drivers/regulator/pcf50633-regulator.c

   1 /* NXP PCF50633 PMIC Driver
   2  *
   3  * (C) 2006-2008 by Openmoko, Inc.
   4  * Author: Balaji Rao <balajirrao@openmoko.org>
   5  * All rights reserved.
   6  *
   7  * Broken down from monstrous PCF50633 driver mainly by
   8  * Harald Welte and Andy Green and Werner Almesberger
   9  *
  10  *  This program is free software; you can redistribute  it and/or modify it
  11  *  under  the terms of  the GNU General  Public License as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  *
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/device.h>
  21 #include <linux/err.h>
  22 #include <linux/platform_device.h>
  23
  24 #include <linux/mfd/pcf50633/core.h>
  25 #include <linux/mfd/pcf50633/pmic.h>
  26
  27 #define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
  28         {                                                       \
  29                 .name = _name,                                  \
  30                 .id = PCF50633_REGULATOR_##_id,                 \
  31                 .ops = &pcf50633_regulator_ops,                 \
  32                 .n_voltages = _n,                               \
  33                 .min_uV = _min_uV,                              \
  34                 .uV_step = _uV_step,                            \
  35                 .linear_min_sel = _min_sel,                     \
  36                 .type = REGULATOR_VOLTAGE,                      \
  37                 .owner = THIS_MODULE,                           \
  38                 .vsel_reg = PCF50633_REG_##_id##OUT,            \
  39                 .vsel_mask = 0xff,                              \
  40                 .enable_reg = PCF50633_REG_##_id##OUT + 1,      \
  41                 .enable_mask = PCF50633_REGULATOR_ON,           \
  42         }
  43
  44 static struct regulator_ops pcf50633_regulator_ops = {
  45         .set_voltage_sel = regulator_set_voltage_sel_regmap,
  46         .get_voltage_sel = regulator_get_voltage_sel_regmap,
  47         .list_voltage = regulator_list_voltage_linear,
  48         .map_voltage = regulator_map_voltage_linear,
  49         .enable = regulator_enable_regmap,
  50         .disable = regulator_disable_regmap,
  51         .is_enabled = regulator_is_enabled_regmap,
  52 };
  53
  54 static const struct regulator_desc regulators[] = {
  55         [PCF50633_REGULATOR_AUTO] =
  56                 PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
  57         [PCF50633_REGULATOR_DOWN1] =
  58                 PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
  59         [PCF50633_REGULATOR_DOWN2] =
  60                 PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
  61         [PCF50633_REGULATOR_LDO1] =
  62                 PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
  63         [PCF50633_REGULATOR_LDO2] =
  64                 PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
  65         [PCF50633_REGULATOR_LDO3] =
  66                 PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
  67         [PCF50633_REGULATOR_LDO4] =
  68                 PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
  69         [PCF50633_REGULATOR_LDO5] =
  70                 PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
  71         [PCF50633_REGULATOR_LDO6] =
  72                 PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
  73         [PCF50633_REGULATOR_HCLDO] =
  74                 PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
  75         [PCF50633_REGULATOR_MEMLDO] =
  76                 PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
  77 };
  78
  79 static int pcf50633_regulator_probe(struct platform_device *pdev)
  80 {
  81         struct regulator_dev *rdev;
  82         struct pcf50633 *pcf;
  83         struct regulator_config config = { };
  84
  85         /* Already set by core driver */
  86         pcf = dev_to_pcf50633(pdev->dev.parent);
  87
  88         config.dev = &pdev->dev;
  89         config.init_data = pdev->dev.platform_data;
  90         config.driver_data = pcf;
  91         config.regmap = pcf->regmap;
  92
  93         rdev = regulator_register(&regulators[pdev->id], &config);
  94         if (IS_ERR(rdev))
  95                 return PTR_ERR(rdev);
  96
  97         platform_set_drvdata(pdev, rdev);
  98
  99         if (pcf->pdata->regulator_registered)
 100                 pcf->pdata->regulator_registered(pcf, pdev->id);
 101
 102         return 0;
 103 }
 104
 105 static int pcf50633_regulator_remove(struct platform_device *pdev)
 106 {
 107         struct regulator_dev *rdev = platform_get_drvdata(pdev);
 108
 109         regulator_unregister(rdev);
 110
 111         return 0;
 112 }
 113
 114 static struct platform_driver pcf50633_regulator_driver = {
 115         .driver = {
 116                 .name = "pcf50633-regltr",
 117         },
 118         .probe = pcf50633_regulator_probe,
 119         .remove = pcf50633_regulator_remove,
 120 };
 121
 122 static int __init pcf50633_regulator_init(void)
 123 {
 124         return platform_driver_register(&pcf50633_regulator_driver);
 125 }
 126 subsys_initcall(pcf50633_regulator_init);
 127
 128 static void __exit pcf50633_regulator_exit(void)
 129 {
 130         platform_driver_unregister(&pcf50633_regulator_driver);
 131 }
 132 module_exit(pcf50633_regulator_exit);
 133
 134 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
 135 MODULE_DESCRIPTION("PCF50633 regulator driver");
 136 MODULE_LICENSE("GPL");
 137 MODULE_ALIAS("platform:pcf50633-regulator");