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Linux/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 = dev_get_platdata(&pdev->dev);
 90         config.driver_data = pcf;
 91         config.regmap = pcf->regmap;
 92 
 93         rdev = devm_regulator_register(&pdev->dev, &regulators[pdev->id],
 94                                        &config);
 95         if (IS_ERR(rdev))
 96                 return PTR_ERR(rdev);
 97 
 98         platform_set_drvdata(pdev, rdev);
 99 
100         if (pcf->pdata->regulator_registered)
101                 pcf->pdata->regulator_registered(pcf, pdev->id);
102 
103         return 0;
104 }
105 
106 static struct platform_driver pcf50633_regulator_driver = {
107         .driver = {
108                 .name = "pcf50633-regulator",
109         },
110         .probe = pcf50633_regulator_probe,
111 };
112 
113 static int __init pcf50633_regulator_init(void)
114 {
115         return platform_driver_register(&pcf50633_regulator_driver);
116 }
117 subsys_initcall(pcf50633_regulator_init);
118 
119 static void __exit pcf50633_regulator_exit(void)
120 {
121         platform_driver_unregister(&pcf50633_regulator_driver);
122 }
123 module_exit(pcf50633_regulator_exit);
124 
125 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
126 MODULE_DESCRIPTION("PCF50633 regulator driver");
127 MODULE_LICENSE("GPL");
128 MODULE_ALIAS("platform:pcf50633-regulator");
129 

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