Re: [PATCHv6 05/11] mfd: rk808: split into core and i2c

Alexandre Belloni
2023-01-27T20:08:22Z

On 27/01/2023 19:12:38+0100, Sebastian Reichel wrote:
> Split rk808 into a core and an i2c part in preperation for
> SPI support.
>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

For the RTC part:
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

> ---
> drivers/clk/Kconfig | 2 +-
> drivers/input/misc/Kconfig | 2 +-
> drivers/mfd/Kconfig | 7 +-
> drivers/mfd/Makefile | 3 +-
> drivers/mfd/{rk808.c => rk8xx-core.c} | 209 +++++---------------------
> drivers/mfd/rk8xx-i2c.c | 200 ++++++++++++++++++++++++
> drivers/pinctrl/Kconfig | 2 +-
> drivers/power/supply/Kconfig | 2 +-
> drivers/regulator/Kconfig | 2 +-
> drivers/rtc/Kconfig | 2 +-
> include/linux/mfd/rk808.h | 6 +
> sound/soc/codecs/Kconfig | 2 +-
> 12 files changed, 256 insertions(+), 183 deletions(-)
> rename drivers/mfd/{rk808.c => rk8xx-core.c} (76%)
> create mode 100644 drivers/mfd/rk8xx-i2c.c
>
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index d79905f3e174..8448d616b9aa 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -83,7 +83,7 @@ config COMMON_CLK_MAX9485
>
> config COMMON_CLK_RK808
> tristate "Clock driver for RK805/RK808/RK809/RK817/RK818"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> help
> This driver supports RK805, RK809 and RK817, RK808 and RK818 crystal oscillator clock.
> These multi-function devices have two fixed-rate oscillators, clocked at 32KHz each.
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 5c2d0c06d2a5..6a6978fc68fa 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -598,7 +598,7 @@ config INPUT_PWM_VIBRA
>
> config INPUT_RK805_PWRKEY
> tristate "Rockchip RK805 PMIC power key support"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> help
> Select this option to enable power key driver for RK805.
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 30db49f31866..692e38283bda 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1204,12 +1204,17 @@ config MFD_RC5T583
> Additional drivers must be enabled in order to use the
> different functionality of the device.
>
> -config MFD_RK808
> +config MFD_RK8XX
> + bool
> + select MFD_CORE
> +
> +config MFD_RK8XX_I2C
> tristate "Rockchip RK805/RK808/RK809/RK817/RK818 Power Management Chip"
> depends on I2C && OF
> select MFD_CORE
> select REGMAP_I2C
> select REGMAP_IRQ
> + select MFD_RK8XX
> help
> If you say yes here you get support for the RK805, RK808, RK809,
> RK817 and RK818 Power Management chips.
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 457471478a93..f65ef1bd0810 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -220,7 +220,8 @@ obj-$(CONFIG_MFD_PALMAS) += palmas.o
> obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o
> obj-$(CONFIG_MFD_NTXEC) += ntxec.o
> obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o
> -obj-$(CONFIG_MFD_RK808) += rk808.o
> +obj-$(CONFIG_MFD_RK8XX) += rk8xx-core.o
> +obj-$(CONFIG_MFD_RK8XX_I2C) += rk8xx-i2c.o
> obj-$(CONFIG_MFD_RN5T618) += rn5t618.o
> obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o
> obj-$(CONFIG_MFD_SYSCON) += syscon.o
> diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk8xx-core.c
> similarity index 76%
> rename from drivers/mfd/rk808.c
> rename to drivers/mfd/rk8xx-core.c
> index 695a3fe6b9e0..c52f5fa1a4da 100644
> --- a/drivers/mfd/rk808.c
> +++ b/drivers/mfd/rk8xx-core.c
> @@ -1,18 +1,15 @@
> // SPDX-License-Identifier: GPL-2.0-only
> /*
> - * MFD core driver for Rockchip RK808/RK818
> + * MFD core driver for Rockchip RK8XX
> *
> * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
> + * Copyright (C) 2016 PHYTEC Messtechnik GmbH
> *
> * 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>
> */
>
> -#include <linux/i2c.h>
> #include <linux/interrupt.h>
> #include <linux/mfd/rk808.h>
> #include <linux/mfd/core.h>
> @@ -27,92 +24,6 @@ struct rk808_reg_data {
> int value;
> };
>
> -static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
> -{
> - /*
> - * Notes:
> - * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
> - * we don't use that feature. It's better to cache.
> - * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
> - * bits are cleared in case when we shutoff anyway, but better safe.
> - */
> -
> - switch (reg) {
> - case RK808_SECONDS_REG ... RK808_WEEKS_REG:
> - case RK808_RTC_STATUS_REG:
> - case RK808_VB_MON_REG:
> - case RK808_THERMAL_REG:
> - case RK808_DCDC_UV_STS_REG:
> - case RK808_LDO_UV_STS_REG:
> - case RK808_DCDC_PG_REG:
> - case RK808_LDO_PG_REG:
> - case RK808_DEVCTRL_REG:
> - case RK808_INT_STS_REG1:
> - case RK808_INT_STS_REG2:
> - return true;
> - }
> -
> - return false;
> -}
> -
> -static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
> -{
> - /*
> - * Notes:
> - * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
> - * we don't use that feature. It's better to cache.
> - */
> -
> - switch (reg) {
> - case RK817_SECONDS_REG ... RK817_WEEKS_REG:
> - case RK817_RTC_STATUS_REG:
> - case RK817_CODEC_DTOP_LPT_SRST:
> - case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0:
> - case RK817_PMIC_CHRG_STS:
> - case RK817_PMIC_CHRG_OUT:
> - case RK817_PMIC_CHRG_IN:
> - case RK817_INT_STS_REG0:
> - case RK817_INT_STS_REG1:
> - case RK817_INT_STS_REG2:
> - case RK817_SYS_STS:
> - return true;
> - }
> -
> - 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 rk805_regmap_config = {
> - .reg_bits = 8,
> - .val_bits = 8,
> - .max_register = RK805_OFF_SOURCE_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,
> - .max_register = RK808_IO_POL_REG,
> - .cache_type = REGCACHE_RBTREE,
> - .volatile_reg = rk808_is_volatile_reg,
> -};
> -
> -static const struct regmap_config rk817_regmap_config = {
> - .reg_bits = 8,
> - .val_bits = 8,
> - .max_register = RK817_GPIO_INT_CFG,
> - .cache_type = REGCACHE_NONE,
> - .volatile_reg = rk817_is_volatile_reg,
> -};
> -
> static const struct resource rtc_resources[] = {
> DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
> };
> @@ -604,9 +515,9 @@ static int rk808_restart(struct sys_off_data *data)
> return NOTIFY_DONE;
> }
>
> -static void rk8xx_shutdown(struct i2c_client *client)
> +void rk8xx_shutdown(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(client);
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret;
>
> switch (rk808->variant) {
> @@ -627,61 +538,31 @@ static void rk8xx_shutdown(struct i2c_client *client)
> return;
> }
> if (ret)
> - dev_warn(&client->dev,
> + dev_warn(dev,
> "Cannot switch to power down function\n");
> }
> +EXPORT_SYMBOL_GPL(rk8xx_shutdown);
>
> -static const struct of_device_id rk808_of_match[] = {
> - { .compatible = "rockchip,rk805" },
> - { .compatible = "rockchip,rk808" },
> - { .compatible = "rockchip,rk809" },
> - { .compatible = "rockchip,rk817" },
> - { .compatible = "rockchip,rk818" },
> - { },
> -};
> -MODULE_DEVICE_TABLE(of, rk808_of_match);
> -
> -static int rk808_probe(struct i2c_client *client)
> +int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap)
> {
> - struct device_node *np = client->dev.of_node;
> struct rk808 *rk808;
> const struct rk808_reg_data *pre_init_reg;
> const struct mfd_cell *cells;
> int nr_pre_init_regs;
> int nr_cells;
> - int msb, lsb;
> - unsigned char pmic_id_msb, pmic_id_lsb;
> int ret;
> int i;
>
> - rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
> + rk808 = devm_kzalloc(dev, sizeof(*rk808), GFP_KERNEL);
> if (!rk808)
> return -ENOMEM;
> -
> - if (of_device_is_compatible(np, "rockchip,rk817") ||
> - of_device_is_compatible(np, "rockchip,rk809")) {
> - pmic_id_msb = RK817_ID_MSB;
> - pmic_id_lsb = RK817_ID_LSB;
> - } else {
> - pmic_id_msb = RK808_ID_MSB;
> - pmic_id_lsb = RK808_ID_LSB;
> - }
> -
> - /* Read chip variant */
> - msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
> - if (msb < 0)
> - return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
> -
> - lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
> - if (lsb < 0)
> - return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
> -
> - rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
> - dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
> + rk808->dev = dev;
> + rk808->variant = variant;
> + rk808->regmap = regmap;
> + dev_set_drvdata(dev, rk808);
>
> switch (rk808->variant) {
> case RK805_ID:
> - rk808->regmap_cfg = &rk805_regmap_config;
> rk808->regmap_irq_chip = &rk805_irq_chip;
> pre_init_reg = rk805_pre_init_reg;
> nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
> @@ -689,7 +570,6 @@ static int rk808_probe(struct i2c_client *client)
> nr_cells = ARRAY_SIZE(rk805s);
> break;
> case RK808_ID:
> - rk808->regmap_cfg = &rk808_regmap_config;
> rk808->regmap_irq_chip = &rk808_irq_chip;
> pre_init_reg = rk808_pre_init_reg;
> nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
> @@ -697,7 +577,6 @@ static int rk808_probe(struct i2c_client *client)
> nr_cells = ARRAY_SIZE(rk808s);
> break;
> case RK818_ID:
> - rk808->regmap_cfg = &rk818_regmap_config;
> rk808->regmap_irq_chip = &rk818_irq_chip;
> pre_init_reg = rk818_pre_init_reg;
> nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
> @@ -706,7 +585,6 @@ static int rk808_probe(struct i2c_client *client)
> break;
> case RK809_ID:
> case RK817_ID:
> - rk808->regmap_cfg = &rk817_regmap_config;
> rk808->regmap_irq_chip = &rk817_irq_chip;
> pre_init_reg = rk817_pre_init_reg;
> nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
> @@ -714,27 +592,20 @@ static int rk808_probe(struct i2c_client *client)
> nr_cells = ARRAY_SIZE(rk817s);
> break;
> default:
> - dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
> - rk808->variant);
> + dev_err(dev, "Unsupported RK8XX ID %lu\n", rk808->variant);
> return -EINVAL;
> }
>
> - rk808->dev = &client->dev;
> - i2c_set_clientdata(client, rk808);
> -
> - rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
> - if (IS_ERR(rk808->regmap))
> - return dev_err_probe(&client->dev, PTR_ERR(rk808->regmap),
> - "regmap initialization failed\n");
> + dev_info(dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
>
> - if (!client->irq)
> - return dev_err_probe(&client->dev, -EINVAL, "No interrupt support, no core IRQ\n");
> + if (!irq)
> + return dev_err_probe(dev, -EINVAL, "No interrupt support, no core IRQ\n");
>
> - ret = devm_regmap_add_irq_chip(&client->dev, rk808->regmap, client->irq,
> + ret = devm_regmap_add_irq_chip(dev, rk808->regmap, irq,
> IRQF_ONESHOT, -1,
> rk808->regmap_irq_chip, &rk808->irq_data);
> if (ret)
> - return dev_err_probe(&client->dev, ret, "Failed to add irq_chip\n");
> + return dev_err_probe(dev, ret, "Failed to add irq_chip\n");
>
> for (i = 0; i < nr_pre_init_regs; i++) {
> ret = regmap_update_bits(rk808->regmap,
> @@ -742,45 +613,46 @@ static int rk808_probe(struct i2c_client *client)
> pre_init_reg[i].mask,
> pre_init_reg[i].value);
> if (ret)
> - return dev_err_probe(&client->dev, ret, "0x%x write err\n",
> + return dev_err_probe(dev, ret, "0x%x write err\n",
> pre_init_reg[i].addr);
> }
>
> - ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
> + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
> cells, nr_cells, NULL, 0,
> regmap_irq_get_domain(rk808->irq_data));
> if (ret)
> - return dev_err_probe(&client->dev, ret, "failed to add MFD devices\n");
> + return dev_err_probe(dev, ret, "failed to add MFD devices\n");
>
> - if (of_property_read_bool(np, "rockchip,system-power-controller")) {
> - ret = devm_register_sys_off_handler(&client->dev,
> + if (device_property_read_bool(dev, "rockchip,system-power-controller")) {
> + ret = devm_register_sys_off_handler(dev,
> SYS_OFF_MODE_POWER_OFF_PREPARE, SYS_OFF_PRIO_HIGH,
> &rk808_power_off, rk808);
> if (ret)
> - return dev_err_probe(&client->dev, ret,
> + return dev_err_probe(dev, ret,
> "failed to register poweroff handler\n");
>
> switch (rk808->variant) {
> case RK809_ID:
> case RK817_ID:
> - ret = devm_register_sys_off_handler(&client->dev,
> + ret = devm_register_sys_off_handler(dev,
> SYS_OFF_MODE_RESTART, SYS_OFF_PRIO_HIGH,
> &rk808_restart, rk808);
> if (ret)
> - dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
> + dev_warn(dev, "failed to register rst handler, %d\n", ret);
> break;
> default:
> - dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
> + dev_dbg(dev, "pmic controlled board reset not supported\n");
> break;
> }
> }
>
> return 0;
> }
> +EXPORT_SYMBOL_GPL(rk8xx_probe);
>
> -static int __maybe_unused rk8xx_suspend(struct device *dev)
> +int rk8xx_suspend(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret = 0;
>
> switch (rk808->variant) {
> @@ -803,10 +675,11 @@ static int __maybe_unused rk8xx_suspend(struct device *dev)
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(rk8xx_suspend);
>
> -static int __maybe_unused rk8xx_resume(struct device *dev)
> +int rk8xx_resume(struct device *dev)
> {
> - struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
> + struct rk808 *rk808 = dev_get_drvdata(dev);
> int ret = 0;
>
> switch (rk808->variant) {
> @@ -823,22 +696,10 @@ static int __maybe_unused rk8xx_resume(struct device *dev)
>
> return ret;
> }
> -static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
> -
> -static struct i2c_driver rk808_i2c_driver = {
> - .driver = {
> - .name = "rk808",
> - .of_match_table = rk808_of_match,
> - .pm = &rk8xx_pm_ops,
> - },
> - .probe_new = rk808_probe,
> - .shutdown = rk8xx_shutdown,
> -};
> -
> -module_i2c_driver(rk808_i2c_driver);
> +EXPORT_SYMBOL_GPL(rk8xx_resume);
>
> MODULE_LICENSE("GPL");
> MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
> MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
> MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
> -MODULE_DESCRIPTION("RK808/RK818 PMIC driver");
> +MODULE_DESCRIPTION("RK8xx PMIC core");
> diff --git a/drivers/mfd/rk8xx-i2c.c b/drivers/mfd/rk8xx-i2c.c
> new file mode 100644
> index 000000000000..6d121b589fec
> --- /dev/null
> +++ b/drivers/mfd/rk8xx-i2c.c
> @@ -0,0 +1,200 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Rockchip RK808/RK818 Core (I2C) driver
> + *
> + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
> + * Copyright (C) 2016 PHYTEC Messtechnik GmbH
> + *
> + * Author: Chris Zhong <zyw@rock-chips.com>
> + * Author: Zhang Qing <zhangqing@rock-chips.com>
> + * Author: Wadim Egorov <w.egorov@phytec.de>
> + */
> +
> +#include <linux/i2c.h>
> +#include <linux/mfd/rk808.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/regmap.h>
> +
> +static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
> +{
> + /*
> + * Notes:
> + * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
> + * we don't use that feature. It's better to cache.
> + * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
> + * bits are cleared in case when we shutoff anyway, but better safe.
> + */
> +
> + switch (reg) {
> + case RK808_SECONDS_REG ... RK808_WEEKS_REG:
> + case RK808_RTC_STATUS_REG:
> + case RK808_VB_MON_REG:
> + case RK808_THERMAL_REG:
> + case RK808_DCDC_UV_STS_REG:
> + case RK808_LDO_UV_STS_REG:
> + case RK808_DCDC_PG_REG:
> + case RK808_LDO_PG_REG:
> + case RK808_DEVCTRL_REG:
> + case RK808_INT_STS_REG1:
> + case RK808_INT_STS_REG2:
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
> +{
> + /*
> + * Notes:
> + * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
> + * we don't use that feature. It's better to cache.
> + */
> +
> + switch (reg) {
> + case RK817_SECONDS_REG ... RK817_WEEKS_REG:
> + case RK817_RTC_STATUS_REG:
> + case RK817_CODEC_DTOP_LPT_SRST:
> + case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0:
> + case RK817_PMIC_CHRG_STS:
> + case RK817_PMIC_CHRG_OUT:
> + case RK817_PMIC_CHRG_IN:
> + case RK817_INT_STS_REG0:
> + case RK817_INT_STS_REG1:
> + case RK817_INT_STS_REG2:
> + case RK817_SYS_STS:
> + return true;
> + }
> +
> + 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 rk805_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = RK805_OFF_SOURCE_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,
> + .max_register = RK808_IO_POL_REG,
> + .cache_type = REGCACHE_RBTREE,
> + .volatile_reg = rk808_is_volatile_reg,
> +};
> +
> +static const struct regmap_config rk817_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = RK817_GPIO_INT_CFG,
> + .cache_type = REGCACHE_NONE,
> + .volatile_reg = rk817_is_volatile_reg,
> +};
> +
> +static int rk8xx_i2c_get_variant(struct i2c_client *client)
> +{
> + u8 pmic_id_msb, pmic_id_lsb;
> + int msb, lsb;
> +
> + if (of_device_is_compatible(client->dev.of_node, "rockchip,rk817") ||
> + of_device_is_compatible(client->dev.of_node, "rockchip,rk809")) {
> + pmic_id_msb = RK817_ID_MSB;
> + pmic_id_lsb = RK817_ID_LSB;
> + } else {
> + pmic_id_msb = RK808_ID_MSB;
> + pmic_id_lsb = RK808_ID_LSB;
> + }
> +
> + /* Read chip variant */
> + msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
> + if (msb < 0)
> + return dev_err_probe(&client->dev, msb, "failed to read the chip id MSB\n");
> +
> + lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
> + if (lsb < 0)
> + return dev_err_probe(&client->dev, lsb, "failed to read the chip id LSB\n");
> +
> + return ((msb << 8) | lsb) & RK8XX_ID_MSK;
> +}
> +
> +static int rk8xx_i2c_probe(struct i2c_client *client)
> +{
> + const struct regmap_config *regmap_cfg;
> + struct regmap *regmap;
> + int variant;
> +
> + variant = rk8xx_i2c_get_variant(client);
> + if (variant < 0)
> + return variant;
> +
> + switch (variant) {
> + case RK805_ID:
> + regmap_cfg = &rk805_regmap_config;
> + break;
> + case RK808_ID:
> + regmap_cfg = &rk808_regmap_config;
> + break;
> + case RK818_ID:
> + regmap_cfg = &rk818_regmap_config;
> + break;
> + case RK809_ID:
> + case RK817_ID:
> + regmap_cfg = &rk817_regmap_config;
> + break;
> + default:
> + return dev_err_probe(&client->dev, -EINVAL, "Unsupported RK8XX ID %x\n", variant);
> + }
> +
> + regmap = devm_regmap_init_i2c(client, regmap_cfg);
> + if (IS_ERR(regmap))
> + return dev_err_probe(&client->dev, PTR_ERR(regmap),
> + "regmap initialization failed\n");
> +
> + return rk8xx_probe(&client->dev, variant, client->irq, regmap);
> +}
> +
> +static void rk8xx_i2c_shutdown(struct i2c_client *client)
> +{
> + rk8xx_shutdown(&client->dev);
> +}
> +
> +static SIMPLE_DEV_PM_OPS(rk8xx_i2c_pm_ops, rk8xx_suspend, rk8xx_resume);
> +
> +static const struct of_device_id rk8xx_i2c_of_match[] = {
> + { .compatible = "rockchip,rk805" },
> + { .compatible = "rockchip,rk808" },
> + { .compatible = "rockchip,rk809" },
> + { .compatible = "rockchip,rk817" },
> + { .compatible = "rockchip,rk818" },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, rk8xx_i2c_of_match);
> +
> +static struct i2c_driver rk8xx_i2c_driver = {
> + .driver = {
> + .name = "rk8xx-i2c",
> + .of_match_table = rk8xx_i2c_of_match,
> + .pm = &rk8xx_i2c_pm_ops,
> + },
> + .probe_new = rk8xx_i2c_probe,
> + .shutdown = rk8xx_i2c_shutdown,
> +};
> +module_i2c_driver(rk8xx_i2c_driver);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
> +MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
> +MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
> +MODULE_DESCRIPTION("RK8xx I2C PMIC driver");
> diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
> index 7d5f5458c72e..b3cbce49a087 100644
> --- a/drivers/pinctrl/Kconfig
> +++ b/drivers/pinctrl/Kconfig
> @@ -407,7 +407,7 @@ config PINCTRL_PISTACHIO
>
> config PINCTRL_RK805
> tristate "Pinctrl and GPIO driver for RK805 PMIC"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> select GPIOLIB
> select PINMUX
> select GENERIC_PINCONF
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index 0bbfe6a7ce4d..306a9b1f897e 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -725,7 +725,7 @@ config CHARGER_BQ256XX
>
> config CHARGER_RK817
> tristate "Rockchip RK817 PMIC Battery Charger"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> help
> Say Y to include support for Rockchip RK817 Battery Charger.
>
> diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
> index 820c9a0788e5..90e79ec5b021 100644
> --- a/drivers/regulator/Kconfig
> +++ b/drivers/regulator/Kconfig
> @@ -1048,7 +1048,7 @@ config REGULATOR_RC5T583
>
> config REGULATOR_RK808
> tristate "Rockchip RK805/RK808/RK809/RK817/RK818 Power regulators"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> help
> Select this option to enable the power regulator of ROCKCHIP
> PMIC RK805,RK809&RK817,RK808 and RK818.
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 677d2601d305..313c14c4cb2d 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -395,7 +395,7 @@ config RTC_DRV_NCT3018Y
>
> config RTC_DRV_RK808
> tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC"
> - depends on MFD_RK808
> + depends on MFD_RK8XX
> help
> If you say yes here you will get support for the
> RTC of RK805, RK809 and RK817, RK808 and RK818 PMIC.
> diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
> index a89ddd9ba68e..4183427a80fe 100644
> --- a/include/linux/mfd/rk808.h
> +++ b/include/linux/mfd/rk808.h
> @@ -794,4 +794,10 @@ struct rk808 {
> const struct regmap_config *regmap_cfg;
> const struct regmap_irq_chip *regmap_irq_chip;
> };
> +
> +void rk8xx_shutdown(struct device *dev);
> +int rk8xx_probe(struct device *dev, int variant, unsigned int irq, struct regmap *regmap);
> +int rk8xx_suspend(struct device *dev);
> +int rk8xx_resume(struct device *dev);
> +
> #endif /* __LINUX_REGULATOR_RK808_H */
> diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
> index 0f9d71490075..7df9bb2c458f 100644
> --- a/sound/soc/codecs/Kconfig
> +++ b/sound/soc/codecs/Kconfig
> @@ -1211,7 +1211,7 @@ config SND_SOC_RK3328
>
> config SND_SOC_RK817
> tristate "Rockchip RK817 audio CODEC"
> - depends on MFD_RK808 || COMPILE_TEST
> + depends on MFD_RK8XX || COMPILE_TEST
>
> config SND_SOC_RL6231
> tristate
> --
> 2.39.0
>

--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering