[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/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;

	if (!MACH_IS_AMIGA)
		return -ENODEV;

	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	37
1da177e4 LT	38	#include <asm/amigahw.h>
	39	#include <asm/amigaints.h>
	40
	41	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	42	MODULE_DESCRIPTION("Driver for Amiga joysticks");
	43	MODULE_LICENSE("GPL");
	44
	45	static int amijoy[2] = { 0, 1 };
	46	module_param_array_named(map, amijoy, uint, NULL, 0);
	47	MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
	48
8b1a198b	49	static int amijoy_used;
72ba9f0c	50	static DEFINE_MUTEX(amijoy_mutex);
17dd3f0f	51	static struct input_dev *amijoy_dev[2];
1da177e4 LT	52	static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
1da177e4 LT	53
7d12e780	54	static irqreturn_t amijoy_interrupt(int irq, void *dummy)
1da177e4 LT	55	{
	56	int i, data = 0, button = 0;
	57
	58	for (i = 0; i < 2; i++)
	59	if (amijoy[i]) {
	60
	61	switch (i) {
b4290a23 AV	62	case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
b4290a23 AV	63	case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
1da177e4 LT	64	}
1da177e4 LT	65
17dd3f0f	66	input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
1da177e4	67
17dd3f0f	68	input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
1da177e4	69	data = ~(data ^ (data << 1));
17dd3f0f	70	input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
1da177e4	71
17dd3f0f	72	input_sync(amijoy_dev[i]);
1da177e4 LT	73	}
	74	return IRQ_HANDLED;
	75	}
	76
	77	static int amijoy_open(struct input_dev *dev)
	78	{
8b1a198b	79	int err;
1da177e4	80
72ba9f0c	81	err = mutex_lock_interruptible(&amijoy_mutex);
8b1a198b DT	82	if (err)
8b1a198b DT	83	return err;
1da177e4	84
8b1a198b	85	if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
1da177e4	86	printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
8b1a198b DT	87	err = -EBUSY;
8b1a198b DT	88	goto out;
1da177e4 LT	89	}
1da177e4 LT	90
8b1a198b DT	91	amijoy_used++;
8b1a198b DT	92	out:
72ba9f0c	93	mutex_unlock(&amijoy_mutex);
8b1a198b	94	return err;
1da177e4 LT	95	}
	96
	97	static void amijoy_close(struct input_dev *dev)
	98	{
72ba9f0c	99	mutex_lock(&amijoy_mutex);
8b1a198b	100	if (!--amijoy_used)
1da177e4	101	free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
72ba9f0c	102	mutex_unlock(&amijoy_mutex);
1da177e4 LT	103	}
	104
	105	static int __init amijoy_init(void)
	106	{
	107	int i, j;
17dd3f0f	108	int err;
1da177e4	109
3183968c GU	110	if (!MACH_IS_AMIGA)
	111	return -ENODEV;
	112
17dd3f0f DT	113	for (i = 0; i < 2; i++) {
	114	if (!amijoy[i])
	115	continue;
1da177e4	116
17dd3f0f DT	117	amijoy_dev[i] = input_allocate_device();
	118	if (!amijoy_dev[i]) {
	119	err = -ENOMEM;
	120	goto fail;
	121	}
1da177e4	122
17dd3f0f DT	123	if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
	124	input_free_device(amijoy_dev[i]);
	125	err = -EBUSY;
	126	goto fail;
	127	}
1da177e4	128
17dd3f0f DT	129	amijoy_dev[i]->name = "Amiga joystick";
	130	amijoy_dev[i]->phys = amijoy_phys[i];
	131	amijoy_dev[i]->id.bustype = BUS_AMIGA;
	132	amijoy_dev[i]->id.vendor = 0x0001;
	133	amijoy_dev[i]->id.product = 0x0003;
	134	amijoy_dev[i]->id.version = 0x0100;
	135
	136	amijoy_dev[i]->open = amijoy_open;
	137	amijoy_dev[i]->close = amijoy_close;
	138
7b19ada2 JS	139	amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
	140	amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) \| BIT_MASK(ABS_Y);
	141	amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	142	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
17dd3f0f	143	for (j = 0; j < 2; j++) {
b84ae4a1	144	input_set_abs_params(amijoy_dev[i], ABS_X + j,
987a6c02	145	-1, 1, 0, 0);
1da177e4	146	}
17dd3f0f	147
127278ce DT	148	err = input_register_device(amijoy_dev[i]);
	149	if (err) {
	150	input_free_device(amijoy_dev[i]);
	151	goto fail;
	152	}
17dd3f0f	153	}
1da177e4	154	return 0;
17dd3f0f DT	155
	156	fail: while (--i >= 0)
	157	if (amijoy[i]) {
	158	input_unregister_device(amijoy_dev[i]);
	159	release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
	160	}
	161	return err;
1da177e4 LT	162	}
	163
	164	static void __exit amijoy_exit(void)
	165	{
	166	int i;
	167
	168	for (i = 0; i < 2; i++)
	169	if (amijoy[i]) {
17dd3f0f DT	170	input_unregister_device(amijoy_dev[i]);
17dd3f0f DT	171	release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
1da177e4 LT	172	}
	173	}
	174
	175	module_init(amijoy_init);
	176	module_exit(amijoy_exit);