| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright (C) 2018 ROHM Semiconductors |
| // bd71837-regulator.c ROHM BD71837MWV 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-bd718x7.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/slab.h> |
| |
| struct bd71837_pmic { |
| struct regulator_desc descs[BD71837_REGULATOR_CNT]; |
| struct bd71837 *mfd; |
| struct platform_device *pdev; |
| struct regulator_dev *rdev[BD71837_REGULATOR_CNT]; |
| }; |
| |
| /* |
| * BUCK1/2/3/4 |
| * BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting |
| * 00: 10.00mV/usec 10mV 1uS |
| * 01: 5.00mV/usec 10mV 2uS |
| * 10: 2.50mV/usec 10mV 4uS |
| * 11: 1.25mV/usec 10mV 8uS |
| */ |
| static int bd71837_buck1234_set_ramp_delay(struct regulator_dev *rdev, |
| int ramp_delay) |
| { |
| struct bd71837_pmic *pmic = rdev_get_drvdata(rdev); |
| struct bd71837 *mfd = pmic->mfd; |
| int id = rdev->desc->id; |
| unsigned int ramp_value = BUCK_RAMPRATE_10P00MV; |
| |
| dev_dbg(&pmic->pdev->dev, "Buck[%d] Set Ramp = %d\n", id + 1, |
| ramp_delay); |
| switch (ramp_delay) { |
| case 1 ... 1250: |
| ramp_value = BUCK_RAMPRATE_1P25MV; |
| break; |
| case 1251 ... 2500: |
| ramp_value = BUCK_RAMPRATE_2P50MV; |
| break; |
| case 2501 ... 5000: |
| ramp_value = BUCK_RAMPRATE_5P00MV; |
| break; |
| case 5001 ... 10000: |
| ramp_value = BUCK_RAMPRATE_10P00MV; |
| break; |
| default: |
| ramp_value = BUCK_RAMPRATE_10P00MV; |
| dev_err(&pmic->pdev->dev, |
| "%s: ramp_delay: %d not supported, setting 10000mV//us\n", |
| rdev->desc->name, ramp_delay); |
| } |
| |
| return regmap_update_bits(mfd->regmap, BD71837_REG_BUCK1_CTRL + id, |
| BUCK_RAMPRATE_MASK, ramp_value << 6); |
| } |
| |
| /* Bucks 1 to 4 support DVS. PWM mode is used when voltage is changed. |
| * Bucks 5 to 8 and LDOs can use PFM and must be disabled when voltage |
| * is changed. Hence we return -EBUSY for these if voltage is changed |
| * when BUCK/LDO is enabled. |
| */ |
| static int bd71837_set_voltage_sel_restricted(struct regulator_dev *rdev, |
| unsigned int sel) |
| { |
| if (regulator_is_enabled_regmap(rdev)) |
| return -EBUSY; |
| |
| return regulator_set_voltage_sel_regmap(rdev, sel); |
| } |
| |
| static struct regulator_ops bd71837_ldo_regulator_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 = bd71837_set_voltage_sel_restricted, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| }; |
| |
| static struct regulator_ops bd71837_ldo_regulator_nolinear_ops = { |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .list_voltage = regulator_list_voltage_table, |
| .set_voltage_sel = bd71837_set_voltage_sel_restricted, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| }; |
| |
| static struct regulator_ops bd71837_buck_regulator_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 = bd71837_set_voltage_sel_restricted, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| }; |
| |
| static struct regulator_ops bd71837_buck_regulator_nolinear_ops = { |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .list_voltage = regulator_list_voltage_table, |
| .set_voltage_sel = bd71837_set_voltage_sel_restricted, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_time_sel = regulator_set_voltage_time_sel, |
| }; |
| |
| static struct regulator_ops bd71837_buck1234_regulator_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 = bd71837_buck1234_set_ramp_delay, |
| }; |
| |
| /* |
| * BUCK1/2/3/4 |
| * 0.70 to 1.30V (10mV step) |
| */ |
| static const struct regulator_linear_range bd71837_buck1234_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(700000, 0x00, 0x3C, 10000), |
| REGULATOR_LINEAR_RANGE(1300000, 0x3D, 0x3F, 0), |
| }; |
| |
| /* |
| * BUCK5 |
| * 0.9V to 1.35V () |
| */ |
| static const struct regulator_linear_range bd71837_buck5_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000), |
| REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000), |
| REGULATOR_LINEAR_RANGE(1200000, 0x06, 0x07, 150000), |
| }; |
| |
| /* |
| * BUCK6 |
| * 3.0V to 3.3V (step 100mV) |
| */ |
| static const struct regulator_linear_range bd71837_buck6_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000), |
| }; |
| |
| /* |
| * BUCK7 |
| * 000 = 1.605V |
| * 001 = 1.695V |
| * 010 = 1.755V |
| * 011 = 1.8V (Initial) |
| * 100 = 1.845V |
| * 101 = 1.905V |
| * 110 = 1.95V |
| * 111 = 1.995V |
| */ |
| static const unsigned int buck_7_volts[] = { |
| 1605000, 1695000, 1755000, 1800000, 1845000, 1905000, 1950000, 1995000 |
| }; |
| |
| /* |
| * BUCK8 |
| * 0.8V to 1.40V (step 10mV) |
| */ |
| static const struct regulator_linear_range bd71837_buck8_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(800000, 0x00, 0x3C, 10000), |
| REGULATOR_LINEAR_RANGE(1400000, 0x3D, 0x3F, 0), |
| }; |
| |
| /* |
| * LDO1 |
| * 3.0 to 3.3V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo1_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000), |
| }; |
| |
| /* |
| * LDO2 |
| * 0.8 or 0.9V |
| */ |
| static const unsigned int ldo_2_volts[] = { |
| 900000, 800000 |
| }; |
| |
| /* |
| * LDO3 |
| * 1.8 to 3.3V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo3_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), |
| }; |
| |
| /* |
| * LDO4 |
| * 0.9 to 1.8V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo4_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000), |
| REGULATOR_LINEAR_RANGE(1800000, 0x0A, 0x0F, 0), |
| }; |
| |
| /* |
| * LDO5 |
| * 1.8 to 3.3V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo5_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), |
| }; |
| |
| /* |
| * LDO6 |
| * 0.9 to 1.8V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo6_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000), |
| REGULATOR_LINEAR_RANGE(1800000, 0x0A, 0x0F, 0), |
| }; |
| |
| /* |
| * LDO7 |
| * 1.8 to 3.3V (100mV step) |
| */ |
| static const struct regulator_linear_range bd71837_ldo7_voltage_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), |
| }; |
| |
| static const struct regulator_desc bd71837_regulators[] = { |
| { |
| .name = "buck1", |
| .of_match = of_match_ptr("BUCK1"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK1, |
| .ops = &bd71837_buck1234_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK1_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck1234_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck1234_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK1_VOLT_RUN, |
| .vsel_mask = BUCK1_RUN_MASK, |
| .enable_reg = BD71837_REG_BUCK1_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck2", |
| .of_match = of_match_ptr("BUCK2"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK2, |
| .ops = &bd71837_buck1234_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK2_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck1234_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck1234_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK2_VOLT_RUN, |
| .vsel_mask = BUCK2_RUN_MASK, |
| .enable_reg = BD71837_REG_BUCK2_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck3", |
| .of_match = of_match_ptr("BUCK3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK3, |
| .ops = &bd71837_buck1234_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK3_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck1234_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck1234_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK3_VOLT_RUN, |
| .vsel_mask = BUCK3_RUN_MASK, |
| .enable_reg = BD71837_REG_BUCK3_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck4", |
| .of_match = of_match_ptr("BUCK4"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK4, |
| .ops = &bd71837_buck1234_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK4_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck1234_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck1234_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK4_VOLT_RUN, |
| .vsel_mask = BUCK4_RUN_MASK, |
| .enable_reg = BD71837_REG_BUCK4_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck5", |
| .of_match = of_match_ptr("BUCK5"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK5, |
| .ops = &bd71837_buck_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK5_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck5_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck5_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK5_VOLT, |
| .vsel_mask = BUCK5_MASK, |
| .enable_reg = BD71837_REG_BUCK5_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck6", |
| .of_match = of_match_ptr("BUCK6"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK6, |
| .ops = &bd71837_buck_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK6_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck6_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck6_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK6_VOLT, |
| .vsel_mask = BUCK6_MASK, |
| .enable_reg = BD71837_REG_BUCK6_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck7", |
| .of_match = of_match_ptr("BUCK7"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK7, |
| .ops = &bd71837_buck_regulator_nolinear_ops, |
| .type = REGULATOR_VOLTAGE, |
| .volt_table = &buck_7_volts[0], |
| .n_voltages = ARRAY_SIZE(buck_7_volts), |
| .vsel_reg = BD71837_REG_BUCK7_VOLT, |
| .vsel_mask = BUCK7_MASK, |
| .enable_reg = BD71837_REG_BUCK7_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "buck8", |
| .of_match = of_match_ptr("BUCK8"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_BUCK8, |
| .ops = &bd71837_buck_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_BUCK8_VOLTAGE_NUM, |
| .linear_ranges = bd71837_buck8_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_buck8_voltage_ranges), |
| .vsel_reg = BD71837_REG_BUCK8_VOLT, |
| .vsel_mask = BUCK8_MASK, |
| .enable_reg = BD71837_REG_BUCK8_CTRL, |
| .enable_mask = BD71837_BUCK_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo1", |
| .of_match = of_match_ptr("LDO1"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO1, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO1_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo1_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo1_voltage_ranges), |
| .vsel_reg = BD71837_REG_LDO1_VOLT, |
| .vsel_mask = LDO1_MASK, |
| .enable_reg = BD71837_REG_LDO1_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo2", |
| .of_match = of_match_ptr("LDO2"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO2, |
| .ops = &bd71837_ldo_regulator_nolinear_ops, |
| .type = REGULATOR_VOLTAGE, |
| .volt_table = &ldo_2_volts[0], |
| .vsel_reg = BD71837_REG_LDO2_VOLT, |
| .vsel_mask = LDO2_MASK, |
| .n_voltages = ARRAY_SIZE(ldo_2_volts), |
| .n_voltages = BD71837_LDO2_VOLTAGE_NUM, |
| .enable_reg = BD71837_REG_LDO2_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo3", |
| .of_match = of_match_ptr("LDO3"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO3, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO3_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo3_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo3_voltage_ranges), |
| .vsel_reg = BD71837_REG_LDO3_VOLT, |
| .vsel_mask = LDO3_MASK, |
| .enable_reg = BD71837_REG_LDO3_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo4", |
| .of_match = of_match_ptr("LDO4"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO4, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO4_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo4_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo4_voltage_ranges), |
| .vsel_reg = BD71837_REG_LDO4_VOLT, |
| .vsel_mask = LDO4_MASK, |
| .enable_reg = BD71837_REG_LDO4_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo5", |
| .of_match = of_match_ptr("LDO5"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO5, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO5_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo5_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo5_voltage_ranges), |
| /* LDO5 is supplied by buck6 */ |
| .supply_name = "buck6", |
| .vsel_reg = BD71837_REG_LDO5_VOLT, |
| .vsel_mask = LDO5_MASK, |
| .enable_reg = BD71837_REG_LDO5_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo6", |
| .of_match = of_match_ptr("LDO6"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO6, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO6_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo6_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo6_voltage_ranges), |
| /* LDO6 is supplied by buck7 */ |
| .supply_name = "buck7", |
| .vsel_reg = BD71837_REG_LDO6_VOLT, |
| .vsel_mask = LDO6_MASK, |
| .enable_reg = BD71837_REG_LDO6_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| { |
| .name = "ldo7", |
| .of_match = of_match_ptr("LDO7"), |
| .regulators_node = of_match_ptr("regulators"), |
| .id = BD71837_LDO7, |
| .ops = &bd71837_ldo_regulator_ops, |
| .type = REGULATOR_VOLTAGE, |
| .n_voltages = BD71837_LDO7_VOLTAGE_NUM, |
| .linear_ranges = bd71837_ldo7_voltage_ranges, |
| .n_linear_ranges = ARRAY_SIZE(bd71837_ldo7_voltage_ranges), |
| .vsel_reg = BD71837_REG_LDO7_VOLT, |
| .vsel_mask = LDO7_MASK, |
| .enable_reg = BD71837_REG_LDO7_VOLT, |
| .enable_mask = BD71837_LDO_EN, |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| struct reg_init { |
| unsigned int reg; |
| unsigned int mask; |
| }; |
| |
| static int bd71837_probe(struct platform_device *pdev) |
| { |
| struct bd71837_pmic *pmic; |
| struct regulator_config config = { 0 }; |
| struct reg_init pmic_regulator_inits[] = { |
| { |
| .reg = BD71837_REG_BUCK1_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK2_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK3_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK4_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK5_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK6_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK7_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_BUCK8_CTRL, |
| .mask = BD71837_BUCK_SEL, |
| }, { |
| .reg = BD71837_REG_LDO1_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO2_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO3_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO4_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO5_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO6_VOLT, |
| .mask = BD71837_LDO_SEL, |
| }, { |
| .reg = BD71837_REG_LDO7_VOLT, |
| .mask = BD71837_LDO_SEL, |
| } |
| }; |
| |
| int i, err; |
| |
| pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); |
| if (!pmic) |
| return -ENOMEM; |
| |
| memcpy(pmic->descs, bd71837_regulators, sizeof(pmic->descs)); |
| |
| pmic->pdev = pdev; |
| pmic->mfd = dev_get_drvdata(pdev->dev.parent); |
| |
| if (!pmic->mfd) { |
| dev_err(&pdev->dev, "No MFD driver data\n"); |
| err = -EINVAL; |
| goto err; |
| } |
| platform_set_drvdata(pdev, pmic); |
| |
| /* Register LOCK release */ |
| err = regmap_update_bits(pmic->mfd->regmap, BD71837_REG_REGLOCK, |
| (REGLOCK_PWRSEQ | REGLOCK_VREG), 0); |
| if (err) { |
| dev_err(&pmic->pdev->dev, "Failed to unlock PMIC (%d)\n", err); |
| goto err; |
| } else { |
| dev_dbg(&pmic->pdev->dev, "Unlocked lock register 0x%x\n", |
| BD71837_REG_REGLOCK); |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(pmic_regulator_inits); i++) { |
| |
| struct regulator_desc *desc; |
| struct regulator_dev *rdev; |
| |
| desc = &pmic->descs[i]; |
| |
| config.dev = pdev->dev.parent; |
| config.driver_data = pmic; |
| config.regmap = pmic->mfd->regmap; |
| |
| rdev = devm_regulator_register(&pdev->dev, desc, &config); |
| if (IS_ERR(rdev)) { |
| dev_err(pmic->mfd->dev, |
| "failed to register %s regulator\n", |
| desc->name); |
| err = PTR_ERR(rdev); |
| goto err; |
| } |
| /* Regulator register gets the regulator constraints and |
| * applies them (set_machine_constraints). This should have |
| * turned the control register(s) to correct values and we |
| * can now switch the control from PMIC state machine to the |
| * register interface |
| */ |
| err = regmap_update_bits(pmic->mfd->regmap, |
| pmic_regulator_inits[i].reg, |
| pmic_regulator_inits[i].mask, |
| 0xFFFFFFFF); |
| if (err) { |
| dev_err(&pmic->pdev->dev, |
| "Failed to write BUCK/LDO SEL bit for (%s)\n", |
| desc->name); |
| goto err; |
| } |
| |
| pmic->rdev[i] = rdev; |
| } |
| |
| err: |
| return err; |
| } |
| |
| static struct platform_driver bd71837_regulator = { |
| .driver = { |
| .name = "bd71837-pmic", |
| }, |
| .probe = bd71837_probe, |
| }; |
| |
| module_platform_driver(bd71837_regulator); |
| |
| MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); |
| MODULE_DESCRIPTION("BD71837 voltage regulator driver"); |
| MODULE_LICENSE("GPL"); |