drivers/regulator/pcf50633-regulator.c

   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
  39 static 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
  49 static 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
  74 static 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
 101 static struct platform_driver pcf50633_regulator_driver = {
 102         .driver = {
 103                 .name = "pcf50633-regulator",
 104                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 105         },
 106         .probe = pcf50633_regulator_probe,
 107 };
 108
 109 static int __init pcf50633_regulator_init(void)
 110 {
 111         return platform_driver_register(&pcf50633_regulator_driver);
 112 }
 113 subsys_initcall(pcf50633_regulator_init);
 114
 115 static void __exit pcf50633_regulator_exit(void)
 116 {
 117         platform_driver_unregister(&pcf50633_regulator_driver);
 118 }
 119 module_exit(pcf50633_regulator_exit);
 120
 121 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
 122 MODULE_DESCRIPTION("PCF50633 regulator driver");
 123 MODULE_LICENSE("GPL");
 124 MODULE_ALIAS("platform:pcf50633-regulator");