1. 根目录:
2. drivers
3. regulator
4. pcf50633-regulator.c

/* NXP PCF50633 PMIC Driver
 *
 * (C) 2006-2008 by Openmoko, Inc.
 * Author: Balaji Rao <balajirrao@openmoko.org>
 * All rights reserved.
 *
 * Broken down from monstrous PCF50633 driver mainly by
 * Harald Welte and Andy Green and Werner Almesberger
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/platform_device.h>

#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/pmic.h>

#define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
	{							\
		.name = _name,					\
		.id = PCF50633_REGULATOR_##_id,			\
		.ops = &pcf50633_regulator_ops,			\
		.n_voltages = _n,				\
		.min_uV = _min_uV,				\
		.uV_step = _uV_step,				\
		.linear_min_sel = _min_sel,			\
		.type = REGULATOR_VOLTAGE,			\
		.owner = THIS_MODULE,				\
		.vsel_reg = PCF50633_REG_##_id##OUT,		\
		.vsel_mask = 0xff,				\
		.enable_reg = PCF50633_REG_##_id##OUT + 1,	\
		.enable_mask = PCF50633_REGULATOR_ON,		\
	}

static struct regulator_ops pcf50633_regulator_ops = {
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
};

static const struct regulator_desc regulators[] = {
	[PCF50633_REGULATOR_AUTO] =
		PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
	[PCF50633_REGULATOR_DOWN1] =
		PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
	[PCF50633_REGULATOR_DOWN2] =
		PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
	[PCF50633_REGULATOR_LDO1] =
		PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_LDO2] =
		PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_LDO3] =
		PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_LDO4] =
		PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_LDO5] =
		PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_LDO6] =
		PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_HCLDO] =
		PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
	[PCF50633_REGULATOR_MEMLDO] =
		PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
};

static int pcf50633_regulator_probe(struct platform_device *pdev)
{
	struct regulator_dev *rdev;
	struct pcf50633 *pcf;
	struct regulator_config config = { };

	/* Already set by core driver */
	pcf = dev_to_pcf50633(pdev->dev.parent);

	config.dev = &pdev->dev;
	config.init_data = pdev->dev.platform_data;
	config.driver_data = pcf;
	config.regmap = pcf->regmap;

	rdev = regulator_register(&regulators[pdev->id], &config);
	if (IS_ERR(rdev))
		return PTR_ERR(rdev);

	platform_set_drvdata(pdev, rdev);

	if (pcf->pdata->regulator_registered)
		pcf->pdata->regulator_registered(pcf, pdev->id);

	return 0;
}

static int pcf50633_regulator_remove(struct platform_device *pdev)
{
	struct regulator_dev *rdev = platform_get_drvdata(pdev);

	platform_set_drvdata(pdev, NULL);
	regulator_unregister(rdev);

	return 0;
}

static struct platform_driver pcf50633_regulator_driver = {
	.driver = {
		.name = "pcf50633-regltr",
	},
	.probe = pcf50633_regulator_probe,
	.remove = pcf50633_regulator_remove,
};

static int __init pcf50633_regulator_init(void)
{
	return platform_driver_register(&pcf50633_regulator_driver);
}
subsys_initcall(pcf50633_regulator_init);

static void __exit pcf50633_regulator_exit(void)
{
	platform_driver_unregister(&pcf50633_regulator_driver);
}
module_exit(pcf50633_regulator_exit);

MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-regulator");