// SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2018 ROHM Semiconductors // bd70528-regulator.c ROHM BD70528MWV regulator driver #include #include #include #include #include #include #include #include #include #include #include #include #include #define BUCK_RAMPRATE_250MV 0 #define BUCK_RAMPRATE_125MV 1 #define BUCK_RAMP_MAX 250 static const struct regulator_linear_range bd70528_buck1_volts[] = { REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x1, 600000), REGULATOR_LINEAR_RANGE(2750000, 0x2, 0xf, 50000), }; static const struct regulator_linear_range bd70528_buck2_volts[] = { REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x1, 300000), REGULATOR_LINEAR_RANGE(1550000, 0x2, 0xd, 50000), REGULATOR_LINEAR_RANGE(3000000, 0xe, 0xf, 300000), }; static const struct regulator_linear_range bd70528_buck3_volts[] = { REGULATOR_LINEAR_RANGE(800000, 0x00, 0xd, 50000), REGULATOR_LINEAR_RANGE(1800000, 0xe, 0xf, 0), }; /* All LDOs have same voltage ranges */ static const struct regulator_linear_range bd70528_ldo_volts[] = { REGULATOR_LINEAR_RANGE(1650000, 0x0, 0x07, 50000), REGULATOR_LINEAR_RANGE(2100000, 0x8, 0x0f, 100000), REGULATOR_LINEAR_RANGE(2850000, 0x10, 0x19, 50000), REGULATOR_LINEAR_RANGE(3300000, 0x19, 0x1f, 0), }; /* Also both LEDs support same voltages */ static const unsigned int led_volts[] = { 20000, 30000 }; static int bd70528_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { if (ramp_delay > 0 && ramp_delay <= BUCK_RAMP_MAX) { unsigned int ramp_value = BUCK_RAMPRATE_250MV; if (ramp_delay <= 125) ramp_value = BUCK_RAMPRATE_125MV; return regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg, BD70528_MASK_BUCK_RAMP, ramp_value << BD70528_SIFT_BUCK_RAMP); } dev_err(&rdev->dev, "%s: ramp_delay: %d not supported\n", rdev->desc->name, ramp_delay); return -EINVAL; } static int bd70528_led_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel) { int ret; ret = regulator_is_enabled_regmap(rdev); if (ret < 0) return ret; if (ret == 0) return regulator_set_voltage_sel_regmap(rdev, sel); dev_err(&rdev->dev, "LED voltage change not allowed when led is enabled\n"); return -EBUSY; } static const struct regulator_ops bd70528_buck_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_ramp_delay = bd70528_set_ramp_delay, }; static const struct regulator_ops bd70528_ldo_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .set_ramp_delay = bd70528_set_ramp_delay, }; static const struct regulator_ops bd70528_led_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_table, .set_voltage_sel = bd70528_led_set_voltage_sel, .get_voltage_sel = regulator_get_voltage_sel_regmap, }; static const struct regulator_desc bd70528_desc[] = { { .name = "buck1", .of_match = of_match_ptr("BUCK1"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_BUCK1, .ops = &bd70528_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_buck1_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_buck1_volts), .n_voltages = BD70528_BUCK_VOLTS, .enable_reg = BD70528_REG_BUCK1_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_BUCK1_VOLT, .vsel_mask = BD70528_MASK_BUCK_VOLT, .owner = THIS_MODULE, }, { .name = "buck2", .of_match = of_match_ptr("BUCK2"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_BUCK2, .ops = &bd70528_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_buck2_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_buck2_volts), .n_voltages = BD70528_BUCK_VOLTS, .enable_reg = BD70528_REG_BUCK2_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_BUCK2_VOLT, .vsel_mask = BD70528_MASK_BUCK_VOLT, .owner = THIS_MODULE, }, { .name = "buck3", .of_match = of_match_ptr("BUCK3"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_BUCK3, .ops = &bd70528_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_buck3_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_buck3_volts), .n_voltages = BD70528_BUCK_VOLTS, .enable_reg = BD70528_REG_BUCK3_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_BUCK3_VOLT, .vsel_mask = BD70528_MASK_BUCK_VOLT, .owner = THIS_MODULE, }, { .name = "ldo1", .of_match = of_match_ptr("LDO1"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_LDO1, .ops = &bd70528_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts), .n_voltages = BD70528_LDO_VOLTS, .enable_reg = BD70528_REG_LDO1_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_LDO1_VOLT, .vsel_mask = BD70528_MASK_LDO_VOLT, .owner = THIS_MODULE, }, { .name = "ldo2", .of_match = of_match_ptr("LDO2"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_LDO2, .ops = &bd70528_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts), .n_voltages = BD70528_LDO_VOLTS, .enable_reg = BD70528_REG_LDO2_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_LDO2_VOLT, .vsel_mask = BD70528_MASK_LDO_VOLT, .owner = THIS_MODULE, }, { .name = "ldo3", .of_match = of_match_ptr("LDO3"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_LDO3, .ops = &bd70528_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd70528_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts), .n_voltages = BD70528_LDO_VOLTS, .enable_reg = BD70528_REG_LDO3_EN, .enable_mask = BD70528_MASK_RUN_EN, .vsel_reg = BD70528_REG_LDO3_VOLT, .vsel_mask = BD70528_MASK_LDO_VOLT, .owner = THIS_MODULE, }, { .name = "ldo_led1", .of_match = of_match_ptr("LDO_LED1"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_LED1, .ops = &bd70528_led_ops, .type = REGULATOR_VOLTAGE, .volt_table = &led_volts[0], .n_voltages = ARRAY_SIZE(led_volts), .enable_reg = BD70528_REG_LED_EN, .enable_mask = BD70528_MASK_LED1_EN, .vsel_reg = BD70528_REG_LED_VOLT, .vsel_mask = BD70528_MASK_LED1_VOLT, .owner = THIS_MODULE, }, { .name = "ldo_led2", .of_match = of_match_ptr("LDO_LED2"), .regulators_node = of_match_ptr("regulators"), .id = BD70528_LED2, .ops = &bd70528_led_ops, .type = REGULATOR_VOLTAGE, .volt_table = &led_volts[0], .n_voltages = ARRAY_SIZE(led_volts), .enable_reg = BD70528_REG_LED_EN, .enable_mask = BD70528_MASK_LED2_EN, .vsel_reg = BD70528_REG_LED_VOLT, .vsel_mask = BD70528_MASK_LED2_VOLT, .owner = THIS_MODULE, }, }; static int bd70528_probe(struct platform_device *pdev) { struct rohm_regmap_dev *bd70528; int i; struct regulator_config config = { .dev = pdev->dev.parent, }; bd70528 = dev_get_drvdata(pdev->dev.parent); if (!bd70528) { dev_err(&pdev->dev, "No MFD driver data\n"); return -EINVAL; } config.regmap = bd70528->regmap; for (i = 0; i < ARRAY_SIZE(bd70528_desc); i++) { struct regulator_dev *rdev; rdev = devm_regulator_register(&pdev->dev, &bd70528_desc[i], &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s regulator\n", bd70528_desc[i].name); return PTR_ERR(rdev); } } return 0; } static struct platform_driver bd70528_regulator = { .driver = { .name = "bd70528-pmic" }, .probe = bd70528_probe, }; module_platform_driver(bd70528_regulator); MODULE_AUTHOR("Matti Vaittinen "); MODULE_DESCRIPTION("BD70528 voltage regulator driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:bd70528-pmic");