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
15 * - GoTop Super_Q2/GogoPen/PenPower tablets
17 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
18 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
20 * This program is free software; you can redistribute it and/or
21 * modify it under the terms of the GNU General Public License as
22 * published by the Free Software Foundation; either version 2 of the
23 * License, or (at your option) any later version.
25 * This program is distributed in the hope that it will be useful, but
26 * WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
28 * General Public License for more details.
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
34 * Driver is based on touchkitusb.c
35 * - ITM parts are from itmtouch.c
36 * - 3M parts are from mtouchusb.c
37 * - PanJit parts are from an unmerged driver by Lanslott Gish
38 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
39 * driver from Marius Vollmer
41 *****************************************************************************/
45 #include <linux/kernel.h>
46 #include <linux/slab.h>
47 #include <linux/input.h>
48 #include <linux/module.h>
49 #include <linux/init.h>
50 #include <linux/usb.h>
51 #include <linux/usb/input.h>
52 #include <linux/hid.h>
55 #define DRIVER_VERSION "v0.6"
56 #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
57 #define DRIVER_DESC "USB Touchscreen Driver"
60 module_param(swap_xy
, bool, 0644);
61 MODULE_PARM_DESC(swap_xy
, "If set X and Y axes are swapped.");
63 /* device specifc data/functions */
65 struct usbtouch_device_info
{
68 int min_press
, max_press
;
71 void (*process_pkt
) (struct usbtouch_usb
*usbtouch
, unsigned char *pkt
, int len
);
74 * used to get the packet len. possible return values:
77 * < 0: -return value more bytes needed
79 int (*get_pkt_len
) (unsigned char *pkt
, int len
);
81 int (*read_data
) (struct usbtouch_usb
*usbtouch
, unsigned char *pkt
);
82 int (*init
) (struct usbtouch_usb
*usbtouch
);
85 /* a usbtouch device */
89 unsigned char *buffer
;
92 struct usb_device
*udev
;
93 struct input_dev
*input
;
94 struct usbtouch_device_info
*type
;
115 DEVTYPE_GENERAL_TOUCH
,
119 #define USB_DEVICE_HID_CLASS(vend, prod) \
120 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
121 | USB_DEVICE_ID_MATCH_DEVICE, \
122 .idVendor = (vend), \
123 .idProduct = (prod), \
124 .bInterfaceClass = USB_INTERFACE_CLASS_HID, \
125 .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE
127 static struct usb_device_id usbtouch_devices
[] = {
128 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
129 /* ignore the HID capable devices, handled by usbhid */
130 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info
= DEVTYPE_IGNORE
},
131 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info
= DEVTYPE_IGNORE
},
133 /* normal device IDs */
134 {USB_DEVICE(0x3823, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
135 {USB_DEVICE(0x3823, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
136 {USB_DEVICE(0x0123, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
137 {USB_DEVICE(0x0eef, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
138 {USB_DEVICE(0x0eef, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
139 {USB_DEVICE(0x1234, 0x0001), .driver_info
= DEVTYPE_EGALAX
},
140 {USB_DEVICE(0x1234, 0x0002), .driver_info
= DEVTYPE_EGALAX
},
143 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
144 {USB_DEVICE(0x134c, 0x0001), .driver_info
= DEVTYPE_PANJIT
},
145 {USB_DEVICE(0x134c, 0x0002), .driver_info
= DEVTYPE_PANJIT
},
146 {USB_DEVICE(0x134c, 0x0003), .driver_info
= DEVTYPE_PANJIT
},
147 {USB_DEVICE(0x134c, 0x0004), .driver_info
= DEVTYPE_PANJIT
},
150 #ifdef CONFIG_TOUCHSCREEN_USB_3M
151 {USB_DEVICE(0x0596, 0x0001), .driver_info
= DEVTYPE_3M
},
154 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
155 {USB_DEVICE(0x0403, 0xf9e9), .driver_info
= DEVTYPE_ITM
},
158 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
159 {USB_DEVICE(0x1234, 0x5678), .driver_info
= DEVTYPE_ETURBO
},
162 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
163 {USB_DEVICE(0x0637, 0x0001), .driver_info
= DEVTYPE_GUNZE
},
166 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
167 {USB_DEVICE(0x0afa, 0x03e8), .driver_info
= DEVTYPE_DMC_TSC10
},
170 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
171 {USB_DEVICE(0x595a, 0x0001), .driver_info
= DEVTYPE_IRTOUCH
},
172 {USB_DEVICE(0x6615, 0x0001), .driver_info
= DEVTYPE_IRTOUCH
},
175 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
176 {USB_DEVICE(0x1391, 0x1000), .driver_info
= DEVTYPE_IDEALTEK
},
179 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
180 {USB_DEVICE(0x0dfc, 0x0001), .driver_info
= DEVTYPE_GENERAL_TOUCH
},
183 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
184 {USB_DEVICE(0x08f2, 0x007f), .driver_info
= DEVTYPE_GOTOP
},
185 {USB_DEVICE(0x08f2, 0x00ce), .driver_info
= DEVTYPE_GOTOP
},
186 {USB_DEVICE(0x08f2, 0x00f4), .driver_info
= DEVTYPE_GOTOP
},
193 /*****************************************************************************
197 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
203 #define EGALAX_PKT_TYPE_MASK 0xFE
204 #define EGALAX_PKT_TYPE_REPT 0x80
205 #define EGALAX_PKT_TYPE_DIAG 0x0A
207 static int egalax_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
209 if ((pkt
[0] & EGALAX_PKT_TYPE_MASK
) != EGALAX_PKT_TYPE_REPT
)
212 dev
->x
= ((pkt
[3] & 0x0F) << 7) | (pkt
[4] & 0x7F);
213 dev
->y
= ((pkt
[1] & 0x0F) << 7) | (pkt
[2] & 0x7F);
214 dev
->touch
= pkt
[0] & 0x01;
219 static int egalax_get_pkt_len(unsigned char *buf
, int len
)
221 switch (buf
[0] & EGALAX_PKT_TYPE_MASK
) {
222 case EGALAX_PKT_TYPE_REPT
:
225 case EGALAX_PKT_TYPE_DIAG
:
237 /*****************************************************************************
240 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
241 static int panjit_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
243 dev
->x
= ((pkt
[2] & 0x0F) << 8) | pkt
[1];
244 dev
->y
= ((pkt
[4] & 0x0F) << 8) | pkt
[3];
245 dev
->touch
= pkt
[0] & 0x01;
252 /*****************************************************************************
255 #ifdef CONFIG_TOUCHSCREEN_USB_3M
257 #define MTOUCHUSB_ASYNC_REPORT 1
258 #define MTOUCHUSB_RESET 7
259 #define MTOUCHUSB_REQ_CTRLLR_ID 10
261 static int mtouch_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
263 dev
->x
= (pkt
[8] << 8) | pkt
[7];
264 dev
->y
= (pkt
[10] << 8) | pkt
[9];
265 dev
->touch
= (pkt
[2] & 0x40) ? 1 : 0;
270 static int mtouch_init(struct usbtouch_usb
*usbtouch
)
274 ret
= usb_control_msg(usbtouch
->udev
, usb_rcvctrlpipe(usbtouch
->udev
, 0),
276 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
277 1, 0, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
278 dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d",
284 for (i
= 0; i
< 3; i
++) {
285 ret
= usb_control_msg(usbtouch
->udev
, usb_rcvctrlpipe(usbtouch
->udev
, 0),
286 MTOUCHUSB_ASYNC_REPORT
,
287 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
288 1, 1, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
289 dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
302 /*****************************************************************************
305 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
306 static int itm_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
310 * ITM devices report invalid x/y data if not touched.
311 * if the screen was touched before but is not touched any more
312 * report touch as 0 with the last valid x/y data once. then stop
313 * reporting data until touched again.
315 dev
->press
= ((pkt
[2] & 0x01) << 7) | (pkt
[5] & 0x7F);
317 touch
= ~pkt
[7] & 0x20;
327 dev
->x
= ((pkt
[0] & 0x1F) << 7) | (pkt
[3] & 0x7F);
328 dev
->y
= ((pkt
[1] & 0x1F) << 7) | (pkt
[4] & 0x7F);
336 /*****************************************************************************
339 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
343 static int eturbo_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
347 /* packets should start with sync */
348 if (!(pkt
[0] & 0x80))
351 shift
= (6 - (pkt
[0] & 0x03));
352 dev
->x
= ((pkt
[3] << 7) | pkt
[4]) >> shift
;
353 dev
->y
= ((pkt
[1] << 7) | pkt
[2]) >> shift
;
354 dev
->touch
= (pkt
[0] & 0x10) ? 1 : 0;
359 static int eturbo_get_pkt_len(unsigned char *buf
, int len
)
370 /*****************************************************************************
373 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
374 static int gunze_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
376 if (!(pkt
[0] & 0x80) || ((pkt
[1] | pkt
[2] | pkt
[3]) & 0x80))
379 dev
->x
= ((pkt
[0] & 0x1F) << 7) | (pkt
[2] & 0x7F);
380 dev
->y
= ((pkt
[1] & 0x1F) << 7) | (pkt
[3] & 0x7F);
381 dev
->touch
= pkt
[0] & 0x20;
387 /*****************************************************************************
390 * Documentation about the controller and it's protocol can be found at
391 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
392 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
394 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
396 /* supported data rates. currently using 130 */
397 #define TSC10_RATE_POINT 0x50
398 #define TSC10_RATE_30 0x40
399 #define TSC10_RATE_50 0x41
400 #define TSC10_RATE_80 0x42
401 #define TSC10_RATE_100 0x43
402 #define TSC10_RATE_130 0x44
403 #define TSC10_RATE_150 0x45
406 #define TSC10_CMD_RESET 0x55
407 #define TSC10_CMD_RATE 0x05
408 #define TSC10_CMD_DATA1 0x01
410 static int dmc_tsc10_init(struct usbtouch_usb
*usbtouch
)
412 struct usb_device
*dev
= usbtouch
->udev
;
416 buf
= kmalloc(2, GFP_KERNEL
);
420 buf
[0] = buf
[1] = 0xFF;
421 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
423 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
424 0, 0, buf
, 2, USB_CTRL_SET_TIMEOUT
);
427 if (buf
[0] != 0x06 || buf
[1] != 0x00) {
432 /* set coordinate output rate */
433 buf
[0] = buf
[1] = 0xFF;
434 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
436 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
437 TSC10_RATE_150
, 0, buf
, 2, USB_CTRL_SET_TIMEOUT
);
440 if ((buf
[0] != 0x06 || buf
[1] != 0x00) &&
441 (buf
[0] != 0x15 || buf
[1] != 0x01)) {
446 /* start sending data */
447 ret
= usb_control_msg(dev
, usb_rcvctrlpipe (dev
, 0),
449 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
450 0, 0, NULL
, 0, USB_CTRL_SET_TIMEOUT
);
458 static int dmc_tsc10_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
460 dev
->x
= ((pkt
[2] & 0x03) << 8) | pkt
[1];
461 dev
->y
= ((pkt
[4] & 0x03) << 8) | pkt
[3];
462 dev
->touch
= pkt
[0] & 0x01;
469 /*****************************************************************************
472 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
473 static int irtouch_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
475 dev
->x
= (pkt
[3] << 8) | pkt
[2];
476 dev
->y
= (pkt
[5] << 8) | pkt
[4];
477 dev
->touch
= (pkt
[1] & 0x03) ? 1 : 0;
484 /*****************************************************************************
485 * IdealTEK URTC1000 Part
487 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
491 static int idealtek_get_pkt_len(unsigned char *buf
, int len
)
500 static int idealtek_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
502 switch (pkt
[0] & 0x98) {
504 /* touch data in IdealTEK mode */
505 dev
->x
= (pkt
[1] << 5) | (pkt
[2] >> 2);
506 dev
->y
= (pkt
[3] << 5) | (pkt
[4] >> 2);
507 dev
->touch
= (pkt
[0] & 0x40) ? 1 : 0;
511 /* touch data in MT emulation mode */
512 dev
->x
= (pkt
[2] << 5) | (pkt
[1] >> 2);
513 dev
->y
= (pkt
[4] << 5) | (pkt
[3] >> 2);
514 dev
->touch
= (pkt
[0] & 0x40) ? 1 : 0;
523 /*****************************************************************************
526 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
527 static int general_touch_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
529 dev
->x
= ((pkt
[2] & 0x0F) << 8) | pkt
[1] ;
530 dev
->y
= ((pkt
[4] & 0x0F) << 8) | pkt
[3] ;
531 dev
->press
= pkt
[5] & 0xff;
532 dev
->touch
= pkt
[0] & 0x01;
538 /*****************************************************************************
541 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
542 static int gotop_read_data(struct usbtouch_usb
*dev
, unsigned char *pkt
)
544 dev
->x
= ((pkt
[1] & 0x38) << 4) | pkt
[2];
545 dev
->y
= ((pkt
[1] & 0x07) << 7) | pkt
[3];
546 dev
->touch
= pkt
[0] & 0x01;
552 /*****************************************************************************
553 * the different device descriptors
556 static void usbtouch_process_multi(struct usbtouch_usb
*usbtouch
,
557 unsigned char *pkt
, int len
);
560 static struct usbtouch_device_info usbtouch_dev_info
[] = {
561 #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
568 .process_pkt
= usbtouch_process_multi
,
569 .get_pkt_len
= egalax_get_pkt_len
,
570 .read_data
= egalax_read_data
,
574 #ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
581 .read_data
= panjit_read_data
,
585 #ifdef CONFIG_TOUCHSCREEN_USB_3M
592 .read_data
= mtouch_read_data
,
597 #ifdef CONFIG_TOUCHSCREEN_USB_ITM
605 .read_data
= itm_read_data
,
609 #ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
616 .process_pkt
= usbtouch_process_multi
,
617 .get_pkt_len
= eturbo_get_pkt_len
,
618 .read_data
= eturbo_read_data
,
622 #ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
629 .read_data
= gunze_read_data
,
633 #ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
634 [DEVTYPE_DMC_TSC10
] = {
640 .init
= dmc_tsc10_init
,
641 .read_data
= dmc_tsc10_read_data
,
645 #ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
646 [DEVTYPE_IRTOUCH
] = {
652 .read_data
= irtouch_read_data
,
656 #ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
657 [DEVTYPE_IDEALTEK
] = {
663 .process_pkt
= usbtouch_process_multi
,
664 .get_pkt_len
= idealtek_get_pkt_len
,
665 .read_data
= idealtek_read_data
,
669 #ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
670 [DEVTYPE_GENERAL_TOUCH
] = {
676 .read_data
= general_touch_read_data
,
680 #ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
687 .read_data
= gotop_read_data
,
693 /*****************************************************************************
696 static void usbtouch_process_pkt(struct usbtouch_usb
*usbtouch
,
697 unsigned char *pkt
, int len
)
699 struct usbtouch_device_info
*type
= usbtouch
->type
;
701 if (!type
->read_data(usbtouch
, pkt
))
704 input_report_key(usbtouch
->input
, BTN_TOUCH
, usbtouch
->touch
);
707 input_report_abs(usbtouch
->input
, ABS_X
, usbtouch
->y
);
708 input_report_abs(usbtouch
->input
, ABS_Y
, usbtouch
->x
);
710 input_report_abs(usbtouch
->input
, ABS_X
, usbtouch
->x
);
711 input_report_abs(usbtouch
->input
, ABS_Y
, usbtouch
->y
);
714 input_report_abs(usbtouch
->input
, ABS_PRESSURE
, usbtouch
->press
);
715 input_sync(usbtouch
->input
);
720 static void usbtouch_process_multi(struct usbtouch_usb
*usbtouch
,
721 unsigned char *pkt
, int len
)
723 unsigned char *buffer
;
724 int pkt_len
, pos
, buf_len
, tmp
;
727 if (unlikely(usbtouch
->buf_len
)) {
728 /* try to get size */
729 pkt_len
= usbtouch
->type
->get_pkt_len(
730 usbtouch
->buffer
, usbtouch
->buf_len
);
733 if (unlikely(!pkt_len
))
736 /* need to append -pkt_len bytes before able to get size */
737 if (unlikely(pkt_len
< 0)) {
738 int append
= -pkt_len
;
739 if (unlikely(append
> len
))
741 if (usbtouch
->buf_len
+ append
>= usbtouch
->type
->rept_size
)
743 memcpy(usbtouch
->buffer
+ usbtouch
->buf_len
, pkt
, append
);
744 usbtouch
->buf_len
+= append
;
746 pkt_len
= usbtouch
->type
->get_pkt_len(
747 usbtouch
->buffer
, usbtouch
->buf_len
);
753 tmp
= pkt_len
- usbtouch
->buf_len
;
754 if (usbtouch
->buf_len
+ tmp
>= usbtouch
->type
->rept_size
)
756 memcpy(usbtouch
->buffer
+ usbtouch
->buf_len
, pkt
, tmp
);
757 usbtouch_process_pkt(usbtouch
, usbtouch
->buffer
, pkt_len
);
766 /* loop over the received packet, process */
768 while (pos
< buf_len
) {
770 pkt_len
= usbtouch
->type
->get_pkt_len(buffer
+ pos
,
773 /* unknown packet: skip one byte */
774 if (unlikely(!pkt_len
)) {
779 /* full packet: process */
780 if (likely((pkt_len
> 0) && (pkt_len
<= buf_len
- pos
))) {
781 usbtouch_process_pkt(usbtouch
, buffer
+ pos
, pkt_len
);
783 /* incomplete packet: save in buffer */
784 memcpy(usbtouch
->buffer
, buffer
+ pos
, buf_len
- pos
);
785 usbtouch
->buf_len
= buf_len
- pos
;
792 usbtouch
->buf_len
= 0;
798 static void usbtouch_irq(struct urb
*urb
)
800 struct usbtouch_usb
*usbtouch
= urb
->context
;
803 switch (urb
->status
) {
808 /* this urb is timing out */
809 dbg("%s - urb timed out - was the device unplugged?",
815 /* this urb is terminated, clean up */
816 dbg("%s - urb shutting down with status: %d",
817 __func__
, urb
->status
);
820 dbg("%s - nonzero urb status received: %d",
821 __func__
, urb
->status
);
825 usbtouch
->type
->process_pkt(usbtouch
, usbtouch
->data
, urb
->actual_length
);
828 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
830 err("%s - usb_submit_urb failed with result: %d",
834 static int usbtouch_open(struct input_dev
*input
)
836 struct usbtouch_usb
*usbtouch
= input_get_drvdata(input
);
838 usbtouch
->irq
->dev
= usbtouch
->udev
;
840 if (usb_submit_urb(usbtouch
->irq
, GFP_KERNEL
))
846 static void usbtouch_close(struct input_dev
*input
)
848 struct usbtouch_usb
*usbtouch
= input_get_drvdata(input
);
850 usb_kill_urb(usbtouch
->irq
);
854 static void usbtouch_free_buffers(struct usb_device
*udev
,
855 struct usbtouch_usb
*usbtouch
)
857 usb_buffer_free(udev
, usbtouch
->type
->rept_size
,
858 usbtouch
->data
, usbtouch
->data_dma
);
859 kfree(usbtouch
->buffer
);
863 static int usbtouch_probe(struct usb_interface
*intf
,
864 const struct usb_device_id
*id
)
866 struct usbtouch_usb
*usbtouch
;
867 struct input_dev
*input_dev
;
868 struct usb_host_interface
*interface
;
869 struct usb_endpoint_descriptor
*endpoint
;
870 struct usb_device
*udev
= interface_to_usbdev(intf
);
871 struct usbtouch_device_info
*type
;
874 /* some devices are ignored */
875 if (id
->driver_info
== DEVTYPE_IGNORE
)
878 interface
= intf
->cur_altsetting
;
879 endpoint
= &interface
->endpoint
[0].desc
;
881 usbtouch
= kzalloc(sizeof(struct usbtouch_usb
), GFP_KERNEL
);
882 input_dev
= input_allocate_device();
883 if (!usbtouch
|| !input_dev
)
886 type
= &usbtouch_dev_info
[id
->driver_info
];
887 usbtouch
->type
= type
;
888 if (!type
->process_pkt
)
889 type
->process_pkt
= usbtouch_process_pkt
;
891 usbtouch
->data
= usb_buffer_alloc(udev
, type
->rept_size
,
892 GFP_KERNEL
, &usbtouch
->data_dma
);
896 if (type
->get_pkt_len
) {
897 usbtouch
->buffer
= kmalloc(type
->rept_size
, GFP_KERNEL
);
898 if (!usbtouch
->buffer
)
899 goto out_free_buffers
;
902 usbtouch
->irq
= usb_alloc_urb(0, GFP_KERNEL
);
903 if (!usbtouch
->irq
) {
904 dbg("%s - usb_alloc_urb failed: usbtouch->irq", __func__
);
905 goto out_free_buffers
;
908 usbtouch
->udev
= udev
;
909 usbtouch
->input
= input_dev
;
911 if (udev
->manufacturer
)
912 strlcpy(usbtouch
->name
, udev
->manufacturer
, sizeof(usbtouch
->name
));
915 if (udev
->manufacturer
)
916 strlcat(usbtouch
->name
, " ", sizeof(usbtouch
->name
));
917 strlcat(usbtouch
->name
, udev
->product
, sizeof(usbtouch
->name
));
920 if (!strlen(usbtouch
->name
))
921 snprintf(usbtouch
->name
, sizeof(usbtouch
->name
),
922 "USB Touchscreen %04x:%04x",
923 le16_to_cpu(udev
->descriptor
.idVendor
),
924 le16_to_cpu(udev
->descriptor
.idProduct
));
926 usb_make_path(udev
, usbtouch
->phys
, sizeof(usbtouch
->phys
));
927 strlcat(usbtouch
->phys
, "/input0", sizeof(usbtouch
->phys
));
929 input_dev
->name
= usbtouch
->name
;
930 input_dev
->phys
= usbtouch
->phys
;
931 usb_to_input_id(udev
, &input_dev
->id
);
932 input_dev
->dev
.parent
= &intf
->dev
;
934 input_set_drvdata(input_dev
, usbtouch
);
936 input_dev
->open
= usbtouch_open
;
937 input_dev
->close
= usbtouch_close
;
939 input_dev
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_ABS
);
940 input_dev
->keybit
[BIT_WORD(BTN_TOUCH
)] = BIT_MASK(BTN_TOUCH
);
941 input_set_abs_params(input_dev
, ABS_X
, type
->min_xc
, type
->max_xc
, 0, 0);
942 input_set_abs_params(input_dev
, ABS_Y
, type
->min_yc
, type
->max_yc
, 0, 0);
944 input_set_abs_params(input_dev
, ABS_PRESSURE
, type
->min_press
,
945 type
->max_press
, 0, 0);
947 usb_fill_int_urb(usbtouch
->irq
, usbtouch
->udev
,
948 usb_rcvintpipe(usbtouch
->udev
, endpoint
->bEndpointAddress
),
949 usbtouch
->data
, type
->rept_size
,
950 usbtouch_irq
, usbtouch
, endpoint
->bInterval
);
952 usbtouch
->irq
->dev
= usbtouch
->udev
;
953 usbtouch
->irq
->transfer_dma
= usbtouch
->data_dma
;
954 usbtouch
->irq
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
956 /* device specific init */
958 err
= type
->init(usbtouch
);
960 dbg("%s - type->init() failed, err: %d", __func__
, err
);
961 goto out_free_buffers
;
965 err
= input_register_device(usbtouch
->input
);
967 dbg("%s - input_register_device failed, err: %d", __func__
, err
);
968 goto out_free_buffers
;
971 usb_set_intfdata(intf
, usbtouch
);
976 usbtouch_free_buffers(udev
, usbtouch
);
978 input_free_device(input_dev
);
983 static void usbtouch_disconnect(struct usb_interface
*intf
)
985 struct usbtouch_usb
*usbtouch
= usb_get_intfdata(intf
);
987 dbg("%s - called", __func__
);
992 dbg("%s - usbtouch is initialized, cleaning up", __func__
);
993 usb_set_intfdata(intf
, NULL
);
994 usb_kill_urb(usbtouch
->irq
);
995 input_unregister_device(usbtouch
->input
);
996 usb_free_urb(usbtouch
->irq
);
997 usbtouch_free_buffers(interface_to_usbdev(intf
), usbtouch
);
1001 MODULE_DEVICE_TABLE(usb
, usbtouch_devices
);
1003 static struct usb_driver usbtouch_driver
= {
1004 .name
= "usbtouchscreen",
1005 .probe
= usbtouch_probe
,
1006 .disconnect
= usbtouch_disconnect
,
1007 .id_table
= usbtouch_devices
,
1010 static int __init
usbtouch_init(void)
1012 return usb_register(&usbtouch_driver
);
1015 static void __exit
usbtouch_cleanup(void)
1017 usb_deregister(&usbtouch_driver
);
1020 module_init(usbtouch_init
);
1021 module_exit(usbtouch_cleanup
);
1023 MODULE_AUTHOR(DRIVER_AUTHOR
);
1024 MODULE_DESCRIPTION(DRIVER_DESC
);
1025 MODULE_LICENSE("GPL");
1027 MODULE_ALIAS("touchkitusb");
1028 MODULE_ALIAS("itmtouch");
1029 MODULE_ALIAS("mtouchusb");