[mirror_ubuntu-artful-kernel.git] / drivers / input / joystick / amijoy.c

/*
 *  Copyright (c) 1998-2001 Vojtech Pavlik
 */

/*
 * 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@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, 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 <linux/interrupt.h>
#include <linux/mutex.h>

#include <asm/system.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Driver for Amiga joysticks");
MODULE_LICENSE("GPL");

static int amijoy[2] = { 0, 1 };
module_param_array_named(map, amijoy, uint, NULL, 0);
MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");

static int amijoy_used;
static DEFINE_MUTEX(amijoy_mutex);
static struct input_dev *amijoy_dev[2];
static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };

static irqreturn_t amijoy_interrupt(int irq, void *dummy)
{
	int i, data = 0, button = 0;

	for (i = 0; i < 2; i++)
		if (amijoy[i]) {

			switch (i) {
				case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
				case 1: data = ~amiga_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));

			input_sync(amijoy_dev[i]);
		}
	return IRQ_HANDLED;
}

static int amijoy_open(struct input_dev *dev)
{
	int err;

	err = mutex_lock_interruptible(&amijoy_mutex);
	if (err)
		return err;

	if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
		printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
		err = -EBUSY;
		goto out;
	}

	amijoy_used++;
out:
	mutex_unlock(&amijoy_mutex);
	return err;
}

static void amijoy_close(struct input_dev *dev)
{
	mutex_lock(&amijoy_mutex);
	if (!--amijoy_used)
		free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
	mutex_unlock(&amijoy_mutex);
}

static int __init amijoy_init(void)
{
	int i, j;
	int err;

	for (i = 0; i < 2; i++) {
		if (!amijoy[i])
			continue;

		amijoy_dev[i] = input_allocate_device();
		if (!amijoy_dev[i]) {
			err = -ENOMEM;
			goto fail;
		}

		if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
			input_free_device(amijoy_dev[i]);
			err = -EBUSY;
			goto fail;
		}

		amijoy_dev[i]->name = "Amiga joystick";
		amijoy_dev[i]->phys = amijoy_phys[i];
		amijoy_dev[i]->id.bustype = BUS_AMIGA;
		amijoy_dev[i]->id.vendor = 0x0001;
		amijoy_dev[i]->id.product = 0x0003;
		amijoy_dev[i]->id.version = 0x0100;

		amijoy_dev[i]->open = amijoy_open;
		amijoy_dev[i]->close = amijoy_close;

		amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
		amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
			BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
		for (j = 0; j < 2; j++) {
			input_set_abs_params(amijoy_dev[i], ABS_X + j,
					     -1, 1, 0, 0);
		}

		err = input_register_device(amijoy_dev[i]);
		if (err) {
			input_free_device(amijoy_dev[i]);
			goto fail;
		}
	}
	return 0;

 fail:	while (--i >= 0)
		if (amijoy[i]) {
			input_unregister_device(amijoy_dev[i]);
			release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
		}
	return err;
}

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);
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Copyright (c) 1998-2001 Vojtech Pavlik
	3	*/
	4
	5	/*
	6	* Driver for Amiga joysticks for Linux/m68k
	7	*/
	8
	9	/*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*
	24	* Should you need to contact me, the author, you can do so either by
	25	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	26	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	27	*/
	28
	29	#include <linux/types.h>
	30	#include <linux/errno.h>
	31	#include <linux/kernel.h>
	32	#include <linux/module.h>
1da177e4 LT	33	#include <linux/init.h>
	34	#include <linux/input.h>
	35	#include <linux/interrupt.h>
72ba9f0c	36	#include <linux/mutex.h>
1da177e4 LT	37
	38	#include <asm/system.h>
	39	#include <asm/amigahw.h>
	40	#include <asm/amigaints.h>
	41
	42	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	43	MODULE_DESCRIPTION("Driver for Amiga joysticks");
	44	MODULE_LICENSE("GPL");
	45
	46	static int amijoy[2] = { 0, 1 };
	47	module_param_array_named(map, amijoy, uint, NULL, 0);
	48	MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
	49
8b1a198b	50	static int amijoy_used;
72ba9f0c	51	static DEFINE_MUTEX(amijoy_mutex);
17dd3f0f	52	static struct input_dev *amijoy_dev[2];
1da177e4 LT	53	static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
1da177e4 LT	54
7d12e780	55	static irqreturn_t amijoy_interrupt(int irq, void *dummy)
1da177e4 LT	56	{
	57	int i, data = 0, button = 0;
	58
	59	for (i = 0; i < 2; i++)
	60	if (amijoy[i]) {
	61
	62	switch (i) {
b4290a23 AV	63	case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
b4290a23 AV	64	case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
1da177e4 LT	65	}
1da177e4 LT	66
17dd3f0f	67	input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
1da177e4	68
17dd3f0f	69	input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
1da177e4	70	data = ~(data ^ (data << 1));
17dd3f0f	71	input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
1da177e4	72
17dd3f0f	73	input_sync(amijoy_dev[i]);
1da177e4 LT	74	}
	75	return IRQ_HANDLED;
	76	}
	77
	78	static int amijoy_open(struct input_dev *dev)
	79	{
8b1a198b	80	int err;
1da177e4	81
72ba9f0c	82	err = mutex_lock_interruptible(&amijoy_mutex);
8b1a198b DT	83	if (err)
8b1a198b DT	84	return err;
1da177e4	85
8b1a198b	86	if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
1da177e4	87	printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
8b1a198b DT	88	err = -EBUSY;
8b1a198b DT	89	goto out;
1da177e4 LT	90	}
1da177e4 LT	91
8b1a198b DT	92	amijoy_used++;
8b1a198b DT	93	out:
72ba9f0c	94	mutex_unlock(&amijoy_mutex);
8b1a198b	95	return err;
1da177e4 LT	96	}
	97
	98	static void amijoy_close(struct input_dev *dev)
	99	{
72ba9f0c	100	mutex_lock(&amijoy_mutex);
8b1a198b	101	if (!--amijoy_used)
1da177e4	102	free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
72ba9f0c	103	mutex_unlock(&amijoy_mutex);
1da177e4 LT	104	}
	105
	106	static int __init amijoy_init(void)
	107	{
	108	int i, j;
17dd3f0f	109	int err;
1da177e4	110
17dd3f0f DT	111	for (i = 0; i < 2; i++) {
	112	if (!amijoy[i])
	113	continue;
1da177e4	114
17dd3f0f DT	115	amijoy_dev[i] = input_allocate_device();
	116	if (!amijoy_dev[i]) {
	117	err = -ENOMEM;
	118	goto fail;
	119	}
1da177e4	120
17dd3f0f DT	121	if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
	122	input_free_device(amijoy_dev[i]);
	123	err = -EBUSY;
	124	goto fail;
	125	}
1da177e4	126
17dd3f0f DT	127	amijoy_dev[i]->name = "Amiga joystick";
	128	amijoy_dev[i]->phys = amijoy_phys[i];
	129	amijoy_dev[i]->id.bustype = BUS_AMIGA;
	130	amijoy_dev[i]->id.vendor = 0x0001;
	131	amijoy_dev[i]->id.product = 0x0003;
	132	amijoy_dev[i]->id.version = 0x0100;
	133
	134	amijoy_dev[i]->open = amijoy_open;
	135	amijoy_dev[i]->close = amijoy_close;
	136
7b19ada2 JS	137	amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	138	amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y);
	139	amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	140	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
17dd3f0f	141	for (j = 0; j < 2; j++) {
b84ae4a1	142	input_set_abs_params(amijoy_dev[i], ABS_X + j,
987a6c02	143	-1, 1, 0, 0);
1da177e4	144	}
17dd3f0f	145
127278ce DT	146	err = input_register_device(amijoy_dev[i]);
	147	if (err) {
	148	input_free_device(amijoy_dev[i]);
	149	goto fail;
	150	}
17dd3f0f	151	}
1da177e4	152	return 0;
17dd3f0f DT	153
	154	fail: while (--i >= 0)
	155	if (amijoy[i]) {
	156	input_unregister_device(amijoy_dev[i]);
	157	release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
	158	}
	159	return err;
1da177e4 LT	160	}
	161
	162	static void __exit amijoy_exit(void)
	163	{
	164	int i;
	165
	166	for (i = 0; i < 2; i++)
	167	if (amijoy[i]) {
17dd3f0f DT	168	input_unregister_device(amijoy_dev[i]);
17dd3f0f DT	169	release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
1da177e4 LT	170	}
	171	}
	172
	173	module_init(amijoy_init);
	174	module_exit(amijoy_exit);