1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Driver for TPS61050/61052 boost converters, typically used for white LEDs 4 * or audio amplifiers. 5 * 6 * Copyright (C) 2011 ST-Ericsson SA 7 * Written on behalf of Linaro for ST-Ericsson 8 * 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 22 static const unsigned int tps6105x_voltages[] = { 23 4500000, 24 5000000, 25 5250000, 26 5000000, /* There is an additional 5V */ 27 }; 28 29 static 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 38 static const struct regulator_desc tps6105x_regulator_desc = { 39 .name = "tps6105x-boost", 40 .ops = &tps6105x_regulator_ops, 41 .type = REGULATOR_VOLTAGE, 42 .id = 0, 43 .owner = THIS_MODULE, 44 .n_voltages = ARRAY_SIZE(tps6105x_voltages), 45 .volt_table = tps6105x_voltages, 46 .vsel_reg = TPS6105X_REG_0, 47 .vsel_mask = TPS6105X_REG0_VOLTAGE_MASK, 48 .enable_reg = TPS6105X_REG_0, 49 .enable_mask = TPS6105X_REG0_MODE_MASK, 50 .enable_val = TPS6105X_REG0_MODE_VOLTAGE << 51 TPS6105X_REG0_MODE_SHIFT, 52 }; 53 54 /* 55 * Registers the chip as a voltage regulator 56 */ 57 static int tps6105x_regulator_probe(struct platform_device *pdev) 58 { 59 struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev); 60 struct tps6105x_platform_data *pdata = tps6105x->pdata; 61 struct regulator_config config = { }; 62 int ret; 63 64 /* This instance is not set for regulator mode so bail out */ 65 if (pdata->mode != TPS6105X_MODE_VOLTAGE) { 66 dev_info(&pdev->dev, 67 "chip not in voltage mode mode, exit probe\n"); 68 return 0; 69 } 70 71 config.dev = &tps6105x->client->dev; 72 config.init_data = pdata->regulator_data; 73 config.driver_data = tps6105x; 74 config.regmap = tps6105x->regmap; 75 76 /* Register regulator with framework */ 77 tps6105x->regulator = devm_regulator_register(&pdev->dev, 78 &tps6105x_regulator_desc, 79 &config); 80 if (IS_ERR(tps6105x->regulator)) { 81 ret = PTR_ERR(tps6105x->regulator); 82 dev_err(&tps6105x->client->dev, 83 "failed to register regulator\n"); 84 return ret; 85 } 86 platform_set_drvdata(pdev, tps6105x); 87 88 return 0; 89 } 90 91 static struct platform_driver tps6105x_regulator_driver = { 92 .driver = { 93 .name = "tps6105x-regulator", 94 }, 95 .probe = tps6105x_regulator_probe, 96 }; 97 98 static __init int tps6105x_regulator_init(void) 99 { 100 return platform_driver_register(&tps6105x_regulator_driver); 101 } 102 subsys_initcall(tps6105x_regulator_init); 103 104 static __exit void tps6105x_regulator_exit(void) 105 { 106 platform_driver_unregister(&tps6105x_regulator_driver); 107 } 108 module_exit(tps6105x_regulator_exit); 109 110 MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); 111 MODULE_DESCRIPTION("TPS6105x regulator driver"); 112 MODULE_LICENSE("GPL v2"); 113 MODULE_ALIAS("platform:tps6105x-regulator"); 114