[mirror_ubuntu-jammy-kernel.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 pt_regs *regs)
{
	struct mtouch_usb *mtouch = urb->context;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ETIMEDOUT:
		/* 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_regs(mtouch->input, regs);
	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,
					SLAB_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	};
	100
	101	static void mtouchusb_irq(struct urb urb, struct pt_regs regs)
	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;
	110	case -ETIMEDOUT:
	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 DT	128	input_regs(mtouch->input, regs);
c5b7c7c3 DT	129	input_report_key(mtouch->input, BTN_TOUCH,
8baf9ed4	130	MTOUCHUSB_GET_TOUCHED(mtouch->data));
c5b7c7c3 DT	131	input_report_abs(mtouch->input, ABS_X, MTOUCHUSB_GET_XC(mtouch->data));
c5b7c7c3 DT	132	input_report_abs(mtouch->input, ABS_Y,
1da177e4	133	(raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
8baf9ed4	134	- MTOUCHUSB_GET_YC(mtouch->data));
c5b7c7c3	135	input_sync(mtouch->input);
1da177e4 LT	136
1da177e4 LT	137	exit:
8baf9ed4 DT	138	retval = usb_submit_urb(urb, GFP_ATOMIC);
	139	if (retval)
	140	err("%s - usb_submit_urb failed with result: %d",
	141	__FUNCTION__, retval);
1da177e4 LT	142	}
1da177e4 LT	143
8baf9ed4	144	static int mtouchusb_open(struct input_dev *input)
1da177e4	145	{
8baf9ed4	146	struct mtouch_usb *mtouch = input->private;
1da177e4	147
8baf9ed4	148	mtouch->irq->dev = mtouch->udev;
1da177e4	149
65cde54b	150	if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
8baf9ed4	151	return -EIO;
1da177e4	152
8baf9ed4	153	return 0;
1da177e4 LT	154	}
1da177e4 LT	155
8baf9ed4	156	static void mtouchusb_close(struct input_dev *input)
1da177e4	157	{
8baf9ed4	158	struct mtouch_usb *mtouch = input->private;
1da177e4	159
65cde54b	160	usb_kill_urb(mtouch->irq);
1da177e4 LT	161	}
	162
	163	static int mtouchusb_alloc_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	164	{
8baf9ed4	165	dbg("%s - called", __FUNCTION__);
1da177e4	166
8baf9ed4 DT	167	mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
8baf9ed4 DT	168	SLAB_ATOMIC, &mtouch->data_dma);
1da177e4	169
8baf9ed4 DT	170	if (!mtouch->data)
8baf9ed4 DT	171	return -1;
1da177e4	172
8baf9ed4	173	return 0;
1da177e4 LT	174	}
	175
	176	static void mtouchusb_free_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	177	{
8baf9ed4	178	dbg("%s - called", __FUNCTION__);
1da177e4	179
8baf9ed4 DT	180	if (mtouch->data)
	181	usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
	182	mtouch->data, mtouch->data_dma);
1da177e4 LT	183	}
	184
	185	static int mtouchusb_probe(struct usb_interface intf, const struct usb_device_id id)
	186	{
8baf9ed4	187	struct mtouch_usb *mtouch;
c5b7c7c3	188	struct input_dev *input_dev;
8baf9ed4 DT	189	struct usb_host_interface *interface;
	190	struct usb_endpoint_descriptor *endpoint;
	191	struct usb_device *udev = interface_to_usbdev(intf);
8baf9ed4 DT	192	int nRet;
	193
	194	dbg("%s - called", __FUNCTION__);
	195
	196	dbg("%s - setting interface", __FUNCTION__);
	197	interface = intf->cur_altsetting;
	198
	199	dbg("%s - setting endpoint", __FUNCTION__);
	200	endpoint = &interface->endpoint[0].desc;
	201
c5b7c7c3 DT	202	mtouch = kzalloc(sizeof(struct mtouch_usb), GFP_KERNEL);
	203	input_dev = input_allocate_device();
	204	if (!mtouch \|\| !input_dev) {
8baf9ed4	205	err("%s - Out of memory.", __FUNCTION__);
c5b7c7c3	206	goto fail1;
8baf9ed4 DT	207	}
8baf9ed4 DT	208
8baf9ed4	209	dbg("%s - allocating buffers", __FUNCTION__);
c5b7c7c3 DT	210	if (mtouchusb_alloc_buffers(udev, mtouch))
c5b7c7c3 DT	211	goto fail2;
8baf9ed4	212
c5b7c7c3 DT	213	mtouch->udev = udev;
c5b7c7c3 DT	214	mtouch->input = input_dev;
1da177e4 LT	215
1da177e4 LT	216	if (udev->manufacturer)
c5b7c7c3 DT	217	strlcpy(mtouch->name, udev->manufacturer, sizeof(mtouch->name));
	218
	219	if (udev->product) {
	220	if (udev->manufacturer)
	221	strlcat(mtouch->name, " ", sizeof(mtouch->name));
	222	strlcat(mtouch->name, udev->product, sizeof(mtouch->name));
	223	}
1da177e4	224
8baf9ed4	225	if (!strlen(mtouch->name))
c5b7c7c3 DT	226	snprintf(mtouch->name, sizeof(mtouch->name),
	227	"USB Touchscreen %04x:%04x",
	228	le16_to_cpu(udev->descriptor.idVendor),
	229	le16_to_cpu(udev->descriptor.idProduct));
	230
	231	usb_make_path(udev, mtouch->phys, sizeof(mtouch->phys));
	232	strlcpy(mtouch->phys, "/input0", sizeof(mtouch->phys));
	233
	234	input_dev->name = mtouch->name;
	235	input_dev->phys = mtouch->phys;
	236	usb_to_input_id(udev, &input_dev->id);
	237	input_dev->cdev.dev = &intf->dev;
	238	input_dev->private = mtouch;
	239
	240	input_dev->open = mtouchusb_open;
	241	input_dev->close = mtouchusb_close;
	242
	243	input_dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_ABS);
	244	input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
	245	input_set_abs_params(input_dev, ABS_X, MTOUCHUSB_MIN_XC,
	246	raw_coordinates ? MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC,
	247	MTOUCHUSB_XC_FUZZ, MTOUCHUSB_XC_FLAT);
	248	input_set_abs_params(input_dev, ABS_Y, MTOUCHUSB_MIN_YC,
	249	raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC,
	250	MTOUCHUSB_YC_FUZZ, MTOUCHUSB_YC_FLAT);
8baf9ed4 DT	251
	252	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	253	MTOUCHUSB_RESET,
	254	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	255	1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
	256	dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes\|err: %d",
	257	__FUNCTION__, nRet);
	258
	259	dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
	260	mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
	261	if (!mtouch->irq) {
	262	dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
c5b7c7c3	263	goto fail2;
8baf9ed4 DT	264	}
	265
	266	dbg("%s - usb_fill_int_urb", __FUNCTION__);
	267	usb_fill_int_urb(mtouch->irq, mtouch->udev,
	268	usb_rcvintpipe(mtouch->udev, 0x81),
	269	mtouch->data, MTOUCHUSB_REPORT_DATA_SIZE,
	270	mtouchusb_irq, mtouch, endpoint->bInterval);
	271
	272	dbg("%s - input_register_device", __FUNCTION__);
c5b7c7c3	273	input_register_device(mtouch->input);
8baf9ed4 DT	274
	275	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	276	MTOUCHUSB_ASYNC_REPORT,
	277	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	278	1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
	279	dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes\|err: %d",
	280	__FUNCTION__, nRet);
	281
8baf9ed4	282	usb_set_intfdata(intf, mtouch);
8baf9ed4	283	return 0;
c5b7c7c3 DT	284
	285	fail2: mtouchusb_free_buffers(udev, mtouch);
	286	fail1: input_free_device(input_dev);
	287	kfree(mtouch);
	288	return -ENOMEM;
1da177e4 LT	289	}
	290
	291	static void mtouchusb_disconnect(struct usb_interface *intf)
	292	{
8baf9ed4 DT	293	struct mtouch_usb *mtouch = usb_get_intfdata(intf);
	294
	295	dbg("%s - called", __FUNCTION__);
	296	usb_set_intfdata(intf, NULL);
	297	if (mtouch) {
	298	dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
	299	usb_kill_urb(mtouch->irq);
c5b7c7c3	300	input_unregister_device(mtouch->input);
8baf9ed4 DT	301	usb_free_urb(mtouch->irq);
	302	mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
	303	kfree(mtouch);
	304	}
1da177e4 LT	305	}
1da177e4 LT	306
8baf9ed4	307	MODULE_DEVICE_TABLE(usb, mtouchusb_devices);
1da177e4 LT	308
1da177e4 LT	309	static struct usb_driver mtouchusb_driver = {
8baf9ed4 DT	310	.name = "mtouchusb",
	311	.probe = mtouchusb_probe,
	312	.disconnect = mtouchusb_disconnect,
	313	.id_table = mtouchusb_devices,
1da177e4 LT	314	};
1da177e4 LT	315
8baf9ed4 DT	316	static int __init mtouchusb_init(void)
	317	{
	318	dbg("%s - called", __FUNCTION__);
	319	return usb_register(&mtouchusb_driver);
1da177e4 LT	320	}
1da177e4 LT	321
8baf9ed4 DT	322	static void __exit mtouchusb_cleanup(void)
	323	{
	324	dbg("%s - called", __FUNCTION__);
	325	usb_deregister(&mtouchusb_driver);
1da177e4 LT	326	}
	327
	328	module_init(mtouchusb_init);
	329	module_exit(mtouchusb_cleanup);
	330
8baf9ed4 DT	331	MODULE_AUTHOR(DRIVER_AUTHOR);
8baf9ed4 DT	332	MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4	333	MODULE_LICENSE("GPL");