[net-next-2.6.git] / drivers / usb / input / mtouchusb.c

/******************************************************************************
 * mtouchusb.c  --  Driver for Microtouch (Now 3M) USB Touchscreens
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Based upon original work by Radoslaw Garbacz (usb-support@ite.pl)
 *  (http://freshmeat.net/projects/3mtouchscreendriver)
 *
 * History
 *
 *  0.3 & 0.4  2002 (TEJ) tejohnson@yahoo.com
 *    Updated to 2.4.18, then 2.4.19
 *    Old version still relied on stealing a minor
 *
 *  0.5  02/26/2004 (TEJ) tejohnson@yahoo.com
 *    Complete rewrite using Linux Input in 2.6.3
 *    Unfortunately no calibration support at this time
 *
 *  1.4 04/25/2004 (TEJ) tejohnson@yahoo.com
 *    Changed reset from standard USB dev reset to vendor reset
 *    Changed data sent to host from compensated to raw coordinates
 *    Eliminated vendor/product module params
 *    Performed multiple successful tests with an EXII-5010UC
 *
 *  1.5 02/27/2005 ddstreet@ieee.org
 *    Added module parameter to select raw or hw-calibrated coordinate reporting
 *
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb/input.h>

#define MTOUCHUSB_MIN_XC                0x0
#define MTOUCHUSB_MAX_RAW_XC            0x4000
#define MTOUCHUSB_MAX_CALIB_XC          0xffff
#define MTOUCHUSB_XC_FUZZ               0x0
#define MTOUCHUSB_XC_FLAT               0x0
#define MTOUCHUSB_MIN_YC                0x0
#define MTOUCHUSB_MAX_RAW_YC            0x4000
#define MTOUCHUSB_MAX_CALIB_YC          0xffff
#define MTOUCHUSB_YC_FUZZ               0x0
#define MTOUCHUSB_YC_FLAT               0x0

#define MTOUCHUSB_ASYNC_REPORT          1
#define MTOUCHUSB_RESET                 7
#define MTOUCHUSB_REPORT_DATA_SIZE      11
#define MTOUCHUSB_REQ_CTRLLR_ID         10

#define MTOUCHUSB_GET_RAW_XC(data)      (data[8]<<8 | data[7])
#define MTOUCHUSB_GET_CALIB_XC(data)    (data[4]<<8 | data[3])
#define MTOUCHUSB_GET_RAW_YC(data)      (data[10]<<8 | data[9])
#define MTOUCHUSB_GET_CALIB_YC(data)    (data[6]<<8 | data[5])
#define MTOUCHUSB_GET_XC(data)          (raw_coordinates ? \
                                         MTOUCHUSB_GET_RAW_XC(data) : \
                                         MTOUCHUSB_GET_CALIB_XC(data))
#define MTOUCHUSB_GET_YC(data)          (raw_coordinates ? \
                                         MTOUCHUSB_GET_RAW_YC(data) : \
                                         MTOUCHUSB_GET_CALIB_YC(data))
#define MTOUCHUSB_GET_TOUCHED(data)     ((data[2] & 0x40) ? 1:0)

#define DRIVER_VERSION "v1.5"
#define DRIVER_AUTHOR "Todd E. Johnson, tejohnson@yahoo.com"
#define DRIVER_DESC "3M USB Touchscreen Driver"
#define DRIVER_LICENSE "GPL"

static int raw_coordinates = 1;

module_param(raw_coordinates, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(raw_coordinates, "report raw coordinate values (y, default) or hardware-calibrated coordinate values (n)");

struct mtouch_usb {
	unsigned char *data;
	dma_addr_t data_dma;
	struct urb *irq;
	struct usb_device *udev;
	struct input_dev *input;
	char name[128];
	char phys[64];
};

static struct usb_device_id mtouchusb_devices[] = {
	{ USB_DEVICE(0x0596, 0x0001) },
	{ }
};

static void mtouchusb_irq(struct urb *urb)
{
	struct mtouch_usb *mtouch = urb->context;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ETIME:
		/* this urb is timing out */
		dbg("%s - urb timed out - was the device unplugged?",
		    __FUNCTION__);
		return;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d",
		    __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d",
		    __FUNCTION__, urb->status);
		goto exit;
	}

	input_report_key(mtouch->input, BTN_TOUCH,
			 MTOUCHUSB_GET_TOUCHED(mtouch->data));
	input_report_abs(mtouch->input, ABS_X, MTOUCHUSB_GET_XC(mtouch->data));
	input_report_abs(mtouch->input, ABS_Y,
			 (raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
			 - MTOUCHUSB_GET_YC(mtouch->data));
	input_sync(mtouch->input);

exit:
	retval = usb_submit_urb(urb, GFP_ATOMIC);
	if (retval)
		err("%s - usb_submit_urb failed with result: %d",
		    __FUNCTION__, retval);
}

static int mtouchusb_open(struct input_dev *input)
{
	struct mtouch_usb *mtouch = input->private;

	mtouch->irq->dev = mtouch->udev;

	if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
		return -EIO;

	return 0;
}

static void mtouchusb_close(struct input_dev *input)
{
	struct mtouch_usb *mtouch = input->private;

	usb_kill_urb(mtouch->irq);
}

static int mtouchusb_alloc_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
{
	dbg("%s - called", __FUNCTION__);

	mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
					GFP_ATOMIC, &mtouch->data_dma);

	if (!mtouch->data)
		return -1;

	return 0;
}

static void mtouchusb_free_buffers(struct usb_device *udev, struct mtouch_usb *mtouch)
{
	dbg("%s - called", __FUNCTION__);

	if (mtouch->data)
		usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
				mtouch->data, mtouch->data_dma);
}

static int mtouchusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct mtouch_usb *mtouch;
	struct input_dev *input_dev;
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor *endpoint;
	struct usb_device *udev = interface_to_usbdev(intf);
	int nRet;

	dbg("%s - called", __FUNCTION__);

	dbg("%s - setting interface", __FUNCTION__);
	interface = intf->cur_altsetting;

	dbg("%s - setting endpoint", __FUNCTION__);
	endpoint = &interface->endpoint[0].desc;

	mtouch = kzalloc(sizeof(struct mtouch_usb), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!mtouch || !input_dev) {
		err("%s - Out of memory.", __FUNCTION__);
		goto fail1;
	}

	dbg("%s - allocating buffers", __FUNCTION__);
	if (mtouchusb_alloc_buffers(udev, mtouch))
		goto fail2;

	mtouch->udev = udev;
	mtouch->input = input_dev;

	if (udev->manufacturer)
		strlcpy(mtouch->name, udev->manufacturer, sizeof(mtouch->name));

	if (udev->product) {
		if (udev->manufacturer)
			strlcat(mtouch->name, " ", sizeof(mtouch->name));
		strlcat(mtouch->name, udev->product, sizeof(mtouch->name));
	}

	if (!strlen(mtouch->name))
		snprintf(mtouch->name, sizeof(mtouch->name),
			"USB Touchscreen %04x:%04x",
			le16_to_cpu(udev->descriptor.idVendor),
			le16_to_cpu(udev->descriptor.idProduct));

	usb_make_path(udev, mtouch->phys, sizeof(mtouch->phys));
	strlcpy(mtouch->phys, "/input0", sizeof(mtouch->phys));

	input_dev->name = mtouch->name;
	input_dev->phys = mtouch->phys;
	usb_to_input_id(udev, &input_dev->id);
	input_dev->cdev.dev = &intf->dev;
	input_dev->private = mtouch;

	input_dev->open = mtouchusb_open;
	input_dev->close = mtouchusb_close;

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
	input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
	input_set_abs_params(input_dev, ABS_X, MTOUCHUSB_MIN_XC,
		raw_coordinates ? MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC,
				MTOUCHUSB_XC_FUZZ, MTOUCHUSB_XC_FLAT);
	input_set_abs_params(input_dev, ABS_Y, MTOUCHUSB_MIN_YC,
		raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC,
		MTOUCHUSB_YC_FUZZ, MTOUCHUSB_YC_FLAT);

	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
			       MTOUCHUSB_RESET,
			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			       1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
	dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
	    __FUNCTION__, nRet);

	dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
	mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!mtouch->irq) {
		dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
		goto fail2;
	}

	dbg("%s - usb_fill_int_urb", __FUNCTION__);
	usb_fill_int_urb(mtouch->irq, mtouch->udev,
			 usb_rcvintpipe(mtouch->udev, 0x81),
			 mtouch->data, MTOUCHUSB_REPORT_DATA_SIZE,
			 mtouchusb_irq, mtouch, endpoint->bInterval);

	dbg("%s - input_register_device", __FUNCTION__);
	input_register_device(mtouch->input);

	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
			       MTOUCHUSB_ASYNC_REPORT,
			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			       1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
	dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
	    __FUNCTION__, nRet);

	usb_set_intfdata(intf, mtouch);
	return 0;

fail2:	mtouchusb_free_buffers(udev, mtouch);
fail1:	input_free_device(input_dev);
	kfree(mtouch);
	return -ENOMEM;
}

static void mtouchusb_disconnect(struct usb_interface *intf)
{
	struct mtouch_usb *mtouch = usb_get_intfdata(intf);

	dbg("%s - called", __FUNCTION__);
	usb_set_intfdata(intf, NULL);
	if (mtouch) {
		dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
		usb_kill_urb(mtouch->irq);
		input_unregister_device(mtouch->input);
		usb_free_urb(mtouch->irq);
		mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
		kfree(mtouch);
	}
}

MODULE_DEVICE_TABLE(usb, mtouchusb_devices);

static struct usb_driver mtouchusb_driver = {
	.name		= "mtouchusb",
	.probe		= mtouchusb_probe,
	.disconnect	= mtouchusb_disconnect,
	.id_table	= mtouchusb_devices,
};

static int __init mtouchusb_init(void)
{
	dbg("%s - called", __FUNCTION__);
	return usb_register(&mtouchusb_driver);
}

static void __exit mtouchusb_cleanup(void)
{
	dbg("%s - called", __FUNCTION__);
	usb_deregister(&mtouchusb_driver);
}

module_init(mtouchusb_init);
module_exit(mtouchusb_cleanup);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/******************************************************************************
	2	* mtouchusb.c -- Driver for Microtouch (Now 3M) USB Touchscreens
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License as
	6	* published by the Free Software Foundation; either version 2 of the
	7	* License, or (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful, but
	10	* WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	* General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*
	18	* Based upon original work by Radoslaw Garbacz (usb-support@ite.pl)
	19	* (http://freshmeat.net/projects/3mtouchscreendriver)
	20	*
	21	* History
	22	*
	23	* 0.3 & 0.4 2002 (TEJ) tejohnson@yahoo.com
	24	* Updated to 2.4.18, then 2.4.19
	25	* Old version still relied on stealing a minor
	26	*
	27	* 0.5 02/26/2004 (TEJ) tejohnson@yahoo.com
	28	* Complete rewrite using Linux Input in 2.6.3
	29	* Unfortunately no calibration support at this time
	30	*
	31	* 1.4 04/25/2004 (TEJ) tejohnson@yahoo.com
	32	* Changed reset from standard USB dev reset to vendor reset
	33	* Changed data sent to host from compensated to raw coordinates
	34	* Eliminated vendor/product module params
093cf723	35	* Performed multiple successful tests with an EXII-5010UC
1da177e4 LT	36	*
	37	* 1.5 02/27/2005 ddstreet@ieee.org
	38	* Added module parameter to select raw or hw-calibrated coordinate reporting
	39	*
	40	*****************************************************************************/
	41
1da177e4 LT	42	#include <linux/kernel.h>
1da177e4 LT	43	#include <linux/slab.h>
1da177e4 LT	44	#include <linux/module.h>
1da177e4 LT	45	#include <linux/init.h>
ae0dadcf	46	#include <linux/usb/input.h>
1da177e4 LT	47
	48	#define MTOUCHUSB_MIN_XC 0x0
	49	#define MTOUCHUSB_MAX_RAW_XC 0x4000
	50	#define MTOUCHUSB_MAX_CALIB_XC 0xffff
	51	#define MTOUCHUSB_XC_FUZZ 0x0
	52	#define MTOUCHUSB_XC_FLAT 0x0
	53	#define MTOUCHUSB_MIN_YC 0x0
	54	#define MTOUCHUSB_MAX_RAW_YC 0x4000
	55	#define MTOUCHUSB_MAX_CALIB_YC 0xffff
	56	#define MTOUCHUSB_YC_FUZZ 0x0
	57	#define MTOUCHUSB_YC_FLAT 0x0
	58
	59	#define MTOUCHUSB_ASYNC_REPORT 1
	60	#define MTOUCHUSB_RESET 7
	61	#define MTOUCHUSB_REPORT_DATA_SIZE 11
	62	#define MTOUCHUSB_REQ_CTRLLR_ID 10
	63
	64	#define MTOUCHUSB_GET_RAW_XC(data) (data[8]<<8 \| data[7])
	65	#define MTOUCHUSB_GET_CALIB_XC(data) (data[4]<<8 \| data[3])
	66	#define MTOUCHUSB_GET_RAW_YC(data) (data[10]<<8 \| data[9])
	67	#define MTOUCHUSB_GET_CALIB_YC(data) (data[6]<<8 \| data[5])
	68	#define MTOUCHUSB_GET_XC(data) (raw_coordinates ? \
	69	MTOUCHUSB_GET_RAW_XC(data) : \
	70	MTOUCHUSB_GET_CALIB_XC(data))
	71	#define MTOUCHUSB_GET_YC(data) (raw_coordinates ? \
	72	MTOUCHUSB_GET_RAW_YC(data) : \
	73	MTOUCHUSB_GET_CALIB_YC(data))
	74	#define MTOUCHUSB_GET_TOUCHED(data) ((data[2] & 0x40) ? 1:0)
	75
	76	#define DRIVER_VERSION "v1.5"
	77	#define DRIVER_AUTHOR "Todd E. Johnson, tejohnson@yahoo.com"
	78	#define DRIVER_DESC "3M USB Touchscreen Driver"
	79	#define DRIVER_LICENSE "GPL"
	80
	81	static int raw_coordinates = 1;
	82
	83	module_param(raw_coordinates, bool, S_IRUGO \| S_IWUSR);
	84	MODULE_PARM_DESC(raw_coordinates, "report raw coordinate values (y, default) or hardware-calibrated coordinate values (n)");
	85
	86	struct mtouch_usb {
8baf9ed4 DT	87	unsigned char *data;
	88	dma_addr_t data_dma;
	89	struct urb *irq;
	90	struct usb_device *udev;
c5b7c7c3	91	struct input_dev *input;
8baf9ed4 DT	92	char name[128];
8baf9ed4 DT	93	char phys[64];
1da177e4 LT	94	};
1da177e4 LT	95
8baf9ed4 DT	96	static struct usb_device_id mtouchusb_devices[] = {
	97	{ USB_DEVICE(0x0596, 0x0001) },
	98	{ }
1da177e4 LT	99	};
1da177e4 LT	100
7d12e780	101	static void mtouchusb_irq(struct urb *urb)
1da177e4	102	{
8baf9ed4 DT	103	struct mtouch_usb *mtouch = urb->context;
	104	int retval;
	105
	106	switch (urb->status) {
	107	case 0:
	108	/* success */
	109	break;
38e2bfc9	110	case -ETIME:
8baf9ed4 DT	111	/* this urb is timing out */
	112	dbg("%s - urb timed out - was the device unplugged?",
	113	__FUNCTION__);
	114	return;
	115	case -ECONNRESET:
	116	case -ENOENT:
	117	case -ESHUTDOWN:
	118	/* this urb is terminated, clean up */
	119	dbg("%s - urb shutting down with status: %d",
	120	__FUNCTION__, urb->status);
	121	return;
	122	default:
	123	dbg("%s - nonzero urb status received: %d",
	124	__FUNCTION__, urb->status);
	125	goto exit;
	126	}
	127
c5b7c7c3	128	input_report_key(mtouch->input, BTN_TOUCH,
8baf9ed4	129	MTOUCHUSB_GET_TOUCHED(mtouch->data));
c5b7c7c3 DT	130	input_report_abs(mtouch->input, ABS_X, MTOUCHUSB_GET_XC(mtouch->data));
c5b7c7c3 DT	131	input_report_abs(mtouch->input, ABS_Y,
1da177e4	132	(raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
8baf9ed4	133	- MTOUCHUSB_GET_YC(mtouch->data));
c5b7c7c3	134	input_sync(mtouch->input);
1da177e4 LT	135
1da177e4 LT	136	exit:
8baf9ed4 DT	137	retval = usb_submit_urb(urb, GFP_ATOMIC);
	138	if (retval)
	139	err("%s - usb_submit_urb failed with result: %d",
	140	__FUNCTION__, retval);
1da177e4 LT	141	}
1da177e4 LT	142
8baf9ed4	143	static int mtouchusb_open(struct input_dev *input)
1da177e4	144	{
8baf9ed4	145	struct mtouch_usb *mtouch = input->private;
1da177e4	146
8baf9ed4	147	mtouch->irq->dev = mtouch->udev;
1da177e4	148
65cde54b	149	if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
8baf9ed4	150	return -EIO;
1da177e4	151
8baf9ed4	152	return 0;
1da177e4 LT	153	}
1da177e4 LT	154
8baf9ed4	155	static void mtouchusb_close(struct input_dev *input)
1da177e4	156	{
8baf9ed4	157	struct mtouch_usb *mtouch = input->private;
1da177e4	158
65cde54b	159	usb_kill_urb(mtouch->irq);
1da177e4 LT	160	}
	161
	162	static int mtouchusb_alloc_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	163	{
8baf9ed4	164	dbg("%s - called", __FUNCTION__);
1da177e4	165
8baf9ed4	166	mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
54e6ecb2	167	GFP_ATOMIC, &mtouch->data_dma);
1da177e4	168
8baf9ed4 DT	169	if (!mtouch->data)
8baf9ed4 DT	170	return -1;
1da177e4	171
8baf9ed4	172	return 0;
1da177e4 LT	173	}
	174
	175	static void mtouchusb_free_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	176	{
8baf9ed4	177	dbg("%s - called", __FUNCTION__);
1da177e4	178
8baf9ed4 DT	179	if (mtouch->data)
	180	usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
	181	mtouch->data, mtouch->data_dma);
1da177e4 LT	182	}
	183
	184	static int mtouchusb_probe(struct usb_interface intf, const struct usb_device_id id)
	185	{
8baf9ed4	186	struct mtouch_usb *mtouch;
c5b7c7c3	187	struct input_dev *input_dev;
8baf9ed4 DT	188	struct usb_host_interface *interface;
	189	struct usb_endpoint_descriptor *endpoint;
	190	struct usb_device *udev = interface_to_usbdev(intf);
8baf9ed4 DT	191	int nRet;
	192
	193	dbg("%s - called", __FUNCTION__);
	194
	195	dbg("%s - setting interface", __FUNCTION__);
	196	interface = intf->cur_altsetting;
	197
	198	dbg("%s - setting endpoint", __FUNCTION__);
	199	endpoint = &interface->endpoint[0].desc;
	200
c5b7c7c3 DT	201	mtouch = kzalloc(sizeof(struct mtouch_usb), GFP_KERNEL);
	202	input_dev = input_allocate_device();
	203	if (!mtouch \|\| !input_dev) {
8baf9ed4	204	err("%s - Out of memory.", __FUNCTION__);
c5b7c7c3	205	goto fail1;
8baf9ed4 DT	206	}
8baf9ed4 DT	207
8baf9ed4	208	dbg("%s - allocating buffers", __FUNCTION__);
c5b7c7c3 DT	209	if (mtouchusb_alloc_buffers(udev, mtouch))
c5b7c7c3 DT	210	goto fail2;
8baf9ed4	211
c5b7c7c3 DT	212	mtouch->udev = udev;
c5b7c7c3 DT	213	mtouch->input = input_dev;
1da177e4 LT	214
1da177e4 LT	215	if (udev->manufacturer)
c5b7c7c3 DT	216	strlcpy(mtouch->name, udev->manufacturer, sizeof(mtouch->name));
	217
	218	if (udev->product) {
	219	if (udev->manufacturer)
	220	strlcat(mtouch->name, " ", sizeof(mtouch->name));
	221	strlcat(mtouch->name, udev->product, sizeof(mtouch->name));
	222	}
1da177e4	223
8baf9ed4	224	if (!strlen(mtouch->name))
c5b7c7c3 DT	225	snprintf(mtouch->name, sizeof(mtouch->name),
	226	"USB Touchscreen %04x:%04x",
	227	le16_to_cpu(udev->descriptor.idVendor),
	228	le16_to_cpu(udev->descriptor.idProduct));
	229
	230	usb_make_path(udev, mtouch->phys, sizeof(mtouch->phys));
	231	strlcpy(mtouch->phys, "/input0", sizeof(mtouch->phys));
	232
	233	input_dev->name = mtouch->name;
	234	input_dev->phys = mtouch->phys;
	235	usb_to_input_id(udev, &input_dev->id);
	236	input_dev->cdev.dev = &intf->dev;
	237	input_dev->private = mtouch;
	238
	239	input_dev->open = mtouchusb_open;
	240	input_dev->close = mtouchusb_close;
	241
	242	input_dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_ABS);
	243	input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
	244	input_set_abs_params(input_dev, ABS_X, MTOUCHUSB_MIN_XC,
	245	raw_coordinates ? MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC,
	246	MTOUCHUSB_XC_FUZZ, MTOUCHUSB_XC_FLAT);
	247	input_set_abs_params(input_dev, ABS_Y, MTOUCHUSB_MIN_YC,
	248	raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC,
	249	MTOUCHUSB_YC_FUZZ, MTOUCHUSB_YC_FLAT);
8baf9ed4 DT	250
	251	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	252	MTOUCHUSB_RESET,
	253	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	254	1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
	255	dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes\|err: %d",
	256	__FUNCTION__, nRet);
	257
	258	dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
	259	mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
	260	if (!mtouch->irq) {
	261	dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
c5b7c7c3	262	goto fail2;
8baf9ed4 DT	263	}
	264
	265	dbg("%s - usb_fill_int_urb", __FUNCTION__);
	266	usb_fill_int_urb(mtouch->irq, mtouch->udev,
	267	usb_rcvintpipe(mtouch->udev, 0x81),
	268	mtouch->data, MTOUCHUSB_REPORT_DATA_SIZE,
	269	mtouchusb_irq, mtouch, endpoint->bInterval);
	270
	271	dbg("%s - input_register_device", __FUNCTION__);
c5b7c7c3	272	input_register_device(mtouch->input);
8baf9ed4 DT	273
	274	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	275	MTOUCHUSB_ASYNC_REPORT,
	276	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	277	1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
	278	dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes\|err: %d",
	279	__FUNCTION__, nRet);
	280
8baf9ed4	281	usb_set_intfdata(intf, mtouch);
8baf9ed4	282	return 0;
c5b7c7c3 DT	283
	284	fail2: mtouchusb_free_buffers(udev, mtouch);
	285	fail1: input_free_device(input_dev);
	286	kfree(mtouch);
	287	return -ENOMEM;
1da177e4 LT	288	}
	289
	290	static void mtouchusb_disconnect(struct usb_interface *intf)
	291	{
8baf9ed4 DT	292	struct mtouch_usb *mtouch = usb_get_intfdata(intf);
	293
	294	dbg("%s - called", __FUNCTION__);
	295	usb_set_intfdata(intf, NULL);
	296	if (mtouch) {
	297	dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
	298	usb_kill_urb(mtouch->irq);
c5b7c7c3	299	input_unregister_device(mtouch->input);
8baf9ed4 DT	300	usb_free_urb(mtouch->irq);
	301	mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
	302	kfree(mtouch);
	303	}
1da177e4 LT	304	}
1da177e4 LT	305
8baf9ed4	306	MODULE_DEVICE_TABLE(usb, mtouchusb_devices);
1da177e4 LT	307
1da177e4 LT	308	static struct usb_driver mtouchusb_driver = {
8baf9ed4 DT	309	.name = "mtouchusb",
	310	.probe = mtouchusb_probe,
	311	.disconnect = mtouchusb_disconnect,
	312	.id_table = mtouchusb_devices,
1da177e4 LT	313	};
1da177e4 LT	314
8baf9ed4 DT	315	static int __init mtouchusb_init(void)
	316	{
	317	dbg("%s - called", __FUNCTION__);
	318	return usb_register(&mtouchusb_driver);
1da177e4 LT	319	}
1da177e4 LT	320
8baf9ed4 DT	321	static void __exit mtouchusb_cleanup(void)
	322	{
	323	dbg("%s - called", __FUNCTION__);
	324	usb_deregister(&mtouchusb_driver);
1da177e4 LT	325	}
	326
	327	module_init(mtouchusb_init);
	328	module_exit(mtouchusb_cleanup);
	329
8baf9ed4 DT	330	MODULE_AUTHOR(DRIVER_AUTHOR);
8baf9ed4 DT	331	MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4	332	MODULE_LICENSE("GPL");