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259b93b21a
Probing of regulators can be a slow operation and can contribute to slower boot times. This is especially true if a regulator is turned on at probe time (with regulator-boot-on or regulator-always-on) and the regulator requires delays (off-on-time, ramp time, etc). While the overall kernel is not ready to switch to async probe by default, as per the discussion on the mailing lists [1] it is believed that the regulator subsystem is in good shape and we can move regulator drivers over wholesale. There is no way to just magically opt in all regulators (regulators are just normal drivers like platform_driver), so we set PROBE_PREFER_ASYNCHRONOUS for all regulators found in 'drivers/regulator' individually. Given the number of drivers touched and the impossibility to test this ahead of time, it wouldn't be shocking at all if this caused a regression for someone. If there is a regression caused by this patch, it's likely to be one of the cases talked about in [1]. As a "quick fix", drivers involved in the regression could be fixed by changing them to PROBE_FORCE_SYNCHRONOUS. That being said, the correct fix would be to directly fix the problem that caused the issue with async probe. The approach here follows a similar approach that was used for the mmc subsystem several years ago [2]. In fact, I ran nearly the same python script to auto-generate the changes. The only thing I changed was to search for "i2c_driver", "spmi_driver", and "spi_driver" in addition to "platform_driver". [1] https://lore.kernel.org/r/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk [2] https://lore.kernel.org/r/20200903232441.2694866-1-dianders@chromium.org/ Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230316125351.1.I2a4677392a38db5758dee0788b2cea5872562a82@changeid Signed-off-by: Mark Brown <broonie@kernel.org>
641 lines
16 KiB
C
641 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* TI LP8788 MFD - ldo regulator driver
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*
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* Copyright 2012 Texas Instruments
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*
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* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/gpio/consumer.h>
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#include <linux/mfd/lp8788.h>
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/* register address */
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#define LP8788_EN_LDO_A 0x0D /* DLDO 1 ~ 8 */
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#define LP8788_EN_LDO_B 0x0E /* DLDO 9 ~ 12, ALDO 1 ~ 4 */
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#define LP8788_EN_LDO_C 0x0F /* ALDO 5 ~ 10 */
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#define LP8788_EN_SEL 0x10
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#define LP8788_DLDO1_VOUT 0x2E
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#define LP8788_DLDO2_VOUT 0x2F
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#define LP8788_DLDO3_VOUT 0x30
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#define LP8788_DLDO4_VOUT 0x31
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#define LP8788_DLDO5_VOUT 0x32
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#define LP8788_DLDO6_VOUT 0x33
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#define LP8788_DLDO7_VOUT 0x34
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#define LP8788_DLDO8_VOUT 0x35
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#define LP8788_DLDO9_VOUT 0x36
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#define LP8788_DLDO10_VOUT 0x37
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#define LP8788_DLDO11_VOUT 0x38
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#define LP8788_DLDO12_VOUT 0x39
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#define LP8788_ALDO1_VOUT 0x3A
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#define LP8788_ALDO2_VOUT 0x3B
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#define LP8788_ALDO3_VOUT 0x3C
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#define LP8788_ALDO4_VOUT 0x3D
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#define LP8788_ALDO5_VOUT 0x3E
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#define LP8788_ALDO6_VOUT 0x3F
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#define LP8788_ALDO7_VOUT 0x40
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#define LP8788_ALDO8_VOUT 0x41
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#define LP8788_ALDO9_VOUT 0x42
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#define LP8788_ALDO10_VOUT 0x43
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#define LP8788_DLDO1_TIMESTEP 0x44
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/* mask/shift bits */
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#define LP8788_EN_DLDO1_M BIT(0) /* Addr 0Dh ~ 0Fh */
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#define LP8788_EN_DLDO2_M BIT(1)
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#define LP8788_EN_DLDO3_M BIT(2)
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#define LP8788_EN_DLDO4_M BIT(3)
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#define LP8788_EN_DLDO5_M BIT(4)
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#define LP8788_EN_DLDO6_M BIT(5)
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#define LP8788_EN_DLDO7_M BIT(6)
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#define LP8788_EN_DLDO8_M BIT(7)
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#define LP8788_EN_DLDO9_M BIT(0)
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#define LP8788_EN_DLDO10_M BIT(1)
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#define LP8788_EN_DLDO11_M BIT(2)
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#define LP8788_EN_DLDO12_M BIT(3)
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#define LP8788_EN_ALDO1_M BIT(4)
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#define LP8788_EN_ALDO2_M BIT(5)
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#define LP8788_EN_ALDO3_M BIT(6)
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#define LP8788_EN_ALDO4_M BIT(7)
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#define LP8788_EN_ALDO5_M BIT(0)
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#define LP8788_EN_ALDO6_M BIT(1)
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#define LP8788_EN_ALDO7_M BIT(2)
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#define LP8788_EN_ALDO8_M BIT(3)
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#define LP8788_EN_ALDO9_M BIT(4)
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#define LP8788_EN_ALDO10_M BIT(5)
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#define LP8788_EN_SEL_DLDO911_M BIT(0) /* Addr 10h */
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#define LP8788_EN_SEL_DLDO7_M BIT(1)
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#define LP8788_EN_SEL_ALDO7_M BIT(2)
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#define LP8788_EN_SEL_ALDO5_M BIT(3)
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#define LP8788_EN_SEL_ALDO234_M BIT(4)
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#define LP8788_EN_SEL_ALDO1_M BIT(5)
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#define LP8788_VOUT_5BIT_M 0x1F /* Addr 2Eh ~ 43h */
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#define LP8788_VOUT_4BIT_M 0x0F
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#define LP8788_VOUT_3BIT_M 0x07
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#define LP8788_VOUT_1BIT_M 0x01
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#define LP8788_STARTUP_TIME_M 0xF8 /* Addr 44h ~ 59h */
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#define LP8788_STARTUP_TIME_S 3
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#define ENABLE_TIME_USEC 32
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enum lp8788_ldo_id {
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DLDO1,
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DLDO2,
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DLDO3,
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DLDO4,
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DLDO5,
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DLDO6,
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DLDO7,
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DLDO8,
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DLDO9,
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DLDO10,
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DLDO11,
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DLDO12,
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ALDO1,
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ALDO2,
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ALDO3,
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ALDO4,
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ALDO5,
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ALDO6,
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ALDO7,
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ALDO8,
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ALDO9,
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ALDO10,
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};
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struct lp8788_ldo {
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struct lp8788 *lp;
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struct regulator_desc *desc;
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struct regulator_dev *regulator;
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struct gpio_desc *ena_gpiod;
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};
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/* DLDO 1, 2, 3, 9 voltage table */
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static const int lp8788_dldo1239_vtbl[] = {
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1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
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2600000, 2700000, 2800000, 2900000, 3000000, 2850000, 2850000, 2850000,
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2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
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2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000, 2850000,
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};
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/* DLDO 4 voltage table */
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static const int lp8788_dldo4_vtbl[] = { 1800000, 3000000 };
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/* DLDO 5, 7, 8 and ALDO 6 voltage table */
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static const int lp8788_dldo578_aldo6_vtbl[] = {
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1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
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2600000, 2700000, 2800000, 2900000, 3000000, 3000000, 3000000, 3000000,
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};
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/* DLDO 6 voltage table */
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static const int lp8788_dldo6_vtbl[] = {
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3000000, 3100000, 3200000, 3300000, 3400000, 3500000, 3600000, 3600000,
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};
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/* DLDO 10, 11 voltage table */
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static const int lp8788_dldo1011_vtbl[] = {
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1100000, 1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000,
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1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000, 1500000,
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};
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/* ALDO 1 voltage table */
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static const int lp8788_aldo1_vtbl[] = { 1800000, 2850000 };
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/* ALDO 7 voltage table */
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static const int lp8788_aldo7_vtbl[] = {
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1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000,
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};
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static int lp8788_ldo_enable_time(struct regulator_dev *rdev)
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{
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struct lp8788_ldo *ldo = rdev_get_drvdata(rdev);
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enum lp8788_ldo_id id = rdev_get_id(rdev);
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u8 val, addr = LP8788_DLDO1_TIMESTEP + id;
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if (lp8788_read_byte(ldo->lp, addr, &val))
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return -EINVAL;
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val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S;
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return ENABLE_TIME_USEC * val;
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}
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static const struct regulator_ops lp8788_ldo_voltage_table_ops = {
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.enable_time = lp8788_ldo_enable_time,
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};
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static const struct regulator_ops lp8788_ldo_voltage_fixed_ops = {
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.list_voltage = regulator_list_voltage_linear,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.enable_time = lp8788_ldo_enable_time,
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};
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static const struct regulator_desc lp8788_dldo_desc[] = {
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{
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.name = "dldo1",
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.id = DLDO1,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO1_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO1_M,
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},
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{
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.name = "dldo2",
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.id = DLDO2,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO2_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO2_M,
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},
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{
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.name = "dldo3",
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.id = DLDO3,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO3_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO3_M,
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},
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{
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.name = "dldo4",
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.id = DLDO4,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo4_vtbl),
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.volt_table = lp8788_dldo4_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO4_VOUT,
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.vsel_mask = LP8788_VOUT_1BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO4_M,
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},
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{
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.name = "dldo5",
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.id = DLDO5,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO5_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO5_M,
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},
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{
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.name = "dldo6",
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.id = DLDO6,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo6_vtbl),
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.volt_table = lp8788_dldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO6_VOUT,
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.vsel_mask = LP8788_VOUT_3BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO6_M,
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},
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{
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.name = "dldo7",
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.id = DLDO7,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO7_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO7_M,
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},
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{
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.name = "dldo8",
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.id = DLDO8,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo578_aldo6_vtbl),
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.volt_table = lp8788_dldo578_aldo6_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO8_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_A,
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.enable_mask = LP8788_EN_DLDO8_M,
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},
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{
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.name = "dldo9",
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.id = DLDO9,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1239_vtbl),
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.volt_table = lp8788_dldo1239_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO9_VOUT,
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.vsel_mask = LP8788_VOUT_5BIT_M,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_DLDO9_M,
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},
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{
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.name = "dldo10",
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.id = DLDO10,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
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.volt_table = lp8788_dldo1011_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO10_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_DLDO10_M,
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},
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{
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.name = "dldo11",
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.id = DLDO11,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_dldo1011_vtbl),
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.volt_table = lp8788_dldo1011_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_DLDO11_VOUT,
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.vsel_mask = LP8788_VOUT_4BIT_M,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_DLDO11_M,
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},
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{
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.name = "dldo12",
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.id = DLDO12,
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.ops = &lp8788_ldo_voltage_fixed_ops,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_DLDO12_M,
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.min_uV = 2500000,
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},
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};
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static const struct regulator_desc lp8788_aldo_desc[] = {
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{
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.name = "aldo1",
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.id = ALDO1,
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.ops = &lp8788_ldo_voltage_table_ops,
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.n_voltages = ARRAY_SIZE(lp8788_aldo1_vtbl),
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.volt_table = lp8788_aldo1_vtbl,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.vsel_reg = LP8788_ALDO1_VOUT,
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.vsel_mask = LP8788_VOUT_1BIT_M,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_ALDO1_M,
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},
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{
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.name = "aldo2",
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.id = ALDO2,
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.ops = &lp8788_ldo_voltage_fixed_ops,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_ALDO2_M,
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.min_uV = 2850000,
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},
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{
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.name = "aldo3",
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.id = ALDO3,
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.ops = &lp8788_ldo_voltage_fixed_ops,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = LP8788_EN_LDO_B,
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.enable_mask = LP8788_EN_ALDO3_M,
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.min_uV = 2850000,
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},
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{
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.name = "aldo4",
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.id = ALDO4,
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.ops = &lp8788_ldo_voltage_fixed_ops,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_reg = LP8788_EN_LDO_B,
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.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;
|
|
static const 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;
|
|
}
|
|
|
|
/*
|
|
* Do not use devm* here: the regulator core takes over the
|
|
* lifecycle management of the GPIO descriptor.
|
|
* FIXME: check default mode for GPIO here: high or low?
|
|
*/
|
|
ldo->ena_gpiod = gpiod_get_index_optional(&pdev->dev,
|
|
"enable",
|
|
enable_id,
|
|
GPIOD_OUT_HIGH |
|
|
GPIOD_FLAGS_BIT_NONEXCLUSIVE);
|
|
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,
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
|
},
|
|
};
|
|
|
|
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,
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
|
},
|
|
};
|
|
|
|
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");
|