| /* |
| * Regulator 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. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| #include <linux/i2c.h> |
| #include <linux/module.h> |
| #include <linux/of_device.h> |
| #include <linux/of_gpio.h> |
| #include <linux/mfd/rk808.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/gpio/consumer.h> |
| |
| /* Field Definitions */ |
| #define RK808_BUCK_VSEL_MASK 0x3f |
| #define RK808_BUCK4_VSEL_MASK 0xf |
| #define RK808_LDO_VSEL_MASK 0x1f |
| |
| #define RK818_BUCK_VSEL_MASK 0x3f |
| #define RK818_BUCK4_VSEL_MASK 0x1f |
| #define RK818_LDO_VSEL_MASK 0x1f |
| #define RK818_LDO3_ON_VSEL_MASK 0xf |
| #define RK818_BOOST_ON_VSEL_MASK 0xe0 |
| |
| /* Ramp rate definitions for buck1 / buck2 only */ |
| #define RK808_RAMP_RATE_OFFSET 3 |
| #define RK808_RAMP_RATE_MASK (3 << RK808_RAMP_RATE_OFFSET) |
| #define RK808_RAMP_RATE_2MV_PER_US (0 << RK808_RAMP_RATE_OFFSET) |
| #define RK808_RAMP_RATE_4MV_PER_US (1 << RK808_RAMP_RATE_OFFSET) |
| #define RK808_RAMP_RATE_6MV_PER_US (2 << RK808_RAMP_RATE_OFFSET) |
| #define RK808_RAMP_RATE_10MV_PER_US (3 << RK808_RAMP_RATE_OFFSET) |
| |
| #define RK808_DVS2_POL BIT(2) |
| #define RK808_DVS1_POL BIT(1) |
| |
| /* Offset from XXX_ON_VSEL to XXX_SLP_VSEL */ |
| #define RK808_SLP_REG_OFFSET 1 |
| |
| /* Offset from XXX_ON_VSEL to XXX_DVS_VSEL */ |
| #define RK808_DVS_REG_OFFSET 2 |
| |
| /* Offset from XXX_EN_REG to SLEEP_SET_OFF_XXX */ |
| #define RK808_SLP_SET_OFF_REG_OFFSET 2 |
| |
| /* max steps for increase voltage of Buck1/2, equal 100mv*/ |
| #define MAX_STEPS_ONE_TIME 8 |
| |
| #define RK8XX_DESC(_id, _match, _supply, _min, _max, _step, _vreg, \ |
| _vmask, _ereg, _emask, _etime) \ |
| [_id] = { \ |
| .name = (_match), \ |
| .supply_name = (_supply), \ |
| .of_match = of_match_ptr(_match), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = (_id), \ |
| .n_voltages = (((_max) - (_min)) / (_step) + 1), \ |
| .owner = THIS_MODULE, \ |
| .min_uV = (_min) * 1000, \ |
| .uV_step = (_step) * 1000, \ |
| .vsel_reg = (_vreg), \ |
| .vsel_mask = (_vmask), \ |
| .enable_reg = (_ereg), \ |
| .enable_mask = (_emask), \ |
| .enable_time = (_etime), \ |
| .ops = &rk808_reg_ops, \ |
| } |
| |
| #define RK8XX_DESC_SWITCH(_id, _match, _supply, _ereg, _emask) \ |
| [_id] = { \ |
| .name = (_match), \ |
| .supply_name = (_supply), \ |
| .of_match = of_match_ptr(_match), \ |
| .regulators_node = of_match_ptr("regulators"), \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = (_id), \ |
| .enable_reg = (_ereg), \ |
| .enable_mask = (_emask), \ |
| .owner = THIS_MODULE, \ |
| .ops = &rk808_switch_ops \ |
| } |
| |
| |
| struct rk808_regulator_data { |
| struct gpio_desc *dvs_gpio[2]; |
| }; |
| |
| static const int rk808_buck_config_regs[] = { |
| RK808_BUCK1_CONFIG_REG, |
| RK808_BUCK2_CONFIG_REG, |
| RK808_BUCK3_CONFIG_REG, |
| RK808_BUCK4_CONFIG_REG, |
| }; |
| |
| static const struct regulator_linear_range rk808_ldo3_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(800000, 0, 13, 100000), |
| REGULATOR_LINEAR_RANGE(2500000, 15, 15, 0), |
| }; |
| |
| static int rk808_buck1_2_get_voltage_sel_regmap(struct regulator_dev *rdev) |
| { |
| struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); |
| int id = rdev->desc->id - RK808_ID_DCDC1; |
| struct gpio_desc *gpio = pdata->dvs_gpio[id]; |
| unsigned int val; |
| int ret; |
| |
| if (!gpio || gpiod_get_value(gpio) == 0) |
| return regulator_get_voltage_sel_regmap(rdev); |
| |
| ret = regmap_read(rdev->regmap, |
| rdev->desc->vsel_reg + RK808_DVS_REG_OFFSET, |
| &val); |
| if (ret != 0) |
| return ret; |
| |
| val &= rdev->desc->vsel_mask; |
| val >>= ffs(rdev->desc->vsel_mask) - 1; |
| |
| return val; |
| } |
| |
| static int rk808_buck1_2_i2c_set_voltage_sel(struct regulator_dev *rdev, |
| unsigned sel) |
| { |
| int ret, delta_sel; |
| unsigned int old_sel, tmp, val, mask = rdev->desc->vsel_mask; |
| |
| ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val); |
| if (ret != 0) |
| return ret; |
| |
| tmp = val & ~mask; |
| old_sel = val & mask; |
| old_sel >>= ffs(mask) - 1; |
| delta_sel = sel - old_sel; |
| |
| /* |
| * If directly modify the register to change the voltage, we will face |
| * the risk of overshoot. Put it into a multi-step, can effectively |
| * avoid this problem, a step is 100mv here. |
| */ |
| while (delta_sel > MAX_STEPS_ONE_TIME) { |
| old_sel += MAX_STEPS_ONE_TIME; |
| val = old_sel << (ffs(mask) - 1); |
| val |= tmp; |
| |
| /* |
| * i2c is 400kHz (2.5us per bit) and we must transmit _at least_ |
| * 3 bytes (24 bits) plus start and stop so 26 bits. So we've |
| * got more than 65 us between each voltage change and thus |
| * won't ramp faster than ~1500 uV / us. |
| */ |
| ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); |
| delta_sel = sel - old_sel; |
| } |
| |
| sel <<= ffs(mask) - 1; |
| val = tmp | sel; |
| ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val); |
| |
| /* |
| * When we change the voltage register directly, the ramp rate is about |
| * 100000uv/us, wait 1us to make sure the target voltage to be stable, |
| * so we needn't wait extra time after that. |
| */ |
| udelay(1); |
| |
| return ret; |
| } |
| |
| static int rk808_buck1_2_set_voltage_sel(struct regulator_dev *rdev, |
| unsigned sel) |
| { |
| struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); |
| int id = rdev->desc->id - RK808_ID_DCDC1; |
| struct gpio_desc *gpio = pdata->dvs_gpio[id]; |
| unsigned int reg = rdev->desc->vsel_reg; |
| unsigned old_sel; |
| int ret, gpio_level; |
| |
| if (!gpio) |
| return rk808_buck1_2_i2c_set_voltage_sel(rdev, sel); |
| |
| gpio_level = gpiod_get_value(gpio); |
| if (gpio_level == 0) { |
| reg += RK808_DVS_REG_OFFSET; |
| ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &old_sel); |
| } else { |
| ret = regmap_read(rdev->regmap, |
| reg + RK808_DVS_REG_OFFSET, |
| &old_sel); |
| } |
| |
| if (ret != 0) |
| return ret; |
| |
| sel <<= ffs(rdev->desc->vsel_mask) - 1; |
| sel |= old_sel & ~rdev->desc->vsel_mask; |
| |
| ret = regmap_write(rdev->regmap, reg, sel); |
| if (ret) |
| return ret; |
| |
| gpiod_set_value(gpio, !gpio_level); |
| |
| return ret; |
| } |
| |
| static int rk808_buck1_2_set_voltage_time_sel(struct regulator_dev *rdev, |
| unsigned int old_selector, |
| unsigned int new_selector) |
| { |
| struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev); |
| int id = rdev->desc->id - RK808_ID_DCDC1; |
| struct gpio_desc *gpio = pdata->dvs_gpio[id]; |
| |
| /* if there is no dvs1/2 pin, we don't need wait extra time here. */ |
| if (!gpio) |
| return 0; |
| |
| return regulator_set_voltage_time_sel(rdev, old_selector, new_selector); |
| } |
| |
| static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) |
| { |
| unsigned int ramp_value = RK808_RAMP_RATE_10MV_PER_US; |
| unsigned int reg = rk808_buck_config_regs[rdev->desc->id - |
| RK808_ID_DCDC1]; |
| |
| switch (ramp_delay) { |
| case 1 ... 2000: |
| ramp_value = RK808_RAMP_RATE_2MV_PER_US; |
| break; |
| case 2001 ... 4000: |
| ramp_value = RK808_RAMP_RATE_4MV_PER_US; |
| break; |
| case 4001 ... 6000: |
| ramp_value = RK808_RAMP_RATE_6MV_PER_US; |
| break; |
| case 6001 ... 10000: |
| break; |
| default: |
| pr_warn("%s ramp_delay: %d not supported, setting 10000\n", |
| rdev->desc->name, ramp_delay); |
| } |
| |
| return regmap_update_bits(rdev->regmap, reg, |
| RK808_RAMP_RATE_MASK, ramp_value); |
| } |
| |
| static int rk808_set_suspend_voltage(struct regulator_dev *rdev, int uv) |
| { |
| unsigned int reg; |
| int sel = regulator_map_voltage_linear(rdev, uv, uv); |
| |
| if (sel < 0) |
| return -EINVAL; |
| |
| reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; |
| |
| return regmap_update_bits(rdev->regmap, reg, |
| rdev->desc->vsel_mask, |
| sel); |
| } |
| |
| static int rk808_set_suspend_voltage_range(struct regulator_dev *rdev, int uv) |
| { |
| unsigned int reg; |
| int sel = regulator_map_voltage_linear_range(rdev, uv, uv); |
| |
| if (sel < 0) |
| return -EINVAL; |
| |
| reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET; |
| |
| return regmap_update_bits(rdev->regmap, reg, |
| rdev->desc->vsel_mask, |
| sel); |
| } |
| |
| static int rk808_set_suspend_enable(struct regulator_dev *rdev) |
| { |
| unsigned int reg; |
| |
| reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; |
| |
| return regmap_update_bits(rdev->regmap, reg, |
| rdev->desc->enable_mask, |
| 0); |
| } |
| |
| static int rk808_set_suspend_disable(struct regulator_dev *rdev) |
| { |
| unsigned int reg; |
| |
| reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET; |
| |
| return regmap_update_bits(rdev->regmap, reg, |
| rdev->desc->enable_mask, |
| rdev->desc->enable_mask); |
| } |
| |
| static struct regulator_ops rk808_buck1_2_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .get_voltage_sel = rk808_buck1_2_get_voltage_sel_regmap, |
| .set_voltage_sel = rk808_buck1_2_set_voltage_sel, |
| .set_voltage_time_sel = rk808_buck1_2_set_voltage_time_sel, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .set_ramp_delay = rk808_set_ramp_delay, |
| .set_suspend_voltage = rk808_set_suspend_voltage, |
| .set_suspend_enable = rk808_set_suspend_enable, |
| .set_suspend_disable = rk808_set_suspend_disable, |
| }; |
| |
| static struct regulator_ops rk808_reg_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .map_voltage = regulator_map_voltage_linear, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .set_suspend_voltage = rk808_set_suspend_voltage, |
| .set_suspend_enable = rk808_set_suspend_enable, |
| .set_suspend_disable = rk808_set_suspend_disable, |
| }; |
| |
| static struct regulator_ops rk808_reg_ops_ranges = { |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .set_suspend_voltage = rk808_set_suspend_voltage_range, |
| .set_suspend_enable = rk808_set_suspend_enable, |
| .set_suspend_disable = rk808_set_suspend_disable, |
| }; |
| |
| static struct regulator_ops rk808_switch_ops = { |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .set_suspend_enable = rk808_set_suspend_enable, |
| .set_suspend_disable = rk808_set_suspend_disable, |
| }; |
| |
| static const struct regulator_desc rk808_reg[] = { |
| { |
| .name = "DCDC_REG1", |
| .supply_name = "vcc1", |
| .of_match = of_match_ptr("DCDC_REG1"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK808_ID_DCDC1, |
| .ops = &rk808_buck1_2_ops, |
| .type = REGULATOR_VOLTAGE, |
| .min_uV = 712500, |
| .uV_step = 12500, |
| .n_voltages = 64, |
| .vsel_reg = RK808_BUCK1_ON_VSEL_REG, |
| .vsel_mask = RK808_BUCK_VSEL_MASK, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(0), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "DCDC_REG2", |
| .supply_name = "vcc2", |
| .of_match = of_match_ptr("DCDC_REG2"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK808_ID_DCDC2, |
| .ops = &rk808_buck1_2_ops, |
| .type = REGULATOR_VOLTAGE, |
| .min_uV = 712500, |
| .uV_step = 12500, |
| .n_voltages = 64, |
| .vsel_reg = RK808_BUCK2_ON_VSEL_REG, |
| .vsel_mask = RK808_BUCK_VSEL_MASK, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(1), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "DCDC_REG3", |
| .supply_name = "vcc3", |
| .of_match = of_match_ptr("DCDC_REG3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK808_ID_DCDC3, |
| .ops = &rk808_switch_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 1, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(2), |
| .owner = THIS_MODULE, |
| }, |
| RK8XX_DESC(RK808_ID_DCDC4, "DCDC_REG4", "vcc4", 1800, 3300, 100, |
| RK808_BUCK4_ON_VSEL_REG, RK808_BUCK4_VSEL_MASK, |
| RK808_DCDC_EN_REG, BIT(3), 0), |
| RK8XX_DESC(RK808_ID_LDO1, "LDO_REG1", "vcc6", 1800, 3400, 100, |
| RK808_LDO1_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(0), 400), |
| RK8XX_DESC(RK808_ID_LDO2, "LDO_REG2", "vcc6", 1800, 3400, 100, |
| RK808_LDO2_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(1), 400), |
| { |
| .name = "LDO_REG3", |
| .supply_name = "vcc7", |
| .of_match = of_match_ptr("LDO_REG3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK808_ID_LDO3, |
| .ops = &rk808_reg_ops_ranges, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 16, |
| .linear_ranges = rk808_ldo3_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges), |
| .vsel_reg = RK808_LDO3_ON_VSEL_REG, |
| .vsel_mask = RK808_BUCK4_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(2), |
| .enable_time = 400, |
| .owner = THIS_MODULE, |
| }, |
| RK8XX_DESC(RK808_ID_LDO4, "LDO_REG4", "vcc9", 1800, 3400, 100, |
| RK808_LDO4_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(3), 400), |
| RK8XX_DESC(RK808_ID_LDO5, "LDO_REG5", "vcc9", 1800, 3400, 100, |
| RK808_LDO5_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(4), 400), |
| RK8XX_DESC(RK808_ID_LDO6, "LDO_REG6", "vcc10", 800, 2500, 100, |
| RK808_LDO6_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(5), 400), |
| RK8XX_DESC(RK808_ID_LDO7, "LDO_REG7", "vcc7", 800, 2500, 100, |
| RK808_LDO7_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(6), 400), |
| RK8XX_DESC(RK808_ID_LDO8, "LDO_REG8", "vcc11", 1800, 3400, 100, |
| RK808_LDO8_ON_VSEL_REG, RK808_LDO_VSEL_MASK, RK808_LDO_EN_REG, |
| BIT(7), 400), |
| RK8XX_DESC_SWITCH(RK808_ID_SWITCH1, "SWITCH_REG1", "vcc8", |
| RK808_DCDC_EN_REG, BIT(5)), |
| RK8XX_DESC_SWITCH(RK808_ID_SWITCH2, "SWITCH_REG2", "vcc12", |
| RK808_DCDC_EN_REG, BIT(6)), |
| }; |
| |
| static const struct regulator_desc rk818_reg[] = { |
| { |
| .name = "DCDC_REG1", |
| .supply_name = "vcc1", |
| .of_match = of_match_ptr("DCDC_REG1"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK818_ID_DCDC1, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .min_uV = 712500, |
| .uV_step = 12500, |
| .n_voltages = 64, |
| .vsel_reg = RK818_BUCK1_ON_VSEL_REG, |
| .vsel_mask = RK818_BUCK_VSEL_MASK, |
| .enable_reg = RK818_DCDC_EN_REG, |
| .enable_mask = BIT(0), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "DCDC_REG2", |
| .supply_name = "vcc2", |
| .of_match = of_match_ptr("DCDC_REG2"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK818_ID_DCDC2, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .min_uV = 712500, |
| .uV_step = 12500, |
| .n_voltages = 64, |
| .vsel_reg = RK818_BUCK2_ON_VSEL_REG, |
| .vsel_mask = RK818_BUCK_VSEL_MASK, |
| .enable_reg = RK818_DCDC_EN_REG, |
| .enable_mask = BIT(1), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "DCDC_REG3", |
| .supply_name = "vcc3", |
| .of_match = of_match_ptr("DCDC_REG3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK818_ID_DCDC3, |
| .ops = &rk808_switch_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 1, |
| .enable_reg = RK818_DCDC_EN_REG, |
| .enable_mask = BIT(2), |
| .owner = THIS_MODULE, |
| }, |
| RK8XX_DESC(RK818_ID_DCDC4, "DCDC_REG4", "vcc4", 1800, 3600, 100, |
| RK818_BUCK4_ON_VSEL_REG, RK818_BUCK4_VSEL_MASK, |
| RK818_DCDC_EN_REG, BIT(3), 0), |
| RK8XX_DESC(RK818_ID_BOOST, "DCDC_BOOST", "boost", 4700, 5400, 100, |
| RK818_BOOST_LDO9_ON_VSEL_REG, RK818_BOOST_ON_VSEL_MASK, |
| RK818_DCDC_EN_REG, BIT(4), 0), |
| RK8XX_DESC(RK818_ID_LDO1, "LDO_REG1", "vcc6", 1800, 3400, 100, |
| RK818_LDO1_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(0), 400), |
| RK8XX_DESC(RK818_ID_LDO2, "LDO_REG2", "vcc6", 1800, 3400, 100, |
| RK818_LDO2_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(1), 400), |
| { |
| .name = "LDO_REG3", |
| .supply_name = "vcc7", |
| .of_match = of_match_ptr("LDO_REG3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = RK818_ID_LDO3, |
| .ops = &rk808_reg_ops_ranges, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 16, |
| .linear_ranges = rk808_ldo3_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo3_voltage_ranges), |
| .vsel_reg = RK818_LDO3_ON_VSEL_REG, |
| .vsel_mask = RK818_LDO3_ON_VSEL_MASK, |
| .enable_reg = RK818_LDO_EN_REG, |
| .enable_mask = BIT(2), |
| .enable_time = 400, |
| .owner = THIS_MODULE, |
| }, |
| RK8XX_DESC(RK818_ID_LDO4, "LDO_REG4", "vcc8", 1800, 3400, 100, |
| RK818_LDO4_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(3), 400), |
| RK8XX_DESC(RK818_ID_LDO5, "LDO_REG5", "vcc7", 1800, 3400, 100, |
| RK818_LDO5_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(4), 400), |
| RK8XX_DESC(RK818_ID_LDO6, "LDO_REG6", "vcc8", 800, 2500, 100, |
| RK818_LDO6_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(5), 400), |
| RK8XX_DESC(RK818_ID_LDO7, "LDO_REG7", "vcc7", 800, 2500, 100, |
| RK818_LDO7_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(6), 400), |
| RK8XX_DESC(RK818_ID_LDO8, "LDO_REG8", "vcc8", 1800, 3400, 100, |
| RK818_LDO8_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK818_LDO_EN_REG, |
| BIT(7), 400), |
| RK8XX_DESC(RK818_ID_LDO9, "LDO_REG9", "vcc9", 1800, 3400, 100, |
| RK818_BOOST_LDO9_ON_VSEL_REG, RK818_LDO_VSEL_MASK, |
| RK818_DCDC_EN_REG, BIT(5), 400), |
| RK8XX_DESC_SWITCH(RK818_ID_SWITCH, "SWITCH_REG", "vcc9", |
| RK818_DCDC_EN_REG, BIT(6)), |
| RK8XX_DESC_SWITCH(RK818_ID_HDMI_SWITCH, "HDMI_SWITCH", "h_5v", |
| RK818_H5V_EN_REG, BIT(0)), |
| RK8XX_DESC_SWITCH(RK818_ID_OTG_SWITCH, "OTG_SWITCH", "usb", |
| RK818_DCDC_EN_REG, BIT(7)), |
| }; |
| |
| static int rk808_regulator_dt_parse_pdata(struct device *dev, |
| struct device *client_dev, |
| struct regmap *map, |
| struct rk808_regulator_data *pdata) |
| { |
| struct device_node *np; |
| int tmp, ret = 0, i; |
| |
| np = of_get_child_by_name(client_dev->of_node, "regulators"); |
| if (!np) |
| return -ENXIO; |
| |
| for (i = 0; i < ARRAY_SIZE(pdata->dvs_gpio); i++) { |
| pdata->dvs_gpio[i] = |
| devm_gpiod_get_index_optional(client_dev, "dvs", i, |
| GPIOD_OUT_LOW); |
| if (IS_ERR(pdata->dvs_gpio[i])) { |
| ret = PTR_ERR(pdata->dvs_gpio[i]); |
| dev_err(dev, "failed to get dvs%d gpio (%d)\n", i, ret); |
| goto dt_parse_end; |
| } |
| |
| if (!pdata->dvs_gpio[i]) { |
| dev_warn(dev, "there is no dvs%d gpio\n", i); |
| continue; |
| } |
| |
| tmp = i ? RK808_DVS2_POL : RK808_DVS1_POL; |
| ret = regmap_update_bits(map, RK808_IO_POL_REG, tmp, |
| gpiod_is_active_low(pdata->dvs_gpio[i]) ? |
| 0 : tmp); |
| } |
| |
| dt_parse_end: |
| of_node_put(np); |
| return ret; |
| } |
| |
| static int rk808_regulator_probe(struct platform_device *pdev) |
| { |
| struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent); |
| struct i2c_client *client = rk808->i2c; |
| struct regulator_config config = {}; |
| struct regulator_dev *rk808_rdev; |
| struct rk808_regulator_data *pdata; |
| const struct regulator_desc *regulators; |
| int ret, i, nregulators; |
| |
| pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| if (!pdata) |
| return -ENOMEM; |
| |
| ret = rk808_regulator_dt_parse_pdata(&pdev->dev, &client->dev, |
| rk808->regmap, pdata); |
| if (ret < 0) |
| return ret; |
| |
| platform_set_drvdata(pdev, pdata); |
| |
| switch (rk808->variant) { |
| case RK808_ID: |
| regulators = rk808_reg; |
| nregulators = RK808_NUM_REGULATORS; |
| break; |
| case RK818_ID: |
| regulators = rk818_reg; |
| nregulators = RK818_NUM_REGULATORS; |
| break; |
| default: |
| dev_err(&client->dev, "unsupported RK8XX ID %lu\n", |
| rk808->variant); |
| return -EINVAL; |
| } |
| |
| config.dev = &client->dev; |
| config.driver_data = pdata; |
| config.regmap = rk808->regmap; |
| |
| /* Instantiate the regulators */ |
| for (i = 0; i < nregulators; i++) { |
| rk808_rdev = devm_regulator_register(&pdev->dev, |
| ®ulators[i], &config); |
| if (IS_ERR(rk808_rdev)) { |
| dev_err(&client->dev, |
| "failed to register %d regulator\n", i); |
| return PTR_ERR(rk808_rdev); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct platform_driver rk808_regulator_driver = { |
| .probe = rk808_regulator_probe, |
| .driver = { |
| .name = "rk808-regulator" |
| }, |
| }; |
| |
| module_platform_driver(rk808_regulator_driver); |
| |
| MODULE_DESCRIPTION("regulator driver for the RK808/RK818 series PMICs"); |
| 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_LICENSE("GPL"); |
| MODULE_ALIAS("platform:rk808-regulator"); |