// SPDX-License-Identifier: GPL-2.0
// Copyright (C) STMicroelectronics 2018
// Author: Pascal Paillet <[email protected]> for STMicroelectronics.
#include <linux/interrupt.h>
#include <linux/mfd/stpmic1.h>
#include <linux/module.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <dt-bindings/mfd/st,stpmic1.h>
/**
* struct stpmic1_regulator_cfg - this structure is used as driver data
* @desc: regulator framework description
* @mask_reset_reg: mask reset register address
* @mask_reset_mask: mask rank and mask reset register mask
* @icc_reg: icc register address
* @icc_mask: icc register mask
*/
struct stpmic1_regulator_cfg {
struct regulator_desc desc;
u8 mask_reset_reg;
u8 mask_reset_mask;
u8 icc_reg;
u8 icc_mask;
};
static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode);
static unsigned int stpmic1_get_mode(struct regulator_dev *rdev);
static int stpmic1_set_icc(struct regulator_dev *rdev, int lim, int severity,
bool enable);
static unsigned int stpmic1_map_mode(unsigned int mode);
enum {
STPMIC1_BUCK1 = 0,
STPMIC1_BUCK2 = 1,
STPMIC1_BUCK3 = 2,
STPMIC1_BUCK4 = 3,
STPMIC1_LDO1 = 4,
STPMIC1_LDO2 = 5,
STPMIC1_LDO3 = 6,
STPMIC1_LDO4 = 7,
STPMIC1_LDO5 = 8,
STPMIC1_LDO6 = 9,
STPMIC1_VREF_DDR = 10,
STPMIC1_BOOST = 11,
STPMIC1_VBUS_OTG = 12,
STPMIC1_SW_OUT = 13,
};
/* Enable time worst case is 5000mV/(2250uV/uS) */
#define PMIC_ENABLE_TIME_US 2200
/* Ramp delay worst case is (2250uV/uS) */
#define PMIC_RAMP_DELAY 2200
static const struct linear_range buck1_ranges[] = {
REGULATOR_LINEAR_RANGE(725000, 0, 4, 0),
REGULATOR_LINEAR_RANGE(725000, 5, 36, 25000),
REGULATOR_LINEAR_RANGE(1500000, 37, 63, 0),
};
static const struct linear_range buck2_ranges[] = {
REGULATOR_LINEAR_RANGE(1000000, 0, 17, 0),
REGULATOR_LINEAR_RANGE(1050000, 18, 19, 0),
REGULATOR_LINEAR_RANGE(1100000, 20, 21, 0),
REGULATOR_LINEAR_RANGE(1150000, 22, 23, 0),
REGULATOR_LINEAR_RANGE(1200000, 24, 25, 0),
REGULATOR_LINEAR_RANGE(1250000, 26, 27, 0),
REGULATOR_LINEAR_RANGE(1300000, 28, 29, 0),
REGULATOR_LINEAR_RANGE(1350000, 30, 31, 0),
REGULATOR_LINEAR_RANGE(1400000, 32, 33, 0),
REGULATOR_LINEAR_RANGE(1450000, 34, 35, 0),
REGULATOR_LINEAR_RANGE(1500000, 36, 63, 0),
};
static const struct linear_range buck3_ranges[] = {
REGULATOR_LINEAR_RANGE(1000000, 0, 19, 0),
REGULATOR_LINEAR_RANGE(1100000, 20, 23, 0),
REGULATOR_LINEAR_RANGE(1200000, 24, 27, 0),
REGULATOR_LINEAR_RANGE(1300000, 28, 31, 0),
REGULATOR_LINEAR_RANGE(1400000, 32, 35, 0),
REGULATOR_LINEAR_RANGE(1500000, 36, 55, 100000),
REGULATOR_LINEAR_RANGE(3400000, 56, 63, 0),
};
static const struct linear_range buck4_ranges[] = {
REGULATOR_LINEAR_RANGE(600000, 0, 27, 25000),
REGULATOR_LINEAR_RANGE(1300000, 28, 29, 0),
REGULATOR_LINEAR_RANGE(1350000, 30, 31, 0),
REGULATOR_LINEAR_RANGE(1400000, 32, 33, 0),
REGULATOR_LINEAR_RANGE(1450000, 34, 35, 0),
REGULATOR_LINEAR_RANGE(1500000, 36, 60, 100000),
REGULATOR_LINEAR_RANGE(3900000, 61, 63, 0),
};
static const struct linear_range ldo1_ranges[] = {
REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
REGULATOR_LINEAR_RANGE(3300000, 25, 31, 0),
};
static const struct linear_range ldo2_ranges[] = {
REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
REGULATOR_LINEAR_RANGE(3300000, 25, 30, 0),
};
static const struct linear_range ldo3_ranges[] = {
REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
REGULATOR_LINEAR_RANGE(1700000, 8, 24, 100000),
REGULATOR_LINEAR_RANGE(3300000, 25, 30, 0),
/* with index 31 LDO3 is in DDR mode */
REGULATOR_LINEAR_RANGE(500000, 31, 31, 0),
};
static const struct linear_range ldo5_ranges[] = {
REGULATOR_LINEAR_RANGE(1700000, 0, 7, 0),
REGULATOR_LINEAR_RANGE(1700000, 8, 30, 100000),
REGULATOR_LINEAR_RANGE(3900000, 31, 31, 0),
};
static const struct linear_range ldo6_ranges[] = {
REGULATOR_LINEAR_RANGE(900000, 0, 24, 100000),
REGULATOR_LINEAR_RANGE(3300000, 25, 31, 0),
};
static const struct regulator_ops stpmic1_ldo_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_over_current_protection = stpmic1_set_icc,
};
static const struct regulator_ops stpmic1_ldo3_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_iterate,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_bypass = regulator_get_bypass_regmap,
.set_bypass = regulator_set_bypass_regmap,
.set_over_current_protection = stpmic1_set_icc,
};
static const struct regulator_ops stpmic1_ldo4_fixed_regul_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.set_over_current_protection = stpmic1_set_icc,
};
static const struct regulator_ops stpmic1_buck_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_pull_down = regulator_set_pull_down_regmap,
.set_mode = stpmic1_set_mode,
.get_mode = stpmic1_get_mode,
.set_over_current_protection = stpmic1_set_icc,
};
static const struct regulator_ops stpmic1_vref_ddr_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
};
static const struct regulator_ops stpmic1_boost_regul_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.set_over_current_protection = stpmic1_set_icc,
};
static const struct regulator_ops stpmic1_switch_regul_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.set_over_current_protection = stpmic1_set_icc,
.set_active_discharge = regulator_set_active_discharge_regmap,
};
#define REG_LDO(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 32, \
.ops = &stpmic1_ldo_ops, \
.linear_ranges = base ## _ranges, \
.n_linear_ranges = ARRAY_SIZE(base ## _ranges), \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = ids##_ACTIVE_CR, \
.vsel_mask = LDO_VOLTAGE_MASK, \
.enable_reg = ids##_ACTIVE_CR, \
.enable_mask = LDO_ENABLE_MASK, \
.enable_val = 1, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.ramp_delay = PMIC_RAMP_DELAY, \
.supply_name = #base, \
}
#define REG_LDO3(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 32, \
.ops = &stpmic1_ldo3_ops, \
.linear_ranges = ldo3_ranges, \
.n_linear_ranges = ARRAY_SIZE(ldo3_ranges), \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = LDO3_ACTIVE_CR, \
.vsel_mask = LDO_VOLTAGE_MASK, \
.enable_reg = LDO3_ACTIVE_CR, \
.enable_mask = LDO_ENABLE_MASK, \
.enable_val = 1, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.ramp_delay = PMIC_RAMP_DELAY, \
.bypass_reg = LDO3_ACTIVE_CR, \
.bypass_mask = LDO_BYPASS_MASK, \
.bypass_val_on = LDO_BYPASS_MASK, \
.bypass_val_off = 0, \
.supply_name = #base, \
}
#define REG_LDO4(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 1, \
.ops = &stpmic1_ldo4_fixed_regul_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = 3300000, \
.fixed_uV = 3300000, \
.enable_reg = LDO4_ACTIVE_CR, \
.enable_mask = LDO_ENABLE_MASK, \
.enable_val = 1, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.ramp_delay = PMIC_RAMP_DELAY, \
.supply_name = #base, \
}
#define REG_BUCK(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.ops = &stpmic1_buck_ops, \
.n_voltages = 64, \
.linear_ranges = base ## _ranges, \
.n_linear_ranges = ARRAY_SIZE(base ## _ranges), \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = ids##_ACTIVE_CR, \
.vsel_mask = BUCK_VOLTAGE_MASK, \
.enable_reg = ids##_ACTIVE_CR, \
.enable_mask = BUCK_ENABLE_MASK, \
.enable_val = 1, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.ramp_delay = PMIC_RAMP_DELAY, \
.of_map_mode = stpmic1_map_mode, \
.pull_down_reg = ids##_PULL_DOWN_REG, \
.pull_down_mask = ids##_PULL_DOWN_MASK, \
.supply_name = #base, \
}
#define REG_VREF_DDR(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 1, \
.ops = &stpmic1_vref_ddr_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = 500000, \
.fixed_uV = 500000, \
.enable_reg = VREF_DDR_ACTIVE_CR, \
.enable_mask = BUCK_ENABLE_MASK, \
.enable_val = 1, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.supply_name = #base, \
}
#define REG_BOOST(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 1, \
.ops = &stpmic1_boost_regul_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = 0, \
.fixed_uV = 5000000, \
.enable_reg = BST_SW_CR, \
.enable_mask = BOOST_ENABLED, \
.enable_val = BOOST_ENABLED, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.supply_name = #base, \
}
#define REG_VBUS_OTG(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 1, \
.ops = &stpmic1_switch_regul_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = 0, \
.fixed_uV = 5000000, \
.enable_reg = BST_SW_CR, \
.enable_mask = USBSW_OTG_SWITCH_ENABLED, \
.enable_val = USBSW_OTG_SWITCH_ENABLED, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.supply_name = #base, \
.active_discharge_reg = BST_SW_CR, \
.active_discharge_mask = VBUS_OTG_DISCHARGE, \
.active_discharge_on = VBUS_OTG_DISCHARGE, \
}
#define REG_SW_OUT(ids, base) { \
.name = #ids, \
.id = STPMIC1_##ids, \
.n_voltages = 1, \
.ops = &stpmic1_switch_regul_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = 0, \
.fixed_uV = 5000000, \
.enable_reg = BST_SW_CR, \
.enable_mask = SWIN_SWOUT_ENABLED, \
.enable_val = SWIN_SWOUT_ENABLED, \
.disable_val = 0, \
.enable_time = PMIC_ENABLE_TIME_US, \
.supply_name = #base, \
.active_discharge_reg = BST_SW_CR, \
.active_discharge_mask = SW_OUT_DISCHARGE, \
.active_discharge_on = SW_OUT_DISCHARGE, \
}
static const struct stpmic1_regulator_cfg stpmic1_regulator_cfgs[] = {
[STPMIC1_BUCK1] = {
.desc = REG_BUCK(BUCK1, buck1),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(0),
.mask_reset_reg = BUCKS_MASK_RESET_CR,
.mask_reset_mask = BIT(0),
},
[STPMIC1_BUCK2] = {
.desc = REG_BUCK(BUCK2, buck2),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(1),
.mask_reset_reg = BUCKS_MASK_RESET_CR,
.mask_reset_mask = BIT(1),
},
[STPMIC1_BUCK3] = {
.desc = REG_BUCK(BUCK3, buck3),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(2),
.mask_reset_reg = BUCKS_MASK_RESET_CR,
.mask_reset_mask = BIT(2),
},
[STPMIC1_BUCK4] = {
.desc = REG_BUCK(BUCK4, buck4),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(3),
.mask_reset_reg = BUCKS_MASK_RESET_CR,
.mask_reset_mask = BIT(3),
},
[STPMIC1_LDO1] = {
.desc = REG_LDO(LDO1, ldo1),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(0),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(0),
},
[STPMIC1_LDO2] = {
.desc = REG_LDO(LDO2, ldo2),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(1),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(1),
},
[STPMIC1_LDO3] = {
.desc = REG_LDO3(LDO3, ldo3),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(2),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(2),
},
[STPMIC1_LDO4] = {
.desc = REG_LDO4(LDO4, ldo4),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(3),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(3),
},
[STPMIC1_LDO5] = {
.desc = REG_LDO(LDO5, ldo5),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(4),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(4),
},
[STPMIC1_LDO6] = {
.desc = REG_LDO(LDO6, ldo6),
.icc_reg = LDOS_ICCTO_CR,
.icc_mask = BIT(5),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(5),
},
[STPMIC1_VREF_DDR] = {
.desc = REG_VREF_DDR(VREF_DDR, vref_ddr),
.mask_reset_reg = LDOS_MASK_RESET_CR,
.mask_reset_mask = BIT(6),
},
[STPMIC1_BOOST] = {
.desc = REG_BOOST(BOOST, boost),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(6),
},
[STPMIC1_VBUS_OTG] = {
.desc = REG_VBUS_OTG(VBUS_OTG, pwr_sw1),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(4),
},
[STPMIC1_SW_OUT] = {
.desc = REG_SW_OUT(SW_OUT, pwr_sw2),
.icc_reg = BUCKS_ICCTO_CR,
.icc_mask = BIT(5),
},
};
static unsigned int stpmic1_map_mode(unsigned int mode)
{
switch (mode) {
case STPMIC1_BUCK_MODE_NORMAL:
return REGULATOR_MODE_NORMAL;
case STPMIC1_BUCK_MODE_LP:
return REGULATOR_MODE_STANDBY;
default:
return REGULATOR_MODE_INVALID;
}
}
static unsigned int stpmic1_get_mode(struct regulator_dev *rdev)
{
int value;
struct regmap *regmap = rdev_get_regmap(rdev);
regmap_read(regmap, rdev->desc->enable_reg, &value);
if (value & STPMIC1_BUCK_MODE_LP)
return REGULATOR_MODE_STANDBY;
return REGULATOR_MODE_NORMAL;
}
static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
int value;
struct regmap *regmap = rdev_get_regmap(rdev);
switch (mode) {
case REGULATOR_MODE_NORMAL:
value = STPMIC1_BUCK_MODE_NORMAL;
break;
case REGULATOR_MODE_STANDBY:
value = STPMIC1_BUCK_MODE_LP;
break;
default:
return -EINVAL;
}
return regmap_update_bits(regmap, rdev->desc->enable_reg,
STPMIC1_BUCK_MODE_LP, value);
}
static int stpmic1_set_icc(struct regulator_dev *rdev, int lim, int severity,
bool enable)
{
struct stpmic1_regulator_cfg *cfg = rdev_get_drvdata(rdev);
struct regmap *regmap = rdev_get_regmap(rdev);
/*
* The code seems like one bit in a register controls whether OCP is
* enabled. So we might be able to turn it off here is if that
* was requested. I won't support this because I don't have the HW.
* Feel free to try and implement if you have the HW and need kernel
* to disable this.
*
* Also, I don't know if limit can be configured or if we support
* error/warning instead of protect. So I just keep existing logic
* and assume no.
*/
if (lim || severity != REGULATOR_SEVERITY_PROT || !enable)
return -EINVAL;
/* enable switch off in case of over current */
return regmap_update_bits(regmap, cfg->icc_reg, cfg->icc_mask,
cfg->icc_mask);
}
static irqreturn_t stpmic1_curlim_irq_handler(int irq, void *data)
{
struct regulator_dev *rdev = (struct regulator_dev *)data;
/* Send an overcurrent notification */
regulator_notifier_call_chain(rdev,
REGULATOR_EVENT_OVER_CURRENT,
NULL);
return IRQ_HANDLED;
}
#define MATCH(_name, _id) \
[STPMIC1_##_id] = { \
.name = #_name, \
.desc = &stpmic1_regulator_cfgs[STPMIC1_##_id].desc, \
}
static struct of_regulator_match stpmic1_matches[] = {
MATCH(buck1, BUCK1),
MATCH(buck2, BUCK2),
MATCH(buck3, BUCK3),
MATCH(buck4, BUCK4),
MATCH(ldo1, LDO1),
MATCH(ldo2, LDO2),
MATCH(ldo3, LDO3),
MATCH(ldo4, LDO4),
MATCH(ldo5, LDO5),
MATCH(ldo6, LDO6),
MATCH(vref_ddr, VREF_DDR),
MATCH(boost, BOOST),
MATCH(pwr_sw1, VBUS_OTG),
MATCH(pwr_sw2, SW_OUT),
};
static int stpmic1_regulator_register(struct platform_device *pdev, int id,
struct of_regulator_match *match,
const struct stpmic1_regulator_cfg *cfg)
{
struct stpmic1 *pmic_dev = dev_get_drvdata(pdev->dev.parent);
struct regulator_dev *rdev;
struct regulator_config config = {};
int ret = 0;
int irq;
config.dev = &pdev->dev;
config.init_data = match->init_data;
config.of_node = match->of_node;
config.regmap = pmic_dev->regmap;
config.driver_data = (void *)cfg;
rdev = devm_regulator_register(&pdev->dev, &cfg->desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s regulator\n",
cfg->desc.name);
return PTR_ERR(rdev);
}
/* set mask reset */
if (of_property_read_bool(config.of_node, "st,mask-reset") &&
cfg->mask_reset_reg != 0) {
ret = regmap_update_bits(pmic_dev->regmap,
cfg->mask_reset_reg,
cfg->mask_reset_mask,
cfg->mask_reset_mask);
if (ret) {
dev_err(&pdev->dev, "set mask reset failed\n");
return ret;
}
}
/* setup an irq handler for over-current detection */
irq = of_irq_get(config.of_node, 0);
if (irq > 0) {
ret = devm_request_threaded_irq(&pdev->dev,
irq, NULL,
stpmic1_curlim_irq_handler,
IRQF_ONESHOT | IRQF_SHARED,
pdev->name, rdev);
if (ret) {
dev_err(&pdev->dev, "Request IRQ failed\n");
return ret;
}
}
return 0;
}
static int stpmic1_regulator_probe(struct platform_device *pdev)
{
int i, ret;
ret = of_regulator_match(&pdev->dev, pdev->dev.of_node, stpmic1_matches,
ARRAY_SIZE(stpmic1_matches));
if (ret < 0) {
dev_err(&pdev->dev,
"Error in PMIC regulator device tree node");
return ret;
}
for (i = 0; i < ARRAY_SIZE(stpmic1_regulator_cfgs); i++) {
ret = stpmic1_regulator_register(pdev, i, &stpmic1_matches[i],
&stpmic1_regulator_cfgs[i]);
if (ret < 0)
return ret;
}
dev_dbg(&pdev->dev, "stpmic1_regulator driver probed\n");
return 0;
}
static const struct of_device_id of_pmic_regulator_match[] = {
{ .compatible = "st,stpmic1-regulators" },
{ },
};
MODULE_DEVICE_TABLE(of, of_pmic_regulator_match);
static struct platform_driver stpmic1_regulator_driver = {
.driver = {
.name = "stpmic1-regulator",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
.of_match_table = of_match_ptr(of_pmic_regulator_match),
},
.probe = stpmic1_regulator_probe,
};
module_platform_driver(stpmic1_regulator_driver);
MODULE_DESCRIPTION("STPMIC1 PMIC voltage regulator driver");
MODULE_AUTHOR("Pascal Paillet <[email protected]>");
MODULE_LICENSE("GPL v2");
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