| // 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/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 linear_range bd71828_buck1267_volts[] = { |
| REGULATOR_LINEAR_RANGE(500000, 0x00, 0xef, 6250), |
| REGULATOR_LINEAR_RANGE(2000000, 0xf0, 0xff, 0), |
| }; |
| |
| static const struct linear_range bd71828_buck3_volts[] = { |
| REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x0f, 50000), |
| REGULATOR_LINEAR_RANGE(2000000, 0x10, 0x1f, 0), |
| }; |
| |
| static const struct linear_range bd71828_buck4_volts[] = { |
| REGULATOR_LINEAR_RANGE(1000000, 0x00, 0x1f, 25000), |
| REGULATOR_LINEAR_RANGE(1800000, 0x20, 0x3f, 0), |
| }; |
| |
| static const struct linear_range bd71828_buck5_volts[] = { |
| REGULATOR_LINEAR_RANGE(2500000, 0x00, 0x0f, 50000), |
| REGULATOR_LINEAR_RANGE(3300000, 0x10, 0x1f, 0), |
| }; |
| |
| static const struct linear_range bd71828_ldo_volts[] = { |
| REGULATOR_LINEAR_RANGE(800000, 0x00, 0x31, 50000), |
| REGULATOR_LINEAR_RANGE(3300000, 0x32, 0x3f, 0), |
| }; |
| |
| static const unsigned int bd71828_ramp_delay[] = { 2500, 5000, 10000, 20000 }; |
| |
| 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 = regulator_set_ramp_delay_regmap, |
| }; |
| |
| 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, |
| .ramp_delay_table = bd71828_ramp_delay, |
| .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay), |
| .ramp_reg = BD71828_REG_BUCK1_MODE, |
| .ramp_mask = BD71828_MASK_RAMP_DELAY, |
| .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 voltage is same as SUSPEND voltage. Allow |
| * only enabling/disabling regulator for LPSR state |
| */ |
| .lpsr_on_mask = BD71828_MASK_LPSR_EN, |
| }, |
| .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, |
| .ramp_delay_table = bd71828_ramp_delay, |
| .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay), |
| .ramp_reg = BD71828_REG_BUCK2_MODE, |
| .ramp_mask = BD71828_MASK_RAMP_DELAY, |
| .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, |
| .run_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, |
| .run_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, |
| .run_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, |
| .ramp_delay_table = bd71828_ramp_delay, |
| .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay), |
| .ramp_reg = BD71828_REG_BUCK6_MODE, |
| .ramp_mask = BD71828_MASK_RAMP_DELAY, |
| .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, |
| .ramp_delay_table = bd71828_ramp_delay, |
| .n_ramp_values = ARRAY_SIZE(bd71828_ramp_delay), |
| .ramp_reg = BD71828_REG_BUCK7_MODE, |
| .ramp_mask = BD71828_MASK_RAMP_DELAY, |
| .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, |
| .run_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, |
| .run_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, |
| .run_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, |
| .run_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, |
| .run_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_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) |
| { |
| int i, j, ret; |
| struct regulator_config config = { |
| .dev = pdev->dev.parent, |
| }; |
| |
| config.regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| if (!config.regmap) |
| return -ENODEV; |
| |
| 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)) |
| return dev_err_probe(&pdev->dev, PTR_ERR(rdev), |
| "failed to register %s regulator\n", |
| rd->desc.name); |
| |
| for (j = 0; j < rd->reg_init_amnt; j++) { |
| ret = regmap_update_bits(config.regmap, |
| rd->reg_inits[j].reg, |
| rd->reg_inits[j].mask, |
| rd->reg_inits[j].val); |
| if (ret) |
| return dev_err_probe(&pdev->dev, ret, |
| "regulator %s init failed\n", |
| rd->desc.name); |
| } |
| } |
| return 0; |
| } |
| |
| static struct platform_driver bd71828_regulator = { |
| .driver = { |
| .name = "bd71828-pmic", |
| .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
| }, |
| .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"); |
