linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/

 *  Andrew F. Davis <afd@ti.com>

 *

 * Based on the TPS65912 driver

 */

​

#include <linux/gpio/driver.h>

#include <linux/module.h>

#include <linux/platform_device.h>

​

#include <linux/mfd/tps65086.h>

​

struct tps65086_gpio {

    struct gpio_chip chip;

    struct tps65086 *tps;

};

​

static int tps65086_gpio_get_direction(struct gpio_chip *chip,

                       unsigned offset)

{

    /* This device is output only */

    return 0;

}

​

static int tps65086_gpio_direction_input(struct gpio_chip *chip,

                     unsigned offset)

{

    /* This device is output only */

    return -EINVAL;

}

​

static int tps65086_gpio_direction_output(struct gpio_chip *chip,

                      unsigned offset, int value)

{

    struct tps65086_gpio *gpio = gpiochip_get_data(chip);

​

    /* Set the initial value */

    regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,

               BIT(4 + offset), value ? BIT(4 + offset) : 0);

​

    return 0;

}

​

static int tps65086_gpio_get(struct gpio_chip *chip, unsigned offset)

{

    struct tps65086_gpio *gpio = gpiochip_get_data(chip);

    int ret, val;

​

    ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);

    if (ret < 0)

        return ret;

​

    return val & BIT(4 + offset);

}

​

static void tps65086_gpio_set(struct gpio_chip *chip, unsigned offset,

                  int value)

{

    struct tps65086_gpio *gpio = gpiochip_get_data(chip);

​

    regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,