@@ -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'.
@@ -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
new file mode 100644
@@ -0,0 +1,1413 @@
+/*
+ * 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;
+
+ print_hex_dump_debug("mcr20a tx: ", DUMP_PREFIX_OFFSET, 16, 1,
+ skb->data, skb->len, 0);
+
+ 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)
+{
+ WARN_ON(!level);
+ *level = 0xbe;
+ 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), "%s\n", __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]);
+
+ print_hex_dump_debug("mcr20a rx: ", DUMP_PREFIX_OFFSET, 16, 1,
+ lp->rx_buf, len, 0);
+ pr_debug("mcr20a rx: lqi: %02hhx\n", lp->rx_lqi[0]);
+
+ /* 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), "MCR20A DAR 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. */
+ 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 */
+ 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>");
new file mode 100644
@@ -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 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 Dual-PAN feature. 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 | 1413 +++++++++++++++++++++++++++++++++++++++ drivers/net/ieee802154/mcr20a.h | 498 ++++++++++++++ 4 files changed, 1923 insertions(+) create mode 100644 drivers/net/ieee802154/mcr20a.c create mode 100644 drivers/net/ieee802154/mcr20a.h