mirror of https://gitee.com/openkylin/linux.git
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for TPS61050/61052 boost converters, typically used for white LEDs
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* or audio amplifiers.
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*
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* Copyright (C) 2011 ST-Ericsson SA
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* Written on behalf of Linaro for ST-Ericsson
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*
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* Author: Linus Walleij <linus.walleij@linaro.org>
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/regmap.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/mfd/core.h>
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#include <linux/mfd/tps6105x.h>
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static const unsigned int tps6105x_voltages[] = {
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4500000,
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5000000,
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5250000,
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5000000, /* There is an additional 5V */
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};
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static const struct regulator_ops tps6105x_regulator_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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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_table,
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};
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static const struct regulator_desc tps6105x_regulator_desc = {
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.name = "tps6105x-boost",
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.of_match = of_match_ptr("regulator"),
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.ops = &tps6105x_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = 0,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(tps6105x_voltages),
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.volt_table = tps6105x_voltages,
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.vsel_reg = TPS6105X_REG_0,
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.vsel_mask = TPS6105X_REG0_VOLTAGE_MASK,
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.enable_reg = TPS6105X_REG_0,
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.enable_mask = TPS6105X_REG0_MODE_MASK,
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.enable_val = TPS6105X_REG0_MODE_VOLTAGE <<
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TPS6105X_REG0_MODE_SHIFT,
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};
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/*
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* Registers the chip as a voltage regulator
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*/
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static int tps6105x_regulator_probe(struct platform_device *pdev)
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{
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struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);
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struct tps6105x_platform_data *pdata = tps6105x->pdata;
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struct regulator_config config = { };
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int ret;
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/* This instance is not set for regulator mode so bail out */
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if (pdata->mode != TPS6105X_MODE_VOLTAGE) {
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dev_info(&pdev->dev,
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"chip not in voltage mode mode, exit probe\n");
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return 0;
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}
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config.dev = &tps6105x->client->dev;
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config.init_data = pdata->regulator_data;
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config.driver_data = tps6105x;
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config.of_node = pdev->dev.parent->of_node;
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config.regmap = tps6105x->regmap;
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/* Register regulator with framework */
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tps6105x->regulator = devm_regulator_register(&pdev->dev,
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&tps6105x_regulator_desc,
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&config);
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if (IS_ERR(tps6105x->regulator)) {
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ret = PTR_ERR(tps6105x->regulator);
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dev_err(&tps6105x->client->dev,
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"failed to register regulator\n");
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return ret;
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}
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platform_set_drvdata(pdev, tps6105x);
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return 0;
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}
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static struct platform_driver tps6105x_regulator_driver = {
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.driver = {
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.name = "tps6105x-regulator",
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},
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.probe = tps6105x_regulator_probe,
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};
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static __init int tps6105x_regulator_init(void)
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{
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return platform_driver_register(&tps6105x_regulator_driver);
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}
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subsys_initcall(tps6105x_regulator_init);
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static __exit void tps6105x_regulator_exit(void)
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{
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platform_driver_unregister(&tps6105x_regulator_driver);
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}
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module_exit(tps6105x_regulator_exit);
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MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
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MODULE_DESCRIPTION("TPS6105x regulator driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:tps6105x-regulator");
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