linux-imx

/*

 * GPIO driver for Fintek Super-I/O F71869, F71869A, F71882, F71889 and F81866

 *

 * Copyright (C) 2010-2013 LaCie

 *

 * Author: Simon Guinot <simon.guinot@sequanux.org>

 *

 * 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/module.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/io.h>

#include <linux/gpio/driver.h>

#include <linux/bitops.h>

​

#define DRVNAME "gpio-f7188x"

​

/*

 * Super-I/O registers

 */

#define SIO_LDSEL       0x07    /* Logical device select */

#define SIO_DEVID       0x20    /* Device ID (2 bytes) */

#define SIO_DEVREV      0x22    /* Device revision */

#define SIO_MANID       0x23    /* Fintek ID (2 bytes) */

​

#define SIO_LD_GPIO     0x06    /* GPIO logical device */

#define SIO_UNLOCK_KEY      0x87    /* Key to enable Super-I/O */

#define SIO_LOCK_KEY        0xAA    /* Key to disable Super-I/O */

​

#define SIO_FINTEK_ID       0x1934  /* Manufacturer ID */

#define SIO_F71869_ID       0x0814  /* F71869 chipset ID */

#define SIO_F71869A_ID      0x1007  /* F71869A chipset ID */

#define SIO_F71882_ID       0x0541  /* F71882 chipset ID */

#define SIO_F71889_ID       0x0909  /* F71889 chipset ID */

#define SIO_F71889A_ID      0x1005  /* F71889A chipset ID */

#define SIO_F81866_ID       0x1010  /* F81866 chipset ID */

#define SIO_F81804_ID       0x1502  /* F81804 chipset ID, same for f81966 */

​

​

enum chips { f71869, f71869a, f71882fg, f71889a, f71889f, f81866, f81804 };

​

static const char * const f7188x_names[] = {

    "f71869",

    "f71869a",

    "f71882fg",

    "f71889a",

    "f71889f",

    "f81866",

    "f81804",

};

​

struct f7188x_sio {

    int addr;

    enum chips type;

};

​

struct f7188x_gpio_bank {

    struct gpio_chip chip;