| /* |
| * Regulator driver for Rockchip RK808 |
| * |
| * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd |
| * |
| * Author: Chris Zhong <zyw@rock-chips.com> |
| * Author: Zhang Qing <zhangqing@rock-chips.com> |
| * |
| * 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/module.h> |
| #include <linux/init.h> |
| #include <linux/i2c.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/mfd/rk808.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| /* |
| * Field Definitions. |
| */ |
| #define RK808_BUCK_VSEL_MASK 0x3f |
| #define RK808_BUCK4_VSEL_MASK 0xf |
| #define RK808_LDO_VSEL_MASK 0x1f |
| |
| static const int buck_set_vol_base_addr[] = { |
| RK808_BUCK1_ON_VSEL_REG, |
| RK808_BUCK2_ON_VSEL_REG, |
| RK808_BUCK3_CONFIG_REG, |
| RK808_BUCK4_ON_VSEL_REG, |
| }; |
| |
| static const int buck_contr_base_addr[] = { |
| RK808_BUCK1_CONFIG_REG, |
| RK808_BUCK2_CONFIG_REG, |
| RK808_BUCK3_CONFIG_REG, |
| RK808_BUCK4_CONFIG_REG, |
| }; |
| |
| #define rk808_BUCK_SET_VOL_REG(x) (buck_set_vol_base_addr[x]) |
| #define rk808_BUCK_CONTR_REG(x) (buck_contr_base_addr[x]) |
| #define rk808_LDO_SET_VOL_REG(x) (ldo_set_vol_base_addr[x]) |
| |
| static const int ldo_set_vol_base_addr[] = { |
| RK808_LDO1_ON_VSEL_REG, |
| RK808_LDO2_ON_VSEL_REG, |
| RK808_LDO3_ON_VSEL_REG, |
| RK808_LDO4_ON_VSEL_REG, |
| RK808_LDO5_ON_VSEL_REG, |
| RK808_LDO6_ON_VSEL_REG, |
| RK808_LDO7_ON_VSEL_REG, |
| RK808_LDO8_ON_VSEL_REG, |
| }; |
| |
| /* |
| * rk808 voltage number |
| */ |
| static const struct regulator_linear_range rk808_buck_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(700000, 0, 63, 12500), |
| }; |
| |
| static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1800000, 0, 15, 100000), |
| }; |
| |
| static const struct regulator_linear_range rk808_ldo_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1800000, 0, 16, 100000), |
| }; |
| |
| 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 const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000), |
| }; |
| |
| static struct regulator_ops rk808_reg_ops = { |
| .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, |
| }; |
| |
| static struct regulator_ops rk808_switch_ops = { |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| }; |
| |
| static const struct regulator_desc rk808_reg[] = { |
| { |
| .name = "DCDC_REG1", |
| .id = RK808_ID_DCDC1, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 64, |
| .linear_ranges = rk808_buck_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), |
| .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", |
| .id = RK808_ID_DCDC2, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 64, |
| .linear_ranges = rk808_buck_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_buck_voltage_ranges), |
| .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", |
| .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, |
| }, { |
| .name = "DCDC_REG4", |
| .id = RK808_ID_DCDC4, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_buck4_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_buck4_voltage_ranges), |
| .vsel_reg = RK808_BUCK4_ON_VSEL_REG, |
| .vsel_mask = RK808_BUCK4_VSEL_MASK, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(3), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG1", |
| .id = RK808_ID_LDO1, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_ldo_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), |
| .vsel_reg = RK808_LDO1_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(0), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG2", |
| .id = RK808_ID_LDO2, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_ldo_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), |
| .vsel_reg = RK808_LDO2_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(1), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG3", |
| .id = RK808_ID_LDO3, |
| .ops = &rk808_reg_ops, |
| .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), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG4", |
| .id = RK808_ID_LDO4, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_ldo_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), |
| .vsel_reg = RK808_LDO4_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(3), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG5", |
| .id = RK808_ID_LDO5, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_ldo_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), |
| .vsel_reg = RK808_LDO5_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(4), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG6", |
| .id = RK808_ID_LDO6, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 18, |
| .linear_ranges = rk808_ldo6_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), |
| .vsel_reg = RK808_LDO6_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(5), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG7", |
| .id = RK808_ID_LDO7, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 18, |
| .linear_ranges = rk808_ldo6_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo6_voltage_ranges), |
| .vsel_reg = RK808_LDO7_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(6), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "LDO_REG8", |
| .id = RK808_ID_LDO8, |
| .ops = &rk808_reg_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = 17, |
| .linear_ranges = rk808_ldo_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(rk808_ldo_voltage_ranges), |
| .vsel_reg = RK808_LDO8_ON_VSEL_REG, |
| .vsel_mask = RK808_LDO_VSEL_MASK, |
| .enable_reg = RK808_LDO_EN_REG, |
| .enable_mask = BIT(7), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "SWITCH_REG1", |
| .id = RK808_ID_SWITCH1, |
| .ops = &rk808_switch_ops, |
| .type = REGULATOR_VOLTAGE, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(5), |
| .owner = THIS_MODULE, |
| }, { |
| .name = "SWITCH_REG2", |
| .id = RK808_ID_SWITCH2, |
| .ops = &rk808_switch_ops, |
| .type = REGULATOR_VOLTAGE, |
| .enable_reg = RK808_DCDC_EN_REG, |
| .enable_mask = BIT(6), |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| static struct of_regulator_match rk808_reg_matches[] = { |
| [RK808_ID_DCDC1] = { .name = "DCDC_REG1" }, |
| [RK808_ID_DCDC2] = { .name = "DCDC_REG2" }, |
| [RK808_ID_DCDC3] = { .name = "DCDC_REG3" }, |
| [RK808_ID_DCDC4] = { .name = "DCDC_REG4" }, |
| [RK808_ID_LDO1] = { .name = "LDO_REG1" }, |
| [RK808_ID_LDO2] = { .name = "LDO_REG2" }, |
| [RK808_ID_LDO3] = { .name = "LDO_REG3" }, |
| [RK808_ID_LDO4] = { .name = "LDO_REG4" }, |
| [RK808_ID_LDO5] = { .name = "LDO_REG5" }, |
| [RK808_ID_LDO6] = { .name = "LDO_REG6" }, |
| [RK808_ID_LDO7] = { .name = "LDO_REG7" }, |
| [RK808_ID_LDO8] = { .name = "LDO_REG8" }, |
| [RK808_ID_SWITCH1] = { .name = "SWITCH_REG1" }, |
| [RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" }, |
| }; |
| |
| static int rk808_regulator_dts(struct rk808 *rk808) |
| { |
| struct device_node *np, *reg_np; |
| struct i2c_client *client = rk808->i2c; |
| struct rk808_board *pdata = rk808->pdata; |
| int i, ret; |
| |
| np = client->dev.of_node; |
| if (!np) { |
| dev_err(&client->dev, "could not find pmic sub-node\n"); |
| return -ENXIO; |
| } |
| |
| reg_np = of_get_child_by_name(np, "regulators"); |
| if (!reg_np) |
| return -ENXIO; |
| |
| ret = of_regulator_match(&client->dev, reg_np, rk808_reg_matches, |
| RK808_NUM_REGULATORS); |
| if (ret < 0) { |
| dev_err(&client->dev, |
| "failed to parse regulator data: %d\n", ret); |
| return ret; |
| } |
| |
| for (i = 0; i < RK808_NUM_REGULATORS; i++) { |
| if (!rk808_reg_matches[i].init_data || |
| !rk808_reg_matches[i].of_node) |
| continue; |
| |
| pdata->rk808_init_data[i] = rk808_reg_matches[i].init_data; |
| pdata->of_node[i] = rk808_reg_matches[i].of_node; |
| } |
| |
| return 0; |
| } |
| |
| 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 rk808_board *pdata = rk808->pdata; |
| struct regulator_config config = {}; |
| struct regulator_dev *rk808_rdev; |
| struct regulator_init_data *reg_data; |
| int i = 0; |
| int ret = 0; |
| |
| if (!pdata) { |
| dev_warn(&client->dev, "%s no pdata, create it\n", __func__); |
| pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); |
| if (!pdata) |
| return -ENOMEM; |
| } |
| |
| ret = rk808_regulator_dts(rk808); |
| if (ret) |
| return ret; |
| |
| rk808->num_regulators = RK808_NUM_REGULATORS; |
| rk808->rdev = devm_kzalloc(&pdev->dev, RK808_NUM_REGULATORS * |
| sizeof(struct regulator_dev *), GFP_KERNEL); |
| if (!rk808->rdev) |
| return -ENOMEM; |
| |
| /* Instantiate the regulators */ |
| for (i = 0; i < RK808_NUM_REGULATORS; i++) { |
| reg_data = pdata->rk808_init_data[i]; |
| if (!reg_data) |
| continue; |
| |
| config.dev = &client->dev; |
| config.driver_data = rk808; |
| config.regmap = rk808->regmap; |
| |
| if (client->dev.of_node) |
| config.of_node = pdata->of_node[i]; |
| |
| reg_data->supply_regulator = rk808_reg[i].name; |
| config.init_data = reg_data; |
| |
| rk808_rdev = devm_regulator_register(&pdev->dev, |
| &rk808_reg[i], &config); |
| if (IS_ERR(rk808_rdev)) { |
| dev_err(&client->dev, |
| "failed to register %d regulator\n", i); |
| return PTR_ERR(rk808_rdev); |
| } |
| rk808->rdev[i] = rk808_rdev; |
| } |
| return 0; |
| } |
| |
| static struct platform_driver rk808_regulator_driver = { |
| .probe = rk808_regulator_probe, |
| .driver = { |
| .name = "rk808-regulator", |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| module_platform_driver(rk808_regulator_driver); |
| |
| MODULE_DESCRIPTION("regulator driver for the rk808 series PMICs"); |
| MODULE_AUTHOR("Chris Zhong<zyw@rock-chips.com>"); |
| MODULE_AUTHOR("Zhang Qing<zhanqging@rock-chips.com>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:rk808-regulator"); |