290 строки
8.4 KiB
C
290 строки
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (C) 2018 ROHM Semiconductors
|
|
// bd70528-regulator.c ROHM BD70528MWV regulator driver
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mfd/rohm-bd70528.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.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 <linux/slab.h>
|
|
|
|
#define BUCK_RAMPRATE_250MV 0
|
|
#define BUCK_RAMPRATE_125MV 1
|
|
#define BUCK_RAMP_MAX 250
|
|
|
|
static const struct regulator_linear_range bd70528_buck1_volts[] = {
|
|
REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x1, 600000),
|
|
REGULATOR_LINEAR_RANGE(2750000, 0x2, 0xf, 50000),
|
|
};
|
|
static const struct regulator_linear_range bd70528_buck2_volts[] = {
|
|
REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x1, 300000),
|
|
REGULATOR_LINEAR_RANGE(1550000, 0x2, 0xd, 50000),
|
|
REGULATOR_LINEAR_RANGE(3000000, 0xe, 0xf, 300000),
|
|
};
|
|
static const struct regulator_linear_range bd70528_buck3_volts[] = {
|
|
REGULATOR_LINEAR_RANGE(800000, 0x00, 0xd, 50000),
|
|
REGULATOR_LINEAR_RANGE(1800000, 0xe, 0xf, 0),
|
|
};
|
|
|
|
/* All LDOs have same voltage ranges */
|
|
static const struct regulator_linear_range bd70528_ldo_volts[] = {
|
|
REGULATOR_LINEAR_RANGE(1650000, 0x0, 0x07, 50000),
|
|
REGULATOR_LINEAR_RANGE(2100000, 0x8, 0x0f, 100000),
|
|
REGULATOR_LINEAR_RANGE(2850000, 0x10, 0x19, 50000),
|
|
REGULATOR_LINEAR_RANGE(3300000, 0x19, 0x1f, 0),
|
|
};
|
|
|
|
/* Also both LEDs support same voltages */
|
|
static const unsigned int led_volts[] = {
|
|
20000, 30000
|
|
};
|
|
|
|
static int bd70528_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
|
|
{
|
|
if (ramp_delay > 0 && ramp_delay <= BUCK_RAMP_MAX) {
|
|
unsigned int ramp_value = BUCK_RAMPRATE_250MV;
|
|
|
|
if (ramp_delay <= 125)
|
|
ramp_value = BUCK_RAMPRATE_125MV;
|
|
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
|
|
BD70528_MASK_BUCK_RAMP,
|
|
ramp_value << BD70528_SIFT_BUCK_RAMP);
|
|
}
|
|
dev_err(&rdev->dev, "%s: ramp_delay: %d not supported\n",
|
|
rdev->desc->name, ramp_delay);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int bd70528_led_set_voltage_sel(struct regulator_dev *rdev,
|
|
unsigned int sel)
|
|
{
|
|
int ret;
|
|
|
|
ret = regulator_is_enabled_regmap(rdev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (ret == 0)
|
|
return regulator_set_voltage_sel_regmap(rdev, sel);
|
|
|
|
dev_err(&rdev->dev,
|
|
"LED voltage change not allowed when led is enabled\n");
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
static const struct regulator_ops bd70528_buck_ops = {
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = bd70528_set_ramp_delay,
|
|
};
|
|
|
|
static const struct regulator_ops bd70528_ldo_ops = {
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = bd70528_set_ramp_delay,
|
|
};
|
|
|
|
static const struct regulator_ops bd70528_led_ops = {
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.set_voltage_sel = bd70528_led_set_voltage_sel,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
};
|
|
|
|
static const struct regulator_desc bd70528_desc[] = {
|
|
{
|
|
.name = "buck1",
|
|
.of_match = of_match_ptr("BUCK1"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_BUCK1,
|
|
.ops = &bd70528_buck_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_buck1_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_buck1_volts),
|
|
.n_voltages = BD70528_BUCK_VOLTS,
|
|
.enable_reg = BD70528_REG_BUCK1_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_BUCK1_VOLT,
|
|
.vsel_mask = BD70528_MASK_BUCK_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "buck2",
|
|
.of_match = of_match_ptr("BUCK2"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_BUCK2,
|
|
.ops = &bd70528_buck_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_buck2_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_buck2_volts),
|
|
.n_voltages = BD70528_BUCK_VOLTS,
|
|
.enable_reg = BD70528_REG_BUCK2_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_BUCK2_VOLT,
|
|
.vsel_mask = BD70528_MASK_BUCK_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "buck3",
|
|
.of_match = of_match_ptr("BUCK3"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_BUCK3,
|
|
.ops = &bd70528_buck_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_buck3_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_buck3_volts),
|
|
.n_voltages = BD70528_BUCK_VOLTS,
|
|
.enable_reg = BD70528_REG_BUCK3_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_BUCK3_VOLT,
|
|
.vsel_mask = BD70528_MASK_BUCK_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ldo1",
|
|
.of_match = of_match_ptr("LDO1"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_LDO1,
|
|
.ops = &bd70528_ldo_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_ldo_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts),
|
|
.n_voltages = BD70528_LDO_VOLTS,
|
|
.enable_reg = BD70528_REG_LDO1_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_LDO1_VOLT,
|
|
.vsel_mask = BD70528_MASK_LDO_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ldo2",
|
|
.of_match = of_match_ptr("LDO2"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_LDO2,
|
|
.ops = &bd70528_ldo_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_ldo_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts),
|
|
.n_voltages = BD70528_LDO_VOLTS,
|
|
.enable_reg = BD70528_REG_LDO2_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_LDO2_VOLT,
|
|
.vsel_mask = BD70528_MASK_LDO_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ldo3",
|
|
.of_match = of_match_ptr("LDO3"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_LDO3,
|
|
.ops = &bd70528_ldo_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.linear_ranges = bd70528_ldo_volts,
|
|
.n_linear_ranges = ARRAY_SIZE(bd70528_ldo_volts),
|
|
.n_voltages = BD70528_LDO_VOLTS,
|
|
.enable_reg = BD70528_REG_LDO3_EN,
|
|
.enable_mask = BD70528_MASK_RUN_EN,
|
|
.vsel_reg = BD70528_REG_LDO3_VOLT,
|
|
.vsel_mask = BD70528_MASK_LDO_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ldo_led1",
|
|
.of_match = of_match_ptr("LDO_LED1"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_LED1,
|
|
.ops = &bd70528_led_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.volt_table = &led_volts[0],
|
|
.n_voltages = ARRAY_SIZE(led_volts),
|
|
.enable_reg = BD70528_REG_LED_EN,
|
|
.enable_mask = BD70528_MASK_LED1_EN,
|
|
.vsel_reg = BD70528_REG_LED_VOLT,
|
|
.vsel_mask = BD70528_MASK_LED1_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
{
|
|
.name = "ldo_led2",
|
|
.of_match = of_match_ptr("LDO_LED2"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.id = BD70528_LED2,
|
|
.ops = &bd70528_led_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.volt_table = &led_volts[0],
|
|
.n_voltages = ARRAY_SIZE(led_volts),
|
|
.enable_reg = BD70528_REG_LED_EN,
|
|
.enable_mask = BD70528_MASK_LED2_EN,
|
|
.vsel_reg = BD70528_REG_LED_VOLT,
|
|
.vsel_mask = BD70528_MASK_LED2_VOLT,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
|
|
};
|
|
|
|
static int bd70528_probe(struct platform_device *pdev)
|
|
{
|
|
struct rohm_regmap_dev *bd70528;
|
|
int i;
|
|
struct regulator_config config = {
|
|
.dev = pdev->dev.parent,
|
|
};
|
|
|
|
bd70528 = dev_get_drvdata(pdev->dev.parent);
|
|
if (!bd70528) {
|
|
dev_err(&pdev->dev, "No MFD driver data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
config.regmap = bd70528->regmap;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(bd70528_desc); i++) {
|
|
struct regulator_dev *rdev;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, &bd70528_desc[i],
|
|
&config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev,
|
|
"failed to register %s regulator\n",
|
|
bd70528_desc[i].name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver bd70528_regulator = {
|
|
.driver = {
|
|
.name = "bd70528-pmic"
|
|
},
|
|
.probe = bd70528_probe,
|
|
};
|
|
|
|
module_platform_driver(bd70528_regulator);
|
|
|
|
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
|
|
MODULE_DESCRIPTION("BD70528 voltage regulator driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:bd70528-pmic");
|