| /* |
| * TI LP8788 MFD - ldo regulator driver |
| * |
| * Copyright 2012 Texas Instruments |
| * |
| * Author: Milo(Woogyom) Kim <milo.kim@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/gpio.h> |
| #include <linux/mfd/lp8788.h> |
| |
| /* register address */ |
| #define LP8788_EN_LDO_A 0x0D /* DLDO 1 ~ 8 */ |
| #define LP8788_EN_LDO_B 0x0E /* DLDO 9 ~ 12, ALDO 1 ~ 4 */ |
| #define LP8788_EN_LDO_C 0x0F /* ALDO 5 ~ 10 */ |
| #define LP8788_EN_SEL 0x10 |
| #define LP8788_DLDO1_VOUT 0x2E |
| #define LP8788_DLDO2_VOUT 0x2F |
| #define LP8788_DLDO3_VOUT 0x30 |
| #define LP8788_DLDO4_VOUT 0x31 |
| #define LP8788_DLDO5_VOUT 0x32 |
| #define LP8788_DLDO6_VOUT 0x33 |
| #define LP8788_DLDO7_VOUT 0x34 |
| #define LP8788_DLDO8_VOUT 0x35 |
| #define LP8788_DLDO9_VOUT 0x36 |
| #define LP8788_DLDO10_VOUT 0x37 |
| #define LP8788_DLDO11_VOUT 0x38 |
| #define LP8788_DLDO12_VOUT 0x39 |
| #define LP8788_ALDO1_VOUT 0x3A |
| #define LP8788_ALDO2_VOUT 0x3B |
| #define LP8788_ALDO3_VOUT 0x3C |
| #define LP8788_ALDO4_VOUT 0x3D |
| #define LP8788_ALDO5_VOUT 0x3E |
| #define LP8788_ALDO6_VOUT 0x3F |
| #define LP8788_ALDO7_VOUT 0x40 |
| #define LP8788_ALDO8_VOUT 0x41 |
| #define LP8788_ALDO9_VOUT 0x42 |
| #define LP8788_ALDO10_VOUT 0x43 |
| #define LP8788_DLDO1_TIMESTEP 0x44 |
| |
| /* mask/shift bits */ |
| #define LP8788_EN_DLDO1_M BIT(0) /* Addr 0Dh ~ 0Fh */ |
| #define LP8788_EN_DLDO2_M BIT(1) |
| #define LP8788_EN_DLDO3_M BIT(2) |
| #define LP8788_EN_DLDO4_M BIT(3) |
| #define LP8788_EN_DLDO5_M BIT(4) |
| #define LP8788_EN_DLDO6_M BIT(5) |
| #define LP8788_EN_DLDO7_M BIT(6) |
| #define LP8788_EN_DLDO8_M BIT(7) |
| #define LP8788_EN_DLDO9_M BIT(0) |
| #define LP8788_EN_DLDO10_M BIT(1) |
| #define LP8788_EN_DLDO11_M BIT(2) |
| #define LP8788_EN_DLDO12_M BIT(3) |
| #define LP8788_EN_ALDO1_M BIT(4) |
| #define LP8788_EN_ALDO2_M BIT(5) |
| #define LP8788_EN_ALDO3_M BIT(6) |
| #define LP8788_EN_ALDO4_M BIT(7) |
| #define LP8788_EN_ALDO5_M BIT(0) |
| #define LP8788_EN_ALDO6_M BIT(1) |
| #define LP8788_EN_ALDO7_M BIT(2) |
| #define LP8788_EN_ALDO8_M BIT(3) |
| #define LP8788_EN_ALDO9_M BIT(4) |
| #define LP8788_EN_ALDO10_M BIT(5) |
| #define LP8788_EN_SEL_DLDO911_M BIT(0) /* Addr 10h */ |
| #define LP8788_EN_SEL_DLDO7_M BIT(1) |
| #define LP8788_EN_SEL_ALDO7_M BIT(2) |
| #define LP8788_EN_SEL_ALDO5_M BIT(3) |
| #define LP8788_EN_SEL_ALDO234_M BIT(4) |
| #define LP8788_EN_SEL_ALDO1_M BIT(5) |
| #define LP8788_VOUT_5BIT_M 0x1F /* Addr 2Eh ~ 43h */ |
| #define LP8788_VOUT_4BIT_M 0x0F |
| #define LP8788_VOUT_3BIT_M 0x07 |
| #define LP8788_VOUT_1BIT_M 0x01 |
| #define LP8788_STARTUP_TIME_M 0xF8 /* Addr 44h ~ 59h */ |
| #define LP8788_STARTUP_TIME_S 3 |
| |
| #define ENABLE_TIME_USEC 32 |
| #define ENABLE GPIOF_OUT_INIT_HIGH |
| #define DISABLE GPIOF_OUT_INIT_LOW |
| |
| enum lp8788_enable_mode { |
| REGISTER, |
| EXTPIN, |
| }; |
| |
| enum lp8788_ldo_id { |
| DLDO1, |
| DLDO2, |
| DLDO3, |
| DLDO4, |
| DLDO5, |
| DLDO6, |
| DLDO7, |
| DLDO8, |
| DLDO9, |
| DLDO10, |
| DLDO11, |
| DLDO12, |
| ALDO1, |
| ALDO2, |
| ALDO3, |
| ALDO4, |
| ALDO5, |
| ALDO6, |
| ALDO7, |
| ALDO8, |
| ALDO9, |
| ALDO10, |
| }; |
| |
| struct lp8788_ldo { |
| struct lp8788 *lp; |
| struct regulator_desc *desc; |
| struct regulator_dev *regulator; |
| struct lp8788_ldo_enable_pin *en_pin; |
| }; |
| |
| /* DLDO 1, 2, 3, 9 voltage table */ |
| const int lp8788_dldo1239_vtbl[] = { |
| 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, |
| 2600000, 2700000, 2800000, 2900000, 3000000, 2850000, 2850000, 2850000, |
| 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, |
| 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, |
| }; |
| |
| /* DLDO 4 voltage table */ |
| static const int lp8788_dldo4_vtbl[] = { 1800000, 3000000 }; |
| |
| /* DLDO 5, 7, 8 and ALDO 6 voltage table */ |
| static const int lp8788_dldo578_aldo6_vtbl[] = { |
| 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, |
| 2600000, 2700000, 2800000, 2900000, 3000000, 3000000, 3000000, 3000000, |
| }; |
| |
| /* DLDO 6 voltage table */ |
| static const int lp8788_dldo6_vtbl[] = { |
| 3000000, 3100000, 3200000, 3300000, 3400000, 3500000, 3600000, 3600000, |
| }; |
| |
| /* DLDO 10, 11 voltage table */ |
| static const int lp8788_dldo1011_vtbl[] = { |
| 1100000, 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, |
| 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, |
| }; |
| |
| /* ALDO 1 voltage table */ |
| static const int lp8788_aldo1_vtbl[] = { 1800000, 2850000 }; |
| |
| /* ALDO 7 voltage table */ |
| static const int lp8788_aldo7_vtbl[] = { |
| 1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000, |
| }; |
| |
| static enum lp8788_ldo_id lp8788_dldo_id[] = { |
| DLDO1, |
| DLDO2, |
| DLDO3, |
| DLDO4, |
| DLDO5, |
| DLDO6, |
| DLDO7, |
| DLDO8, |
| DLDO9, |
| DLDO10, |
| DLDO11, |
| DLDO12, |
| }; |
| |
| static enum lp8788_ldo_id lp8788_aldo_id[] = { |
| ALDO1, |
| ALDO2, |
| ALDO3, |
| ALDO4, |
| ALDO5, |
| ALDO6, |
| ALDO7, |
| ALDO8, |
| ALDO9, |
| ALDO10, |
| }; |
| |
| /* DLDO 7, 9 and 11, ALDO 1 ~ 5 and 7 |
| : can be enabled either by external pin or by i2c register */ |
| static enum lp8788_enable_mode |
| lp8788_get_ldo_enable_mode(struct lp8788_ldo *ldo, enum lp8788_ldo_id id) |
| { |
| int ret; |
| u8 val, mask; |
| |
| ret = lp8788_read_byte(ldo->lp, LP8788_EN_SEL, &val); |
| if (ret) |
| return ret; |
| |
| switch (id) { |
| case DLDO7: |
| mask = LP8788_EN_SEL_DLDO7_M; |
| break; |
| case DLDO9: |
| case DLDO11: |
| mask = LP8788_EN_SEL_DLDO911_M; |
| break; |
| case ALDO1: |
| mask = LP8788_EN_SEL_ALDO1_M; |
| break; |
| case ALDO2 ... ALDO4: |
| mask = LP8788_EN_SEL_ALDO234_M; |
| break; |
| case ALDO5: |
| mask = LP8788_EN_SEL_ALDO5_M; |
| break; |
| case ALDO7: |
| mask = LP8788_EN_SEL_ALDO7_M; |
| break; |
| default: |
| return REGISTER; |
| } |
| |
| return val & mask ? EXTPIN : REGISTER; |
| } |
| |
| static int lp8788_ldo_ctrl_by_extern_pin(struct lp8788_ldo *ldo, int pinstate) |
| { |
| struct lp8788_ldo_enable_pin *pin = ldo->en_pin; |
| |
| if (!pin) |
| return -EINVAL; |
| |
| if (gpio_is_valid(pin->gpio)) |
| gpio_set_value(pin->gpio, pinstate); |
| |
| return 0; |
| } |
| |
| static int lp8788_ldo_is_enabled_by_extern_pin(struct lp8788_ldo *ldo) |
| { |
| struct lp8788_ldo_enable_pin *pin = ldo->en_pin; |
| |
| if (!pin) |
| return -EINVAL; |
| |
| return gpio_get_value(pin->gpio) ? 1 : 0; |
| } |
| |
| static int lp8788_ldo_enable(struct regulator_dev *rdev) |
| { |
| struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); |
| enum lp8788_ldo_id id = rdev_get_id(rdev); |
| enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); |
| |
| switch (mode) { |
| case EXTPIN: |
| return lp8788_ldo_ctrl_by_extern_pin(ldo, ENABLE); |
| case REGISTER: |
| return regulator_enable_regmap(rdev); |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int lp8788_ldo_disable(struct regulator_dev *rdev) |
| { |
| struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); |
| enum lp8788_ldo_id id = rdev_get_id(rdev); |
| enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); |
| |
| switch (mode) { |
| case EXTPIN: |
| return lp8788_ldo_ctrl_by_extern_pin(ldo, DISABLE); |
| case REGISTER: |
| return regulator_disable_regmap(rdev); |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int lp8788_ldo_is_enabled(struct regulator_dev *rdev) |
| { |
| struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); |
| enum lp8788_ldo_id id = rdev_get_id(rdev); |
| enum lp8788_enable_mode mode = lp8788_get_ldo_enable_mode(ldo, id); |
| |
| switch (mode) { |
| case EXTPIN: |
| return lp8788_ldo_is_enabled_by_extern_pin(ldo); |
| case REGISTER: |
| return regulator_is_enabled_regmap(rdev); |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int lp8788_ldo_enable_time(struct regulator_dev *rdev) |
| { |
| struct lp8788_ldo *ldo = rdev_get_drvdata(rdev); |
| enum lp8788_ldo_id id = rdev_get_id(rdev); |
| u8 val, addr = LP8788_DLDO1_TIMESTEP + id; |
| |
| if (lp8788_read_byte(ldo->lp, addr, &val)) |
| return -EINVAL; |
| |
| val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S; |
| |
| return ENABLE_TIME_USEC * val; |
| } |
| |
| static int lp8788_ldo_fixed_get_voltage(struct regulator_dev *rdev) |
| { |
| enum lp8788_ldo_id id = rdev_get_id(rdev); |
| |
| switch (id) { |
| case ALDO2 ... ALDO5: |
| return 2850000; |
| case DLDO12: |
| case ALDO8 ... ALDO9: |
| return 2500000; |
| case ALDO10: |
| return 1100000; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static struct regulator_ops lp8788_ldo_voltage_table_ops = { |
| .list_voltage = regulator_list_voltage_table, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .enable = lp8788_ldo_enable, |
| .disable = lp8788_ldo_disable, |
| .is_enabled = lp8788_ldo_is_enabled, |
| .enable_time = lp8788_ldo_enable_time, |
| }; |
| |
| static struct regulator_ops lp8788_ldo_voltage_fixed_ops = { |
| .get_voltage = lp8788_ldo_fixed_get_voltage, |
| .enable = lp8788_ldo_enable, |
| .disable = lp8788_ldo_disable, |
| .is_enabled = lp8788_ldo_is_enabled, |
| .enable_time = lp8788_ldo_enable_time, |
| }; |
| |
| static struct regulator_desc lp8788_dldo_desc[] = { |
| { |
| .name = "dldo1", |
| .id = DLDO1, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), |
| .volt_table = lp8788_dldo1239_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO1_VOUT, |
| .vsel_mask = LP8788_VOUT_5BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO1_M, |
| }, |
| { |
| .name = "dldo2", |
| .id = DLDO2, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), |
| .volt_table = lp8788_dldo1239_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO2_VOUT, |
| .vsel_mask = LP8788_VOUT_5BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO2_M, |
| }, |
| { |
| .name = "dldo3", |
| .id = DLDO3, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), |
| .volt_table = lp8788_dldo1239_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO3_VOUT, |
| .vsel_mask = LP8788_VOUT_5BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO3_M, |
| }, |
| { |
| .name = "dldo4", |
| .id = DLDO4, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo4_vtbl), |
| .volt_table = lp8788_dldo4_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO4_VOUT, |
| .vsel_mask = LP8788_VOUT_1BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO4_M, |
| }, |
| { |
| .name = "dldo5", |
| .id = DLDO5, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), |
| .volt_table = lp8788_dldo578_aldo6_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO5_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO5_M, |
| }, |
| { |
| .name = "dldo6", |
| .id = DLDO6, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo6_vtbl), |
| .volt_table = lp8788_dldo6_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO6_VOUT, |
| .vsel_mask = LP8788_VOUT_3BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO6_M, |
| }, |
| { |
| .name = "dldo7", |
| .id = DLDO7, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), |
| .volt_table = lp8788_dldo578_aldo6_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO7_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO7_M, |
| }, |
| { |
| .name = "dldo8", |
| .id = DLDO8, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), |
| .volt_table = lp8788_dldo578_aldo6_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO8_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_A, |
| .enable_mask = LP8788_EN_DLDO8_M, |
| }, |
| { |
| .name = "dldo9", |
| .id = DLDO9, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl), |
| .volt_table = lp8788_dldo1239_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO9_VOUT, |
| .vsel_mask = LP8788_VOUT_5BIT_M, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_DLDO9_M, |
| }, |
| { |
| .name = "dldo10", |
| .id = DLDO10, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl), |
| .volt_table = lp8788_dldo1011_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO10_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_DLDO10_M, |
| }, |
| { |
| .name = "dldo11", |
| .id = DLDO11, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl), |
| .volt_table = lp8788_dldo1011_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_DLDO11_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_DLDO11_M, |
| }, |
| { |
| .name = "dldo12", |
| .id = DLDO12, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_DLDO12_M, |
| }, |
| }; |
| |
| static struct regulator_desc lp8788_aldo_desc[] = { |
| { |
| .name = "aldo1", |
| .id = ALDO1, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_aldo1_vtbl), |
| .volt_table = lp8788_aldo1_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_ALDO1_VOUT, |
| .vsel_mask = LP8788_VOUT_1BIT_M, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_ALDO1_M, |
| }, |
| { |
| .name = "aldo2", |
| .id = ALDO2, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_ALDO2_M, |
| }, |
| { |
| .name = "aldo3", |
| .id = ALDO3, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_ALDO3_M, |
| }, |
| { |
| .name = "aldo4", |
| .id = ALDO4, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_B, |
| .enable_mask = LP8788_EN_ALDO4_M, |
| }, |
| { |
| .name = "aldo5", |
| .id = ALDO5, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO5_M, |
| }, |
| { |
| .name = "aldo6", |
| .id = ALDO6, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl), |
| .volt_table = lp8788_dldo578_aldo6_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_ALDO6_VOUT, |
| .vsel_mask = LP8788_VOUT_4BIT_M, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO6_M, |
| }, |
| { |
| .name = "aldo7", |
| .id = ALDO7, |
| .ops = &lp8788_ldo_voltage_table_ops, |
| .n_voltages = ARRAY_SIZE(lp8788_aldo7_vtbl), |
| .volt_table = lp8788_aldo7_vtbl, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .vsel_reg = LP8788_ALDO7_VOUT, |
| .vsel_mask = LP8788_VOUT_3BIT_M, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO7_M, |
| }, |
| { |
| .name = "aldo8", |
| .id = ALDO8, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO8_M, |
| }, |
| { |
| .name = "aldo9", |
| .id = ALDO9, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO9_M, |
| }, |
| { |
| .name = "aldo10", |
| .id = ALDO10, |
| .ops = &lp8788_ldo_voltage_fixed_ops, |
| .type = REGULATOR_VOLTAGE, |
| .owner = THIS_MODULE, |
| .enable_reg = LP8788_EN_LDO_C, |
| .enable_mask = LP8788_EN_ALDO10_M, |
| }, |
| }; |
| |
| static int lp8788_gpio_request_ldo_en(struct lp8788_ldo *ldo, |
| enum lp8788_ext_ldo_en_id id) |
| { |
| struct device *dev = ldo->lp->dev; |
| struct lp8788_ldo_enable_pin *pin = ldo->en_pin; |
| int ret, gpio, pinstate; |
| char *name[] = { |
| [EN_ALDO1] = "LP8788_EN_ALDO1", |
| [EN_ALDO234] = "LP8788_EN_ALDO234", |
| [EN_ALDO5] = "LP8788_EN_ALDO5", |
| [EN_ALDO7] = "LP8788_EN_ALDO7", |
| [EN_DLDO7] = "LP8788_EN_DLDO7", |
| [EN_DLDO911] = "LP8788_EN_DLDO911", |
| }; |
| |
| gpio = pin->gpio; |
| if (!gpio_is_valid(gpio)) { |
| dev_err(dev, "invalid gpio: %d\n", gpio); |
| return -EINVAL; |
| } |
| |
| pinstate = pin->init_state; |
| ret = devm_gpio_request_one(dev, gpio, pinstate, name[id]); |
| if (ret == -EBUSY) { |
| dev_warn(dev, "gpio%d already used\n", gpio); |
| return 0; |
| } |
| |
| return ret; |
| } |
| |
| static int lp8788_config_ldo_enable_mode(struct lp8788_ldo *ldo, |
| enum lp8788_ldo_id id) |
| { |
| int ret; |
| struct lp8788 *lp = ldo->lp; |
| struct lp8788_platform_data *pdata = lp->pdata; |
| enum lp8788_ext_ldo_en_id enable_id; |
| u8 en_mask[] = { |
| [EN_ALDO1] = LP8788_EN_SEL_ALDO1_M, |
| [EN_ALDO234] = LP8788_EN_SEL_ALDO234_M, |
| [EN_ALDO5] = LP8788_EN_SEL_ALDO5_M, |
| [EN_ALDO7] = LP8788_EN_SEL_ALDO7_M, |
| [EN_DLDO7] = LP8788_EN_SEL_DLDO7_M, |
| [EN_DLDO911] = LP8788_EN_SEL_DLDO911_M, |
| }; |
| u8 val[] = { |
| [EN_ALDO1] = 0 << 5, |
| [EN_ALDO234] = 0 << 4, |
| [EN_ALDO5] = 0 << 3, |
| [EN_ALDO7] = 0 << 2, |
| [EN_DLDO7] = 0 << 1, |
| [EN_DLDO911] = 0 << 0, |
| }; |
| |
| switch (id) { |
| case DLDO7: |
| enable_id = EN_DLDO7; |
| break; |
| case DLDO9: |
| case DLDO11: |
| enable_id = EN_DLDO911; |
| break; |
| case ALDO1: |
| enable_id = EN_ALDO1; |
| break; |
| case ALDO2 ... ALDO4: |
| enable_id = EN_ALDO234; |
| break; |
| case ALDO5: |
| enable_id = EN_ALDO5; |
| break; |
| case ALDO7: |
| enable_id = EN_ALDO7; |
| break; |
| default: |
| return 0; |
| } |
| |
| /* if no platform data for ldo pin, then set default enable mode */ |
| if (!pdata || !pdata->ldo_pin || !pdata->ldo_pin[enable_id]) |
| goto set_default_ldo_enable_mode; |
| |
| ldo->en_pin = pdata->ldo_pin[enable_id]; |
| |
| ret = lp8788_gpio_request_ldo_en(ldo, enable_id); |
| if (ret) |
| goto set_default_ldo_enable_mode; |
| |
| return ret; |
| |
| set_default_ldo_enable_mode: |
| return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id], |
| val[enable_id]); |
| } |
| |
| static __devinit int lp8788_dldo_probe(struct platform_device *pdev) |
| { |
| struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent); |
| int id = pdev->id; |
| struct lp8788_ldo *ldo; |
| struct regulator_config cfg = { }; |
| struct regulator_dev *rdev; |
| int ret; |
| |
| ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); |
| if (!ldo) |
| return -ENOMEM; |
| |
| ldo->lp = lp; |
| ret = lp8788_config_ldo_enable_mode(ldo, lp8788_dldo_id[id]); |
| if (ret) |
| return ret; |
| |
| cfg.dev = lp->dev; |
| cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL; |
| cfg.driver_data = ldo; |
| cfg.regmap = lp->regmap; |
| |
| rdev = regulator_register(&lp8788_dldo_desc[id], &cfg); |
| if (IS_ERR(rdev)) { |
| ret = PTR_ERR(rdev); |
| dev_err(lp->dev, "DLDO%d regulator register err = %d\n", |
| id + 1, ret); |
| return ret; |
| } |
| |
| ldo->regulator = rdev; |
| platform_set_drvdata(pdev, ldo); |
| |
| return 0; |
| } |
| |
| static int __devexit lp8788_dldo_remove(struct platform_device *pdev) |
| { |
| struct lp8788_ldo *ldo = platform_get_drvdata(pdev); |
| |
| platform_set_drvdata(pdev, NULL); |
| regulator_unregister(ldo->regulator); |
| |
| return 0; |
| } |
| |
| static struct platform_driver lp8788_dldo_driver = { |
| .probe = lp8788_dldo_probe, |
| .remove = __devexit_p(lp8788_dldo_remove), |
| .driver = { |
| .name = LP8788_DEV_DLDO, |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| static __devinit int lp8788_aldo_probe(struct platform_device *pdev) |
| { |
| struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent); |
| int id = pdev->id; |
| struct lp8788_ldo *ldo; |
| struct regulator_config cfg = { }; |
| struct regulator_dev *rdev; |
| int ret; |
| |
| ldo = devm_kzalloc(lp->dev, sizeof(struct lp8788_ldo), GFP_KERNEL); |
| if (!ldo) |
| return -ENOMEM; |
| |
| ldo->lp = lp; |
| ret = lp8788_config_ldo_enable_mode(ldo, lp8788_aldo_id[id]); |
| if (ret) |
| return ret; |
| |
| cfg.dev = lp->dev; |
| cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL; |
| cfg.driver_data = ldo; |
| cfg.regmap = lp->regmap; |
| |
| rdev = regulator_register(&lp8788_aldo_desc[id], &cfg); |
| if (IS_ERR(rdev)) { |
| ret = PTR_ERR(rdev); |
| dev_err(lp->dev, "ALDO%d regulator register err = %d\n", |
| id + 1, ret); |
| return ret; |
| } |
| |
| ldo->regulator = rdev; |
| platform_set_drvdata(pdev, ldo); |
| |
| return 0; |
| } |
| |
| static int __devexit lp8788_aldo_remove(struct platform_device *pdev) |
| { |
| struct lp8788_ldo *ldo = platform_get_drvdata(pdev); |
| |
| platform_set_drvdata(pdev, NULL); |
| regulator_unregister(ldo->regulator); |
| |
| return 0; |
| } |
| |
| static struct platform_driver lp8788_aldo_driver = { |
| .probe = lp8788_aldo_probe, |
| .remove = __devexit_p(lp8788_aldo_remove), |
| .driver = { |
| .name = LP8788_DEV_ALDO, |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| static int __init lp8788_ldo_init(void) |
| { |
| int ret; |
| |
| ret = platform_driver_register(&lp8788_dldo_driver); |
| if (ret) |
| return ret; |
| |
| return platform_driver_register(&lp8788_aldo_driver); |
| } |
| subsys_initcall(lp8788_ldo_init); |
| |
| static void __exit lp8788_ldo_exit(void) |
| { |
| platform_driver_unregister(&lp8788_aldo_driver); |
| platform_driver_unregister(&lp8788_dldo_driver); |
| } |
| module_exit(lp8788_ldo_exit); |
| |
| MODULE_DESCRIPTION("TI LP8788 LDO Driver"); |
| MODULE_AUTHOR("Milo Kim"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:lp8788-dldo"); |
| MODULE_ALIAS("platform:lp8788-aldo"); |