine. >> >> regards >> Stefan Schmidt With the small nitpick from above fixed I would go ahead and apply this patchset tomorrow. Let me know if you will send a new version or if I should amend the small change myself. regards Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello. I have one more question about ieee802154_ops.ed function. How to test this function ? Thanks Regards, Xue Liu On 19 February 2018 at 23:37, Stefan Schmidt <stefan@osg.samsung.com> wrote: > Hello. > > > On 02/19/2018 10:40 PM, Xue Liu wrote: >> Hello Stefan, >> >> Thanks for the second review. >> >> On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: >>> Hello. >>> >>> On Mon, 2018-02-19 at 11:51, Xue Liu wrote: >>>> This is a driver for the NXP MCR20A 802.15.4 transceiver. >>>> >>>> The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. >>> Please break the lines here around 72 chars so it can be sanely viewed >>> in git log. >>> >> OK. >>>> This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. >>> >>> Wow, I honetsly did not realise CSMA was not done in hardware on this chip. >>> This can be a real problem in busy deplyoment scenarios. >>> >>> From the kernel stack perspective this make thes second timing critical item >>> we migth need to have a softMAC solution for. first ACK handling and now CSMA. >>> >>> If anybody on this list has an interest in digging into the time constraints >>> we have for this in 802.15.4 and find out if the current realtime infrastructure >>> of the kernel offers us what we need for these constraints this would be very >>> welcome! But I am drifting of the actual review of this driver. :-) >>> >>> >> If I remember correctly. Many 802.15.4 chips except at86rf23x have no >> full CSMA support. They have only CCA. >> Is it possible to use hrtimer to control such time constrains ? > > That would be something to find out. I'm honestly not sure. Never really checked out what real time constraints are supported by now. > >>>> https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf >>>> >>>> Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> >>>> --- >>>> drivers/net/ieee802154/Kconfig | 11 + >>>> drivers/net/ieee802154/Makefile | 1 + >>>> drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ >>>> drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ >>>> 4 files changed, 1970 insertions(+) >>>> create mode 100644 drivers/net/ieee802154/mcr20a.c >>>> create mode 100644 drivers/net/ieee802154/mcr20a.h >>>> >>>> diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig >>>> index 303ba41..8782f56 100644 >>>> --- a/drivers/net/ieee802154/Kconfig >>>> +++ b/drivers/net/ieee802154/Kconfig >>>> @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS >>>> exposes a debugfs node for each CA8210 instance which allows >>>> direct use of the Cascoda API, exposing the 802.15.4 MAC >>>> management entities. >>>> + >>>> +config IEEE802154_MCR20A >>>> + tristate "MCR20A transceiver driver" >>>> + depends on IEEE802154_DRIVERS && MAC802154 >>>> + depends on SPI >>>> + ---help--- >>>> + Say Y here to enable the MCR20A SPI 802.15.4 wireless >>>> + controller. >>>> + >>>> + This driver can also be built as a module. To do so, say M here. >>>> + the module will be called 'mcr20a'. >>>> diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile >>>> index bea1de5..104744d 100644 >>>> --- a/drivers/net/ieee802154/Makefile >>>> +++ b/drivers/net/ieee802154/Makefile >>>> @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o >>>> obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o >>>> obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o >>>> obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o >>>> +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o >>>> diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c >>>> new file mode 100644 >>>> index 0000000..90712e9 >>>> --- /dev/null >>>> +++ b/drivers/net/ieee802154/mcr20a.c >>>> @@ -0,0 +1,1460 @@ >>>> +/* >>>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>>> + * >>>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>>> + * >>>> + * This program is free software; you can redistribute it and/or modify >>>> + * it under the terms of the GNU General Public License version 2 >>>> + * as published by the Free Software Foundation. >>>> + * >>>> + * This program is distributed in the hope that it will be useful, >>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>>> + * GNU General Public License for more details. >>>> + * >>>> + */ >>>> +#include <linux/kernel.h> >>>> +#include <linux/module.h> >>>> +#include <linux/gpio.h> >>>> +#include <linux/spi/spi.h> >>>> +#include <linux/workqueue.h> >>>> +#include <linux/interrupt.h> >>>> +#include <linux/skbuff.h> >>>> +#include <linux/of_gpio.h> >>>> +#include <linux/regmap.h> >>>> +#include <linux/ieee802154.h> >>>> +#include <linux/debugfs.h> >>>> + >>>> +#include <net/mac802154.h> >>>> +#include <net/cfg802154.h> >>>> + >>>> +#include <linux/device.h> >>>> + >>>> +#include "mcr20a.h" >>>> + >>>> +#define SPI_COMMAND_BUFFER 3 >>>> + >>>> +#define REGISTER_READ BIT(7) >>>> +#define REGISTER_WRITE (0 << 7) >>>> +#define REGISTER_ACCESS (0 << 6) >>>> +#define PACKET_BUFF_BURST_ACCESS BIT(6) >>>> +#define PACKET_BUFF_BYTE_ACCESS BIT(5) >>>> + >>>> +#define MCR20A_WRITE_REG(x) (x) >>>> +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) >>>> +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) >>>> +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) >>>> + >>>> +#define MCR20A_CMD_REG 0x80 >>>> +#define MCR20A_CMD_REG_MASK 0x3f >>>> +#define MCR20A_CMD_WRITE 0x40 >>>> +#define MCR20A_CMD_FB 0x20 >>> Some of these indents look wrong in my mailer. Did you run this patch through >>> the checkpatch script? >>> >> Yes. 0 erros and 0 warnings. But I will check it again. > > Fair enough. Maybe my mailer was just off in that case. > I will run in through checkpatch anyway before I apply it to my tree. > >>>> +/* Number of Interrupt Request Status Register */ >>>> +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ >>>> + >>>> +/* MCR20A CCA Type */ >>>> +enum { >>>> + MCR20A_CCA_ED, // energy detect - CCA bit not active, >>>> + // not to be used for T and CCCA sequences >>>> + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE >>>> + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE >>>> + MCR20A_CCA_MODE3 >>>> +}; >>>> + >>>> +enum { >>>> + MCR20A_XCVSEQ_IDLE = 0x00, >>>> + MCR20A_XCVSEQ_RX = 0x01, >>>> + MCR20A_XCVSEQ_TX = 0x02, >>>> + MCR20A_XCVSEQ_CCA = 0x03, >>>> + MCR20A_XCVSEQ_TR = 0x04, >>>> + MCR20A_XCVSEQ_CCCA = 0x05, >>>> +}; >>>> + >>>> +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ >>>> +#define MCR20A_MIN_CHANNEL (11) >>>> +#define MCR20A_MAX_CHANNEL (26) >>>> +#define MCR20A_CHANNEL_SPACING (5) >>>> + >>>> +/* MCR20A CCA Threshold constans */ >>>> +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) >>>> +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) >>>> + >>>> +/* version 0C */ >>>> +#define MCR20A_OVERWRITE_VERSION (0x0C) >>>> + >>>> +/* MCR20A PLL configurations */ >>>> +static const u8 PLL_INT[16] = { >>>> + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, >>>> + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, >>>> + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, >>>> + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, >>>> + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, >>>> + /* 2480 */ 0x0D >>>> +}; >>>> + >>>> +static const u8 PLL_FRAC[16] = { >>>> + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, >>>> + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, >>>> + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, >>>> + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, >>>> + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, >>>> + /* 2480 */ 0x80 >>>> +}; >>>> + >>>> +static const struct reg_sequence mar20a_iar_overwrites[] = { >>>> + { IAR_MISC_PAD_CTRL, 0x02 }, >>>> + { IAR_VCO_CTRL1, 0xB3 }, >>>> + { IAR_VCO_CTRL2, 0x07 }, >>>> + { IAR_PA_TUNING, 0x71 }, >>>> + { IAR_CHF_IBUF, 0x2F }, >>>> + { IAR_CHF_QBUF, 0x2F }, >>>> + { IAR_CHF_IRIN, 0x24 }, >>>> + { IAR_CHF_QRIN, 0x24 }, >>>> + { IAR_CHF_IL, 0x24 }, >>>> + { IAR_CHF_QL, 0x24 }, >>>> + { IAR_CHF_CC1, 0x32 }, >>>> + { IAR_CHF_CCL, 0x1D }, >>>> + { IAR_CHF_CC2, 0x2D }, >>>> + { IAR_CHF_IROUT, 0x24 }, >>>> + { IAR_CHF_QROUT, 0x24 }, >>>> + { IAR_PA_CAL, 0x28 }, >>>> + { IAR_AGC_THR1, 0x55 }, >>>> + { IAR_AGC_THR2, 0x2D }, >>>> + { IAR_ATT_RSSI1, 0x5F }, >>>> + { IAR_ATT_RSSI2, 0x8F }, >>>> + { IAR_RSSI_OFFSET, 0x61 }, >>>> + { IAR_CHF_PMA_GAIN, 0x03 }, >>>> + { IAR_CCA1_THRESH, 0x50 }, >>>> + { IAR_CORR_NVAL, 0x13 }, >>>> + { IAR_ACKDELAY, 0x3D }, >>>> +}; >>>> + >>>> +#define MCR20A_VALID_CHANNELS (0x07FFF800) >>>> + >>>> +struct mcr20a_platform_data { >>>> + int rst_gpio; >>>> +}; >>>> + >>>> +#define MCR20A_MAX_BUF (127) >>>> + >>>> +#define printdev(X) (&X->spi->dev) >>>> + >>>> +/* regmap information for Direct Access Register (DAR) access */ >>>> +#define MCR20A_DAR_WRITE 0x01 >>>> +#define MCR20A_DAR_READ 0x00 >>>> +#define MCR20A_DAR_NUMREGS 0x3F >>>> + >>>> +/* regmap information for Indirect Access Register (IAR) access */ >>>> +#define MCR20A_IAR_ACCESS 0x80 >>>> +#define MCR20A_IAR_NUMREGS 0xBEFF >>>> + >>>> +/* Read/Write SPI Commands for DAR and IAR registers. */ >>>> +#define MCR20A_READSHORT(reg) ((reg) << 1) >>>> +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) >>>> +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) >>>> +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) >>>> + >>>> +/* Type definitions for link configuration of instantiable layers */ >>>> +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) >>>> + >>>> +static bool >>>> +mcr20a_dar_writeable(struct device *dev, unsigned int reg) >>>> +{ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + case DAR_PHY_CTRL1: >>>> + case DAR_PHY_CTRL2: >>>> + case DAR_PHY_CTRL3: >>>> + case DAR_PHY_CTRL4: >>>> + case DAR_SRC_CTRL: >>>> + case DAR_SRC_ADDRS_SUM_LSB: >>>> + case DAR_SRC_ADDRS_SUM_MSB: >>>> + case DAR_T3CMP_LSB: >>>> + case DAR_T3CMP_MSB: >>>> + case DAR_T3CMP_USB: >>>> + case DAR_T2PRIMECMP_LSB: >>>> + case DAR_T2PRIMECMP_MSB: >>>> + case DAR_T1CMP_LSB: >>>> + case DAR_T1CMP_MSB: >>>> + case DAR_T1CMP_USB: >>>> + case DAR_T2CMP_LSB: >>>> + case DAR_T2CMP_MSB: >>>> + case DAR_T2CMP_USB: >>>> + case DAR_T4CMP_LSB: >>>> + case DAR_T4CMP_MSB: >>>> + case DAR_T4CMP_USB: >>>> + case DAR_PLL_INT0: >>>> + case DAR_PLL_FRAC0_LSB: >>>> + case DAR_PLL_FRAC0_MSB: >>>> + case DAR_PA_PWR: >>>> + /* no DAR_ACM */ >>>> + case DAR_OVERWRITE_VER: >>>> + case DAR_CLK_OUT_CTRL: >>>> + case DAR_PWR_MODES: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_readable(struct device *dev, unsigned int reg) >>>> +{ >>>> + bool rc; >>>> + >>>> + /* all writeable are also readable */ >>>> + rc = mcr20a_dar_writeable(dev, reg); >>>> + if (rc) >>>> + return rc; >>>> + >>>> + /* readonly regs */ >>>> + switch (reg) { >>>> + case DAR_RX_FRM_LEN: >>>> + case DAR_CCA1_ED_FNL: >>>> + case DAR_EVENT_TMR_LSB: >>>> + case DAR_EVENT_TMR_MSB: >>>> + case DAR_EVENT_TMR_USB: >>>> + case DAR_TIMESTAMP_LSB: >>>> + case DAR_TIMESTAMP_MSB: >>>> + case DAR_TIMESTAMP_USB: >>>> + case DAR_SEQ_STATE: >>>> + case DAR_LQI_VALUE: >>>> + case DAR_RSSI_CCA_CONT: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_volatile(struct device *dev, unsigned int reg) >>>> +{ >>>> + /* can be changed during runtime */ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + /* use them in spi_async and regmap so it's volatile */ >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_precious(struct device *dev, unsigned int reg) >>>> +{ >>>> + /* don't clear irq line on read */ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static const struct regmap_config mcr20a_dar_regmap = { >>>> + .name = "mcr20a_dar", >>>> + .reg_bits = 8, >>>> + .val_bits = 8, >>>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, >>>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, >>>> + .cache_type = REGCACHE_RBTREE, >>>> + .writeable_reg = mcr20a_dar_writeable, >>>> + .readable_reg = mcr20a_dar_readable, >>>> + .volatile_reg = mcr20a_dar_volatile, >>>> + .precious_reg = mcr20a_dar_precious, >>>> + .fast_io = true, >>>> + .can_multi_write = true, >>>> +}; >>>> + >>>> +static bool >>>> +mcr20a_iar_writeable(struct device *dev, unsigned int reg) >>>> +{ >>>> + switch (reg) { >>>> + case IAR_XTAL_TRIM: >>>> + case IAR_PMC_LP_TRIM: >>>> + case IAR_MACPANID0_LSB: >>>> + case IAR_MACPANID0_MSB: >>>> + case IAR_MACSHORTADDRS0_LSB: >>>> + case IAR_MACSHORTADDRS0_MSB: >>>> + case IAR_MACLONGADDRS0_0: >>>> + case IAR_MACLONGADDRS0_8: >>>> + case IAR_MACLONGADDRS0_16: >>>> + case IAR_MACLONGADDRS0_24: >>>> + case IAR_MACLONGADDRS0_32: >>>> + case IAR_MACLONGADDRS0_40: >>>> + case IAR_MACLONGADDRS0_48: >>>> + case IAR_MACLONGADDRS0_56: >>>> + case IAR_RX_FRAME_FILTER: >>>> + case IAR_PLL_INT1: >>>> + case IAR_PLL_FRAC1_LSB: >>>> + case IAR_PLL_FRAC1_MSB: >>>> + case IAR_MACPANID1_LSB: >>>> + case IAR_MACPANID1_MSB: >>>> + case IAR_MACSHORTADDRS1_LSB: >>>> + case IAR_MACSHORTADDRS1_MSB: >>>> + case IAR_MACLONGADDRS1_0: >>>> + case IAR_MACLONGADDRS1_8: >>>> + case IAR_MACLONGADDRS1_16: >>>> + case IAR_MACLONGADDRS1_24: >>>> + case IAR_MACLONGADDRS1_32: >>>> + case IAR_MACLONGADDRS1_40: >>>> + case IAR_MACLONGADDRS1_48: >>>> + case IAR_MACLONGADDRS1_56: >>>> + case IAR_DUAL_PAN_CTRL: >>>> + case IAR_DUAL_PAN_DWELL: >>>> + case IAR_CCA1_THRESH: >>>> + case IAR_CCA1_ED_OFFSET_COMP: >>>> + case IAR_LQI_OFFSET_COMP: >>>> + case IAR_CCA_CTRL: >>>> + case IAR_CCA2_CORR_PEAKS: >>>> + case IAR_CCA2_CORR_THRESH: >>>> + case IAR_TMR_PRESCALE: >>>> + case IAR_ANT_PAD_CTRL: >>>> + case IAR_MISC_PAD_CTRL: >>>> + case IAR_BSM_CTRL: >>>> + case IAR_RNG: >>>> + case IAR_RX_WTR_MARK: >>>> + case IAR_SOFT_RESET: >>>> + case IAR_TXDELAY: >>>> + case IAR_ACKDELAY: >>>> + case IAR_CORR_NVAL: >>>> + case IAR_ANT_AGC_CTRL: >>>> + case IAR_AGC_THR1: >>>> + case IAR_AGC_THR2: >>>> + case IAR_PA_CAL: >>>> + case IAR_ATT_RSSI1: >>>> + case IAR_ATT_RSSI2: >>>> + case IAR_RSSI_OFFSET: >>>> + case IAR_XTAL_CTRL: >>>> + case IAR_CHF_PMA_GAIN: >>>> + case IAR_CHF_IBUF: >>>> + case IAR_CHF_QBUF: >>>> + case IAR_CHF_IRIN: >>>> + case IAR_CHF_QRIN: >>>> + case IAR_CHF_IL: >>>> + case IAR_CHF_QL: >>>> + case IAR_CHF_CC1: >>>> + case IAR_CHF_CCL: >>>> + case IAR_CHF_CC2: >>>> + case IAR_CHF_IROUT: >>>> + case IAR_CHF_QROUT: >>>> + case IAR_PA_TUNING: >>>> + case IAR_VCO_CTRL1: >>>> + case IAR_VCO_CTRL2: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_iar_readable(struct device *dev, unsigned int reg) >>>> +{ >>>> + bool rc; >>>> + >>>> + /* all writeable are also readable */ >>>> + rc = mcr20a_iar_writeable(dev, reg); >>>> + if (rc) >>>> + return rc; >>>> + >>>> + /* readonly regs */ >>>> + switch (reg) { >>>> + case IAR_PART_ID: >>>> + case IAR_DUAL_PAN_STS: >>>> + case IAR_RX_BYTE_COUNT: >>>> + case IAR_FILTERFAIL_CODE1: >>>> + case IAR_FILTERFAIL_CODE2: >>>> + case IAR_RSSI: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_iar_volatile(struct device *dev, unsigned int reg) >>>> +{ >>>> +/* can be changed during runtime */ >>>> + switch (reg) { >>>> + case IAR_DUAL_PAN_STS: >>>> + case IAR_RX_BYTE_COUNT: >>>> + case IAR_FILTERFAIL_CODE1: >>>> + case IAR_FILTERFAIL_CODE2: >>>> + case IAR_RSSI: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static const struct regmap_config mcr20a_iar_regmap = { >>>> + .name = "mcr20a_iar", >>>> + .reg_bits = 16, >>>> + .val_bits = 8, >>>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, >>>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, >>>> + .cache_type = REGCACHE_RBTREE, >>>> + .writeable_reg = mcr20a_iar_writeable, >>>> + .readable_reg = mcr20a_iar_readable, >>>> + .volatile_reg = mcr20a_iar_volatile, >>>> + .fast_io = true, >>>> +}; >>>> + >>>> +struct mcr20a_local { >>>> + struct spi_device *spi; >>>> + >>>> + struct ieee802154_hw *hw; >>>> + struct mcr20a_platform_data *pdata; >>>> + struct regmap *regmap_dar; >>>> + struct regmap *regmap_iar; >>>> + >>>> + u8 *buf; >>>> + >>>> + bool is_tx; >>>> + >>>> + /* for writing tx buffer */ >>>> + struct spi_message tx_buf_msg; >>>> + u8 tx_header[1]; >>>> + /* burst buffer write command */ >>>> + struct spi_transfer tx_xfer_header; >>>> + u8 tx_len[1]; >>>> + /* len of tx packet */ >>>> + struct spi_transfer tx_xfer_len; >>>> + /* data of tx packet */ >>>> + struct spi_transfer tx_xfer_buf; >>>> + struct sk_buff *tx_skb; >>>> + >>>> + /* for read length rxfifo */ >>>> + struct spi_message reg_msg; >>>> + u8 reg_cmd[1]; >>>> + u8 reg_data[MCR20A_IRQSTS_NUM]; >>>> + struct spi_transfer reg_xfer_cmd; >>>> + struct spi_transfer reg_xfer_data; >>>> + >>>> + /* receive handling */ >>>> + struct spi_message rx_buf_msg; >>>> + u8 rx_header[1]; >>>> + struct spi_transfer rx_xfer_header; >>>> + u8 rx_lqi[1]; >>>> + struct spi_transfer rx_xfer_lqi; >>>> + u8 rx_buf[MCR20A_MAX_BUF]; >>>> + struct spi_transfer rx_xfer_buf; >>>> + >>>> + /* isr handling for reading intstat */ >>>> + struct spi_message irq_msg; >>>> + u8 irq_header[1]; >>>> + u8 irq_data[MCR20A_IRQSTS_NUM]; >>>> + struct spi_transfer irq_xfer_data; >>>> + struct spi_transfer irq_xfer_header; >>>> +}; >>>> + >>>> +static void >>>> +mcr20a_write_tx_buf_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + lp->reg_msg.complete = NULL; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>>> + lp->reg_data[0] = MCR20A_XCVSEQ_TX; >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + ret = spi_async(lp->spi, &lp->reg_msg); >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to set SEQ TX\n"); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + lp->tx_skb = skb; >>>> + >>>> +#ifdef DEBUG >>>> + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, >>>> + skb->data, skb->len, 0); >>>> +#endif >>>> + >>>> + lp->is_tx = 1; >>>> + >>>> + lp->reg_msg.complete = NULL; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>>> + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + return spi_async(lp->spi, &lp->reg_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + unsigned int val = 0; >>>> + u8 energy_level; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); >>>> + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { >>>> + /* Change CCA Type to 00 - Energy Detect */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); >>>> + /* Perform ED */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>>> + MCR20A_XCVSEQ_CCA); >>>> + val = 0; >>>> + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) >>>> + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); >>>> + /* the energy level scaled in 0x00 - 0xFF */ >>>> + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); >>>> + energy_level = (u8)val; >>>> + >>>> + if (energy_level >= 90) { >>>> + /* ED value is below minimum. Return 0x00. */ >>>> + energy_level = 0x00; >>>> + } else if (energy_level <= 26) { >>>> + /* ED value is above maximum. Return 0xFF. */ >>>> + energy_level = 0xFF; >>>> + } else { >>>> + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ >>>> + energy_level = (90 - energy_level); >>>> + energy_level <<= 2; >>>> + } >>>> + >>>> + *level = energy_level; >>>> + } else { >>>> + /* switch to IDLE at first */ >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>>> + MCR20A_XCVSEQ_IDLE); >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); >>> Nitpick. Typo in channel here. Might as well use __func__ :) >>> >> Correct. > > Are you going to sent a new version with this one fixed? > >>>> + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); >>>> + if (ret) >>>> + return ret; >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); >>>> + if (ret) >>>> + return ret; >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, >>>> + PLL_FRAC[channel - 11]); >>>> + if (ret) >>>> + return ret; >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_start(struct ieee802154_hw *hw) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* No slotted operation */ >>>> + dev_dbg(printdev(lp), "no slotted operation\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_SLOTTED, 0x0); >>>> + >>>> + /* enable irq */ >>>> + enable_irq(lp->spi->irq); >>>> + >>>> + /* Unmask SEQ interrupt */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, >>>> + DAR_PHY_CTRL2_SEQMSK, 0x0); >>>> + >>>> + /* Start the RX sequence */ >>>> + dev_dbg(printdev(lp), "start the RX sequence\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_stop(struct ieee802154_hw *hw) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* stop all running sequence */ >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>>> + >>>> + /* disable irq */ >>>> + disable_irq(lp->spi->irq); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, >>>> + struct ieee802154_hw_addr_filt *filt, >>>> + unsigned long changed) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { >>>> + u16 addr = le16_to_cpu(filt->short_addr); >>>> + >>>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); >>>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_PANID_CHANGED) { >>>> + u16 pan = le16_to_cpu(filt->pan_id); >>>> + >>>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); >>>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { >>>> + u8 addr[8], i; >>>> + >>>> + memcpy(addr, &filt->ieee_addr, 8); >>>> + for (i = 0; i < 8; i++) >>>> + regmap_write(lp->regmap_iar, >>>> + IAR_MACLONGADDRS0_0 + i, addr[i]); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_PANC_CHANGED) { >>>> + if (filt->pan_coord) { >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); >>>> + } else { >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); >>>> + } >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +/* -30 dBm to 10 dBm */ >>>> +#define MCR20A_MAX_TX_POWERS 0x14 >>>> +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { >>>> + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, >>>> + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 >>>> +}; >>>> + >>>> +static int >>>> +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + u32 i; >>>> + >>>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); >>>> + >>>> + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { >>>> + if (lp->hw->phy->supported.tx_powers[i] == mbm) >>>> + return regmap_write(lp->regmap_dar, DAR_PA_PWR, >>>> + ((i + 8) & 0x1F)); >>>> + } >>>> + >>>> + return -EINVAL; >>>> +} >>>> + >>>> +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD >>>> +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; >>>> + >>>> +static int >>>> +mcr20a_set_cca_mode(struct ieee802154_hw *hw, >>>> + const struct wpan_phy_cca *cca) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + unsigned int cca_mode = 0xff; >>>> + bool cca_mode_and = false; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* mapping 802.15.4 to driver spec */ >>>> + switch (cca->mode) { >>>> + case NL802154_CCA_ENERGY: >>>> + cca_mode = MCR20A_CCA_MODE1; >>>> + break; >>>> + case NL802154_CCA_CARRIER: >>>> + cca_mode = MCR20A_CCA_MODE2; >>>> + break; >>>> + case NL802154_CCA_ENERGY_CARRIER: >>>> + switch (cca->opt) { >>>> + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: >>>> + cca_mode = MCR20A_CCA_MODE3; >>>> + cca_mode_and = true; >>>> + break; >>>> + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: >>>> + cca_mode = MCR20A_CCA_MODE3; >>>> + cca_mode_and = false; >>>> + break; >>>> + default: >>>> + return -EINVAL; >>>> + } >>>> + break; >>>> + default: >>>> + return -EINVAL; >>>> + } >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_CCATYPE_MASK, >>>> + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + if (cca_mode == MCR20A_CCA_MODE3) { >>>> + if (cca_mode_and) { >>>> + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, >>>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>>> + 0x08); >>>> + } else { >>>> + ret = regmap_update_bits(lp->regmap_iar, >>>> + IAR_CCA_CTRL, >>>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>>> + 0x00); >>>> + } >>>> + if (ret < 0) >>>> + return ret; >>>> + } >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + u32 i; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { >>>> + if (hw->phy->supported.cca_ed_levels[i] == mbm) >>>> + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + u8 rx_frame_filter_reg = 0x0; >>>> + u8 val; >>>> + >>>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); >>>> + >>>> + if (on) { >>>> + /* All frame types accepted*/ >>>> + val |= DAR_PHY_CTRL4_PROMISCUOUS; >>>> + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); >>>> + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | >>>> + IAR_RX_FRAME_FLT_NS_FT); >>>> + >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PROMISCUOUS, >>>> + DAR_PHY_CTRL4_PROMISCUOUS); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + rx_frame_filter_reg); >>>> + if (ret < 0) >>>> + return ret; >>>> + } else { >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + IAR_RX_FRAME_FLT_FRM_VER | >>>> + IAR_RX_FRAME_FLT_BEACON_FT | >>>> + IAR_RX_FRAME_FLT_DATA_FT | >>>> + IAR_RX_FRAME_FLT_CMD_FT); >>>> + if (ret < 0) >>>> + return ret; >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static const struct ieee802154_ops mcr20a_hw_ops = { >>>> + .owner = THIS_MODULE, >>>> + .xmit_async = mcr20a_xmit, >>>> + .ed = mcr20a_ed, >>>> + .set_channel = mcr20a_set_channel, >>>> + .start = mcr20a_start, >>>> + .stop = mcr20a_stop, >>>> + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, >>>> + .set_txpower = mcr20a_set_txpower, >>>> + .set_cca_mode = mcr20a_set_cca_mode, >>>> + .set_cca_ed_level = mcr20a_set_cca_ed_level, >>>> + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, >>>> +}; >>>> + >>>> +static int >>>> +mcr20a_request_rx(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* Start the RX sequence */ >>>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_handle_rx_read_buf_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>>> + struct sk_buff *skb; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + dev_dbg(printdev(lp), "RX is done\n"); >>>> + >>>> + if (!ieee802154_is_valid_psdu_len(len)) { >>>> + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); >>>> + len = IEEE802154_MTU; >>>> + } >>>> + >>>> + len = len - 2; /* get rid of frame check field */ >>>> + >>>> + skb = dev_alloc_skb(len); >>>> + if (!skb) >>>> + return; >>>> + >>>> + memcpy(skb_put(skb, len), lp->rx_buf, len); >>>> + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); >>>> + >>>> +#ifdef DEBUG >>>> + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, >>>> + lp->rx_buf, len, 0); >>>> + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); >>>> +#endif >>> Here, as well as in the corresponding TX hex_dump call I wonder how to better >>> make use of it. Recompiling the driver to get the dump is not really nice. >>> Having a way to have this enabled during runtime might be better. And across >>> all drivers. Just thinking out loud here. Not saying you need to be he one >>> implementing it. What do you think? >>> >>> >> using module parameters may a solution. > > This would be an option but I was thinking more about towards a tracepoints like approach where we can dynamically enable or disable the > hexdump or other debug functionality. Loading and unloading the module to change this is a bit cumbersome. This code might not even be a > module at all but compiled in. > > I need to check what the kernel infra offers here and how other subsystems use it. > >>>> + /* start RX sequence */ >>>> + mcr20a_request_rx(lp); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_handle_rx_read_len_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 len; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* get the length of received frame */ >>>> + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>>> + dev_dbg(printdev(lp), "frame len : %d\n", len); >>>> + >>>> + /* prepare to read the rx buf */ >>>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>>> + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; >>>> + lp->rx_xfer_buf.len = len; >>>> + >>>> + ret = spi_async(lp->spi, &lp->rx_buf_msg); >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to read rx buffer length\n"); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_rx(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; >>>> + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + return spi_async(lp->spi, &lp->reg_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_tx_complete(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); >>>> + >>>> + return mcr20a_request_rx(lp); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_tx(struct mcr20a_local *lp) >>>> +{ >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* write tx buffer */ >>>> + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; >>>> + /* add 2 bytes of FCS */ >>>> + lp->tx_len[0] = lp->tx_skb->len + 2; >>>> + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; >>>> + /* add 1 byte psduLength */ >>>> + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; >>>> + >>>> + ret = spi_async(lp->spi, &lp->tx_buf_msg); >>>> + if (ret) { >>>> + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); >>>> + return ret; >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_irq_clean_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + enable_irq(lp->spi->irq); >>>> + >>>> + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", >>>> + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); >>>> + >>>> + switch (seq_state) { >>>> + /* TX IRQ, RX IRQ and SEQ IRQ */ >>>> + case (0x03): >>>> + if (lp->is_tx) { >>>> + lp->is_tx = 0; >>>> + dev_dbg(printdev(lp), "TX is done. No ACK\n"); >>>> + mcr20a_handle_tx_complete(lp); >>>> + } >>>> + break; >>>> + case (0x05): >>>> + /* rx is starting */ >>>> + dev_dbg(printdev(lp), "RX is starting\n"); >>>> + mcr20a_handle_rx(lp); >>>> + break; >>>> + case (0x07): >>>> + if (lp->is_tx) { >>>> + /* tx is done */ >>>> + lp->is_tx = 0; >>>> + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); >>>> + mcr20a_handle_tx_complete(lp); >>>> + } else { >>>> + /* rx is starting */ >>>> + dev_dbg(printdev(lp), "RX is starting\n"); >>>> + mcr20a_handle_rx(lp); >>>> + } >>>> + break; >>>> + case (0x01): >>>> + if (lp->is_tx) { >>>> + dev_dbg(printdev(lp), "TX is starting\n"); >>>> + mcr20a_handle_tx(lp); >>>> + } else { >>>> + dev_dbg(printdev(lp), "MCR20A is stop\n"); >>>> + } >>>> + break; >>>> + } >>>> +} >>>> + >>>> +static void mcr20a_irq_status_complete(void *context) >>>> +{ >>>> + int ret; >>>> + struct mcr20a_local *lp = context; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>>> + >>>> + lp->reg_msg.complete = mcr20a_irq_clean_complete; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); >>>> + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); >>>> + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; >>>> + >>>> + ret = spi_async(lp->spi, &lp->reg_msg); >>>> + >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to clean irq status\n"); >>>> +} >>>> + >>>> +static irqreturn_t mcr20a_irq_isr(int irq, void *data) >>>> +{ >>>> + struct mcr20a_local *lp = data; >>>> + int ret; >>>> + >>>> + disable_irq_nosync(irq); >>>> + >>>> + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); >>>> + /* read IRQSTSx */ >>>> + ret = spi_async(lp->spi, &lp->irq_msg); >>>> + if (ret) { >>>> + enable_irq(irq); >>>> + return IRQ_NONE; >>>> + } >>>> + >>>> + return IRQ_HANDLED; >>>> +} >>>> + >>>> +static int mcr20a_get_platform_data(struct spi_device *spi, >>>> + struct mcr20a_platform_data *pdata) >>>> +{ >>>> + int ret = 0; >>>> + >>>> + if (!spi->dev.of_node) >>>> + return -EINVAL; >>>> + >>>> + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); >>>> + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static void mcr20a_hw_setup(struct mcr20a_local *lp) >>>> +{ >>>> + u8 i; >>>> + struct ieee802154_hw *hw = lp->hw; >>>> + struct wpan_phy *phy = lp->hw->phy; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + phy->symbol_duration = 16; >>>> + phy->lifs_period = 40; >>>> + phy->sifs_period = 12; >>>> + >>>> + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | >>>> + IEEE802154_HW_AFILT | >>>> + IEEE802154_HW_PROMISCUOUS; >>>> + >>>> + phy->flags = WPAN_PHY_FLAG_TXPOWER | >>>> + WPAN_PHY_FLAG_CCA_ED_LEVEL | >>>> + WPAN_PHY_FLAG_CCA_MODE; >>>> + >>>> + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | >>>> + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); >>>> + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | >>>> + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); >>>> + >>>> + /* initiating cca_ed_levels */ >>>> + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; >>>> + ++i) { >>>> + mcr20a_ed_levels[i] = -i * 100; >>>> + } >>>> + >>>> + phy->supported.cca_ed_levels = mcr20a_ed_levels; >>>> + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); >>>> + >>>> + phy->cca.mode = NL802154_CCA_ENERGY; >>>> + >>>> + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; >>>> + phy->current_page = 0; >>>> + /* MCR20A default reset value */ >>>> + phy->current_channel = 20; >>>> + phy->symbol_duration = 16; >>>> + phy->supported.tx_powers = mcr20a_powers; >>>> + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); >>>> + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; >>>> + phy->transmit_power = phy->supported.tx_powers[0x0F]; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->tx_buf_msg); >>>> + lp->tx_buf_msg.context = lp; >>>> + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; >>>> + >>>> + lp->tx_xfer_header.len = 1; >>>> + lp->tx_xfer_header.tx_buf = lp->tx_header; >>>> + >>>> + lp->tx_xfer_len.len = 1; >>>> + lp->tx_xfer_len.tx_buf = lp->tx_len; >>>> + >>>> + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); >>>> + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); >>>> + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->reg_msg); >>>> + lp->reg_msg.context = lp; >>>> + >>>> + lp->reg_xfer_cmd.len = 1; >>>> + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; >>>> + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; >>>> + >>>> + lp->reg_xfer_data.rx_buf = lp->reg_data; >>>> + lp->reg_xfer_data.tx_buf = lp->reg_data; >>>> + >>>> + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); >>>> + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); >>>> + >>>> + spi_message_init(&lp->rx_buf_msg); >>>> + lp->rx_buf_msg.context = lp; >>>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>>> + lp->rx_xfer_header.len = 1; >>>> + lp->rx_xfer_header.tx_buf = lp->rx_header; >>>> + lp->rx_xfer_header.rx_buf = lp->rx_header; >>>> + >>>> + lp->rx_xfer_buf.rx_buf = lp->rx_buf; >>>> + >>>> + lp->rx_xfer_lqi.len = 1; >>>> + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; >>>> + >>>> + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); >>>> + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); >>>> + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->irq_msg); >>>> + lp->irq_msg.context = lp; >>>> + lp->irq_msg.complete = mcr20a_irq_status_complete; >>>> + lp->irq_xfer_header.len = 1; >>>> + lp->irq_xfer_header.tx_buf = lp->irq_header; >>>> + lp->irq_xfer_header.rx_buf = lp->irq_header; >>>> + >>>> + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; >>>> + lp->irq_xfer_data.rx_buf = lp->irq_data; >>>> + >>>> + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); >>>> + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_phy_init(struct mcr20a_local *lp) >>>> +{ >>>> + u8 index; >>>> + unsigned int phy_reg = 0; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* Disable Tristate on COCO MISO for SPI reads */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts >>>> + * immediately after init >>>> + */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear all PP IRQ bits in IRQSTS2 */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, >>>> + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | >>>> + DAR_IRQSTS2_WAKE_IRQ); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Disable all timer interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); >>>> + >>>> + /* PHY_CTRL2 : disable all interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* PHY_CTRL3 : disable all timers and remaining interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, >>>> + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | >>>> + DAR_PHY_CTRL3_WAKE_MSK); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* SRC_CTRL : enable Acknowledge Frame Pending and >>>> + * Source Address Matching Enable >>>> + */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, >>>> + DAR_SRC_CTRL_ACK_FRM_PND | >>>> + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* RX_FRAME_FILTER */ >>>> + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + IAR_RX_FRAME_FLT_FRM_VER | >>>> + IAR_RX_FRAME_FLT_BEACON_FT | >>>> + IAR_RX_FRAME_FLT_DATA_FT | >>>> + IAR_RX_FRAME_FLT_CMD_FT); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + dev_info(printdev(lp), "overwrites version: 0x%02x\n", >>>> + MCR20A_OVERWRITE_VERSION); >>>> + >>>> + /* Overwrites direct registers */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, >>>> + MCR20A_OVERWRITE_VERSION); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Overwrites indirect registers */ >>>> + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, >>>> + ARRAY_SIZE(mar20a_iar_overwrites)); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear HW indirect queue */ >>>> + dev_dbg(printdev(lp), "clear HW indirect queue\n"); >>>> + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { >>>> + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << >>>> + DAR_SRC_CTRL_INDEX_SHIFT) >>>> + | (DAR_SRC_CTRL_SRCADDR_EN) >>>> + | (DAR_SRC_CTRL_INDEX_DISABLE)); >>>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + phy_reg = 0; >>>> + } >>>> + >>>> + /* Assign HW Indirect hash table to PAN0 */ >>>> + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear current lvl */ >>>> + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; >>>> + >>>> + /* Set new lvl */ >>>> + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << >>>> + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; >>>> + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* set CCA threshold to -75 dBm */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* set prescaller to obtain 1 symbol (16us) timebase */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* enable autodoze mode. */ >>>> + dev_dbg(printdev(lp), "enable autodoze mode\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, >>>> + DAR_PWR_MODES_AUTODOZE, >>>> + DAR_PWR_MODES_AUTODOZE); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* disable clk_out */ >>>> + dev_dbg(printdev(lp), "disable clk_out\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, >>>> + DAR_CLK_OUT_CTRL_EN, 0x0); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + return 0; >>>> + >>>> +err_ret: >>>> + return ret; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_probe(struct spi_device *spi) >>>> +{ >>>> + struct ieee802154_hw *hw; >>>> + struct mcr20a_local *lp; >>>> + struct mcr20a_platform_data *pdata; >>>> + int irq_type; >>>> + int ret = -ENOMEM; >>>> + >>>> + dev_dbg(&spi->dev, "%s\n", __func__); >>>> + >>>> + if (!spi->irq) { >>>> + dev_err(&spi->dev, "no IRQ specified\n"); >>>> + return -EINVAL; >>>> + } >>>> + >>>> + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); >>>> + if (!pdata) >>>> + return -ENOMEM; >>>> + >>>> + /* set mcr20a platform data */ >>>> + ret = mcr20a_get_platform_data(spi, pdata); >>>> + if (ret < 0) { >>>> + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); >>>> + return ret; >>>> + } >>>> + >>>> + /* init reset gpio */ >>>> + if (gpio_is_valid(pdata->rst_gpio)) { >>>> + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, >>>> + GPIOF_OUT_INIT_HIGH, "reset"); >>>> + if (ret) >>>> + return ret; >>>> + } >>>> + >>>> + /* reset mcr20a */ >>>> + if (gpio_is_valid(pdata->rst_gpio)) { >>>> + usleep_range(10, 20); >>>> + gpio_set_value_cansleep(pdata->rst_gpio, 0); >>>> + usleep_range(10, 20); >>>> + gpio_set_value_cansleep(pdata->rst_gpio, 1); >>>> + usleep_range(120, 240); >>>> + } >>>> + >>>> + /* allocate ieee802154_hw and private data */ >>>> + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); >>>> + if (!hw) { >>>> + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); >>>> + return -ENOMEM; >>>> + } >>>> + >>>> + /* init mcr20a local data */ >>>> + lp = hw->priv; >>>> + lp->hw = hw; >>>> + lp->spi = spi; >>>> + lp->spi->dev.platform_data = pdata; >>>> + lp->pdata = pdata; >>>> + >>>> + /* init ieee802154_hw */ >>>> + hw->parent = &spi->dev; >>>> + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); >>>> + >>>> + /* init buf */ >>>> + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); >>>> + >>>> + if (!lp->buf) >>>> + return -ENOMEM; >>>> + >>>> + mcr20a_setup_tx_spi_messages(lp); >>>> + mcr20a_setup_rx_spi_messages(lp); >>>> + mcr20a_setup_irq_spi_messages(lp); >>>> + >>>> + /* setup regmap */ >>>> + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); >>>> + if (IS_ERR(lp->regmap_dar)) { >>>> + ret = PTR_ERR(lp->regmap_dar); >>>> + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", >>>> + ret); >>>> + goto free_dev; >>>> + } >>>> + >>>> + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); >>>> + if (IS_ERR(lp->regmap_iar)) { >>>> + ret = PTR_ERR(lp->regmap_iar); >>>> + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); >>>> + goto free_dev; >>>> + } >>>> + >>>> + mcr20a_hw_setup(lp); >>>> + >>>> + spi_set_drvdata(spi, lp); >>>> + >>>> + ret = mcr20a_phy_init(lp); >>>> + if (ret < 0) { >>>> + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); >>>> + goto free_dev; >>>> + } >>>> + >>>> + irq_type = irq_get_trigger_type(spi->irq); >>>> + if (!irq_type) >>>> + irq_type = IRQF_TRIGGER_FALLING; >>>> + >>>> + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, >>>> + irq_type, dev_name(&spi->dev), lp); >>>> + if (ret) { >>>> + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); >>>> + ret = -ENODEV; >>>> + goto free_dev; >>>> + } >>>> + >>>> + /* disable_irq by default and wait for starting hardware */ >>>> + disable_irq(spi->irq); >>>> + >>>> + ret = ieee802154_register_hw(hw); >>>> + if (ret) { >>>> + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); >>>> + goto free_dev; >>>> + } >>>> + >>>> + return ret; >>>> + >>>> +free_dev: >>>> + ieee802154_free_hw(lp->hw); >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static int mcr20a_remove(struct spi_device *spi) >>>> +{ >>>> + struct mcr20a_local *lp = spi_get_drvdata(spi); >>>> + >>>> + dev_dbg(&spi->dev, "%s\n", __func__); >>>> + >>>> + ieee802154_unregister_hw(lp->hw); >>>> + ieee802154_free_hw(lp->hw); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static const struct of_device_id mcr20a_of_match[] = { >>>> + { .compatible = "nxp,mcr20a", }, >>>> + { }, >>>> +}; >>>> +MODULE_DEVICE_TABLE(of, mcr20a_of_match); >>>> + >>>> +static const struct spi_device_id mcr20a_device_id[] = { >>>> + { .name = "mcr20a", }, >>>> + { }, >>>> +}; >>>> +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); >>>> + >>>> +static struct spi_driver mcr20a_driver = { >>>> + .id_table = mcr20a_device_id, >>>> + .driver = { >>>> + .of_match_table = of_match_ptr(mcr20a_of_match), >>>> + .name = "mcr20a", >>>> + }, >>>> + .probe = mcr20a_probe, >>>> + .remove = mcr20a_remove, >>>> +}; >>>> + >>>> +module_spi_driver(mcr20a_driver); >>>> + >>>> +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); >>>> +MODULE_LICENSE("GPL v2"); >>>> +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); >>>> diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h >>>> new file mode 100644 >>>> index 0000000..6da4fd0 >>>> --- /dev/null >>>> +++ b/drivers/net/ieee802154/mcr20a.h >>>> @@ -0,0 +1,498 @@ >>>> +/* >>>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>>> + * >>>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>>> + * >>>> + * This program is free software; you can redistribute it and/or modify >>>> + * it under the terms of the GNU General Public License version 2 >>>> + * as published by the Free Software Foundation. >>>> + * >>>> + * This program is distributed in the hope that it will be useful, >>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>>> + * GNU General Public License for more details. >>>> + * >>>> + */ >>>> +#ifndef _MCR20A_H >>>> +#define _MCR20A_H >>>> + >>>> +/* Direct Accress Register */ >>>> +#define DAR_IRQ_STS1 0x00 >>>> +#define DAR_IRQ_STS2 0x01 >>>> +#define DAR_IRQ_STS3 0x02 >>>> +#define DAR_PHY_CTRL1 0x03 >>>> +#define DAR_PHY_CTRL2 0x04 >>>> +#define DAR_PHY_CTRL3 0x05 >>>> +#define DAR_RX_FRM_LEN 0x06 >>>> +#define DAR_PHY_CTRL4 0x07 >>>> +#define DAR_SRC_CTRL 0x08 >>>> +#define DAR_SRC_ADDRS_SUM_LSB 0x09 >>>> +#define DAR_SRC_ADDRS_SUM_MSB 0x0A >>>> +#define DAR_CCA1_ED_FNL 0x0B >>>> +#define DAR_EVENT_TMR_LSB 0x0C >>>> +#define DAR_EVENT_TMR_MSB 0x0D >>>> +#define DAR_EVENT_TMR_USB 0x0E >>>> +#define DAR_TIMESTAMP_LSB 0x0F >>>> +#define DAR_TIMESTAMP_MSB 0x10 >>>> +#define DAR_TIMESTAMP_USB 0x11 >>>> +#define DAR_T3CMP_LSB 0x12 >>>> +#define DAR_T3CMP_MSB 0x13 >>>> +#define DAR_T3CMP_USB 0x14 >>>> +#define DAR_T2PRIMECMP_LSB 0x15 >>>> +#define DAR_T2PRIMECMP_MSB 0x16 >>>> +#define DAR_T1CMP_LSB 0x17 >>>> +#define DAR_T1CMP_MSB 0x18 >>>> +#define DAR_T1CMP_USB 0x19 >>>> +#define DAR_T2CMP_LSB 0x1A >>>> +#define DAR_T2CMP_MSB 0x1B >>>> +#define DAR_T2CMP_USB 0x1C >>>> +#define DAR_T4CMP_LSB 0x1D >>>> +#define DAR_T4CMP_MSB 0x1E >>>> +#define DAR_T4CMP_USB 0x1F >>>> +#define DAR_PLL_INT0 0x20 >>>> +#define DAR_PLL_FRAC0_LSB 0x21 >>>> +#define DAR_PLL_FRAC0_MSB 0x22 >>>> +#define DAR_PA_PWR 0x23 >>>> +#define DAR_SEQ_STATE 0x24 >>>> +#define DAR_LQI_VALUE 0x25 >>>> +#define DAR_RSSI_CCA_CONT 0x26 >>>> +/*------------------ 0x27 */ >>>> +#define DAR_ASM_CTRL1 0x28 >>>> +#define DAR_ASM_CTRL2 0x29 >>>> +#define DAR_ASM_DATA_0 0x2A >>>> +#define DAR_ASM_DATA_1 0x2B >>>> +#define DAR_ASM_DATA_2 0x2C >>>> +#define DAR_ASM_DATA_3 0x2D >>>> +#define DAR_ASM_DATA_4 0x2E >>>> +#define DAR_ASM_DATA_5 0x2F >>>> +#define DAR_ASM_DATA_6 0x30 >>>> +#define DAR_ASM_DATA_7 0x31 >>>> +#define DAR_ASM_DATA_8 0x32 >>>> +#define DAR_ASM_DATA_9 0x33 >>>> +#define DAR_ASM_DATA_A 0x34 >>>> +#define DAR_ASM_DATA_B 0x35 >>>> +#define DAR_ASM_DATA_C 0x36 >>>> +#define DAR_ASM_DATA_D 0x37 >>>> +#define DAR_ASM_DATA_E 0x38 >>>> +#define DAR_ASM_DATA_F 0x39 >>>> +/*----------------------- 0x3A */ >>>> +#define DAR_OVERWRITE_VER 0x3B >>>> +#define DAR_CLK_OUT_CTRL 0x3C >>>> +#define DAR_PWR_MODES 0x3D >>>> +#define IAR_INDEX 0x3E >>>> +#define IAR_DATA 0x3F >>>> + >>>> +/* Indirect Resgister Memory */ >>>> +#define IAR_PART_ID 0x00 >>>> +#define IAR_XTAL_TRIM 0x01 >>>> +#define IAR_PMC_LP_TRIM 0x02 >>>> +#define IAR_MACPANID0_LSB 0x03 >>>> +#define IAR_MACPANID0_MSB 0x04 >>>> +#define IAR_MACSHORTADDRS0_LSB 0x05 >>>> +#define IAR_MACSHORTADDRS0_MSB 0x06 >>>> +#define IAR_MACLONGADDRS0_0 0x07 >>>> +#define IAR_MACLONGADDRS0_8 0x08 >>>> +#define IAR_MACLONGADDRS0_16 0x09 >>>> +#define IAR_MACLONGADDRS0_24 0x0A >>>> +#define IAR_MACLONGADDRS0_32 0x0B >>>> +#define IAR_MACLONGADDRS0_40 0x0C >>>> +#define IAR_MACLONGADDRS0_48 0x0D >>>> +#define IAR_MACLONGADDRS0_56 0x0E >>>> +#define IAR_RX_FRAME_FILTER 0x0F >>>> +#define IAR_PLL_INT1 0x10 >>>> +#define IAR_PLL_FRAC1_LSB 0x11 >>>> +#define IAR_PLL_FRAC1_MSB 0x12 >>>> +#define IAR_MACPANID1_LSB 0x13 >>>> +#define IAR_MACPANID1_MSB 0x14 >>>> +#define IAR_MACSHORTADDRS1_LSB 0x15 >>>> +#define IAR_MACSHORTADDRS1_MSB 0x16 >>>> +#define IAR_MACLONGADDRS1_0 0x17 >>>> +#define IAR_MACLONGADDRS1_8 0x18 >>>> +#define IAR_MACLONGADDRS1_16 0x19 >>>> +#define IAR_MACLONGADDRS1_24 0x1A >>>> +#define IAR_MACLONGADDRS1_32 0x1B >>>> +#define IAR_MACLONGADDRS1_40 0x1C >>>> +#define IAR_MACLONGADDRS1_48 0x1D >>>> +#define IAR_MACLONGADDRS1_56 0x1E >>>> +#define IAR_DUAL_PAN_CTRL 0x1F >>>> +#define IAR_DUAL_PAN_DWELL 0x20 >>>> +#define IAR_DUAL_PAN_STS 0x21 >>>> +#define IAR_CCA1_THRESH 0x22 >>>> +#define IAR_CCA1_ED_OFFSET_COMP 0x23 >>>> +#define IAR_LQI_OFFSET_COMP 0x24 >>>> +#define IAR_CCA_CTRL 0x25 >>>> +#define IAR_CCA2_CORR_PEAKS 0x26 >>>> +#define IAR_CCA2_CORR_THRESH 0x27 >>>> +#define IAR_TMR_PRESCALE 0x28 >>>> +/*-------------------- 0x29 */ >>>> +#define IAR_GPIO_DATA 0x2A >>>> +#define IAR_GPIO_DIR 0x2B >>>> +#define IAR_GPIO_PUL_EN 0x2C >>>> +#define IAR_GPIO_PUL_SEL 0x2D >>>> +#define IAR_GPIO_DS 0x2E >>>> +/*------------------ 0x2F */ >>>> +#define IAR_ANT_PAD_CTRL 0x30 >>>> +#define IAR_MISC_PAD_CTRL 0x31 >>>> +#define IAR_BSM_CTRL 0x32 >>>> +/*------------------- 0x33 */ >>>> +#define IAR_RNG 0x34 >>>> +#define IAR_RX_BYTE_COUNT 0x35 >>>> +#define IAR_RX_WTR_MARK 0x36 >>>> +#define IAR_SOFT_RESET 0x37 >>>> +#define IAR_TXDELAY 0x38 >>>> +#define IAR_ACKDELAY 0x39 >>>> +#define IAR_SEQ_MGR_CTRL 0x3A >>>> +#define IAR_SEQ_MGR_STS 0x3B >>>> +#define IAR_SEQ_T_STS 0x3C >>>> +#define IAR_ABORT_STS 0x3D >>>> +#define IAR_CCCA_BUSY_CNT 0x3E >>>> +#define IAR_SRC_ADDR_CHECKSUM1 0x3F >>>> +#define IAR_SRC_ADDR_CHECKSUM2 0x40 >>>> +#define IAR_SRC_TBL_VALID1 0x41 >>>> +#define IAR_SRC_TBL_VALID2 0x42 >>>> +#define IAR_FILTERFAIL_CODE1 0x43 >>>> +#define IAR_FILTERFAIL_CODE2 0x44 >>>> +#define IAR_SLOT_PRELOAD 0x45 >>>> +/*-------------------- 0x46 */ >>>> +#define IAR_CORR_VT 0x47 >>>> +#define IAR_SYNC_CTRL 0x48 >>>> +#define IAR_PN_LSB_0 0x49 >>>> +#define IAR_PN_LSB_1 0x4A >>>> +#define IAR_PN_MSB_0 0x4B >>>> +#define IAR_PN_MSB_1 0x4C >>>> +#define IAR_CORR_NVAL 0x4D >>>> +#define IAR_TX_MODE_CTRL 0x4E >>>> +#define IAR_SNF_THR 0x4F >>>> +#define IAR_FAD_THR 0x50 >>>> +#define IAR_ANT_AGC_CTRL 0x51 >>>> +#define IAR_AGC_THR1 0x52 >>>> +#define IAR_AGC_THR2 0x53 >>>> +#define IAR_AGC_HYS 0x54 >>>> +#define IAR_AFC 0x55 >>>> +/*------------------- 0x56 */ >>>> +/*------------------- 0x57 */ >>>> +#define IAR_PHY_STS 0x58 >>>> +#define IAR_RX_MAX_CORR 0x59 >>>> +#define IAR_RX_MAX_PREAMBLE 0x5A >>>> +#define IAR_RSSI 0x5B >>>> +/*------------------- 0x5C */ >>>> +/*------------------- 0x5D */ >>>> +#define IAR_PLL_DIG_CTRL 0x5E >>>> +#define IAR_VCO_CAL 0x5F >>>> +#define IAR_VCO_BEST_DIFF 0x60 >>>> +#define IAR_VCO_BIAS 0x61 >>>> +#define IAR_KMOD_CTRL 0x62 >>>> +#define IAR_KMOD_CAL 0x63 >>>> +#define IAR_PA_CAL 0x64 >>>> +#define IAR_PA_PWRCAL 0x65 >>>> +#define IAR_ATT_RSSI1 0x66 >>>> +#define IAR_ATT_RSSI2 0x67 >>>> +#define IAR_RSSI_OFFSET 0x68 >>>> +#define IAR_RSSI_SLOPE 0x69 >>>> +#define IAR_RSSI_CAL1 0x6A >>>> +#define IAR_RSSI_CAL2 0x6B >>>> +/*------------------- 0x6C */ >>>> +/*------------------- 0x6D */ >>>> +#define IAR_XTAL_CTRL 0x6E >>>> +#define IAR_XTAL_COMP_MIN 0x6F >>>> +#define IAR_XTAL_COMP_MAX 0x70 >>>> +#define IAR_XTAL_GM 0x71 >>>> +/*------------------- 0x72 */ >>>> +/*------------------- 0x73 */ >>>> +#define IAR_LNA_TUNE 0x74 >>>> +#define IAR_LNA_AGCGAIN 0x75 >>>> +/*------------------- 0x76 */ >>>> +/*------------------- 0x77 */ >>>> +#define IAR_CHF_PMA_GAIN 0x78 >>>> +#define IAR_CHF_IBUF 0x79 >>>> +#define IAR_CHF_QBUF 0x7A >>>> +#define IAR_CHF_IRIN 0x7B >>>> +#define IAR_CHF_QRIN 0x7C >>>> +#define IAR_CHF_IL 0x7D >>>> +#define IAR_CHF_QL 0x7E >>>> +#define IAR_CHF_CC1 0x7F >>>> +#define IAR_CHF_CCL 0x80 >>>> +#define IAR_CHF_CC2 0x81 >>>> +#define IAR_CHF_IROUT 0x82 >>>> +#define IAR_CHF_QROUT 0x83 >>>> +/*------------------- 0x84 */ >>>> +/*------------------- 0x85 */ >>>> +#define IAR_RSSI_CTRL 0x86 >>>> +/*------------------- 0x87 */ >>>> +/*------------------- 0x88 */ >>>> +#define IAR_PA_BIAS 0x89 >>>> +#define IAR_PA_TUNING 0x8A >>>> +/*------------------- 0x8B */ >>>> +/*------------------- 0x8C */ >>>> +#define IAR_PMC_HP_TRIM 0x8D >>>> +#define IAR_VREGA_TRIM 0x8E >>>> +/*------------------- 0x8F */ >>>> +/*------------------- 0x90 */ >>>> +#define IAR_VCO_CTRL1 0x91 >>>> +#define IAR_VCO_CTRL2 0x92 >>>> +/*------------------- 0x93 */ >>>> +/*------------------- 0x94 */ >>>> +#define IAR_ANA_SPARE_OUT1 0x95 >>>> +#define IAR_ANA_SPARE_OUT2 0x96 >>>> +#define IAR_ANA_SPARE_IN 0x97 >>>> +#define IAR_MISCELLANEOUS 0x98 >>>> +/*------------------- 0x99 */ >>>> +#define IAR_SEQ_MGR_OVRD0 0x9A >>>> +#define IAR_SEQ_MGR_OVRD1 0x9B >>>> +#define IAR_SEQ_MGR_OVRD2 0x9C >>>> +#define IAR_SEQ_MGR_OVRD3 0x9D >>>> +#define IAR_SEQ_MGR_OVRD4 0x9E >>>> +#define IAR_SEQ_MGR_OVRD5 0x9F >>>> +#define IAR_SEQ_MGR_OVRD6 0xA0 >>>> +#define IAR_SEQ_MGR_OVRD7 0xA1 >>>> +/*------------------- 0xA2 */ >>>> +#define IAR_TESTMODE_CTRL 0xA3 >>>> +#define IAR_DTM_CTRL1 0xA4 >>>> +#define IAR_DTM_CTRL2 0xA5 >>>> +#define IAR_ATM_CTRL1 0xA6 >>>> +#define IAR_ATM_CTRL2 0xA7 >>>> +#define IAR_ATM_CTRL3 0xA8 >>>> +/*------------------- 0xA9 */ >>>> +#define IAR_LIM_FE_TEST_CTRL 0xAA >>>> +#define IAR_CHF_TEST_CTRL 0xAB >>>> +#define IAR_VCO_TEST_CTRL 0xAC >>>> +#define IAR_PLL_TEST_CTRL 0xAD >>>> +#define IAR_PA_TEST_CTRL 0xAE >>>> +#define IAR_PMC_TEST_CTRL 0xAF >>>> +#define IAR_SCAN_DTM_PROTECT_1 0xFE >>>> +#define IAR_SCAN_DTM_PROTECT_0 0xFF >>>> + >>>> +/* IRQSTS1 bits */ >>>> +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) >>>> +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) >>>> +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) >>>> +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) >>>> +#define DAR_IRQSTS1_CCAIRQ BIT(3) >>>> +#define DAR_IRQSTS1_RXIRQ BIT(2) >>>> +#define DAR_IRQSTS1_TXIRQ BIT(1) >>>> +#define DAR_IRQSTS1_SEQIRQ BIT(0) >>>> + >>>> +/* IRQSTS2 bits */ >>>> +#define DAR_IRQSTS2_CRCVALID BIT(7) >>>> +#define DAR_IRQSTS2_CCA BIT(6) >>>> +#define DAR_IRQSTS2_SRCADDR BIT(5) >>>> +#define DAR_IRQSTS2_PI BIT(4) >>>> +#define DAR_IRQSTS2_TMRSTATUS BIT(3) >>>> +#define DAR_IRQSTS2_ASM_IRQ BIT(2) >>>> +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) >>>> +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) >>>> + >>>> +/* IRQSTS3 bits */ >>>> +#define DAR_IRQSTS3_TMR4MSK BIT(7) >>>> +#define DAR_IRQSTS3_TMR3MSK BIT(6) >>>> +#define DAR_IRQSTS3_TMR2MSK BIT(5) >>>> +#define DAR_IRQSTS3_TMR1MSK BIT(4) >>>> +#define DAR_IRQSTS3_TMR4IRQ BIT(3) >>>> +#define DAR_IRQSTS3_TMR3IRQ BIT(2) >>>> +#define DAR_IRQSTS3_TMR2IRQ BIT(1) >>>> +#define DAR_IRQSTS3_TMR1IRQ BIT(0) >>>> + >>>> +/* PHY_CTRL1 bits */ >>>> +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) >>>> +#define DAR_PHY_CTRL1_SLOTTED BIT(6) >>>> +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) >>>> +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 >>>> +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) >>>> +#define DAR_PHY_CTRL1_AUTOACK BIT(3) >>>> +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 >>>> + >>>> +/* PHY_CTRL2 bits */ >>>> +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) >>>> +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) >>>> +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) >>>> +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) >>>> +#define DAR_PHY_CTRL2_CCAMSK BIT(3) >>>> +#define DAR_PHY_CTRL2_RXMSK BIT(2) >>>> +#define DAR_PHY_CTRL2_TXMSK BIT(1) >>>> +#define DAR_PHY_CTRL2_SEQMSK BIT(0) >>>> + >>>> +/* PHY_CTRL3 bits */ >>>> +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) >>>> +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) >>>> +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) >>>> +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) >>>> +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) >>>> +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) >>>> +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) >>>> + >>>> +/* RX_FRM_LEN bits */ >>>> +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) >>>> + >>>> +/* PHY_CTRL4 bits */ >>>> +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) >>>> +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) >>>> +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) >>>> +#define DAR_PHY_CTRL4_CCATYPE (3) >>>> +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) >>>> +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) >>>> +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) >>>> +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) >>>> +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) >>>> + >>>> +/* SRC_CTRL bits */ >>>> +#define DAR_SRC_CTRL_INDEX (0x0F) >>>> +#define DAR_SRC_CTRL_INDEX_SHIFT (4) >>>> +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) >>>> +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) >>>> +#define DAR_SRC_CTRL_INDEX_EN BIT(1) >>>> +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) >>>> + >>>> +/* DAR_ASM_CTRL1 bits */ >>>> +#define DAR_ASM_CTRL1_CLEAR BIT(7) >>>> +#define DAR_ASM_CTRL1_START BIT(6) >>>> +#define DAR_ASM_CTRL1_SELFTST BIT(5) >>>> +#define DAR_ASM_CTRL1_CTR BIT(4) >>>> +#define DAR_ASM_CTRL1_CBC BIT(3) >>>> +#define DAR_ASM_CTRL1_AES BIT(2) >>>> +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) >>>> + >>>> +/* DAR_ASM_CTRL2 bits */ >>>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) >>>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) >>>> +#define DAR_ASM_CTRL2_TSTPAS BIT(1) >>>> + >>>> +/* DAR_CLK_OUT_CTRL bits */ >>>> +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) >>>> +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) >>>> +#define DAR_CLK_OUT_CTRL_SR BIT(5) >>>> +#define DAR_CLK_OUT_CTRL_DS BIT(4) >>>> +#define DAR_CLK_OUT_CTRL_EN BIT(3) >>>> +#define DAR_CLK_OUT_CTRL_DIV (7) >>>> + >>>> +/* DAR_PWR_MODES bits */ >>>> +#define DAR_PWR_MODES_XTAL_READY BIT(5) >>>> +#define DAR_PWR_MODES_XTALEN BIT(4) >>>> +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) >>>> +#define DAR_PWR_MODES_AUTODOZE BIT(1) >>>> +#define DAR_PWR_MODES_PMC_MODE BIT(0) >>>> + >>>> +/* RX_FRAME_FILTER bits */ >>>> +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) >>>> +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) >>>> +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) >>>> +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) >>>> +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) >>>> +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) >>>> +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) >>>> +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) >>>> + >>>> +/* DUAL_PAN_CTRL bits */ >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) >>>> +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) >>>> +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) >>>> +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) >>>> + >>>> +/* DUAL_PAN_STS bits */ >>>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) >>>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) >>>> +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) >>>> + >>>> +/* CCA_CTRL bits */ >>>> +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) >>>> +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) >>>> +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) >>>> +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) >>>> + >>>> +/* ANT_PAD_CTRL bits */ >>>> +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) >>>> + >>>> +/* MISC_PAD_CTRL bits */ >>>> +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) >>>> +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) >>>> +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) >>>> +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) >>>> + >>>> +/* ANT_AGC_CTRL bits */ >>>> +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) >>>> +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) >>>> +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) >>>> +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) >>>> + >>>> +/* BSM_CTRL bits */ >>>> +#define BSM_CTRL_BSM_EN (1) >>>> + >>>> +/* SOFT_RESET bits */ >>>> +#define IAR_SOFT_RESET_SOG_RST BIT(7) >>>> +#define IAR_SOFT_RESET_REGS_RST BIT(4) >>>> +#define IAR_SOFT_RESET_PLL_RST BIT(3) >>>> +#define IAR_SOFT_RESET_TX_RST BIT(2) >>>> +#define IAR_SOFT_RESET_RX_RST BIT(1) >>>> +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) >>>> + >>>> +/* SEQ_MGR_CTRL bits */ >>>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) >>>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) >>>> +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) >>>> +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) >>>> +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) >>>> +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) >>>> +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) >>>> +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) >>>> + >>>> +/* SEQ_MGR_STS bits */ >>>> +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) >>>> +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) >>>> +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) >>>> +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) >>>> +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) >>>> +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) >>>> + >>>> +/* ABORT_STS bits */ >>>> +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) >>>> +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) >>>> +#define IAR_ABORT_STS_SW_ABORTED BIT(0) >>>> + >>>> +/* IAR_FILTERFAIL_CODE2 bits */ >>>> +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) >>>> +#define IAR_FILTERFAIL_CODE2_9_8 (3) >>>> + >>>> +/* PHY_STS bits */ >>>> +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) >>>> +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) >>>> +#define IAR_PHY_STS_PLL_LOCK BIT(5) >>>> +#define IAR_PHY_STS_CRCVALID BIT(3) >>>> +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) >>>> +#define IAR_PHY_STS_SFD_DET BIT(1) >>>> +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) >>>> + >>>> +/* TESTMODE_CTRL bits */ >>>> +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) >>>> +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) >>>> +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) >>>> +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) >>>> +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) >>>> + >>>> +/* DTM_CTRL1 bits */ >>>> +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) >>>> +#define IAR_DTM_CTRL1_DTM_EN BIT(6) >>>> +#define IAR_DTM_CTRL1_PAGE5 BIT(5) >>>> +#define IAR_DTM_CTRL1_PAGE4 BIT(4) >>>> +#define IAR_DTM_CTRL1_PAGE3 BIT(3) >>>> +#define IAR_DTM_CTRL1_PAGE2 BIT(2) >>>> +#define IAR_DTM_CTRL1_PAGE1 BIT(1) >>>> +#define IAR_DTM_CTRL1_PAGE0 BIT(0) >>>> + >>>> +/* TX_MODE_CTRL */ >>>> +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) >>>> +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) >>>> +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) >>>> +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) >>>> +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) >>>> + >>>> +#define TX_MODE_CTRL_DTS_MASK (7) >>>> + >>>> +#endif /* _MCR20A_H */ >>> The rest looks fine. >>> >>> regards >>> Stefan Schmidt > > With the small nitpick from above fixed I would go ahead and apply this patchset tomorrow. > > Let me know if you will send a new version or if I should amend the small change myself. > > regards > Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello On 19 February 2018 at 23:37, Stefan Schmidt <stefan@osg.samsung.com> wrote: > Hello. > > > On 02/19/2018 10:40 PM, Xue Liu wrote: >> Hello Stefan, >> >> Thanks for the second review. >> >> On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: >>> Hello. >>> >>> On Mon, 2018-02-19 at 11:51, Xue Liu wrote: >>>> This is a driver for the NXP MCR20A 802.15.4 transceiver. >>>> >>>> The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. >>> Please break the lines here around 72 chars so it can be sanely viewed >>> in git log. >>> >> OK. >>>> This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. >>> >>> Wow, I honetsly did not realise CSMA was not done in hardware on this chip. >>> This can be a real problem in busy deplyoment scenarios. >>> >>> From the kernel stack perspective this make thes second timing critical item >>> we migth need to have a softMAC solution for. first ACK handling and now CSMA. >>> >>> If anybody on this list has an interest in digging into the time constraints >>> we have for this in 802.15.4 and find out if the current realtime infrastructure >>> of the kernel offers us what we need for these constraints this would be very >>> welcome! But I am drifting of the actual review of this driver. :-) >>> >>> >> If I remember correctly. Many 802.15.4 chips except at86rf23x have no >> full CSMA support. They have only CCA. >> Is it possible to use hrtimer to control such time constrains ? > > That would be something to find out. I'm honestly not sure. Never really checked out what real time constraints are supported by now. > >>>> https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf >>>> >>>> Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> >>>> --- >>>> drivers/net/ieee802154/Kconfig | 11 + >>>> drivers/net/ieee802154/Makefile | 1 + >>>> drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ >>>> drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ >>>> 4 files changed, 1970 insertions(+) >>>> create mode 100644 drivers/net/ieee802154/mcr20a.c >>>> create mode 100644 drivers/net/ieee802154/mcr20a.h >>>> >>>> diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig >>>> index 303ba41..8782f56 100644 >>>> --- a/drivers/net/ieee802154/Kconfig >>>> +++ b/drivers/net/ieee802154/Kconfig >>>> @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS >>>> exposes a debugfs node for each CA8210 instance which allows >>>> direct use of the Cascoda API, exposing the 802.15.4 MAC >>>> management entities. >>>> + >>>> +config IEEE802154_MCR20A >>>> + tristate "MCR20A transceiver driver" >>>> + depends on IEEE802154_DRIVERS && MAC802154 >>>> + depends on SPI >>>> + ---help--- >>>> + Say Y here to enable the MCR20A SPI 802.15.4 wireless >>>> + controller. >>>> + >>>> + This driver can also be built as a module. To do so, say M here. >>>> + the module will be called 'mcr20a'. >>>> diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile >>>> index bea1de5..104744d 100644 >>>> --- a/drivers/net/ieee802154/Makefile >>>> +++ b/drivers/net/ieee802154/Makefile >>>> @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o >>>> obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o >>>> obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o >>>> obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o >>>> +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o >>>> diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c >>>> new file mode 100644 >>>> index 0000000..90712e9 >>>> --- /dev/null >>>> +++ b/drivers/net/ieee802154/mcr20a.c >>>> @@ -0,0 +1,1460 @@ >>>> +/* >>>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>>> + * >>>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>>> + * >>>> + * This program is free software; you can redistribute it and/or modify >>>> + * it under the terms of the GNU General Public License version 2 >>>> + * as published by the Free Software Foundation. >>>> + * >>>> + * This program is distributed in the hope that it will be useful, >>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>>> + * GNU General Public License for more details. >>>> + * >>>> + */ >>>> +#include <linux/kernel.h> >>>> +#include <linux/module.h> >>>> +#include <linux/gpio.h> >>>> +#include <linux/spi/spi.h> >>>> +#include <linux/workqueue.h> >>>> +#include <linux/interrupt.h> >>>> +#include <linux/skbuff.h> >>>> +#include <linux/of_gpio.h> >>>> +#include <linux/regmap.h> >>>> +#include <linux/ieee802154.h> >>>> +#include <linux/debugfs.h> >>>> + >>>> +#include <net/mac802154.h> >>>> +#include <net/cfg802154.h> >>>> + >>>> +#include <linux/device.h> >>>> + >>>> +#include "mcr20a.h" >>>> + >>>> +#define SPI_COMMAND_BUFFER 3 >>>> + >>>> +#define REGISTER_READ BIT(7) >>>> +#define REGISTER_WRITE (0 << 7) >>>> +#define REGISTER_ACCESS (0 << 6) >>>> +#define PACKET_BUFF_BURST_ACCESS BIT(6) >>>> +#define PACKET_BUFF_BYTE_ACCESS BIT(5) >>>> + >>>> +#define MCR20A_WRITE_REG(x) (x) >>>> +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) >>>> +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) >>>> +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) >>>> + >>>> +#define MCR20A_CMD_REG 0x80 >>>> +#define MCR20A_CMD_REG_MASK 0x3f >>>> +#define MCR20A_CMD_WRITE 0x40 >>>> +#define MCR20A_CMD_FB 0x20 >>> Some of these indents look wrong in my mailer. Did you run this patch through >>> the checkpatch script? >>> >> Yes. 0 erros and 0 warnings. But I will check it again. > > Fair enough. Maybe my mailer was just off in that case. > I will run in through checkpatch anyway before I apply it to my tree. > >>>> +/* Number of Interrupt Request Status Register */ >>>> +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ >>>> + >>>> +/* MCR20A CCA Type */ >>>> +enum { >>>> + MCR20A_CCA_ED, // energy detect - CCA bit not active, >>>> + // not to be used for T and CCCA sequences >>>> + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE >>>> + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE >>>> + MCR20A_CCA_MODE3 >>>> +}; >>>> + >>>> +enum { >>>> + MCR20A_XCVSEQ_IDLE = 0x00, >>>> + MCR20A_XCVSEQ_RX = 0x01, >>>> + MCR20A_XCVSEQ_TX = 0x02, >>>> + MCR20A_XCVSEQ_CCA = 0x03, >>>> + MCR20A_XCVSEQ_TR = 0x04, >>>> + MCR20A_XCVSEQ_CCCA = 0x05, >>>> +}; >>>> + >>>> +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ >>>> +#define MCR20A_MIN_CHANNEL (11) >>>> +#define MCR20A_MAX_CHANNEL (26) >>>> +#define MCR20A_CHANNEL_SPACING (5) >>>> + >>>> +/* MCR20A CCA Threshold constans */ >>>> +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) >>>> +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) >>>> + >>>> +/* version 0C */ >>>> +#define MCR20A_OVERWRITE_VERSION (0x0C) >>>> + >>>> +/* MCR20A PLL configurations */ >>>> +static const u8 PLL_INT[16] = { >>>> + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, >>>> + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, >>>> + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, >>>> + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, >>>> + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, >>>> + /* 2480 */ 0x0D >>>> +}; >>>> + >>>> +static const u8 PLL_FRAC[16] = { >>>> + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, >>>> + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, >>>> + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, >>>> + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, >>>> + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, >>>> + /* 2480 */ 0x80 >>>> +}; >>>> + >>>> +static const struct reg_sequence mar20a_iar_overwrites[] = { >>>> + { IAR_MISC_PAD_CTRL, 0x02 }, >>>> + { IAR_VCO_CTRL1, 0xB3 }, >>>> + { IAR_VCO_CTRL2, 0x07 }, >>>> + { IAR_PA_TUNING, 0x71 }, >>>> + { IAR_CHF_IBUF, 0x2F }, >>>> + { IAR_CHF_QBUF, 0x2F }, >>>> + { IAR_CHF_IRIN, 0x24 }, >>>> + { IAR_CHF_QRIN, 0x24 }, >>>> + { IAR_CHF_IL, 0x24 }, >>>> + { IAR_CHF_QL, 0x24 }, >>>> + { IAR_CHF_CC1, 0x32 }, >>>> + { IAR_CHF_CCL, 0x1D }, >>>> + { IAR_CHF_CC2, 0x2D }, >>>> + { IAR_CHF_IROUT, 0x24 }, >>>> + { IAR_CHF_QROUT, 0x24 }, >>>> + { IAR_PA_CAL, 0x28 }, >>>> + { IAR_AGC_THR1, 0x55 }, >>>> + { IAR_AGC_THR2, 0x2D }, >>>> + { IAR_ATT_RSSI1, 0x5F }, >>>> + { IAR_ATT_RSSI2, 0x8F }, >>>> + { IAR_RSSI_OFFSET, 0x61 }, >>>> + { IAR_CHF_PMA_GAIN, 0x03 }, >>>> + { IAR_CCA1_THRESH, 0x50 }, >>>> + { IAR_CORR_NVAL, 0x13 }, >>>> + { IAR_ACKDELAY, 0x3D }, >>>> +}; >>>> + >>>> +#define MCR20A_VALID_CHANNELS (0x07FFF800) >>>> + >>>> +struct mcr20a_platform_data { >>>> + int rst_gpio; >>>> +}; >>>> + >>>> +#define MCR20A_MAX_BUF (127) >>>> + >>>> +#define printdev(X) (&X->spi->dev) >>>> + >>>> +/* regmap information for Direct Access Register (DAR) access */ >>>> +#define MCR20A_DAR_WRITE 0x01 >>>> +#define MCR20A_DAR_READ 0x00 >>>> +#define MCR20A_DAR_NUMREGS 0x3F >>>> + >>>> +/* regmap information for Indirect Access Register (IAR) access */ >>>> +#define MCR20A_IAR_ACCESS 0x80 >>>> +#define MCR20A_IAR_NUMREGS 0xBEFF >>>> + >>>> +/* Read/Write SPI Commands for DAR and IAR registers. */ >>>> +#define MCR20A_READSHORT(reg) ((reg) << 1) >>>> +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) >>>> +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) >>>> +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) >>>> + >>>> +/* Type definitions for link configuration of instantiable layers */ >>>> +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) >>>> + >>>> +static bool >>>> +mcr20a_dar_writeable(struct device *dev, unsigned int reg) >>>> +{ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + case DAR_PHY_CTRL1: >>>> + case DAR_PHY_CTRL2: >>>> + case DAR_PHY_CTRL3: >>>> + case DAR_PHY_CTRL4: >>>> + case DAR_SRC_CTRL: >>>> + case DAR_SRC_ADDRS_SUM_LSB: >>>> + case DAR_SRC_ADDRS_SUM_MSB: >>>> + case DAR_T3CMP_LSB: >>>> + case DAR_T3CMP_MSB: >>>> + case DAR_T3CMP_USB: >>>> + case DAR_T2PRIMECMP_LSB: >>>> + case DAR_T2PRIMECMP_MSB: >>>> + case DAR_T1CMP_LSB: >>>> + case DAR_T1CMP_MSB: >>>> + case DAR_T1CMP_USB: >>>> + case DAR_T2CMP_LSB: >>>> + case DAR_T2CMP_MSB: >>>> + case DAR_T2CMP_USB: >>>> + case DAR_T4CMP_LSB: >>>> + case DAR_T4CMP_MSB: >>>> + case DAR_T4CMP_USB: >>>> + case DAR_PLL_INT0: >>>> + case DAR_PLL_FRAC0_LSB: >>>> + case DAR_PLL_FRAC0_MSB: >>>> + case DAR_PA_PWR: >>>> + /* no DAR_ACM */ >>>> + case DAR_OVERWRITE_VER: >>>> + case DAR_CLK_OUT_CTRL: >>>> + case DAR_PWR_MODES: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_readable(struct device *dev, unsigned int reg) >>>> +{ >>>> + bool rc; >>>> + >>>> + /* all writeable are also readable */ >>>> + rc = mcr20a_dar_writeable(dev, reg); >>>> + if (rc) >>>> + return rc; >>>> + >>>> + /* readonly regs */ >>>> + switch (reg) { >>>> + case DAR_RX_FRM_LEN: >>>> + case DAR_CCA1_ED_FNL: >>>> + case DAR_EVENT_TMR_LSB: >>>> + case DAR_EVENT_TMR_MSB: >>>> + case DAR_EVENT_TMR_USB: >>>> + case DAR_TIMESTAMP_LSB: >>>> + case DAR_TIMESTAMP_MSB: >>>> + case DAR_TIMESTAMP_USB: >>>> + case DAR_SEQ_STATE: >>>> + case DAR_LQI_VALUE: >>>> + case DAR_RSSI_CCA_CONT: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_volatile(struct device *dev, unsigned int reg) >>>> +{ >>>> + /* can be changed during runtime */ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + /* use them in spi_async and regmap so it's volatile */ >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_dar_precious(struct device *dev, unsigned int reg) >>>> +{ >>>> + /* don't clear irq line on read */ >>>> + switch (reg) { >>>> + case DAR_IRQ_STS1: >>>> + case DAR_IRQ_STS2: >>>> + case DAR_IRQ_STS3: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static const struct regmap_config mcr20a_dar_regmap = { >>>> + .name = "mcr20a_dar", >>>> + .reg_bits = 8, >>>> + .val_bits = 8, >>>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, >>>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, >>>> + .cache_type = REGCACHE_RBTREE, >>>> + .writeable_reg = mcr20a_dar_writeable, >>>> + .readable_reg = mcr20a_dar_readable, >>>> + .volatile_reg = mcr20a_dar_volatile, >>>> + .precious_reg = mcr20a_dar_precious, >>>> + .fast_io = true, >>>> + .can_multi_write = true, >>>> +}; >>>> + >>>> +static bool >>>> +mcr20a_iar_writeable(struct device *dev, unsigned int reg) >>>> +{ >>>> + switch (reg) { >>>> + case IAR_XTAL_TRIM: >>>> + case IAR_PMC_LP_TRIM: >>>> + case IAR_MACPANID0_LSB: >>>> + case IAR_MACPANID0_MSB: >>>> + case IAR_MACSHORTADDRS0_LSB: >>>> + case IAR_MACSHORTADDRS0_MSB: >>>> + case IAR_MACLONGADDRS0_0: >>>> + case IAR_MACLONGADDRS0_8: >>>> + case IAR_MACLONGADDRS0_16: >>>> + case IAR_MACLONGADDRS0_24: >>>> + case IAR_MACLONGADDRS0_32: >>>> + case IAR_MACLONGADDRS0_40: >>>> + case IAR_MACLONGADDRS0_48: >>>> + case IAR_MACLONGADDRS0_56: >>>> + case IAR_RX_FRAME_FILTER: >>>> + case IAR_PLL_INT1: >>>> + case IAR_PLL_FRAC1_LSB: >>>> + case IAR_PLL_FRAC1_MSB: >>>> + case IAR_MACPANID1_LSB: >>>> + case IAR_MACPANID1_MSB: >>>> + case IAR_MACSHORTADDRS1_LSB: >>>> + case IAR_MACSHORTADDRS1_MSB: >>>> + case IAR_MACLONGADDRS1_0: >>>> + case IAR_MACLONGADDRS1_8: >>>> + case IAR_MACLONGADDRS1_16: >>>> + case IAR_MACLONGADDRS1_24: >>>> + case IAR_MACLONGADDRS1_32: >>>> + case IAR_MACLONGADDRS1_40: >>>> + case IAR_MACLONGADDRS1_48: >>>> + case IAR_MACLONGADDRS1_56: >>>> + case IAR_DUAL_PAN_CTRL: >>>> + case IAR_DUAL_PAN_DWELL: >>>> + case IAR_CCA1_THRESH: >>>> + case IAR_CCA1_ED_OFFSET_COMP: >>>> + case IAR_LQI_OFFSET_COMP: >>>> + case IAR_CCA_CTRL: >>>> + case IAR_CCA2_CORR_PEAKS: >>>> + case IAR_CCA2_CORR_THRESH: >>>> + case IAR_TMR_PRESCALE: >>>> + case IAR_ANT_PAD_CTRL: >>>> + case IAR_MISC_PAD_CTRL: >>>> + case IAR_BSM_CTRL: >>>> + case IAR_RNG: >>>> + case IAR_RX_WTR_MARK: >>>> + case IAR_SOFT_RESET: >>>> + case IAR_TXDELAY: >>>> + case IAR_ACKDELAY: >>>> + case IAR_CORR_NVAL: >>>> + case IAR_ANT_AGC_CTRL: >>>> + case IAR_AGC_THR1: >>>> + case IAR_AGC_THR2: >>>> + case IAR_PA_CAL: >>>> + case IAR_ATT_RSSI1: >>>> + case IAR_ATT_RSSI2: >>>> + case IAR_RSSI_OFFSET: >>>> + case IAR_XTAL_CTRL: >>>> + case IAR_CHF_PMA_GAIN: >>>> + case IAR_CHF_IBUF: >>>> + case IAR_CHF_QBUF: >>>> + case IAR_CHF_IRIN: >>>> + case IAR_CHF_QRIN: >>>> + case IAR_CHF_IL: >>>> + case IAR_CHF_QL: >>>> + case IAR_CHF_CC1: >>>> + case IAR_CHF_CCL: >>>> + case IAR_CHF_CC2: >>>> + case IAR_CHF_IROUT: >>>> + case IAR_CHF_QROUT: >>>> + case IAR_PA_TUNING: >>>> + case IAR_VCO_CTRL1: >>>> + case IAR_VCO_CTRL2: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_iar_readable(struct device *dev, unsigned int reg) >>>> +{ >>>> + bool rc; >>>> + >>>> + /* all writeable are also readable */ >>>> + rc = mcr20a_iar_writeable(dev, reg); >>>> + if (rc) >>>> + return rc; >>>> + >>>> + /* readonly regs */ >>>> + switch (reg) { >>>> + case IAR_PART_ID: >>>> + case IAR_DUAL_PAN_STS: >>>> + case IAR_RX_BYTE_COUNT: >>>> + case IAR_FILTERFAIL_CODE1: >>>> + case IAR_FILTERFAIL_CODE2: >>>> + case IAR_RSSI: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static bool >>>> +mcr20a_iar_volatile(struct device *dev, unsigned int reg) >>>> +{ >>>> +/* can be changed during runtime */ >>>> + switch (reg) { >>>> + case IAR_DUAL_PAN_STS: >>>> + case IAR_RX_BYTE_COUNT: >>>> + case IAR_FILTERFAIL_CODE1: >>>> + case IAR_FILTERFAIL_CODE2: >>>> + case IAR_RSSI: >>>> + return true; >>>> + default: >>>> + return false; >>>> + } >>>> +} >>>> + >>>> +static const struct regmap_config mcr20a_iar_regmap = { >>>> + .name = "mcr20a_iar", >>>> + .reg_bits = 16, >>>> + .val_bits = 8, >>>> + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, >>>> + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, >>>> + .cache_type = REGCACHE_RBTREE, >>>> + .writeable_reg = mcr20a_iar_writeable, >>>> + .readable_reg = mcr20a_iar_readable, >>>> + .volatile_reg = mcr20a_iar_volatile, >>>> + .fast_io = true, >>>> +}; >>>> + >>>> +struct mcr20a_local { >>>> + struct spi_device *spi; >>>> + >>>> + struct ieee802154_hw *hw; >>>> + struct mcr20a_platform_data *pdata; >>>> + struct regmap *regmap_dar; >>>> + struct regmap *regmap_iar; >>>> + >>>> + u8 *buf; >>>> + >>>> + bool is_tx; >>>> + >>>> + /* for writing tx buffer */ >>>> + struct spi_message tx_buf_msg; >>>> + u8 tx_header[1]; >>>> + /* burst buffer write command */ >>>> + struct spi_transfer tx_xfer_header; >>>> + u8 tx_len[1]; >>>> + /* len of tx packet */ >>>> + struct spi_transfer tx_xfer_len; >>>> + /* data of tx packet */ >>>> + struct spi_transfer tx_xfer_buf; >>>> + struct sk_buff *tx_skb; >>>> + >>>> + /* for read length rxfifo */ >>>> + struct spi_message reg_msg; >>>> + u8 reg_cmd[1]; >>>> + u8 reg_data[MCR20A_IRQSTS_NUM]; >>>> + struct spi_transfer reg_xfer_cmd; >>>> + struct spi_transfer reg_xfer_data; >>>> + >>>> + /* receive handling */ >>>> + struct spi_message rx_buf_msg; >>>> + u8 rx_header[1]; >>>> + struct spi_transfer rx_xfer_header; >>>> + u8 rx_lqi[1]; >>>> + struct spi_transfer rx_xfer_lqi; >>>> + u8 rx_buf[MCR20A_MAX_BUF]; >>>> + struct spi_transfer rx_xfer_buf; >>>> + >>>> + /* isr handling for reading intstat */ >>>> + struct spi_message irq_msg; >>>> + u8 irq_header[1]; >>>> + u8 irq_data[MCR20A_IRQSTS_NUM]; >>>> + struct spi_transfer irq_xfer_data; >>>> + struct spi_transfer irq_xfer_header; >>>> +}; >>>> + >>>> +static void >>>> +mcr20a_write_tx_buf_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + lp->reg_msg.complete = NULL; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>>> + lp->reg_data[0] = MCR20A_XCVSEQ_TX; >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + ret = spi_async(lp->spi, &lp->reg_msg); >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to set SEQ TX\n"); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + lp->tx_skb = skb; >>>> + >>>> +#ifdef DEBUG >>>> + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, >>>> + skb->data, skb->len, 0); >>>> +#endif >>>> + >>>> + lp->is_tx = 1; >>>> + >>>> + lp->reg_msg.complete = NULL; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); >>>> + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + return spi_async(lp->spi, &lp->reg_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + unsigned int val = 0; >>>> + u8 energy_level; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); >>>> + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { >>>> + /* Change CCA Type to 00 - Energy Detect */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); >>>> + /* Perform ED */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>>> + MCR20A_XCVSEQ_CCA); >>>> + val = 0; >>>> + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) >>>> + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); >>>> + /* the energy level scaled in 0x00 - 0xFF */ >>>> + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); >>>> + energy_level = (u8)val; >>>> + >>>> + if (energy_level >= 90) { >>>> + /* ED value is below minimum. Return 0x00. */ >>>> + energy_level = 0x00; >>>> + } else if (energy_level <= 26) { >>>> + /* ED value is above maximum. Return 0xFF. */ >>>> + energy_level = 0xFF; >>>> + } else { >>>> + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ >>>> + energy_level = (90 - energy_level); >>>> + energy_level <<= 2; >>>> + } >>>> + >>>> + *level = energy_level; >>>> + } else { >>>> + /* switch to IDLE at first */ >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, >>>> + MCR20A_XCVSEQ_IDLE); >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); >>> Nitpick. Typo in channel here. Might as well use __func__ :) >>> >> Correct. > > Are you going to sent a new version with this one fixed? > >>>> + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); >>>> + if (ret) >>>> + return ret; >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); >>>> + if (ret) >>>> + return ret; >>>> + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, >>>> + PLL_FRAC[channel - 11]); >>>> + if (ret) >>>> + return ret; >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_start(struct ieee802154_hw *hw) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* No slotted operation */ >>>> + dev_dbg(printdev(lp), "no slotted operation\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_SLOTTED, 0x0); >>>> + >>>> + /* enable irq */ >>>> + enable_irq(lp->spi->irq); >>>> + >>>> + /* Unmask SEQ interrupt */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, >>>> + DAR_PHY_CTRL2_SEQMSK, 0x0); >>>> + >>>> + /* Start the RX sequence */ >>>> + dev_dbg(printdev(lp), "start the RX sequence\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_stop(struct ieee802154_hw *hw) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* stop all running sequence */ >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>>> + >>>> + /* disable irq */ >>>> + disable_irq(lp->spi->irq); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, >>>> + struct ieee802154_hw_addr_filt *filt, >>>> + unsigned long changed) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { >>>> + u16 addr = le16_to_cpu(filt->short_addr); >>>> + >>>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); >>>> + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_PANID_CHANGED) { >>>> + u16 pan = le16_to_cpu(filt->pan_id); >>>> + >>>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); >>>> + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { >>>> + u8 addr[8], i; >>>> + >>>> + memcpy(addr, &filt->ieee_addr, 8); >>>> + for (i = 0; i < 8; i++) >>>> + regmap_write(lp->regmap_iar, >>>> + IAR_MACLONGADDRS0_0 + i, addr[i]); >>>> + } >>>> + >>>> + if (changed & IEEE802154_AFILT_PANC_CHANGED) { >>>> + if (filt->pan_coord) { >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); >>>> + } else { >>>> + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); >>>> + } >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +/* -30 dBm to 10 dBm */ >>>> +#define MCR20A_MAX_TX_POWERS 0x14 >>>> +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { >>>> + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, >>>> + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 >>>> +}; >>>> + >>>> +static int >>>> +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + u32 i; >>>> + >>>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); >>>> + >>>> + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { >>>> + if (lp->hw->phy->supported.tx_powers[i] == mbm) >>>> + return regmap_write(lp->regmap_dar, DAR_PA_PWR, >>>> + ((i + 8) & 0x1F)); >>>> + } >>>> + >>>> + return -EINVAL; >>>> +} >>>> + >>>> +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD >>>> +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; >>>> + >>>> +static int >>>> +mcr20a_set_cca_mode(struct ieee802154_hw *hw, >>>> + const struct wpan_phy_cca *cca) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + unsigned int cca_mode = 0xff; >>>> + bool cca_mode_and = false; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* mapping 802.15.4 to driver spec */ >>>> + switch (cca->mode) { >>>> + case NL802154_CCA_ENERGY: >>>> + cca_mode = MCR20A_CCA_MODE1; >>>> + break; >>>> + case NL802154_CCA_CARRIER: >>>> + cca_mode = MCR20A_CCA_MODE2; >>>> + break; >>>> + case NL802154_CCA_ENERGY_CARRIER: >>>> + switch (cca->opt) { >>>> + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: >>>> + cca_mode = MCR20A_CCA_MODE3; >>>> + cca_mode_and = true; >>>> + break; >>>> + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: >>>> + cca_mode = MCR20A_CCA_MODE3; >>>> + cca_mode_and = false; >>>> + break; >>>> + default: >>>> + return -EINVAL; >>>> + } >>>> + break; >>>> + default: >>>> + return -EINVAL; >>>> + } >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_CCATYPE_MASK, >>>> + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + if (cca_mode == MCR20A_CCA_MODE3) { >>>> + if (cca_mode_and) { >>>> + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, >>>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>>> + 0x08); >>>> + } else { >>>> + ret = regmap_update_bits(lp->regmap_iar, >>>> + IAR_CCA_CTRL, >>>> + IAR_CCA_CTRL_CCA3_AND_NOT_OR, >>>> + 0x00); >>>> + } >>>> + if (ret < 0) >>>> + return ret; >>>> + } >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + u32 i; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { >>>> + if (hw->phy->supported.cca_ed_levels[i] == mbm) >>>> + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) >>>> +{ >>>> + struct mcr20a_local *lp = hw->priv; >>>> + int ret; >>>> + u8 rx_frame_filter_reg = 0x0; >>>> + u8 val; >>>> + >>>> + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); >>>> + >>>> + if (on) { >>>> + /* All frame types accepted*/ >>>> + val |= DAR_PHY_CTRL4_PROMISCUOUS; >>>> + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); >>>> + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | >>>> + IAR_RX_FRAME_FLT_NS_FT); >>>> + >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PROMISCUOUS, >>>> + DAR_PHY_CTRL4_PROMISCUOUS); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + rx_frame_filter_reg); >>>> + if (ret < 0) >>>> + return ret; >>>> + } else { >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, >>>> + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); >>>> + if (ret < 0) >>>> + return ret; >>>> + >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + IAR_RX_FRAME_FLT_FRM_VER | >>>> + IAR_RX_FRAME_FLT_BEACON_FT | >>>> + IAR_RX_FRAME_FLT_DATA_FT | >>>> + IAR_RX_FRAME_FLT_CMD_FT); >>>> + if (ret < 0) >>>> + return ret; >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static const struct ieee802154_ops mcr20a_hw_ops = { >>>> + .owner = THIS_MODULE, >>>> + .xmit_async = mcr20a_xmit, >>>> + .ed = mcr20a_ed, >>>> + .set_channel = mcr20a_set_channel, >>>> + .start = mcr20a_start, >>>> + .stop = mcr20a_stop, >>>> + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, >>>> + .set_txpower = mcr20a_set_txpower, >>>> + .set_cca_mode = mcr20a_set_cca_mode, >>>> + .set_cca_ed_level = mcr20a_set_cca_ed_level, >>>> + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, >>>> +}; >>>> + >>>> +static int >>>> +mcr20a_request_rx(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* Start the RX sequence */ >>>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_handle_rx_read_buf_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>>> + struct sk_buff *skb; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + dev_dbg(printdev(lp), "RX is done\n"); >>>> + >>>> + if (!ieee802154_is_valid_psdu_len(len)) { >>>> + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); >>>> + len = IEEE802154_MTU; >>>> + } >>>> + >>>> + len = len - 2; /* get rid of frame check field */ >>>> + >>>> + skb = dev_alloc_skb(len); >>>> + if (!skb) >>>> + return; >>>> + >>>> + memcpy(skb_put(skb, len), lp->rx_buf, len); >>>> + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); >>>> + >>>> +#ifdef DEBUG >>>> + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, >>>> + lp->rx_buf, len, 0); >>>> + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); >>>> +#endif >>> Here, as well as in the corresponding TX hex_dump call I wonder how to better >>> make use of it. Recompiling the driver to get the dump is not really nice. >>> Having a way to have this enabled during runtime might be better. And across >>> all drivers. Just thinking out loud here. Not saying you need to be he one >>> implementing it. What do you think? >>> >>> >> using module parameters may a solution. > > This would be an option but I was thinking more about towards a tracepoints like approach where we can dynamically enable or disable the > hexdump or other debug functionality. Loading and unloading the module to change this is a bit cumbersome. This code might not even be a > module at all but compiled in. > > I need to check what the kernel infra offers here and how other subsystems use it. > Do you mean "dynamic debug" https://www.kernel.org/doc/html/v4.11/admin-guide/dynamic-debug-howto.html ? I saw there is all a version for print_hex_dump. >>>> + /* start RX sequence */ >>>> + mcr20a_request_rx(lp); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_handle_rx_read_len_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 len; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* get the length of received frame */ >>>> + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; >>>> + dev_dbg(printdev(lp), "frame len : %d\n", len); >>>> + >>>> + /* prepare to read the rx buf */ >>>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>>> + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; >>>> + lp->rx_xfer_buf.len = len; >>>> + >>>> + ret = spi_async(lp->spi, &lp->rx_buf_msg); >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to read rx buffer length\n"); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_rx(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; >>>> + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); >>>> + lp->reg_xfer_data.len = 1; >>>> + >>>> + return spi_async(lp->spi, &lp->reg_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_tx_complete(struct mcr20a_local *lp) >>>> +{ >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); >>>> + >>>> + return mcr20a_request_rx(lp); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_handle_tx(struct mcr20a_local *lp) >>>> +{ >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* write tx buffer */ >>>> + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; >>>> + /* add 2 bytes of FCS */ >>>> + lp->tx_len[0] = lp->tx_skb->len + 2; >>>> + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; >>>> + /* add 1 byte psduLength */ >>>> + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; >>>> + >>>> + ret = spi_async(lp->spi, &lp->tx_buf_msg); >>>> + if (ret) { >>>> + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); >>>> + return ret; >>>> + } >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_irq_clean_complete(void *context) >>>> +{ >>>> + struct mcr20a_local *lp = context; >>>> + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + enable_irq(lp->spi->irq); >>>> + >>>> + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", >>>> + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); >>>> + >>>> + switch (seq_state) { >>>> + /* TX IRQ, RX IRQ and SEQ IRQ */ >>>> + case (0x03): >>>> + if (lp->is_tx) { >>>> + lp->is_tx = 0; >>>> + dev_dbg(printdev(lp), "TX is done. No ACK\n"); >>>> + mcr20a_handle_tx_complete(lp); >>>> + } >>>> + break; >>>> + case (0x05): >>>> + /* rx is starting */ >>>> + dev_dbg(printdev(lp), "RX is starting\n"); >>>> + mcr20a_handle_rx(lp); >>>> + break; >>>> + case (0x07): >>>> + if (lp->is_tx) { >>>> + /* tx is done */ >>>> + lp->is_tx = 0; >>>> + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); >>>> + mcr20a_handle_tx_complete(lp); >>>> + } else { >>>> + /* rx is starting */ >>>> + dev_dbg(printdev(lp), "RX is starting\n"); >>>> + mcr20a_handle_rx(lp); >>>> + } >>>> + break; >>>> + case (0x01): >>>> + if (lp->is_tx) { >>>> + dev_dbg(printdev(lp), "TX is starting\n"); >>>> + mcr20a_handle_tx(lp); >>>> + } else { >>>> + dev_dbg(printdev(lp), "MCR20A is stop\n"); >>>> + } >>>> + break; >>>> + } >>>> +} >>>> + >>>> +static void mcr20a_irq_status_complete(void *context) >>>> +{ >>>> + int ret; >>>> + struct mcr20a_local *lp = context; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); >>>> + >>>> + lp->reg_msg.complete = mcr20a_irq_clean_complete; >>>> + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); >>>> + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); >>>> + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; >>>> + >>>> + ret = spi_async(lp->spi, &lp->reg_msg); >>>> + >>>> + if (ret) >>>> + dev_err(printdev(lp), "failed to clean irq status\n"); >>>> +} >>>> + >>>> +static irqreturn_t mcr20a_irq_isr(int irq, void *data) >>>> +{ >>>> + struct mcr20a_local *lp = data; >>>> + int ret; >>>> + >>>> + disable_irq_nosync(irq); >>>> + >>>> + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); >>>> + /* read IRQSTSx */ >>>> + ret = spi_async(lp->spi, &lp->irq_msg); >>>> + if (ret) { >>>> + enable_irq(irq); >>>> + return IRQ_NONE; >>>> + } >>>> + >>>> + return IRQ_HANDLED; >>>> +} >>>> + >>>> +static int mcr20a_get_platform_data(struct spi_device *spi, >>>> + struct mcr20a_platform_data *pdata) >>>> +{ >>>> + int ret = 0; >>>> + >>>> + if (!spi->dev.of_node) >>>> + return -EINVAL; >>>> + >>>> + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); >>>> + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static void mcr20a_hw_setup(struct mcr20a_local *lp) >>>> +{ >>>> + u8 i; >>>> + struct ieee802154_hw *hw = lp->hw; >>>> + struct wpan_phy *phy = lp->hw->phy; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + phy->symbol_duration = 16; >>>> + phy->lifs_period = 40; >>>> + phy->sifs_period = 12; >>>> + >>>> + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | >>>> + IEEE802154_HW_AFILT | >>>> + IEEE802154_HW_PROMISCUOUS; >>>> + >>>> + phy->flags = WPAN_PHY_FLAG_TXPOWER | >>>> + WPAN_PHY_FLAG_CCA_ED_LEVEL | >>>> + WPAN_PHY_FLAG_CCA_MODE; >>>> + >>>> + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | >>>> + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); >>>> + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | >>>> + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); >>>> + >>>> + /* initiating cca_ed_levels */ >>>> + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; >>>> + ++i) { >>>> + mcr20a_ed_levels[i] = -i * 100; >>>> + } >>>> + >>>> + phy->supported.cca_ed_levels = mcr20a_ed_levels; >>>> + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); >>>> + >>>> + phy->cca.mode = NL802154_CCA_ENERGY; >>>> + >>>> + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; >>>> + phy->current_page = 0; >>>> + /* MCR20A default reset value */ >>>> + phy->current_channel = 20; >>>> + phy->symbol_duration = 16; >>>> + phy->supported.tx_powers = mcr20a_powers; >>>> + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); >>>> + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; >>>> + phy->transmit_power = phy->supported.tx_powers[0x0F]; >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->tx_buf_msg); >>>> + lp->tx_buf_msg.context = lp; >>>> + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; >>>> + >>>> + lp->tx_xfer_header.len = 1; >>>> + lp->tx_xfer_header.tx_buf = lp->tx_header; >>>> + >>>> + lp->tx_xfer_len.len = 1; >>>> + lp->tx_xfer_len.tx_buf = lp->tx_len; >>>> + >>>> + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); >>>> + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); >>>> + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->reg_msg); >>>> + lp->reg_msg.context = lp; >>>> + >>>> + lp->reg_xfer_cmd.len = 1; >>>> + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; >>>> + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; >>>> + >>>> + lp->reg_xfer_data.rx_buf = lp->reg_data; >>>> + lp->reg_xfer_data.tx_buf = lp->reg_data; >>>> + >>>> + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); >>>> + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); >>>> + >>>> + spi_message_init(&lp->rx_buf_msg); >>>> + lp->rx_buf_msg.context = lp; >>>> + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; >>>> + lp->rx_xfer_header.len = 1; >>>> + lp->rx_xfer_header.tx_buf = lp->rx_header; >>>> + lp->rx_xfer_header.rx_buf = lp->rx_header; >>>> + >>>> + lp->rx_xfer_buf.rx_buf = lp->rx_buf; >>>> + >>>> + lp->rx_xfer_lqi.len = 1; >>>> + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; >>>> + >>>> + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); >>>> + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); >>>> + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); >>>> +} >>>> + >>>> +static void >>>> +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) >>>> +{ >>>> + spi_message_init(&lp->irq_msg); >>>> + lp->irq_msg.context = lp; >>>> + lp->irq_msg.complete = mcr20a_irq_status_complete; >>>> + lp->irq_xfer_header.len = 1; >>>> + lp->irq_xfer_header.tx_buf = lp->irq_header; >>>> + lp->irq_xfer_header.rx_buf = lp->irq_header; >>>> + >>>> + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; >>>> + lp->irq_xfer_data.rx_buf = lp->irq_data; >>>> + >>>> + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); >>>> + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); >>>> +} >>>> + >>>> +static int >>>> +mcr20a_phy_init(struct mcr20a_local *lp) >>>> +{ >>>> + u8 index; >>>> + unsigned int phy_reg = 0; >>>> + int ret; >>>> + >>>> + dev_dbg(printdev(lp), "%s\n", __func__); >>>> + >>>> + /* Disable Tristate on COCO MISO for SPI reads */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts >>>> + * immediately after init >>>> + */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear all PP IRQ bits in IRQSTS2 */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, >>>> + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | >>>> + DAR_IRQSTS2_WAKE_IRQ); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Disable all timer interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, >>>> + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); >>>> + >>>> + /* PHY_CTRL2 : disable all interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* PHY_CTRL3 : disable all timers and remaining interrupts */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, >>>> + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | >>>> + DAR_PHY_CTRL3_WAKE_MSK); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* SRC_CTRL : enable Acknowledge Frame Pending and >>>> + * Source Address Matching Enable >>>> + */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, >>>> + DAR_SRC_CTRL_ACK_FRM_PND | >>>> + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* RX_FRAME_FILTER */ >>>> + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, >>>> + IAR_RX_FRAME_FLT_FRM_VER | >>>> + IAR_RX_FRAME_FLT_BEACON_FT | >>>> + IAR_RX_FRAME_FLT_DATA_FT | >>>> + IAR_RX_FRAME_FLT_CMD_FT); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + dev_info(printdev(lp), "overwrites version: 0x%02x\n", >>>> + MCR20A_OVERWRITE_VERSION); >>>> + >>>> + /* Overwrites direct registers */ >>>> + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, >>>> + MCR20A_OVERWRITE_VERSION); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Overwrites indirect registers */ >>>> + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, >>>> + ARRAY_SIZE(mar20a_iar_overwrites)); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear HW indirect queue */ >>>> + dev_dbg(printdev(lp), "clear HW indirect queue\n"); >>>> + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { >>>> + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << >>>> + DAR_SRC_CTRL_INDEX_SHIFT) >>>> + | (DAR_SRC_CTRL_SRCADDR_EN) >>>> + | (DAR_SRC_CTRL_INDEX_DISABLE)); >>>> + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + phy_reg = 0; >>>> + } >>>> + >>>> + /* Assign HW Indirect hash table to PAN0 */ >>>> + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* Clear current lvl */ >>>> + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; >>>> + >>>> + /* Set new lvl */ >>>> + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << >>>> + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; >>>> + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* set CCA threshold to -75 dBm */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* set prescaller to obtain 1 symbol (16us) timebase */ >>>> + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* enable autodoze mode. */ >>>> + dev_dbg(printdev(lp), "enable autodoze mode\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, >>>> + DAR_PWR_MODES_AUTODOZE, >>>> + DAR_PWR_MODES_AUTODOZE); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + /* disable clk_out */ >>>> + dev_dbg(printdev(lp), "disable clk_out\n"); >>>> + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, >>>> + DAR_CLK_OUT_CTRL_EN, 0x0); >>>> + if (ret) >>>> + goto err_ret; >>>> + >>>> + return 0; >>>> + >>>> +err_ret: >>>> + return ret; >>>> +} >>>> + >>>> +static int >>>> +mcr20a_probe(struct spi_device *spi) >>>> +{ >>>> + struct ieee802154_hw *hw; >>>> + struct mcr20a_local *lp; >>>> + struct mcr20a_platform_data *pdata; >>>> + int irq_type; >>>> + int ret = -ENOMEM; >>>> + >>>> + dev_dbg(&spi->dev, "%s\n", __func__); >>>> + >>>> + if (!spi->irq) { >>>> + dev_err(&spi->dev, "no IRQ specified\n"); >>>> + return -EINVAL; >>>> + } >>>> + >>>> + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); >>>> + if (!pdata) >>>> + return -ENOMEM; >>>> + >>>> + /* set mcr20a platform data */ >>>> + ret = mcr20a_get_platform_data(spi, pdata); >>>> + if (ret < 0) { >>>> + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); >>>> + return ret; >>>> + } >>>> + >>>> + /* init reset gpio */ >>>> + if (gpio_is_valid(pdata->rst_gpio)) { >>>> + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, >>>> + GPIOF_OUT_INIT_HIGH, "reset"); >>>> + if (ret) >>>> + return ret; >>>> + } >>>> + >>>> + /* reset mcr20a */ >>>> + if (gpio_is_valid(pdata->rst_gpio)) { >>>> + usleep_range(10, 20); >>>> + gpio_set_value_cansleep(pdata->rst_gpio, 0); >>>> + usleep_range(10, 20); >>>> + gpio_set_value_cansleep(pdata->rst_gpio, 1); >>>> + usleep_range(120, 240); >>>> + } >>>> + >>>> + /* allocate ieee802154_hw and private data */ >>>> + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); >>>> + if (!hw) { >>>> + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); >>>> + return -ENOMEM; >>>> + } >>>> + >>>> + /* init mcr20a local data */ >>>> + lp = hw->priv; >>>> + lp->hw = hw; >>>> + lp->spi = spi; >>>> + lp->spi->dev.platform_data = pdata; >>>> + lp->pdata = pdata; >>>> + >>>> + /* init ieee802154_hw */ >>>> + hw->parent = &spi->dev; >>>> + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); >>>> + >>>> + /* init buf */ >>>> + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); >>>> + >>>> + if (!lp->buf) >>>> + return -ENOMEM; >>>> + >>>> + mcr20a_setup_tx_spi_messages(lp); >>>> + mcr20a_setup_rx_spi_messages(lp); >>>> + mcr20a_setup_irq_spi_messages(lp); >>>> + >>>> + /* setup regmap */ >>>> + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); >>>> + if (IS_ERR(lp->regmap_dar)) { >>>> + ret = PTR_ERR(lp->regmap_dar); >>>> + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", >>>> + ret); >>>> + goto free_dev; >>>> + } >>>> + >>>> + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); >>>> + if (IS_ERR(lp->regmap_iar)) { >>>> + ret = PTR_ERR(lp->regmap_iar); >>>> + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); >>>> + goto free_dev; >>>> + } >>>> + >>>> + mcr20a_hw_setup(lp); >>>> + >>>> + spi_set_drvdata(spi, lp); >>>> + >>>> + ret = mcr20a_phy_init(lp); >>>> + if (ret < 0) { >>>> + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); >>>> + goto free_dev; >>>> + } >>>> + >>>> + irq_type = irq_get_trigger_type(spi->irq); >>>> + if (!irq_type) >>>> + irq_type = IRQF_TRIGGER_FALLING; >>>> + >>>> + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, >>>> + irq_type, dev_name(&spi->dev), lp); >>>> + if (ret) { >>>> + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); >>>> + ret = -ENODEV; >>>> + goto free_dev; >>>> + } >>>> + >>>> + /* disable_irq by default and wait for starting hardware */ >>>> + disable_irq(spi->irq); >>>> + >>>> + ret = ieee802154_register_hw(hw); >>>> + if (ret) { >>>> + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); >>>> + goto free_dev; >>>> + } >>>> + >>>> + return ret; >>>> + >>>> +free_dev: >>>> + ieee802154_free_hw(lp->hw); >>>> + >>>> + return ret; >>>> +} >>>> + >>>> +static int mcr20a_remove(struct spi_device *spi) >>>> +{ >>>> + struct mcr20a_local *lp = spi_get_drvdata(spi); >>>> + >>>> + dev_dbg(&spi->dev, "%s\n", __func__); >>>> + >>>> + ieee802154_unregister_hw(lp->hw); >>>> + ieee802154_free_hw(lp->hw); >>>> + >>>> + return 0; >>>> +} >>>> + >>>> +static const struct of_device_id mcr20a_of_match[] = { >>>> + { .compatible = "nxp,mcr20a", }, >>>> + { }, >>>> +}; >>>> +MODULE_DEVICE_TABLE(of, mcr20a_of_match); >>>> + >>>> +static const struct spi_device_id mcr20a_device_id[] = { >>>> + { .name = "mcr20a", }, >>>> + { }, >>>> +}; >>>> +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); >>>> + >>>> +static struct spi_driver mcr20a_driver = { >>>> + .id_table = mcr20a_device_id, >>>> + .driver = { >>>> + .of_match_table = of_match_ptr(mcr20a_of_match), >>>> + .name = "mcr20a", >>>> + }, >>>> + .probe = mcr20a_probe, >>>> + .remove = mcr20a_remove, >>>> +}; >>>> + >>>> +module_spi_driver(mcr20a_driver); >>>> + >>>> +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); >>>> +MODULE_LICENSE("GPL v2"); >>>> +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); >>>> diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h >>>> new file mode 100644 >>>> index 0000000..6da4fd0 >>>> --- /dev/null >>>> +++ b/drivers/net/ieee802154/mcr20a.h >>>> @@ -0,0 +1,498 @@ >>>> +/* >>>> + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller >>>> + * >>>> + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> >>>> + * >>>> + * This program is free software; you can redistribute it and/or modify >>>> + * it under the terms of the GNU General Public License version 2 >>>> + * as published by the Free Software Foundation. >>>> + * >>>> + * This program is distributed in the hope that it will be useful, >>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >>>> + * GNU General Public License for more details. >>>> + * >>>> + */ >>>> +#ifndef _MCR20A_H >>>> +#define _MCR20A_H >>>> + >>>> +/* Direct Accress Register */ >>>> +#define DAR_IRQ_STS1 0x00 >>>> +#define DAR_IRQ_STS2 0x01 >>>> +#define DAR_IRQ_STS3 0x02 >>>> +#define DAR_PHY_CTRL1 0x03 >>>> +#define DAR_PHY_CTRL2 0x04 >>>> +#define DAR_PHY_CTRL3 0x05 >>>> +#define DAR_RX_FRM_LEN 0x06 >>>> +#define DAR_PHY_CTRL4 0x07 >>>> +#define DAR_SRC_CTRL 0x08 >>>> +#define DAR_SRC_ADDRS_SUM_LSB 0x09 >>>> +#define DAR_SRC_ADDRS_SUM_MSB 0x0A >>>> +#define DAR_CCA1_ED_FNL 0x0B >>>> +#define DAR_EVENT_TMR_LSB 0x0C >>>> +#define DAR_EVENT_TMR_MSB 0x0D >>>> +#define DAR_EVENT_TMR_USB 0x0E >>>> +#define DAR_TIMESTAMP_LSB 0x0F >>>> +#define DAR_TIMESTAMP_MSB 0x10 >>>> +#define DAR_TIMESTAMP_USB 0x11 >>>> +#define DAR_T3CMP_LSB 0x12 >>>> +#define DAR_T3CMP_MSB 0x13 >>>> +#define DAR_T3CMP_USB 0x14 >>>> +#define DAR_T2PRIMECMP_LSB 0x15 >>>> +#define DAR_T2PRIMECMP_MSB 0x16 >>>> +#define DAR_T1CMP_LSB 0x17 >>>> +#define DAR_T1CMP_MSB 0x18 >>>> +#define DAR_T1CMP_USB 0x19 >>>> +#define DAR_T2CMP_LSB 0x1A >>>> +#define DAR_T2CMP_MSB 0x1B >>>> +#define DAR_T2CMP_USB 0x1C >>>> +#define DAR_T4CMP_LSB 0x1D >>>> +#define DAR_T4CMP_MSB 0x1E >>>> +#define DAR_T4CMP_USB 0x1F >>>> +#define DAR_PLL_INT0 0x20 >>>> +#define DAR_PLL_FRAC0_LSB 0x21 >>>> +#define DAR_PLL_FRAC0_MSB 0x22 >>>> +#define DAR_PA_PWR 0x23 >>>> +#define DAR_SEQ_STATE 0x24 >>>> +#define DAR_LQI_VALUE 0x25 >>>> +#define DAR_RSSI_CCA_CONT 0x26 >>>> +/*------------------ 0x27 */ >>>> +#define DAR_ASM_CTRL1 0x28 >>>> +#define DAR_ASM_CTRL2 0x29 >>>> +#define DAR_ASM_DATA_0 0x2A >>>> +#define DAR_ASM_DATA_1 0x2B >>>> +#define DAR_ASM_DATA_2 0x2C >>>> +#define DAR_ASM_DATA_3 0x2D >>>> +#define DAR_ASM_DATA_4 0x2E >>>> +#define DAR_ASM_DATA_5 0x2F >>>> +#define DAR_ASM_DATA_6 0x30 >>>> +#define DAR_ASM_DATA_7 0x31 >>>> +#define DAR_ASM_DATA_8 0x32 >>>> +#define DAR_ASM_DATA_9 0x33 >>>> +#define DAR_ASM_DATA_A 0x34 >>>> +#define DAR_ASM_DATA_B 0x35 >>>> +#define DAR_ASM_DATA_C 0x36 >>>> +#define DAR_ASM_DATA_D 0x37 >>>> +#define DAR_ASM_DATA_E 0x38 >>>> +#define DAR_ASM_DATA_F 0x39 >>>> +/*----------------------- 0x3A */ >>>> +#define DAR_OVERWRITE_VER 0x3B >>>> +#define DAR_CLK_OUT_CTRL 0x3C >>>> +#define DAR_PWR_MODES 0x3D >>>> +#define IAR_INDEX 0x3E >>>> +#define IAR_DATA 0x3F >>>> + >>>> +/* Indirect Resgister Memory */ >>>> +#define IAR_PART_ID 0x00 >>>> +#define IAR_XTAL_TRIM 0x01 >>>> +#define IAR_PMC_LP_TRIM 0x02 >>>> +#define IAR_MACPANID0_LSB 0x03 >>>> +#define IAR_MACPANID0_MSB 0x04 >>>> +#define IAR_MACSHORTADDRS0_LSB 0x05 >>>> +#define IAR_MACSHORTADDRS0_MSB 0x06 >>>> +#define IAR_MACLONGADDRS0_0 0x07 >>>> +#define IAR_MACLONGADDRS0_8 0x08 >>>> +#define IAR_MACLONGADDRS0_16 0x09 >>>> +#define IAR_MACLONGADDRS0_24 0x0A >>>> +#define IAR_MACLONGADDRS0_32 0x0B >>>> +#define IAR_MACLONGADDRS0_40 0x0C >>>> +#define IAR_MACLONGADDRS0_48 0x0D >>>> +#define IAR_MACLONGADDRS0_56 0x0E >>>> +#define IAR_RX_FRAME_FILTER 0x0F >>>> +#define IAR_PLL_INT1 0x10 >>>> +#define IAR_PLL_FRAC1_LSB 0x11 >>>> +#define IAR_PLL_FRAC1_MSB 0x12 >>>> +#define IAR_MACPANID1_LSB 0x13 >>>> +#define IAR_MACPANID1_MSB 0x14 >>>> +#define IAR_MACSHORTADDRS1_LSB 0x15 >>>> +#define IAR_MACSHORTADDRS1_MSB 0x16 >>>> +#define IAR_MACLONGADDRS1_0 0x17 >>>> +#define IAR_MACLONGADDRS1_8 0x18 >>>> +#define IAR_MACLONGADDRS1_16 0x19 >>>> +#define IAR_MACLONGADDRS1_24 0x1A >>>> +#define IAR_MACLONGADDRS1_32 0x1B >>>> +#define IAR_MACLONGADDRS1_40 0x1C >>>> +#define IAR_MACLONGADDRS1_48 0x1D >>>> +#define IAR_MACLONGADDRS1_56 0x1E >>>> +#define IAR_DUAL_PAN_CTRL 0x1F >>>> +#define IAR_DUAL_PAN_DWELL 0x20 >>>> +#define IAR_DUAL_PAN_STS 0x21 >>>> +#define IAR_CCA1_THRESH 0x22 >>>> +#define IAR_CCA1_ED_OFFSET_COMP 0x23 >>>> +#define IAR_LQI_OFFSET_COMP 0x24 >>>> +#define IAR_CCA_CTRL 0x25 >>>> +#define IAR_CCA2_CORR_PEAKS 0x26 >>>> +#define IAR_CCA2_CORR_THRESH 0x27 >>>> +#define IAR_TMR_PRESCALE 0x28 >>>> +/*-------------------- 0x29 */ >>>> +#define IAR_GPIO_DATA 0x2A >>>> +#define IAR_GPIO_DIR 0x2B >>>> +#define IAR_GPIO_PUL_EN 0x2C >>>> +#define IAR_GPIO_PUL_SEL 0x2D >>>> +#define IAR_GPIO_DS 0x2E >>>> +/*------------------ 0x2F */ >>>> +#define IAR_ANT_PAD_CTRL 0x30 >>>> +#define IAR_MISC_PAD_CTRL 0x31 >>>> +#define IAR_BSM_CTRL 0x32 >>>> +/*------------------- 0x33 */ >>>> +#define IAR_RNG 0x34 >>>> +#define IAR_RX_BYTE_COUNT 0x35 >>>> +#define IAR_RX_WTR_MARK 0x36 >>>> +#define IAR_SOFT_RESET 0x37 >>>> +#define IAR_TXDELAY 0x38 >>>> +#define IAR_ACKDELAY 0x39 >>>> +#define IAR_SEQ_MGR_CTRL 0x3A >>>> +#define IAR_SEQ_MGR_STS 0x3B >>>> +#define IAR_SEQ_T_STS 0x3C >>>> +#define IAR_ABORT_STS 0x3D >>>> +#define IAR_CCCA_BUSY_CNT 0x3E >>>> +#define IAR_SRC_ADDR_CHECKSUM1 0x3F >>>> +#define IAR_SRC_ADDR_CHECKSUM2 0x40 >>>> +#define IAR_SRC_TBL_VALID1 0x41 >>>> +#define IAR_SRC_TBL_VALID2 0x42 >>>> +#define IAR_FILTERFAIL_CODE1 0x43 >>>> +#define IAR_FILTERFAIL_CODE2 0x44 >>>> +#define IAR_SLOT_PRELOAD 0x45 >>>> +/*-------------------- 0x46 */ >>>> +#define IAR_CORR_VT 0x47 >>>> +#define IAR_SYNC_CTRL 0x48 >>>> +#define IAR_PN_LSB_0 0x49 >>>> +#define IAR_PN_LSB_1 0x4A >>>> +#define IAR_PN_MSB_0 0x4B >>>> +#define IAR_PN_MSB_1 0x4C >>>> +#define IAR_CORR_NVAL 0x4D >>>> +#define IAR_TX_MODE_CTRL 0x4E >>>> +#define IAR_SNF_THR 0x4F >>>> +#define IAR_FAD_THR 0x50 >>>> +#define IAR_ANT_AGC_CTRL 0x51 >>>> +#define IAR_AGC_THR1 0x52 >>>> +#define IAR_AGC_THR2 0x53 >>>> +#define IAR_AGC_HYS 0x54 >>>> +#define IAR_AFC 0x55 >>>> +/*------------------- 0x56 */ >>>> +/*------------------- 0x57 */ >>>> +#define IAR_PHY_STS 0x58 >>>> +#define IAR_RX_MAX_CORR 0x59 >>>> +#define IAR_RX_MAX_PREAMBLE 0x5A >>>> +#define IAR_RSSI 0x5B >>>> +/*------------------- 0x5C */ >>>> +/*------------------- 0x5D */ >>>> +#define IAR_PLL_DIG_CTRL 0x5E >>>> +#define IAR_VCO_CAL 0x5F >>>> +#define IAR_VCO_BEST_DIFF 0x60 >>>> +#define IAR_VCO_BIAS 0x61 >>>> +#define IAR_KMOD_CTRL 0x62 >>>> +#define IAR_KMOD_CAL 0x63 >>>> +#define IAR_PA_CAL 0x64 >>>> +#define IAR_PA_PWRCAL 0x65 >>>> +#define IAR_ATT_RSSI1 0x66 >>>> +#define IAR_ATT_RSSI2 0x67 >>>> +#define IAR_RSSI_OFFSET 0x68 >>>> +#define IAR_RSSI_SLOPE 0x69 >>>> +#define IAR_RSSI_CAL1 0x6A >>>> +#define IAR_RSSI_CAL2 0x6B >>>> +/*------------------- 0x6C */ >>>> +/*------------------- 0x6D */ >>>> +#define IAR_XTAL_CTRL 0x6E >>>> +#define IAR_XTAL_COMP_MIN 0x6F >>>> +#define IAR_XTAL_COMP_MAX 0x70 >>>> +#define IAR_XTAL_GM 0x71 >>>> +/*------------------- 0x72 */ >>>> +/*------------------- 0x73 */ >>>> +#define IAR_LNA_TUNE 0x74 >>>> +#define IAR_LNA_AGCGAIN 0x75 >>>> +/*------------------- 0x76 */ >>>> +/*------------------- 0x77 */ >>>> +#define IAR_CHF_PMA_GAIN 0x78 >>>> +#define IAR_CHF_IBUF 0x79 >>>> +#define IAR_CHF_QBUF 0x7A >>>> +#define IAR_CHF_IRIN 0x7B >>>> +#define IAR_CHF_QRIN 0x7C >>>> +#define IAR_CHF_IL 0x7D >>>> +#define IAR_CHF_QL 0x7E >>>> +#define IAR_CHF_CC1 0x7F >>>> +#define IAR_CHF_CCL 0x80 >>>> +#define IAR_CHF_CC2 0x81 >>>> +#define IAR_CHF_IROUT 0x82 >>>> +#define IAR_CHF_QROUT 0x83 >>>> +/*------------------- 0x84 */ >>>> +/*------------------- 0x85 */ >>>> +#define IAR_RSSI_CTRL 0x86 >>>> +/*------------------- 0x87 */ >>>> +/*------------------- 0x88 */ >>>> +#define IAR_PA_BIAS 0x89 >>>> +#define IAR_PA_TUNING 0x8A >>>> +/*------------------- 0x8B */ >>>> +/*------------------- 0x8C */ >>>> +#define IAR_PMC_HP_TRIM 0x8D >>>> +#define IAR_VREGA_TRIM 0x8E >>>> +/*------------------- 0x8F */ >>>> +/*------------------- 0x90 */ >>>> +#define IAR_VCO_CTRL1 0x91 >>>> +#define IAR_VCO_CTRL2 0x92 >>>> +/*------------------- 0x93 */ >>>> +/*------------------- 0x94 */ >>>> +#define IAR_ANA_SPARE_OUT1 0x95 >>>> +#define IAR_ANA_SPARE_OUT2 0x96 >>>> +#define IAR_ANA_SPARE_IN 0x97 >>>> +#define IAR_MISCELLANEOUS 0x98 >>>> +/*------------------- 0x99 */ >>>> +#define IAR_SEQ_MGR_OVRD0 0x9A >>>> +#define IAR_SEQ_MGR_OVRD1 0x9B >>>> +#define IAR_SEQ_MGR_OVRD2 0x9C >>>> +#define IAR_SEQ_MGR_OVRD3 0x9D >>>> +#define IAR_SEQ_MGR_OVRD4 0x9E >>>> +#define IAR_SEQ_MGR_OVRD5 0x9F >>>> +#define IAR_SEQ_MGR_OVRD6 0xA0 >>>> +#define IAR_SEQ_MGR_OVRD7 0xA1 >>>> +/*------------------- 0xA2 */ >>>> +#define IAR_TESTMODE_CTRL 0xA3 >>>> +#define IAR_DTM_CTRL1 0xA4 >>>> +#define IAR_DTM_CTRL2 0xA5 >>>> +#define IAR_ATM_CTRL1 0xA6 >>>> +#define IAR_ATM_CTRL2 0xA7 >>>> +#define IAR_ATM_CTRL3 0xA8 >>>> +/*------------------- 0xA9 */ >>>> +#define IAR_LIM_FE_TEST_CTRL 0xAA >>>> +#define IAR_CHF_TEST_CTRL 0xAB >>>> +#define IAR_VCO_TEST_CTRL 0xAC >>>> +#define IAR_PLL_TEST_CTRL 0xAD >>>> +#define IAR_PA_TEST_CTRL 0xAE >>>> +#define IAR_PMC_TEST_CTRL 0xAF >>>> +#define IAR_SCAN_DTM_PROTECT_1 0xFE >>>> +#define IAR_SCAN_DTM_PROTECT_0 0xFF >>>> + >>>> +/* IRQSTS1 bits */ >>>> +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) >>>> +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) >>>> +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) >>>> +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) >>>> +#define DAR_IRQSTS1_CCAIRQ BIT(3) >>>> +#define DAR_IRQSTS1_RXIRQ BIT(2) >>>> +#define DAR_IRQSTS1_TXIRQ BIT(1) >>>> +#define DAR_IRQSTS1_SEQIRQ BIT(0) >>>> + >>>> +/* IRQSTS2 bits */ >>>> +#define DAR_IRQSTS2_CRCVALID BIT(7) >>>> +#define DAR_IRQSTS2_CCA BIT(6) >>>> +#define DAR_IRQSTS2_SRCADDR BIT(5) >>>> +#define DAR_IRQSTS2_PI BIT(4) >>>> +#define DAR_IRQSTS2_TMRSTATUS BIT(3) >>>> +#define DAR_IRQSTS2_ASM_IRQ BIT(2) >>>> +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) >>>> +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) >>>> + >>>> +/* IRQSTS3 bits */ >>>> +#define DAR_IRQSTS3_TMR4MSK BIT(7) >>>> +#define DAR_IRQSTS3_TMR3MSK BIT(6) >>>> +#define DAR_IRQSTS3_TMR2MSK BIT(5) >>>> +#define DAR_IRQSTS3_TMR1MSK BIT(4) >>>> +#define DAR_IRQSTS3_TMR4IRQ BIT(3) >>>> +#define DAR_IRQSTS3_TMR3IRQ BIT(2) >>>> +#define DAR_IRQSTS3_TMR2IRQ BIT(1) >>>> +#define DAR_IRQSTS3_TMR1IRQ BIT(0) >>>> + >>>> +/* PHY_CTRL1 bits */ >>>> +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) >>>> +#define DAR_PHY_CTRL1_SLOTTED BIT(6) >>>> +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) >>>> +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 >>>> +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) >>>> +#define DAR_PHY_CTRL1_AUTOACK BIT(3) >>>> +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 >>>> + >>>> +/* PHY_CTRL2 bits */ >>>> +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) >>>> +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) >>>> +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) >>>> +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) >>>> +#define DAR_PHY_CTRL2_CCAMSK BIT(3) >>>> +#define DAR_PHY_CTRL2_RXMSK BIT(2) >>>> +#define DAR_PHY_CTRL2_TXMSK BIT(1) >>>> +#define DAR_PHY_CTRL2_SEQMSK BIT(0) >>>> + >>>> +/* PHY_CTRL3 bits */ >>>> +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) >>>> +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) >>>> +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) >>>> +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) >>>> +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) >>>> +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) >>>> +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) >>>> + >>>> +/* RX_FRM_LEN bits */ >>>> +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) >>>> + >>>> +/* PHY_CTRL4 bits */ >>>> +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) >>>> +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) >>>> +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) >>>> +#define DAR_PHY_CTRL4_CCATYPE (3) >>>> +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) >>>> +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) >>>> +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) >>>> +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) >>>> +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) >>>> + >>>> +/* SRC_CTRL bits */ >>>> +#define DAR_SRC_CTRL_INDEX (0x0F) >>>> +#define DAR_SRC_CTRL_INDEX_SHIFT (4) >>>> +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) >>>> +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) >>>> +#define DAR_SRC_CTRL_INDEX_EN BIT(1) >>>> +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) >>>> + >>>> +/* DAR_ASM_CTRL1 bits */ >>>> +#define DAR_ASM_CTRL1_CLEAR BIT(7) >>>> +#define DAR_ASM_CTRL1_START BIT(6) >>>> +#define DAR_ASM_CTRL1_SELFTST BIT(5) >>>> +#define DAR_ASM_CTRL1_CTR BIT(4) >>>> +#define DAR_ASM_CTRL1_CBC BIT(3) >>>> +#define DAR_ASM_CTRL1_AES BIT(2) >>>> +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) >>>> + >>>> +/* DAR_ASM_CTRL2 bits */ >>>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) >>>> +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) >>>> +#define DAR_ASM_CTRL2_TSTPAS BIT(1) >>>> + >>>> +/* DAR_CLK_OUT_CTRL bits */ >>>> +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) >>>> +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) >>>> +#define DAR_CLK_OUT_CTRL_SR BIT(5) >>>> +#define DAR_CLK_OUT_CTRL_DS BIT(4) >>>> +#define DAR_CLK_OUT_CTRL_EN BIT(3) >>>> +#define DAR_CLK_OUT_CTRL_DIV (7) >>>> + >>>> +/* DAR_PWR_MODES bits */ >>>> +#define DAR_PWR_MODES_XTAL_READY BIT(5) >>>> +#define DAR_PWR_MODES_XTALEN BIT(4) >>>> +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) >>>> +#define DAR_PWR_MODES_AUTODOZE BIT(1) >>>> +#define DAR_PWR_MODES_PMC_MODE BIT(0) >>>> + >>>> +/* RX_FRAME_FILTER bits */ >>>> +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) >>>> +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) >>>> +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) >>>> +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) >>>> +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) >>>> +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) >>>> +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) >>>> +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) >>>> + >>>> +/* DUAL_PAN_CTRL bits */ >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) >>>> +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) >>>> +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) >>>> +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) >>>> +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) >>>> + >>>> +/* DUAL_PAN_STS bits */ >>>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) >>>> +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) >>>> +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) >>>> + >>>> +/* CCA_CTRL bits */ >>>> +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) >>>> +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) >>>> +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) >>>> +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) >>>> +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) >>>> + >>>> +/* ANT_PAD_CTRL bits */ >>>> +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) >>>> +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) >>>> + >>>> +/* MISC_PAD_CTRL bits */ >>>> +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) >>>> +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) >>>> +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) >>>> +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) >>>> + >>>> +/* ANT_AGC_CTRL bits */ >>>> +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) >>>> +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) >>>> +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) >>>> +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) >>>> + >>>> +/* BSM_CTRL bits */ >>>> +#define BSM_CTRL_BSM_EN (1) >>>> + >>>> +/* SOFT_RESET bits */ >>>> +#define IAR_SOFT_RESET_SOG_RST BIT(7) >>>> +#define IAR_SOFT_RESET_REGS_RST BIT(4) >>>> +#define IAR_SOFT_RESET_PLL_RST BIT(3) >>>> +#define IAR_SOFT_RESET_TX_RST BIT(2) >>>> +#define IAR_SOFT_RESET_RX_RST BIT(1) >>>> +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) >>>> + >>>> +/* SEQ_MGR_CTRL bits */ >>>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) >>>> +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) >>>> +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) >>>> +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) >>>> +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) >>>> +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) >>>> +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) >>>> +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) >>>> + >>>> +/* SEQ_MGR_STS bits */ >>>> +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) >>>> +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) >>>> +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) >>>> +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) >>>> +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) >>>> +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) >>>> + >>>> +/* ABORT_STS bits */ >>>> +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) >>>> +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) >>>> +#define IAR_ABORT_STS_SW_ABORTED BIT(0) >>>> + >>>> +/* IAR_FILTERFAIL_CODE2 bits */ >>>> +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) >>>> +#define IAR_FILTERFAIL_CODE2_9_8 (3) >>>> + >>>> +/* PHY_STS bits */ >>>> +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) >>>> +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) >>>> +#define IAR_PHY_STS_PLL_LOCK BIT(5) >>>> +#define IAR_PHY_STS_CRCVALID BIT(3) >>>> +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) >>>> +#define IAR_PHY_STS_SFD_DET BIT(1) >>>> +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) >>>> + >>>> +/* TESTMODE_CTRL bits */ >>>> +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) >>>> +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) >>>> +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) >>>> +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) >>>> +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) >>>> + >>>> +/* DTM_CTRL1 bits */ >>>> +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) >>>> +#define IAR_DTM_CTRL1_DTM_EN BIT(6) >>>> +#define IAR_DTM_CTRL1_PAGE5 BIT(5) >>>> +#define IAR_DTM_CTRL1_PAGE4 BIT(4) >>>> +#define IAR_DTM_CTRL1_PAGE3 BIT(3) >>>> +#define IAR_DTM_CTRL1_PAGE2 BIT(2) >>>> +#define IAR_DTM_CTRL1_PAGE1 BIT(1) >>>> +#define IAR_DTM_CTRL1_PAGE0 BIT(0) >>>> + >>>> +/* TX_MODE_CTRL */ >>>> +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) >>>> +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) >>>> +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) >>>> +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) >>>> +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) >>>> + >>>> +#define TX_MODE_CTRL_DTS_MASK (7) >>>> + >>>> +#endif /* _MCR20A_H */ >>> The rest looks fine. >>> >>> regards >>> Stefan Schmidt > > With the small nitpick from above fixed I would go ahead and apply this patchset tomorrow. > > Let me know if you will send a new version or if I should amend the small change myself. > > regards > Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, 2018-02-19 12:29 GMT-05:00 Michael Richardson <mcr@sandelman.ca>: > Xue Liu <liuxuenetmail@gmail.com> wrote: > > This driver implements a subset of ieee802154_ops. It has no support > > for CSMA due to lack of hardware support. It has currently no support > > for its proprietary feature: Dual PAN. > > I think you mean, that the driver has no support for the MCR20A Dual > Pan feature, because the 802.15.4 layer has no way to deal with it. > > A suggestion is to create two virtual devices! > If they can run on two different frequencies: Create two wpan-phy's - yes. (Which is a _device_ class) If they run on two different PANs: Create two wpan interfaces on top of one wpan phy. ---- But so far I remember it is some crazy "I can transmit on different pans with internal channel hopping by doing hardware offload" (It's still _one_ radio, in sense one transmit/receive medium) then do: nothing of that above - this need to be handled by some internal subsystem handling, if a use case exists. - Alex -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, 2018-02-19 18:49 GMT-05:00 Xue Liu <liuxuenetmail@gmail.com>: > Hello. > > I have one more question about ieee802154_ops.ed function. How to test > this function ? Thanks This function is/was never used by the subsystem. It has historical reason _why_ this function is still there... The original repository had "something" half working of MLME-SCAN (In my opinion). They got this callback there but then nothing more... What you could introduce is a netlink notifier command which reports by reaching some threshold, e.g. iwpan phy0 get edthresh $VAL -> blocks until ed reached above thresh, which should happen when transmit is going on on your channel... Or just a get command? There exists also various way to receive ED values, we should offer them as well than just trigger it from outside, e.g. after each frame rx... this need to be collected at a main point. - Alex -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello. On 02/20/2018 12:59 AM, Xue Liu wrote: > Hello > > On 19 February 2018 at 23:37, Stefan Schmidt <stefan@osg.samsung.com> wrote: >> Hello. >> >> >> On 02/19/2018 10:40 PM, Xue Liu wrote: >>> Hello Stefan, >>> >>> Thanks for the second review. >>> >>> On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: >>>> Hello. >>>> >>>> On Mon, 2018-02-19 at 11:51, Xue Liu wrote: >>>> >>>>> + >>>>> +#ifdef DEBUG >>>>> + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, >>>>> + lp->rx_buf, len, 0); >>>>> + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); >>>>> +#endif >>>> Here, as well as in the corresponding TX hex_dump call I wonder how to better >>>> make use of it. Recompiling the driver to get the dump is not really nice. >>>> Having a way to have this enabled during runtime might be better. And across >>>> all drivers. Just thinking out loud here. Not saying you need to be he one >>>> implementing it. What do you think? >>>> >>>> >>> using module parameters may a solution. >> This would be an option but I was thinking more about towards a tracepoints like approach where we can dynamically enable or disable the >> hexdump or other debug functionality. Loading and unloading the module to change this is a bit cumbersome. This code might not even be a >> module at all but compiled in. >> >> I need to check what the kernel infra offers here and how other subsystems use it. >> > Do you mean "dynamic debug" > https://www.kernel.org/doc/html/v4.11/admin-guide/dynamic-debug-howto.html > ? > I saw there is all a version for print_hex_dump. Indeed, that would be a good way of doing it. Switch to print_hex_dump_debug() and pr_debug and eliminate the ifdef. That way it is always compiled in but off by default and can be dynamically enabled during runtime. Are you ok with changing this or would you prefer to stay with your current construct? regards Stefan Schmidt -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello, On 20 February 2018 at 04:44, Alexander Aring <alex.aring@gmail.com> wrote: > Hi, > > 2018-02-19 18:49 GMT-05:00 Xue Liu <liuxuenetmail@gmail.com>: >> Hello. >> >> I have one more question about ieee802154_ops.ed function. How to test >> this function ? Thanks > > This function is/was never used by the subsystem. It has historical > reason _why_ this function is still there... The original repository > had "something" half working of MLME-SCAN (In my opinion). They got > this callback there but then nothing more... > > What you could introduce is a netlink notifier command which reports > by reaching some threshold, e.g. > > iwpan phy0 get edthresh $VAL -> blocks until ed reached above thresh, > which should happen when transmit is going on on your channel... > > Or just a get command? > > There exists also various way to receive ED values, we should offer > them as well than just trigger it from outside, e.g. after each frame > rx... this need to be collected at a main point. > > - Alex Thanks for all the explanation. Regards, Xue Liu -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello, On 20 February 2018 at 10:27, Stefan Schmidt <stefan@osg.samsung.com> wrote: > Hello. > > > On 02/20/2018 12:59 AM, Xue Liu wrote: >> Hello >> >> On 19 February 2018 at 23:37, Stefan Schmidt <stefan@osg.samsung.com> wrote: >>> Hello. >>> >>> >>> On 02/19/2018 10:40 PM, Xue Liu wrote: >>>> Hello Stefan, >>>> >>>> Thanks for the second review. >>>> >>>> On 19 February 2018 at 17:31, Stefan Schmidt <stefan@osg.samsung.com> wrote: >>>>> Hello. >>>>> >>>>> On Mon, 2018-02-19 at 11:51, Xue Liu wrote: >>>>> >>>>>> + >>>>>> +#ifdef DEBUG >>>>>> + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, >>>>>> + lp->rx_buf, len, 0); >>>>>> + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); >>>>>> +#endif >>>>> Here, as well as in the corresponding TX hex_dump call I wonder how to better >>>>> make use of it. Recompiling the driver to get the dump is not really nice. >>>>> Having a way to have this enabled during runtime might be better. And across >>>>> all drivers. Just thinking out loud here. Not saying you need to be he one >>>>> implementing it. What do you think? >>>>> >>>>> >>>> using module parameters may a solution. >>> This would be an option but I was thinking more about towards a tracepoints like approach where we can dynamically enable or disable the >>> hexdump or other debug functionality. Loading and unloading the module to change this is a bit cumbersome. This code might not even be a >>> module at all but compiled in. >>> >>> I need to check what the kernel infra offers here and how other subsystems use it. >>> >> Do you mean "dynamic debug" >> https://www.kernel.org/doc/html/v4.11/admin-guide/dynamic-debug-howto.html >> ? >> I saw there is all a version for print_hex_dump. > > Indeed, that would be a good way of doing it. Switch to print_hex_dump_debug() and pr_debug and eliminate the ifdef. > That way it is always compiled in but off by default and can be dynamically enabled during runtime. > > Are you ok with changing this or would you prefer to stay with your current construct? > I will change the functions to print_hex_dump_debug() and pr_debug() and post a new patch. > regards > Stefan Schmidt Regards, Xue Liu -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hello, On 20 February 2018 at 04:37, Alexander Aring <alex.aring@gmail.com> wrote: > Hi, > > 2018-02-19 12:29 GMT-05:00 Michael Richardson <mcr@sandelman.ca>: >> Xue Liu <liuxuenetmail@gmail.com> wrote: >> > This driver implements a subset of ieee802154_ops. It has no support >> > for CSMA due to lack of hardware support. It has currently no support >> > for its proprietary feature: Dual PAN. >> >> I think you mean, that the driver has no support for the MCR20A Dual >> Pan feature, because the 802.15.4 layer has no way to deal with it. >> >> A suggestion is to create two virtual devices! >> > > If they can run on two different frequencies: > > Create two wpan-phy's - yes. (Which is a _device_ class) > Yes. It can working at two different frequencies. I think it is the right way to go. > If they run on two different PANs: > > Create two wpan interfaces on top of one wpan phy. > > ---- > > But so far I remember it is some crazy "I can transmit on different > pans with internal channel hopping by doing hardware offload" (It's > still _one_ radio, in sense one transmit/receive medium) then do: > > nothing of that above - this need to be handled by some internal > subsystem handling, if a use case exists. > > - Alex -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig index 303ba41..8782f56 100644 --- a/drivers/net/ieee802154/Kconfig +++ b/drivers/net/ieee802154/Kconfig @@ -104,3 +104,14 @@ config IEEE802154_CA8210_DEBUGFS exposes a debugfs node for each CA8210 instance which allows direct use of the Cascoda API, exposing the 802.15.4 MAC management entities. + +config IEEE802154_MCR20A + tristate "MCR20A transceiver driver" + depends on IEEE802154_DRIVERS && MAC802154 + depends on SPI + ---help--- + Say Y here to enable the MCR20A SPI 802.15.4 wireless + controller. + + This driver can also be built as a module. To do so, say M here. + the module will be called 'mcr20a'. diff --git a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile index bea1de5..104744d 100644 --- a/drivers/net/ieee802154/Makefile +++ b/drivers/net/ieee802154/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o +obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c new file mode 100644 index 0000000..90712e9 --- /dev/null +++ b/drivers/net/ieee802154/mcr20a.c @@ -0,0 +1,1460 @@ +/* + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller + * + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/gpio.h> +#include <linux/spi/spi.h> +#include <linux/workqueue.h> +#include <linux/interrupt.h> +#include <linux/skbuff.h> +#include <linux/of_gpio.h> +#include <linux/regmap.h> +#include <linux/ieee802154.h> +#include <linux/debugfs.h> + +#include <net/mac802154.h> +#include <net/cfg802154.h> + +#include <linux/device.h> + +#include "mcr20a.h" + +#define SPI_COMMAND_BUFFER 3 + +#define REGISTER_READ BIT(7) +#define REGISTER_WRITE (0 << 7) +#define REGISTER_ACCESS (0 << 6) +#define PACKET_BUFF_BURST_ACCESS BIT(6) +#define PACKET_BUFF_BYTE_ACCESS BIT(5) + +#define MCR20A_WRITE_REG(x) (x) +#define MCR20A_READ_REG(x) (REGISTER_READ | (x)) +#define MCR20A_BURST_READ_PACKET_BUF (0xC0) +#define MCR20A_BURST_WRITE_PACKET_BUF (0x40) + +#define MCR20A_CMD_REG 0x80 +#define MCR20A_CMD_REG_MASK 0x3f +#define MCR20A_CMD_WRITE 0x40 +#define MCR20A_CMD_FB 0x20 + +/* Number of Interrupt Request Status Register */ +#define MCR20A_IRQSTS_NUM 2 /* only IRQ_STS1 and IRQ_STS2 */ + +/* MCR20A CCA Type */ +enum { + MCR20A_CCA_ED, // energy detect - CCA bit not active, + // not to be used for T and CCCA sequences + MCR20A_CCA_MODE1, // energy detect - CCA bit ACTIVE + MCR20A_CCA_MODE2, // 802.15.4 compliant signal detect - CCA bit ACTIVE + MCR20A_CCA_MODE3 +}; + +enum { + MCR20A_XCVSEQ_IDLE = 0x00, + MCR20A_XCVSEQ_RX = 0x01, + MCR20A_XCVSEQ_TX = 0x02, + MCR20A_XCVSEQ_CCA = 0x03, + MCR20A_XCVSEQ_TR = 0x04, + MCR20A_XCVSEQ_CCCA = 0x05, +}; + +/* IEEE-802.15.4 defined constants (2.4 GHz logical channels) */ +#define MCR20A_MIN_CHANNEL (11) +#define MCR20A_MAX_CHANNEL (26) +#define MCR20A_CHANNEL_SPACING (5) + +/* MCR20A CCA Threshold constans */ +#define MCR20A_MIN_CCA_THRESHOLD (0x6EU) +#define MCR20A_MAX_CCA_THRESHOLD (0x00U) + +/* version 0C */ +#define MCR20A_OVERWRITE_VERSION (0x0C) + +/* MCR20A PLL configurations */ +static const u8 PLL_INT[16] = { + /* 2405 */ 0x0B, /* 2410 */ 0x0B, /* 2415 */ 0x0B, + /* 2420 */ 0x0B, /* 2425 */ 0x0B, /* 2430 */ 0x0B, + /* 2435 */ 0x0C, /* 2440 */ 0x0C, /* 2445 */ 0x0C, + /* 2450 */ 0x0C, /* 2455 */ 0x0C, /* 2460 */ 0x0C, + /* 2465 */ 0x0D, /* 2470 */ 0x0D, /* 2475 */ 0x0D, + /* 2480 */ 0x0D +}; + +static const u8 PLL_FRAC[16] = { + /* 2405 */ 0x28, /* 2410 */ 0x50, /* 2415 */ 0x78, + /* 2420 */ 0xA0, /* 2425 */ 0xC8, /* 2430 */ 0xF0, + /* 2435 */ 0x18, /* 2440 */ 0x40, /* 2445 */ 0x68, + /* 2450 */ 0x90, /* 2455 */ 0xB8, /* 2460 */ 0xE0, + /* 2465 */ 0x08, /* 2470 */ 0x30, /* 2475 */ 0x58, + /* 2480 */ 0x80 +}; + +static const struct reg_sequence mar20a_iar_overwrites[] = { + { IAR_MISC_PAD_CTRL, 0x02 }, + { IAR_VCO_CTRL1, 0xB3 }, + { IAR_VCO_CTRL2, 0x07 }, + { IAR_PA_TUNING, 0x71 }, + { IAR_CHF_IBUF, 0x2F }, + { IAR_CHF_QBUF, 0x2F }, + { IAR_CHF_IRIN, 0x24 }, + { IAR_CHF_QRIN, 0x24 }, + { IAR_CHF_IL, 0x24 }, + { IAR_CHF_QL, 0x24 }, + { IAR_CHF_CC1, 0x32 }, + { IAR_CHF_CCL, 0x1D }, + { IAR_CHF_CC2, 0x2D }, + { IAR_CHF_IROUT, 0x24 }, + { IAR_CHF_QROUT, 0x24 }, + { IAR_PA_CAL, 0x28 }, + { IAR_AGC_THR1, 0x55 }, + { IAR_AGC_THR2, 0x2D }, + { IAR_ATT_RSSI1, 0x5F }, + { IAR_ATT_RSSI2, 0x8F }, + { IAR_RSSI_OFFSET, 0x61 }, + { IAR_CHF_PMA_GAIN, 0x03 }, + { IAR_CCA1_THRESH, 0x50 }, + { IAR_CORR_NVAL, 0x13 }, + { IAR_ACKDELAY, 0x3D }, +}; + +#define MCR20A_VALID_CHANNELS (0x07FFF800) + +struct mcr20a_platform_data { + int rst_gpio; +}; + +#define MCR20A_MAX_BUF (127) + +#define printdev(X) (&X->spi->dev) + +/* regmap information for Direct Access Register (DAR) access */ +#define MCR20A_DAR_WRITE 0x01 +#define MCR20A_DAR_READ 0x00 +#define MCR20A_DAR_NUMREGS 0x3F + +/* regmap information for Indirect Access Register (IAR) access */ +#define MCR20A_IAR_ACCESS 0x80 +#define MCR20A_IAR_NUMREGS 0xBEFF + +/* Read/Write SPI Commands for DAR and IAR registers. */ +#define MCR20A_READSHORT(reg) ((reg) << 1) +#define MCR20A_WRITESHORT(reg) ((reg) << 1 | 1) +#define MCR20A_READLONG(reg) (1 << 15 | (reg) << 5) +#define MCR20A_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) + +/* Type definitions for link configuration of instantiable layers */ +#define MCR20A_PHY_INDIRECT_QUEUE_SIZE (12) + +static bool +mcr20a_dar_writeable(struct device *dev, unsigned int reg) +{ + switch (reg) { + case DAR_IRQ_STS1: + case DAR_IRQ_STS2: + case DAR_IRQ_STS3: + case DAR_PHY_CTRL1: + case DAR_PHY_CTRL2: + case DAR_PHY_CTRL3: + case DAR_PHY_CTRL4: + case DAR_SRC_CTRL: + case DAR_SRC_ADDRS_SUM_LSB: + case DAR_SRC_ADDRS_SUM_MSB: + case DAR_T3CMP_LSB: + case DAR_T3CMP_MSB: + case DAR_T3CMP_USB: + case DAR_T2PRIMECMP_LSB: + case DAR_T2PRIMECMP_MSB: + case DAR_T1CMP_LSB: + case DAR_T1CMP_MSB: + case DAR_T1CMP_USB: + case DAR_T2CMP_LSB: + case DAR_T2CMP_MSB: + case DAR_T2CMP_USB: + case DAR_T4CMP_LSB: + case DAR_T4CMP_MSB: + case DAR_T4CMP_USB: + case DAR_PLL_INT0: + case DAR_PLL_FRAC0_LSB: + case DAR_PLL_FRAC0_MSB: + case DAR_PA_PWR: + /* no DAR_ACM */ + case DAR_OVERWRITE_VER: + case DAR_CLK_OUT_CTRL: + case DAR_PWR_MODES: + return true; + default: + return false; + } +} + +static bool +mcr20a_dar_readable(struct device *dev, unsigned int reg) +{ + bool rc; + + /* all writeable are also readable */ + rc = mcr20a_dar_writeable(dev, reg); + if (rc) + return rc; + + /* readonly regs */ + switch (reg) { + case DAR_RX_FRM_LEN: + case DAR_CCA1_ED_FNL: + case DAR_EVENT_TMR_LSB: + case DAR_EVENT_TMR_MSB: + case DAR_EVENT_TMR_USB: + case DAR_TIMESTAMP_LSB: + case DAR_TIMESTAMP_MSB: + case DAR_TIMESTAMP_USB: + case DAR_SEQ_STATE: + case DAR_LQI_VALUE: + case DAR_RSSI_CCA_CONT: + return true; + default: + return false; + } +} + +static bool +mcr20a_dar_volatile(struct device *dev, unsigned int reg) +{ + /* can be changed during runtime */ + switch (reg) { + case DAR_IRQ_STS1: + case DAR_IRQ_STS2: + case DAR_IRQ_STS3: + /* use them in spi_async and regmap so it's volatile */ + return true; + default: + return false; + } +} + +static bool +mcr20a_dar_precious(struct device *dev, unsigned int reg) +{ + /* don't clear irq line on read */ + switch (reg) { + case DAR_IRQ_STS1: + case DAR_IRQ_STS2: + case DAR_IRQ_STS3: + return true; + default: + return false; + } +} + +static const struct regmap_config mcr20a_dar_regmap = { + .name = "mcr20a_dar", + .reg_bits = 8, + .val_bits = 8, + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE, + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ, + .cache_type = REGCACHE_RBTREE, + .writeable_reg = mcr20a_dar_writeable, + .readable_reg = mcr20a_dar_readable, + .volatile_reg = mcr20a_dar_volatile, + .precious_reg = mcr20a_dar_precious, + .fast_io = true, + .can_multi_write = true, +}; + +static bool +mcr20a_iar_writeable(struct device *dev, unsigned int reg) +{ + switch (reg) { + case IAR_XTAL_TRIM: + case IAR_PMC_LP_TRIM: + case IAR_MACPANID0_LSB: + case IAR_MACPANID0_MSB: + case IAR_MACSHORTADDRS0_LSB: + case IAR_MACSHORTADDRS0_MSB: + case IAR_MACLONGADDRS0_0: + case IAR_MACLONGADDRS0_8: + case IAR_MACLONGADDRS0_16: + case IAR_MACLONGADDRS0_24: + case IAR_MACLONGADDRS0_32: + case IAR_MACLONGADDRS0_40: + case IAR_MACLONGADDRS0_48: + case IAR_MACLONGADDRS0_56: + case IAR_RX_FRAME_FILTER: + case IAR_PLL_INT1: + case IAR_PLL_FRAC1_LSB: + case IAR_PLL_FRAC1_MSB: + case IAR_MACPANID1_LSB: + case IAR_MACPANID1_MSB: + case IAR_MACSHORTADDRS1_LSB: + case IAR_MACSHORTADDRS1_MSB: + case IAR_MACLONGADDRS1_0: + case IAR_MACLONGADDRS1_8: + case IAR_MACLONGADDRS1_16: + case IAR_MACLONGADDRS1_24: + case IAR_MACLONGADDRS1_32: + case IAR_MACLONGADDRS1_40: + case IAR_MACLONGADDRS1_48: + case IAR_MACLONGADDRS1_56: + case IAR_DUAL_PAN_CTRL: + case IAR_DUAL_PAN_DWELL: + case IAR_CCA1_THRESH: + case IAR_CCA1_ED_OFFSET_COMP: + case IAR_LQI_OFFSET_COMP: + case IAR_CCA_CTRL: + case IAR_CCA2_CORR_PEAKS: + case IAR_CCA2_CORR_THRESH: + case IAR_TMR_PRESCALE: + case IAR_ANT_PAD_CTRL: + case IAR_MISC_PAD_CTRL: + case IAR_BSM_CTRL: + case IAR_RNG: + case IAR_RX_WTR_MARK: + case IAR_SOFT_RESET: + case IAR_TXDELAY: + case IAR_ACKDELAY: + case IAR_CORR_NVAL: + case IAR_ANT_AGC_CTRL: + case IAR_AGC_THR1: + case IAR_AGC_THR2: + case IAR_PA_CAL: + case IAR_ATT_RSSI1: + case IAR_ATT_RSSI2: + case IAR_RSSI_OFFSET: + case IAR_XTAL_CTRL: + case IAR_CHF_PMA_GAIN: + case IAR_CHF_IBUF: + case IAR_CHF_QBUF: + case IAR_CHF_IRIN: + case IAR_CHF_QRIN: + case IAR_CHF_IL: + case IAR_CHF_QL: + case IAR_CHF_CC1: + case IAR_CHF_CCL: + case IAR_CHF_CC2: + case IAR_CHF_IROUT: + case IAR_CHF_QROUT: + case IAR_PA_TUNING: + case IAR_VCO_CTRL1: + case IAR_VCO_CTRL2: + return true; + default: + return false; + } +} + +static bool +mcr20a_iar_readable(struct device *dev, unsigned int reg) +{ + bool rc; + + /* all writeable are also readable */ + rc = mcr20a_iar_writeable(dev, reg); + if (rc) + return rc; + + /* readonly regs */ + switch (reg) { + case IAR_PART_ID: + case IAR_DUAL_PAN_STS: + case IAR_RX_BYTE_COUNT: + case IAR_FILTERFAIL_CODE1: + case IAR_FILTERFAIL_CODE2: + case IAR_RSSI: + return true; + default: + return false; + } +} + +static bool +mcr20a_iar_volatile(struct device *dev, unsigned int reg) +{ +/* can be changed during runtime */ + switch (reg) { + case IAR_DUAL_PAN_STS: + case IAR_RX_BYTE_COUNT: + case IAR_FILTERFAIL_CODE1: + case IAR_FILTERFAIL_CODE2: + case IAR_RSSI: + return true; + default: + return false; + } +} + +static const struct regmap_config mcr20a_iar_regmap = { + .name = "mcr20a_iar", + .reg_bits = 16, + .val_bits = 8, + .write_flag_mask = REGISTER_ACCESS | REGISTER_WRITE | IAR_INDEX, + .read_flag_mask = REGISTER_ACCESS | REGISTER_READ | IAR_INDEX, + .cache_type = REGCACHE_RBTREE, + .writeable_reg = mcr20a_iar_writeable, + .readable_reg = mcr20a_iar_readable, + .volatile_reg = mcr20a_iar_volatile, + .fast_io = true, +}; + +struct mcr20a_local { + struct spi_device *spi; + + struct ieee802154_hw *hw; + struct mcr20a_platform_data *pdata; + struct regmap *regmap_dar; + struct regmap *regmap_iar; + + u8 *buf; + + bool is_tx; + + /* for writing tx buffer */ + struct spi_message tx_buf_msg; + u8 tx_header[1]; + /* burst buffer write command */ + struct spi_transfer tx_xfer_header; + u8 tx_len[1]; + /* len of tx packet */ + struct spi_transfer tx_xfer_len; + /* data of tx packet */ + struct spi_transfer tx_xfer_buf; + struct sk_buff *tx_skb; + + /* for read length rxfifo */ + struct spi_message reg_msg; + u8 reg_cmd[1]; + u8 reg_data[MCR20A_IRQSTS_NUM]; + struct spi_transfer reg_xfer_cmd; + struct spi_transfer reg_xfer_data; + + /* receive handling */ + struct spi_message rx_buf_msg; + u8 rx_header[1]; + struct spi_transfer rx_xfer_header; + u8 rx_lqi[1]; + struct spi_transfer rx_xfer_lqi; + u8 rx_buf[MCR20A_MAX_BUF]; + struct spi_transfer rx_xfer_buf; + + /* isr handling for reading intstat */ + struct spi_message irq_msg; + u8 irq_header[1]; + u8 irq_data[MCR20A_IRQSTS_NUM]; + struct spi_transfer irq_xfer_data; + struct spi_transfer irq_xfer_header; +}; + +static void +mcr20a_write_tx_buf_complete(void *context) +{ + struct mcr20a_local *lp = context; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + lp->reg_msg.complete = NULL; + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); + lp->reg_data[0] = MCR20A_XCVSEQ_TX; + lp->reg_xfer_data.len = 1; + + ret = spi_async(lp->spi, &lp->reg_msg); + if (ret) + dev_err(printdev(lp), "failed to set SEQ TX\n"); +} + +static int +mcr20a_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) +{ + struct mcr20a_local *lp = hw->priv; + + dev_dbg(printdev(lp), "%s\n", __func__); + + lp->tx_skb = skb; + +#ifdef DEBUG + print_hex_dump(KERN_INFO, "mcr20a write: ", DUMP_PREFIX_OFFSET, 16, 1, + skb->data, skb->len, 0); +#endif + + lp->is_tx = 1; + + lp->reg_msg.complete = NULL; + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_PHY_CTRL1); + lp->reg_data[0] = MCR20A_XCVSEQ_IDLE; + lp->reg_xfer_data.len = 1; + + return spi_async(lp->spi, &lp->reg_msg); +} + +static int +mcr20a_ed(struct ieee802154_hw *hw, u8 *level) +{ + struct mcr20a_local *lp = hw->priv; + unsigned int val = 0; + u8 energy_level; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + ret = regmap_read(lp->regmap_dar, DAR_PHY_CTRL1, &val); + if (0x0 == (val & DAR_PHY_CTRL1_XCVSEQ_MASK)) { + /* Change CCA Type to 00 - Energy Detect */ + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL4, 0x0); + /* Perform ED */ + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, + MCR20A_XCVSEQ_CCA); + val = 0; + while ((DAR_IRQSTS1_CCAIRQ & val) != DAR_IRQSTS1_CCAIRQ) + ret = regmap_read(lp->regmap_dar, DAR_IRQ_STS1, &val); + /* the energy level scaled in 0x00 - 0xFF */ + ret = regmap_read(lp->regmap_dar, DAR_CCA1_ED_FNL, &val); + energy_level = (u8)val; + + if (energy_level >= 90) { + /* ED value is below minimum. Return 0x00. */ + energy_level = 0x00; + } else if (energy_level <= 26) { + /* ED value is above maximum. Return 0xFF. */ + energy_level = 0xFF; + } else { + /* Energy level (-90 dBm to -26 dBm ) varies form 0 to 64 */ + energy_level = (90 - energy_level); + energy_level <<= 2; + } + + *level = energy_level; + } else { + /* switch to IDLE at first */ + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, + MCR20A_XCVSEQ_IDLE); + } + + return 0; +} + +static int +mcr20a_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) +{ + struct mcr20a_local *lp = hw->priv; + int ret; + + dev_dbg(printdev(lp), "mcr20a_set_channell(): %d\n", channel); + + /* freqency = ((PLL_INT+64) + (PLL_FRAC/65536)) * 32 MHz */ + ret = regmap_write(lp->regmap_dar, DAR_PLL_INT0, PLL_INT[channel - 11]); + if (ret) + return ret; + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_LSB, 0x00); + if (ret) + return ret; + ret = regmap_write(lp->regmap_dar, DAR_PLL_FRAC0_MSB, + PLL_FRAC[channel - 11]); + if (ret) + return ret; + + return 0; +} + +static int +mcr20a_start(struct ieee802154_hw *hw) +{ + struct mcr20a_local *lp = hw->priv; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* No slotted operation */ + dev_dbg(printdev(lp), "no slotted operation\n"); + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_SLOTTED, 0x0); + + /* enable irq */ + enable_irq(lp->spi->irq); + + /* Unmask SEQ interrupt */ + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL2, + DAR_PHY_CTRL2_SEQMSK, 0x0); + + /* Start the RX sequence */ + dev_dbg(printdev(lp), "start the RX sequence\n"); + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); + + return 0; +} + +static void +mcr20a_stop(struct ieee802154_hw *hw) +{ + struct mcr20a_local *lp = hw->priv; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* stop all running sequence */ + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); + + /* disable irq */ + disable_irq(lp->spi->irq); +} + +static int +mcr20a_set_hw_addr_filt(struct ieee802154_hw *hw, + struct ieee802154_hw_addr_filt *filt, + unsigned long changed) +{ + struct mcr20a_local *lp = hw->priv; + + dev_dbg(printdev(lp), "%s\n", __func__); + + if (changed & IEEE802154_AFILT_SADDR_CHANGED) { + u16 addr = le16_to_cpu(filt->short_addr); + + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_LSB, addr); + regmap_write(lp->regmap_iar, IAR_MACSHORTADDRS0_MSB, addr >> 8); + } + + if (changed & IEEE802154_AFILT_PANID_CHANGED) { + u16 pan = le16_to_cpu(filt->pan_id); + + regmap_write(lp->regmap_iar, IAR_MACPANID0_LSB, pan); + regmap_write(lp->regmap_iar, IAR_MACPANID0_MSB, pan >> 8); + } + + if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { + u8 addr[8], i; + + memcpy(addr, &filt->ieee_addr, 8); + for (i = 0; i < 8; i++) + regmap_write(lp->regmap_iar, + IAR_MACLONGADDRS0_0 + i, addr[i]); + } + + if (changed & IEEE802154_AFILT_PANC_CHANGED) { + if (filt->pan_coord) { + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, + DAR_PHY_CTRL4_PANCORDNTR0, 0x10); + } else { + regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, + DAR_PHY_CTRL4_PANCORDNTR0, 0x00); + } + } + + return 0; +} + +/* -30 dBm to 10 dBm */ +#define MCR20A_MAX_TX_POWERS 0x14 +static const s32 mcr20a_powers[MCR20A_MAX_TX_POWERS + 1] = { + -3000, -2800, -2600, -2400, -2200, -2000, -1800, -1600, -1400, + -1200, -1000, -800, -600, -400, -200, 0, 200, 400, 600, 800, 1000 +}; + +static int +mcr20a_set_txpower(struct ieee802154_hw *hw, s32 mbm) +{ + struct mcr20a_local *lp = hw->priv; + u32 i; + + dev_dbg(printdev(lp), "%s(%d)\n", __func__, mbm); + + for (i = 0; i < lp->hw->phy->supported.tx_powers_size; i++) { + if (lp->hw->phy->supported.tx_powers[i] == mbm) + return regmap_write(lp->regmap_dar, DAR_PA_PWR, + ((i + 8) & 0x1F)); + } + + return -EINVAL; +} + +#define MCR20A_MAX_ED_LEVELS MCR20A_MIN_CCA_THRESHOLD +static s32 mcr20a_ed_levels[MCR20A_MAX_ED_LEVELS + 1]; + +static int +mcr20a_set_cca_mode(struct ieee802154_hw *hw, + const struct wpan_phy_cca *cca) +{ + struct mcr20a_local *lp = hw->priv; + unsigned int cca_mode = 0xff; + bool cca_mode_and = false; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* mapping 802.15.4 to driver spec */ + switch (cca->mode) { + case NL802154_CCA_ENERGY: + cca_mode = MCR20A_CCA_MODE1; + break; + case NL802154_CCA_CARRIER: + cca_mode = MCR20A_CCA_MODE2; + break; + case NL802154_CCA_ENERGY_CARRIER: + switch (cca->opt) { + case NL802154_CCA_OPT_ENERGY_CARRIER_AND: + cca_mode = MCR20A_CCA_MODE3; + cca_mode_and = true; + break; + case NL802154_CCA_OPT_ENERGY_CARRIER_OR: + cca_mode = MCR20A_CCA_MODE3; + cca_mode_and = false; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, + DAR_PHY_CTRL4_CCATYPE_MASK, + cca_mode << DAR_PHY_CTRL4_CCATYPE_SHIFT); + if (ret < 0) + return ret; + + if (cca_mode == MCR20A_CCA_MODE3) { + if (cca_mode_and) { + ret = regmap_update_bits(lp->regmap_iar, IAR_CCA_CTRL, + IAR_CCA_CTRL_CCA3_AND_NOT_OR, + 0x08); + } else { + ret = regmap_update_bits(lp->regmap_iar, + IAR_CCA_CTRL, + IAR_CCA_CTRL_CCA3_AND_NOT_OR, + 0x00); + } + if (ret < 0) + return ret; + } + + return ret; +} + +static int +mcr20a_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) +{ + struct mcr20a_local *lp = hw->priv; + u32 i; + + dev_dbg(printdev(lp), "%s\n", __func__); + + for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) { + if (hw->phy->supported.cca_ed_levels[i] == mbm) + return regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, i); + } + + return 0; +} + +static int +mcr20a_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) +{ + struct mcr20a_local *lp = hw->priv; + int ret; + u8 rx_frame_filter_reg = 0x0; + u8 val; + + dev_dbg(printdev(lp), "%s(%d)\n", __func__, on); + + if (on) { + /* All frame types accepted*/ + val |= DAR_PHY_CTRL4_PROMISCUOUS; + rx_frame_filter_reg &= ~(IAR_RX_FRAME_FLT_FRM_VER); + rx_frame_filter_reg |= (IAR_RX_FRAME_FLT_ACK_FT | + IAR_RX_FRAME_FLT_NS_FT); + + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, + DAR_PHY_CTRL4_PROMISCUOUS, + DAR_PHY_CTRL4_PROMISCUOUS); + if (ret < 0) + return ret; + + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, + rx_frame_filter_reg); + if (ret < 0) + return ret; + } else { + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL4, + DAR_PHY_CTRL4_PROMISCUOUS, 0x0); + if (ret < 0) + return ret; + + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, + IAR_RX_FRAME_FLT_FRM_VER | + IAR_RX_FRAME_FLT_BEACON_FT | + IAR_RX_FRAME_FLT_DATA_FT | + IAR_RX_FRAME_FLT_CMD_FT); + if (ret < 0) + return ret; + } + + return 0; +} + +static const struct ieee802154_ops mcr20a_hw_ops = { + .owner = THIS_MODULE, + .xmit_async = mcr20a_xmit, + .ed = mcr20a_ed, + .set_channel = mcr20a_set_channel, + .start = mcr20a_start, + .stop = mcr20a_stop, + .set_hw_addr_filt = mcr20a_set_hw_addr_filt, + .set_txpower = mcr20a_set_txpower, + .set_cca_mode = mcr20a_set_cca_mode, + .set_cca_ed_level = mcr20a_set_cca_ed_level, + .set_promiscuous_mode = mcr20a_set_promiscuous_mode, +}; + +static int +mcr20a_request_rx(struct mcr20a_local *lp) +{ + dev_dbg(printdev(lp), "%s\n", __func__); + + /* Start the RX sequence */ + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_RX); + + return 0; +} + +static void +mcr20a_handle_rx_read_buf_complete(void *context) +{ + struct mcr20a_local *lp = context; + u8 len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; + struct sk_buff *skb; + + dev_dbg(printdev(lp), "%s\n", __func__); + + dev_dbg(printdev(lp), "RX is done\n"); + + if (!ieee802154_is_valid_psdu_len(len)) { + dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); + len = IEEE802154_MTU; + } + + len = len - 2; /* get rid of frame check field */ + + skb = dev_alloc_skb(len); + if (!skb) + return; + + memcpy(skb_put(skb, len), lp->rx_buf, len); + ieee802154_rx_irqsafe(lp->hw, skb, lp->rx_lqi[0]); + +#ifdef DEBUG + print_hex_dump(KERN_INFO, "mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1, + lp->rx_buf, len, 0); + pr_info("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]); +#endif + + /* start RX sequence */ + mcr20a_request_rx(lp); +} + +static void +mcr20a_handle_rx_read_len_complete(void *context) +{ + struct mcr20a_local *lp = context; + u8 len; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* get the length of received frame */ + len = lp->reg_data[0] & DAR_RX_FRAME_LENGTH_MASK; + dev_dbg(printdev(lp), "frame len : %d\n", len); + + /* prepare to read the rx buf */ + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; + lp->rx_header[0] = MCR20A_BURST_READ_PACKET_BUF; + lp->rx_xfer_buf.len = len; + + ret = spi_async(lp->spi, &lp->rx_buf_msg); + if (ret) + dev_err(printdev(lp), "failed to read rx buffer length\n"); +} + +static int +mcr20a_handle_rx(struct mcr20a_local *lp) +{ + dev_dbg(printdev(lp), "%s\n", __func__); + lp->reg_msg.complete = mcr20a_handle_rx_read_len_complete; + lp->reg_cmd[0] = MCR20A_READ_REG(DAR_RX_FRM_LEN); + lp->reg_xfer_data.len = 1; + + return spi_async(lp->spi, &lp->reg_msg); +} + +static int +mcr20a_handle_tx_complete(struct mcr20a_local *lp) +{ + dev_dbg(printdev(lp), "%s\n", __func__); + + ieee802154_xmit_complete(lp->hw, lp->tx_skb, false); + + return mcr20a_request_rx(lp); +} + +static int +mcr20a_handle_tx(struct mcr20a_local *lp) +{ + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* write tx buffer */ + lp->tx_header[0] = MCR20A_BURST_WRITE_PACKET_BUF; + /* add 2 bytes of FCS */ + lp->tx_len[0] = lp->tx_skb->len + 2; + lp->tx_xfer_buf.tx_buf = lp->tx_skb->data; + /* add 1 byte psduLength */ + lp->tx_xfer_buf.len = lp->tx_skb->len + 1; + + ret = spi_async(lp->spi, &lp->tx_buf_msg); + if (ret) { + dev_err(printdev(lp), "SPI write Failed for TX buf\n"); + return ret; + } + + return 0; +} + +static void +mcr20a_irq_clean_complete(void *context) +{ + struct mcr20a_local *lp = context; + u8 seq_state = lp->irq_data[DAR_IRQ_STS1] & DAR_PHY_CTRL1_XCVSEQ_MASK; + + dev_dbg(printdev(lp), "%s\n", __func__); + + enable_irq(lp->spi->irq); + + dev_dbg(printdev(lp), "IRQ STA1 (%02x) STA2 (%02x)\n", + lp->irq_data[DAR_IRQ_STS1], lp->irq_data[DAR_IRQ_STS2]); + + switch (seq_state) { + /* TX IRQ, RX IRQ and SEQ IRQ */ + case (0x03): + if (lp->is_tx) { + lp->is_tx = 0; + dev_dbg(printdev(lp), "TX is done. No ACK\n"); + mcr20a_handle_tx_complete(lp); + } + break; + case (0x05): + /* rx is starting */ + dev_dbg(printdev(lp), "RX is starting\n"); + mcr20a_handle_rx(lp); + break; + case (0x07): + if (lp->is_tx) { + /* tx is done */ + lp->is_tx = 0; + dev_dbg(printdev(lp), "TX is done. Get ACK\n"); + mcr20a_handle_tx_complete(lp); + } else { + /* rx is starting */ + dev_dbg(printdev(lp), "RX is starting\n"); + mcr20a_handle_rx(lp); + } + break; + case (0x01): + if (lp->is_tx) { + dev_dbg(printdev(lp), "TX is starting\n"); + mcr20a_handle_tx(lp); + } else { + dev_dbg(printdev(lp), "MCR20A is stop\n"); + } + break; + } +} + +static void mcr20a_irq_status_complete(void *context) +{ + int ret; + struct mcr20a_local *lp = context; + + dev_dbg(printdev(lp), "%s\n", __func__); + regmap_update_bits_async(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_XCVSEQ_MASK, MCR20A_XCVSEQ_IDLE); + + lp->reg_msg.complete = mcr20a_irq_clean_complete; + lp->reg_cmd[0] = MCR20A_WRITE_REG(DAR_IRQ_STS1); + memcpy(lp->reg_data, lp->irq_data, MCR20A_IRQSTS_NUM); + lp->reg_xfer_data.len = MCR20A_IRQSTS_NUM; + + ret = spi_async(lp->spi, &lp->reg_msg); + + if (ret) + dev_err(printdev(lp), "failed to clean irq status\n"); +} + +static irqreturn_t mcr20a_irq_isr(int irq, void *data) +{ + struct mcr20a_local *lp = data; + int ret; + + disable_irq_nosync(irq); + + lp->irq_header[0] = MCR20A_READ_REG(DAR_IRQ_STS1); + /* read IRQSTSx */ + ret = spi_async(lp->spi, &lp->irq_msg); + if (ret) { + enable_irq(irq); + return IRQ_NONE; + } + + return IRQ_HANDLED; +} + +static int mcr20a_get_platform_data(struct spi_device *spi, + struct mcr20a_platform_data *pdata) +{ + int ret = 0; + + if (!spi->dev.of_node) + return -EINVAL; + + pdata->rst_gpio = of_get_named_gpio(spi->dev.of_node, "rst_b-gpio", 0); + dev_dbg(&spi->dev, "rst_b-gpio: %d\n", pdata->rst_gpio); + + return ret; +} + +static void mcr20a_hw_setup(struct mcr20a_local *lp) +{ + u8 i; + struct ieee802154_hw *hw = lp->hw; + struct wpan_phy *phy = lp->hw->phy; + + dev_dbg(printdev(lp), "%s\n", __func__); + + phy->symbol_duration = 16; + phy->lifs_period = 40; + phy->sifs_period = 12; + + hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | + IEEE802154_HW_AFILT | + IEEE802154_HW_PROMISCUOUS; + + phy->flags = WPAN_PHY_FLAG_TXPOWER | + WPAN_PHY_FLAG_CCA_ED_LEVEL | + WPAN_PHY_FLAG_CCA_MODE; + + phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | + BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER); + phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) | + BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR); + + /* initiating cca_ed_levels */ + for (i = MCR20A_MAX_CCA_THRESHOLD; i < MCR20A_MIN_CCA_THRESHOLD + 1; + ++i) { + mcr20a_ed_levels[i] = -i * 100; + } + + phy->supported.cca_ed_levels = mcr20a_ed_levels; + phy->supported.cca_ed_levels_size = ARRAY_SIZE(mcr20a_ed_levels); + + phy->cca.mode = NL802154_CCA_ENERGY; + + phy->supported.channels[0] = MCR20A_VALID_CHANNELS; + phy->current_page = 0; + /* MCR20A default reset value */ + phy->current_channel = 20; + phy->symbol_duration = 16; + phy->supported.tx_powers = mcr20a_powers; + phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers); + phy->cca_ed_level = phy->supported.cca_ed_levels[75]; + phy->transmit_power = phy->supported.tx_powers[0x0F]; +} + +static void +mcr20a_setup_tx_spi_messages(struct mcr20a_local *lp) +{ + spi_message_init(&lp->tx_buf_msg); + lp->tx_buf_msg.context = lp; + lp->tx_buf_msg.complete = mcr20a_write_tx_buf_complete; + + lp->tx_xfer_header.len = 1; + lp->tx_xfer_header.tx_buf = lp->tx_header; + + lp->tx_xfer_len.len = 1; + lp->tx_xfer_len.tx_buf = lp->tx_len; + + spi_message_add_tail(&lp->tx_xfer_header, &lp->tx_buf_msg); + spi_message_add_tail(&lp->tx_xfer_len, &lp->tx_buf_msg); + spi_message_add_tail(&lp->tx_xfer_buf, &lp->tx_buf_msg); +} + +static void +mcr20a_setup_rx_spi_messages(struct mcr20a_local *lp) +{ + spi_message_init(&lp->reg_msg); + lp->reg_msg.context = lp; + + lp->reg_xfer_cmd.len = 1; + lp->reg_xfer_cmd.tx_buf = lp->reg_cmd; + lp->reg_xfer_cmd.rx_buf = lp->reg_cmd; + + lp->reg_xfer_data.rx_buf = lp->reg_data; + lp->reg_xfer_data.tx_buf = lp->reg_data; + + spi_message_add_tail(&lp->reg_xfer_cmd, &lp->reg_msg); + spi_message_add_tail(&lp->reg_xfer_data, &lp->reg_msg); + + spi_message_init(&lp->rx_buf_msg); + lp->rx_buf_msg.context = lp; + lp->rx_buf_msg.complete = mcr20a_handle_rx_read_buf_complete; + lp->rx_xfer_header.len = 1; + lp->rx_xfer_header.tx_buf = lp->rx_header; + lp->rx_xfer_header.rx_buf = lp->rx_header; + + lp->rx_xfer_buf.rx_buf = lp->rx_buf; + + lp->rx_xfer_lqi.len = 1; + lp->rx_xfer_lqi.rx_buf = lp->rx_lqi; + + spi_message_add_tail(&lp->rx_xfer_header, &lp->rx_buf_msg); + spi_message_add_tail(&lp->rx_xfer_buf, &lp->rx_buf_msg); + spi_message_add_tail(&lp->rx_xfer_lqi, &lp->rx_buf_msg); +} + +static void +mcr20a_setup_irq_spi_messages(struct mcr20a_local *lp) +{ + spi_message_init(&lp->irq_msg); + lp->irq_msg.context = lp; + lp->irq_msg.complete = mcr20a_irq_status_complete; + lp->irq_xfer_header.len = 1; + lp->irq_xfer_header.tx_buf = lp->irq_header; + lp->irq_xfer_header.rx_buf = lp->irq_header; + + lp->irq_xfer_data.len = MCR20A_IRQSTS_NUM; + lp->irq_xfer_data.rx_buf = lp->irq_data; + + spi_message_add_tail(&lp->irq_xfer_header, &lp->irq_msg); + spi_message_add_tail(&lp->irq_xfer_data, &lp->irq_msg); +} + +static int +mcr20a_phy_init(struct mcr20a_local *lp) +{ + u8 index; + unsigned int phy_reg = 0; + int ret; + + dev_dbg(printdev(lp), "%s\n", __func__); + + /* Disable Tristate on COCO MISO for SPI reads */ + ret = regmap_write(lp->regmap_iar, IAR_MISC_PAD_CTRL, 0x02); + if (ret) + goto err_ret; + + /* Clear all PP IRQ bits in IRQSTS1 to avoid unexpected interrupts + * immediately after init + */ + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS1, 0xEF); + if (ret) + goto err_ret; + + /* Clear all PP IRQ bits in IRQSTS2 */ + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS2, + DAR_IRQSTS2_ASM_IRQ | DAR_IRQSTS2_PB_ERR_IRQ | + DAR_IRQSTS2_WAKE_IRQ); + if (ret) + goto err_ret; + + /* Disable all timer interrupts */ + ret = regmap_write(lp->regmap_dar, DAR_IRQ_STS3, 0xFF); + if (ret) + goto err_ret; + + /* PHY_CTRL1 : default HW settings + AUTOACK enabled */ + ret = regmap_update_bits(lp->regmap_dar, DAR_PHY_CTRL1, + DAR_PHY_CTRL1_AUTOACK, DAR_PHY_CTRL1_AUTOACK); + + /* PHY_CTRL2 : disable all interrupts */ + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL2, 0xFF); + if (ret) + goto err_ret; + + /* PHY_CTRL3 : disable all timers and remaining interrupts */ + ret = regmap_write(lp->regmap_dar, DAR_PHY_CTRL3, + DAR_PHY_CTRL3_ASM_MSK | DAR_PHY_CTRL3_PB_ERR_MSK | + DAR_PHY_CTRL3_WAKE_MSK); + if (ret) + goto err_ret; + + /* SRC_CTRL : enable Acknowledge Frame Pending and + * Source Address Matching Enable + */ + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, + DAR_SRC_CTRL_ACK_FRM_PND | + (DAR_SRC_CTRL_INDEX << DAR_SRC_CTRL_INDEX_SHIFT)); + if (ret) + goto err_ret; + + /* RX_FRAME_FILTER */ + /* FRM_VER[1:0] = b11. Accept FrameVersion 0 and 1 packets */ + ret = regmap_write(lp->regmap_iar, IAR_RX_FRAME_FILTER, + IAR_RX_FRAME_FLT_FRM_VER | + IAR_RX_FRAME_FLT_BEACON_FT | + IAR_RX_FRAME_FLT_DATA_FT | + IAR_RX_FRAME_FLT_CMD_FT); + if (ret) + goto err_ret; + + dev_info(printdev(lp), "overwrites version: 0x%02x\n", + MCR20A_OVERWRITE_VERSION); + + /* Overwrites direct registers */ + ret = regmap_write(lp->regmap_dar, DAR_OVERWRITE_VER, + MCR20A_OVERWRITE_VERSION); + if (ret) + goto err_ret; + + /* Overwrites indirect registers */ + ret = regmap_multi_reg_write(lp->regmap_iar, mar20a_iar_overwrites, + ARRAY_SIZE(mar20a_iar_overwrites)); + if (ret) + goto err_ret; + + /* Clear HW indirect queue */ + dev_dbg(printdev(lp), "clear HW indirect queue\n"); + for (index = 0; index < MCR20A_PHY_INDIRECT_QUEUE_SIZE; index++) { + phy_reg = (u8)(((index & DAR_SRC_CTRL_INDEX) << + DAR_SRC_CTRL_INDEX_SHIFT) + | (DAR_SRC_CTRL_SRCADDR_EN) + | (DAR_SRC_CTRL_INDEX_DISABLE)); + ret = regmap_write(lp->regmap_dar, DAR_SRC_CTRL, phy_reg); + if (ret) + goto err_ret; + phy_reg = 0; + } + + /* Assign HW Indirect hash table to PAN0 */ + ret = regmap_read(lp->regmap_iar, IAR_DUAL_PAN_CTRL, &phy_reg); + if (ret) + goto err_ret; + + /* Clear current lvl */ + phy_reg &= ~IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK; + + /* Set new lvl */ + phy_reg |= MCR20A_PHY_INDIRECT_QUEUE_SIZE << + IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT; + ret = regmap_write(lp->regmap_iar, IAR_DUAL_PAN_CTRL, phy_reg); + if (ret) + goto err_ret; + + /* set CCA threshold to -75 dBm */ + ret = regmap_write(lp->regmap_iar, IAR_CCA1_THRESH, 0x4B); + if (ret) + goto err_ret; + + /* set prescaller to obtain 1 symbol (16us) timebase */ + ret = regmap_write(lp->regmap_iar, IAR_TMR_PRESCALE, 0x05); + if (ret) + goto err_ret; + + /* enable autodoze mode. */ + dev_dbg(printdev(lp), "enable autodoze mode\n"); + ret = regmap_update_bits(lp->regmap_dar, DAR_PWR_MODES, + DAR_PWR_MODES_AUTODOZE, + DAR_PWR_MODES_AUTODOZE); + if (ret) + goto err_ret; + + /* disable clk_out */ + dev_dbg(printdev(lp), "disable clk_out\n"); + ret = regmap_update_bits(lp->regmap_dar, DAR_CLK_OUT_CTRL, + DAR_CLK_OUT_CTRL_EN, 0x0); + if (ret) + goto err_ret; + + return 0; + +err_ret: + return ret; +} + +static int +mcr20a_probe(struct spi_device *spi) +{ + struct ieee802154_hw *hw; + struct mcr20a_local *lp; + struct mcr20a_platform_data *pdata; + int irq_type; + int ret = -ENOMEM; + + dev_dbg(&spi->dev, "%s\n", __func__); + + if (!spi->irq) { + dev_err(&spi->dev, "no IRQ specified\n"); + return -EINVAL; + } + + pdata = kmalloc(sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + /* set mcr20a platform data */ + ret = mcr20a_get_platform_data(spi, pdata); + if (ret < 0) { + dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n"); + return ret; + } + + /* init reset gpio */ + if (gpio_is_valid(pdata->rst_gpio)) { + ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio, + GPIOF_OUT_INIT_HIGH, "reset"); + if (ret) + return ret; + } + + /* reset mcr20a */ + if (gpio_is_valid(pdata->rst_gpio)) { + usleep_range(10, 20); + gpio_set_value_cansleep(pdata->rst_gpio, 0); + usleep_range(10, 20); + gpio_set_value_cansleep(pdata->rst_gpio, 1); + usleep_range(120, 240); + } + + /* allocate ieee802154_hw and private data */ + hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops); + if (!hw) { + dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n"); + return -ENOMEM; + } + + /* init mcr20a local data */ + lp = hw->priv; + lp->hw = hw; + lp->spi = spi; + lp->spi->dev.platform_data = pdata; + lp->pdata = pdata; + + /* init ieee802154_hw */ + hw->parent = &spi->dev; + ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); + + /* init buf */ + lp->buf = devm_kzalloc(&spi->dev, SPI_COMMAND_BUFFER, GFP_KERNEL); + + if (!lp->buf) + return -ENOMEM; + + mcr20a_setup_tx_spi_messages(lp); + mcr20a_setup_rx_spi_messages(lp); + mcr20a_setup_irq_spi_messages(lp); + + /* setup regmap */ + lp->regmap_dar = devm_regmap_init_spi(spi, &mcr20a_dar_regmap); + if (IS_ERR(lp->regmap_dar)) { + ret = PTR_ERR(lp->regmap_dar); + dev_err(&spi->dev, "Failed to allocate dar map: %d\n", + ret); + goto free_dev; + } + + lp->regmap_iar = devm_regmap_init_spi(spi, &mcr20a_iar_regmap); + if (IS_ERR(lp->regmap_iar)) { + ret = PTR_ERR(lp->regmap_iar); + dev_err(&spi->dev, "Failed to allocate iar map: %d\n", ret); + goto free_dev; + } + + mcr20a_hw_setup(lp); + + spi_set_drvdata(spi, lp); + + ret = mcr20a_phy_init(lp); + if (ret < 0) { + dev_crit(&spi->dev, "mcr20a_phy_init failed\n"); + goto free_dev; + } + + irq_type = irq_get_trigger_type(spi->irq); + if (!irq_type) + irq_type = IRQF_TRIGGER_FALLING; + + ret = devm_request_irq(&spi->dev, spi->irq, mcr20a_irq_isr, + irq_type, dev_name(&spi->dev), lp); + if (ret) { + dev_err(&spi->dev, "could not request_irq for mcr20a\n"); + ret = -ENODEV; + goto free_dev; + } + + /* disable_irq by default and wait for starting hardware */ + disable_irq(spi->irq); + + ret = ieee802154_register_hw(hw); + if (ret) { + dev_crit(&spi->dev, "ieee802154_register_hw failed\n"); + goto free_dev; + } + + return ret; + +free_dev: + ieee802154_free_hw(lp->hw); + + return ret; +} + +static int mcr20a_remove(struct spi_device *spi) +{ + struct mcr20a_local *lp = spi_get_drvdata(spi); + + dev_dbg(&spi->dev, "%s\n", __func__); + + ieee802154_unregister_hw(lp->hw); + ieee802154_free_hw(lp->hw); + + return 0; +} + +static const struct of_device_id mcr20a_of_match[] = { + { .compatible = "nxp,mcr20a", }, + { }, +}; +MODULE_DEVICE_TABLE(of, mcr20a_of_match); + +static const struct spi_device_id mcr20a_device_id[] = { + { .name = "mcr20a", }, + { }, +}; +MODULE_DEVICE_TABLE(spi, mcr20a_device_id); + +static struct spi_driver mcr20a_driver = { + .id_table = mcr20a_device_id, + .driver = { + .of_match_table = of_match_ptr(mcr20a_of_match), + .name = "mcr20a", + }, + .probe = mcr20a_probe, + .remove = mcr20a_remove, +}; + +module_spi_driver(mcr20a_driver); + +MODULE_DESCRIPTION("MCR20A Transceiver Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Xue Liu <liuxuenetmail@gmail>"); diff --git a/drivers/net/ieee802154/mcr20a.h b/drivers/net/ieee802154/mcr20a.h new file mode 100644 index 0000000..6da4fd0 --- /dev/null +++ b/drivers/net/ieee802154/mcr20a.h @@ -0,0 +1,498 @@ +/* + * Driver for NXP MCR20A 802.15.4 Wireless-PAN Networking controller + * + * Copyright (C) 2018 Xue Liu <liuxuenetmail@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#ifndef _MCR20A_H +#define _MCR20A_H + +/* Direct Accress Register */ +#define DAR_IRQ_STS1 0x00 +#define DAR_IRQ_STS2 0x01 +#define DAR_IRQ_STS3 0x02 +#define DAR_PHY_CTRL1 0x03 +#define DAR_PHY_CTRL2 0x04 +#define DAR_PHY_CTRL3 0x05 +#define DAR_RX_FRM_LEN 0x06 +#define DAR_PHY_CTRL4 0x07 +#define DAR_SRC_CTRL 0x08 +#define DAR_SRC_ADDRS_SUM_LSB 0x09 +#define DAR_SRC_ADDRS_SUM_MSB 0x0A +#define DAR_CCA1_ED_FNL 0x0B +#define DAR_EVENT_TMR_LSB 0x0C +#define DAR_EVENT_TMR_MSB 0x0D +#define DAR_EVENT_TMR_USB 0x0E +#define DAR_TIMESTAMP_LSB 0x0F +#define DAR_TIMESTAMP_MSB 0x10 +#define DAR_TIMESTAMP_USB 0x11 +#define DAR_T3CMP_LSB 0x12 +#define DAR_T3CMP_MSB 0x13 +#define DAR_T3CMP_USB 0x14 +#define DAR_T2PRIMECMP_LSB 0x15 +#define DAR_T2PRIMECMP_MSB 0x16 +#define DAR_T1CMP_LSB 0x17 +#define DAR_T1CMP_MSB 0x18 +#define DAR_T1CMP_USB 0x19 +#define DAR_T2CMP_LSB 0x1A +#define DAR_T2CMP_MSB 0x1B +#define DAR_T2CMP_USB 0x1C +#define DAR_T4CMP_LSB 0x1D +#define DAR_T4CMP_MSB 0x1E +#define DAR_T4CMP_USB 0x1F +#define DAR_PLL_INT0 0x20 +#define DAR_PLL_FRAC0_LSB 0x21 +#define DAR_PLL_FRAC0_MSB 0x22 +#define DAR_PA_PWR 0x23 +#define DAR_SEQ_STATE 0x24 +#define DAR_LQI_VALUE 0x25 +#define DAR_RSSI_CCA_CONT 0x26 +/*------------------ 0x27 */ +#define DAR_ASM_CTRL1 0x28 +#define DAR_ASM_CTRL2 0x29 +#define DAR_ASM_DATA_0 0x2A +#define DAR_ASM_DATA_1 0x2B +#define DAR_ASM_DATA_2 0x2C +#define DAR_ASM_DATA_3 0x2D +#define DAR_ASM_DATA_4 0x2E +#define DAR_ASM_DATA_5 0x2F +#define DAR_ASM_DATA_6 0x30 +#define DAR_ASM_DATA_7 0x31 +#define DAR_ASM_DATA_8 0x32 +#define DAR_ASM_DATA_9 0x33 +#define DAR_ASM_DATA_A 0x34 +#define DAR_ASM_DATA_B 0x35 +#define DAR_ASM_DATA_C 0x36 +#define DAR_ASM_DATA_D 0x37 +#define DAR_ASM_DATA_E 0x38 +#define DAR_ASM_DATA_F 0x39 +/*----------------------- 0x3A */ +#define DAR_OVERWRITE_VER 0x3B +#define DAR_CLK_OUT_CTRL 0x3C +#define DAR_PWR_MODES 0x3D +#define IAR_INDEX 0x3E +#define IAR_DATA 0x3F + +/* Indirect Resgister Memory */ +#define IAR_PART_ID 0x00 +#define IAR_XTAL_TRIM 0x01 +#define IAR_PMC_LP_TRIM 0x02 +#define IAR_MACPANID0_LSB 0x03 +#define IAR_MACPANID0_MSB 0x04 +#define IAR_MACSHORTADDRS0_LSB 0x05 +#define IAR_MACSHORTADDRS0_MSB 0x06 +#define IAR_MACLONGADDRS0_0 0x07 +#define IAR_MACLONGADDRS0_8 0x08 +#define IAR_MACLONGADDRS0_16 0x09 +#define IAR_MACLONGADDRS0_24 0x0A +#define IAR_MACLONGADDRS0_32 0x0B +#define IAR_MACLONGADDRS0_40 0x0C +#define IAR_MACLONGADDRS0_48 0x0D +#define IAR_MACLONGADDRS0_56 0x0E +#define IAR_RX_FRAME_FILTER 0x0F +#define IAR_PLL_INT1 0x10 +#define IAR_PLL_FRAC1_LSB 0x11 +#define IAR_PLL_FRAC1_MSB 0x12 +#define IAR_MACPANID1_LSB 0x13 +#define IAR_MACPANID1_MSB 0x14 +#define IAR_MACSHORTADDRS1_LSB 0x15 +#define IAR_MACSHORTADDRS1_MSB 0x16 +#define IAR_MACLONGADDRS1_0 0x17 +#define IAR_MACLONGADDRS1_8 0x18 +#define IAR_MACLONGADDRS1_16 0x19 +#define IAR_MACLONGADDRS1_24 0x1A +#define IAR_MACLONGADDRS1_32 0x1B +#define IAR_MACLONGADDRS1_40 0x1C +#define IAR_MACLONGADDRS1_48 0x1D +#define IAR_MACLONGADDRS1_56 0x1E +#define IAR_DUAL_PAN_CTRL 0x1F +#define IAR_DUAL_PAN_DWELL 0x20 +#define IAR_DUAL_PAN_STS 0x21 +#define IAR_CCA1_THRESH 0x22 +#define IAR_CCA1_ED_OFFSET_COMP 0x23 +#define IAR_LQI_OFFSET_COMP 0x24 +#define IAR_CCA_CTRL 0x25 +#define IAR_CCA2_CORR_PEAKS 0x26 +#define IAR_CCA2_CORR_THRESH 0x27 +#define IAR_TMR_PRESCALE 0x28 +/*-------------------- 0x29 */ +#define IAR_GPIO_DATA 0x2A +#define IAR_GPIO_DIR 0x2B +#define IAR_GPIO_PUL_EN 0x2C +#define IAR_GPIO_PUL_SEL 0x2D +#define IAR_GPIO_DS 0x2E +/*------------------ 0x2F */ +#define IAR_ANT_PAD_CTRL 0x30 +#define IAR_MISC_PAD_CTRL 0x31 +#define IAR_BSM_CTRL 0x32 +/*------------------- 0x33 */ +#define IAR_RNG 0x34 +#define IAR_RX_BYTE_COUNT 0x35 +#define IAR_RX_WTR_MARK 0x36 +#define IAR_SOFT_RESET 0x37 +#define IAR_TXDELAY 0x38 +#define IAR_ACKDELAY 0x39 +#define IAR_SEQ_MGR_CTRL 0x3A +#define IAR_SEQ_MGR_STS 0x3B +#define IAR_SEQ_T_STS 0x3C +#define IAR_ABORT_STS 0x3D +#define IAR_CCCA_BUSY_CNT 0x3E +#define IAR_SRC_ADDR_CHECKSUM1 0x3F +#define IAR_SRC_ADDR_CHECKSUM2 0x40 +#define IAR_SRC_TBL_VALID1 0x41 +#define IAR_SRC_TBL_VALID2 0x42 +#define IAR_FILTERFAIL_CODE1 0x43 +#define IAR_FILTERFAIL_CODE2 0x44 +#define IAR_SLOT_PRELOAD 0x45 +/*-------------------- 0x46 */ +#define IAR_CORR_VT 0x47 +#define IAR_SYNC_CTRL 0x48 +#define IAR_PN_LSB_0 0x49 +#define IAR_PN_LSB_1 0x4A +#define IAR_PN_MSB_0 0x4B +#define IAR_PN_MSB_1 0x4C +#define IAR_CORR_NVAL 0x4D +#define IAR_TX_MODE_CTRL 0x4E +#define IAR_SNF_THR 0x4F +#define IAR_FAD_THR 0x50 +#define IAR_ANT_AGC_CTRL 0x51 +#define IAR_AGC_THR1 0x52 +#define IAR_AGC_THR2 0x53 +#define IAR_AGC_HYS 0x54 +#define IAR_AFC 0x55 +/*------------------- 0x56 */ +/*------------------- 0x57 */ +#define IAR_PHY_STS 0x58 +#define IAR_RX_MAX_CORR 0x59 +#define IAR_RX_MAX_PREAMBLE 0x5A +#define IAR_RSSI 0x5B +/*------------------- 0x5C */ +/*------------------- 0x5D */ +#define IAR_PLL_DIG_CTRL 0x5E +#define IAR_VCO_CAL 0x5F +#define IAR_VCO_BEST_DIFF 0x60 +#define IAR_VCO_BIAS 0x61 +#define IAR_KMOD_CTRL 0x62 +#define IAR_KMOD_CAL 0x63 +#define IAR_PA_CAL 0x64 +#define IAR_PA_PWRCAL 0x65 +#define IAR_ATT_RSSI1 0x66 +#define IAR_ATT_RSSI2 0x67 +#define IAR_RSSI_OFFSET 0x68 +#define IAR_RSSI_SLOPE 0x69 +#define IAR_RSSI_CAL1 0x6A +#define IAR_RSSI_CAL2 0x6B +/*------------------- 0x6C */ +/*------------------- 0x6D */ +#define IAR_XTAL_CTRL 0x6E +#define IAR_XTAL_COMP_MIN 0x6F +#define IAR_XTAL_COMP_MAX 0x70 +#define IAR_XTAL_GM 0x71 +/*------------------- 0x72 */ +/*------------------- 0x73 */ +#define IAR_LNA_TUNE 0x74 +#define IAR_LNA_AGCGAIN 0x75 +/*------------------- 0x76 */ +/*------------------- 0x77 */ +#define IAR_CHF_PMA_GAIN 0x78 +#define IAR_CHF_IBUF 0x79 +#define IAR_CHF_QBUF 0x7A +#define IAR_CHF_IRIN 0x7B +#define IAR_CHF_QRIN 0x7C +#define IAR_CHF_IL 0x7D +#define IAR_CHF_QL 0x7E +#define IAR_CHF_CC1 0x7F +#define IAR_CHF_CCL 0x80 +#define IAR_CHF_CC2 0x81 +#define IAR_CHF_IROUT 0x82 +#define IAR_CHF_QROUT 0x83 +/*------------------- 0x84 */ +/*------------------- 0x85 */ +#define IAR_RSSI_CTRL 0x86 +/*------------------- 0x87 */ +/*------------------- 0x88 */ +#define IAR_PA_BIAS 0x89 +#define IAR_PA_TUNING 0x8A +/*------------------- 0x8B */ +/*------------------- 0x8C */ +#define IAR_PMC_HP_TRIM 0x8D +#define IAR_VREGA_TRIM 0x8E +/*------------------- 0x8F */ +/*------------------- 0x90 */ +#define IAR_VCO_CTRL1 0x91 +#define IAR_VCO_CTRL2 0x92 +/*------------------- 0x93 */ +/*------------------- 0x94 */ +#define IAR_ANA_SPARE_OUT1 0x95 +#define IAR_ANA_SPARE_OUT2 0x96 +#define IAR_ANA_SPARE_IN 0x97 +#define IAR_MISCELLANEOUS 0x98 +/*------------------- 0x99 */ +#define IAR_SEQ_MGR_OVRD0 0x9A +#define IAR_SEQ_MGR_OVRD1 0x9B +#define IAR_SEQ_MGR_OVRD2 0x9C +#define IAR_SEQ_MGR_OVRD3 0x9D +#define IAR_SEQ_MGR_OVRD4 0x9E +#define IAR_SEQ_MGR_OVRD5 0x9F +#define IAR_SEQ_MGR_OVRD6 0xA0 +#define IAR_SEQ_MGR_OVRD7 0xA1 +/*------------------- 0xA2 */ +#define IAR_TESTMODE_CTRL 0xA3 +#define IAR_DTM_CTRL1 0xA4 +#define IAR_DTM_CTRL2 0xA5 +#define IAR_ATM_CTRL1 0xA6 +#define IAR_ATM_CTRL2 0xA7 +#define IAR_ATM_CTRL3 0xA8 +/*------------------- 0xA9 */ +#define IAR_LIM_FE_TEST_CTRL 0xAA +#define IAR_CHF_TEST_CTRL 0xAB +#define IAR_VCO_TEST_CTRL 0xAC +#define IAR_PLL_TEST_CTRL 0xAD +#define IAR_PA_TEST_CTRL 0xAE +#define IAR_PMC_TEST_CTRL 0xAF +#define IAR_SCAN_DTM_PROTECT_1 0xFE +#define IAR_SCAN_DTM_PROTECT_0 0xFF + +/* IRQSTS1 bits */ +#define DAR_IRQSTS1_RX_FRM_PEND BIT(7) +#define DAR_IRQSTS1_PLL_UNLOCK_IRQ BIT(6) +#define DAR_IRQSTS1_FILTERFAIL_IRQ BIT(5) +#define DAR_IRQSTS1_RXWTRMRKIRQ BIT(4) +#define DAR_IRQSTS1_CCAIRQ BIT(3) +#define DAR_IRQSTS1_RXIRQ BIT(2) +#define DAR_IRQSTS1_TXIRQ BIT(1) +#define DAR_IRQSTS1_SEQIRQ BIT(0) + +/* IRQSTS2 bits */ +#define DAR_IRQSTS2_CRCVALID BIT(7) +#define DAR_IRQSTS2_CCA BIT(6) +#define DAR_IRQSTS2_SRCADDR BIT(5) +#define DAR_IRQSTS2_PI BIT(4) +#define DAR_IRQSTS2_TMRSTATUS BIT(3) +#define DAR_IRQSTS2_ASM_IRQ BIT(2) +#define DAR_IRQSTS2_PB_ERR_IRQ BIT(1) +#define DAR_IRQSTS2_WAKE_IRQ BIT(0) + +/* IRQSTS3 bits */ +#define DAR_IRQSTS3_TMR4MSK BIT(7) +#define DAR_IRQSTS3_TMR3MSK BIT(6) +#define DAR_IRQSTS3_TMR2MSK BIT(5) +#define DAR_IRQSTS3_TMR1MSK BIT(4) +#define DAR_IRQSTS3_TMR4IRQ BIT(3) +#define DAR_IRQSTS3_TMR3IRQ BIT(2) +#define DAR_IRQSTS3_TMR2IRQ BIT(1) +#define DAR_IRQSTS3_TMR1IRQ BIT(0) + +/* PHY_CTRL1 bits */ +#define DAR_PHY_CTRL1_TMRTRIGEN BIT(7) +#define DAR_PHY_CTRL1_SLOTTED BIT(6) +#define DAR_PHY_CTRL1_CCABFRTX BIT(5) +#define DAR_PHY_CTRL1_CCABFRTX_SHIFT 5 +#define DAR_PHY_CTRL1_RXACKRQD BIT(4) +#define DAR_PHY_CTRL1_AUTOACK BIT(3) +#define DAR_PHY_CTRL1_XCVSEQ_MASK 0x07 + +/* PHY_CTRL2 bits */ +#define DAR_PHY_CTRL2_CRC_MSK BIT(7) +#define DAR_PHY_CTRL2_PLL_UNLOCK_MSK BIT(6) +#define DAR_PHY_CTRL2_FILTERFAIL_MSK BIT(5) +#define DAR_PHY_CTRL2_RX_WMRK_MSK BIT(4) +#define DAR_PHY_CTRL2_CCAMSK BIT(3) +#define DAR_PHY_CTRL2_RXMSK BIT(2) +#define DAR_PHY_CTRL2_TXMSK BIT(1) +#define DAR_PHY_CTRL2_SEQMSK BIT(0) + +/* PHY_CTRL3 bits */ +#define DAR_PHY_CTRL3_TMR4CMP_EN BIT(7) +#define DAR_PHY_CTRL3_TMR3CMP_EN BIT(6) +#define DAR_PHY_CTRL3_TMR2CMP_EN BIT(5) +#define DAR_PHY_CTRL3_TMR1CMP_EN BIT(4) +#define DAR_PHY_CTRL3_ASM_MSK BIT(2) +#define DAR_PHY_CTRL3_PB_ERR_MSK BIT(1) +#define DAR_PHY_CTRL3_WAKE_MSK BIT(0) + +/* RX_FRM_LEN bits */ +#define DAR_RX_FRAME_LENGTH_MASK (0x7F) + +/* PHY_CTRL4 bits */ +#define DAR_PHY_CTRL4_TRCV_MSK BIT(7) +#define DAR_PHY_CTRL4_TC3TMOUT BIT(6) +#define DAR_PHY_CTRL4_PANCORDNTR0 BIT(5) +#define DAR_PHY_CTRL4_CCATYPE (3) +#define DAR_PHY_CTRL4_CCATYPE_SHIFT (3) +#define DAR_PHY_CTRL4_CCATYPE_MASK (0x18) +#define DAR_PHY_CTRL4_TMRLOAD BIT(2) +#define DAR_PHY_CTRL4_PROMISCUOUS BIT(1) +#define DAR_PHY_CTRL4_TC2PRIME_EN BIT(0) + +/* SRC_CTRL bits */ +#define DAR_SRC_CTRL_INDEX (0x0F) +#define DAR_SRC_CTRL_INDEX_SHIFT (4) +#define DAR_SRC_CTRL_ACK_FRM_PND BIT(3) +#define DAR_SRC_CTRL_SRCADDR_EN BIT(2) +#define DAR_SRC_CTRL_INDEX_EN BIT(1) +#define DAR_SRC_CTRL_INDEX_DISABLE BIT(0) + +/* DAR_ASM_CTRL1 bits */ +#define DAR_ASM_CTRL1_CLEAR BIT(7) +#define DAR_ASM_CTRL1_START BIT(6) +#define DAR_ASM_CTRL1_SELFTST BIT(5) +#define DAR_ASM_CTRL1_CTR BIT(4) +#define DAR_ASM_CTRL1_CBC BIT(3) +#define DAR_ASM_CTRL1_AES BIT(2) +#define DAR_ASM_CTRL1_LOAD_MAC BIT(1) + +/* DAR_ASM_CTRL2 bits */ +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL (7) +#define DAR_ASM_CTRL2_DATA_REG_TYPE_SEL_SHIFT (5) +#define DAR_ASM_CTRL2_TSTPAS BIT(1) + +/* DAR_CLK_OUT_CTRL bits */ +#define DAR_CLK_OUT_CTRL_EXTEND BIT(7) +#define DAR_CLK_OUT_CTRL_HIZ BIT(6) +#define DAR_CLK_OUT_CTRL_SR BIT(5) +#define DAR_CLK_OUT_CTRL_DS BIT(4) +#define DAR_CLK_OUT_CTRL_EN BIT(3) +#define DAR_CLK_OUT_CTRL_DIV (7) + +/* DAR_PWR_MODES bits */ +#define DAR_PWR_MODES_XTAL_READY BIT(5) +#define DAR_PWR_MODES_XTALEN BIT(4) +#define DAR_PWR_MODES_ASM_CLK_EN BIT(3) +#define DAR_PWR_MODES_AUTODOZE BIT(1) +#define DAR_PWR_MODES_PMC_MODE BIT(0) + +/* RX_FRAME_FILTER bits */ +#define IAR_RX_FRAME_FLT_FRM_VER (0xC0) +#define IAR_RX_FRAME_FLT_FRM_VER_SHIFT (6) +#define IAR_RX_FRAME_FLT_ACTIVE_PROMISCUOUS BIT(5) +#define IAR_RX_FRAME_FLT_NS_FT BIT(4) +#define IAR_RX_FRAME_FLT_CMD_FT BIT(3) +#define IAR_RX_FRAME_FLT_ACK_FT BIT(2) +#define IAR_RX_FRAME_FLT_DATA_FT BIT(1) +#define IAR_RX_FRAME_FLT_BEACON_FT BIT(0) + +/* DUAL_PAN_CTRL bits */ +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_MSK (0xF0) +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_SAM_LVL_SHIFT (4) +#define IAR_DUAL_PAN_CTRL_CURRENT_NETWORK BIT(3) +#define IAR_DUAL_PAN_CTRL_PANCORDNTR1 BIT(2) +#define IAR_DUAL_PAN_CTRL_DUAL_PAN_AUTO BIT(1) +#define IAR_DUAL_PAN_CTRL_ACTIVE_NETWORK BIT(0) + +/* DUAL_PAN_STS bits */ +#define IAR_DUAL_PAN_STS_RECD_ON_PAN1 BIT(7) +#define IAR_DUAL_PAN_STS_RECD_ON_PAN0 BIT(6) +#define IAR_DUAL_PAN_STS_DUAL_PAN_REMAIN (0x3F) + +/* CCA_CTRL bits */ +#define IAR_CCA_CTRL_AGC_FRZ_EN BIT(6) +#define IAR_CCA_CTRL_CONT_RSSI_EN BIT(5) +#define IAR_CCA_CTRL_LQI_RSSI_NOT_CORR BIT(4) +#define IAR_CCA_CTRL_CCA3_AND_NOT_OR BIT(3) +#define IAR_CCA_CTRL_POWER_COMP_EN_LQI BIT(2) +#define IAR_CCA_CTRL_POWER_COMP_EN_ED BIT(1) +#define IAR_CCA_CTRL_POWER_COMP_EN_CCA1 BIT(0) + +/* ANT_PAD_CTRL bits */ +#define IAR_ANT_PAD_CTRL_ANTX_POL (0x0F) +#define IAR_ANT_PAD_CTRL_ANTX_POL_SHIFT (4) +#define IAR_ANT_PAD_CTRL_ANTX_CTRLMODE BIT(3) +#define IAR_ANT_PAD_CTRL_ANTX_HZ BIT(2) +#define IAR_ANT_PAD_CTRL_ANTX_EN (3) + +/* MISC_PAD_CTRL bits */ +#define IAR_MISC_PAD_CTRL_MISO_HIZ_EN BIT(3) +#define IAR_MISC_PAD_CTRL_IRQ_B_OD BIT(2) +#define IAR_MISC_PAD_CTRL_NON_GPIO_DS BIT(1) +#define IAR_MISC_PAD_CTRL_ANTX_CURR (1) + +/* ANT_AGC_CTRL bits */ +#define IAR_ANT_AGC_CTRL_FAD_EN_SHIFT (0) +#define IAR_ANT_AGC_CTRL_FAD_EN_MASK (1) +#define IAR_ANT_AGC_CTRL_ANTX_SHIFT (1) +#define IAR_ANT_AGC_CTRL_ANTX_MASK BIT(AR_ANT_AGC_CTRL_ANTX_SHIFT) + +/* BSM_CTRL bits */ +#define BSM_CTRL_BSM_EN (1) + +/* SOFT_RESET bits */ +#define IAR_SOFT_RESET_SOG_RST BIT(7) +#define IAR_SOFT_RESET_REGS_RST BIT(4) +#define IAR_SOFT_RESET_PLL_RST BIT(3) +#define IAR_SOFT_RESET_TX_RST BIT(2) +#define IAR_SOFT_RESET_RX_RST BIT(1) +#define IAR_SOFT_RESET_SEQ_MGR_RST BIT(0) + +/* SEQ_MGR_CTRL bits */ +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL (3) +#define IAR_SEQ_MGR_CTRL_SEQ_STATE_CTRL_SHIFT (6) +#define IAR_SEQ_MGR_CTRL_NO_RX_RECYCLE BIT(5) +#define IAR_SEQ_MGR_CTRL_LATCH_PREAMBLE BIT(4) +#define IAR_SEQ_MGR_CTRL_EVENT_TMR_DO_NOT_LATCH BIT(3) +#define IAR_SEQ_MGR_CTRL_CLR_NEW_SEQ_INHIBIT BIT(2) +#define IAR_SEQ_MGR_CTRL_PSM_LOCK_DIS BIT(1) +#define IAR_SEQ_MGR_CTRL_PLL_ABORT_OVRD BIT(0) + +/* SEQ_MGR_STS bits */ +#define IAR_SEQ_MGR_STS_TMR2_SEQ_TRIG_ARMED BIT(7) +#define IAR_SEQ_MGR_STS_RX_MODE BIT(6) +#define IAR_SEQ_MGR_STS_RX_TIMEOUT_PENDING BIT(5) +#define IAR_SEQ_MGR_STS_NEW_SEQ_INHIBIT BIT(4) +#define IAR_SEQ_MGR_STS_SEQ_IDLE BIT(3) +#define IAR_SEQ_MGR_STS_XCVSEQ_ACTUAL (7) + +/* ABORT_STS bits */ +#define IAR_ABORT_STS_PLL_ABORTED BIT(2) +#define IAR_ABORT_STS_TC3_ABORTED BIT(1) +#define IAR_ABORT_STS_SW_ABORTED BIT(0) + +/* IAR_FILTERFAIL_CODE2 bits */ +#define IAR_FILTERFAIL_CODE2_PAN_SEL BIT(7) +#define IAR_FILTERFAIL_CODE2_9_8 (3) + +/* PHY_STS bits */ +#define IAR_PHY_STS_PLL_UNLOCK BIT(7) +#define IAR_PHY_STS_PLL_LOCK_ERR BIT(6) +#define IAR_PHY_STS_PLL_LOCK BIT(5) +#define IAR_PHY_STS_CRCVALID BIT(3) +#define IAR_PHY_STS_FILTERFAIL_FLAG_SEL BIT(2) +#define IAR_PHY_STS_SFD_DET BIT(1) +#define IAR_PHY_STS_PREAMBLE_DET BIT(0) + +/* TESTMODE_CTRL bits */ +#define IAR_TEST_MODE_CTRL_HOT_ANT BIT(4) +#define IAR_TEST_MODE_CTRL_IDEAL_RSSI_EN BIT(3) +#define IAR_TEST_MODE_CTRL_IDEAL_PFC_EN BIT(2) +#define IAR_TEST_MODE_CTRL_CONTINUOUS_EN BIT(1) +#define IAR_TEST_MODE_CTRL_FPGA_EN BIT(0) + +/* DTM_CTRL1 bits */ +#define IAR_DTM_CTRL1_ATM_LOCKED BIT(7) +#define IAR_DTM_CTRL1_DTM_EN BIT(6) +#define IAR_DTM_CTRL1_PAGE5 BIT(5) +#define IAR_DTM_CTRL1_PAGE4 BIT(4) +#define IAR_DTM_CTRL1_PAGE3 BIT(3) +#define IAR_DTM_CTRL1_PAGE2 BIT(2) +#define IAR_DTM_CTRL1_PAGE1 BIT(1) +#define IAR_DTM_CTRL1_PAGE0 BIT(0) + +/* TX_MODE_CTRL */ +#define IAR_TX_MODE_CTRL_TX_INV BIT(4) +#define IAR_TX_MODE_CTRL_BT_EN BIT(3) +#define IAR_TX_MODE_CTRL_DTS2 BIT(2) +#define IAR_TX_MODE_CTRL_DTS1 BIT(1) +#define IAR_TX_MODE_CTRL_DTS0 BIT(0) + +#define TX_MODE_CTRL_DTS_MASK (7) + +#endif /* _MCR20A_H */
This is a driver for the NXP MCR20A 802.15.4 transceiver. The MCR20AVHM transceiver (or MCR20A) is a low power, high-performance 2.4 GHz, IEEE 802.15.4 compliant transceiver. This driver implements a subset of ieee802154_ops. It has no support for CSMA due to lack of hardware support. It has currently no support for its proprietary feature: Dual PAN. https://www.nxp.com/docs/en/reference-manual/MCR20RM.pdf Signed-off-by: Xue Liu <liuxuenetmail@gmail.com> --- drivers/net/ieee802154/Kconfig | 11 + drivers/net/ieee802154/Makefile | 1 + drivers/net/ieee802154/mcr20a.c | 1460 +++++++++++++++++++++++++++++++++++++++ drivers/net/ieee802154/mcr20a.h | 498 +++++++++++++ 4 files changed, 1970 insertions(+) create mode 100644 drivers/net/ieee802154/mcr20a.c create mode 100644 drivers/net/ieee802154/mcr20a.h