1 /******************************************************************************
3 * Driver for USB Touchscreens, supporting those devices:
5 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
12 * - IRTOUCHSYSTEMS/UNITOP
14 * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch>
15 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of the
20 * License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful, but
23 * WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 * Driver is based on touchkitusb.c
32 * - ITM parts are from itmtouch.c
33 * - 3M parts are from mtouchusb.c
34 * - PanJit parts are from an unmerged driver by Lanslott Gish
35 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
36 * driver from Marius Vollmer
38 *****************************************************************************/
42 #include <linux/kernel.h>
43 #include <linux/slab.h>
44 #include <linux/input.h>
45 #include <linux/module.h>
46 #include <linux/init.h>
47 #include <linux/usb.h>
48 #include <linux/usb/input.h>
51 #define DRIVER_VERSION "v0.5"
52 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
53 #define DRIVER_DESC "USB Touchscreen Driver"
56 module_param(swap_xy
, bool, 0644);
57 MODULE_PARM_DESC(swap_xy
, "If set X and Y axes are swapped.");
59 /* device specifc data/functions */
61 struct usbtouch_device_info
{
64 int min_press
, max_press
;
68 void (*process_pkt
) (struct usbtouch_usb
*usbtouch
, unsigned char *pkt
, int len
);
69 int (*get_pkt_len
) (unsigned char *pkt
, int len
);
70 int (*read_data
) (struct usbtouch_usb
*usbtouch
, unsigned char *pkt
);
71 int (*init
) (struct usbtouch_usb
*usbtouch
);
74 #define USBTOUCH_FLG_BUFFER 0x01
77 /* a usbtouch device */
81 unsigned char *buffer
;
84 struct usb_device
*udev
;
85 struct input_dev
*input
;
86 struct usbtouch_device_info
*type
;
95 #if defined(CONFIG_TOUCHSCREEN_USB_EGALAX) || defined(CONFIG_TOUCHSCREEN_USB_ETURBO)
100 static void usbtouch_process_multi(struct usbtouch_usb
*usbtouch
,
101 unsigned char *pkt
, int len
);
117 static struct usb_device_id usbtouch_devices
[] = {
118 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
119 {USB_DEVICE(0x3823, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
120 {USB_DEVICE(0x3823, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
121 {USB_DEVICE(0x0123, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
122 {USB_DEVICE(0x0eef, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
123 {USB_DEVICE(0x0eef, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
124 {USB_DEVICE(0x1234, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
125 {USB_DEVICE(0x1234, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
128 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
129 {USB_DEVICE(0x134c, 0x0001), .driver_info
= DEVTYPE_PANJIT
},
130 {USB_DEVICE(0x134c, 0x0002), .driver_info
= DEVTYPE_PANJIT
},
131 {USB_DEVICE(0x134c, 0x0003), .driver_info
= DEVTYPE_PANJIT
},
132 {USB_DEVICE(0x134c, 0x0004), .driver_info
= DEVTYPE_PANJIT
},
135 #ifdef CONFIG_TOUCHSCREEN_USB_3M
136 {USB_DEVICE(0x0596, 0x0001), .driver_info
= DEVTYPE_3M
},
139 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
140 {USB_DEVICE(0x0403, 0xf9e9), .driver_info
= DEVTYPE_ITM
},
143 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
144 {USB_DEVICE(0x1234, 0x5678), .driver_info
= DEVTYPE_ETURBO
},
147 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
148 {USB_DEVICE(0x0637, 0x0001), .driver_info
= DEVTYPE_GUNZE
},
151 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
152 {USB_DEVICE(0x0afa, 0x03e8), .driver_info
= DEVTYPE_DMC_TSC10
},
155 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
156 {USB_DEVICE(0x595a, 0x0001), .driver_info
= DEVTYPE_IRTOUCH
},
157 {USB_DEVICE(0x6615, 0x0001), .driver_info
= DEVTYPE_IRTOUCH
},
164 /*****************************************************************************
168 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
170 #define EGALAX_PKT_TYPE_MASK 0xFE
171 #define EGALAX_PKT_TYPE_REPT 0x80
172 #define EGALAX_PKT_TYPE_DIAG 0x0A
174 static int egalax_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
176 if ((pkt
[0] & EGALAX_PKT_TYPE_MASK
) != EGALAX_PKT_TYPE_REPT
)
179 dev
->x
= ((pkt
[3] & 0x0F) << 7) | (pkt
[4] & 0x7F);
180 dev
->y
= ((pkt
[1] & 0x0F) << 7) | (pkt
[2] & 0x7F);
181 dev
->touch
= pkt
[0] & 0x01;
186 static int egalax_get_pkt_len(unsigned char *buf
, int len
)
188 switch (buf
[0] & EGALAX_PKT_TYPE_MASK
) {
189 case EGALAX_PKT_TYPE_REPT
:
192 case EGALAX_PKT_TYPE_DIAG
:
204 /*****************************************************************************
207 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
208 static int panjit_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
210 dev
->x
= ((pkt
[2] & 0x0F) << 8) | pkt
[1];
211 dev
->y
= ((pkt
[4] & 0x0F) << 8) | pkt
[3];
212 dev
->touch
= pkt
[0] & 0x01;
219 /*****************************************************************************
222 #ifdef CONFIG_TOUCHSCREEN_USB_3M
224 #define MTOUCHUSB_ASYNC_REPORT 1
225 #define MTOUCHUSB_RESET 7
226 #define MTOUCHUSB_REQ_CTRLLR_ID 10
228 static int mtouch_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
230 dev
->x
= (pkt
[8] << 8) | pkt
[7];
231 dev
->y
= (pkt
[10] << 8) | pkt
[9];
232 dev
->touch
= (pkt
[2] & 0x40) ? 1 : 0;
237 static int mtouch_init(struct usbtouch_usb
*usbtouch
)
241 ret
= usb_control_msg(usbtouch
->udev
, usb_rcvctrlpipe(usbtouch
->udev
, 0),
243 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
244 1, 0, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
245 dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
251 for (i
= 0; i
< 3; i
++) {
252 ret
= usb_control_msg(usbtouch
->udev
, usb_rcvctrlpipe(usbtouch
->udev
, 0),
253 MTOUCHUSB_ASYNC_REPORT
,
254 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
255 1, 1, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
256 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
269 /*****************************************************************************
272 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
273 static int itm_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
277 * ITM devices report invalid x/y data if not touched.
278 * if the screen was touched before but is not touched any more
279 * report touch as 0 with the last valid x/y data once. then stop
280 * reporting data until touched again.
282 dev
->press
= ((pkt
[2] & 0x01) << 7) | (pkt
[5] & 0x7F);
284 touch
= ~pkt
[7] & 0x20;
294 dev
->x
= ((pkt
[0] & 0x1F) << 7) | (pkt
[3] & 0x7F);
295 dev
->y
= ((pkt
[1] & 0x1F) << 7) | (pkt
[4] & 0x7F);
303 /*****************************************************************************
306 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
307 static int eturbo_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
311 /* packets should start with sync */
312 if (!(pkt
[0] & 0x80))
315 shift
= (6 - (pkt
[0] & 0x03));
316 dev
->x
= ((pkt
[3] << 7) | pkt
[4]) >> shift
;
317 dev
->y
= ((pkt
[1] << 7) | pkt
[2]) >> shift
;
318 dev
->touch
= (pkt
[0] & 0x10) ? 1 : 0;
323 static int eturbo_get_pkt_len(unsigned char *buf
, int len
)
334 /*****************************************************************************
337 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
338 static int gunze_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
340 if (!(pkt
[0] & 0x80) || ((pkt
[1] | pkt
[2] | pkt
[3]) & 0x80))
343 dev
->x
= ((pkt
[0] & 0x1F) << 7) | (pkt
[2] & 0x7F);
344 dev
->y
= ((pkt
[1] & 0x1F) << 7) | (pkt
[3] & 0x7F);
345 dev
->touch
= pkt
[0] & 0x20;
351 /*****************************************************************************
354 * Documentation about the controller and it's protocol can be found at
355 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
356 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
358 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
360 /* supported data rates. currently using 130 */
361 #define TSC10_RATE_POINT 0x50
362 #define TSC10_RATE_30 0x40
363 #define TSC10_RATE_50 0x41
364 #define TSC10_RATE_80 0x42
365 #define TSC10_RATE_100 0x43
366 #define TSC10_RATE_130 0x44
367 #define TSC10_RATE_150 0x45
370 #define TSC10_CMD_RESET 0x55
371 #define TSC10_CMD_RATE 0x05
372 #define TSC10_CMD_DATA1 0x01
374 static int dmc_tsc10_init(struct usbtouch_usb
*usbtouch
)
376 struct usb_device
*dev
= usbtouch
->udev
;
378 unsigned char buf
[2];
381 buf
[0] = buf
[1] = 0xFF;
382 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
384 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
385 0, 0, buf
, 2, USB_CTRL_SET_TIMEOUT
);
388 if (buf
[0] != 0x06 || buf
[1] != 0x00)
391 /* set coordinate output rate */
392 buf
[0] = buf
[1] = 0xFF;
393 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
395 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
396 TSC10_RATE_150
, 0, buf
, 2, USB_CTRL_SET_TIMEOUT
);
399 if (buf
[0] != 0x06 || buf
[1] != 0x00)
402 /* start sending data */
403 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
405 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
406 0, 0, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
414 static int dmc_tsc10_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
416 dev
->x
= ((pkt
[2] & 0x03) << 8) | pkt
[1];
417 dev
->y
= ((pkt
[4] & 0x03) << 8) | pkt
[3];
418 dev
->touch
= pkt
[0] & 0x01;
425 /*****************************************************************************
428 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
429 static int irtouch_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
431 dev
->x
= (pkt
[3] << 8) | pkt
[2];
432 dev
->y
= (pkt
[5] << 8) | pkt
[4];
433 dev
->touch
= (pkt
[1] & 0x03) ? 1 : 0;
440 /*****************************************************************************
441 * the different device descriptors
443 static struct usbtouch_device_info usbtouch_dev_info
[] = {
444 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
451 .flags
= USBTOUCH_FLG_BUFFER
,
452 .process_pkt
= usbtouch_process_multi
,
453 .get_pkt_len
= egalax_get_pkt_len
,
454 .read_data
= egalax_read_data
,
458 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
465 .read_data
= panjit_read_data
,
469 #ifdef CONFIG_TOUCHSCREEN_USB_3M
476 .read_data
= mtouch_read_data
,
481 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
489 .read_data
= itm_read_data
,
493 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
500 .flags
= USBTOUCH_FLG_BUFFER
,
501 .process_pkt
= usbtouch_process_multi
,
502 .get_pkt_len
= eturbo_get_pkt_len
,
503 .read_data
= eturbo_read_data
,
507 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
514 .read_data
= gunze_read_data
,
518 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
519 [DEVTYPE_DMC_TSC10
] = {
525 .init
= dmc_tsc10_init
,
526 .read_data
= dmc_tsc10_read_data
,
530 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
531 [DEVTYPE_IRTOUCH
] = {
537 .read_data
= irtouch_read_data
,
543 /*****************************************************************************
546 static void usbtouch_process_pkt(struct usbtouch_usb
*usbtouch
,
547 unsigned char *pkt
, int len
)
549 struct usbtouch_device_info
*type
= usbtouch
->type
;
551 if (!type
->read_data(usbtouch
, pkt
))
554 input_report_key(usbtouch
->input
, BTN_TOUCH
, usbtouch
->touch
);
557 input_report_abs(usbtouch
->input
, ABS_X
, usbtouch
->y
);
558 input_report_abs(usbtouch
->input
, ABS_Y
, usbtouch
->x
);
560 input_report_abs(usbtouch
->input
, ABS_X
, usbtouch
->x
);
561 input_report_abs(usbtouch
->input
, ABS_Y
, usbtouch
->y
);
564 input_report_abs(usbtouch
->input
, ABS_PRESSURE
, usbtouch
->press
);
565 input_sync(usbtouch
->input
);
570 static void usbtouch_process_multi(struct usbtouch_usb
*usbtouch
,
571 unsigned char *pkt
, int len
)
573 unsigned char *buffer
;
574 int pkt_len
, pos
, buf_len
, tmp
;
577 if (unlikely(usbtouch
->buf_len
)) {
578 /* try to get size */
579 pkt_len
= usbtouch
->type
->get_pkt_len(
580 usbtouch
->buffer
, usbtouch
->buf_len
);
583 if (unlikely(!pkt_len
))
586 /* need to append -pkt_len bytes before able to get size */
587 if (unlikely(pkt_len
< 0)) {
588 int append
= -pkt_len
;
589 if (unlikely(append
> len
))
591 if (usbtouch
->buf_len
+ append
>= usbtouch
->type
->rept_size
)
593 memcpy(usbtouch
->buffer
+ usbtouch
->buf_len
, pkt
, append
);
594 usbtouch
->buf_len
+= append
;
596 pkt_len
= usbtouch
->type
->get_pkt_len(
597 usbtouch
->buffer
, usbtouch
->buf_len
);
603 tmp
= pkt_len
- usbtouch
->buf_len
;
604 if (usbtouch
->buf_len
+ tmp
>= usbtouch
->type
->rept_size
)
606 memcpy(usbtouch
->buffer
+ usbtouch
->buf_len
, pkt
, tmp
);
607 usbtouch_process_pkt(usbtouch
, usbtouch
->buffer
, pkt_len
);
616 /* loop over the received packet, process */
618 while (pos
< buf_len
) {
620 pkt_len
= usbtouch
->type
->get_pkt_len(buffer
+ pos
, len
);
622 /* unknown packet: drop everything */
623 if (unlikely(!pkt_len
))
626 /* full packet: process */
627 if (likely((pkt_len
> 0) && (pkt_len
<= buf_len
- pos
))) {
628 usbtouch_process_pkt(usbtouch
, buffer
+ pos
, pkt_len
);
630 /* incomplete packet: save in buffer */
631 memcpy(usbtouch
->buffer
, buffer
+ pos
, buf_len
- pos
);
632 usbtouch
->buf_len
= buf_len
- pos
;
639 usbtouch
->buf_len
= 0;
645 static void usbtouch_irq(struct urb
*urb
)
647 struct usbtouch_usb
*usbtouch
= urb
->context
;
650 switch (urb
->status
) {
655 /* this urb is timing out */
656 dbg("%s - urb timed out - was the device unplugged?",
662 /* this urb is terminated, clean up */
663 dbg("%s - urb shutting down with status: %d",
664 __FUNCTION__
, urb
->status
);
667 dbg("%s - nonzero urb status received: %d",
668 __FUNCTION__
, urb
->status
);
672 usbtouch
->type
->process_pkt(usbtouch
, usbtouch
->data
, urb
->actual_length
);
675 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
677 err("%s - usb_submit_urb failed with result: %d",
678 __FUNCTION__
, retval
);
681 static int usbtouch_open(struct input_dev
*input
)
683 struct usbtouch_usb
*usbtouch
= input_get_drvdata(input
);
685 usbtouch
->irq
->dev
= usbtouch
->udev
;
687 if (usb_submit_urb(usbtouch
->irq
, GFP_KERNEL
))
693 static void usbtouch_close(struct input_dev
*input
)
695 struct usbtouch_usb
*usbtouch
= input_get_drvdata(input
);
697 usb_kill_urb(usbtouch
->irq
);
701 static void usbtouch_free_buffers(struct usb_device
*udev
,
702 struct usbtouch_usb
*usbtouch
)
704 usb_buffer_free(udev
, usbtouch
->type
->rept_size
,
705 usbtouch
->data
, usbtouch
->data_dma
);
706 kfree(usbtouch
->buffer
);
710 static int usbtouch_probe(struct usb_interface
*intf
,
711 const struct usb_device_id
*id
)
713 struct usbtouch_usb
*usbtouch
;
714 struct input_dev
*input_dev
;
715 struct usb_host_interface
*interface
;
716 struct usb_endpoint_descriptor
*endpoint
;
717 struct usb_device
*udev
= interface_to_usbdev(intf
);
718 struct usbtouch_device_info
*type
;
721 interface
= intf
->cur_altsetting
;
722 endpoint
= &interface
->endpoint
[0].desc
;
724 usbtouch
= kzalloc(sizeof(struct usbtouch_usb
), GFP_KERNEL
);
725 input_dev
= input_allocate_device();
726 if (!usbtouch
|| !input_dev
)
729 type
= &usbtouch_dev_info
[id
->driver_info
];
730 usbtouch
->type
= type
;
731 if (!type
->process_pkt
)
732 type
->process_pkt
= usbtouch_process_pkt
;
734 usbtouch
->data
= usb_buffer_alloc(udev
, type
->rept_size
,
735 GFP_KERNEL
, &usbtouch
->data_dma
);
739 if (type
->flags
& USBTOUCH_FLG_BUFFER
) {
740 usbtouch
->buffer
= kmalloc(type
->rept_size
, GFP_KERNEL
);
741 if (!usbtouch
->buffer
)
742 goto out_free_buffers
;
745 usbtouch
->irq
= usb_alloc_urb(0, GFP_KERNEL
);
746 if (!usbtouch
->irq
) {
747 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__
);
748 goto out_free_buffers
;
751 usbtouch
->udev
= udev
;
752 usbtouch
->input
= input_dev
;
754 if (udev
->manufacturer
)
755 strlcpy(usbtouch
->name
, udev
->manufacturer
, sizeof(usbtouch
->name
));
758 if (udev
->manufacturer
)
759 strlcat(usbtouch
->name
, " ", sizeof(usbtouch
->name
));
760 strlcat(usbtouch
->name
, udev
->product
, sizeof(usbtouch
->name
));
763 if (!strlen(usbtouch
->name
))
764 snprintf(usbtouch
->name
, sizeof(usbtouch
->name
),
765 "USB Touchscreen %04x:%04x",
766 le16_to_cpu(udev
->descriptor
.idVendor
),
767 le16_to_cpu(udev
->descriptor
.idProduct
));
769 usb_make_path(udev
, usbtouch
->phys
, sizeof(usbtouch
->phys
));
770 strlcpy(usbtouch
->phys
, "/input0", sizeof(usbtouch
->phys
));
772 input_dev
->name
= usbtouch
->name
;
773 input_dev
->phys
= usbtouch
->phys
;
774 usb_to_input_id(udev
, &input_dev
->id
);
775 input_dev
->dev
.parent
= &intf
->dev
;
777 input_set_drvdata(input_dev
, usbtouch
);
779 input_dev
->open
= usbtouch_open
;
780 input_dev
->close
= usbtouch_close
;
782 input_dev
->evbit
[0] = BIT(EV_KEY
) | BIT(EV_ABS
);
783 input_dev
->keybit
[LONG(BTN_TOUCH
)] = BIT(BTN_TOUCH
);
784 input_set_abs_params(input_dev
, ABS_X
, type
->min_xc
, type
->max_xc
, 0, 0);
785 input_set_abs_params(input_dev
, ABS_Y
, type
->min_yc
, type
->max_yc
, 0, 0);
787 input_set_abs_params(input_dev
, ABS_PRESSURE
, type
->min_press
,
788 type
->max_press
, 0, 0);
790 usb_fill_int_urb(usbtouch
->irq
, usbtouch
->udev
,
791 usb_rcvintpipe(usbtouch
->udev
, endpoint
->bEndpointAddress
),
792 usbtouch
->data
, type
->rept_size
,
793 usbtouch_irq
, usbtouch
, endpoint
->bInterval
);
795 usbtouch
->irq
->dev
= usbtouch
->udev
;
796 usbtouch
->irq
->transfer_dma
= usbtouch
->data_dma
;
797 usbtouch
->irq
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
799 /* device specific init */
801 err
= type
->init(usbtouch
);
803 dbg("%s - type->init() failed, err: %d", __FUNCTION__
, err
);
804 goto out_free_buffers
;
808 err
= input_register_device(usbtouch
->input
);
810 dbg("%s - input_register_device failed, err: %d", __FUNCTION__
, err
);
811 goto out_free_buffers
;
814 usb_set_intfdata(intf
, usbtouch
);
819 usbtouch_free_buffers(udev
, usbtouch
);
821 input_free_device(input_dev
);
826 static void usbtouch_disconnect(struct usb_interface
*intf
)
828 struct usbtouch_usb
*usbtouch
= usb_get_intfdata(intf
);
830 dbg("%s - called", __FUNCTION__
);
835 dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__
);
836 usb_set_intfdata(intf
, NULL
);
837 usb_kill_urb(usbtouch
->irq
);
838 input_unregister_device(usbtouch
->input
);
839 usb_free_urb(usbtouch
->irq
);
840 usbtouch_free_buffers(interface_to_usbdev(intf
), usbtouch
);
844 MODULE_DEVICE_TABLE(usb
, usbtouch_devices
);
846 static struct usb_driver usbtouch_driver
= {
847 .name
= "usbtouchscreen",
848 .probe
= usbtouch_probe
,
849 .disconnect
= usbtouch_disconnect
,
850 .id_table
= usbtouch_devices
,
853 static int __init
usbtouch_init(void)
855 return usb_register(&usbtouch_driver
);
858 static void __exit
usbtouch_cleanup(void)
860 usb_deregister(&usbtouch_driver
);
863 module_init(usbtouch_init
);
864 module_exit(usbtouch_cleanup
);
866 MODULE_AUTHOR(DRIVER_AUTHOR
);
867 MODULE_DESCRIPTION(DRIVER_DESC
);
868 MODULE_LICENSE("GPL");
870 MODULE_ALIAS("touchkitusb");
871 MODULE_ALIAS("itmtouch");
872 MODULE_ALIAS("mtouchusb");