12edd3b692404efc2d3915175a2ed553e783de763Linus Walleij/* 22edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * Driver for TPS61050/61052 boost converters, typically used for white LEDs 32edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * or audio amplifiers. 42edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * 52edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * Copyright (C) 2011 ST-Ericsson SA 62edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * Written on behalf of Linaro for ST-Ericsson 72edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * 82edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * Author: Linus Walleij <linus.walleij@linaro.org> 92edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * 102edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * License terms: GNU General Public License (GPL) version 2 112edd3b692404efc2d3915175a2ed553e783de763Linus Walleij */ 122edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 132edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/module.h> 142edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/kernel.h> 152edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/init.h> 162edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/err.h> 172edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/i2c.h> 182edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/platform_device.h> 192edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/regulator/driver.h> 202edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/mfd/core.h> 212edd3b692404efc2d3915175a2ed553e783de763Linus Walleij#include <linux/mfd/tps6105x.h> 222edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 23c55979b7bd78b8ee7999bcf5211bf0243260c675Axel Linstatic const unsigned int tps6105x_voltages[] = { 242edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 4500000, 252edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 5000000, 262edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 5250000, 272edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 5000000, /* There is an additional 5V */ 282edd3b692404efc2d3915175a2ed553e783de763Linus Walleij}; 292edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 302edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic int tps6105x_regulator_enable(struct regulator_dev *rdev) 312edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 322edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x *tps6105x = rdev_get_drvdata(rdev); 332edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 342edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 352edd3b692404efc2d3915175a2ed553e783de763Linus Walleij /* Activate voltage mode */ 362edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0, 372edd3b692404efc2d3915175a2ed553e783de763Linus Walleij TPS6105X_REG0_MODE_MASK, 382edd3b692404efc2d3915175a2ed553e783de763Linus Walleij TPS6105X_REG0_MODE_VOLTAGE << TPS6105X_REG0_MODE_SHIFT); 392edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (ret) 402edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 412edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 422edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 432edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 442edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 452edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic int tps6105x_regulator_disable(struct regulator_dev *rdev) 462edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 472edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x *tps6105x = rdev_get_drvdata(rdev); 482edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 492edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 502edd3b692404efc2d3915175a2ed553e783de763Linus Walleij /* Set into shutdown mode */ 512edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0, 522edd3b692404efc2d3915175a2ed553e783de763Linus Walleij TPS6105X_REG0_MODE_MASK, 532edd3b692404efc2d3915175a2ed553e783de763Linus Walleij TPS6105X_REG0_MODE_SHUTDOWN << TPS6105X_REG0_MODE_SHIFT); 542edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (ret) 552edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 562edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 572edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 582edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 592edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 602edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic int tps6105x_regulator_is_enabled(struct regulator_dev *rdev) 612edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 622edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x *tps6105x = rdev_get_drvdata(rdev); 632edd3b692404efc2d3915175a2ed553e783de763Linus Walleij u8 regval; 642edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 652edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 662edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = tps6105x_get(tps6105x, TPS6105X_REG_0, ®val); 672edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (ret) 682edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 692edd3b692404efc2d3915175a2ed553e783de763Linus Walleij regval &= TPS6105X_REG0_MODE_MASK; 702edd3b692404efc2d3915175a2ed553e783de763Linus Walleij regval >>= TPS6105X_REG0_MODE_SHIFT; 712edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 722edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (regval == TPS6105X_REG0_MODE_VOLTAGE) 732edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 1; 742edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 752edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 762edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 772edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 782edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic int tps6105x_regulator_get_voltage_sel(struct regulator_dev *rdev) 792edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 802edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x *tps6105x = rdev_get_drvdata(rdev); 812edd3b692404efc2d3915175a2ed553e783de763Linus Walleij u8 regval; 822edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 832edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 842edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = tps6105x_get(tps6105x, TPS6105X_REG_0, ®val); 852edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (ret) 862edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 872edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 882edd3b692404efc2d3915175a2ed553e783de763Linus Walleij regval &= TPS6105X_REG0_VOLTAGE_MASK; 892edd3b692404efc2d3915175a2ed553e783de763Linus Walleij regval >>= TPS6105X_REG0_VOLTAGE_SHIFT; 902edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return (int) regval; 912edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 922edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 932edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic int tps6105x_regulator_set_voltage_sel(struct regulator_dev *rdev, 942edd3b692404efc2d3915175a2ed553e783de763Linus Walleij unsigned selector) 952edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 962edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x *tps6105x = rdev_get_drvdata(rdev); 972edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 982edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 992edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0, 1002edd3b692404efc2d3915175a2ed553e783de763Linus Walleij TPS6105X_REG0_VOLTAGE_MASK, 1012edd3b692404efc2d3915175a2ed553e783de763Linus Walleij selector << TPS6105X_REG0_VOLTAGE_SHIFT); 1022edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (ret) 1032edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 1042edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1052edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 1062edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 1072edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1082edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic struct regulator_ops tps6105x_regulator_ops = { 1092edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .enable = tps6105x_regulator_enable, 1102edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .disable = tps6105x_regulator_disable, 1112edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .is_enabled = tps6105x_regulator_is_enabled, 1122edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .get_voltage_sel = tps6105x_regulator_get_voltage_sel, 1132edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .set_voltage_sel = tps6105x_regulator_set_voltage_sel, 114c55979b7bd78b8ee7999bcf5211bf0243260c675Axel Lin .list_voltage = regulator_list_voltage_table, 1152edd3b692404efc2d3915175a2ed553e783de763Linus Walleij}; 1162edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 117d882d73eb72d7e5d57645c8d40195f4a7ad76f6cAxel Linstatic const struct regulator_desc tps6105x_regulator_desc = { 1182edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .name = "tps6105x-boost", 1192edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .ops = &tps6105x_regulator_ops, 1202edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .type = REGULATOR_VOLTAGE, 1212edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .id = 0, 1222edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .owner = THIS_MODULE, 1232edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .n_voltages = ARRAY_SIZE(tps6105x_voltages), 124c55979b7bd78b8ee7999bcf5211bf0243260c675Axel Lin .volt_table = tps6105x_voltages, 1252edd3b692404efc2d3915175a2ed553e783de763Linus Walleij}; 1262edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1272edd3b692404efc2d3915175a2ed553e783de763Linus Walleij/* 1282edd3b692404efc2d3915175a2ed553e783de763Linus Walleij * Registers the chip as a voltage regulator 1292edd3b692404efc2d3915175a2ed553e783de763Linus Walleij */ 130a5023574d120ca3b9337cedd4e27de90cae9aff7Bill Pembertonstatic int tps6105x_regulator_probe(struct platform_device *pdev) 1312edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 132a7c98ce25cfa600bd614134a82d22bcb7bcb9d65Samuel Ortiz struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev); 1332edd3b692404efc2d3915175a2ed553e783de763Linus Walleij struct tps6105x_platform_data *pdata = tps6105x->pdata; 134c172708d38a401b2f3f841dfcd862b469fa0b670Mark Brown struct regulator_config config = { }; 1352edd3b692404efc2d3915175a2ed553e783de763Linus Walleij int ret; 1362edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1372edd3b692404efc2d3915175a2ed553e783de763Linus Walleij /* This instance is not set for regulator mode so bail out */ 1382edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (pdata->mode != TPS6105X_MODE_VOLTAGE) { 1392edd3b692404efc2d3915175a2ed553e783de763Linus Walleij dev_info(&pdev->dev, 1404932e89d75f7b946d2f03a0157b8b9f6a0e12e10Jingoo Han "chip not in voltage mode mode, exit probe\n"); 1412edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 1422edd3b692404efc2d3915175a2ed553e783de763Linus Walleij } 1432edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 144c172708d38a401b2f3f841dfcd862b469fa0b670Mark Brown config.dev = &tps6105x->client->dev; 145c172708d38a401b2f3f841dfcd862b469fa0b670Mark Brown config.init_data = pdata->regulator_data; 146c172708d38a401b2f3f841dfcd862b469fa0b670Mark Brown config.driver_data = tps6105x; 147c172708d38a401b2f3f841dfcd862b469fa0b670Mark Brown 1482edd3b692404efc2d3915175a2ed553e783de763Linus Walleij /* Register regulator with framework */ 1496a2b5a931f31c91cc2e261d99af7b3d881a41d86Jingoo Han tps6105x->regulator = devm_regulator_register(&pdev->dev, 1506a2b5a931f31c91cc2e261d99af7b3d881a41d86Jingoo Han &tps6105x_regulator_desc, 1516a2b5a931f31c91cc2e261d99af7b3d881a41d86Jingoo Han &config); 1522edd3b692404efc2d3915175a2ed553e783de763Linus Walleij if (IS_ERR(tps6105x->regulator)) { 1532edd3b692404efc2d3915175a2ed553e783de763Linus Walleij ret = PTR_ERR(tps6105x->regulator); 1542edd3b692404efc2d3915175a2ed553e783de763Linus Walleij dev_err(&tps6105x->client->dev, 1552edd3b692404efc2d3915175a2ed553e783de763Linus Walleij "failed to register regulator\n"); 1562edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return ret; 1572edd3b692404efc2d3915175a2ed553e783de763Linus Walleij } 158f0f060bdd55e36adff4cc80b2a4ed026774db7a9Axel Lin platform_set_drvdata(pdev, tps6105x); 1592edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1602edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return 0; 1612edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 1622edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1632edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic struct platform_driver tps6105x_regulator_driver = { 1642edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .driver = { 1652edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .name = "tps6105x-regulator", 1662edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .owner = THIS_MODULE, 1672edd3b692404efc2d3915175a2ed553e783de763Linus Walleij }, 1682edd3b692404efc2d3915175a2ed553e783de763Linus Walleij .probe = tps6105x_regulator_probe, 1692edd3b692404efc2d3915175a2ed553e783de763Linus Walleij}; 1702edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1712edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic __init int tps6105x_regulator_init(void) 1722edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 1732edd3b692404efc2d3915175a2ed553e783de763Linus Walleij return platform_driver_register(&tps6105x_regulator_driver); 1742edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 1752edd3b692404efc2d3915175a2ed553e783de763Linus Walleijsubsys_initcall(tps6105x_regulator_init); 1762edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1772edd3b692404efc2d3915175a2ed553e783de763Linus Walleijstatic __exit void tps6105x_regulator_exit(void) 1782edd3b692404efc2d3915175a2ed553e783de763Linus Walleij{ 1792edd3b692404efc2d3915175a2ed553e783de763Linus Walleij platform_driver_unregister(&tps6105x_regulator_driver); 1802edd3b692404efc2d3915175a2ed553e783de763Linus Walleij} 1812edd3b692404efc2d3915175a2ed553e783de763Linus Walleijmodule_exit(tps6105x_regulator_exit); 1822edd3b692404efc2d3915175a2ed553e783de763Linus Walleij 1832edd3b692404efc2d3915175a2ed553e783de763Linus WalleijMODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); 1842edd3b692404efc2d3915175a2ed553e783de763Linus WalleijMODULE_DESCRIPTION("TPS6105x regulator driver"); 1852edd3b692404efc2d3915175a2ed553e783de763Linus WalleijMODULE_LICENSE("GPL v2"); 1862edd3b692404efc2d3915175a2ed553e783de763Linus WalleijMODULE_ALIAS("platform:tps6105x-regulator"); 187