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/*

 * $Id: amijoy.c,v 1.1.1.1 2004-04-15 02:03:30 phoenix Exp $

 *

 *  Copyright (c) 1998-2000 Vojtech Pavlik

 *

 *  Sponsored by SuSE

 */

/*

 * Driver for Amiga joysticks for Linux/m68k

 */

/*

 * 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

 *

 * Should you need to contact me, the author, you can do so either by

 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:

 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic

 */

#include <linux/types.h>

#include <linux/errno.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/input.h>

#include <asm/system.h>

#include <asm/amigahw.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");

MODULE_PARM(amijoy, "1-2i");

MODULE_LICENSE("GPL");

static int amijoy[2] = { 0, 1 };

static int amijoy_used[2] = { 0, 0 };

static struct input_dev amijoy_dev[2];

static char *amijoy_name = "Amiga joystick";

static void amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)

{

        int i, data = 0, button = 0;

        for (i = 0; i < 2; i++)

                if (amijoy[i]) {

                        switch (i) {

                                case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;

                                case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;

                        }

                        input_report_key(amijoy_dev + i, BTN_TRIGGER, button);

                        input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1);

                        data = ~(data ^ (data << 1));

                        input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1);

                }

}

static int amijoy_open(struct input_dev *dev)

{

        int *used = dev->private;

        if ((*used)++)

                return 0;

        if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", NULL)) {

                (*used)--;

                printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", amijoy_irq);

                return -EBUSY;

        }

        return 0;

}

static void amijoy_close(struct input_dev *dev)

{

        int *used = dev->private;

        if (!--(*used))

                free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);

}

static int __init amijoy_setup(char *str)

{

        int i;

        int ints[4]

        str = get_options(str, ARRAY_SIZE(ints), ints);

        for (i = 0; i <= ints[0] && i < 2; i++) amijoy[i] = ints[i+1];

        return 1;

}

__setup("amijoy=", amijoy_setup);

static int __init amijoy_init(void)

{

        int i, j;

        init_timer(amijoy_timer);

        port->timer.function = amijoy_timer;

        for (i = 0; i < 2; i++)

                if (amijoy[i]) {

                        if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,

                                                "amijoy [Denise]")) {

                                if (i == 1 && amijoy[0]) {

                                        input_unregister_device(amijoy_dev);

                                        release_mem_region(CUSTOM_PHYSADDR+10, 2);

                                }

                                return -EBUSY;

                        }

                        amijoy_dev[i].open = amijoy_open;

                        amijoy_dev[i].close = amijoy_close;

                        amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);

                        amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);

                        amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);

                        for (j = 0; j < 2; j++) {

                                amijoy_dev[i].absmin[ABS_X + j] = -1;

                                amijoy_dev[i].absmax[ABS_X + j] = 1;

                        }

                        amijoy->dev[i].name = amijoy_name;

                        amijoy->dev[i].idbus = BUS_AMIGA;

                        amijoy->dev[i].idvendor = 0x0001;

                        amijoy->dev[i].idproduct = 0x0003;

                        amijoy->dev[i].version = 0x0100;

                        amijoy_dev[i].private = amijoy_used + i;

                        input_register_device(amijoy_dev + i);

                        printk(KERN_INFO "input%d: %s at joy%ddat\n", amijoy_dev[i].number, amijoy_name, i);

                }

        return 0;

}

static void _exit amijoy_exit(void)

{

        int i;

        for (i = 0; i < 2; i++)

                if (amijoy[i]) {

                        input_unregister_device(amijoy_dev + i);

                        release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2);

                }

}

module_init(amijoy_init);

module_exit(amijoy_exit);