[deliverable/linux.git] / drivers / input / joystick / iforce / iforce-packets.c

/*
 *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
 *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
 *
 *  USB/RS232 I-Force joysticks and wheels.
 */

/*
 * 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 "iforce.h"

static struct {
	__s32 x;
	__s32 y;
} iforce_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};


void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data)
{
	int i;

	printk(KERN_DEBUG __FILE__ ": %s cmd = %04x, data = ", msg, cmd);
	for (i = 0; i < LO(cmd); i++)
		printk("%02x ", data[i]);
	printk("\n");
}

/*
 * Send a packet of bytes to the device
 */
int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data)
{
	/* Copy data to buffer */
	int n = LO(cmd);
	int c;
	int empty;
	int head, tail;
	unsigned long flags;

/*
 * Update head and tail of xmit buffer
 */
	spin_lock_irqsave(&iforce->xmit_lock, flags);

	head = iforce->xmit.head;
	tail = iforce->xmit.tail;


	if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) {
		dev_warn(&iforce->dev->dev,
			 "not enough space in xmit buffer to send new packet\n");
		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
		return -1;
	}

	empty = head == tail;
	XMIT_INC(iforce->xmit.head, n+2);

/*
 * Store packet in xmit buffer
 */
	iforce->xmit.buf[head] = HI(cmd);
	XMIT_INC(head, 1);
	iforce->xmit.buf[head] = LO(cmd);
	XMIT_INC(head, 1);

	c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE);
	if (n < c) c=n;

	memcpy(&iforce->xmit.buf[head],
	       data,
	       c);
	if (n != c) {
		memcpy(&iforce->xmit.buf[0],
		       data + c,
		       n - c);
	}
	XMIT_INC(head, n);

	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
/*
 * If necessary, start the transmission
 */
	switch (iforce->bus) {

#ifdef CONFIG_JOYSTICK_IFORCE_232
		case IFORCE_232:
		if (empty)
			iforce_serial_xmit(iforce);
		break;
#endif
#ifdef CONFIG_JOYSTICK_IFORCE_USB
		case IFORCE_USB:

		if (iforce->usbdev && empty &&
			!test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {

			iforce_usb_xmit(iforce);
		}
		break;
#endif
	}
	return 0;
}

/* Start or stop an effect */
int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value)
{
	unsigned char data[3];

	data[0] = LO(id);
	data[1] = (value > 0) ? ((value > 1) ? 0x41 : 0x01) : 0;
	data[2] = LO(value);
	return iforce_send_packet(iforce, FF_CMD_PLAY, data);
}

/* Mark an effect that was being updated as ready. That means it can be updated
 * again */
static int mark_core_as_ready(struct iforce *iforce, unsigned short addr)
{
	int i;

	if (!iforce->dev->ff)
		return 0;

	for (i = 0; i < iforce->dev->ff->max_effects; ++i) {
		if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags) &&
		    (iforce->core_effects[i].mod1_chunk.start == addr ||
		     iforce->core_effects[i].mod2_chunk.start == addr)) {
			clear_bit(FF_CORE_UPDATE, iforce->core_effects[i].flags);
			return 0;
		}
	}
	dev_warn(&iforce->dev->dev, "unused effect %04x updated !!!\n", addr);
	return -1;
}

void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data)
{
	struct input_dev *dev = iforce->dev;
	int i;
	static int being_used = 0;

	if (being_used)
		dev_warn(&iforce->dev->dev,
			 "re-entrant call to iforce_process %d\n", being_used);
	being_used++;

#ifdef CONFIG_JOYSTICK_IFORCE_232
	if (HI(iforce->expect_packet) == HI(cmd)) {
		iforce->expect_packet = 0;
		iforce->ecmd = cmd;
		memcpy(iforce->edata, data, IFORCE_MAX_LENGTH);
	}
#endif
	wake_up(&iforce->wait);

	if (!iforce->type) {
		being_used--;
		return;
	}

	switch (HI(cmd)) {

		case 0x01:	/* joystick position data */
		case 0x03:	/* wheel position data */
			if (HI(cmd) == 1) {
				input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) | data[0]));
				input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) | data[2]));
				input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
				if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
					input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
			} else {
				input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) | data[0]));
				input_report_abs(dev, ABS_GAS,   255 - data[2]);
				input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
			}

			input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
			input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);

			for (i = 0; iforce->type->btn[i] >= 0; i++)
				input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7)));

			/* If there are untouched bits left, interpret them as the second hat */
			if (i <= 8) {
				int btns = data[6];
				if (test_bit(ABS_HAT1X, dev->absbit)) {
					if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1);
					else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1);
					else input_report_abs(dev, ABS_HAT1X, 0);
				}
				if (test_bit(ABS_HAT1Y, dev->absbit)) {
					if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1);
					else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1);
					else input_report_abs(dev, ABS_HAT1Y, 0);
				}
			}

			input_sync(dev);

			break;

		case 0x02:	/* status report */
			input_report_key(dev, BTN_DEAD, data[0] & 0x02);
			input_sync(dev);

			/* Check if an effect was just started or stopped */
			i = data[1] & 0x7f;
			if (data[1] & 0x80) {
				if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
					/* Report play event */
					input_report_ff_status(dev, i, FF_STATUS_PLAYING);
				}
			} else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
				/* Report stop event */
				input_report_ff_status(dev, i, FF_STATUS_STOPPED);
			}
			if (LO(cmd) > 3) {
				int j;
				for (j = 3; j < LO(cmd); j += 2)
					mark_core_as_ready(iforce, data[j] | (data[j+1]<<8));
			}
			break;
	}
	being_used--;
}

int iforce_get_id_packet(struct iforce *iforce, char *packet)
{
	switch (iforce->bus) {

	case IFORCE_USB: {
#ifdef CONFIG_JOYSTICK_IFORCE_USB
		int status;

		iforce->cr.bRequest = packet[0];
		iforce->ctrl->dev = iforce->usbdev;

		status = usb_submit_urb(iforce->ctrl, GFP_ATOMIC);
		if (status) {
			dev_err(&iforce->intf->dev,
				"usb_submit_urb failed %d\n", status);
			return -1;
		}

		wait_event_interruptible_timeout(iforce->wait,
			iforce->ctrl->status != -EINPROGRESS, HZ);

		if (iforce->ctrl->status) {
			dev_dbg(&iforce->intf->dev,
				"iforce->ctrl->status = %d\n",
				iforce->ctrl->status);
			usb_unlink_urb(iforce->ctrl);
			return -1;
		}
#else
		printk(KERN_DEBUG "iforce_get_id_packet: iforce->bus = USB!\n");
#endif
		}
		break;

	case IFORCE_232:

#ifdef CONFIG_JOYSTICK_IFORCE_232
		iforce->expect_packet = FF_CMD_QUERY;
		iforce_send_packet(iforce, FF_CMD_QUERY, packet);

		wait_event_interruptible_timeout(iforce->wait,
			!iforce->expect_packet, HZ);

		if (iforce->expect_packet) {
			iforce->expect_packet = 0;
			return -1;
		}
#else
		dev_err(&iforce->dev->dev,
			"iforce_get_id_packet: iforce->bus = SERIO!\n");
#endif
		break;

	default:
		dev_err(&iforce->dev->dev,
			"iforce_get_id_packet: iforce->bus = %d\n",
			iforce->bus);
		break;
	}

	return -(iforce->edata[0] != packet[0]);
}
Commit	Line	Data
1da177e4	1	/*
1da177e4	2	* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
598972d4	3	* Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
1da177e4 LT	4	*
	5	* USB/RS232 I-Force joysticks and wheels.
	6	*/
	7
	8	/*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	* Should you need to contact me, the author, you can do so either by
	24	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	25	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	26	*/
	27
	28	#include "iforce.h"
	29
	30	static struct {
	31	__s32 x;
	32	__s32 y;
	33	} iforce_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
	34
	35
	36	void iforce_dump_packet(char msg, u16 cmd, unsigned char data)
	37	{
	38	int i;
	39
598972d4	40	printk(KERN_DEBUG __FILE__ ": %s cmd = %04x, data = ", msg, cmd);
1da177e4 LT	41	for (i = 0; i < LO(cmd); i++)
1da177e4 LT	42	printk("%02x ", data[i]);
598972d4	43	printk("\n");
1da177e4 LT	44	}
	45
	46	/*
	47	* Send a packet of bytes to the device
	48	*/
	49	int iforce_send_packet(struct iforce iforce, u16 cmd, unsigned char data)
	50	{
	51	/* Copy data to buffer */
	52	int n = LO(cmd);
	53	int c;
	54	int empty;
	55	int head, tail;
	56	unsigned long flags;
	57
	58	/*
	59	* Update head and tail of xmit buffer
	60	*/
	61	spin_lock_irqsave(&iforce->xmit_lock, flags);
	62
	63	head = iforce->xmit.head;
	64	tail = iforce->xmit.tail;
	65
598972d4	66
1da177e4	67	if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) {
1817b169 GKH	68	dev_warn(&iforce->dev->dev,
1817b169 GKH	69	"not enough space in xmit buffer to send new packet\n");
1da177e4 LT	70	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	71	return -1;
	72	}
	73
	74	empty = head == tail;
	75	XMIT_INC(iforce->xmit.head, n+2);
	76
	77	/*
	78	* Store packet in xmit buffer
	79	*/
	80	iforce->xmit.buf[head] = HI(cmd);
	81	XMIT_INC(head, 1);
	82	iforce->xmit.buf[head] = LO(cmd);
	83	XMIT_INC(head, 1);
	84
	85	c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE);
	86	if (n < c) c=n;
	87
	88	memcpy(&iforce->xmit.buf[head],
	89	data,
	90	c);
	91	if (n != c) {
	92	memcpy(&iforce->xmit.buf[0],
	93	data + c,
	94	n - c);
	95	}
	96	XMIT_INC(head, n);
	97
	98	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	99	/*
	100	* If necessary, start the transmission
	101	*/
	102	switch (iforce->bus) {
	103
	104	#ifdef CONFIG_JOYSTICK_IFORCE_232
	105	case IFORCE_232:
	106	if (empty)
	107	iforce_serial_xmit(iforce);
	108	break;
	109	#endif
	110	#ifdef CONFIG_JOYSTICK_IFORCE_USB
	111	case IFORCE_USB:
	112
	113	if (iforce->usbdev && empty &&
	114	!test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) {
	115
	116	iforce_usb_xmit(iforce);
	117	}
	118	break;
	119	#endif
	120	}
	121	return 0;
	122	}
	123
	124	/* Start or stop an effect */
	125	int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value)
	126	{
	127	unsigned char data[3];
	128
1da177e4 LT	129	data[0] = LO(id);
	130	data[1] = (value > 0) ? ((value > 1) ? 0x41 : 0x01) : 0;
	131	data[2] = LO(value);
	132	return iforce_send_packet(iforce, FF_CMD_PLAY, data);
	133	}
	134
	135	/* Mark an effect that was being updated as ready. That means it can be updated
	136	* again */
	137	static int mark_core_as_ready(struct iforce *iforce, unsigned short addr)
	138	{
	139	int i;
17dd3f0f	140
f6a01c85 AH	141	if (!iforce->dev->ff)
	142	return 0;
	143
	144	for (i = 0; i < iforce->dev->ff->max_effects; ++i) {
1da177e4 LT	145	if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags) &&
	146	(iforce->core_effects[i].mod1_chunk.start == addr \|\|
	147	iforce->core_effects[i].mod2_chunk.start == addr)) {
	148	clear_bit(FF_CORE_UPDATE, iforce->core_effects[i].flags);
	149	return 0;
	150	}
	151	}
1817b169	152	dev_warn(&iforce->dev->dev, "unused effect %04x updated !!!\n", addr);
1da177e4 LT	153	return -1;
	154	}
	155
7d12e780	156	void iforce_process_packet(struct iforce iforce, u16 cmd, unsigned char data)
1da177e4	157	{
17dd3f0f	158	struct input_dev *dev = iforce->dev;
1da177e4 LT	159	int i;
	160	static int being_used = 0;
	161
	162	if (being_used)
1817b169 GKH	163	dev_warn(&iforce->dev->dev,
1817b169 GKH	164	"re-entrant call to iforce_process %d\n", being_used);
1da177e4 LT	165	being_used++;
	166
	167	#ifdef CONFIG_JOYSTICK_IFORCE_232
	168	if (HI(iforce->expect_packet) == HI(cmd)) {
	169	iforce->expect_packet = 0;
	170	iforce->ecmd = cmd;
	171	memcpy(iforce->edata, data, IFORCE_MAX_LENGTH);
1da177e4 LT	172	}
1da177e4 LT	173	#endif
97d4ebfe	174	wake_up(&iforce->wait);
1da177e4 LT	175
	176	if (!iforce->type) {
	177	being_used--;
	178	return;
	179	}
	180
	181	switch (HI(cmd)) {
	182
	183	case 0x01: /* joystick position data */
	184	case 0x03: /* wheel position data */
1da177e4 LT	185	if (HI(cmd) == 1) {
	186	input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) \| data[0]));
	187	input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) \| data[2]));
	188	input_report_abs(dev, ABS_THROTTLE, 255 - data[4]);
	189	if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit))
	190	input_report_abs(dev, ABS_RUDDER, (__s8)data[7]);
	191	} else {
	192	input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) \| data[0]));
	193	input_report_abs(dev, ABS_GAS, 255 - data[2]);
	194	input_report_abs(dev, ABS_BRAKE, 255 - data[3]);
	195	}
	196
	197	input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x);
	198	input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y);
	199
	200	for (i = 0; iforce->type->btn[i] >= 0; i++)
	201	input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7)));
	202
	203	/* If there are untouched bits left, interpret them as the second hat */
	204	if (i <= 8) {
	205	int btns = data[6];
	206	if (test_bit(ABS_HAT1X, dev->absbit)) {
	207	if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1);
	208	else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1);
	209	else input_report_abs(dev, ABS_HAT1X, 0);
	210	}
	211	if (test_bit(ABS_HAT1Y, dev->absbit)) {
	212	if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1);
	213	else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1);
	214	else input_report_abs(dev, ABS_HAT1Y, 0);
	215	}
	216	}
	217
	218	input_sync(dev);
	219
	220	break;
	221
	222	case 0x02: /* status report */
1da177e4 LT	223	input_report_key(dev, BTN_DEAD, data[0] & 0x02);
	224	input_sync(dev);
	225
	226	/* Check if an effect was just started or stopped */
	227	i = data[1] & 0x7f;
	228	if (data[1] & 0x80) {
	229	if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
f6a01c85 AH	230	/* Report play event */
f6a01c85 AH	231	input_report_ff_status(dev, i, FF_STATUS_PLAYING);
1da177e4	232	}
f6a01c85	233	} else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) {
1da177e4 LT	234	/* Report stop event */
	235	input_report_ff_status(dev, i, FF_STATUS_STOPPED);
	236	}
	237	if (LO(cmd) > 3) {
	238	int j;
f6a01c85	239	for (j = 3; j < LO(cmd); j += 2)
1da177e4	240	mark_core_as_ready(iforce, data[j] \| (data[j+1]<<8));
1da177e4 LT	241	}
	242	break;
	243	}
	244	being_used--;
	245	}
	246
	247	int iforce_get_id_packet(struct iforce iforce, char packet)
	248	{
1da177e4 LT	249	switch (iforce->bus) {
1da177e4 LT	250
d9f03831	251	case IFORCE_USB: {
1da177e4	252	#ifdef CONFIG_JOYSTICK_IFORCE_USB
d9f03831 AM	253	int status;
d9f03831 AM	254
1da177e4 LT	255	iforce->cr.bRequest = packet[0];
	256	iforce->ctrl->dev = iforce->usbdev;
	257
c0338c15 JD	258	status = usb_submit_urb(iforce->ctrl, GFP_ATOMIC);
c0338c15 JD	259	if (status) {
a852d78e	260	dev_err(&iforce->intf->dev,
7b22a885	261	"usb_submit_urb failed %d\n", status);
1da177e4	262	return -1;
c0338c15	263	}
1da177e4	264
fb76b099 VP	265	wait_event_interruptible_timeout(iforce->wait,
fb76b099 VP	266	iforce->ctrl->status != -EINPROGRESS, HZ);
1da177e4	267
97d4ebfe	268	if (iforce->ctrl->status) {
a852d78e	269	dev_dbg(&iforce->intf->dev,
f576125d GKH	270	"iforce->ctrl->status = %d\n",
f576125d GKH	271	iforce->ctrl->status);
1da177e4 LT	272	usb_unlink_urb(iforce->ctrl);
	273	return -1;
	274	}
	275	#else
f576125d	276	printk(KERN_DEBUG "iforce_get_id_packet: iforce->bus = USB!\n");
1da177e4	277	#endif
d9f03831	278	}
1da177e4 LT	279	break;
	280
	281	case IFORCE_232:
	282
	283	#ifdef CONFIG_JOYSTICK_IFORCE_232
	284	iforce->expect_packet = FF_CMD_QUERY;
	285	iforce_send_packet(iforce, FF_CMD_QUERY, packet);
	286
fb76b099 VP	287	wait_event_interruptible_timeout(iforce->wait,
fb76b099 VP	288	!iforce->expect_packet, HZ);
1da177e4	289
fb76b099	290	if (iforce->expect_packet) {
1da177e4 LT	291	iforce->expect_packet = 0;
	292	return -1;
	293	}
	294	#else
7b22a885 GKH	295	dev_err(&iforce->dev->dev,
7b22a885 GKH	296	"iforce_get_id_packet: iforce->bus = SERIO!\n");
1da177e4 LT	297	#endif
	298	break;
	299
	300	default:
7b22a885 GKH	301	dev_err(&iforce->dev->dev,
	302	"iforce_get_id_packet: iforce->bus = %d\n",
	303	iforce->bus);
1da177e4 LT	304	break;
	305	}
	306
	307	return -(iforce->edata[0] != packet[0]);
	308	}
	309