linux-imx

/*

 *  Driver for TANBAC TB0219 base board.

 *

 *  Copyright (C) 2005  Yoichi Yuasa <yuasa@linux-mips.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.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include <linux/platform_device.h>

#include <linux/fs.h>

#include <linux/init.h>

#include <linux/module.h>

#include <linux/uaccess.h>

​

#include <asm/io.h>

#include <asm/reboot.h>

#include <asm/vr41xx/giu.h>

#include <asm/vr41xx/tb0219.h>

​

MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");

MODULE_DESCRIPTION("TANBAC TB0219 base board driver");

MODULE_LICENSE("GPL");

​

static int major;   /* default is dynamic major device number */

module_param(major, int, 0);

MODULE_PARM_DESC(major, "Major device number");

​

static void (*old_machine_restart)(char *command);

static void __iomem *tb0219_base;

static DEFINE_SPINLOCK(tb0219_lock);

​

#define tb0219_read(offset)     readw(tb0219_base + (offset))

#define tb0219_write(offset, value) writew((value), tb0219_base + (offset))

​

#define TB0219_START    0x0a000000UL

#define TB0219_SIZE 0x20UL

​

#define TB0219_LED          0x00

#define TB0219_GPIO_INPUT       0x02

#define TB0219_GPIO_OUTPUT      0x04

#define TB0219_DIP_SWITCH       0x06

#define TB0219_MISC         0x08

#define TB0219_RESET            0x0e

#define TB0219_PCI_SLOT1_IRQ_STATUS 0x10

#define TB0219_PCI_SLOT2_IRQ_STATUS 0x12

#define TB0219_PCI_SLOT3_IRQ_STATUS 0x14

​

typedef enum {

    TYPE_LED,

    TYPE_GPIO_OUTPUT,

} tb0219_type_t;

​

/*

 * Minor device number

 *   0 = 7 segment LED

 *

 *  16 = GPIO IN 0

 *  17 = GPIO IN 1

 *  18 = GPIO IN 2

 *  19 = GPIO IN 3

 *  20 = GPIO IN 4

 *  21 = GPIO IN 5

 *  22 = GPIO IN 6

 *  23 = GPIO IN 7

 *

 *  32 = GPIO OUT 0

 *  33 = GPIO OUT 1

 *  34 = GPIO OUT 2

 *  35 = GPIO OUT 3

 *  36 = GPIO OUT 4

 *  37 = GPIO OUT 5

 *  38 = GPIO OUT 6

 *  39 = GPIO OUT 7

 *

 *  48 = DIP switch 1

 *  49 = DIP switch 2

 *  50 = DIP switch 3

 *  51 = DIP switch 4

 *  52 = DIP switch 5

 *  53 = DIP switch 6

 *  54 = DIP switch 7