linux/drivers/regulator/pcf50633-regulator.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/* NXP PCF50633 PMIC Driver
   3 *
   4 * (C) 2006-2008 by Openmoko, Inc.
   5 * Author: Balaji Rao <balajirrao@openmoko.org>
   6 * All rights reserved.
   7 *
   8 * Broken down from monstrous PCF50633 driver mainly by
   9 * Harald Welte and Andy Green and Werner Almesberger
  10 */
  11
  12#include <linux/kernel.h>
  13#include <linux/module.h>
  14#include <linux/init.h>
  15#include <linux/device.h>
  16#include <linux/err.h>
  17#include <linux/platform_device.h>
  18
  19#include <linux/mfd/pcf50633/core.h>
  20#include <linux/mfd/pcf50633/pmic.h>
  21
  22#define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
  23        {                                                       \
  24                .name = _name,                                  \
  25                .id = PCF50633_REGULATOR_##_id,                 \
  26                .ops = &pcf50633_regulator_ops,                 \
  27                .n_voltages = _n,                               \
  28                .min_uV = _min_uV,                              \
  29                .uV_step = _uV_step,                            \
  30                .linear_min_sel = _min_sel,                     \
  31                .type = REGULATOR_VOLTAGE,                      \
  32                .owner = THIS_MODULE,                           \
  33                .vsel_reg = PCF50633_REG_##_id##OUT,            \
  34                .vsel_mask = 0xff,                              \
  35                .enable_reg = PCF50633_REG_##_id##OUT + 1,      \
  36                .enable_mask = PCF50633_REGULATOR_ON,           \
  37        }
  38
  39static const struct regulator_ops pcf50633_regulator_ops = {
  40        .set_voltage_sel = regulator_set_voltage_sel_regmap,
  41        .get_voltage_sel = regulator_get_voltage_sel_regmap,
  42        .list_voltage = regulator_list_voltage_linear,
  43        .map_voltage = regulator_map_voltage_linear,
  44        .enable = regulator_enable_regmap,
  45        .disable = regulator_disable_regmap,
  46        .is_enabled = regulator_is_enabled_regmap,
  47};
  48
  49static const struct regulator_desc regulators[] = {
  50        [PCF50633_REGULATOR_AUTO] =
  51                PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
  52        [PCF50633_REGULATOR_DOWN1] =
  53                PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
  54        [PCF50633_REGULATOR_DOWN2] =
  55                PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
  56        [PCF50633_REGULATOR_LDO1] =
  57                PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
  58        [PCF50633_REGULATOR_LDO2] =
  59                PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
  60        [PCF50633_REGULATOR_LDO3] =
  61                PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
  62        [PCF50633_REGULATOR_LDO4] =
  63                PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
  64        [PCF50633_REGULATOR_LDO5] =
  65                PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
  66        [PCF50633_REGULATOR_LDO6] =
  67                PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
  68        [PCF50633_REGULATOR_HCLDO] =
  69                PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
  70        [PCF50633_REGULATOR_MEMLDO] =
  71                PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
  72};
  73
  74static int pcf50633_regulator_probe(struct platform_device *pdev)
  75{
  76        struct regulator_dev *rdev;
  77        struct pcf50633 *pcf;
  78        struct regulator_config config = { };
  79
  80        /* Already set by core driver */
  81        pcf = dev_to_pcf50633(pdev->dev.parent);
  82
  83        config.dev = &pdev->dev;
  84        config.init_data = dev_get_platdata(&pdev->dev);
  85        config.driver_data = pcf;
  86        config.regmap = pcf->regmap;
  87
  88        rdev = devm_regulator_register(&pdev->dev, &regulators[pdev->id],
  89                                       &config);
  90        if (IS_ERR(rdev))
  91                return PTR_ERR(rdev);
  92
  93        platform_set_drvdata(pdev, rdev);
  94
  95        if (pcf->pdata->regulator_registered)
  96                pcf->pdata->regulator_registered(pcf, pdev->id);
  97
  98        return 0;
  99}
 100
 101static struct platform_driver pcf50633_regulator_driver = {
 102        .driver = {
 103                .name = "pcf50633-regulator",
 104        },
 105        .probe = pcf50633_regulator_probe,
 106};
 107
 108static int __init pcf50633_regulator_init(void)
 109{
 110        return platform_driver_register(&pcf50633_regulator_driver);
 111}
 112subsys_initcall(pcf50633_regulator_init);
 113
 114static void __exit pcf50633_regulator_exit(void)
 115{
 116        platform_driver_unregister(&pcf50633_regulator_driver);
 117}
 118module_exit(pcf50633_regulator_exit);
 119
 120MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
 121MODULE_DESCRIPTION("PCF50633 regulator driver");
 122MODULE_LICENSE("GPL");
 123MODULE_ALIAS("platform:pcf50633-regulator");
 124