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kernel-fxtec-pro1x/drivers/regulator/lp8788-ldo.c
Linus Walleij 2468f0d515
regulator: lp8788-ldo: Pass descriptor instead of GPIO number 
Instead of passing a global GPIO number, pass a descriptor looked
up with the standard devm_gpiod_get_index_optional() call.

This driver has supported passing a LDO enable GPIO for years,
yet this facility has never been put to use in the upstream kernel.
If someone desires to put in place GPIO control for the LDOs,
this can be done by adding a GPIO descriptor table in the MFD
nexus in drivers/mfd/lp8788.c for the LDO device when spawning the
MFD children, or using a board file.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-24 16:50:31 +01:00

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/*
* 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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