[linux-2.6-block.git] / drivers / input / joystick / guillemot.c

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

/*
 * Guillemot Digital Interface Protocol 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/slab.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/input.h>
#include <linux/jiffies.h>

#define DRIVER_DESC	"Guillemot Digital joystick driver"

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

#define GUILLEMOT_MAX_START	600	/* 600 us */
#define GUILLEMOT_MAX_STROBE	60	/* 60 us */
#define GUILLEMOT_MAX_LENGTH	17	/* 17 bytes */

static short guillemot_abs_pad[] =
	{ ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, -1 };

static short guillemot_btn_pad[] =
	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_MODE, BTN_SELECT, -1 };

static struct {
        int x;
        int y;
} guillemot_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};

struct guillemot_type {
	unsigned char id;
	short *abs;
	short *btn;
	int hat;
	char *name;
};

struct guillemot {
	struct gameport *gameport;
	struct input_dev *dev;
	int bads;
	int reads;
	struct guillemot_type *type;
	unsigned char length;
	char phys[32];
};

static struct guillemot_type guillemot_type[] = {
	{ 0x00, guillemot_abs_pad, guillemot_btn_pad, 1, "Guillemot Pad" },
	{ 0 }};

/*
 * guillemot_read_packet() reads Guillemot joystick data.
 */

static int guillemot_read_packet(struct gameport *gameport, u8 *data)
{
	unsigned long flags;
	unsigned char u, v;
	unsigned int t, s;
	int i;

	for (i = 0; i < GUILLEMOT_MAX_LENGTH; i++)
		data[i] = 0;

	i = 0;
	t = gameport_time(gameport, GUILLEMOT_MAX_START);
	s = gameport_time(gameport, GUILLEMOT_MAX_STROBE);

	local_irq_save(flags);
	gameport_trigger(gameport);
	v = gameport_read(gameport);

	while (t > 0 && i < GUILLEMOT_MAX_LENGTH * 8) {
		t--;
		u = v; v = gameport_read(gameport);
		if (v & ~u & 0x10) {
			data[i >> 3] |= ((v >> 5) & 1) << (i & 7);
			i++;
			t = s;
		}
	}

	local_irq_restore(flags);

	return i;
}

/*
 * guillemot_poll() reads and analyzes Guillemot joystick data.
 */

static void guillemot_poll(struct gameport *gameport)
{
	struct guillemot *guillemot = gameport_get_drvdata(gameport);
	struct input_dev *dev = guillemot->dev;
	u8 data[GUILLEMOT_MAX_LENGTH];
	int i;

	guillemot->reads++;

	if (guillemot_read_packet(guillemot->gameport, data) != GUILLEMOT_MAX_LENGTH * 8 ||
		data[0] != 0x55 || data[16] != 0xaa) {
		guillemot->bads++;
	} else {

		for (i = 0; i < 6 && guillemot->type->abs[i] >= 0; i++)
			input_report_abs(dev, guillemot->type->abs[i], data[i + 5]);

		if (guillemot->type->hat) {
			input_report_abs(dev, ABS_HAT0X, guillemot_hat_to_axis[data[4] >> 4].x);
			input_report_abs(dev, ABS_HAT0Y, guillemot_hat_to_axis[data[4] >> 4].y);
		}

		for (i = 0; i < 16 && guillemot->type->btn[i] >= 0; i++)
			input_report_key(dev, guillemot->type->btn[i], (data[2 + (i >> 3)] >> (i & 7)) & 1);
	}

	input_sync(dev);
}

/*
 * guillemot_open() is a callback from the input open routine.
 */

static int guillemot_open(struct input_dev *dev)
{
	struct guillemot *guillemot = input_get_drvdata(dev);

	gameport_start_polling(guillemot->gameport);
	return 0;
}

/*
 * guillemot_close() is a callback from the input close routine.
 */

static void guillemot_close(struct input_dev *dev)
{
	struct guillemot *guillemot = input_get_drvdata(dev);

	gameport_stop_polling(guillemot->gameport);
}

/*
 * guillemot_connect() probes for Guillemot joysticks.
 */

static int guillemot_connect(struct gameport *gameport, struct gameport_driver *drv)
{
	struct guillemot *guillemot;
	struct input_dev *input_dev;
	u8 data[GUILLEMOT_MAX_LENGTH];
	int i, t;
	int err;

	guillemot = kzalloc(sizeof(struct guillemot), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!guillemot || !input_dev) {
		err = -ENOMEM;
		goto fail1;
	}

	guillemot->gameport = gameport;
	guillemot->dev = input_dev;

	gameport_set_drvdata(gameport, guillemot);

	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
	if (err)
		goto fail1;

	i = guillemot_read_packet(gameport, data);

	if (i != GUILLEMOT_MAX_LENGTH * 8 || data[0] != 0x55 || data[16] != 0xaa) {
		err = -ENODEV;
		goto fail2;
	}

	for (i = 0; guillemot_type[i].name; i++)
		if (guillemot_type[i].id == data[11])
			break;

	if (!guillemot_type[i].name) {
		printk(KERN_WARNING "guillemot.c: Unknown joystick on %s. [ %02x%02x:%04x, ver %d.%02d ]\n",
			gameport->phys, data[12], data[13], data[11], data[14], data[15]);
		err = -ENODEV;
		goto fail2;
	}

	gameport_set_poll_handler(gameport, guillemot_poll);
	gameport_set_poll_interval(gameport, 20);

	snprintf(guillemot->phys, sizeof(guillemot->phys), "%s/input0", gameport->phys);
	guillemot->type = guillemot_type + i;

	input_dev->name = guillemot_type[i].name;
	input_dev->phys = guillemot->phys;
	input_dev->id.bustype = BUS_GAMEPORT;
	input_dev->id.vendor = GAMEPORT_ID_VENDOR_GUILLEMOT;
	input_dev->id.product = guillemot_type[i].id;
	input_dev->id.version = (int)data[14] << 8 | data[15];
	input_dev->dev.parent = &gameport->dev;

	input_set_drvdata(input_dev, guillemot);

	input_dev->open = guillemot_open;
	input_dev->close = guillemot_close;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);

	for (i = 0; (t = guillemot->type->abs[i]) >= 0; i++)
		input_set_abs_params(input_dev, t, 0, 255, 0, 0);

	if (guillemot->type->hat) {
		input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
		input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
	}

	for (i = 0; (t = guillemot->type->btn[i]) >= 0; i++)
		set_bit(t, input_dev->keybit);

	err = input_register_device(guillemot->dev);
	if (err)
		goto fail2;

	return 0;

fail2:	gameport_close(gameport);
fail1:  gameport_set_drvdata(gameport, NULL);
	input_free_device(input_dev);
	kfree(guillemot);
	return err;
}

static void guillemot_disconnect(struct gameport *gameport)
{
	struct guillemot *guillemot = gameport_get_drvdata(gameport);

	printk(KERN_INFO "guillemot.c: Failed %d reads out of %d on %s\n", guillemot->reads, guillemot->bads, guillemot->phys);
	input_unregister_device(guillemot->dev);
	gameport_close(gameport);
	kfree(guillemot);
}

static struct gameport_driver guillemot_drv = {
	.driver		= {
		.name	= "guillemot",
	},
	.description	= DRIVER_DESC,
	.connect	= guillemot_connect,
	.disconnect	= guillemot_disconnect,
};

static int __init guillemot_init(void)
{
	return gameport_register_driver(&guillemot_drv);
}

static void __exit guillemot_exit(void)
{
	gameport_unregister_driver(&guillemot_drv);
}

module_init(guillemot_init);
module_exit(guillemot_exit);
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Copyright (c) 2001 Vojtech Pavlik
	3	*/
	4
	5	/*
	6	* Guillemot Digital Interface Protocol driver for Linux
	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/kernel.h>
	30	#include <linux/slab.h>
	31	#include <linux/module.h>
	32	#include <linux/delay.h>
	33	#include <linux/init.h>
	34	#include <linux/gameport.h>
	35	#include <linux/input.h>
4e57b681	36	#include <linux/jiffies.h>
1da177e4 LT	37
	38	#define DRIVER_DESC "Guillemot Digital joystick driver"
	39
	40	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	41	MODULE_DESCRIPTION(DRIVER_DESC);
	42	MODULE_LICENSE("GPL");
	43
	44	#define GUILLEMOT_MAX_START 600 /* 600 us */
	45	#define GUILLEMOT_MAX_STROBE 60 /* 60 us */
	46	#define GUILLEMOT_MAX_LENGTH 17 /* 17 bytes */
	47
	48	static short guillemot_abs_pad[] =
	49	{ ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, -1 };
	50
	51	static short guillemot_btn_pad[] =
	52	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_MODE, BTN_SELECT, -1 };
	53
	54	static struct {
	55	int x;
	56	int y;
	57	} guillemot_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
	58
	59	struct guillemot_type {
	60	unsigned char id;
	61	short *abs;
	62	short *btn;
	63	int hat;
	64	char *name;
	65	};
	66
	67	struct guillemot {
	68	struct gameport *gameport;
17dd3f0f	69	struct input_dev *dev;
1da177e4 LT	70	int bads;
	71	int reads;
	72	struct guillemot_type *type;
	73	unsigned char length;
	74	char phys[32];
	75	};
	76
	77	static struct guillemot_type guillemot_type[] = {
	78	{ 0x00, guillemot_abs_pad, guillemot_btn_pad, 1, "Guillemot Pad" },
	79	{ 0 }};
	80
	81	/*
	82	* guillemot_read_packet() reads Guillemot joystick data.
	83	*/
	84
	85	static int guillemot_read_packet(struct gameport gameport, u8 data)
	86	{
	87	unsigned long flags;
	88	unsigned char u, v;
	89	unsigned int t, s;
	90	int i;
	91
	92	for (i = 0; i < GUILLEMOT_MAX_LENGTH; i++)
	93	data[i] = 0;
	94
	95	i = 0;
	96	t = gameport_time(gameport, GUILLEMOT_MAX_START);
	97	s = gameport_time(gameport, GUILLEMOT_MAX_STROBE);
	98
	99	local_irq_save(flags);
	100	gameport_trigger(gameport);
	101	v = gameport_read(gameport);
	102
	103	while (t > 0 && i < GUILLEMOT_MAX_LENGTH * 8) {
	104	t--;
	105	u = v; v = gameport_read(gameport);
	106	if (v & ~u & 0x10) {
	107	data[i >> 3] \|= ((v >> 5) & 1) << (i & 7);
	108	i++;
	109	t = s;
	110	}
	111	}
	112
	113	local_irq_restore(flags);
	114
	115	return i;
	116	}
	117
	118	/*
	119	* guillemot_poll() reads and analyzes Guillemot joystick data.
	120	*/
	121
	122	static void guillemot_poll(struct gameport *gameport)
	123	{
	124	struct guillemot *guillemot = gameport_get_drvdata(gameport);
17dd3f0f	125	struct input_dev *dev = guillemot->dev;
1da177e4 LT	126	u8 data[GUILLEMOT_MAX_LENGTH];
	127	int i;
	128
	129	guillemot->reads++;
	130
	131	if (guillemot_read_packet(guillemot->gameport, data) != GUILLEMOT_MAX_LENGTH * 8 \|\|
	132	data[0] != 0x55 \|\| data[16] != 0xaa) {
	133	guillemot->bads++;
	134	} else {
	135
	136	for (i = 0; i < 6 && guillemot->type->abs[i] >= 0; i++)
	137	input_report_abs(dev, guillemot->type->abs[i], data[i + 5]);
	138
	139	if (guillemot->type->hat) {
	140	input_report_abs(dev, ABS_HAT0X, guillemot_hat_to_axis[data[4] >> 4].x);
	141	input_report_abs(dev, ABS_HAT0Y, guillemot_hat_to_axis[data[4] >> 4].y);
	142	}
	143
	144	for (i = 0; i < 16 && guillemot->type->btn[i] >= 0; i++)
	145	input_report_key(dev, guillemot->type->btn[i], (data[2 + (i >> 3)] >> (i & 7)) & 1);
	146	}
	147
	148	input_sync(dev);
	149	}
	150
	151	/*
	152	* guillemot_open() is a callback from the input open routine.
	153	*/
	154
	155	static int guillemot_open(struct input_dev *dev)
	156	{
8715c1cf	157	struct guillemot *guillemot = input_get_drvdata(dev);
1da177e4 LT	158
	159	gameport_start_polling(guillemot->gameport);
	160	return 0;
	161	}
	162
	163	/*
	164	* guillemot_close() is a callback from the input close routine.
	165	*/
	166
	167	static void guillemot_close(struct input_dev *dev)
	168	{
8715c1cf	169	struct guillemot *guillemot = input_get_drvdata(dev);
1da177e4 LT	170
	171	gameport_stop_polling(guillemot->gameport);
	172	}
	173
	174	/*
	175	* guillemot_connect() probes for Guillemot joysticks.
	176	*/
	177
	178	static int guillemot_connect(struct gameport gameport, struct gameport_driver drv)
	179	{
	180	struct guillemot *guillemot;
17dd3f0f	181	struct input_dev *input_dev;
1da177e4 LT	182	u8 data[GUILLEMOT_MAX_LENGTH];
	183	int i, t;
	184	int err;
	185
17dd3f0f DT	186	guillemot = kzalloc(sizeof(struct guillemot), GFP_KERNEL);
	187	input_dev = input_allocate_device();
	188	if (!guillemot \|\| !input_dev) {
	189	err = -ENOMEM;
	190	goto fail1;
	191	}
1da177e4 LT	192
1da177e4 LT	193	guillemot->gameport = gameport;
17dd3f0f	194	guillemot->dev = input_dev;
1da177e4 LT	195
	196	gameport_set_drvdata(gameport, guillemot);
	197
	198	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
	199	if (err)
	200	goto fail1;
	201
	202	i = guillemot_read_packet(gameport, data);
	203
	204	if (i != GUILLEMOT_MAX_LENGTH * 8 \|\| data[0] != 0x55 \|\| data[16] != 0xaa) {
	205	err = -ENODEV;
	206	goto fail2;
	207	}
	208
	209	for (i = 0; guillemot_type[i].name; i++)
	210	if (guillemot_type[i].id == data[11])
	211	break;
	212
	213	if (!guillemot_type[i].name) {
	214	printk(KERN_WARNING "guillemot.c: Unknown joystick on %s. [ %02x%02x:%04x, ver %d.%02d ]\n",
	215	gameport->phys, data[12], data[13], data[11], data[14], data[15]);
	216	err = -ENODEV;
	217	goto fail2;
	218	}
	219
	220	gameport_set_poll_handler(gameport, guillemot_poll);
	221	gameport_set_poll_interval(gameport, 20);
	222
10ca4c0a	223	snprintf(guillemot->phys, sizeof(guillemot->phys), "%s/input0", gameport->phys);
1da177e4 LT	224	guillemot->type = guillemot_type + i;
1da177e4 LT	225
17dd3f0f DT	226	input_dev->name = guillemot_type[i].name;
	227	input_dev->phys = guillemot->phys;
	228	input_dev->id.bustype = BUS_GAMEPORT;
	229	input_dev->id.vendor = GAMEPORT_ID_VENDOR_GUILLEMOT;
	230	input_dev->id.product = guillemot_type[i].id;
	231	input_dev->id.version = (int)data[14] << 8 \| data[15];
935e658e	232	input_dev->dev.parent = &gameport->dev;
8715c1cf DT	233
8715c1cf DT	234	input_set_drvdata(input_dev, guillemot);
1da177e4	235
17dd3f0f DT	236	input_dev->open = guillemot_open;
17dd3f0f DT	237	input_dev->close = guillemot_close;
1da177e4	238
7b19ada2	239	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_ABS);
1da177e4 LT	240
1da177e4 LT	241	for (i = 0; (t = guillemot->type->abs[i]) >= 0; i++)
17dd3f0f	242	input_set_abs_params(input_dev, t, 0, 255, 0, 0);
1da177e4 LT	243
1da177e4 LT	244	if (guillemot->type->hat) {
17dd3f0f DT	245	input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
17dd3f0f DT	246	input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
1da177e4 LT	247	}
	248
	249	for (i = 0; (t = guillemot->type->btn[i]) >= 0; i++)
17dd3f0f	250	set_bit(t, input_dev->keybit);
1da177e4	251
127278ce DT	252	err = input_register_device(guillemot->dev);
	253	if (err)
	254	goto fail2;
1da177e4 LT	255
	256	return 0;
	257
	258	fail2: gameport_close(gameport);
	259	fail1: gameport_set_drvdata(gameport, NULL);
17dd3f0f	260	input_free_device(input_dev);
1da177e4 LT	261	kfree(guillemot);
	262	return err;
	263	}
	264
	265	static void guillemot_disconnect(struct gameport *gameport)
	266	{
	267	struct guillemot *guillemot = gameport_get_drvdata(gameport);
	268
	269	printk(KERN_INFO "guillemot.c: Failed %d reads out of %d on %s\n", guillemot->reads, guillemot->bads, guillemot->phys);
17dd3f0f	270	input_unregister_device(guillemot->dev);
1da177e4 LT	271	gameport_close(gameport);
	272	kfree(guillemot);
	273	}
	274
	275	static struct gameport_driver guillemot_drv = {
	276	.driver = {
	277	.name = "guillemot",
	278	},
	279	.description = DRIVER_DESC,
	280	.connect = guillemot_connect,
	281	.disconnect = guillemot_disconnect,
	282	};
	283
	284	static int __init guillemot_init(void)
	285	{
2547203d	286	return gameport_register_driver(&guillemot_drv);
1da177e4 LT	287	}
	288
	289	static void __exit guillemot_exit(void)
	290	{
	291	gameport_unregister_driver(&guillemot_drv);
	292	}
	293
	294	module_init(guillemot_init);
	295	module_exit(guillemot_exit);