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Message-ID: <YzRWoalictTKLAye@google.com>
Date: Wed, 28 Sep 2022 15:13:53 +0100
From: Lee Jones <lee@...nel.org>
To: Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Mark Brown <broonie@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Alessandro Zummo <a.zummo@...ertech.it>,
linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCHv3 07/14] mfd: rk808: split into core and i2c
On Fri, 09 Sep 2022, Sebastian Reichel wrote:
> Split rk808 into a core and an i2c part in preperation for
> SPI support.
>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> ---
> drivers/mfd/Kconfig | 5 +
> drivers/mfd/Makefile | 3 +-
> drivers/mfd/{rk808.c => rk8xx-core.c} | 200 +++++--------------------
> drivers/mfd/rk8xx-i2c.c | 203 ++++++++++++++++++++++++++
> include/linux/mfd/rk808.h | 6 +
> 5 files changed, 249 insertions(+), 168 deletions(-)
> rename drivers/mfd/{rk808.c => rk8xx-core.c} (76%)
> create mode 100644 drivers/mfd/rk8xx-i2c.c
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index abb58ab1a1a4..acb7133d6db6 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1143,11 +1143,16 @@ config MFD_RC5T583
> different functionality of the device.
>
> config MFD_RK808
> + 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_RK808
> 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 858cacf659d6..25ac617a5e6b 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -215,7 +215,8 @@ 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_RK808) += 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 518c6deec4b1..d0ce17d98fdc 100644
> --- a/drivers/mfd/rk808.c
> +++ b/drivers/mfd/rk8xx-core.c
> @@ -12,7 +12,6 @@
> * Author: Wadim Egorov <w.egorov@...tec.de>
> */
>
> -#include <linux/i2c.h>
> #include <linux/interrupt.h>
> #include <linux/mfd/rk808.h>
> #include <linux/mfd/core.h>
> @@ -27,88 +26,6 @@ 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_INT_STS_REG0:
> - case RK817_INT_STS_REG1:
> - case RK817_INT_STS_REG2:
> - case RK817_SYS_STS:
> - return true;
> - }
> -
> - return true;
> -}
> -
> -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),
> };
> @@ -584,9 +501,9 @@ 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) {
> @@ -607,62 +524,31 @@ 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,
> - const struct i2c_device_id *id)
> +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);
> @@ -670,7 +556,6 @@ 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);
> @@ -678,7 +563,6 @@ 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);
> @@ -687,7 +571,6 @@ 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);
> @@ -695,27 +578,20 @@ 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);
> + dev_info(dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
>
> - 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");
> + if (!irq)
> + return dev_err_probe(dev, -EINVAL, "No interrupt support, no core IRQ\n");
>
> - if (!client->irq)
> - return dev_err_probe(&client->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,
> @@ -723,45 +599,46 @@ 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) {
> @@ -784,10 +661,11 @@ 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) {
> @@ -804,22 +682,10 @@ 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 = rk808_probe,
> - .shutdown = rk8xx_shutdown,
> -};
> -
> -module_i2c_driver(rk808_i2c_driver);
> +EXPORT_SYMBOL_GPL(rk8xx_resume);
>
> MODULE_LICENSE("GPL");
> MODULE_AUTHOR("Chris Zhong <zyw@...k-chips.com>");
> MODULE_AUTHOR("Zhang Qing <zhangqing@...k-chips.com>");
> MODULE_AUTHOR("Wadim Egorov <w.egorov@...tec.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..325d0e519325
> --- /dev/null
> +++ b/drivers/mfd/rk8xx-i2c.c
> @@ -0,0 +1,203 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * MFD i2c driver for Rockchip RK808/RK818
Please drop the "MFD" here, so:
Rockchip RK808/RK818 Core (I2C) driver
> + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
> + *
> + * Author: Chris Zhong <zyw@...k-chips.com>
> + * Author: Zhang Qing <zhangqing@...k-chips.com>
> + *
> + * Copyright (C) 2016 PHYTEC Messtechnik GmbH
> + *
> + * Author: Wadim Egorov <w.egorov@...tec.de>
> + */
This is a new file, right? So this might need updating.
> +#include <linux/i2c.h>
> +#include <linux/mfd/rk808.h>
You're missing includes here.
> +static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
#include <linux/device.h>
> +{
> + /*
> + * 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_INT_STS_REG0:
> + case RK817_INT_STS_REG1:
> + case RK817_INT_STS_REG2:
> + case RK817_SYS_STS:
> + return true;
> + }
> +
> + return true;
> +}
> +
> +static const struct regmap_config rk818_regmap_config = {
#include <linux/regmap.h> etc - please look for others.
> + .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 int __maybe_unused rk8xx_i2c_suspend(struct device *dev)
> +{
> + return rk8xx_suspend(dev);
> +}
> +
> +static int __maybe_unused rk8xx_i2c_resume(struct device *dev)
> +{
> + return rk8xx_resume(dev);
> +}
> +static SIMPLE_DEV_PM_OPS(rk8xx_i2c_pm_ops, rk8xx_i2c_suspend, rk8xx_i2c_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@...k-chips.com>");
> +MODULE_AUTHOR("Zhang Qing <zhangqing@...k-chips.com>");
> +MODULE_AUTHOR("Wadim Egorov <w.egorov@...tec.de>");
Not mentioned in the header?
> +MODULE_DESCRIPTION("RK8xx I2C PMIC driver");
> diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
> index 9937b068fa82..c5ddfb0e5353 100644
> --- a/include/linux/mfd/rk808.h
> +++ b/include/linux/mfd/rk808.h
> @@ -703,4 +703,10 @@ 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 */
--
Lee Jones [李琼斯]
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