// SPDX-License-Identifier: GPL-2.0-only // Copyright (C) 2019 ROHM Semiconductors // bd71828-regulator.c ROHM BD71828GW-DS1 regulator driver // #include <linux/delay.h> #include <linux/err.h> #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/mfd/rohm-bd71828.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> struct reg_init { unsigned int reg; unsigned int mask; unsigned int val; }; struct bd71828_regulator_data { struct regulator_desc desc; const struct rohm_dvs_config dvs; const struct reg_init *reg_inits; int reg_init_amnt; }; static const struct reg_init buck1_inits[] = { /* * DVS Buck voltages can be changed by register values or via GPIO. * Use register accesses by default. */ { .reg = BD71828_REG_PS_CTRL_1, .mask = BD71828_MASK_DVS_BUCK1_CTRL, .val = BD71828_DVS_BUCK1_CTRL_I2C, }, }; static const struct reg_init buck2_inits[] = { { .reg = BD71828_REG_PS_CTRL_1, .mask = BD71828_MASK_DVS_BUCK2_CTRL, .val = BD71828_DVS_BUCK2_CTRL_I2C, }, }; static const struct reg_init buck6_inits[] = { { .reg = BD71828_REG_PS_CTRL_1, .mask = BD71828_MASK_DVS_BUCK6_CTRL, .val = BD71828_DVS_BUCK6_CTRL_I2C, }, }; static const struct reg_init buck7_inits[] = { { .reg = BD71828_REG_PS_CTRL_1, .mask = BD71828_MASK_DVS_BUCK7_CTRL, .val = BD71828_DVS_BUCK7_CTRL_I2C, }, }; static const struct regulator_linear_range bd71828_buck1267_volts[] = { REGULATOR_LINEAR_RANGE(500000, 0x00, 0xef, 6250), REGULATOR_LINEAR_RANGE(2000000, 0xf0, 0xff, 0), }; static const struct regulator_linear_range bd71828_buck3_volts[] = { REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x0f, 50000), REGULATOR_LINEAR_RANGE(2000000, 0x10, 0x1f, 0), }; static const struct regulator_linear_range bd71828_buck4_volts[] = { REGULATOR_LINEAR_RANGE(1000000, 0x00, 0x1f, 25000), REGULATOR_LINEAR_RANGE(1800000, 0x20, 0x3f, 0), }; static const struct regulator_linear_range bd71828_buck5_volts[] = { REGULATOR_LINEAR_RANGE(2500000, 0x00, 0x0f, 50000), REGULATOR_LINEAR_RANGE(3300000, 0x10, 0x1f, 0), }; static const struct regulator_linear_range bd71828_ldo_volts[] = { REGULATOR_LINEAR_RANGE(800000, 0x00, 0x31, 50000), REGULATOR_LINEAR_RANGE(3300000, 0x32, 0x3f, 0), }; static int bd71828_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { unsigned int val; switch (ramp_delay) { case 1 ... 2500: val = 0; break; case 2501 ... 5000: val = 1; break; case 5001 ... 10000: val = 2; break; case 10001 ... 20000: val = 3; break; default: val = 3; dev_err(&rdev->dev, "ramp_delay: %d not supported, setting 20mV/uS", ramp_delay); } /* * On BD71828 the ramp delay level control reg is at offset +2 to * enable reg */ return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg + 2, BD71828_MASK_RAMP_DELAY, val << (ffs(BD71828_MASK_RAMP_DELAY) - 1)); } static int buck_set_hw_dvs_levels(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *cfg) { struct bd71828_regulator_data *data; data = container_of(desc, struct bd71828_regulator_data, desc); return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap); } static int ldo6_parse_dt(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *cfg) { int ret, i; uint32_t uv = 0; unsigned int en; struct regmap *regmap = cfg->regmap; static const char * const props[] = { "rohm,dvs-run-voltage", "rohm,dvs-idle-voltage", "rohm,dvs-suspend-voltage", "rohm,dvs-lpsr-voltage" }; unsigned int mask[] = { BD71828_MASK_RUN_EN, BD71828_MASK_IDLE_EN, BD71828_MASK_SUSP_EN, BD71828_MASK_LPSR_EN }; for (i = 0; i < ARRAY_SIZE(props); i++) { ret = of_property_read_u32(np, props[i], &uv); if (ret) { if (ret != -EINVAL) return ret; continue; } if (uv) en = 0xffffffff; else en = 0; ret = regmap_update_bits(regmap, desc->enable_reg, mask[i], en); if (ret) return ret; } return 0; } static const struct regulator_ops bd71828_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, }; static const struct regulator_ops bd71828_dvs_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 = bd71828_set_ramp_delay, }; static const struct regulator_ops bd71828_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, }; static const struct regulator_ops bd71828_ldo6_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; static const struct bd71828_regulator_data bd71828_rdata[] = { { .desc = { .name = "buck1", .of_match = of_match_ptr("BUCK1"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK1, .ops = &bd71828_dvs_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck1267_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts), .n_voltages = BD71828_BUCK1267_VOLTS, .enable_reg = BD71828_REG_BUCK1_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK1_VOLT, .vsel_mask = BD71828_MASK_BUCK1267_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK1_VOLT, .run_mask = BD71828_MASK_BUCK1267_VOLT, .idle_reg = BD71828_REG_BUCK1_IDLE_VOLT, .idle_mask = BD71828_MASK_BUCK1267_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_reg = BD71828_REG_BUCK1_SUSP_VOLT, .suspend_mask = BD71828_MASK_BUCK1267_VOLT, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, /* * LPSR voltage is same as SUSPEND voltage. Allow * setting it so that regulator can be set enabled at * LPSR state */ .lpsr_reg = BD71828_REG_BUCK1_SUSP_VOLT, .lpsr_mask = BD71828_MASK_BUCK1267_VOLT, }, .reg_inits = buck1_inits, .reg_init_amnt = ARRAY_SIZE(buck1_inits), }, { .desc = { .name = "buck2", .of_match = of_match_ptr("BUCK2"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK2, .ops = &bd71828_dvs_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck1267_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts), .n_voltages = BD71828_BUCK1267_VOLTS, .enable_reg = BD71828_REG_BUCK2_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK2_VOLT, .vsel_mask = BD71828_MASK_BUCK1267_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK2_VOLT, .run_mask = BD71828_MASK_BUCK1267_VOLT, .idle_reg = BD71828_REG_BUCK2_IDLE_VOLT, .idle_mask = BD71828_MASK_BUCK1267_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_reg = BD71828_REG_BUCK2_SUSP_VOLT, .suspend_mask = BD71828_MASK_BUCK1267_VOLT, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, .lpsr_reg = BD71828_REG_BUCK2_SUSP_VOLT, .lpsr_mask = BD71828_MASK_BUCK1267_VOLT, }, .reg_inits = buck2_inits, .reg_init_amnt = ARRAY_SIZE(buck2_inits), }, { .desc = { .name = "buck3", .of_match = of_match_ptr("BUCK3"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK3, .ops = &bd71828_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck3_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck3_volts), .n_voltages = BD71828_BUCK3_VOLTS, .enable_reg = BD71828_REG_BUCK3_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK3_VOLT, .vsel_mask = BD71828_MASK_BUCK3_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * BUCK3 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK3_VOLT, .idle_reg = BD71828_REG_BUCK3_VOLT, .suspend_reg = BD71828_REG_BUCK3_VOLT, .lpsr_reg = BD71828_REG_BUCK3_VOLT, .run_mask = BD71828_MASK_BUCK3_VOLT, .idle_mask = BD71828_MASK_BUCK3_VOLT, .suspend_mask = BD71828_MASK_BUCK3_VOLT, .lpsr_mask = BD71828_MASK_BUCK3_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "buck4", .of_match = of_match_ptr("BUCK4"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK4, .ops = &bd71828_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck4_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck4_volts), .n_voltages = BD71828_BUCK4_VOLTS, .enable_reg = BD71828_REG_BUCK4_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK4_VOLT, .vsel_mask = BD71828_MASK_BUCK4_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * BUCK4 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK4_VOLT, .idle_reg = BD71828_REG_BUCK4_VOLT, .suspend_reg = BD71828_REG_BUCK4_VOLT, .lpsr_reg = BD71828_REG_BUCK4_VOLT, .run_mask = BD71828_MASK_BUCK4_VOLT, .idle_mask = BD71828_MASK_BUCK4_VOLT, .suspend_mask = BD71828_MASK_BUCK4_VOLT, .lpsr_mask = BD71828_MASK_BUCK4_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "buck5", .of_match = of_match_ptr("BUCK5"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK5, .ops = &bd71828_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck5_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck5_volts), .n_voltages = BD71828_BUCK5_VOLTS, .enable_reg = BD71828_REG_BUCK5_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK5_VOLT, .vsel_mask = BD71828_MASK_BUCK5_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * BUCK5 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK5_VOLT, .idle_reg = BD71828_REG_BUCK5_VOLT, .suspend_reg = BD71828_REG_BUCK5_VOLT, .lpsr_reg = BD71828_REG_BUCK5_VOLT, .run_mask = BD71828_MASK_BUCK5_VOLT, .idle_mask = BD71828_MASK_BUCK5_VOLT, .suspend_mask = BD71828_MASK_BUCK5_VOLT, .lpsr_mask = BD71828_MASK_BUCK5_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "buck6", .of_match = of_match_ptr("BUCK6"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK6, .ops = &bd71828_dvs_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck1267_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts), .n_voltages = BD71828_BUCK1267_VOLTS, .enable_reg = BD71828_REG_BUCK6_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK6_VOLT, .vsel_mask = BD71828_MASK_BUCK1267_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK6_VOLT, .run_mask = BD71828_MASK_BUCK1267_VOLT, .idle_reg = BD71828_REG_BUCK6_IDLE_VOLT, .idle_mask = BD71828_MASK_BUCK1267_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_reg = BD71828_REG_BUCK6_SUSP_VOLT, .suspend_mask = BD71828_MASK_BUCK1267_VOLT, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, .lpsr_reg = BD71828_REG_BUCK6_SUSP_VOLT, .lpsr_mask = BD71828_MASK_BUCK1267_VOLT, }, .reg_inits = buck6_inits, .reg_init_amnt = ARRAY_SIZE(buck6_inits), }, { .desc = { .name = "buck7", .of_match = of_match_ptr("BUCK7"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_BUCK7, .ops = &bd71828_dvs_buck_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_buck1267_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_buck1267_volts), .n_voltages = BD71828_BUCK1267_VOLTS, .enable_reg = BD71828_REG_BUCK7_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_BUCK7_VOLT, .vsel_mask = BD71828_MASK_BUCK1267_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_BUCK7_VOLT, .run_mask = BD71828_MASK_BUCK1267_VOLT, .idle_reg = BD71828_REG_BUCK7_IDLE_VOLT, .idle_mask = BD71828_MASK_BUCK1267_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_reg = BD71828_REG_BUCK7_SUSP_VOLT, .suspend_mask = BD71828_MASK_BUCK1267_VOLT, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, .lpsr_reg = BD71828_REG_BUCK7_SUSP_VOLT, .lpsr_mask = BD71828_MASK_BUCK1267_VOLT, }, .reg_inits = buck7_inits, .reg_init_amnt = ARRAY_SIZE(buck7_inits), }, { .desc = { .name = "ldo1", .of_match = of_match_ptr("LDO1"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO1, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO1_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO1_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * LDO1 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO1_VOLT, .idle_reg = BD71828_REG_LDO1_VOLT, .suspend_reg = BD71828_REG_LDO1_VOLT, .lpsr_reg = BD71828_REG_LDO1_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "ldo2", .of_match = of_match_ptr("LDO2"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO2, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO2_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO2_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * LDO2 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO2_VOLT, .idle_reg = BD71828_REG_LDO2_VOLT, .suspend_reg = BD71828_REG_LDO2_VOLT, .lpsr_reg = BD71828_REG_LDO2_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "ldo3", .of_match = of_match_ptr("LDO3"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO3, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO3_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO3_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * LDO3 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO3_VOLT, .idle_reg = BD71828_REG_LDO3_VOLT, .suspend_reg = BD71828_REG_LDO3_VOLT, .lpsr_reg = BD71828_REG_LDO3_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "ldo4", .of_match = of_match_ptr("LDO4"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO4, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO4_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO4_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * LDO1 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO4_VOLT, .idle_reg = BD71828_REG_LDO4_VOLT, .suspend_reg = BD71828_REG_LDO4_VOLT, .lpsr_reg = BD71828_REG_LDO4_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "ldo5", .of_match = of_match_ptr("LDO5"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO5, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO5_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO5_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .of_parse_cb = buck_set_hw_dvs_levels, .owner = THIS_MODULE, }, /* * LDO5 is special. It can choose vsel settings to be configured * from 2 different registers (by GPIO). * * This driver supports only configuration where * BD71828_REG_LDO5_VOLT_L is used. */ .dvs = { .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO5_VOLT, .idle_reg = BD71828_REG_LDO5_VOLT, .suspend_reg = BD71828_REG_LDO5_VOLT, .lpsr_reg = BD71828_REG_LDO5_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, { .desc = { .name = "ldo6", .of_match = of_match_ptr("LDO6"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO6, .ops = &bd71828_ldo6_ops, .type = REGULATOR_VOLTAGE, .fixed_uV = BD71828_LDO_6_VOLTAGE, .n_voltages = 1, .enable_reg = BD71828_REG_LDO6_EN, .enable_mask = BD71828_MASK_RUN_EN, .owner = THIS_MODULE, /* * LDO6 only supports enable/disable for all states. * Voltage for LDO6 is fixed. */ .of_parse_cb = ldo6_parse_dt, }, }, { .desc = { /* SNVS LDO in data-sheet */ .name = "ldo7", .of_match = of_match_ptr("LDO7"), .regulators_node = of_match_ptr("regulators"), .id = BD71828_LDO_SNVS, .ops = &bd71828_ldo_ops, .type = REGULATOR_VOLTAGE, .linear_ranges = bd71828_ldo_volts, .n_linear_ranges = ARRAY_SIZE(bd71828_ldo_volts), .n_voltages = BD71828_LDO_VOLTS, .enable_reg = BD71828_REG_LDO7_EN, .enable_mask = BD71828_MASK_RUN_EN, .vsel_reg = BD71828_REG_LDO7_VOLT, .vsel_mask = BD71828_MASK_LDO_VOLT, .owner = THIS_MODULE, .of_parse_cb = buck_set_hw_dvs_levels, }, .dvs = { /* * LDO7 only supports single voltage for all states. * voltage can be individually enabled for each state * though => allow setting all states to support * enabling power rail on different states. */ .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR, .run_reg = BD71828_REG_LDO7_VOLT, .idle_reg = BD71828_REG_LDO7_VOLT, .suspend_reg = BD71828_REG_LDO7_VOLT, .lpsr_reg = BD71828_REG_LDO7_VOLT, .run_mask = BD71828_MASK_LDO_VOLT, .idle_mask = BD71828_MASK_LDO_VOLT, .suspend_mask = BD71828_MASK_LDO_VOLT, .lpsr_mask = BD71828_MASK_LDO_VOLT, .idle_on_mask = BD71828_MASK_IDLE_EN, .suspend_on_mask = BD71828_MASK_SUSP_EN, .lpsr_on_mask = BD71828_MASK_LPSR_EN, }, }, }; static int bd71828_probe(struct platform_device *pdev) { struct rohm_regmap_dev *bd71828; int i, j, ret; struct regulator_config config = { .dev = pdev->dev.parent, }; bd71828 = dev_get_drvdata(pdev->dev.parent); if (!bd71828) { dev_err(&pdev->dev, "No MFD driver data\n"); return -EINVAL; } config.regmap = bd71828->regmap; for (i = 0; i < ARRAY_SIZE(bd71828_rdata); i++) { struct regulator_dev *rdev; const struct bd71828_regulator_data *rd; rd = &bd71828_rdata[i]; rdev = devm_regulator_register(&pdev->dev, &rd->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s regulator\n", rd->desc.name); return PTR_ERR(rdev); } for (j = 0; j < rd->reg_init_amnt; j++) { ret = regmap_update_bits(bd71828->regmap, rd->reg_inits[j].reg, rd->reg_inits[j].mask, rd->reg_inits[j].val); if (ret) { dev_err(&pdev->dev, "regulator %s init failed\n", rd->desc.name); return ret; } } } return 0; } static struct platform_driver bd71828_regulator = { .driver = { .name = "bd71828-pmic" }, .probe = bd71828_probe, }; module_platform_driver(bd71828_regulator); MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); MODULE_DESCRIPTION("BD71828 voltage regulator driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:bd71828-pmic");