[deliverable/linux.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/config.h>

#ifdef CONFIG_USB_DEBUG
	#define DEBUG
#else
	#undef DEBUG
#endif

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.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 usb_host_interface *interface;
	struct usb_endpoint_descriptor *endpoint;
	struct usb_device *udev = interface_to_usbdev(intf);
	char path[64];
	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;

	if (!(mtouch = kmalloc(sizeof(struct mtouch_usb), GFP_KERNEL))) {
		err("%s - Out of memory.", __FUNCTION__);
		return -ENOMEM;
	}

	memset(mtouch, 0, sizeof(struct mtouch_usb));
	mtouch->udev = udev;

	dbg("%s - allocating buffers", __FUNCTION__);
	if (mtouchusb_alloc_buffers(udev, mtouch)) {
		mtouchusb_free_buffers(udev, mtouch);
		kfree(mtouch);
		return -ENOMEM;
	}

	mtouch->input.private = mtouch;
	mtouch->input.open = mtouchusb_open;
	mtouch->input.close = mtouchusb_close;

	usb_make_path(udev, path, 64);
	sprintf(mtouch->phys, "%s/input0", path);

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

	mtouch->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
	mtouch->input.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
	mtouch->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);

	/* Used to Scale Compensated Data and Flip Y */
	mtouch->input.absmin[ABS_X] = MTOUCHUSB_MIN_XC;
	mtouch->input.absmax[ABS_X] = raw_coordinates ?
					MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC;
	mtouch->input.absfuzz[ABS_X] = MTOUCHUSB_XC_FUZZ;
	mtouch->input.absflat[ABS_X] = MTOUCHUSB_XC_FLAT;
	mtouch->input.absmin[ABS_Y] = MTOUCHUSB_MIN_YC;
	mtouch->input.absmax[ABS_Y] = raw_coordinates ?
					MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC;
	mtouch->input.absfuzz[ABS_Y] = MTOUCHUSB_YC_FUZZ;
	mtouch->input.absflat[ABS_Y] = MTOUCHUSB_YC_FLAT;

	if (udev->manufacturer)
		strcat(mtouch->name, udev->manufacturer);
	if (udev->product)
		sprintf(mtouch->name, "%s %s", mtouch->name, udev->product);

	if (!strlen(mtouch->name))
		sprintf(mtouch->name, "USB Touchscreen %04x:%04x",
			mtouch->input.id.vendor, mtouch->input.id.product);

	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__);
		mtouchusb_free_buffers(udev, mtouch);
		kfree(mtouch);
		return -ENOMEM;
	}

	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);

	printk(KERN_INFO "input: %s on %s\n", mtouch->name, path);
	usb_set_intfdata(intf, mtouch);

	return 0;
}

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 = {
	.owner		= THIS_MODULE,
	.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
	42	#include <linux/config.h>
	43
	44	#ifdef CONFIG_USB_DEBUG
8baf9ed4	45	#define DEBUG
1da177e4	46	#else
8baf9ed4	47	#undef DEBUG
1da177e4 LT	48	#endif
	49
	50	#include <linux/kernel.h>
	51	#include <linux/slab.h>
	52	#include <linux/input.h>
	53	#include <linux/module.h>
	54	#include <linux/init.h>
	55	#include <linux/usb.h>
16a334c0	56	#include <linux/usb_input.h>
1da177e4 LT	57
	58	#define MTOUCHUSB_MIN_XC 0x0
	59	#define MTOUCHUSB_MAX_RAW_XC 0x4000
	60	#define MTOUCHUSB_MAX_CALIB_XC 0xffff
	61	#define MTOUCHUSB_XC_FUZZ 0x0
	62	#define MTOUCHUSB_XC_FLAT 0x0
	63	#define MTOUCHUSB_MIN_YC 0x0
	64	#define MTOUCHUSB_MAX_RAW_YC 0x4000
	65	#define MTOUCHUSB_MAX_CALIB_YC 0xffff
	66	#define MTOUCHUSB_YC_FUZZ 0x0
	67	#define MTOUCHUSB_YC_FLAT 0x0
	68
	69	#define MTOUCHUSB_ASYNC_REPORT 1
	70	#define MTOUCHUSB_RESET 7
	71	#define MTOUCHUSB_REPORT_DATA_SIZE 11
	72	#define MTOUCHUSB_REQ_CTRLLR_ID 10
	73
	74	#define MTOUCHUSB_GET_RAW_XC(data) (data[8]<<8 \| data[7])
	75	#define MTOUCHUSB_GET_CALIB_XC(data) (data[4]<<8 \| data[3])
	76	#define MTOUCHUSB_GET_RAW_YC(data) (data[10]<<8 \| data[9])
	77	#define MTOUCHUSB_GET_CALIB_YC(data) (data[6]<<8 \| data[5])
	78	#define MTOUCHUSB_GET_XC(data) (raw_coordinates ? \
	79	MTOUCHUSB_GET_RAW_XC(data) : \
	80	MTOUCHUSB_GET_CALIB_XC(data))
	81	#define MTOUCHUSB_GET_YC(data) (raw_coordinates ? \
	82	MTOUCHUSB_GET_RAW_YC(data) : \
	83	MTOUCHUSB_GET_CALIB_YC(data))
	84	#define MTOUCHUSB_GET_TOUCHED(data) ((data[2] & 0x40) ? 1:0)
	85
	86	#define DRIVER_VERSION "v1.5"
	87	#define DRIVER_AUTHOR "Todd E. Johnson, tejohnson@yahoo.com"
	88	#define DRIVER_DESC "3M USB Touchscreen Driver"
	89	#define DRIVER_LICENSE "GPL"
	90
	91	static int raw_coordinates = 1;
	92
	93	module_param(raw_coordinates, bool, S_IRUGO \| S_IWUSR);
	94	MODULE_PARM_DESC(raw_coordinates, "report raw coordinate values (y, default) or hardware-calibrated coordinate values (n)");
	95
	96	struct mtouch_usb {
8baf9ed4 DT	97	unsigned char *data;
	98	dma_addr_t data_dma;
	99	struct urb *irq;
	100	struct usb_device *udev;
	101	struct input_dev input;
8baf9ed4 DT	102	char name[128];
8baf9ed4 DT	103	char phys[64];
1da177e4 LT	104	};
1da177e4 LT	105
8baf9ed4 DT	106	static struct usb_device_id mtouchusb_devices[] = {
	107	{ USB_DEVICE(0x0596, 0x0001) },
	108	{ }
1da177e4 LT	109	};
	110
	111	static void mtouchusb_irq(struct urb urb, struct pt_regs regs)
	112	{
8baf9ed4 DT	113	struct mtouch_usb *mtouch = urb->context;
	114	int retval;
	115
	116	switch (urb->status) {
	117	case 0:
	118	/* success */
	119	break;
	120	case -ETIMEDOUT:
	121	/* this urb is timing out */
	122	dbg("%s - urb timed out - was the device unplugged?",
	123	__FUNCTION__);
	124	return;
	125	case -ECONNRESET:
	126	case -ENOENT:
	127	case -ESHUTDOWN:
	128	/* this urb is terminated, clean up */
	129	dbg("%s - urb shutting down with status: %d",
	130	__FUNCTION__, urb->status);
	131	return;
	132	default:
	133	dbg("%s - nonzero urb status received: %d",
	134	__FUNCTION__, urb->status);
	135	goto exit;
	136	}
	137
	138	input_regs(&mtouch->input, regs);
	139	input_report_key(&mtouch->input, BTN_TOUCH,
	140	MTOUCHUSB_GET_TOUCHED(mtouch->data));
	141	input_report_abs(&mtouch->input, ABS_X, MTOUCHUSB_GET_XC(mtouch->data));
	142	input_report_abs(&mtouch->input, ABS_Y,
1da177e4	143	(raw_coordinates ? MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC)
8baf9ed4 DT	144	- MTOUCHUSB_GET_YC(mtouch->data));
8baf9ed4 DT	145	input_sync(&mtouch->input);
1da177e4 LT	146
1da177e4 LT	147	exit:
8baf9ed4 DT	148	retval = usb_submit_urb(urb, GFP_ATOMIC);
	149	if (retval)
	150	err("%s - usb_submit_urb failed with result: %d",
	151	__FUNCTION__, retval);
1da177e4 LT	152	}
1da177e4 LT	153
8baf9ed4	154	static int mtouchusb_open(struct input_dev *input)
1da177e4	155	{
8baf9ed4	156	struct mtouch_usb *mtouch = input->private;
1da177e4	157
8baf9ed4	158	mtouch->irq->dev = mtouch->udev;
1da177e4	159
65cde54b	160	if (usb_submit_urb(mtouch->irq, GFP_ATOMIC))
8baf9ed4	161	return -EIO;
1da177e4	162
8baf9ed4	163	return 0;
1da177e4 LT	164	}
1da177e4 LT	165
8baf9ed4	166	static void mtouchusb_close(struct input_dev *input)
1da177e4	167	{
8baf9ed4	168	struct mtouch_usb *mtouch = input->private;
1da177e4	169
65cde54b	170	usb_kill_urb(mtouch->irq);
1da177e4 LT	171	}
	172
	173	static int mtouchusb_alloc_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	174	{
8baf9ed4	175	dbg("%s - called", __FUNCTION__);
1da177e4	176
8baf9ed4 DT	177	mtouch->data = usb_buffer_alloc(udev, MTOUCHUSB_REPORT_DATA_SIZE,
8baf9ed4 DT	178	SLAB_ATOMIC, &mtouch->data_dma);
1da177e4	179
8baf9ed4 DT	180	if (!mtouch->data)
8baf9ed4 DT	181	return -1;
1da177e4	182
8baf9ed4	183	return 0;
1da177e4 LT	184	}
	185
	186	static void mtouchusb_free_buffers(struct usb_device udev, struct mtouch_usb mtouch)
	187	{
8baf9ed4	188	dbg("%s - called", __FUNCTION__);
1da177e4	189
8baf9ed4 DT	190	if (mtouch->data)
	191	usb_buffer_free(udev, MTOUCHUSB_REPORT_DATA_SIZE,
	192	mtouch->data, mtouch->data_dma);
1da177e4 LT	193	}
	194
	195	static int mtouchusb_probe(struct usb_interface intf, const struct usb_device_id id)
	196	{
8baf9ed4 DT	197	struct mtouch_usb *mtouch;
	198	struct usb_host_interface *interface;
	199	struct usb_endpoint_descriptor *endpoint;
	200	struct usb_device *udev = interface_to_usbdev(intf);
	201	char path[64];
	202	int nRet;
	203
	204	dbg("%s - called", __FUNCTION__);
	205
	206	dbg("%s - setting interface", __FUNCTION__);
	207	interface = intf->cur_altsetting;
	208
	209	dbg("%s - setting endpoint", __FUNCTION__);
	210	endpoint = &interface->endpoint[0].desc;
	211
	212	if (!(mtouch = kmalloc(sizeof(struct mtouch_usb), GFP_KERNEL))) {
	213	err("%s - Out of memory.", __FUNCTION__);
	214	return -ENOMEM;
	215	}
	216
	217	memset(mtouch, 0, sizeof(struct mtouch_usb));
	218	mtouch->udev = udev;
	219
	220	dbg("%s - allocating buffers", __FUNCTION__);
	221	if (mtouchusb_alloc_buffers(udev, mtouch)) {
	222	mtouchusb_free_buffers(udev, mtouch);
	223	kfree(mtouch);
	224	return -ENOMEM;
	225	}
	226
	227	mtouch->input.private = mtouch;
	228	mtouch->input.open = mtouchusb_open;
	229	mtouch->input.close = mtouchusb_close;
	230
	231	usb_make_path(udev, path, 64);
	232	sprintf(mtouch->phys, "%s/input0", path);
	233
	234	mtouch->input.name = mtouch->name;
	235	mtouch->input.phys = mtouch->phys;
16a334c0	236	usb_to_input_id(udev, &mtouch->input.id);
8baf9ed4 DT	237	mtouch->input.dev = &intf->dev;
	238
	239	mtouch->input.evbit[0] = BIT(EV_KEY) \| BIT(EV_ABS);
	240	mtouch->input.absbit[0] = BIT(ABS_X) \| BIT(ABS_Y);
	241	mtouch->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
	242
	243	/* Used to Scale Compensated Data and Flip Y */
	244	mtouch->input.absmin[ABS_X] = MTOUCHUSB_MIN_XC;
	245	mtouch->input.absmax[ABS_X] = raw_coordinates ?
	246	MTOUCHUSB_MAX_RAW_XC : MTOUCHUSB_MAX_CALIB_XC;
	247	mtouch->input.absfuzz[ABS_X] = MTOUCHUSB_XC_FUZZ;
	248	mtouch->input.absflat[ABS_X] = MTOUCHUSB_XC_FLAT;
	249	mtouch->input.absmin[ABS_Y] = MTOUCHUSB_MIN_YC;
	250	mtouch->input.absmax[ABS_Y] = raw_coordinates ?
	251	MTOUCHUSB_MAX_RAW_YC : MTOUCHUSB_MAX_CALIB_YC;
	252	mtouch->input.absfuzz[ABS_Y] = MTOUCHUSB_YC_FUZZ;
	253	mtouch->input.absflat[ABS_Y] = MTOUCHUSB_YC_FLAT;
1da177e4 LT	254
	255	if (udev->manufacturer)
	256	strcat(mtouch->name, udev->manufacturer);
	257	if (udev->product)
	258	sprintf(mtouch->name, "%s %s", mtouch->name, udev->product);
	259
8baf9ed4 DT	260	if (!strlen(mtouch->name))
	261	sprintf(mtouch->name, "USB Touchscreen %04x:%04x",
	262	mtouch->input.id.vendor, mtouch->input.id.product);
	263
	264	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	265	MTOUCHUSB_RESET,
	266	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	267	1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
	268	dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes\|err: %d",
	269	__FUNCTION__, nRet);
	270
	271	dbg("%s - usb_alloc_urb: mtouch->irq", __FUNCTION__);
	272	mtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
	273	if (!mtouch->irq) {
	274	dbg("%s - usb_alloc_urb failed: mtouch->irq", __FUNCTION__);
	275	mtouchusb_free_buffers(udev, mtouch);
	276	kfree(mtouch);
	277	return -ENOMEM;
	278	}
	279
	280	dbg("%s - usb_fill_int_urb", __FUNCTION__);
	281	usb_fill_int_urb(mtouch->irq, mtouch->udev,
	282	usb_rcvintpipe(mtouch->udev, 0x81),
	283	mtouch->data, MTOUCHUSB_REPORT_DATA_SIZE,
	284	mtouchusb_irq, mtouch, endpoint->bInterval);
	285
	286	dbg("%s - input_register_device", __FUNCTION__);
	287	input_register_device(&mtouch->input);
	288
	289	nRet = usb_control_msg(mtouch->udev, usb_rcvctrlpipe(udev, 0),
	290	MTOUCHUSB_ASYNC_REPORT,
	291	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	292	1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
	293	dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes\|err: %d",
	294	__FUNCTION__, nRet);
	295
	296	printk(KERN_INFO "input: %s on %s\n", mtouch->name, path);
	297	usb_set_intfdata(intf, mtouch);
	298
	299	return 0;
1da177e4 LT	300	}
	301
	302	static void mtouchusb_disconnect(struct usb_interface *intf)
	303	{
8baf9ed4 DT	304	struct mtouch_usb *mtouch = usb_get_intfdata(intf);
	305
	306	dbg("%s - called", __FUNCTION__);
	307	usb_set_intfdata(intf, NULL);
	308	if (mtouch) {
	309	dbg("%s - mtouch is initialized, cleaning up", __FUNCTION__);
	310	usb_kill_urb(mtouch->irq);
	311	input_unregister_device(&mtouch->input);
	312	usb_free_urb(mtouch->irq);
	313	mtouchusb_free_buffers(interface_to_usbdev(intf), mtouch);
	314	kfree(mtouch);
	315	}
1da177e4 LT	316	}
1da177e4 LT	317
8baf9ed4	318	MODULE_DEVICE_TABLE(usb, mtouchusb_devices);
1da177e4 LT	319
1da177e4 LT	320	static struct usb_driver mtouchusb_driver = {
8baf9ed4 DT	321	.owner = THIS_MODULE,
	322	.name = "mtouchusb",
	323	.probe = mtouchusb_probe,
	324	.disconnect = mtouchusb_disconnect,
	325	.id_table = mtouchusb_devices,
1da177e4 LT	326	};
1da177e4 LT	327
8baf9ed4 DT	328	static int __init mtouchusb_init(void)
	329	{
	330	dbg("%s - called", __FUNCTION__);
	331	return usb_register(&mtouchusb_driver);
1da177e4 LT	332	}
1da177e4 LT	333
8baf9ed4 DT	334	static void __exit mtouchusb_cleanup(void)
	335	{
	336	dbg("%s - called", __FUNCTION__);
	337	usb_deregister(&mtouchusb_driver);
1da177e4 LT	338	}
	339
	340	module_init(mtouchusb_init);
	341	module_exit(mtouchusb_cleanup);
	342
8baf9ed4 DT	343	MODULE_AUTHOR(DRIVER_AUTHOR);
8baf9ed4 DT	344	MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4	345	MODULE_LICENSE("GPL");