linux-imx

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

//

// Copyright (c) 2012-2014 Samsung Electronics Co., Ltd

//              http://www.samsung.com

​

#include <linux/bug.h>

#include <linux/err.h>

#include <linux/gpio/consumer.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/s2mps11.h>

#include <linux/mfd/samsung/s2mps13.h>

#include <linux/mfd/samsung/s2mps14.h>

#include <linux/mfd/samsung/s2mps15.h>

#include <linux/mfd/samsung/s2mpu02.h>

​

/* The highest number of possible regulators for supported devices. */

#define S2MPS_REGULATOR_MAX     S2MPS13_REGULATOR_MAX

struct s2mps11_info {

    int ramp_delay2;

    int ramp_delay34;

    int ramp_delay5;

    int ramp_delay16;

    int ramp_delay7810;

    int ramp_delay9;

​

    enum sec_device_type dev_type;

​

    /*

     * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether

     * the suspend mode was enabled.

     */

    DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);

​

    /*

     * Array (size: number of regulators) with GPIO-s for external

     * sleep control.

     */

    struct gpio_desc **ext_control_gpiod;

};

​

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 s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,

                   unsigned int old_selector,

                   unsigned int new_selector)

{

    struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);

    unsigned int ramp_delay = 0;

    int old_volt, new_volt;

​

    switch (rdev_get_id(rdev)) {

    case S2MPS11_BUCK2:

        ramp_delay = s2mps11->ramp_delay2;

        break;

    case S2MPS11_BUCK3:

    case S2MPS11_BUCK4:

        ramp_delay = s2mps11->ramp_delay34;

        break;

    case S2MPS11_BUCK5:

        ramp_delay = s2mps11->ramp_delay5;

        break;

    case S2MPS11_BUCK6:

    case S2MPS11_BUCK1:

        ramp_delay = s2mps11->ramp_delay16;

        break;

    case S2MPS11_BUCK7:

    case S2MPS11_BUCK8: