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kernel_samsung_a34x-permissive/drivers/regulator/lp8788-ldo.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/*
* 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/consumer.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
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 gpio_desc *ena_gpiod;
};
/* DLDO 1, 2, 3, 9 voltage table */
static 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 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 const 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 = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.enable_time = lp8788_ldo_enable_time,
};
static const struct regulator_ops lp8788_ldo_voltage_fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.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,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_B,
.enable_mask = LP8788_EN_DLDO12_M,
.min_uV = 2500000,
},
};
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,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_B,
.enable_mask = LP8788_EN_ALDO2_M,
.min_uV = 2850000,
},
{
.name = "aldo3",
.id = ALDO3,
.ops = &lp8788_ldo_voltage_fixed_ops,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_B,
.enable_mask = LP8788_EN_ALDO3_M,
.min_uV = 2850000,
},
{
.name = "aldo4",
.id = ALDO4,
.ops = &lp8788_ldo_voltage_fixed_ops,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_B,
.enable_mask = LP8788_EN_ALDO4_M,
.min_uV = 2850000,
},
{
.name = "aldo5",
.id = ALDO5,
.ops = &lp8788_ldo_voltage_fixed_ops,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_C,
.enable_mask = LP8788_EN_ALDO5_M,
.min_uV = 2850000,
},
{
.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,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_C,
.enable_mask = LP8788_EN_ALDO8_M,
.min_uV = 2500000,
},
{
.name = "aldo9",
.id = ALDO9,
.ops = &lp8788_ldo_voltage_fixed_ops,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_C,
.enable_mask = LP8788_EN_ALDO9_M,
.min_uV = 2500000,
},
{
.name = "aldo10",
.id = ALDO10,
.ops = &lp8788_ldo_voltage_fixed_ops,
.n_voltages = 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.enable_reg = LP8788_EN_LDO_C,
.enable_mask = LP8788_EN_ALDO10_M,
.min_uV = 1100000,
},
};
static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
struct lp8788_ldo *ldo,
enum lp8788_ldo_id id)
{
struct lp8788 *lp = ldo->lp;
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,
};
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;
}
/* FIXME: check default mode for GPIO here: high or low? */
ldo->ena_gpiod = devm_gpiod_get_index_optional(&pdev->dev,
"enable",
enable_id,
GPIOD_OUT_HIGH);
if (IS_ERR(ldo->ena_gpiod))
return PTR_ERR(ldo->ena_gpiod);
/* if no GPIO for ldo pin, then set default enable mode */
if (!ldo->ena_gpiod)
goto set_default_ldo_enable_mode;
return 0;
set_default_ldo_enable_mode:
return lp8788_update_bits(lp, LP8788_EN_SEL, en_mask[enable_id], 0);
}
static 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(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
if (!ldo)
return -ENOMEM;
ldo->lp = lp;
ret = lp8788_config_ldo_enable_mode(pdev, ldo, id);
if (ret)
return ret;
if (ldo->ena_gpiod)
cfg.ena_gpiod = ldo->ena_gpiod;
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
cfg.driver_data = ldo;
cfg.regmap = lp->regmap;
rdev = devm_regulator_register(&pdev->dev, &lp8788_dldo_desc[id], &cfg);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&pdev->dev, "DLDO%d regulator register err = %d\n",
id + 1, ret);
return ret;
}
ldo->regulator = rdev;
platform_set_drvdata(pdev, ldo);
return 0;
}
static struct platform_driver lp8788_dldo_driver = {
.probe = lp8788_dldo_probe,
.driver = {
.name = LP8788_DEV_DLDO,
},
};
static 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(&pdev->dev, sizeof(struct lp8788_ldo), GFP_KERNEL);
if (!ldo)
return -ENOMEM;
ldo->lp = lp;
ret = lp8788_config_ldo_enable_mode(pdev, ldo, id + ALDO1);
if (ret)
return ret;
if (ldo->ena_gpiod)
cfg.ena_gpiod = ldo->ena_gpiod;
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
cfg.driver_data = ldo;
cfg.regmap = lp->regmap;
rdev = devm_regulator_register(&pdev->dev, &lp8788_aldo_desc[id], &cfg);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&pdev->dev, "ALDO%d regulator register err = %d\n",
id + 1, ret);
return ret;
}
ldo->regulator = rdev;
platform_set_drvdata(pdev, ldo);
return 0;
}
static struct platform_driver lp8788_aldo_driver = {
.probe = lp8788_aldo_probe,
.driver = {
.name = LP8788_DEV_ALDO,
},
};
static struct platform_driver * const drivers[] = {
&lp8788_dldo_driver,
&lp8788_aldo_driver,
};
static int __init lp8788_ldo_init(void)
{
return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
subsys_initcall(lp8788_ldo_init);
static void __exit lp8788_ldo_exit(void)
{
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
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");
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