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Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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orangepi/linux-orangepi-5.10.y.git/trunk/drivers/regulator/bd70528-regulator.c
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// 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 linear_range bd70528_buck1_volts[] = {
<------>REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x1, 600000),
<------>REGULATOR_LINEAR_RANGE(2750000, 0x2, 0xf, 50000),
};
static const struct 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 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 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,
};
 
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");
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