linux-imx

/*

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * Copyright (C) 2012 ARM Limited

 */

​

#define DRVNAME "vexpress-regulator"

#define pr_fmt(fmt) DRVNAME ": " fmt

​

#include <linux/device.h>

#include <linux/err.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

#include <linux/vexpress.h>

​

struct vexpress_regulator {

    struct regulator_desc desc;

    struct regulator_dev *regdev;

    struct regmap *regmap;

};

​

static int vexpress_regulator_get_voltage(struct regulator_dev *regdev)

{

    struct vexpress_regulator *reg = rdev_get_drvdata(regdev);

    u32 uV;

    int err = regmap_read(reg->regmap, 0, &uV);

​

    return err ? err : uV;

}

​

static int vexpress_regulator_set_voltage(struct regulator_dev *regdev,

        int min_uV, int max_uV, unsigned *selector)

{

    struct vexpress_regulator *reg = rdev_get_drvdata(regdev);

​

    return regmap_write(reg->regmap, 0, min_uV);

}

​

static struct regulator_ops vexpress_regulator_ops_ro = {

    .get_voltage = vexpress_regulator_get_voltage,

};

​

static struct regulator_ops vexpress_regulator_ops = {

    .get_voltage = vexpress_regulator_get_voltage,

    .set_voltage = vexpress_regulator_set_voltage,

};

​

static int vexpress_regulator_probe(struct platform_device *pdev)

{

    struct vexpress_regulator *reg;

    struct regulator_init_data *init_data;

    struct regulator_config config = { };

​