linux-imx

// SPDX-License-Identifier: GPL-2.0

//

// Lochnagar regulator driver

//

// Copyright (c) 2017-2018 Cirrus Logic, Inc. and

//                         Cirrus Logic International Semiconductor Ltd.

//

// Author: Charles Keepax <ckeepax@opensource.cirrus.com>

​

#include <linux/bitops.h>

#include <linux/device.h>

#include <linux/err.h>

#include <linux/module.h>

#include <linux/mutex.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

​

#include <linux/mfd/lochnagar.h>

#include <linux/mfd/lochnagar1_regs.h>

#include <linux/mfd/lochnagar2_regs.h>

​

static const struct regulator_ops lochnagar_micvdd_ops = {

    .enable = regulator_enable_regmap,

    .disable = regulator_disable_regmap,

    .is_enabled = regulator_is_enabled_regmap,

​

    .list_voltage = regulator_list_voltage_linear_range,

    .map_voltage = regulator_map_voltage_linear_range,

​

    .get_voltage_sel = regulator_get_voltage_sel_regmap,

    .set_voltage_sel = regulator_set_voltage_sel_regmap,

};

​

static const struct regulator_linear_range lochnagar_micvdd_ranges[] = {

    REGULATOR_LINEAR_RANGE(1000000, 0,    0xC, 50000),

    REGULATOR_LINEAR_RANGE(1700000, 0xD, 0x1F, 100000),

};

​

static int lochnagar_micbias_enable(struct regulator_dev *rdev)

{

    struct lochnagar *lochnagar = rdev_get_drvdata(rdev);

    int ret;

​

    mutex_lock(&lochnagar->analogue_config_lock);

​

    ret = regulator_enable_regmap(rdev);

    if (ret < 0)

        goto err;

​

    ret = lochnagar_update_config(lochnagar);

​

err:

    mutex_unlock(&lochnagar->analogue_config_lock);

​

    return ret;

}

​

static int lochnagar_micbias_disable(struct regulator_dev *rdev)