linux-imx

/*

 * 74xx MMIO GPIO driver

 *

 *  Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */

​

#include <linux/err.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/gpio/driver.h>

#include <linux/platform_device.h>

​

#define MMIO_74XX_DIR_IN    (0 << 8)

#define MMIO_74XX_DIR_OUT   (1 << 8)

#define MMIO_74XX_BIT_CNT(x)    ((x) & 0xff)

​

struct mmio_74xx_gpio_priv {

    struct gpio_chip    gc;

    unsigned        flags;

};

​

static const struct of_device_id mmio_74xx_gpio_ids[] = {

    {

        .compatible = "ti,741g125",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 1),

    },

    {

        .compatible = "ti,742g125",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 2),

    },

    {

        .compatible = "ti,74125",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 4),

    },

    {

        .compatible = "ti,74365",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 6),

    },

    {

        .compatible = "ti,74244",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 8),

    },

    {

        .compatible = "ti,741624",

        .data       = (const void *)(MMIO_74XX_DIR_IN | 16),

    },

    {

        .compatible = "ti,741g74",

        .data       = (const void *)(MMIO_74XX_DIR_OUT | 1),

    },

    {

        .compatible = "ti,7474",

        .data       = (const void *)(MMIO_74XX_DIR_OUT | 2),

    },

    {

        .compatible = "ti,74175",

        .data       = (const void *)(MMIO_74XX_DIR_OUT | 4),

    },