/* * Driver for TPS61050/61052 boost converters, typically used for white LEDs * or audio amplifiers. * * Copyright (C) 2011 ST-Ericsson SA * Written on behalf of Linaro for ST-Ericsson * * Author: Linus Walleij <linus.walleij@linaro.org> * * License terms: GNU General Public License (GPL) version 2 */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/err.h> #include <linux/regmap.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/mfd/core.h> #include <linux/mfd/tps6105x.h> static const unsigned int tps6105x_voltages[] = { 4500000, 5000000, 5250000, 5000000, /* There is an additional 5V */ }; static struct regulator_ops tps6105x_regulator_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_table, }; static const struct regulator_desc tps6105x_regulator_desc = { .name = "tps6105x-boost", .ops = &tps6105x_regulator_ops, .type = REGULATOR_VOLTAGE, .id = 0, .owner = THIS_MODULE, .n_voltages = ARRAY_SIZE(tps6105x_voltages), .volt_table = tps6105x_voltages, .vsel_reg = TPS6105X_REG_0, .vsel_mask = TPS6105X_REG0_VOLTAGE_MASK, .enable_reg = TPS6105X_REG_0, .enable_mask = TPS6105X_REG0_MODE_MASK, .enable_val = TPS6105X_REG0_MODE_VOLTAGE << TPS6105X_REG0_MODE_SHIFT, }; /* * Registers the chip as a voltage regulator */ static int tps6105x_regulator_probe(struct platform_device *pdev) { struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev); struct tps6105x_platform_data *pdata = tps6105x->pdata; struct regulator_config config = { }; int ret; /* This instance is not set for regulator mode so bail out */ if (pdata->mode != TPS6105X_MODE_VOLTAGE) { dev_info(&pdev->dev, "chip not in voltage mode mode, exit probe\n"); return 0; } config.dev = &tps6105x->client->dev; config.init_data = pdata->regulator_data; config.driver_data = tps6105x; config.regmap = tps6105x->regmap; /* Register regulator with framework */ tps6105x->regulator = devm_regulator_register(&pdev->dev, &tps6105x_regulator_desc, &config); if (IS_ERR(tps6105x->regulator)) { ret = PTR_ERR(tps6105x->regulator); dev_err(&tps6105x->client->dev, "failed to register regulator\n"); return ret; } platform_set_drvdata(pdev, tps6105x); return 0; } static struct platform_driver tps6105x_regulator_driver = { .driver = { .name = "tps6105x-regulator", }, .probe = tps6105x_regulator_probe, }; static __init int tps6105x_regulator_init(void) { return platform_driver_register(&tps6105x_regulator_driver); } subsys_initcall(tps6105x_regulator_init); static __exit void tps6105x_regulator_exit(void) { platform_driver_unregister(&tps6105x_regulator_driver); } module_exit(tps6105x_regulator_exit); MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); MODULE_DESCRIPTION("TPS6105x regulator driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:tps6105x-regulator");