135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Regulator driver for Ky PMIC
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*
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* Copyright (c) 2023, KY Co., Ltd
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*
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*/
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/gpio/consumer.h>
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#include <linux/mfd/ky/ky_pmic.h>
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static struct regulator_match_data *match_data;
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static int ky_regulator_set_suspend_voltage(struct regulator_dev *rdev, int uV)
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{
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unsigned int reg;
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int sel = regulator_map_voltage_linear_range(rdev, uV, uV);
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if (sel < 0)
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return -EINVAL;
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/* means that we will disable this vol in suspend */
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if (uV == rdev->constraints->max_uV)
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/* BUCK will set 0xff to close the power */
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sel = rdev->desc->vsel_mask;
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else if (uV == rdev->constraints->min_uV)
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/* LDO will set zero to close the power */
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sel = 0;
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reg = rdev->desc->vsel_reg + match_data->sleep_reg_offset;
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return regmap_update_bits(rdev->regmap, reg,
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rdev->desc->vsel_mask, sel);
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}
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static const struct regulator_ops pmic_dcdc_ldo_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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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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.set_suspend_voltage = ky_regulator_set_suspend_voltage,
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};
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static const struct regulator_ops pmic_switch_ops = {
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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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};
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SPM8821_BUCK_LINER_RANGE;SPM8821_LDO_LINER_RANGE;SPM8821_REGULATOR_DESC;
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SPM8821_REGULATOR_MATCH_DATA;
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PM853_BUCK_LINER_RANGE1;PM853_BUCK_LINER_RANGE2;PM853_LDO_LINER_RANGE1;
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PM853_LDO_LINER_RANGE2;PM853_LDO_LINER_RANGE3;PM853_LDO_LINER_RANGE4;
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PM853_REGULATOR_DESC;PM853_REGULATOR_MATCH_DATA;
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SY8810L_BUCK_LINER_RANGE;SY8810L_REGULATOR_DESC;SY8810L_REGULATOR_MATCH_DATA;
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static const struct of_device_id ky_regulator_of_match[] = {
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{ .compatible = "pmic,regulator,spm8821", .data = (void *)&spm8821_regulator_match_data },
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{ .compatible = "pmic,regulator,pm853", .data = (void *)&pm853_regulator_match_data },
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{ .compatible = "pmic,regulator,sy8810l", .data = (void *)&sy8810l_regulator_match_data },
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{ },
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};
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MODULE_DEVICE_TABLE(of, ky_regulator_of_match);
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static int ky_regulator_probe(struct platform_device *pdev)
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{
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struct regulator_config config = {};
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struct ky_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
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struct i2c_client *client;
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const struct of_device_id *of_id;
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struct regulator_dev *regulator_dev;
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int i;
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of_id = of_match_device(ky_regulator_of_match, &pdev->dev);
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if (!of_id) {
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pr_err("Unable to match OF ID\n");
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return -ENODEV;
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}
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match_data = (struct regulator_match_data *)of_id->data;
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client = pmic->i2c;
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config.dev = &client->dev;
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config.regmap = pmic->regmap;
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if (strcmp(match_data->name, "pm853") == 0) {
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client = pmic->sub->power_page;
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config.dev = &pmic->i2c->dev;
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config.regmap = pmic->sub->power_regmap;
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}
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for (i = 0; i < match_data->nr_desc; ++i) {
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regulator_dev = devm_regulator_register(&pdev->dev,
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match_data->desc + i, &config);
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if (IS_ERR(regulator_dev)) {
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pr_err("failed to register %d regulator\n", i);
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return PTR_ERR(regulator_dev);
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}
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}
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return 0;
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}
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static struct platform_driver ky_regulator_driver = {
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.probe = ky_regulator_probe,
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.driver = {
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.name = "ky-regulator",
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.of_match_table = ky_regulator_of_match,
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},
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};
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static int ky_regulator_init(void)
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{
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return platform_driver_register(&ky_regulator_driver);
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}
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subsys_initcall(ky_regulator_init);
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MODULE_DESCRIPTION("regulator drivers for the Ky series PMICs");
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