[deliverable/linux.git] / drivers / input / joystick / turbografx.c

/*
 *  Copyright (c) 1998-2001 Vojtech Pavlik
 *
 *  Based on the work of:
 *	Steffen Schwenke
 */

/*
 * TurboGraFX parallel port interface driver for Linux.
 */

/*
 * 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/kernel.h>
#include <linux/parport.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/slab.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
MODULE_LICENSE("GPL");

#define TGFX_MAX_PORTS		3
#define TGFX_MAX_DEVICES	7

struct tgfx_config {
	int args[TGFX_MAX_DEVICES + 1];
	unsigned int nargs;
};

static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS];

module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0);
MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0);
MODULE_PARM_DESC(map2, "Describes second set of devices");
module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0);
MODULE_PARM_DESC(map3, "Describes third set of devices");

#define TGFX_REFRESH_TIME	HZ/100	/* 10 ms */

#define TGFX_TRIGGER		0x08
#define TGFX_UP			0x10
#define TGFX_DOWN		0x20
#define TGFX_LEFT		0x40
#define TGFX_RIGHT		0x80

#define TGFX_THUMB		0x02
#define TGFX_THUMB2		0x04
#define TGFX_TOP		0x01
#define TGFX_TOP2		0x08

static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };

static struct tgfx {
	struct pardevice *pd;
	struct timer_list timer;
	struct input_dev *dev[TGFX_MAX_DEVICES];
	char name[TGFX_MAX_DEVICES][64];
	char phys[TGFX_MAX_DEVICES][32];
	int sticks;
	int used;
	int parportno;
	struct mutex sem;
} *tgfx_base[TGFX_MAX_PORTS];

/*
 * tgfx_timer() reads and analyzes TurboGraFX joystick data.
 */

static void tgfx_timer(unsigned long private)
{
	struct tgfx *tgfx = (void *) private;
	struct input_dev *dev;
	int data1, data2, i;

	for (i = 0; i < 7; i++)
		if (tgfx->sticks & (1 << i)) {

			dev = tgfx->dev[i];

			parport_write_data(tgfx->pd->port, ~(1 << i));
			data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
			data2 = parport_read_control(tgfx->pd->port) ^ 0x04;	/* CAVEAT parport */

			input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
			input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP  ));

			input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
			input_report_key(dev, BTN_THUMB,   (data2 & TGFX_THUMB  ));
			input_report_key(dev, BTN_THUMB2,  (data2 & TGFX_THUMB2 ));
			input_report_key(dev, BTN_TOP,     (data2 & TGFX_TOP    ));
			input_report_key(dev, BTN_TOP2,    (data2 & TGFX_TOP2   ));

			input_sync(dev);
		}

	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
}

static int tgfx_open(struct input_dev *dev)
{
	struct tgfx *tgfx = input_get_drvdata(dev);
	int err;

	err = mutex_lock_interruptible(&tgfx->sem);
	if (err)
		return err;

	if (!tgfx->used++) {
		parport_claim(tgfx->pd);
		parport_write_control(tgfx->pd->port, 0x04);
		mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
	}

	mutex_unlock(&tgfx->sem);
	return 0;
}

static void tgfx_close(struct input_dev *dev)
{
	struct tgfx *tgfx = input_get_drvdata(dev);

	mutex_lock(&tgfx->sem);
	if (!--tgfx->used) {
		del_timer_sync(&tgfx->timer);
		parport_write_control(tgfx->pd->port, 0x00);
		parport_release(tgfx->pd);
	}
	mutex_unlock(&tgfx->sem);
}


/*
 * tgfx_probe() probes for tg gamepads.
 */

static void tgfx_attach(struct parport *pp)
{
	struct tgfx *tgfx;
	struct input_dev *input_dev;
	struct pardevice *pd;
	int i, j, port_idx;
	int *n_buttons, n_devs;
	struct pardev_cb tgfx_parport_cb;

	for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) {
		if (tgfx_cfg[port_idx].nargs == 0 ||
		    tgfx_cfg[port_idx].args[0] < 0)
			continue;
		if (tgfx_cfg[port_idx].args[0] == pp->number)
			break;
	}

	if (port_idx == TGFX_MAX_PORTS) {
		pr_debug("Not using parport%d.\n", pp->number);
		return;
	}
	n_buttons = tgfx_cfg[port_idx].args + 1;
	n_devs = tgfx_cfg[port_idx].nargs - 1;

	memset(&tgfx_parport_cb, 0, sizeof(tgfx_parport_cb));
	tgfx_parport_cb.flags = PARPORT_FLAG_EXCL;

	pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb,
					port_idx);
	if (!pd) {
		pr_err("parport busy already - lp.o loaded?\n");
		return;
	}

	tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
	if (!tgfx) {
		printk(KERN_ERR "turbografx.c: Not enough memory\n");
		goto err_unreg_pardev;
	}

	mutex_init(&tgfx->sem);
	tgfx->pd = pd;
	tgfx->parportno = pp->number;
	init_timer(&tgfx->timer);
	tgfx->timer.data = (long) tgfx;
	tgfx->timer.function = tgfx_timer;

	for (i = 0; i < n_devs; i++) {
		if (n_buttons[i] < 1)
			continue;

		if (n_buttons[i] > ARRAY_SIZE(tgfx_buttons)) {
			printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
			goto err_unreg_devs;
		}

		tgfx->dev[i] = input_dev = input_allocate_device();
		if (!input_dev) {
			printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
			goto err_unreg_devs;
		}

		tgfx->sticks |= (1 << i);
		snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
			 "TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
		snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
			 "%s/input%d", tgfx->pd->port->name, i);

		input_dev->name = tgfx->name[i];
		input_dev->phys = tgfx->phys[i];
		input_dev->id.bustype = BUS_PARPORT;
		input_dev->id.vendor = 0x0003;
		input_dev->id.product = n_buttons[i];
		input_dev->id.version = 0x0100;

		input_set_drvdata(input_dev, tgfx);

		input_dev->open = tgfx_open;
		input_dev->close = tgfx_close;

		input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
		input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
		input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);

		for (j = 0; j < n_buttons[i]; j++)
			set_bit(tgfx_buttons[j], input_dev->keybit);

		if (input_register_device(tgfx->dev[i]))
			goto err_free_dev;
	}

        if (!tgfx->sticks) {
		printk(KERN_ERR "turbografx.c: No valid devices specified\n");
		goto err_free_tgfx;
        }

	tgfx_base[port_idx] = tgfx;
	return;

 err_free_dev:
	input_free_device(tgfx->dev[i]);
 err_unreg_devs:
	while (--i >= 0)
		if (tgfx->dev[i])
			input_unregister_device(tgfx->dev[i]);
 err_free_tgfx:
	kfree(tgfx);
 err_unreg_pardev:
	parport_unregister_device(pd);
}

static void tgfx_detach(struct parport *port)
{
	int i;
	struct tgfx *tgfx;

	for (i = 0; i < TGFX_MAX_PORTS; i++) {
		if (tgfx_base[i] && tgfx_base[i]->parportno == port->number)
			break;
	}

	if (i == TGFX_MAX_PORTS)
		return;

	tgfx = tgfx_base[i];
	tgfx_base[i] = NULL;

	for (i = 0; i < TGFX_MAX_DEVICES; i++)
		if (tgfx->dev[i])
			input_unregister_device(tgfx->dev[i]);
	parport_unregister_device(tgfx->pd);
	kfree(tgfx);
}

static struct parport_driver tgfx_parport_driver = {
	.name = "turbografx",
	.match_port = tgfx_attach,
	.detach = tgfx_detach,
	.devmodel = true,
};

static int __init tgfx_init(void)
{
	int i;
	int have_dev = 0;

	for (i = 0; i < TGFX_MAX_PORTS; i++) {
		if (tgfx_cfg[i].nargs == 0 || tgfx_cfg[i].args[0] < 0)
			continue;

		if (tgfx_cfg[i].nargs < 2) {
			printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
			return -EINVAL;
		}

		have_dev = 1;
	}

	if (!have_dev)
		return -ENODEV;

	return parport_register_driver(&tgfx_parport_driver);
}

static void __exit tgfx_exit(void)
{
	parport_unregister_driver(&tgfx_parport_driver);
}

module_init(tgfx_init);
module_exit(tgfx_exit);
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Copyright (c) 1998-2001 Vojtech Pavlik
	3	*
	4	* Based on the work of:
	5	* Steffen Schwenke
	6	*/
	7
	8	/*
	9	* TurboGraFX parallel port interface driver for Linux.
	10	*/
	11
	12	/*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	26	*
	27	* Should you need to contact me, the author, you can do so either by
	28	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	29	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	30	*/
	31
	32	#include <linux/kernel.h>
	33	#include <linux/parport.h>
	34	#include <linux/input.h>
	35	#include <linux/module.h>
1da177e4	36	#include <linux/init.h>
72ba9f0c	37	#include <linux/mutex.h>
5a0e3ad6	38	#include <linux/slab.h>
1da177e4 LT	39
	40	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	41	MODULE_DESCRIPTION("TurboGraFX parallel port interface driver");
	42	MODULE_LICENSE("GPL");
	43
17dd3f0f DT	44	#define TGFX_MAX_PORTS 3
17dd3f0f DT	45	#define TGFX_MAX_DEVICES 7
1da177e4	46
17dd3f0f DT	47	struct tgfx_config {
17dd3f0f DT	48	int args[TGFX_MAX_DEVICES + 1];
78167236	49	unsigned int nargs;
17dd3f0f DT	50	};
17dd3f0f DT	51
4de27a63	52	static struct tgfx_config tgfx_cfg[TGFX_MAX_PORTS];
1da177e4	53
78167236	54	module_param_array_named(map, tgfx_cfg[0].args, int, &tgfx_cfg[0].nargs, 0);
17dd3f0f	55	MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>");
78167236	56	module_param_array_named(map2, tgfx_cfg[1].args, int, &tgfx_cfg[1].nargs, 0);
17dd3f0f	57	MODULE_PARM_DESC(map2, "Describes second set of devices");
78167236	58	module_param_array_named(map3, tgfx_cfg[2].args, int, &tgfx_cfg[2].nargs, 0);
1da177e4 LT	59	MODULE_PARM_DESC(map3, "Describes third set of devices");
1da177e4 LT	60
1da177e4 LT	61	#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */
	62
	63	#define TGFX_TRIGGER 0x08
	64	#define TGFX_UP 0x10
	65	#define TGFX_DOWN 0x20
	66	#define TGFX_LEFT 0x40
	67	#define TGFX_RIGHT 0x80
	68
	69	#define TGFX_THUMB 0x02
	70	#define TGFX_THUMB2 0x04
	71	#define TGFX_TOP 0x01
	72	#define TGFX_TOP2 0x08
	73
	74	static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 };
1da177e4 LT	75
	76	static struct tgfx {
	77	struct pardevice *pd;
	78	struct timer_list timer;
17dd3f0f DT	79	struct input_dev *dev[TGFX_MAX_DEVICES];
	80	char name[TGFX_MAX_DEVICES][64];
	81	char phys[TGFX_MAX_DEVICES][32];
1da177e4 LT	82	int sticks;
1da177e4 LT	83	int used;
4de27a63	84	int parportno;
72ba9f0c	85	struct mutex sem;
17dd3f0f	86	} *tgfx_base[TGFX_MAX_PORTS];
1da177e4 LT	87
	88	/*
	89	* tgfx_timer() reads and analyzes TurboGraFX joystick data.
	90	*/
	91
	92	static void tgfx_timer(unsigned long private)
	93	{
	94	struct tgfx tgfx = (void ) private;
	95	struct input_dev *dev;
	96	int data1, data2, i;
	97
	98	for (i = 0; i < 7; i++)
	99	if (tgfx->sticks & (1 << i)) {
	100
17dd3f0f	101	dev = tgfx->dev[i];
1da177e4 LT	102
	103	parport_write_data(tgfx->pd->port, ~(1 << i));
	104	data1 = parport_read_status(tgfx->pd->port) ^ 0x7f;
	105	data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */
	106
	107	input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT));
	108	input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP ));
	109
	110	input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER));
	111	input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB ));
	112	input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 ));
	113	input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP ));
	114	input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 ));
	115
	116	input_sync(dev);
	117	}
	118
	119	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
	120	}
	121
	122	static int tgfx_open(struct input_dev *dev)
	123	{
8715c1cf	124	struct tgfx *tgfx = input_get_drvdata(dev);
8b1a198b DT	125	int err;
8b1a198b DT	126
72ba9f0c	127	err = mutex_lock_interruptible(&tgfx->sem);
8b1a198b DT	128	if (err)
	129	return err;
	130
ab0c3443	131	if (!tgfx->used++) {
1da177e4 LT	132	parport_claim(tgfx->pd);
1da177e4 LT	133	parport_write_control(tgfx->pd->port, 0x04);
ab0c3443	134	mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME);
1da177e4	135	}
8b1a198b	136
72ba9f0c	137	mutex_unlock(&tgfx->sem);
ab0c3443	138	return 0;
1da177e4 LT	139	}
	140
	141	static void tgfx_close(struct input_dev *dev)
	142	{
8715c1cf	143	struct tgfx *tgfx = input_get_drvdata(dev);
8b1a198b	144
72ba9f0c	145	mutex_lock(&tgfx->sem);
ab0c3443	146	if (!--tgfx->used) {
8b1a198b	147	del_timer_sync(&tgfx->timer);
1da177e4	148	parport_write_control(tgfx->pd->port, 0x00);
ab0c3443	149	parport_release(tgfx->pd);
1da177e4	150	}
72ba9f0c	151	mutex_unlock(&tgfx->sem);
1da177e4 LT	152	}
1da177e4 LT	153
17dd3f0f DT	154
17dd3f0f DT	155
1da177e4 LT	156	/*
	157	* tgfx_probe() probes for tg gamepads.
	158	*/
	159
4de27a63	160	static void tgfx_attach(struct parport *pp)
1da177e4 LT	161	{
1da177e4 LT	162	struct tgfx *tgfx;
17dd3f0f	163	struct input_dev *input_dev;
17dd3f0f	164	struct pardevice *pd;
c65cf815	165	int i, j, port_idx;
4de27a63 SM	166	int *n_buttons, n_devs;
	167	struct pardev_cb tgfx_parport_cb;
	168
c65cf815 SM	169	for (port_idx = 0; port_idx < TGFX_MAX_PORTS; port_idx++) {
	170	if (tgfx_cfg[port_idx].nargs == 0 \|\|
	171	tgfx_cfg[port_idx].args[0] < 0)
4de27a63	172	continue;
c65cf815	173	if (tgfx_cfg[port_idx].args[0] == pp->number)
4de27a63 SM	174	break;
4de27a63 SM	175	}
1da177e4	176
c65cf815	177	if (port_idx == TGFX_MAX_PORTS) {
4de27a63 SM	178	pr_debug("Not using parport%d.\n", pp->number);
4de27a63 SM	179	return;
1da177e4	180	}
c65cf815 SM	181	n_buttons = tgfx_cfg[port_idx].args + 1;
c65cf815 SM	182	n_devs = tgfx_cfg[port_idx].nargs - 1;
1da177e4	183
3855e9e4	184	memset(&tgfx_parport_cb, 0, sizeof(tgfx_parport_cb));
4de27a63 SM	185	tgfx_parport_cb.flags = PARPORT_FLAG_EXCL;
4de27a63 SM	186
c65cf815 SM	187	pd = parport_register_dev_model(pp, "turbografx", &tgfx_parport_cb,
c65cf815 SM	188	port_idx);
17dd3f0f	189	if (!pd) {
4de27a63 SM	190	pr_err("parport busy already - lp.o loaded?\n");
4de27a63 SM	191	return;
1da177e4	192	}
8b1a198b	193
17dd3f0f DT	194	tgfx = kzalloc(sizeof(struct tgfx), GFP_KERNEL);
	195	if (!tgfx) {
	196	printk(KERN_ERR "turbografx.c: Not enough memory\n");
17dd3f0f	197	goto err_unreg_pardev;
1da177e4 LT	198	}
1da177e4 LT	199
72ba9f0c	200	mutex_init(&tgfx->sem);
17dd3f0f	201	tgfx->pd = pd;
4de27a63	202	tgfx->parportno = pp->number;
1da177e4 LT	203	init_timer(&tgfx->timer);
	204	tgfx->timer.data = (long) tgfx;
	205	tgfx->timer.function = tgfx_timer;
	206
17dd3f0f DT	207	for (i = 0; i < n_devs; i++) {
	208	if (n_buttons[i] < 1)
	209	continue;
1da177e4	210
c20bc550	211	if (n_buttons[i] > ARRAY_SIZE(tgfx_buttons)) {
17dd3f0f	212	printk(KERN_ERR "turbografx.c: Invalid number of buttons %d\n", n_buttons[i]);
ab52cd66	213	goto err_unreg_devs;
17dd3f0f	214	}
1da177e4	215
17dd3f0f DT	216	tgfx->dev[i] = input_dev = input_allocate_device();
	217	if (!input_dev) {
	218	printk(KERN_ERR "turbografx.c: Not enough memory for input device\n");
ab52cd66	219	goto err_unreg_devs;
17dd3f0f	220	}
1da177e4	221
17dd3f0f DT	222	tgfx->sticks \|= (1 << i);
	223	snprintf(tgfx->name[i], sizeof(tgfx->name[i]),
	224	"TurboGraFX %d-button Multisystem joystick", n_buttons[i]);
	225	snprintf(tgfx->phys[i], sizeof(tgfx->phys[i]),
	226	"%s/input%d", tgfx->pd->port->name, i);
1da177e4	227
17dd3f0f DT	228	input_dev->name = tgfx->name[i];
	229	input_dev->phys = tgfx->phys[i];
	230	input_dev->id.bustype = BUS_PARPORT;
	231	input_dev->id.vendor = 0x0003;
	232	input_dev->id.product = n_buttons[i];
	233	input_dev->id.version = 0x0100;
1da177e4	234
8715c1cf DT	235	input_set_drvdata(input_dev, tgfx);
8715c1cf DT	236
17dd3f0f DT	237	input_dev->open = tgfx_open;
17dd3f0f DT	238	input_dev->close = tgfx_close;
1da177e4	239
7b19ada2	240	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
17dd3f0f DT	241	input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
17dd3f0f DT	242	input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);
1da177e4	243
17dd3f0f DT	244	for (j = 0; j < n_buttons[i]; j++)
17dd3f0f DT	245	set_bit(tgfx_buttons[j], input_dev->keybit);
1da177e4	246
4de27a63	247	if (input_register_device(tgfx->dev[i]))
ab52cd66	248	goto err_free_dev;
17dd3f0f	249	}
1da177e4 LT	250
1da177e4 LT	251	if (!tgfx->sticks) {
17dd3f0f	252	printk(KERN_ERR "turbografx.c: No valid devices specified\n");
17dd3f0f	253	goto err_free_tgfx;
1da177e4 LT	254	}
1da177e4 LT	255
c65cf815	256	tgfx_base[port_idx] = tgfx;
4de27a63	257	return;
17dd3f0f	258
ab52cd66 DT	259	err_free_dev:
	260	input_free_device(tgfx->dev[i]);
	261	err_unreg_devs:
17dd3f0f	262	while (--i >= 0)
ab52cd66 DT	263	if (tgfx->dev[i])
ab52cd66 DT	264	input_unregister_device(tgfx->dev[i]);
17dd3f0f DT	265	err_free_tgfx:
	266	kfree(tgfx);
	267	err_unreg_pardev:
	268	parport_unregister_device(pd);
17dd3f0f DT	269	}
17dd3f0f DT	270
4de27a63	271	static void tgfx_detach(struct parport *port)
17dd3f0f DT	272	{
17dd3f0f DT	273	int i;
4de27a63 SM	274	struct tgfx *tgfx;
	275
	276	for (i = 0; i < TGFX_MAX_PORTS; i++) {
	277	if (tgfx_base[i] && tgfx_base[i]->parportno == port->number)
	278	break;
	279	}
	280
	281	if (i == TGFX_MAX_PORTS)
	282	return;
	283
	284	tgfx = tgfx_base[i];
	285	tgfx_base[i] = NULL;
17dd3f0f DT	286
	287	for (i = 0; i < TGFX_MAX_DEVICES; i++)
	288	if (tgfx->dev[i])
	289	input_unregister_device(tgfx->dev[i]);
	290	parport_unregister_device(tgfx->pd);
	291	kfree(tgfx);
1da177e4 LT	292	}
1da177e4 LT	293
4de27a63 SM	294	static struct parport_driver tgfx_parport_driver = {
	295	.name = "turbografx",
	296	.match_port = tgfx_attach,
	297	.detach = tgfx_detach,
	298	.devmodel = true,
	299	};
	300
1da177e4 LT	301	static int __init tgfx_init(void)
1da177e4 LT	302	{
17dd3f0f DT	303	int i;
17dd3f0f DT	304	int have_dev = 0;
17dd3f0f DT	305
17dd3f0f DT	306	for (i = 0; i < TGFX_MAX_PORTS; i++) {
78167236	307	if (tgfx_cfg[i].nargs == 0 \|\| tgfx_cfg[i].args[0] < 0)
17dd3f0f DT	308	continue;
17dd3f0f DT	309
78167236	310	if (tgfx_cfg[i].nargs < 2) {
17dd3f0f	311	printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n");
4de27a63	312	return -EINVAL;
17dd3f0f DT	313	}
	314
	315	have_dev = 1;
	316	}
1da177e4	317
4de27a63 SM	318	if (!have_dev)
4de27a63 SM	319	return -ENODEV;
1da177e4	320
4de27a63	321	return parport_register_driver(&tgfx_parport_driver);
1da177e4 LT	322	}
	323
	324	static void __exit tgfx_exit(void)
	325	{
4de27a63	326	parport_unregister_driver(&tgfx_parport_driver);
1da177e4 LT	327	}
	328
	329	module_init(tgfx_init);
	330	module_exit(tgfx_exit);