/* * Regulator driver for Rockchip RK808 * * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd * * Author: Chris Zhong * Author: Zhang Qing * * 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 #include #include #include #include #include #include #include #include #include #include #include /* * 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 rk808_board *pdata = rk808->pdata; struct device_node *np, *reg_np; int i, ret; np = rk808->dev->of_node; if (!np) { dev_err(rk808->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(rk808->dev, reg_np, rk808_reg_matches, RK808_NUM_REGULATORS); if (ret < 0) { dev_err(rk808->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 rk808_board *pdata; struct regulator_config config = {}; struct regulator_dev *rk808_rdev; struct regulator_init_data *reg_data; int i = 0; int ret = 0; dev_dbg(rk808->dev, "%s\n", __func__); if (!rk808) { dev_err(rk808->dev, "%s no rk808\n", __func__); return -ENODEV; } pdata = rk808->pdata; if (!pdata) { dev_warn(rk808->dev, "%s no pdata, create it\n", __func__); pdata = devm_kzalloc(rk808->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 = rk808->dev; config.driver_data = rk808; config.regmap = rk808->regmap; if (rk808->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(rk808->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"); MODULE_AUTHOR("Zhang Qing"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:rk808-regulator");