drivers/regulator/pcf50633-regulator.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /* NXP PCF50633 PMIC Driver
0003  *
0004  * (C) 2006-2008 by Openmoko, Inc.
0005  * Author: Balaji Rao <balajirrao@openmoko.org>
0006  * All rights reserved.
0007  *
0008  * Broken down from monstrous PCF50633 driver mainly by
0009  * Harald Welte and Andy Green and Werner Almesberger
0010  */
0011
0012 #include <linux/kernel.h>
0013 #include <linux/module.h>
0014 #include <linux/init.h>
0015 #include <linux/device.h>
0016 #include <linux/err.h>
0017 #include <linux/platform_device.h>
0018
0019 #include <linux/mfd/pcf50633/core.h>
0020 #include <linux/mfd/pcf50633/pmic.h>
0021
0022 #define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
0023     {                           \
0024         .name = _name,                  \
0025         .id = PCF50633_REGULATOR_##_id,         \
0026         .ops = &pcf50633_regulator_ops,         \
0027         .n_voltages = _n,               \
0028         .min_uV = _min_uV,              \
0029         .uV_step = _uV_step,                \
0030         .linear_min_sel = _min_sel,         \
0031         .type = REGULATOR_VOLTAGE,          \
0032         .owner = THIS_MODULE,               \
0033         .vsel_reg = PCF50633_REG_##_id##OUT,        \
0034         .vsel_mask = 0xff,              \
0035         .enable_reg = PCF50633_REG_##_id##OUT + 1,  \
0036         .enable_mask = PCF50633_REGULATOR_ON,       \
0037     }
0038
0039 static const struct regulator_ops pcf50633_regulator_ops = {
0040     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0041     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0042     .list_voltage = regulator_list_voltage_linear,
0043     .map_voltage = regulator_map_voltage_linear,
0044     .enable = regulator_enable_regmap,
0045     .disable = regulator_disable_regmap,
0046     .is_enabled = regulator_is_enabled_regmap,
0047 };
0048
0049 static const struct regulator_desc regulators[] = {
0050     [PCF50633_REGULATOR_AUTO] =
0051         PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
0052     [PCF50633_REGULATOR_DOWN1] =
0053         PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
0054     [PCF50633_REGULATOR_DOWN2] =
0055         PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
0056     [PCF50633_REGULATOR_LDO1] =
0057         PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
0058     [PCF50633_REGULATOR_LDO2] =
0059         PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
0060     [PCF50633_REGULATOR_LDO3] =
0061         PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
0062     [PCF50633_REGULATOR_LDO4] =
0063         PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
0064     [PCF50633_REGULATOR_LDO5] =
0065         PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
0066     [PCF50633_REGULATOR_LDO6] =
0067         PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
0068     [PCF50633_REGULATOR_HCLDO] =
0069         PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
0070     [PCF50633_REGULATOR_MEMLDO] =
0071         PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
0072 };
0073
0074 static int pcf50633_regulator_probe(struct platform_device *pdev)
0075 {
0076     struct regulator_dev *rdev;
0077     struct pcf50633 *pcf;
0078     struct regulator_config config = { };
0079
0080     /* Already set by core driver */
0081     pcf = dev_to_pcf50633(pdev->dev.parent);
0082
0083     config.dev = &pdev->dev;
0084     config.init_data = dev_get_platdata(&pdev->dev);
0085     config.driver_data = pcf;
0086     config.regmap = pcf->regmap;
0087
0088     rdev = devm_regulator_register(&pdev->dev, &regulators[pdev->id],
0089                        &config);
0090     if (IS_ERR(rdev))
0091         return PTR_ERR(rdev);
0092
0093     platform_set_drvdata(pdev, rdev);
0094
0095     if (pcf->pdata->regulator_registered)
0096         pcf->pdata->regulator_registered(pcf, pdev->id);
0097
0098     return 0;
0099 }
0100
0101 static struct platform_driver pcf50633_regulator_driver = {
0102     .driver = {
0103         .name = "pcf50633-regulator",
0104     },
0105     .probe = pcf50633_regulator_probe,
0106 };
0107
0108 static int __init pcf50633_regulator_init(void)
0109 {
0110     return platform_driver_register(&pcf50633_regulator_driver);
0111 }
0112 subsys_initcall(pcf50633_regulator_init);
0113
0114 static void __exit pcf50633_regulator_exit(void)
0115 {
0116     platform_driver_unregister(&pcf50633_regulator_driver);
0117 }
0118 module_exit(pcf50633_regulator_exit);
0119
0120 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
0121 MODULE_DESCRIPTION("PCF50633 regulator driver");
0122 MODULE_LICENSE("GPL");
0123 MODULE_ALIAS("platform:pcf50633-regulator");