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The ArmSoM Sige 5 board connects the rk806 PMIC on an i2c bus. Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Link: https://lore.kernel.org/r/20240802134736.283851-1-detlev.casanova@collabora.com Signed-off-by: Lee Jones <lee@kernel.org>
254 lines
6.4 KiB
C
254 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Rockchip RK805/RK808/RK816/RK817/RK818 Core (I2C) driver
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*
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* Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
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* Copyright (C) 2016 PHYTEC Messtechnik GmbH
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*
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* Author: Chris Zhong <zyw@rock-chips.com>
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* Author: Zhang Qing <zhangqing@rock-chips.com>
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* Author: Wadim Egorov <w.egorov@phytec.de>
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*/
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#include <linux/i2c.h>
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#include <linux/mfd/rk808.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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struct rk8xx_i2c_platform_data {
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const struct regmap_config *regmap_cfg;
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int variant;
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};
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static bool rk806_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case RK806_POWER_EN0 ... RK806_POWER_EN5:
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case RK806_DVS_START_CTRL ... RK806_INT_MSK1:
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return true;
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}
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return false;
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}
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static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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/*
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* Notes:
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* - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
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* we don't use that feature. It's better to cache.
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* - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
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* bits are cleared in case when we shutoff anyway, but better safe.
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*/
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switch (reg) {
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case RK808_SECONDS_REG ... RK808_WEEKS_REG:
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case RK808_RTC_STATUS_REG:
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case RK808_VB_MON_REG:
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case RK808_THERMAL_REG:
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case RK808_DCDC_UV_STS_REG:
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case RK808_LDO_UV_STS_REG:
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case RK808_DCDC_PG_REG:
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case RK808_LDO_PG_REG:
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case RK808_DEVCTRL_REG:
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case RK808_INT_STS_REG1:
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case RK808_INT_STS_REG2:
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return true;
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}
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return false;
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}
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static bool rk816_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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/*
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* Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
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* we don't use that feature. It's better to cache.
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*/
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switch (reg) {
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case RK808_SECONDS_REG ... RK808_WEEKS_REG:
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case RK808_RTC_STATUS_REG:
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case RK808_VB_MON_REG:
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case RK808_THERMAL_REG:
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case RK816_DCDC_EN_REG1:
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case RK816_DCDC_EN_REG2:
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case RK816_INT_STS_REG1:
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case RK816_INT_STS_REG2:
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case RK816_INT_STS_REG3:
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case RK808_DEVCTRL_REG:
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case RK816_SUP_STS_REG:
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case RK816_GGSTS_REG:
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case RK816_ZERO_CUR_ADC_REGH:
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case RK816_ZERO_CUR_ADC_REGL:
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case RK816_GASCNT_REG(0) ... RK816_BAT_VOL_REGL:
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return true;
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}
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return false;
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}
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static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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/*
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* Notes:
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* - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
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* we don't use that feature. It's better to cache.
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*/
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switch (reg) {
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case RK817_SECONDS_REG ... RK817_WEEKS_REG:
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case RK817_RTC_STATUS_REG:
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case RK817_CODEC_DTOP_LPT_SRST:
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case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0:
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case RK817_PMIC_CHRG_STS:
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case RK817_PMIC_CHRG_OUT:
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case RK817_PMIC_CHRG_IN:
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case RK817_INT_STS_REG0:
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case RK817_INT_STS_REG1:
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case RK817_INT_STS_REG2:
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case RK817_SYS_STS:
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return true;
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}
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return false;
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}
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static const struct regmap_config rk818_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK818_USB_CTRL_REG,
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.cache_type = REGCACHE_MAPLE,
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.volatile_reg = rk808_is_volatile_reg,
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};
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static const struct regmap_config rk805_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK805_OFF_SOURCE_REG,
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.cache_type = REGCACHE_MAPLE,
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.volatile_reg = rk808_is_volatile_reg,
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};
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static const struct regmap_config rk806_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK806_BUCK_RSERVE_REG5,
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.cache_type = REGCACHE_MAPLE,
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.volatile_reg = rk806_is_volatile_reg,
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};
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static const struct regmap_config rk808_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK808_IO_POL_REG,
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.cache_type = REGCACHE_MAPLE,
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.volatile_reg = rk808_is_volatile_reg,
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};
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static const struct regmap_config rk816_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK816_DATA_REG(18),
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.cache_type = REGCACHE_MAPLE,
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.volatile_reg = rk816_is_volatile_reg,
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};
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static const struct regmap_config rk817_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = RK817_GPIO_INT_CFG,
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.cache_type = REGCACHE_NONE,
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.volatile_reg = rk817_is_volatile_reg,
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};
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static const struct rk8xx_i2c_platform_data rk805_data = {
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.regmap_cfg = &rk805_regmap_config,
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.variant = RK805_ID,
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};
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static const struct rk8xx_i2c_platform_data rk806_data = {
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.regmap_cfg = &rk806_regmap_config,
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.variant = RK806_ID,
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};
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static const struct rk8xx_i2c_platform_data rk808_data = {
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.regmap_cfg = &rk808_regmap_config,
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.variant = RK808_ID,
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};
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static const struct rk8xx_i2c_platform_data rk809_data = {
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.regmap_cfg = &rk817_regmap_config,
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.variant = RK809_ID,
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};
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static const struct rk8xx_i2c_platform_data rk816_data = {
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.regmap_cfg = &rk816_regmap_config,
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.variant = RK816_ID,
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};
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static const struct rk8xx_i2c_platform_data rk817_data = {
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.regmap_cfg = &rk817_regmap_config,
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.variant = RK817_ID,
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};
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static const struct rk8xx_i2c_platform_data rk818_data = {
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.regmap_cfg = &rk818_regmap_config,
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.variant = RK818_ID,
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};
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static int rk8xx_i2c_probe(struct i2c_client *client)
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{
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const struct rk8xx_i2c_platform_data *data;
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struct regmap *regmap;
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data = device_get_match_data(&client->dev);
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if (!data)
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return -ENODEV;
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regmap = devm_regmap_init_i2c(client, data->regmap_cfg);
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if (IS_ERR(regmap))
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return dev_err_probe(&client->dev, PTR_ERR(regmap),
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"regmap initialization failed\n");
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return rk8xx_probe(&client->dev, data->variant, client->irq, regmap);
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}
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static void rk8xx_i2c_shutdown(struct i2c_client *client)
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{
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rk8xx_shutdown(&client->dev);
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}
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static SIMPLE_DEV_PM_OPS(rk8xx_i2c_pm_ops, rk8xx_suspend, rk8xx_resume);
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static const struct of_device_id rk8xx_i2c_of_match[] = {
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{ .compatible = "rockchip,rk805", .data = &rk805_data },
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{ .compatible = "rockchip,rk806", .data = &rk806_data },
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{ .compatible = "rockchip,rk808", .data = &rk808_data },
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{ .compatible = "rockchip,rk809", .data = &rk809_data },
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{ .compatible = "rockchip,rk816", .data = &rk816_data },
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{ .compatible = "rockchip,rk817", .data = &rk817_data },
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{ .compatible = "rockchip,rk818", .data = &rk818_data },
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{ },
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};
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MODULE_DEVICE_TABLE(of, rk8xx_i2c_of_match);
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static struct i2c_driver rk8xx_i2c_driver = {
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.driver = {
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.name = "rk8xx-i2c",
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.of_match_table = rk8xx_i2c_of_match,
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.pm = &rk8xx_i2c_pm_ops,
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},
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.probe = rk8xx_i2c_probe,
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.shutdown = rk8xx_i2c_shutdown,
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};
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module_i2c_driver(rk8xx_i2c_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
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MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
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MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
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MODULE_DESCRIPTION("RK8xx I2C PMIC driver");
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