| Message ID | 1461682450-22173-4-git-send-email-w.egorov@phytec.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Ping. Do you have any more comments? On 26.04.2016 16:54, Wadim Egorov wrote: > The RK818 chip is a power management IC for multimedia and handheld > devices. It contains the following components: > > - Regulators > - RTC > - Clkout > - battery support > > Both chips RK808 and RK818 are using a similar register map. > So we can reuse the RTC and Clkout functionality. > > Signed-off-by: Wadim Egorov <w.egorov@phytec.de> > --- > Changes since v3: > - fixed file and module descriptions > --- > drivers/mfd/Kconfig | 4 +- > drivers/mfd/rk808.c | 229 +++++++++++++++++++++++++++++++++++++++------- > include/linux/mfd/rk808.h | 162 ++++++++++++++++++++++++++++++-- > 3 files changed, 349 insertions(+), 46 deletions(-) > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index eea61e3..0a5b1c0 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -814,13 +814,13 @@ config MFD_RC5T583 > different functionality of the device. > > config MFD_RK808 > - tristate "Rockchip RK808 Power Management chip" > + tristate "Rockchip RK808/RK818 Power Management chip" > depends on I2C && OF > select MFD_CORE > select REGMAP_I2C > select REGMAP_IRQ > help > - If you say yes here you get support for the RK808 > + If you say yes here you get support for the RK808 and RK818 > Power Management chips. > This driver provides common support for accessing the device > through I2C interface. The device supports multiple sub-devices > diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c > index 4b1e439..9bb7e8c 100644 > --- a/drivers/mfd/rk808.c > +++ b/drivers/mfd/rk808.c > @@ -1,11 +1,15 @@ > /* > - * MFD core driver for Rockchip RK808 > + * MFD core driver for Rockchip RK808/RK818 > * > * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd > * > * Author: Chris Zhong <zyw@rock-chips.com> > * Author: Zhang Qing <zhangqing@rock-chips.com> > * > + * Copyright (C) 2016 PHYTEC Messtechnik GmbH > + * > + * Author: Wadim Egorov <w.egorov@phytec.de> > + * > * This program is free software; you can redistribute it and/or modify it > * under the terms and conditions of the GNU General Public License, > * version 2, as published by the Free Software Foundation. > @@ -22,12 +26,7 @@ > #include <linux/mfd/core.h> > #include <linux/module.h> > #include <linux/regmap.h> > - > -struct rk808_reg_data { > - int addr; > - int mask; > - int value; > -}; > +#include <linux/of_device.h> > > static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) > { > @@ -57,6 +56,14 @@ static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) > return false; > } > > +static const struct regmap_config rk818_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .max_register = RK818_USB_CTRL_REG, > + .cache_type = REGCACHE_RBTREE, > + .volatile_reg = rk808_is_volatile_reg, > +}; > + > static const struct regmap_config rk808_regmap_config = { > .reg_bits = 8, > .val_bits = 8, > @@ -83,7 +90,17 @@ static const struct mfd_cell rk808s[] = { > }, > }; > > -static const struct rk808_reg_data pre_init_reg[] = { > +static const struct mfd_cell rk818s[] = { > + { .name = "rk808-clkout", }, > + { .name = "rk808-regulator", }, > + { > + .name = "rk808-rtc", > + .num_resources = ARRAY_SIZE(rtc_resources), > + .resources = &rtc_resources[0], > + }, > +}; > + > +static const struct rk8xx_reg_data rk808_pre_init_reg[] = { > { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, > { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, > { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, > @@ -94,6 +111,22 @@ static const struct rk808_reg_data pre_init_reg[] = { > VB_LO_SEL_3500MV }, > }; > > +static const struct rk8xx_reg_data rk818_pre_init_reg[] = { > + { RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK, > + RK818_USB_ILMIN_2000MA }, > + /* close charger when usb lower then 3.4V */ > + { RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK, (0x7 << 4) }, > + /* no action when vref */ > + { RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL }, > + /* enable HDMI 5V */ > + { RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN }, > + /* improve efficiency */ > + { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA }, > + { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA }, > + { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, > + { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, > +}; > + > static const struct regmap_irq rk808_irqs[] = { > /* INT_STS */ > [RK808_IRQ_VOUT_LO] = { > @@ -136,6 +169,76 @@ static const struct regmap_irq rk808_irqs[] = { > }, > }; > > +static const struct regmap_irq rk818_irqs[] = { > + /* INT_STS */ > + [RK818_IRQ_VOUT_LO] = { > + .mask = RK818_IRQ_VOUT_LO_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_VB_LO] = { > + .mask = RK818_IRQ_VB_LO_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_PWRON] = { > + .mask = RK818_IRQ_PWRON_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_PWRON_LP] = { > + .mask = RK818_IRQ_PWRON_LP_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_HOTDIE] = { > + .mask = RK818_IRQ_HOTDIE_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_RTC_ALARM] = { > + .mask = RK818_IRQ_RTC_ALARM_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_RTC_PERIOD] = { > + .mask = RK818_IRQ_RTC_PERIOD_MSK, > + .reg_offset = 0, > + }, > + [RK818_IRQ_USB_OV] = { > + .mask = RK818_IRQ_USB_OV_MSK, > + .reg_offset = 0, > + }, > + > + /* INT_STS2 */ > + [RK818_IRQ_PLUG_IN] = { > + .mask = RK818_IRQ_PLUG_IN_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_PLUG_OUT] = { > + .mask = RK818_IRQ_PLUG_OUT_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_CHG_OK] = { > + .mask = RK818_IRQ_CHG_OK_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_CHG_TE] = { > + .mask = RK818_IRQ_CHG_TE_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_CHG_TS1] = { > + .mask = RK818_IRQ_CHG_TS1_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_TS2] = { > + .mask = RK818_IRQ_TS2_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_CHG_CVTLIM] = { > + .mask = RK818_IRQ_CHG_CVTLIM_MSK, > + .reg_offset = 1, > + }, > + [RK818_IRQ_DISCHG_ILIM] = { > + .mask = RK818_IRQ_DISCHG_ILIM_MSK, > + .reg_offset = 1, > + }, > +}; > + > static struct regmap_irq_chip rk808_irq_chip = { > .name = "rk808", > .irqs = rk808_irqs, > @@ -148,6 +251,18 @@ static struct regmap_irq_chip rk808_irq_chip = { > .init_ack_masked = true, > }; > > +static struct regmap_irq_chip rk818_irq_chip = { > + .name = "rk818", > + .irqs = rk818_irqs, > + .num_irqs = ARRAY_SIZE(rk818_irqs), > + .num_regs = 2, > + .irq_reg_stride = 2, > + .status_base = RK818_INT_STS_REG1, > + .mask_base = RK818_INT_STS_MSK_REG1, > + .ack_base = RK818_INT_STS_REG1, > + .init_ack_masked = true, > +}; > + > static struct i2c_client *rk808_i2c_client; > static void rk808_device_shutdown(void) > { > @@ -167,6 +282,48 @@ static void rk808_device_shutdown(void) > dev_err(&rk808_i2c_client->dev, "power off error!\n"); > } > > +static const struct of_device_id rk808_of_match[] = { > + { .compatible = "rockchip,rk808", .data = (void *) RK808_ID }, > + { .compatible = "rockchip,rk818", .data = (void *) RK818_ID }, > + { }, > +}; > +MODULE_DEVICE_TABLE(of, rk808_of_match); > + > +static int rk8xx_match_device(struct rk808 *rk808, struct device *dev) > +{ > + const struct of_device_id *of_id; > + > + of_id = of_match_device(rk808_of_match, dev); > + if (!of_id) { > + dev_err(dev, "Unable to match OF ID\n"); > + return -ENODEV; > + } > + rk808->variant = (long) of_id->data; > + > + switch (rk808->variant) { > + case RK808_ID: > + rk808->nr_cells = ARRAY_SIZE(rk808s); > + rk808->cells = rk808s; > + rk808->regmap_cfg = &rk808_regmap_config; > + rk808->regmap_irq_chip = &rk808_irq_chip; > + rk808->pre_init_reg = rk808_pre_init_reg; > + rk808->nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg); > + break; > + case RK818_ID: > + rk808->nr_cells = ARRAY_SIZE(rk818s); > + rk808->cells = rk818s; > + rk808->regmap_cfg = &rk818_regmap_config; > + rk808->regmap_irq_chip = &rk818_irq_chip; > + rk808->pre_init_reg = rk818_pre_init_reg; > + rk808->nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg); > + break; > + default: > + dev_err(dev, "unsupported RK8XX ID %lu\n", rk808->variant); > + return -EINVAL; > + } > + > + return 0; > +} > static int rk808_probe(struct i2c_client *client, > const struct i2c_device_id *id) > { > @@ -176,45 +333,51 @@ static int rk808_probe(struct i2c_client *client, > int ret; > int i; > > - if (!client->irq) { > - dev_err(&client->dev, "No interrupt support, no core IRQ\n"); > - return -EINVAL; > - } > - > rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL); > if (!rk808) > return -ENOMEM; > > - rk808->regmap = devm_regmap_init_i2c(client, &rk808_regmap_config); > + ret = rk8xx_match_device(rk808, &client->dev); > + if (ret) > + return ret; > + > + rk808->i2c = client; > + i2c_set_clientdata(client, rk808); > + > + rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg); > if (IS_ERR(rk808->regmap)) { > dev_err(&client->dev, "regmap initialization failed\n"); > return PTR_ERR(rk808->regmap); > } > > - for (i = 0; i < ARRAY_SIZE(pre_init_reg); i++) { > - ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, > - pre_init_reg[i].mask, > - pre_init_reg[i].value); > - if (ret) { > - dev_err(&client->dev, > - "0x%x write err\n", pre_init_reg[i].addr); > - return ret; > - } > + if (!client->irq) { > + dev_err(&client->dev, "No interrupt support, no core IRQ\n"); > + return -EINVAL; > } > > ret = regmap_add_irq_chip(rk808->regmap, client->irq, > IRQF_ONESHOT, -1, > - &rk808_irq_chip, &rk808->irq_data); > + rk808->regmap_irq_chip, &rk808->irq_data); > if (ret) { > dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); > return ret; > } > > - rk808->i2c = client; > - i2c_set_clientdata(client, rk808); > + for (i = 0; i < rk808->nr_pre_init_regs; i++) { > + ret = regmap_update_bits(rk808->regmap, > + rk808->pre_init_reg[i].addr, > + rk808->pre_init_reg[i].mask, > + rk808->pre_init_reg[i].value); > + if (ret) { > + dev_err(&client->dev, > + "0x%x write err\n", > + rk808->pre_init_reg[i].addr); > + return ret; > + } > + } > > - ret = mfd_add_devices(&client->dev, -1, > - rk808s, ARRAY_SIZE(rk808s), > + ret = mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, > + rk808->cells, rk808->nr_cells, > NULL, 0, regmap_irq_get_domain(rk808->irq_data)); > if (ret) { > dev_err(&client->dev, "failed to add MFD devices %d\n", ret); > @@ -246,14 +409,9 @@ static int rk808_remove(struct i2c_client *client) > return 0; > } > > -static const struct of_device_id rk808_of_match[] = { > - { .compatible = "rockchip,rk808" }, > - { }, > -}; > -MODULE_DEVICE_TABLE(of, rk808_of_match); > - > static const struct i2c_device_id rk808_ids[] = { > { "rk808" }, > + { "rk818" }, > { }, > }; > MODULE_DEVICE_TABLE(i2c, rk808_ids); > @@ -273,4 +431,5 @@ module_i2c_driver(rk808_i2c_driver); > MODULE_LICENSE("GPL"); > MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>"); > MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>"); > -MODULE_DESCRIPTION("RK808 PMIC driver"); > +MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>"); > +MODULE_DESCRIPTION("RK808/RK818 PMIC driver"); > diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h > index 441b6ee..5ce810c 100644 > --- a/include/linux/mfd/rk808.h > +++ b/include/linux/mfd/rk808.h > @@ -1,11 +1,15 @@ > /* > - * rk808.h for Rockchip RK808 > + * Register definitions for Rockchip's RK808/RK818 PMIC > * > * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd > * > * Author: Chris Zhong <zyw@rock-chips.com> > * Author: Zhang Qing <zhangqing@rock-chips.com> > * > + * Copyright (C) 2016 PHYTEC Messtechnik GmbH > + * > + * Author: Wadim Egorov <w.egorov@phytec.de> > + * > * This program is free software; you can redistribute it and/or modify it > * under the terms and conditions of the GNU General Public License, > * version 2, as published by the Free Software Foundation. > @@ -16,8 +20,8 @@ > * more details. > */ > > -#ifndef __LINUX_REGULATOR_rk808_H > -#define __LINUX_REGULATOR_rk808_H > +#ifndef __LINUX_REGULATOR_RK808_H > +#define __LINUX_REGULATOR_RK808_H > > #include <linux/regulator/machine.h> > #include <linux/regmap.h> > @@ -28,7 +32,7 @@ > > #define RK808_DCDC1 0 /* (0+RK808_START) */ > #define RK808_LDO1 4 /* (4+RK808_START) */ > -#define RK808_NUM_REGULATORS 14 > +#define RK808_NUM_REGULATORS 14 > > enum rk808_reg { > RK808_ID_DCDC1, > @@ -115,7 +119,92 @@ enum rk808_reg { > #define RK808_INT_STS_MSK_REG2 0x4f > #define RK808_IO_POL_REG 0x50 > > -/* IRQ Definitions */ > +/* RK818 */ > +#define RK818_DCDC1 0 > +#define RK818_LDO1 4 > +#define RK818_NUM_REGULATORS 17 > + > +enum rk818_reg { > + RK818_ID_DCDC1, > + RK818_ID_DCDC2, > + RK818_ID_DCDC3, > + RK818_ID_DCDC4, > + RK818_ID_BOOST, > + RK818_ID_LDO1, > + RK818_ID_LDO2, > + RK818_ID_LDO3, > + RK818_ID_LDO4, > + RK818_ID_LDO5, > + RK818_ID_LDO6, > + RK818_ID_LDO7, > + RK818_ID_LDO8, > + RK818_ID_LDO9, > + RK818_ID_SWITCH, > + RK818_ID_HDMI_SWITCH, > + RK818_ID_OTG_SWITCH, > +}; > + > +#define RK818_DCDC_EN_REG 0x23 > +#define RK818_LDO_EN_REG 0x24 > +#define RK818_SLEEP_SET_OFF_REG1 0x25 > +#define RK818_SLEEP_SET_OFF_REG2 0x26 > +#define RK818_DCDC_UV_STS_REG 0x27 > +#define RK818_DCDC_UV_ACT_REG 0x28 > +#define RK818_LDO_UV_STS_REG 0x29 > +#define RK818_LDO_UV_ACT_REG 0x2a > +#define RK818_DCDC_PG_REG 0x2b > +#define RK818_LDO_PG_REG 0x2c > +#define RK818_VOUT_MON_TDB_REG 0x2d > +#define RK818_BUCK1_CONFIG_REG 0x2e > +#define RK818_BUCK1_ON_VSEL_REG 0x2f > +#define RK818_BUCK1_SLP_VSEL_REG 0x30 > +#define RK818_BUCK2_CONFIG_REG 0x32 > +#define RK818_BUCK2_ON_VSEL_REG 0x33 > +#define RK818_BUCK2_SLP_VSEL_REG 0x34 > +#define RK818_BUCK3_CONFIG_REG 0x36 > +#define RK818_BUCK4_CONFIG_REG 0x37 > +#define RK818_BUCK4_ON_VSEL_REG 0x38 > +#define RK818_BUCK4_SLP_VSEL_REG 0x39 > +#define RK818_BOOST_CONFIG_REG 0x3a > +#define RK818_LDO1_ON_VSEL_REG 0x3b > +#define RK818_LDO1_SLP_VSEL_REG 0x3c > +#define RK818_LDO2_ON_VSEL_REG 0x3d > +#define RK818_LDO2_SLP_VSEL_REG 0x3e > +#define RK818_LDO3_ON_VSEL_REG 0x3f > +#define RK818_LDO3_SLP_VSEL_REG 0x40 > +#define RK818_LDO4_ON_VSEL_REG 0x41 > +#define RK818_LDO4_SLP_VSEL_REG 0x42 > +#define RK818_LDO5_ON_VSEL_REG 0x43 > +#define RK818_LDO5_SLP_VSEL_REG 0x44 > +#define RK818_LDO6_ON_VSEL_REG 0x45 > +#define RK818_LDO6_SLP_VSEL_REG 0x46 > +#define RK818_LDO7_ON_VSEL_REG 0x47 > +#define RK818_LDO7_SLP_VSEL_REG 0x48 > +#define RK818_LDO8_ON_VSEL_REG 0x49 > +#define RK818_LDO8_SLP_VSEL_REG 0x4a > +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 > +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 > +#define RK818_DEVCTRL_REG 0x4b > +#define RK818_INT_STS_REG1 0X4c > +#define RK818_INT_STS_MSK_REG1 0x4d > +#define RK818_INT_STS_REG2 0x4e > +#define RK818_INT_STS_MSK_REG2 0x4f > +#define RK818_IO_POL_REG 0x50 > +#define RK818_H5V_EN_REG 0x52 > +#define RK818_SLEEP_SET_OFF_REG3 0x53 > +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 > +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 > +#define RK818_BOOST_CTRL_REG 0x56 > +#define RK818_DCDC_ILMAX 0x90 > +#define RK818_USB_CTRL_REG 0xa1 > + > +#define RK818_H5V_EN BIT(0) > +#define RK818_REF_RDY_CTRL BIT(1) > +#define RK818_USB_ILIM_SEL_MASK 0xf > +#define RK818_USB_ILMIN_2000MA 0x7 > +#define RK818_USB_CHG_SD_VSEL_MASK 0x70 > + > +/* RK808 IRQ Definitions */ > #define RK808_IRQ_VOUT_LO 0 > #define RK808_IRQ_VB_LO 1 > #define RK808_IRQ_PWRON 2 > @@ -137,6 +226,43 @@ enum rk808_reg { > #define RK808_IRQ_PLUG_IN_INT_MSK BIT(0) > #define RK808_IRQ_PLUG_OUT_INT_MSK BIT(1) > > +/* RK818 IRQ Definitions */ > +#define RK818_IRQ_VOUT_LO 0 > +#define RK818_IRQ_VB_LO 1 > +#define RK818_IRQ_PWRON 2 > +#define RK818_IRQ_PWRON_LP 3 > +#define RK818_IRQ_HOTDIE 4 > +#define RK818_IRQ_RTC_ALARM 5 > +#define RK818_IRQ_RTC_PERIOD 6 > +#define RK818_IRQ_USB_OV 7 > +#define RK818_IRQ_PLUG_IN 8 > +#define RK818_IRQ_PLUG_OUT 9 > +#define RK818_IRQ_CHG_OK 10 > +#define RK818_IRQ_CHG_TE 11 > +#define RK818_IRQ_CHG_TS1 12 > +#define RK818_IRQ_TS2 13 > +#define RK818_IRQ_CHG_CVTLIM 14 > +#define RK818_IRQ_DISCHG_ILIM 7 > + > +#define RK818_IRQ_VOUT_LO_MSK BIT(0) > +#define RK818_IRQ_VB_LO_MSK BIT(1) > +#define RK818_IRQ_PWRON_MSK BIT(2) > +#define RK818_IRQ_PWRON_LP_MSK BIT(3) > +#define RK818_IRQ_HOTDIE_MSK BIT(4) > +#define RK818_IRQ_RTC_ALARM_MSK BIT(5) > +#define RK818_IRQ_RTC_PERIOD_MSK BIT(6) > +#define RK818_IRQ_USB_OV_MSK BIT(7) > +#define RK818_IRQ_PLUG_IN_MSK BIT(0) > +#define RK818_IRQ_PLUG_OUT_MSK BIT(1) > +#define RK818_IRQ_CHG_OK_MSK BIT(2) > +#define RK818_IRQ_CHG_TE_MSK BIT(3) > +#define RK818_IRQ_CHG_TS1_MSK BIT(4) > +#define RK818_IRQ_TS2_MSK BIT(5) > +#define RK818_IRQ_CHG_CVTLIM_MSK BIT(6) > +#define RK818_IRQ_DISCHG_ILIM_MSK BIT(7) > + > +#define RK818_NUM_IRQ 16 > + > #define RK808_VBAT_LOW_2V8 0x00 > #define RK808_VBAT_LOW_2V9 0x01 > #define RK808_VBAT_LOW_3V0 0x02 > @@ -191,9 +317,27 @@ enum { > BOOST_ILMIN_250MA, > }; > > +enum { > + RK808_ID, > + RK818_ID, > +}; > + > +struct rk8xx_reg_data { > + int addr; > + int mask; > + int value; > +}; > + > struct rk808 { > - struct i2c_client *i2c; > - struct regmap_irq_chip_data *irq_data; > - struct regmap *regmap; > + struct i2c_client *i2c; > + struct regmap_irq_chip_data *irq_data; > + struct regmap *regmap; > + long variant; > + int nr_cells; > + const struct mfd_cell *cells; > + const struct regmap_config *regmap_cfg; > + const struct regmap_irq_chip *regmap_irq_chip; > + const struct rk8xx_reg_data *pre_init_reg; > + int nr_pre_init_regs; > }; > -#endif /* __LINUX_REGULATOR_rk808_H */ > +#endif /* __LINUX_REGULATOR_RK808_H */
On Tue, 10 May 2016, Wadim Egorov wrote: > Ping. Don't ping. It only serves to annoy! > Do you have any more comments? Just re-submit the set with the Acks you've collected. > On 26.04.2016 16:54, Wadim Egorov wrote: > > The RK818 chip is a power management IC for multimedia and handheld > > devices. It contains the following components: > > > > - Regulators > > - RTC > > - Clkout > > - battery support > > > > Both chips RK808 and RK818 are using a similar register map. > > So we can reuse the RTC and Clkout functionality. > > > > Signed-off-by: Wadim Egorov <w.egorov@phytec.de> > > --- > > Changes since v3: > > - fixed file and module descriptions > > --- > > drivers/mfd/Kconfig | 4 +- > > drivers/mfd/rk808.c | 229 +++++++++++++++++++++++++++++++++++++++------- > > include/linux/mfd/rk808.h | 162 ++++++++++++++++++++++++++++++-- > > 3 files changed, 349 insertions(+), 46 deletions(-) > > > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > > index eea61e3..0a5b1c0 100644 > > --- a/drivers/mfd/Kconfig > > +++ b/drivers/mfd/Kconfig > > @@ -814,13 +814,13 @@ config MFD_RC5T583 > > different functionality of the device. > > > > config MFD_RK808 > > - tristate "Rockchip RK808 Power Management chip" > > + tristate "Rockchip RK808/RK818 Power Management chip" > > depends on I2C && OF > > select MFD_CORE > > select REGMAP_I2C > > select REGMAP_IRQ > > help > > - If you say yes here you get support for the RK808 > > + If you say yes here you get support for the RK808 and RK818 > > Power Management chips. > > This driver provides common support for accessing the device > > through I2C interface. The device supports multiple sub-devices > > diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c > > index 4b1e439..9bb7e8c 100644 > > --- a/drivers/mfd/rk808.c > > +++ b/drivers/mfd/rk808.c > > @@ -1,11 +1,15 @@ > > /* > > - * MFD core driver for Rockchip RK808 > > + * MFD core driver for Rockchip RK808/RK818 > > * > > * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd > > * > > * Author: Chris Zhong <zyw@rock-chips.com> > > * Author: Zhang Qing <zhangqing@rock-chips.com> > > * > > + * Copyright (C) 2016 PHYTEC Messtechnik GmbH > > + * > > + * Author: Wadim Egorov <w.egorov@phytec.de> > > + * > > * This program is free software; you can redistribute it and/or modify it > > * under the terms and conditions of the GNU General Public License, > > * version 2, as published by the Free Software Foundation. > > @@ -22,12 +26,7 @@ > > #include <linux/mfd/core.h> > > #include <linux/module.h> > > #include <linux/regmap.h> > > - > > -struct rk808_reg_data { > > - int addr; > > - int mask; > > - int value; > > -}; > > +#include <linux/of_device.h> > > > > static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) > > { > > @@ -57,6 +56,14 @@ static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) > > return false; > > } > > > > +static const struct regmap_config rk818_regmap_config = { > > + .reg_bits = 8, > > + .val_bits = 8, > > + .max_register = RK818_USB_CTRL_REG, > > + .cache_type = REGCACHE_RBTREE, > > + .volatile_reg = rk808_is_volatile_reg, > > +}; > > + > > static const struct regmap_config rk808_regmap_config = { > > .reg_bits = 8, > > .val_bits = 8, > > @@ -83,7 +90,17 @@ static const struct mfd_cell rk808s[] = { > > }, > > }; > > > > -static const struct rk808_reg_data pre_init_reg[] = { > > +static const struct mfd_cell rk818s[] = { > > + { .name = "rk808-clkout", }, > > + { .name = "rk808-regulator", }, > > + { > > + .name = "rk808-rtc", > > + .num_resources = ARRAY_SIZE(rtc_resources), > > + .resources = &rtc_resources[0], > > + }, > > +}; > > + > > +static const struct rk8xx_reg_data rk808_pre_init_reg[] = { > > { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, > > { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, > > { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, > > @@ -94,6 +111,22 @@ static const struct rk808_reg_data pre_init_reg[] = { > > VB_LO_SEL_3500MV }, > > }; > > > > +static const struct rk8xx_reg_data rk818_pre_init_reg[] = { > > + { RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK, > > + RK818_USB_ILMIN_2000MA }, > > + /* close charger when usb lower then 3.4V */ > > + { RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK, (0x7 << 4) }, > > + /* no action when vref */ > > + { RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL }, > > + /* enable HDMI 5V */ > > + { RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN }, > > + /* improve efficiency */ > > + { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA }, > > + { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA }, > > + { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, > > + { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, > > +}; > > + > > static const struct regmap_irq rk808_irqs[] = { > > /* INT_STS */ > > [RK808_IRQ_VOUT_LO] = { > > @@ -136,6 +169,76 @@ static const struct regmap_irq rk808_irqs[] = { > > }, > > }; > > > > +static const struct regmap_irq rk818_irqs[] = { > > + /* INT_STS */ > > + [RK818_IRQ_VOUT_LO] = { > > + .mask = RK818_IRQ_VOUT_LO_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_VB_LO] = { > > + .mask = RK818_IRQ_VB_LO_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_PWRON] = { > > + .mask = RK818_IRQ_PWRON_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_PWRON_LP] = { > > + .mask = RK818_IRQ_PWRON_LP_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_HOTDIE] = { > > + .mask = RK818_IRQ_HOTDIE_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_RTC_ALARM] = { > > + .mask = RK818_IRQ_RTC_ALARM_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_RTC_PERIOD] = { > > + .mask = RK818_IRQ_RTC_PERIOD_MSK, > > + .reg_offset = 0, > > + }, > > + [RK818_IRQ_USB_OV] = { > > + .mask = RK818_IRQ_USB_OV_MSK, > > + .reg_offset = 0, > > + }, > > + > > + /* INT_STS2 */ > > + [RK818_IRQ_PLUG_IN] = { > > + .mask = RK818_IRQ_PLUG_IN_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_PLUG_OUT] = { > > + .mask = RK818_IRQ_PLUG_OUT_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_CHG_OK] = { > > + .mask = RK818_IRQ_CHG_OK_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_CHG_TE] = { > > + .mask = RK818_IRQ_CHG_TE_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_CHG_TS1] = { > > + .mask = RK818_IRQ_CHG_TS1_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_TS2] = { > > + .mask = RK818_IRQ_TS2_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_CHG_CVTLIM] = { > > + .mask = RK818_IRQ_CHG_CVTLIM_MSK, > > + .reg_offset = 1, > > + }, > > + [RK818_IRQ_DISCHG_ILIM] = { > > + .mask = RK818_IRQ_DISCHG_ILIM_MSK, > > + .reg_offset = 1, > > + }, > > +}; > > + > > static struct regmap_irq_chip rk808_irq_chip = { > > .name = "rk808", > > .irqs = rk808_irqs, > > @@ -148,6 +251,18 @@ static struct regmap_irq_chip rk808_irq_chip = { > > .init_ack_masked = true, > > }; > > > > +static struct regmap_irq_chip rk818_irq_chip = { > > + .name = "rk818", > > + .irqs = rk818_irqs, > > + .num_irqs = ARRAY_SIZE(rk818_irqs), > > + .num_regs = 2, > > + .irq_reg_stride = 2, > > + .status_base = RK818_INT_STS_REG1, > > + .mask_base = RK818_INT_STS_MSK_REG1, > > + .ack_base = RK818_INT_STS_REG1, > > + .init_ack_masked = true, > > +}; > > + > > static struct i2c_client *rk808_i2c_client; > > static void rk808_device_shutdown(void) > > { > > @@ -167,6 +282,48 @@ static void rk808_device_shutdown(void) > > dev_err(&rk808_i2c_client->dev, "power off error!\n"); > > } > > > > +static const struct of_device_id rk808_of_match[] = { > > + { .compatible = "rockchip,rk808", .data = (void *) RK808_ID }, > > + { .compatible = "rockchip,rk818", .data = (void *) RK818_ID }, > > + { }, > > +}; > > +MODULE_DEVICE_TABLE(of, rk808_of_match); > > + > > +static int rk8xx_match_device(struct rk808 *rk808, struct device *dev) > > +{ > > + const struct of_device_id *of_id; > > + > > + of_id = of_match_device(rk808_of_match, dev); > > + if (!of_id) { > > + dev_err(dev, "Unable to match OF ID\n"); > > + return -ENODEV; > > + } > > + rk808->variant = (long) of_id->data; > > + > > + switch (rk808->variant) { > > + case RK808_ID: > > + rk808->nr_cells = ARRAY_SIZE(rk808s); > > + rk808->cells = rk808s; > > + rk808->regmap_cfg = &rk808_regmap_config; > > + rk808->regmap_irq_chip = &rk808_irq_chip; > > + rk808->pre_init_reg = rk808_pre_init_reg; > > + rk808->nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg); > > + break; > > + case RK818_ID: > > + rk808->nr_cells = ARRAY_SIZE(rk818s); > > + rk808->cells = rk818s; > > + rk808->regmap_cfg = &rk818_regmap_config; > > + rk808->regmap_irq_chip = &rk818_irq_chip; > > + rk808->pre_init_reg = rk818_pre_init_reg; > > + rk808->nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg); > > + break; > > + default: > > + dev_err(dev, "unsupported RK8XX ID %lu\n", rk808->variant); > > + return -EINVAL; > > + } > > + > > + return 0; > > +} > > static int rk808_probe(struct i2c_client *client, > > const struct i2c_device_id *id) > > { > > @@ -176,45 +333,51 @@ static int rk808_probe(struct i2c_client *client, > > int ret; > > int i; > > > > - if (!client->irq) { > > - dev_err(&client->dev, "No interrupt support, no core IRQ\n"); > > - return -EINVAL; > > - } > > - > > rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL); > > if (!rk808) > > return -ENOMEM; > > > > - rk808->regmap = devm_regmap_init_i2c(client, &rk808_regmap_config); > > + ret = rk8xx_match_device(rk808, &client->dev); > > + if (ret) > > + return ret; > > + > > + rk808->i2c = client; > > + i2c_set_clientdata(client, rk808); > > + > > + rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg); > > if (IS_ERR(rk808->regmap)) { > > dev_err(&client->dev, "regmap initialization failed\n"); > > return PTR_ERR(rk808->regmap); > > } > > > > - for (i = 0; i < ARRAY_SIZE(pre_init_reg); i++) { > > - ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, > > - pre_init_reg[i].mask, > > - pre_init_reg[i].value); > > - if (ret) { > > - dev_err(&client->dev, > > - "0x%x write err\n", pre_init_reg[i].addr); > > - return ret; > > - } > > + if (!client->irq) { > > + dev_err(&client->dev, "No interrupt support, no core IRQ\n"); > > + return -EINVAL; > > } > > > > ret = regmap_add_irq_chip(rk808->regmap, client->irq, > > IRQF_ONESHOT, -1, > > - &rk808_irq_chip, &rk808->irq_data); > > + rk808->regmap_irq_chip, &rk808->irq_data); > > if (ret) { > > dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); > > return ret; > > } > > > > - rk808->i2c = client; > > - i2c_set_clientdata(client, rk808); > > + for (i = 0; i < rk808->nr_pre_init_regs; i++) { > > + ret = regmap_update_bits(rk808->regmap, > > + rk808->pre_init_reg[i].addr, > > + rk808->pre_init_reg[i].mask, > > + rk808->pre_init_reg[i].value); > > + if (ret) { > > + dev_err(&client->dev, > > + "0x%x write err\n", > > + rk808->pre_init_reg[i].addr); > > + return ret; > > + } > > + } > > > > - ret = mfd_add_devices(&client->dev, -1, > > - rk808s, ARRAY_SIZE(rk808s), > > + ret = mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, > > + rk808->cells, rk808->nr_cells, > > NULL, 0, regmap_irq_get_domain(rk808->irq_data)); > > if (ret) { > > dev_err(&client->dev, "failed to add MFD devices %d\n", ret); > > @@ -246,14 +409,9 @@ static int rk808_remove(struct i2c_client *client) > > return 0; > > } > > > > -static const struct of_device_id rk808_of_match[] = { > > - { .compatible = "rockchip,rk808" }, > > - { }, > > -}; > > -MODULE_DEVICE_TABLE(of, rk808_of_match); > > - > > static const struct i2c_device_id rk808_ids[] = { > > { "rk808" }, > > + { "rk818" }, > > { }, > > }; > > MODULE_DEVICE_TABLE(i2c, rk808_ids); > > @@ -273,4 +431,5 @@ module_i2c_driver(rk808_i2c_driver); > > MODULE_LICENSE("GPL"); > > MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>"); > > MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>"); > > -MODULE_DESCRIPTION("RK808 PMIC driver"); > > +MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>"); > > +MODULE_DESCRIPTION("RK808/RK818 PMIC driver"); > > diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h > > index 441b6ee..5ce810c 100644 > > --- a/include/linux/mfd/rk808.h > > +++ b/include/linux/mfd/rk808.h > > @@ -1,11 +1,15 @@ > > /* > > - * rk808.h for Rockchip RK808 > > + * Register definitions for Rockchip's RK808/RK818 PMIC > > * > > * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd > > * > > * Author: Chris Zhong <zyw@rock-chips.com> > > * Author: Zhang Qing <zhangqing@rock-chips.com> > > * > > + * Copyright (C) 2016 PHYTEC Messtechnik GmbH > > + * > > + * Author: Wadim Egorov <w.egorov@phytec.de> > > + * > > * This program is free software; you can redistribute it and/or modify it > > * under the terms and conditions of the GNU General Public License, > > * version 2, as published by the Free Software Foundation. > > @@ -16,8 +20,8 @@ > > * more details. > > */ > > > > -#ifndef __LINUX_REGULATOR_rk808_H > > -#define __LINUX_REGULATOR_rk808_H > > +#ifndef __LINUX_REGULATOR_RK808_H > > +#define __LINUX_REGULATOR_RK808_H > > > > #include <linux/regulator/machine.h> > > #include <linux/regmap.h> > > @@ -28,7 +32,7 @@ > > > > #define RK808_DCDC1 0 /* (0+RK808_START) */ > > #define RK808_LDO1 4 /* (4+RK808_START) */ > > -#define RK808_NUM_REGULATORS 14 > > +#define RK808_NUM_REGULATORS 14 > > > > enum rk808_reg { > > RK808_ID_DCDC1, > > @@ -115,7 +119,92 @@ enum rk808_reg { > > #define RK808_INT_STS_MSK_REG2 0x4f > > #define RK808_IO_POL_REG 0x50 > > > > -/* IRQ Definitions */ > > +/* RK818 */ > > +#define RK818_DCDC1 0 > > +#define RK818_LDO1 4 > > +#define RK818_NUM_REGULATORS 17 > > + > > +enum rk818_reg { > > + RK818_ID_DCDC1, > > + RK818_ID_DCDC2, > > + RK818_ID_DCDC3, > > + RK818_ID_DCDC4, > > + RK818_ID_BOOST, > > + RK818_ID_LDO1, > > + RK818_ID_LDO2, > > + RK818_ID_LDO3, > > + RK818_ID_LDO4, > > + RK818_ID_LDO5, > > + RK818_ID_LDO6, > > + RK818_ID_LDO7, > > + RK818_ID_LDO8, > > + RK818_ID_LDO9, > > + RK818_ID_SWITCH, > > + RK818_ID_HDMI_SWITCH, > > + RK818_ID_OTG_SWITCH, > > +}; > > + > > +#define RK818_DCDC_EN_REG 0x23 > > +#define RK818_LDO_EN_REG 0x24 > > +#define RK818_SLEEP_SET_OFF_REG1 0x25 > > +#define RK818_SLEEP_SET_OFF_REG2 0x26 > > +#define RK818_DCDC_UV_STS_REG 0x27 > > +#define RK818_DCDC_UV_ACT_REG 0x28 > > +#define RK818_LDO_UV_STS_REG 0x29 > > +#define RK818_LDO_UV_ACT_REG 0x2a > > +#define RK818_DCDC_PG_REG 0x2b > > +#define RK818_LDO_PG_REG 0x2c > > +#define RK818_VOUT_MON_TDB_REG 0x2d > > +#define RK818_BUCK1_CONFIG_REG 0x2e > > +#define RK818_BUCK1_ON_VSEL_REG 0x2f > > +#define RK818_BUCK1_SLP_VSEL_REG 0x30 > > +#define RK818_BUCK2_CONFIG_REG 0x32 > > +#define RK818_BUCK2_ON_VSEL_REG 0x33 > > +#define RK818_BUCK2_SLP_VSEL_REG 0x34 > > +#define RK818_BUCK3_CONFIG_REG 0x36 > > +#define RK818_BUCK4_CONFIG_REG 0x37 > > +#define RK818_BUCK4_ON_VSEL_REG 0x38 > > +#define RK818_BUCK4_SLP_VSEL_REG 0x39 > > +#define RK818_BOOST_CONFIG_REG 0x3a > > +#define RK818_LDO1_ON_VSEL_REG 0x3b > > +#define RK818_LDO1_SLP_VSEL_REG 0x3c > > +#define RK818_LDO2_ON_VSEL_REG 0x3d > > +#define RK818_LDO2_SLP_VSEL_REG 0x3e > > +#define RK818_LDO3_ON_VSEL_REG 0x3f > > +#define RK818_LDO3_SLP_VSEL_REG 0x40 > > +#define RK818_LDO4_ON_VSEL_REG 0x41 > > +#define RK818_LDO4_SLP_VSEL_REG 0x42 > > +#define RK818_LDO5_ON_VSEL_REG 0x43 > > +#define RK818_LDO5_SLP_VSEL_REG 0x44 > > +#define RK818_LDO6_ON_VSEL_REG 0x45 > > +#define RK818_LDO6_SLP_VSEL_REG 0x46 > > +#define RK818_LDO7_ON_VSEL_REG 0x47 > > +#define RK818_LDO7_SLP_VSEL_REG 0x48 > > +#define RK818_LDO8_ON_VSEL_REG 0x49 > > +#define RK818_LDO8_SLP_VSEL_REG 0x4a > > +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 > > +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 > > +#define RK818_DEVCTRL_REG 0x4b > > +#define RK818_INT_STS_REG1 0X4c > > +#define RK818_INT_STS_MSK_REG1 0x4d > > +#define RK818_INT_STS_REG2 0x4e > > +#define RK818_INT_STS_MSK_REG2 0x4f > > +#define RK818_IO_POL_REG 0x50 > > +#define RK818_H5V_EN_REG 0x52 > > +#define RK818_SLEEP_SET_OFF_REG3 0x53 > > +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 > > +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 > > +#define RK818_BOOST_CTRL_REG 0x56 > > +#define RK818_DCDC_ILMAX 0x90 > > +#define RK818_USB_CTRL_REG 0xa1 > > + > > +#define RK818_H5V_EN BIT(0) > > +#define RK818_REF_RDY_CTRL BIT(1) > > +#define RK818_USB_ILIM_SEL_MASK 0xf > > +#define RK818_USB_ILMIN_2000MA 0x7 > > +#define RK818_USB_CHG_SD_VSEL_MASK 0x70 > > + > > +/* RK808 IRQ Definitions */ > > #define RK808_IRQ_VOUT_LO 0 > > #define RK808_IRQ_VB_LO 1 > > #define RK808_IRQ_PWRON 2 > > @@ -137,6 +226,43 @@ enum rk808_reg { > > #define RK808_IRQ_PLUG_IN_INT_MSK BIT(0) > > #define RK808_IRQ_PLUG_OUT_INT_MSK BIT(1) > > > > +/* RK818 IRQ Definitions */ > > +#define RK818_IRQ_VOUT_LO 0 > > +#define RK818_IRQ_VB_LO 1 > > +#define RK818_IRQ_PWRON 2 > > +#define RK818_IRQ_PWRON_LP 3 > > +#define RK818_IRQ_HOTDIE 4 > > +#define RK818_IRQ_RTC_ALARM 5 > > +#define RK818_IRQ_RTC_PERIOD 6 > > +#define RK818_IRQ_USB_OV 7 > > +#define RK818_IRQ_PLUG_IN 8 > > +#define RK818_IRQ_PLUG_OUT 9 > > +#define RK818_IRQ_CHG_OK 10 > > +#define RK818_IRQ_CHG_TE 11 > > +#define RK818_IRQ_CHG_TS1 12 > > +#define RK818_IRQ_TS2 13 > > +#define RK818_IRQ_CHG_CVTLIM 14 > > +#define RK818_IRQ_DISCHG_ILIM 7 > > + > > +#define RK818_IRQ_VOUT_LO_MSK BIT(0) > > +#define RK818_IRQ_VB_LO_MSK BIT(1) > > +#define RK818_IRQ_PWRON_MSK BIT(2) > > +#define RK818_IRQ_PWRON_LP_MSK BIT(3) > > +#define RK818_IRQ_HOTDIE_MSK BIT(4) > > +#define RK818_IRQ_RTC_ALARM_MSK BIT(5) > > +#define RK818_IRQ_RTC_PERIOD_MSK BIT(6) > > +#define RK818_IRQ_USB_OV_MSK BIT(7) > > +#define RK818_IRQ_PLUG_IN_MSK BIT(0) > > +#define RK818_IRQ_PLUG_OUT_MSK BIT(1) > > +#define RK818_IRQ_CHG_OK_MSK BIT(2) > > +#define RK818_IRQ_CHG_TE_MSK BIT(3) > > +#define RK818_IRQ_CHG_TS1_MSK BIT(4) > > +#define RK818_IRQ_TS2_MSK BIT(5) > > +#define RK818_IRQ_CHG_CVTLIM_MSK BIT(6) > > +#define RK818_IRQ_DISCHG_ILIM_MSK BIT(7) > > + > > +#define RK818_NUM_IRQ 16 > > + > > #define RK808_VBAT_LOW_2V8 0x00 > > #define RK808_VBAT_LOW_2V9 0x01 > > #define RK808_VBAT_LOW_3V0 0x02 > > @@ -191,9 +317,27 @@ enum { > > BOOST_ILMIN_250MA, > > }; > > > > +enum { > > + RK808_ID, > > + RK818_ID, > > +}; > > + > > +struct rk8xx_reg_data { > > + int addr; > > + int mask; > > + int value; > > +}; > > + > > struct rk808 { > > - struct i2c_client *i2c; > > - struct regmap_irq_chip_data *irq_data; > > - struct regmap *regmap; > > + struct i2c_client *i2c; > > + struct regmap_irq_chip_data *irq_data; > > + struct regmap *regmap; > > + long variant; > > + int nr_cells; > > + const struct mfd_cell *cells; > > + const struct regmap_config *regmap_cfg; > > + const struct regmap_irq_chip *regmap_irq_chip; > > + const struct rk8xx_reg_data *pre_init_reg; > > + int nr_pre_init_regs; > > }; > > -#endif /* __LINUX_REGULATOR_rk808_H */ > > +#endif /* __LINUX_REGULATOR_RK808_H */ >
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index eea61e3..0a5b1c0 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -814,13 +814,13 @@ config MFD_RC5T583 different functionality of the device. config MFD_RK808 - tristate "Rockchip RK808 Power Management chip" + tristate "Rockchip RK808/RK818 Power Management chip" depends on I2C && OF select MFD_CORE select REGMAP_I2C select REGMAP_IRQ help - If you say yes here you get support for the RK808 + If you say yes here you get support for the RK808 and RK818 Power Management chips. This driver provides common support for accessing the device through I2C interface. The device supports multiple sub-devices diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c index 4b1e439..9bb7e8c 100644 --- a/drivers/mfd/rk808.c +++ b/drivers/mfd/rk808.c @@ -1,11 +1,15 @@ /* - * MFD core driver for Rockchip RK808 + * MFD core driver for Rockchip RK808/RK818 * * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd * * Author: Chris Zhong <zyw@rock-chips.com> * Author: Zhang Qing <zhangqing@rock-chips.com> * + * Copyright (C) 2016 PHYTEC Messtechnik GmbH + * + * Author: Wadim Egorov <w.egorov@phytec.de> + * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. @@ -22,12 +26,7 @@ #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/regmap.h> - -struct rk808_reg_data { - int addr; - int mask; - int value; -}; +#include <linux/of_device.h> static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) { @@ -57,6 +56,14 @@ static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) return false; } +static const struct regmap_config rk818_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RK818_USB_CTRL_REG, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = rk808_is_volatile_reg, +}; + static const struct regmap_config rk808_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -83,7 +90,17 @@ static const struct mfd_cell rk808s[] = { }, }; -static const struct rk808_reg_data pre_init_reg[] = { +static const struct mfd_cell rk818s[] = { + { .name = "rk808-clkout", }, + { .name = "rk808-regulator", }, + { + .name = "rk808-rtc", + .num_resources = ARRAY_SIZE(rtc_resources), + .resources = &rtc_resources[0], + }, +}; + +static const struct rk8xx_reg_data rk808_pre_init_reg[] = { { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, @@ -94,6 +111,22 @@ static const struct rk808_reg_data pre_init_reg[] = { VB_LO_SEL_3500MV }, }; +static const struct rk8xx_reg_data rk818_pre_init_reg[] = { + { RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK, + RK818_USB_ILMIN_2000MA }, + /* close charger when usb lower then 3.4V */ + { RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK, (0x7 << 4) }, + /* no action when vref */ + { RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL }, + /* enable HDMI 5V */ + { RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN }, + /* improve efficiency */ + { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA }, + { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA }, + { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, + { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, +}; + static const struct regmap_irq rk808_irqs[] = { /* INT_STS */ [RK808_IRQ_VOUT_LO] = { @@ -136,6 +169,76 @@ static const struct regmap_irq rk808_irqs[] = { }, }; +static const struct regmap_irq rk818_irqs[] = { + /* INT_STS */ + [RK818_IRQ_VOUT_LO] = { + .mask = RK818_IRQ_VOUT_LO_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_VB_LO] = { + .mask = RK818_IRQ_VB_LO_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_PWRON] = { + .mask = RK818_IRQ_PWRON_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_PWRON_LP] = { + .mask = RK818_IRQ_PWRON_LP_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_HOTDIE] = { + .mask = RK818_IRQ_HOTDIE_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_RTC_ALARM] = { + .mask = RK818_IRQ_RTC_ALARM_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_RTC_PERIOD] = { + .mask = RK818_IRQ_RTC_PERIOD_MSK, + .reg_offset = 0, + }, + [RK818_IRQ_USB_OV] = { + .mask = RK818_IRQ_USB_OV_MSK, + .reg_offset = 0, + }, + + /* INT_STS2 */ + [RK818_IRQ_PLUG_IN] = { + .mask = RK818_IRQ_PLUG_IN_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_PLUG_OUT] = { + .mask = RK818_IRQ_PLUG_OUT_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_CHG_OK] = { + .mask = RK818_IRQ_CHG_OK_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_CHG_TE] = { + .mask = RK818_IRQ_CHG_TE_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_CHG_TS1] = { + .mask = RK818_IRQ_CHG_TS1_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_TS2] = { + .mask = RK818_IRQ_TS2_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_CHG_CVTLIM] = { + .mask = RK818_IRQ_CHG_CVTLIM_MSK, + .reg_offset = 1, + }, + [RK818_IRQ_DISCHG_ILIM] = { + .mask = RK818_IRQ_DISCHG_ILIM_MSK, + .reg_offset = 1, + }, +}; + static struct regmap_irq_chip rk808_irq_chip = { .name = "rk808", .irqs = rk808_irqs, @@ -148,6 +251,18 @@ static struct regmap_irq_chip rk808_irq_chip = { .init_ack_masked = true, }; +static struct regmap_irq_chip rk818_irq_chip = { + .name = "rk818", + .irqs = rk818_irqs, + .num_irqs = ARRAY_SIZE(rk818_irqs), + .num_regs = 2, + .irq_reg_stride = 2, + .status_base = RK818_INT_STS_REG1, + .mask_base = RK818_INT_STS_MSK_REG1, + .ack_base = RK818_INT_STS_REG1, + .init_ack_masked = true, +}; + static struct i2c_client *rk808_i2c_client; static void rk808_device_shutdown(void) { @@ -167,6 +282,48 @@ static void rk808_device_shutdown(void) dev_err(&rk808_i2c_client->dev, "power off error!\n"); } +static const struct of_device_id rk808_of_match[] = { + { .compatible = "rockchip,rk808", .data = (void *) RK808_ID }, + { .compatible = "rockchip,rk818", .data = (void *) RK818_ID }, + { }, +}; +MODULE_DEVICE_TABLE(of, rk808_of_match); + +static int rk8xx_match_device(struct rk808 *rk808, struct device *dev) +{ + const struct of_device_id *of_id; + + of_id = of_match_device(rk808_of_match, dev); + if (!of_id) { + dev_err(dev, "Unable to match OF ID\n"); + return -ENODEV; + } + rk808->variant = (long) of_id->data; + + switch (rk808->variant) { + case RK808_ID: + rk808->nr_cells = ARRAY_SIZE(rk808s); + rk808->cells = rk808s; + rk808->regmap_cfg = &rk808_regmap_config; + rk808->regmap_irq_chip = &rk808_irq_chip; + rk808->pre_init_reg = rk808_pre_init_reg; + rk808->nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg); + break; + case RK818_ID: + rk808->nr_cells = ARRAY_SIZE(rk818s); + rk808->cells = rk818s; + rk808->regmap_cfg = &rk818_regmap_config; + rk808->regmap_irq_chip = &rk818_irq_chip; + rk808->pre_init_reg = rk818_pre_init_reg; + rk808->nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg); + break; + default: + dev_err(dev, "unsupported RK8XX ID %lu\n", rk808->variant); + return -EINVAL; + } + + return 0; +} static int rk808_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -176,45 +333,51 @@ static int rk808_probe(struct i2c_client *client, int ret; int i; - if (!client->irq) { - dev_err(&client->dev, "No interrupt support, no core IRQ\n"); - return -EINVAL; - } - rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL); if (!rk808) return -ENOMEM; - rk808->regmap = devm_regmap_init_i2c(client, &rk808_regmap_config); + ret = rk8xx_match_device(rk808, &client->dev); + if (ret) + return ret; + + rk808->i2c = client; + i2c_set_clientdata(client, rk808); + + rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg); if (IS_ERR(rk808->regmap)) { dev_err(&client->dev, "regmap initialization failed\n"); return PTR_ERR(rk808->regmap); } - for (i = 0; i < ARRAY_SIZE(pre_init_reg); i++) { - ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, - pre_init_reg[i].mask, - pre_init_reg[i].value); - if (ret) { - dev_err(&client->dev, - "0x%x write err\n", pre_init_reg[i].addr); - return ret; - } + if (!client->irq) { + dev_err(&client->dev, "No interrupt support, no core IRQ\n"); + return -EINVAL; } ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT, -1, - &rk808_irq_chip, &rk808->irq_data); + rk808->regmap_irq_chip, &rk808->irq_data); if (ret) { dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); return ret; } - rk808->i2c = client; - i2c_set_clientdata(client, rk808); + for (i = 0; i < rk808->nr_pre_init_regs; i++) { + ret = regmap_update_bits(rk808->regmap, + rk808->pre_init_reg[i].addr, + rk808->pre_init_reg[i].mask, + rk808->pre_init_reg[i].value); + if (ret) { + dev_err(&client->dev, + "0x%x write err\n", + rk808->pre_init_reg[i].addr); + return ret; + } + } - ret = mfd_add_devices(&client->dev, -1, - rk808s, ARRAY_SIZE(rk808s), + ret = mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, + rk808->cells, rk808->nr_cells, NULL, 0, regmap_irq_get_domain(rk808->irq_data)); if (ret) { dev_err(&client->dev, "failed to add MFD devices %d\n", ret); @@ -246,14 +409,9 @@ static int rk808_remove(struct i2c_client *client) return 0; } -static const struct of_device_id rk808_of_match[] = { - { .compatible = "rockchip,rk808" }, - { }, -}; -MODULE_DEVICE_TABLE(of, rk808_of_match); - static const struct i2c_device_id rk808_ids[] = { { "rk808" }, + { "rk818" }, { }, }; MODULE_DEVICE_TABLE(i2c, rk808_ids); @@ -273,4 +431,5 @@ module_i2c_driver(rk808_i2c_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>"); MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>"); -MODULE_DESCRIPTION("RK808 PMIC driver"); +MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>"); +MODULE_DESCRIPTION("RK808/RK818 PMIC driver"); diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h index 441b6ee..5ce810c 100644 --- a/include/linux/mfd/rk808.h +++ b/include/linux/mfd/rk808.h @@ -1,11 +1,15 @@ /* - * rk808.h for Rockchip RK808 + * Register definitions for Rockchip's RK808/RK818 PMIC * * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd * * Author: Chris Zhong <zyw@rock-chips.com> * Author: Zhang Qing <zhangqing@rock-chips.com> * + * Copyright (C) 2016 PHYTEC Messtechnik GmbH + * + * Author: Wadim Egorov <w.egorov@phytec.de> + * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. @@ -16,8 +20,8 @@ * more details. */ -#ifndef __LINUX_REGULATOR_rk808_H -#define __LINUX_REGULATOR_rk808_H +#ifndef __LINUX_REGULATOR_RK808_H +#define __LINUX_REGULATOR_RK808_H #include <linux/regulator/machine.h> #include <linux/regmap.h> @@ -28,7 +32,7 @@ #define RK808_DCDC1 0 /* (0+RK808_START) */ #define RK808_LDO1 4 /* (4+RK808_START) */ -#define RK808_NUM_REGULATORS 14 +#define RK808_NUM_REGULATORS 14 enum rk808_reg { RK808_ID_DCDC1, @@ -115,7 +119,92 @@ enum rk808_reg { #define RK808_INT_STS_MSK_REG2 0x4f #define RK808_IO_POL_REG 0x50 -/* IRQ Definitions */ +/* RK818 */ +#define RK818_DCDC1 0 +#define RK818_LDO1 4 +#define RK818_NUM_REGULATORS 17 + +enum rk818_reg { + RK818_ID_DCDC1, + RK818_ID_DCDC2, + RK818_ID_DCDC3, + RK818_ID_DCDC4, + RK818_ID_BOOST, + RK818_ID_LDO1, + RK818_ID_LDO2, + RK818_ID_LDO3, + RK818_ID_LDO4, + RK818_ID_LDO5, + RK818_ID_LDO6, + RK818_ID_LDO7, + RK818_ID_LDO8, + RK818_ID_LDO9, + RK818_ID_SWITCH, + RK818_ID_HDMI_SWITCH, + RK818_ID_OTG_SWITCH, +}; + +#define RK818_DCDC_EN_REG 0x23 +#define RK818_LDO_EN_REG 0x24 +#define RK818_SLEEP_SET_OFF_REG1 0x25 +#define RK818_SLEEP_SET_OFF_REG2 0x26 +#define RK818_DCDC_UV_STS_REG 0x27 +#define RK818_DCDC_UV_ACT_REG 0x28 +#define RK818_LDO_UV_STS_REG 0x29 +#define RK818_LDO_UV_ACT_REG 0x2a +#define RK818_DCDC_PG_REG 0x2b +#define RK818_LDO_PG_REG 0x2c +#define RK818_VOUT_MON_TDB_REG 0x2d +#define RK818_BUCK1_CONFIG_REG 0x2e +#define RK818_BUCK1_ON_VSEL_REG 0x2f +#define RK818_BUCK1_SLP_VSEL_REG 0x30 +#define RK818_BUCK2_CONFIG_REG 0x32 +#define RK818_BUCK2_ON_VSEL_REG 0x33 +#define RK818_BUCK2_SLP_VSEL_REG 0x34 +#define RK818_BUCK3_CONFIG_REG 0x36 +#define RK818_BUCK4_CONFIG_REG 0x37 +#define RK818_BUCK4_ON_VSEL_REG 0x38 +#define RK818_BUCK4_SLP_VSEL_REG 0x39 +#define RK818_BOOST_CONFIG_REG 0x3a +#define RK818_LDO1_ON_VSEL_REG 0x3b +#define RK818_LDO1_SLP_VSEL_REG 0x3c +#define RK818_LDO2_ON_VSEL_REG 0x3d +#define RK818_LDO2_SLP_VSEL_REG 0x3e +#define RK818_LDO3_ON_VSEL_REG 0x3f +#define RK818_LDO3_SLP_VSEL_REG 0x40 +#define RK818_LDO4_ON_VSEL_REG 0x41 +#define RK818_LDO4_SLP_VSEL_REG 0x42 +#define RK818_LDO5_ON_VSEL_REG 0x43 +#define RK818_LDO5_SLP_VSEL_REG 0x44 +#define RK818_LDO6_ON_VSEL_REG 0x45 +#define RK818_LDO6_SLP_VSEL_REG 0x46 +#define RK818_LDO7_ON_VSEL_REG 0x47 +#define RK818_LDO7_SLP_VSEL_REG 0x48 +#define RK818_LDO8_ON_VSEL_REG 0x49 +#define RK818_LDO8_SLP_VSEL_REG 0x4a +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 +#define RK818_DEVCTRL_REG 0x4b +#define RK818_INT_STS_REG1 0X4c +#define RK818_INT_STS_MSK_REG1 0x4d +#define RK818_INT_STS_REG2 0x4e +#define RK818_INT_STS_MSK_REG2 0x4f +#define RK818_IO_POL_REG 0x50 +#define RK818_H5V_EN_REG 0x52 +#define RK818_SLEEP_SET_OFF_REG3 0x53 +#define RK818_BOOST_LDO9_ON_VSEL_REG 0x54 +#define RK818_BOOST_LDO9_SLP_VSEL_REG 0x55 +#define RK818_BOOST_CTRL_REG 0x56 +#define RK818_DCDC_ILMAX 0x90 +#define RK818_USB_CTRL_REG 0xa1 + +#define RK818_H5V_EN BIT(0) +#define RK818_REF_RDY_CTRL BIT(1) +#define RK818_USB_ILIM_SEL_MASK 0xf +#define RK818_USB_ILMIN_2000MA 0x7 +#define RK818_USB_CHG_SD_VSEL_MASK 0x70 + +/* RK808 IRQ Definitions */ #define RK808_IRQ_VOUT_LO 0 #define RK808_IRQ_VB_LO 1 #define RK808_IRQ_PWRON 2 @@ -137,6 +226,43 @@ enum rk808_reg { #define RK808_IRQ_PLUG_IN_INT_MSK BIT(0) #define RK808_IRQ_PLUG_OUT_INT_MSK BIT(1) +/* RK818 IRQ Definitions */ +#define RK818_IRQ_VOUT_LO 0 +#define RK818_IRQ_VB_LO 1 +#define RK818_IRQ_PWRON 2 +#define RK818_IRQ_PWRON_LP 3 +#define RK818_IRQ_HOTDIE 4 +#define RK818_IRQ_RTC_ALARM 5 +#define RK818_IRQ_RTC_PERIOD 6 +#define RK818_IRQ_USB_OV 7 +#define RK818_IRQ_PLUG_IN 8 +#define RK818_IRQ_PLUG_OUT 9 +#define RK818_IRQ_CHG_OK 10 +#define RK818_IRQ_CHG_TE 11 +#define RK818_IRQ_CHG_TS1 12 +#define RK818_IRQ_TS2 13 +#define RK818_IRQ_CHG_CVTLIM 14 +#define RK818_IRQ_DISCHG_ILIM 7 + +#define RK818_IRQ_VOUT_LO_MSK BIT(0) +#define RK818_IRQ_VB_LO_MSK BIT(1) +#define RK818_IRQ_PWRON_MSK BIT(2) +#define RK818_IRQ_PWRON_LP_MSK BIT(3) +#define RK818_IRQ_HOTDIE_MSK BIT(4) +#define RK818_IRQ_RTC_ALARM_MSK BIT(5) +#define RK818_IRQ_RTC_PERIOD_MSK BIT(6) +#define RK818_IRQ_USB_OV_MSK BIT(7) +#define RK818_IRQ_PLUG_IN_MSK BIT(0) +#define RK818_IRQ_PLUG_OUT_MSK BIT(1) +#define RK818_IRQ_CHG_OK_MSK BIT(2) +#define RK818_IRQ_CHG_TE_MSK BIT(3) +#define RK818_IRQ_CHG_TS1_MSK BIT(4) +#define RK818_IRQ_TS2_MSK BIT(5) +#define RK818_IRQ_CHG_CVTLIM_MSK BIT(6) +#define RK818_IRQ_DISCHG_ILIM_MSK BIT(7) + +#define RK818_NUM_IRQ 16 + #define RK808_VBAT_LOW_2V8 0x00 #define RK808_VBAT_LOW_2V9 0x01 #define RK808_VBAT_LOW_3V0 0x02 @@ -191,9 +317,27 @@ enum { BOOST_ILMIN_250MA, }; +enum { + RK808_ID, + RK818_ID, +}; + +struct rk8xx_reg_data { + int addr; + int mask; + int value; +}; + struct rk808 { - struct i2c_client *i2c; - struct regmap_irq_chip_data *irq_data; - struct regmap *regmap; + struct i2c_client *i2c; + struct regmap_irq_chip_data *irq_data; + struct regmap *regmap; + long variant; + int nr_cells; + const struct mfd_cell *cells; + const struct regmap_config *regmap_cfg; + const struct regmap_irq_chip *regmap_irq_chip; + const struct rk8xx_reg_data *pre_init_reg; + int nr_pre_init_regs; }; -#endif /* __LINUX_REGULATOR_rk808_H */ +#endif /* __LINUX_REGULATOR_RK808_H */
The RK818 chip is a power management IC for multimedia and handheld devices. It contains the following components: - Regulators - RTC - Clkout - battery support Both chips RK808 and RK818 are using a similar register map. So we can reuse the RTC and Clkout functionality. Signed-off-by: Wadim Egorov <w.egorov@phytec.de> --- Changes since v3: - fixed file and module descriptions --- drivers/mfd/Kconfig | 4 +- drivers/mfd/rk808.c | 229 +++++++++++++++++++++++++++++++++++++++------- include/linux/mfd/rk808.h | 162 ++++++++++++++++++++++++++++++-- 3 files changed, 349 insertions(+), 46 deletions(-)