linux/drivers/regulator/tps65912-regulator.c
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   1/*
   2 * Regulator driver for TI TPS65912x PMICs
   3 *
   4 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
   5 *      Andrew F. Davis <afd@ti.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12 * kind, whether expressed or implied; without even the implied warranty
  13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License version 2 for more details.
  15 *
  16 * Based on the TPS65218 driver and the previous TPS65912 driver by
  17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  18 */
  19
  20#include <linux/module.h>
  21#include <linux/platform_device.h>
  22#include <linux/regulator/driver.h>
  23
  24#include <linux/mfd/tps65912.h>
  25
  26enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
  27        LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
  28
  29#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr)  \
  30        [_id] = {                                                       \
  31                .name                   = _name,                        \
  32                .of_match               = _of_match,                    \
  33                .regulators_node        = "regulators",                 \
  34                .id                     = _id,                          \
  35                .ops                    = &_ops,                        \
  36                .n_voltages             = 64,                           \
  37                .type                   = REGULATOR_VOLTAGE,            \
  38                .owner                  = THIS_MODULE,                  \
  39                .vsel_reg               = _vr,                          \
  40                .vsel_mask              = 0x3f,                         \
  41                .enable_reg             = _er,                          \
  42                .enable_mask            = BIT(7),                       \
  43                .volt_table             = NULL,                         \
  44                .linear_ranges          = _lr,                          \
  45                .n_linear_ranges        = ARRAY_SIZE(_lr),              \
  46        }
  47
  48static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
  49        REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
  50};
  51
  52static const struct regulator_linear_range tps65912_ldo_ranges[] = {
  53        REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
  54        REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
  55        REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
  56};
  57
  58/* Operations permitted on DCDCx */
  59static struct regulator_ops tps65912_ops_dcdc = {
  60        .is_enabled             = regulator_is_enabled_regmap,
  61        .enable                 = regulator_enable_regmap,
  62        .disable                = regulator_disable_regmap,
  63        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  64        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  65        .list_voltage           = regulator_list_voltage_linear_range,
  66};
  67
  68/* Operations permitted on LDOx */
  69static struct regulator_ops tps65912_ops_ldo = {
  70        .is_enabled             = regulator_is_enabled_regmap,
  71        .enable                 = regulator_enable_regmap,
  72        .disable                = regulator_disable_regmap,
  73        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
  74        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
  75        .list_voltage           = regulator_list_voltage_linear_range,
  76        .map_voltage            = regulator_map_voltage_linear_range,
  77};
  78
  79static const struct regulator_desc regulators[] = {
  80        TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
  81                           TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
  82                           tps65912_dcdc_ranges),
  83        TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
  84                           TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
  85                           tps65912_dcdc_ranges),
  86        TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
  87                           TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
  88                           tps65912_dcdc_ranges),
  89        TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
  90                           TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
  91                           tps65912_dcdc_ranges),
  92        TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
  93                           TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
  94                           tps65912_ldo_ranges),
  95        TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
  96                           TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
  97                           tps65912_ldo_ranges),
  98        TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
  99                           TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
 100                           tps65912_ldo_ranges),
 101        TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
 102                           TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
 103                           tps65912_ldo_ranges),
 104        TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
 105                           TPS65912_LDO5, TPS65912_LDO5,
 106                           tps65912_ldo_ranges),
 107        TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
 108                           TPS65912_LDO6, TPS65912_LDO6,
 109                           tps65912_ldo_ranges),
 110        TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
 111                           TPS65912_LDO7, TPS65912_LDO7,
 112                           tps65912_ldo_ranges),
 113        TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
 114                           TPS65912_LDO8, TPS65912_LDO8,
 115                           tps65912_ldo_ranges),
 116        TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
 117                           TPS65912_LDO9, TPS65912_LDO9,
 118                           tps65912_ldo_ranges),
 119        TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
 120                           TPS65912_LDO10, TPS65912_LDO10,
 121                           tps65912_ldo_ranges),
 122};
 123
 124static int tps65912_regulator_probe(struct platform_device *pdev)
 125{
 126        struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
 127        struct regulator_config config = { };
 128        struct regulator_dev *rdev;
 129        int i;
 130
 131        platform_set_drvdata(pdev, tps);
 132
 133        config.dev = &pdev->dev;
 134        config.driver_data = tps;
 135        config.dev->of_node = tps->dev->of_node;
 136        config.regmap = tps->regmap;
 137
 138        for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 139                rdev = devm_regulator_register(&pdev->dev, &regulators[i],
 140                                               &config);
 141                if (IS_ERR(rdev)) {
 142                        dev_err(tps->dev, "failed to register %s regulator\n",
 143                                pdev->name);
 144                        return PTR_ERR(rdev);
 145                }
 146        }
 147
 148        return 0;
 149}
 150
 151static const struct platform_device_id tps65912_regulator_id_table[] = {
 152        { "tps65912-regulator", },
 153        { /* sentinel */ }
 154};
 155MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
 156
 157static struct platform_driver tps65912_regulator_driver = {
 158        .driver = {
 159                .name = "tps65912-regulator",
 160        },
 161        .probe = tps65912_regulator_probe,
 162        .id_table = tps65912_regulator_id_table,
 163};
 164module_platform_driver(tps65912_regulator_driver);
 165
 166MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 167MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
 168MODULE_LICENSE("GPL v2");
 169