linux-imx

// SPDX-License-Identifier: GPL-2.0+

//

// Copyright (c) 2013 Samsung Electronics Co., Ltd

//      http://www.samsung.com

​

#include <linux/bug.h>

#include <linux/err.h>

#include <linux/gpio.h>

#include <linux/slab.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/regmap.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

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

#include <linux/mfd/samsung/s2mpa01.h>

​

#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)

​

struct s2mpa01_info {

    struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX];

    int ramp_delay24;

    int ramp_delay3;

    int ramp_delay5;

    int ramp_delay16;

    int ramp_delay7;

    int ramp_delay8910;

};

​

static int get_ramp_delay(int ramp_delay)

{

    unsigned char cnt = 0;

​

    ramp_delay /= 6250;

​

    while (true) {

        ramp_delay = ramp_delay >> 1;

        if (ramp_delay == 0)

            break;

        cnt++;

    }

​

    if (cnt > 3)

        cnt = 3;

​

    return cnt;

}

​

static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,

                   unsigned int old_selector,

                   unsigned int new_selector)

{

    struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);

    unsigned int ramp_delay = 0;

    int old_volt, new_volt;

​

    switch (rdev_get_id(rdev)) {

    case S2MPA01_BUCK2:

    case S2MPA01_BUCK4:

        ramp_delay = s2mpa01->ramp_delay24;

        break;