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

/*
 * $Id: tmdc.c,v 1.31 2002/01/22 20:29:52 vojtech Exp $
 *
 *  Copyright (c) 1998-2001 Vojtech Pavlik
 *
 *   Based on the work of:
 *	Trystan Larey-Williams
 */

/*
 * ThrustMaster DirectConnect (BSP) joystick family 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/delay.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/input.h>
#include <linux/jiffies.h>

#define DRIVER_DESC	"ThrustMaster DirectConnect joystick driver"

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

#define TMDC_MAX_START		600	/* 600 us */
#define TMDC_MAX_STROBE		60	/* 60 us */
#define TMDC_MAX_LENGTH		13

#define TMDC_MODE_M3DI		1
#define TMDC_MODE_3DRP		3
#define TMDC_MODE_AT		4
#define TMDC_MODE_FM		8
#define TMDC_MODE_FGP		163

#define TMDC_BYTE_ID		10
#define TMDC_BYTE_REV		11
#define TMDC_BYTE_DEF		12

#define TMDC_ABS		7
#define TMDC_ABS_HAT		4
#define TMDC_BTN		16

static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };

static const signed char tmdc_abs[TMDC_ABS] =
	{ ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
	{ ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
static const signed char tmdc_abs_at[TMDC_ABS] =
	{ ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
static const signed char tmdc_abs_fm[TMDC_ABS] =
	{ ABS_RX, ABS_RY, ABS_X, ABS_Y };

static const short tmdc_btn_pad[TMDC_BTN] =
	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
static const short tmdc_btn_joy[TMDC_BTN] =
	{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
	  BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
static const short tmdc_btn_fm[TMDC_BTN] =
        { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
static const short tmdc_btn_at[TMDC_BTN] =
        { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
          BTN_BASE3, BTN_BASE2, BTN_BASE };

static const struct {
        int x;
        int y;
} tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};

static const struct tmdc_model {
	unsigned char id;
	const char *name;
	char abs;
	char hats;
	char btnc[4];
	char btno[4];
	const signed char *axes;
	const short *buttons;
} tmdc_models[] = {
	{   1, "ThrustMaster Millenium 3D Inceptor",	  6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
	{   3, "ThrustMaster Rage 3D Gamepad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	{   4, "ThrustMaster Attack Throttle",		  5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
	{   8, "ThrustMaster FragMaster",		  4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
	{ 163, "Thrustmaster Fusion GamePad",		  2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	{   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
};


struct tmdc_port {
	struct input_dev *dev;
	char name[64];
	char phys[32];
	int mode;
	const signed char *abs;
	const short *btn;
	unsigned char absc;
	unsigned char btnc[4];
	unsigned char btno[4];
};

struct tmdc {
	struct gameport *gameport;
	struct tmdc_port *port[2];
#if 0
	struct input_dev *dev[2];
	char name[2][64];
	char phys[2][32];
	int mode[2];
	signed char *abs[2];
	short *btn[2];
	unsigned char absc[2];
	unsigned char btnc[2][4];
	unsigned char btno[2][4];
#endif
	int reads;
	int bads;
	unsigned char exists;
};

/*
 * tmdc_read_packet() reads a ThrustMaster packet.
 */

static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
{
	unsigned char u, v, w, x;
	unsigned long flags;
	int i[2], j[2], t[2], p, k;

	p = gameport_time(gameport, TMDC_MAX_STROBE);

	for (k = 0; k < 2; k++) {
		t[k] = gameport_time(gameport, TMDC_MAX_START);
		i[k] = j[k] = 0;
	}

	local_irq_save(flags);
	gameport_trigger(gameport);

	w = gameport_read(gameport) >> 4;

	do {
		x = w;
		w = gameport_read(gameport) >> 4;

		for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
			if (~v & u & 2) {
				if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
				t[k] = p;
				if (j[k] == 0) {				 /* Start bit */
					if (~v & 1) t[k] = 0;
					data[k][i[k]] = 0; j[k]++; continue;
				}
				if (j[k] == 9) {				/* Stop bit */
					if (v & 1) t[k] = 0;
					j[k] = 0; i[k]++; continue;
				}
				data[k][i[k]] |= (~v & 1) << (j[k]++ - 1);	/* Data bit */
			}
			t[k]--;
		}
	} while (t[0] > 0 || t[1] > 0);

	local_irq_restore(flags);

	return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
}

static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
{
	int i, k, l;

	if (data[TMDC_BYTE_ID] != port->mode)
		return -1;

	for (i = 0; i < port->absc; i++) {
		if (port->abs[i] < 0)
			return 0;

		input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
	}

	switch (port->mode) {

		case TMDC_MODE_M3DI:

			i = tmdc_byte_d[0];
			input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
			input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i]       & 1));
			break;

		case TMDC_MODE_AT:

			i = tmdc_byte_a[3];
			input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
			input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
			break;

	}

	for (k = l = 0; k < 4; k++) {
		for (i = 0; i < port->btnc[k]; i++)
			input_report_key(port->dev, port->btn[i + l],
				((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
		l += port->btnc[k];
	}

	input_sync(port->dev);

	return 0;
}

/*
 * tmdc_poll() reads and analyzes ThrustMaster joystick data.
 */

static void tmdc_poll(struct gameport *gameport)
{
	unsigned char data[2][TMDC_MAX_LENGTH];
	struct tmdc *tmdc = gameport_get_drvdata(gameport);
	unsigned char r, bad = 0;
	int i;

	tmdc->reads++;

	if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
		bad = 1;
	else {
		for (i = 0; i < 2; i++) {
			if (r & (1 << i) & tmdc->exists) {

				if (tmdc_parse_packet(tmdc->port[i], data[i]))
					bad = 1;
			}
		}
	}

	tmdc->bads += bad;
}

static int tmdc_open(struct input_dev *dev)
{
	struct tmdc *tmdc = dev->private;

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

static void tmdc_close(struct input_dev *dev)
{
	struct tmdc *tmdc = dev->private;

	gameport_stop_polling(tmdc->gameport);
}

static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
{
	const struct tmdc_model *model;
	struct tmdc_port *port;
	struct input_dev *input_dev;
	int i, j, b = 0;

	tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!port || !input_dev) {
		kfree(port);
		input_free_device(input_dev);
		return -ENOMEM;
	}

	port->mode = data[TMDC_BYTE_ID];

	for (model = tmdc_models; model->id && model->id != port->mode; model++)
		/* empty */;

	port->abs = model->axes;
	port->btn = model->buttons;

	if (!model->id) {
		port->absc = data[TMDC_BYTE_DEF] >> 4;
		for (i = 0; i < 4; i++)
			port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
	} else {
		port->absc = model->abs;
		for (i = 0; i < 4; i++)
			port->btnc[i] = model->btnc[i];
	}

	for (i = 0; i < 4; i++)
		port->btno[i] = model->btno[i];

	snprintf(port->name, sizeof(port->name), model->name,
		 port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
	snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);

	port->dev = input_dev;

	input_dev->name = port->name;
	input_dev->phys = port->phys;
	input_dev->id.bustype = BUS_GAMEPORT;
	input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
	input_dev->id.product = model->id;
	input_dev->id.version = 0x0100;
	input_dev->cdev.dev = &tmdc->gameport->dev;
	input_dev->private = tmdc;

	input_dev->open = tmdc_open;
	input_dev->close = tmdc_close;

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

	for (i = 0; i < port->absc && i < TMDC_ABS; i++)
		if (port->abs[i] >= 0)
			input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);

	for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
		input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);

	for (i = 0; i < 4; i++) {
		for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
			set_bit(port->btn[j + b], input_dev->keybit);
		b += port->btnc[i];
	}

	input_register_device(port->dev);

	return 0;
}

/*
 * tmdc_probe() probes for ThrustMaster type joysticks.
 */

static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
{
	unsigned char data[2][TMDC_MAX_LENGTH];
	struct tmdc *tmdc;
	int i;
	int err;

	if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
		return -ENOMEM;

	tmdc->gameport = gameport;

	gameport_set_drvdata(gameport, tmdc);

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

	if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
		err = -ENODEV;
		goto fail2;
	}

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

	for (i = 0; i < 2; i++) {
		if (tmdc->exists & (1 << i)) {

			err = tmdc_setup_port(tmdc, i, data[i]);
			if (err)
				goto fail3;
		}
	}

	return 0;

 fail3: while (--i >= 0) {
		if (tmdc->port[i]) {
			input_unregister_device(tmdc->port[i]->dev);
			kfree(tmdc->port[i]);
		}
	}
 fail2:	gameport_close(gameport);
 fail1:	gameport_set_drvdata(gameport, NULL);
	kfree(tmdc);
	return err;
}

static void tmdc_disconnect(struct gameport *gameport)
{
	struct tmdc *tmdc = gameport_get_drvdata(gameport);
	int i;

	for (i = 0; i < 2; i++) {
		if (tmdc->port[i]) {
			input_unregister_device(tmdc->port[i]->dev);
			kfree(tmdc->port[i]);
		}
	}
	gameport_close(gameport);
	gameport_set_drvdata(gameport, NULL);
	kfree(tmdc);
}

static struct gameport_driver tmdc_drv = {
	.driver		= {
		.name	= "tmdc",
	},
	.description	= DRIVER_DESC,
	.connect	= tmdc_connect,
	.disconnect	= tmdc_disconnect,
};

static int __init tmdc_init(void)
{
	gameport_register_driver(&tmdc_drv);
	return 0;
}

static void __exit tmdc_exit(void)
{
	gameport_unregister_driver(&tmdc_drv);
}

module_init(tmdc_init);
module_exit(tmdc_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* $Id: tmdc.c,v 1.31 2002/01/22 20:29:52 vojtech Exp $
	3	*
	4	* Copyright (c) 1998-2001 Vojtech Pavlik
	5	*
	6	* Based on the work of:
	7	* Trystan Larey-Williams
	8	*/
	9
	10	/*
	11	* ThrustMaster DirectConnect (BSP) joystick family driver for Linux
	12	*/
	13
	14	/*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2 of the License, or
	18	* (at your option) any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
	24	*
	25	* You should have received a copy of the GNU General Public License
	26	* along with this program; if not, write to the Free Software
	27	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	28	*
	29	* Should you need to contact me, the author, you can do so either by
	30	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	31	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	32	*/
	33
	34	#include <linux/delay.h>
	35	#include <linux/kernel.h>
	36	#include <linux/slab.h>
	37	#include <linux/module.h>
	38	#include <linux/init.h>
	39	#include <linux/gameport.h>
	40	#include <linux/input.h>
4e57b681	41	#include <linux/jiffies.h>
1da177e4 LT	42
	43	#define DRIVER_DESC "ThrustMaster DirectConnect joystick driver"
	44
	45	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	46	MODULE_DESCRIPTION(DRIVER_DESC);
	47	MODULE_LICENSE("GPL");
	48
	49	#define TMDC_MAX_START 600 /* 600 us */
	50	#define TMDC_MAX_STROBE 60 /* 60 us */
	51	#define TMDC_MAX_LENGTH 13
	52
	53	#define TMDC_MODE_M3DI 1
	54	#define TMDC_MODE_3DRP 3
	55	#define TMDC_MODE_AT 4
	56	#define TMDC_MODE_FM 8
	57	#define TMDC_MODE_FGP 163
	58
	59	#define TMDC_BYTE_ID 10
	60	#define TMDC_BYTE_REV 11
	61	#define TMDC_BYTE_DEF 12
	62
	63	#define TMDC_ABS 7
	64	#define TMDC_ABS_HAT 4
	65	#define TMDC_BTN 16
	66
17dd3f0f DT	67	static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
17dd3f0f DT	68	static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
1da177e4	69
17dd3f0f	70	static const signed char tmdc_abs[TMDC_ABS] =
1da177e4	71	{ ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
17dd3f0f	72	static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
1da177e4	73	{ ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
17dd3f0f	74	static const signed char tmdc_abs_at[TMDC_ABS] =
1da177e4	75	{ ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
17dd3f0f	76	static const signed char tmdc_abs_fm[TMDC_ABS] =
1da177e4 LT	77	{ ABS_RX, ABS_RY, ABS_X, ABS_Y };
1da177e4 LT	78
17dd3f0f	79	static const short tmdc_btn_pad[TMDC_BTN] =
1da177e4	80	{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
17dd3f0f	81	static const short tmdc_btn_joy[TMDC_BTN] =
1da177e4	82	{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
ab0c3443	83	BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
17dd3f0f	84	static const short tmdc_btn_fm[TMDC_BTN] =
1da177e4	85	{ BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
17dd3f0f	86	static const short tmdc_btn_at[TMDC_BTN] =
1da177e4 LT	87	{ BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
	88	BTN_BASE3, BTN_BASE2, BTN_BASE };
	89
17dd3f0f	90	static const struct {
1da177e4 LT	91	int x;
	92	int y;
	93	} tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
	94
17dd3f0f DT	95	static const struct tmdc_model {
	96	unsigned char id;
	97	const char *name;
	98	char abs;
	99	char hats;
	100	char btnc[4];
	101	char btno[4];
	102	const signed char *axes;
	103	const short *buttons;
	104	} tmdc_models[] = {
	105	{ 1, "ThrustMaster Millenium 3D Inceptor", 6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
	106	{ 3, "ThrustMaster Rage 3D Gamepad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	107	{ 4, "ThrustMaster Attack Throttle", 5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
	108	{ 8, "ThrustMaster FragMaster", 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
	109	{ 163, "Thrustmaster Fusion GamePad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
	110	{ 0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
	111	};
	112
	113
	114	struct tmdc_port {
	115	struct input_dev *dev;
	116	char name[64];
	117	char phys[32];
	118	int mode;
	119	const signed char *abs;
	120	const short *btn;
	121	unsigned char absc;
	122	unsigned char btnc[4];
	123	unsigned char btno[4];
	124	};
	125
1da177e4 LT	126	struct tmdc {
1da177e4 LT	127	struct gameport *gameport;
17dd3f0f DT	128	struct tmdc_port *port[2];
	129	#if 0
	130	struct input_dev *dev[2];
1da177e4 LT	131	char name[2][64];
	132	char phys[2][32];
	133	int mode[2];
	134	signed char *abs[2];
	135	short *btn[2];
	136	unsigned char absc[2];
	137	unsigned char btnc[2][4];
	138	unsigned char btno[2][4];
17dd3f0f	139	#endif
1da177e4 LT	140	int reads;
	141	int bads;
	142	unsigned char exists;
	143	};
	144
	145	/*
	146	* tmdc_read_packet() reads a ThrustMaster packet.
	147	*/
	148
	149	static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
	150	{
	151	unsigned char u, v, w, x;
	152	unsigned long flags;
	153	int i[2], j[2], t[2], p, k;
	154
	155	p = gameport_time(gameport, TMDC_MAX_STROBE);
	156
	157	for (k = 0; k < 2; k++) {
	158	t[k] = gameport_time(gameport, TMDC_MAX_START);
	159	i[k] = j[k] = 0;
	160	}
	161
	162	local_irq_save(flags);
	163	gameport_trigger(gameport);
	164
	165	w = gameport_read(gameport) >> 4;
	166
	167	do {
	168	x = w;
	169	w = gameport_read(gameport) >> 4;
	170
	171	for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
	172	if (~v & u & 2) {
	173	if (t[k] <= 0 \|\| i[k] >= TMDC_MAX_LENGTH) continue;
	174	t[k] = p;
	175	if (j[k] == 0) { /* Start bit */
	176	if (~v & 1) t[k] = 0;
	177	data[k][i[k]] = 0; j[k]++; continue;
	178	}
	179	if (j[k] == 9) { /* Stop bit */
	180	if (v & 1) t[k] = 0;
	181	j[k] = 0; i[k]++; continue;
	182	}
	183	data[k][i[k]] \|= (~v & 1) << (j[k]++ - 1); /* Data bit */
	184	}
	185	t[k]--;
	186	}
	187	} while (t[0] > 0 \|\| t[1] > 0);
	188
	189	local_irq_restore(flags);
	190
	191	return (i[0] == TMDC_MAX_LENGTH) \| ((i[1] == TMDC_MAX_LENGTH) << 1);
	192	}
	193
17dd3f0f DT	194	static int tmdc_parse_packet(struct tmdc_port port, unsigned char data)
	195	{
	196	int i, k, l;
	197
	198	if (data[TMDC_BYTE_ID] != port->mode)
	199	return -1;
	200
	201	for (i = 0; i < port->absc; i++) {
	202	if (port->abs[i] < 0)
	203	return 0;
	204
	205	input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
	206	}
	207
	208	switch (port->mode) {
	209
	210	case TMDC_MODE_M3DI:
	211
	212	i = tmdc_byte_d[0];
	213	input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
	214	input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i] & 1));
	215	break;
	216
	217	case TMDC_MODE_AT:
	218
	219	i = tmdc_byte_a[3];
	220	input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
	221	input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
	222	break;
	223
	224	}
	225
	226	for (k = l = 0; k < 4; k++) {
	227	for (i = 0; i < port->btnc[k]; i++)
	228	input_report_key(port->dev, port->btn[i + l],
	229	((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
	230	l += port->btnc[k];
	231	}
	232
	233	input_sync(port->dev);
	234
	235	return 0;
	236	}
	237
1da177e4 LT	238	/*
	239	* tmdc_poll() reads and analyzes ThrustMaster joystick data.
	240	*/
	241
	242	static void tmdc_poll(struct gameport *gameport)
	243	{
	244	unsigned char data[2][TMDC_MAX_LENGTH];
	245	struct tmdc *tmdc = gameport_get_drvdata(gameport);
1da177e4	246	unsigned char r, bad = 0;
17dd3f0f	247	int i;
1da177e4 LT	248
	249	tmdc->reads++;
	250
	251	if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
	252	bad = 1;
17dd3f0f DT	253	else {
	254	for (i = 0; i < 2; i++) {
	255	if (r & (1 << i) & tmdc->exists) {
1da177e4	256
17dd3f0f DT	257	if (tmdc_parse_packet(tmdc->port[i], data[i]))
17dd3f0f DT	258	bad = 1;
1da177e4	259	}
17dd3f0f	260	}
1da177e4 LT	261	}
	262
	263	tmdc->bads += bad;
	264	}
	265
	266	static int tmdc_open(struct input_dev *dev)
	267	{
	268	struct tmdc *tmdc = dev->private;
	269
	270	gameport_start_polling(tmdc->gameport);
	271	return 0;
	272	}
	273
	274	static void tmdc_close(struct input_dev *dev)
	275	{
	276	struct tmdc *tmdc = dev->private;
	277
	278	gameport_stop_polling(tmdc->gameport);
	279	}
	280
17dd3f0f DT	281	static int tmdc_setup_port(struct tmdc tmdc, int idx, unsigned char data)
	282	{
	283	const struct tmdc_model *model;
	284	struct tmdc_port *port;
	285	struct input_dev *input_dev;
	286	int i, j, b = 0;
	287
	288	tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
	289	input_dev = input_allocate_device();
	290	if (!port \|\| !input_dev) {
	291	kfree(port);
	292	input_free_device(input_dev);
	293	return -ENOMEM;
	294	}
	295
	296	port->mode = data[TMDC_BYTE_ID];
	297
	298	for (model = tmdc_models; model->id && model->id != port->mode; model++)
	299	/* empty */;
	300
	301	port->abs = model->axes;
	302	port->btn = model->buttons;
	303
	304	if (!model->id) {
	305	port->absc = data[TMDC_BYTE_DEF] >> 4;
	306	for (i = 0; i < 4; i++)
	307	port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
	308	} else {
	309	port->absc = model->abs;
	310	for (i = 0; i < 4; i++)
	311	port->btnc[i] = model->btnc[i];
	312	}
	313
	314	for (i = 0; i < 4; i++)
	315	port->btno[i] = model->btno[i];
	316
	317	snprintf(port->name, sizeof(port->name), model->name,
	318	port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
	319	snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);
	320
	321	port->dev = input_dev;
	322
	323	input_dev->name = port->name;
	324	input_dev->phys = port->phys;
	325	input_dev->id.bustype = BUS_GAMEPORT;
	326	input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
	327	input_dev->id.product = model->id;
	328	input_dev->id.version = 0x0100;
	329	input_dev->cdev.dev = &tmdc->gameport->dev;
	330	input_dev->private = tmdc;
	331
	332	input_dev->open = tmdc_open;
	333	input_dev->close = tmdc_close;
	334
	335	input_dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_ABS);
	336
	337	for (i = 0; i < port->absc && i < TMDC_ABS; i++)
	338	if (port->abs[i] >= 0)
	339	input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);
	340
	341	for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
	342	input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);
	343
	344	for (i = 0; i < 4; i++) {
345	for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
346	set_bit(port->btn[j + b], input_dev->keybit);
347	b += port->btnc[i];
348	}
349
350	input_register_device(port->dev);
351
352	return 0;
353	}
354
1da177e4 LT	355	/*
	356	* tmdc_probe() probes for ThrustMaster type joysticks.
	357	*/
	358
	359	static int tmdc_connect(struct gameport gameport, struct gameport_driver drv)
	360	{
1da177e4 LT	361	unsigned char data[2][TMDC_MAX_LENGTH];
1da177e4 LT	362	struct tmdc *tmdc;
17dd3f0f	363	int i;
1da177e4 LT	364	int err;
1da177e4 LT	365
a97e148a	366	if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
1da177e4 LT	367	return -ENOMEM;
	368
	369	tmdc->gameport = gameport;
	370
	371	gameport_set_drvdata(gameport, tmdc);
	372
	373	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
	374	if (err)
	375	goto fail1;
	376
	377	if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
	378	err = -ENODEV;
	379	goto fail2;
	380	}
	381
	382	gameport_set_poll_handler(gameport, tmdc_poll);
	383	gameport_set_poll_interval(gameport, 20);
	384
17dd3f0f DT	385	for (i = 0; i < 2; i++) {
17dd3f0f DT	386	if (tmdc->exists & (1 << i)) {
1da177e4	387
17dd3f0f DT	388	err = tmdc_setup_port(tmdc, i, data[i]);
	389	if (err)
	390	goto fail3;
1da177e4	391	}
17dd3f0f	392	}
1da177e4 LT	393
	394	return 0;
	395
17dd3f0f DT	396	fail3: while (--i >= 0) {
	397	if (tmdc->port[i]) {
	398	input_unregister_device(tmdc->port[i]->dev);
	399	kfree(tmdc->port[i]);
	400	}
	401	}
	402	fail2: gameport_close(gameport);
	403	fail1: gameport_set_drvdata(gameport, NULL);
1da177e4 LT	404	kfree(tmdc);
	405	return err;
	406	}
	407
	408	static void tmdc_disconnect(struct gameport *gameport)
	409	{
	410	struct tmdc *tmdc = gameport_get_drvdata(gameport);
	411	int i;
	412
17dd3f0f DT	413	for (i = 0; i < 2; i++) {
	414	if (tmdc->port[i]) {
	415	input_unregister_device(tmdc->port[i]->dev);
	416	kfree(tmdc->port[i]);
	417	}
	418	}
1da177e4 LT	419	gameport_close(gameport);
	420	gameport_set_drvdata(gameport, NULL);
	421	kfree(tmdc);
	422	}
	423
	424	static struct gameport_driver tmdc_drv = {
	425	.driver = {
	426	.name = "tmdc",
	427	},
	428	.description = DRIVER_DESC,
	429	.connect = tmdc_connect,
	430	.disconnect = tmdc_disconnect,
	431	};
	432
	433	static int __init tmdc_init(void)
	434	{
	435	gameport_register_driver(&tmdc_drv);
	436	return 0;
	437	}
	438
	439	static void __exit tmdc_exit(void)
	440	{
	441	gameport_unregister_driver(&tmdc_drv);
	442	}
	443
	444	module_init(tmdc_init);
	445	module_exit(tmdc_exit);