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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Driver for TPS61050/61052 boost converters, typically used for white LEDs4 * or audio amplifiers.5 *6 * Copyright (C) 2011 ST-Ericsson SA7 * Written on behalf of Linaro for ST-Ericsson8 *9 * Author: Linus Walleij <linus.walleij@linaro.org>10 */11 12#include <linux/module.h>13#include <linux/kernel.h>14#include <linux/init.h>15#include <linux/err.h>16#include <linux/regmap.h>17#include <linux/platform_device.h>18#include <linux/regulator/driver.h>19#include <linux/mfd/core.h>20#include <linux/mfd/tps6105x.h>21 22static const unsigned int tps6105x_voltages[] = {23 4500000,24 5000000,25 5250000,26 5000000, /* There is an additional 5V */27};28 29static const struct regulator_ops tps6105x_regulator_ops = {30 .enable = regulator_enable_regmap,31 .disable = regulator_disable_regmap,32 .is_enabled = regulator_is_enabled_regmap,33 .get_voltage_sel = regulator_get_voltage_sel_regmap,34 .set_voltage_sel = regulator_set_voltage_sel_regmap,35 .list_voltage = regulator_list_voltage_table,36};37 38static const struct regulator_desc tps6105x_regulator_desc = {39 .name = "tps6105x-boost",40 .of_match = of_match_ptr("regulator"),41 .ops = &tps6105x_regulator_ops,42 .type = REGULATOR_VOLTAGE,43 .id = 0,44 .owner = THIS_MODULE,45 .n_voltages = ARRAY_SIZE(tps6105x_voltages),46 .volt_table = tps6105x_voltages,47 .vsel_reg = TPS6105X_REG_0,48 .vsel_mask = TPS6105X_REG0_VOLTAGE_MASK,49 .enable_reg = TPS6105X_REG_0,50 .enable_mask = TPS6105X_REG0_MODE_MASK,51 .enable_val = TPS6105X_REG0_MODE_VOLTAGE <<52 TPS6105X_REG0_MODE_SHIFT,53};54 55/*56 * Registers the chip as a voltage regulator57 */58static int tps6105x_regulator_probe(struct platform_device *pdev)59{60 struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);61 struct tps6105x_platform_data *pdata = tps6105x->pdata;62 struct regulator_config config = { };63 int ret;64 65 /* This instance is not set for regulator mode so bail out */66 if (pdata->mode != TPS6105X_MODE_VOLTAGE) {67 dev_info(&pdev->dev,68 "chip not in voltage mode mode, exit probe\n");69 return 0;70 }71 72 config.dev = &tps6105x->client->dev;73 config.init_data = pdata->regulator_data;74 config.driver_data = tps6105x;75 config.of_node = pdev->dev.parent->of_node;76 config.regmap = tps6105x->regmap;77 78 /* Register regulator with framework */79 tps6105x->regulator = devm_regulator_register(&pdev->dev,80 &tps6105x_regulator_desc,81 &config);82 if (IS_ERR(tps6105x->regulator)) {83 ret = PTR_ERR(tps6105x->regulator);84 dev_err(&tps6105x->client->dev,85 "failed to register regulator\n");86 return ret;87 }88 platform_set_drvdata(pdev, tps6105x);89 90 return 0;91}92 93static struct platform_driver tps6105x_regulator_driver = {94 .driver = {95 .name = "tps6105x-regulator",96 .probe_type = PROBE_PREFER_ASYNCHRONOUS,97 },98 .probe = tps6105x_regulator_probe,99};100 101static __init int tps6105x_regulator_init(void)102{103 return platform_driver_register(&tps6105x_regulator_driver);104}105subsys_initcall(tps6105x_regulator_init);106 107static __exit void tps6105x_regulator_exit(void)108{109 platform_driver_unregister(&tps6105x_regulator_driver);110}111module_exit(tps6105x_regulator_exit);112 113MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");114MODULE_DESCRIPTION("TPS6105x regulator driver");115MODULE_LICENSE("GPL v2");116MODULE_ALIAS("platform:tps6105x-regulator");117