linux-imx

/*

 * Device driver for regulators in Hi6421 IC

 *

 * Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.

 *              http://www.hisilicon.com

 * Copyright (c) <2013-2014> Linaro Ltd.

 *              http://www.linaro.org

 *

 * Author: Guodong Xu <guodong.xu@linaro.org>

 *

 * 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.

 */

​

#include <linux/slab.h>

#include <linux/device.h>

#include <linux/module.h>

#include <linux/err.h>

#include <linux/platform_device.h>

#include <linux/of.h>

#include <linux/regmap.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

#include <linux/mfd/hi6421-pmic.h>

​

/*

 * struct hi6421_regulator_pdata - Hi6421 regulator data of platform device

 * @lock: mutex to serialize regulator enable

 */

struct hi6421_regulator_pdata {

    struct mutex lock;

};

​

/*

 * struct hi6421_regulator_info - hi6421 regulator information

 * @desc: regulator description

 * @mode_mask: ECO mode bitmask of LDOs; for BUCKs, this masks sleep

 * @eco_microamp: eco mode load upper limit (in uA), valid for LDOs only

 */

struct hi6421_regulator_info {

    struct regulator_desc   desc;

    u8      mode_mask;

    u32     eco_microamp;

};

​

/* HI6421 regulators */

enum hi6421_regulator_id {

    HI6421_LDO0,

    HI6421_LDO1,

    HI6421_LDO2,

    HI6421_LDO3,

    HI6421_LDO4,

    HI6421_LDO5,

    HI6421_LDO6,

    HI6421_LDO7,

    HI6421_LDO8,

    HI6421_LDO9,

    HI6421_LDO10,

    HI6421_LDO11,

    HI6421_LDO12,

    HI6421_LDO13,

    HI6421_LDO14,

    HI6421_LDO15,

    HI6421_LDO16,

    HI6421_LDO17,

    HI6421_LDO18,

    HI6421_LDO19,

    HI6421_LDO20,

    HI6421_LDOAUDIO,

    HI6421_BUCK0,

    HI6421_BUCK1,

    HI6421_BUCK2,

    HI6421_BUCK3,

    HI6421_BUCK4,

    HI6421_BUCK5,

    HI6421_NUM_REGULATORS,

};

​

#define HI6421_REGULATOR_OF_MATCH(_name, id)                \

{                                   \

    .name = #_name,                         \

    .driver_data = (void *) HI6421_##id,                \

}

​

static struct of_regulator_match hi6421_regulator_match[] = {

    HI6421_REGULATOR_OF_MATCH(hi6421_vout0, LDO0),

    HI6421_REGULATOR_OF_MATCH(hi6421_vout1, LDO1),

    HI6421_REGULATOR_OF_MATCH(hi6421_vout2, LDO2),

    HI6421_REGULATOR_OF_MATCH(hi6421_vout3, LDO3),

    HI6421_REGULATOR_OF_MATCH(hi6421_vout4, LDO4),