linux-imx

/*

 * wm8994-regulator.c  --  Regulator driver for the WM8994

 *

 * Copyright 2009 Wolfson Microelectronics PLC.

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>

 *

 *  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/module.h>

#include <linux/moduleparam.h>

#include <linux/init.h>

#include <linux/bitops.h>

#include <linux/err.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/gpio/consumer.h>

#include <linux/slab.h>

​

#include <linux/mfd/wm8994/core.h>

#include <linux/mfd/wm8994/registers.h>

#include <linux/mfd/wm8994/pdata.h>

​

struct wm8994_ldo {

    struct regulator_dev *regulator;

    struct wm8994 *wm8994;

    struct regulator_consumer_supply supply;

    struct regulator_init_data init_data;

};

​

#define WM8994_LDO1_MAX_SELECTOR 0x7

#define WM8994_LDO2_MAX_SELECTOR 0x3

​

static const struct regulator_ops wm8994_ldo1_ops = {

    .list_voltage = regulator_list_voltage_linear,

    .map_voltage = regulator_map_voltage_linear,

    .get_voltage_sel = regulator_get_voltage_sel_regmap,

    .set_voltage_sel = regulator_set_voltage_sel_regmap,

};

​

static int wm8994_ldo2_list_voltage(struct regulator_dev *rdev,

                    unsigned int selector)

{

    struct wm8994_ldo *ldo = rdev_get_drvdata(rdev);

​

    if (selector > WM8994_LDO2_MAX_SELECTOR)

        return -EINVAL;

​

    switch (ldo->wm8994->type) {

    case WM8994:

        return (selector * 100000) + 900000;

    case WM8958:

        return (selector * 100000) + 1000000;

    case WM1811:

        switch (selector) {

        case 0:

            return -EINVAL;

        default: