uboot-phytec

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

/*

 * Copyright (C) 2015 Linaro

 * Peter Griffin <peter.griffin@linaro.org>

 */

​

#include <common.h>

#include <dm.h>

#include <asm/gpio.h>

#include <asm/io.h>

#include <errno.h>

​

static int hi6220_gpio_direction_input(struct udevice *dev, unsigned int gpio)

{

    struct gpio_bank *bank = dev_get_priv(dev);

    u8 data;

​

    data = readb(bank->base + HI6220_GPIO_DIR);

    data &= ~(1 << gpio);

    writeb(data, bank->base + HI6220_GPIO_DIR);

​

    return 0;

}

​

static int hi6220_gpio_set_value(struct udevice *dev, unsigned gpio,

                  int value)

{

    struct gpio_bank *bank = dev_get_priv(dev);

​

    writeb(!!value << gpio, bank->base + (BIT(gpio + 2)));

    return 0;

}

​

static int hi6220_gpio_direction_output(struct udevice *dev, unsigned gpio,

                    int value)

{

    struct gpio_bank *bank = dev_get_priv(dev);

    u8 data;

​

    data = readb(bank->base + HI6220_GPIO_DIR);

    data |= 1 << gpio;

    writeb(data, bank->base + HI6220_GPIO_DIR);

​

    hi6220_gpio_set_value(dev, gpio, value);

​

    return 0;

}

​

static int hi6220_gpio_get_value(struct udevice *dev, unsigned gpio)

{

    struct gpio_bank *bank = dev_get_priv(dev);

​

    return !!readb(bank->base + (BIT(gpio + 2)));

}

​

​

​

static const struct dm_gpio_ops gpio_hi6220_ops = {

    .direction_input    = hi6220_gpio_direction_input,

    .direction_output   = hi6220_gpio_direction_output,

    .get_value      = hi6220_gpio_get_value,

    .set_value      = hi6220_gpio_set_value,

};