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Daniel Ritz1d3e2022006-03-29 22:41:07 +02001/******************************************************************************
2 * usbtouchscreen.c
3 * Driver for USB Touchscreens, supporting those devices:
4 * - eGalax Touchkit
Daniel Ritz5d892662006-07-31 21:43:24 +02005 * includes eTurboTouch CT-410/510/700
6 * - 3M/Microtouch EX II series
Daniel Ritz1d3e2022006-03-29 22:41:07 +02007 * - ITM
8 * - PanJit TouchSet
Daniel Ritz5d892662006-07-31 21:43:24 +02009 * - eTurboTouch
10 * - Gunze AHL61
Holger Schurig24ced062006-11-17 22:50:15 +010011 * - DMC TSC-10/25
Ondrej Zarydf561fc2007-07-03 01:55:03 -040012 * - IRTOUCHSYSTEMS/UNITOP
Ondrej Zarya14a8402007-09-04 23:45:01 -040013 * - IdealTEK URTC1000
Daniel Ritz62aa3662008-01-17 12:01:18 -050014 * - General Touch
Jerrold Jones14e40202007-10-22 00:59:47 -040015 * - GoTop Super_Q2/GogoPen/PenPower tablets
Jim Perssonf7370692009-07-07 22:07:59 -070016 * - JASTEC USB touch controller/DigiTech DTR-02U
Daniel Silverstone2330ed12009-11-23 08:38:16 -080017 * - Zytronic capacitive touchscreen
Ondrej Zary51974242010-02-04 00:17:18 -080018 * - NEXIO/iNexio
Michael Gebetsroitherd2cc817a2011-11-04 23:56:05 -070019 * - Elo TouchSystems 2700 IntelliTouch
Armando Viscontiaa875122012-03-04 10:41:36 -080020 * - EasyTouch USB Dual/Multi touch controller from Data Modul
Daniel Ritz1d3e2022006-03-29 22:41:07 +020021 *
Jerrold Jones14e40202007-10-22 00:59:47 -040022 * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch>
Daniel Ritz1d3e2022006-03-29 22:41:07 +020023 * Copyright (C) by Todd E. Johnson (mtouchusb.c)
24 *
25 * This program is free software; you can redistribute it and/or
26 * modify it under the terms of the GNU General Public License as
27 * published by the Free Software Foundation; either version 2 of the
28 * License, or (at your option) any later version.
29 *
30 * This program is distributed in the hope that it will be useful, but
31 * WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
33 * General Public License for more details.
34 *
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
38 *
39 * Driver is based on touchkitusb.c
40 * - ITM parts are from itmtouch.c
41 * - 3M parts are from mtouchusb.c
42 * - PanJit parts are from an unmerged driver by Lanslott Gish
Holger Schurig24ced062006-11-17 22:50:15 +010043 * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged
44 * driver from Marius Vollmer
Daniel Ritz1d3e2022006-03-29 22:41:07 +020045 *
46 *****************************************************************************/
47
48//#define DEBUG
49
Daniel Ritz1d3e2022006-03-29 22:41:07 +020050#include <linux/kernel.h>
51#include <linux/slab.h>
52#include <linux/input.h>
53#include <linux/module.h>
Daniel Ritz1d3e2022006-03-29 22:41:07 +020054#include <linux/usb.h>
David Brownellae0dadc2006-06-13 10:04:34 -070055#include <linux/usb/input.h>
Daniel Ritzec42d442008-07-03 10:45:37 -040056#include <linux/hid.h>
Daniel Ritz1d3e2022006-03-29 22:41:07 +020057
58
Daniel Ritz62aa3662008-01-17 12:01:18 -050059#define DRIVER_VERSION "v0.6"
Daniel Ritz1d3e2022006-03-29 22:41:07 +020060#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
61#define DRIVER_DESC "USB Touchscreen Driver"
62
Rusty Russell90ab5ee2012-01-13 09:32:20 +103063static bool swap_xy;
Daniel Ritz1d3e2022006-03-29 22:41:07 +020064module_param(swap_xy, bool, 0644);
65MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
66
Rusty Russell90ab5ee2012-01-13 09:32:20 +103067static bool hwcalib_xy;
Dan Streetmanc9cbf3d2009-01-10 23:44:22 -080068module_param(hwcalib_xy, bool, 0644);
69MODULE_PARM_DESC(hwcalib_xy, "If set hw-calibrated X/Y are used if available");
70
Daniel Ritz1d3e2022006-03-29 22:41:07 +020071/* device specifc data/functions */
72struct usbtouch_usb;
73struct usbtouch_device_info {
74 int min_xc, max_xc;
75 int min_yc, max_yc;
76 int min_press, max_press;
77 int rept_size;
Daniel Ritz1d3e2022006-03-29 22:41:07 +020078
Daniel Silverstone2330ed12009-11-23 08:38:16 -080079 /*
80 * Always service the USB devices irq not just when the input device is
81 * open. This is useful when devices have a watchdog which prevents us
82 * from periodically polling the device. Leave this unset unless your
83 * touchscreen device requires it, as it does consume more of the USB
84 * bandwidth.
85 */
86 bool irq_always;
87
David Howells7d12e782006-10-05 14:55:46 +010088 void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
Daniel Ritz62aa3662008-01-17 12:01:18 -050089
90 /*
91 * used to get the packet len. possible return values:
92 * > 0: packet len
93 * = 0: skip one byte
94 * < 0: -return value more bytes needed
95 */
Daniel Ritz5d892662006-07-31 21:43:24 +020096 int (*get_pkt_len) (unsigned char *pkt, int len);
Daniel Ritz62aa3662008-01-17 12:01:18 -050097
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +010098 int (*read_data) (struct usbtouch_usb *usbtouch, unsigned char *pkt);
Oliver Neukuma8aef622010-07-15 09:21:40 -070099 int (*alloc) (struct usbtouch_usb *usbtouch);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200100 int (*init) (struct usbtouch_usb *usbtouch);
Ondrej Zary51974242010-02-04 00:17:18 -0800101 void (*exit) (struct usbtouch_usb *usbtouch);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200102};
103
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200104/* a usbtouch device */
105struct usbtouch_usb {
106 unsigned char *data;
107 dma_addr_t data_dma;
Christian Engelmayer4ef38352013-11-26 18:16:17 -0800108 int data_size;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200109 unsigned char *buffer;
110 int buf_len;
111 struct urb *irq;
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800112 struct usb_interface *interface;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200113 struct input_dev *input;
114 struct usbtouch_device_info *type;
115 char name[128];
116 char phys[64];
Ondrej Zary51974242010-02-04 00:17:18 -0800117 void *priv;
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100118
119 int x, y;
120 int touch, press;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200121};
122
Daniel Ritz5d892662006-07-31 21:43:24 +0200123
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200124/* device types */
125enum {
Daniel Ritzec42d442008-07-03 10:45:37 -0400126 DEVTYPE_IGNORE = -1,
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200127 DEVTYPE_EGALAX,
128 DEVTYPE_PANJIT,
129 DEVTYPE_3M,
130 DEVTYPE_ITM,
Daniel Ritz5d892662006-07-31 21:43:24 +0200131 DEVTYPE_ETURBO,
132 DEVTYPE_GUNZE,
Holger Schurig24ced062006-11-17 22:50:15 +0100133 DEVTYPE_DMC_TSC10,
Ondrej Zarydf561fc2007-07-03 01:55:03 -0400134 DEVTYPE_IRTOUCH,
Lars Poescheldbea4032015-03-24 09:25:10 -0700135 DEVTYPE_IRTOUCH_HIRES,
Ondrej Zarya14a8402007-09-04 23:45:01 -0400136 DEVTYPE_IDEALTEK,
Ilya Frolov9d5657d2007-10-12 14:19:40 -0400137 DEVTYPE_GENERAL_TOUCH,
Jerrold Jones14e40202007-10-22 00:59:47 -0400138 DEVTYPE_GOTOP,
Jim Perssonf7370692009-07-07 22:07:59 -0700139 DEVTYPE_JASTEC,
Florian Echtler9e3b2582009-07-27 17:35:39 -0700140 DEVTYPE_E2I,
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800141 DEVTYPE_ZYTRONIC,
Petr Å tetiar38771bb2010-06-28 09:38:48 -0700142 DEVTYPE_TC45USB,
Ondrej Zary51974242010-02-04 00:17:18 -0800143 DEVTYPE_NEXIO,
Michael Gebetsroitherd2cc817a2011-11-04 23:56:05 -0700144 DEVTYPE_ELO,
Armando Viscontiaa875122012-03-04 10:41:36 -0800145 DEVTYPE_ETOUCH,
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200146};
147
Daniel Ritzec42d442008-07-03 10:45:37 -0400148#define USB_DEVICE_HID_CLASS(vend, prod) \
149 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
150 | USB_DEVICE_ID_MATCH_DEVICE, \
151 .idVendor = (vend), \
152 .idProduct = (prod), \
Forest Bondae2aa3a2013-10-21 12:38:18 -0400153 .bInterfaceClass = USB_INTERFACE_CLASS_HID
Daniel Ritzec42d442008-07-03 10:45:37 -0400154
Márton Németh9cb3ce52010-01-10 23:59:05 -0800155static const struct usb_device_id usbtouch_devices[] = {
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400156#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
Daniel Ritzec42d442008-07-03 10:45:37 -0400157 /* ignore the HID capable devices, handled by usbhid */
158 {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
159 {USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
160
161 /* normal device IDs */
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200162 {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
Daniel Ritz5d892662006-07-31 21:43:24 +0200163 {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200164 {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
165 {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
166 {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
Daniel Ritz5d892662006-07-31 21:43:24 +0200167 {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
168 {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200169#endif
170
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400171#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200172 {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
173 {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
174 {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
175 {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
176#endif
177
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400178#ifdef CONFIG_TOUCHSCREEN_USB_3M
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200179 {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
180#endif
181
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400182#ifdef CONFIG_TOUCHSCREEN_USB_ITM
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200183 {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
Glenn Sommer09910502010-11-22 12:00:05 -0800184 {USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200185#endif
186
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400187#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
Daniel Ritz5d892662006-07-31 21:43:24 +0200188 {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
189#endif
190
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400191#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
Daniel Ritz5d892662006-07-31 21:43:24 +0200192 {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
193#endif
194
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400195#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
Holger Schurig24ced062006-11-17 22:50:15 +0100196 {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
197#endif
198
Ondrej Zarydf561fc2007-07-03 01:55:03 -0400199#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
200 {USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
201 {USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
Lars Poescheldbea4032015-03-24 09:25:10 -0700202 {USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
Ondrej Zarydf561fc2007-07-03 01:55:03 -0400203#endif
204
Ondrej Zarya14a8402007-09-04 23:45:01 -0400205#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
206 {USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
207#endif
208
Ilya Frolov9d5657d2007-10-12 14:19:40 -0400209#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
210 {USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
211#endif
212
Jerrold Jones14e40202007-10-22 00:59:47 -0400213#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
214 {USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
215 {USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
216 {USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
217#endif
218
Jim Perssonf7370692009-07-07 22:07:59 -0700219#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
220 {USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
221#endif
222
Florian Echtler9e3b2582009-07-27 17:35:39 -0700223#ifdef CONFIG_TOUCHSCREEN_USB_E2I
224 {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
225#endif
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800226
227#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
228 {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
229#endif
230
Petr Å tetiar38771bb2010-06-28 09:38:48 -0700231#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
232 /* TC5UH */
233 {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
234 /* TC4UM */
235 {USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
Petr Å tetiardbe14202009-11-29 23:37:07 -0800236#endif
237
Ondrej Zary51974242010-02-04 00:17:18 -0800238#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
239 /* data interface only */
240 {USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
241 .driver_info = DEVTYPE_NEXIO},
242 {USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
243 .driver_info = DEVTYPE_NEXIO},
244#endif
245
Michael Gebetsroitherd2cc817a2011-11-04 23:56:05 -0700246#ifdef CONFIG_TOUCHSCREEN_USB_ELO
247 {USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
248#endif
249
Armando Viscontiaa875122012-03-04 10:41:36 -0800250#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
251 {USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
252#endif
253
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200254 {}
255};
256
257
258/*****************************************************************************
Florian Echtler9e3b2582009-07-27 17:35:39 -0700259 * e2i Part
260 */
261
262#ifdef CONFIG_TOUCHSCREEN_USB_E2I
263static int e2i_init(struct usbtouch_usb *usbtouch)
264{
265 int ret;
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800266 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
Florian Echtler9e3b2582009-07-27 17:35:39 -0700267
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800268 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
Florian Echtler9e3b2582009-07-27 17:35:39 -0700269 0x01, 0x02, 0x0000, 0x0081,
270 NULL, 0, USB_CTRL_SET_TIMEOUT);
271
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700272 dev_dbg(&usbtouch->interface->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -0700273 "%s - usb_control_msg - E2I_RESET - bytes|err: %d\n",
274 __func__, ret);
Florian Echtler9e3b2582009-07-27 17:35:39 -0700275 return ret;
276}
277
278static int e2i_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
279{
280 int tmp = (pkt[0] << 8) | pkt[1];
281 dev->x = (pkt[2] << 8) | pkt[3];
282 dev->y = (pkt[4] << 8) | pkt[5];
283
284 tmp = tmp - 0xA000;
285 dev->touch = (tmp > 0);
286 dev->press = (tmp > 0 ? tmp : 0);
287
288 return 1;
289}
290#endif
291
292
293/*****************************************************************************
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200294 * eGalax part
295 */
296
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400297#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200298
Daniel Ritz62aa3662008-01-17 12:01:18 -0500299#ifndef MULTI_PACKET
300#define MULTI_PACKET
301#endif
302
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200303#define EGALAX_PKT_TYPE_MASK 0xFE
304#define EGALAX_PKT_TYPE_REPT 0x80
305#define EGALAX_PKT_TYPE_DIAG 0x0A
306
Forest Bond037a8332012-09-04 20:27:37 -0700307static int egalax_init(struct usbtouch_usb *usbtouch)
308{
309 int ret, i;
310 unsigned char *buf;
311 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
312
313 /*
314 * An eGalax diagnostic packet kicks the device into using the right
315 * protocol. We send a "check active" packet. The response will be
316 * read later and ignored.
317 */
318
319 buf = kmalloc(3, GFP_KERNEL);
320 if (!buf)
321 return -ENOMEM;
322
323 buf[0] = EGALAX_PKT_TYPE_DIAG;
324 buf[1] = 1; /* length */
325 buf[2] = 'A'; /* command - check active */
326
327 for (i = 0; i < 3; i++) {
328 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
329 0,
330 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
331 0, 0, buf, 3,
332 USB_CTRL_SET_TIMEOUT);
333 if (ret >= 0) {
334 ret = 0;
335 break;
336 }
337 if (ret != -EPIPE)
338 break;
339 }
340
341 kfree(buf);
342
343 return ret;
344}
345
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100346static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200347{
348 if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT)
349 return 0;
350
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100351 dev->x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F);
352 dev->y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F);
353 dev->touch = pkt[0] & 0x01;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200354
355 return 1;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200356}
357
Daniel Ritz5d892662006-07-31 21:43:24 +0200358static int egalax_get_pkt_len(unsigned char *buf, int len)
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200359{
360 switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
361 case EGALAX_PKT_TYPE_REPT:
362 return 5;
363
364 case EGALAX_PKT_TYPE_DIAG:
Daniel Ritz5d892662006-07-31 21:43:24 +0200365 if (len < 2)
366 return -1;
367
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200368 return buf[1] + 2;
369 }
370
371 return 0;
372}
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200373#endif
374
Armando Viscontiaa875122012-03-04 10:41:36 -0800375/*****************************************************************************
376 * EasyTouch part
377 */
378
379#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
380
381#ifndef MULTI_PACKET
382#define MULTI_PACKET
383#endif
384
385#define ETOUCH_PKT_TYPE_MASK 0xFE
386#define ETOUCH_PKT_TYPE_REPT 0x80
387#define ETOUCH_PKT_TYPE_REPT2 0xB0
388#define ETOUCH_PKT_TYPE_DIAG 0x0A
389
390static int etouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
391{
392 if ((pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT &&
393 (pkt[0] & ETOUCH_PKT_TYPE_MASK) != ETOUCH_PKT_TYPE_REPT2)
394 return 0;
395
396 dev->x = ((pkt[1] & 0x1F) << 7) | (pkt[2] & 0x7F);
397 dev->y = ((pkt[3] & 0x1F) << 7) | (pkt[4] & 0x7F);
398 dev->touch = pkt[0] & 0x01;
399
400 return 1;
401}
402
403static int etouch_get_pkt_len(unsigned char *buf, int len)
404{
405 switch (buf[0] & ETOUCH_PKT_TYPE_MASK) {
406 case ETOUCH_PKT_TYPE_REPT:
407 case ETOUCH_PKT_TYPE_REPT2:
408 return 5;
409
410 case ETOUCH_PKT_TYPE_DIAG:
411 if (len < 2)
412 return -1;
413
414 return buf[1] + 2;
415 }
416
417 return 0;
418}
419#endif
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200420
421/*****************************************************************************
422 * PanJit Part
423 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400424#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100425static int panjit_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200426{
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100427 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
428 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
429 dev->touch = pkt[0] & 0x01;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200430
431 return 1;
432}
433#endif
434
435
436/*****************************************************************************
437 * 3M/Microtouch Part
438 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400439#ifdef CONFIG_TOUCHSCREEN_USB_3M
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200440
441#define MTOUCHUSB_ASYNC_REPORT 1
442#define MTOUCHUSB_RESET 7
443#define MTOUCHUSB_REQ_CTRLLR_ID 10
444
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100445static int mtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200446{
Dan Streetmanc9cbf3d2009-01-10 23:44:22 -0800447 if (hwcalib_xy) {
448 dev->x = (pkt[4] << 8) | pkt[3];
449 dev->y = 0xffff - ((pkt[6] << 8) | pkt[5]);
450 } else {
451 dev->x = (pkt[8] << 8) | pkt[7];
452 dev->y = (pkt[10] << 8) | pkt[9];
453 }
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100454 dev->touch = (pkt[2] & 0x40) ? 1 : 0;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200455
456 return 1;
457}
458
459static int mtouch_init(struct usbtouch_usb *usbtouch)
460{
Daniel Ritz5d892662006-07-31 21:43:24 +0200461 int ret, i;
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800462 struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200463
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800464 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200465 MTOUCHUSB_RESET,
466 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
467 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700468 dev_dbg(&usbtouch->interface->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -0700469 "%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d\n",
470 __func__, ret);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200471 if (ret < 0)
472 return ret;
Daniel Ritz5d892662006-07-31 21:43:24 +0200473 msleep(150);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200474
Daniel Ritz5d892662006-07-31 21:43:24 +0200475 for (i = 0; i < 3; i++) {
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800476 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
Daniel Ritz5d892662006-07-31 21:43:24 +0200477 MTOUCHUSB_ASYNC_REPORT,
478 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
479 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700480 dev_dbg(&usbtouch->interface->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -0700481 "%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d\n",
482 __func__, ret);
Daniel Ritz5d892662006-07-31 21:43:24 +0200483 if (ret >= 0)
484 break;
485 if (ret != -EPIPE)
486 return ret;
487 }
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200488
Dan Streetmanc9cbf3d2009-01-10 23:44:22 -0800489 /* Default min/max xy are the raw values, override if using hw-calib */
490 if (hwcalib_xy) {
491 input_set_abs_params(usbtouch->input, ABS_X, 0, 0xffff, 0, 0);
492 input_set_abs_params(usbtouch->input, ABS_Y, 0, 0xffff, 0, 0);
493 }
494
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200495 return 0;
496}
497#endif
498
499
500/*****************************************************************************
501 * ITM Part
502 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400503#ifdef CONFIG_TOUCHSCREEN_USB_ITM
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100504static int itm_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200505{
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100506 int touch;
507 /*
508 * ITM devices report invalid x/y data if not touched.
509 * if the screen was touched before but is not touched any more
510 * report touch as 0 with the last valid x/y data once. then stop
511 * reporting data until touched again.
512 */
513 dev->press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F);
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200514
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100515 touch = ~pkt[7] & 0x20;
516 if (!touch) {
517 if (dev->touch) {
518 dev->touch = 0;
519 return 1;
520 }
521
522 return 0;
523 }
524
525 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F);
526 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F);
527 dev->touch = touch;
528
529 return 1;
Daniel Ritz1d3e2022006-03-29 22:41:07 +0200530}
531#endif
532
533
534/*****************************************************************************
Daniel Ritz5d892662006-07-31 21:43:24 +0200535 * eTurboTouch part
536 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400537#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
Daniel Ritz62aa3662008-01-17 12:01:18 -0500538#ifndef MULTI_PACKET
539#define MULTI_PACKET
540#endif
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100541static int eturbo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz5d892662006-07-31 21:43:24 +0200542{
543 unsigned int shift;
544
545 /* packets should start with sync */
546 if (!(pkt[0] & 0x80))
547 return 0;
548
549 shift = (6 - (pkt[0] & 0x03));
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100550 dev->x = ((pkt[3] << 7) | pkt[4]) >> shift;
551 dev->y = ((pkt[1] << 7) | pkt[2]) >> shift;
552 dev->touch = (pkt[0] & 0x10) ? 1 : 0;
Daniel Ritz5d892662006-07-31 21:43:24 +0200553
554 return 1;
555}
556
557static int eturbo_get_pkt_len(unsigned char *buf, int len)
558{
559 if (buf[0] & 0x80)
560 return 5;
561 if (buf[0] == 0x01)
562 return 3;
563 return 0;
564}
565#endif
566
567
568/*****************************************************************************
569 * Gunze part
570 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400571#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100572static int gunze_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Daniel Ritz5d892662006-07-31 21:43:24 +0200573{
574 if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
575 return 0;
576
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100577 dev->x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
578 dev->y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
579 dev->touch = pkt[0] & 0x20;
Daniel Ritz5d892662006-07-31 21:43:24 +0200580
581 return 1;
582}
583#endif
584
585/*****************************************************************************
Holger Schurig24ced062006-11-17 22:50:15 +0100586 * DMC TSC-10/25 Part
587 *
588 * Documentation about the controller and it's protocol can be found at
589 * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf
590 * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf
591 */
Ondrej Zaryc6f8d702007-06-12 00:33:13 -0400592#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
Holger Schurig24ced062006-11-17 22:50:15 +0100593
594/* supported data rates. currently using 130 */
595#define TSC10_RATE_POINT 0x50
596#define TSC10_RATE_30 0x40
597#define TSC10_RATE_50 0x41
598#define TSC10_RATE_80 0x42
599#define TSC10_RATE_100 0x43
600#define TSC10_RATE_130 0x44
601#define TSC10_RATE_150 0x45
602
603/* commands */
604#define TSC10_CMD_RESET 0x55
605#define TSC10_CMD_RATE 0x05
606#define TSC10_CMD_DATA1 0x01
607
608static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
609{
Ondrej Zaryfea4d142010-02-03 23:46:48 -0800610 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
Oliver Neukum76d057c2008-04-04 15:31:47 -0400611 int ret = -ENOMEM;
612 unsigned char *buf;
Holger Schurig24ced062006-11-17 22:50:15 +0100613
Oliver Neukuma8aef622010-07-15 09:21:40 -0700614 buf = kmalloc(2, GFP_NOIO);
Oliver Neukum76d057c2008-04-04 15:31:47 -0400615 if (!buf)
616 goto err_nobuf;
Holger Schurig24ced062006-11-17 22:50:15 +0100617 /* reset */
618 buf[0] = buf[1] = 0xFF;
619 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
620 TSC10_CMD_RESET,
621 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
622 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
623 if (ret < 0)
Oliver Neukum76d057c2008-04-04 15:31:47 -0400624 goto err_out;
Nuno Lucas2ec6f242008-11-11 16:48:04 -0500625 if (buf[0] != 0x06) {
Oliver Neukum76d057c2008-04-04 15:31:47 -0400626 ret = -ENODEV;
627 goto err_out;
628 }
Holger Schurig24ced062006-11-17 22:50:15 +0100629
630 /* set coordinate output rate */
631 buf[0] = buf[1] = 0xFF;
632 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
633 TSC10_CMD_RATE,
634 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
635 TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
636 if (ret < 0)
Oliver Neukum76d057c2008-04-04 15:31:47 -0400637 goto err_out;
Nuno Lucas2ec6f242008-11-11 16:48:04 -0500638 if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
Oliver Neukum76d057c2008-04-04 15:31:47 -0400639 ret = -ENODEV;
640 goto err_out;
641 }
Holger Schurig24ced062006-11-17 22:50:15 +0100642
643 /* start sending data */
644 ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
645 TSC10_CMD_DATA1,
646 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
647 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
Oliver Neukum76d057c2008-04-04 15:31:47 -0400648err_out:
649 kfree(buf);
650err_nobuf:
651 return ret;
Holger Schurig24ced062006-11-17 22:50:15 +0100652}
653
654
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100655static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Holger Schurig24ced062006-11-17 22:50:15 +0100656{
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +0100657 dev->x = ((pkt[2] & 0x03) << 8) | pkt[1];
658 dev->y = ((pkt[4] & 0x03) << 8) | pkt[3];
659 dev->touch = pkt[0] & 0x01;
Holger Schurig24ced062006-11-17 22:50:15 +0100660
661 return 1;
662}
663#endif
664
665
666/*****************************************************************************
Ondrej Zarydf561fc2007-07-03 01:55:03 -0400667 * IRTOUCH Part
668 */
669#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
670static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
671{
672 dev->x = (pkt[3] << 8) | pkt[2];
673 dev->y = (pkt[5] << 8) | pkt[4];
674 dev->touch = (pkt[1] & 0x03) ? 1 : 0;
675
676 return 1;
677}
678#endif
679
Petr Å tetiardbe14202009-11-29 23:37:07 -0800680/*****************************************************************************
Petr Å tetiar38771bb2010-06-28 09:38:48 -0700681 * ET&T TC5UH/TC4UM part
Petr Å tetiardbe14202009-11-29 23:37:07 -0800682 */
Petr Å tetiar38771bb2010-06-28 09:38:48 -0700683#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
684static int tc45usb_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
Petr Å tetiardbe14202009-11-29 23:37:07 -0800685{
686 dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1];
687 dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3];
688 dev->touch = pkt[0] & 0x01;
689
690 return 1;
691}
692#endif
Ondrej Zarydf561fc2007-07-03 01:55:03 -0400693
694/*****************************************************************************
Ondrej Zarya14a8402007-09-04 23:45:01 -0400695 * IdealTEK URTC1000 Part
696 */
697#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
Daniel Ritz62aa3662008-01-17 12:01:18 -0500698#ifndef MULTI_PACKET
699#define MULTI_PACKET
700#endif
Ondrej Zarya14a8402007-09-04 23:45:01 -0400701static int idealtek_get_pkt_len(unsigned char *buf, int len)
702{
703 if (buf[0] & 0x80)
704 return 5;
705 if (buf[0] == 0x01)
706 return len;
707 return 0;
708}
709
710static int idealtek_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
711{
712 switch (pkt[0] & 0x98) {
713 case 0x88:
714 /* touch data in IdealTEK mode */
715 dev->x = (pkt[1] << 5) | (pkt[2] >> 2);
716 dev->y = (pkt[3] << 5) | (pkt[4] >> 2);
717 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
718 return 1;
719
720 case 0x98:
721 /* touch data in MT emulation mode */
722 dev->x = (pkt[2] << 5) | (pkt[1] >> 2);
723 dev->y = (pkt[4] << 5) | (pkt[3] >> 2);
724 dev->touch = (pkt[0] & 0x40) ? 1 : 0;
725 return 1;
726
727 default:
728 return 0;
729 }
730}
731#endif
732
Ilya Frolov9d5657d2007-10-12 14:19:40 -0400733/*****************************************************************************
734 * General Touch Part
735 */
736#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
737static int general_touch_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
738{
Roy Yineb083ba2010-02-21 22:52:49 -0800739 dev->x = (pkt[2] << 8) | pkt[1];
740 dev->y = (pkt[4] << 8) | pkt[3];
Ilya Frolov9d5657d2007-10-12 14:19:40 -0400741 dev->press = pkt[5] & 0xff;
742 dev->touch = pkt[0] & 0x01;
743
744 return 1;
745}
746#endif
Ondrej Zarya14a8402007-09-04 23:45:01 -0400747
748/*****************************************************************************
Jerrold Jones14e40202007-10-22 00:59:47 -0400749 * GoTop Part
750 */
751#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
752static int gotop_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
753{
754 dev->x = ((pkt[1] & 0x38) << 4) | pkt[2];
755 dev->y = ((pkt[1] & 0x07) << 7) | pkt[3];
756 dev->touch = pkt[0] & 0x01;
Jim Perssonf7370692009-07-07 22:07:59 -0700757
758 return 1;
759}
760#endif
761
762/*****************************************************************************
763 * JASTEC Part
764 */
765#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
766static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
767{
768 dev->x = ((pkt[0] & 0x3f) << 6) | (pkt[2] & 0x3f);
769 dev->y = ((pkt[1] & 0x3f) << 6) | (pkt[3] & 0x3f);
770 dev->touch = (pkt[0] & 0x40) >> 6;
771
Jerrold Jones14e40202007-10-22 00:59:47 -0400772 return 1;
773}
774#endif
775
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800776/*****************************************************************************
777 * Zytronic Part
778 */
779#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
780static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
781{
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700782 struct usb_interface *intf = dev->interface;
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -0700783
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800784 switch (pkt[0]) {
785 case 0x3A: /* command response */
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700786 dev_dbg(&intf->dev, "%s: Command response %d\n", __func__, pkt[1]);
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800787 break;
788
789 case 0xC0: /* down */
790 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
791 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
792 dev->touch = 1;
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700793 dev_dbg(&intf->dev, "%s: down %d,%d\n", __func__, dev->x, dev->y);
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800794 return 1;
795
796 case 0x80: /* up */
797 dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7);
798 dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7);
799 dev->touch = 0;
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700800 dev_dbg(&intf->dev, "%s: up %d,%d\n", __func__, dev->x, dev->y);
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800801 return 1;
802
803 default:
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700804 dev_dbg(&intf->dev, "%s: Unknown return %d\n", __func__, pkt[0]);
Daniel Silverstone2330ed12009-11-23 08:38:16 -0800805 break;
806 }
807
808 return 0;
809}
810#endif
Jerrold Jones14e40202007-10-22 00:59:47 -0400811
812/*****************************************************************************
Ondrej Zary51974242010-02-04 00:17:18 -0800813 * NEXIO Part
814 */
815#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
816
817#define NEXIO_TIMEOUT 5000
818#define NEXIO_BUFSIZE 1024
819#define NEXIO_THRESHOLD 50
820
821struct nexio_priv {
822 struct urb *ack;
823 unsigned char *ack_buf;
824};
825
826struct nexio_touch_packet {
827 u8 flags; /* 0xe1 = touch, 0xe1 = release */
828 __be16 data_len; /* total bytes of touch data */
829 __be16 x_len; /* bytes for X axis */
830 __be16 y_len; /* bytes for Y axis */
831 u8 data[];
832} __attribute__ ((packed));
833
834static unsigned char nexio_ack_pkt[2] = { 0xaa, 0x02 };
835static unsigned char nexio_init_pkt[4] = { 0x82, 0x04, 0x0a, 0x0f };
836
837static void nexio_ack_complete(struct urb *urb)
838{
839}
840
Oliver Neukuma8aef622010-07-15 09:21:40 -0700841static int nexio_alloc(struct usbtouch_usb *usbtouch)
842{
843 struct nexio_priv *priv;
844 int ret = -ENOMEM;
845
846 usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL);
847 if (!usbtouch->priv)
848 goto out_buf;
849
850 priv = usbtouch->priv;
851
852 priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt),
853 GFP_KERNEL);
854 if (!priv->ack_buf)
855 goto err_priv;
856
857 priv->ack = usb_alloc_urb(0, GFP_KERNEL);
858 if (!priv->ack) {
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -0700859 dev_dbg(&usbtouch->interface->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -0700860 "%s - usb_alloc_urb failed: usbtouch->ack\n", __func__);
Oliver Neukuma8aef622010-07-15 09:21:40 -0700861 goto err_ack_buf;
862 }
863
864 return 0;
865
866err_ack_buf:
867 kfree(priv->ack_buf);
868err_priv:
869 kfree(priv);
870out_buf:
871 return ret;
872}
873
Ondrej Zary51974242010-02-04 00:17:18 -0800874static int nexio_init(struct usbtouch_usb *usbtouch)
875{
876 struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
877 struct usb_host_interface *interface = usbtouch->interface->cur_altsetting;
Oliver Neukuma8aef622010-07-15 09:21:40 -0700878 struct nexio_priv *priv = usbtouch->priv;
Ondrej Zary51974242010-02-04 00:17:18 -0800879 int ret = -ENOMEM;
880 int actual_len, i;
881 unsigned char *buf;
882 char *firmware_ver = NULL, *device_name = NULL;
883 int input_ep = 0, output_ep = 0;
884
885 /* find first input and output endpoint */
886 for (i = 0; i < interface->desc.bNumEndpoints; i++) {
887 if (!input_ep &&
888 usb_endpoint_dir_in(&interface->endpoint[i].desc))
889 input_ep = interface->endpoint[i].desc.bEndpointAddress;
890 if (!output_ep &&
891 usb_endpoint_dir_out(&interface->endpoint[i].desc))
892 output_ep = interface->endpoint[i].desc.bEndpointAddress;
893 }
894 if (!input_ep || !output_ep)
895 return -ENXIO;
896
Oliver Neukuma8aef622010-07-15 09:21:40 -0700897 buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
Ondrej Zary51974242010-02-04 00:17:18 -0800898 if (!buf)
899 goto out_buf;
900
901 /* two empty reads */
902 for (i = 0; i < 2; i++) {
903 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
904 buf, NEXIO_BUFSIZE, &actual_len,
905 NEXIO_TIMEOUT);
906 if (ret < 0)
907 goto out_buf;
908 }
909
910 /* send init command */
911 memcpy(buf, nexio_init_pkt, sizeof(nexio_init_pkt));
912 ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, output_ep),
913 buf, sizeof(nexio_init_pkt), &actual_len,
914 NEXIO_TIMEOUT);
915 if (ret < 0)
916 goto out_buf;
917
918 /* read replies */
919 for (i = 0; i < 3; i++) {
920 memset(buf, 0, NEXIO_BUFSIZE);
921 ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, input_ep),
922 buf, NEXIO_BUFSIZE, &actual_len,
923 NEXIO_TIMEOUT);
924 if (ret < 0 || actual_len < 1 || buf[1] != actual_len)
925 continue;
926 switch (buf[0]) {
927 case 0x83: /* firmware version */
928 if (!firmware_ver)
Oliver Neukuma8aef622010-07-15 09:21:40 -0700929 firmware_ver = kstrdup(&buf[2], GFP_NOIO);
Ondrej Zary51974242010-02-04 00:17:18 -0800930 break;
931 case 0x84: /* device name */
932 if (!device_name)
Oliver Neukuma8aef622010-07-15 09:21:40 -0700933 device_name = kstrdup(&buf[2], GFP_NOIO);
Ondrej Zary51974242010-02-04 00:17:18 -0800934 break;
935 }
936 }
937
938 printk(KERN_INFO "Nexio device: %s, firmware version: %s\n",
939 device_name, firmware_ver);
940
941 kfree(firmware_ver);
942 kfree(device_name);
943
Ondrej Zary51974242010-02-04 00:17:18 -0800944 usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
945 priv->ack_buf, sizeof(nexio_ack_pkt),
946 nexio_ack_complete, usbtouch);
947 ret = 0;
Ondrej Zary51974242010-02-04 00:17:18 -0800948
Ondrej Zary51974242010-02-04 00:17:18 -0800949out_buf:
950 kfree(buf);
951 return ret;
952}
953
954static void nexio_exit(struct usbtouch_usb *usbtouch)
955{
956 struct nexio_priv *priv = usbtouch->priv;
957
958 usb_kill_urb(priv->ack);
959 usb_free_urb(priv->ack);
960 kfree(priv->ack_buf);
961 kfree(priv);
962}
963
964static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
965{
Ondrej Zary51974242010-02-04 00:17:18 -0800966 struct nexio_touch_packet *packet = (void *) pkt;
967 struct nexio_priv *priv = usbtouch->priv;
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -0700968 unsigned int data_len = be16_to_cpu(packet->data_len);
969 unsigned int x_len = be16_to_cpu(packet->x_len);
970 unsigned int y_len = be16_to_cpu(packet->y_len);
971 int x, y, begin_x, begin_y, end_x, end_y, w, h, ret;
Ondrej Zary51974242010-02-04 00:17:18 -0800972
973 /* got touch data? */
974 if ((pkt[0] & 0xe0) != 0xe0)
975 return 0;
976
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -0700977 if (data_len > 0xff)
978 data_len -= 0x100;
979 if (x_len > 0xff)
980 x_len -= 0x80;
Ondrej Zary388bbca2010-05-26 23:30:54 -0700981
Ondrej Zary51974242010-02-04 00:17:18 -0800982 /* send ACK */
983 ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
984
985 if (!usbtouch->type->max_xc) {
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -0700986 usbtouch->type->max_xc = 2 * x_len;
987 input_set_abs_params(usbtouch->input, ABS_X,
988 0, usbtouch->type->max_xc, 0, 0);
989 usbtouch->type->max_yc = 2 * y_len;
990 input_set_abs_params(usbtouch->input, ABS_Y,
991 0, usbtouch->type->max_yc, 0, 0);
Ondrej Zary51974242010-02-04 00:17:18 -0800992 }
993 /*
994 * The device reports state of IR sensors on X and Y axes.
995 * Each byte represents "darkness" percentage (0-100) of one element.
996 * 17" touchscreen reports only 64 x 52 bytes so the resolution is low.
997 * This also means that there's a limited multi-touch capability but
998 * it's disabled (and untested) here as there's no X driver for that.
999 */
1000 begin_x = end_x = begin_y = end_y = -1;
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -07001001 for (x = 0; x < x_len; x++) {
Ondrej Zary51974242010-02-04 00:17:18 -08001002 if (begin_x == -1 && packet->data[x] > NEXIO_THRESHOLD) {
1003 begin_x = x;
1004 continue;
1005 }
1006 if (end_x == -1 && begin_x != -1 && packet->data[x] < NEXIO_THRESHOLD) {
1007 end_x = x - 1;
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -07001008 for (y = x_len; y < data_len; y++) {
Ondrej Zary51974242010-02-04 00:17:18 -08001009 if (begin_y == -1 && packet->data[y] > NEXIO_THRESHOLD) {
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -07001010 begin_y = y - x_len;
Ondrej Zary51974242010-02-04 00:17:18 -08001011 continue;
1012 }
1013 if (end_y == -1 &&
1014 begin_y != -1 && packet->data[y] < NEXIO_THRESHOLD) {
Dmitry Torokhov4aa5bbe2010-06-08 01:01:46 -07001015 end_y = y - 1 - x_len;
Ondrej Zary51974242010-02-04 00:17:18 -08001016 w = end_x - begin_x;
1017 h = end_y - begin_y;
1018#if 0
1019 /* multi-touch */
1020 input_report_abs(usbtouch->input,
1021 ABS_MT_TOUCH_MAJOR, max(w,h));
1022 input_report_abs(usbtouch->input,
1023 ABS_MT_TOUCH_MINOR, min(x,h));
1024 input_report_abs(usbtouch->input,
1025 ABS_MT_POSITION_X, 2*begin_x+w);
1026 input_report_abs(usbtouch->input,
1027 ABS_MT_POSITION_Y, 2*begin_y+h);
1028 input_report_abs(usbtouch->input,
1029 ABS_MT_ORIENTATION, w > h);
1030 input_mt_sync(usbtouch->input);
1031#endif
1032 /* single touch */
1033 usbtouch->x = 2 * begin_x + w;
1034 usbtouch->y = 2 * begin_y + h;
1035 usbtouch->touch = packet->flags & 0x01;
1036 begin_y = end_y = -1;
1037 return 1;
1038 }
1039 }
1040 begin_x = end_x = -1;
1041 }
1042
1043 }
1044 return 0;
1045}
1046#endif
1047
1048
1049/*****************************************************************************
Michael Gebetsroitherd2cc817a2011-11-04 23:56:05 -07001050 * ELO part
1051 */
1052
1053#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1054
1055static int elo_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
1056{
1057 dev->x = (pkt[3] << 8) | pkt[2];
1058 dev->y = (pkt[5] << 8) | pkt[4];
1059 dev->touch = pkt[6] > 0;
1060 dev->press = pkt[6];
1061
1062 return 1;
1063}
1064#endif
1065
1066
1067/*****************************************************************************
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001068 * the different device descriptors
1069 */
Daniel Ritz62aa3662008-01-17 12:01:18 -05001070#ifdef MULTI_PACKET
1071static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
1072 unsigned char *pkt, int len);
1073#endif
1074
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001075static struct usbtouch_device_info usbtouch_dev_info[] = {
Michael Gebetsroitherd2cc817a2011-11-04 23:56:05 -07001076#ifdef CONFIG_TOUCHSCREEN_USB_ELO
1077 [DEVTYPE_ELO] = {
1078 .min_xc = 0x0,
1079 .max_xc = 0x0fff,
1080 .min_yc = 0x0,
1081 .max_yc = 0x0fff,
1082 .max_press = 0xff,
1083 .rept_size = 8,
1084 .read_data = elo_read_data,
1085 },
1086#endif
1087
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001088#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001089 [DEVTYPE_EGALAX] = {
1090 .min_xc = 0x0,
1091 .max_xc = 0x07ff,
1092 .min_yc = 0x0,
1093 .max_yc = 0x07ff,
1094 .rept_size = 16,
Daniel Ritz5d892662006-07-31 21:43:24 +02001095 .process_pkt = usbtouch_process_multi,
1096 .get_pkt_len = egalax_get_pkt_len,
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001097 .read_data = egalax_read_data,
Forest Bond037a8332012-09-04 20:27:37 -07001098 .init = egalax_init,
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001099 },
1100#endif
1101
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001102#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001103 [DEVTYPE_PANJIT] = {
1104 .min_xc = 0x0,
1105 .max_xc = 0x0fff,
1106 .min_yc = 0x0,
1107 .max_yc = 0x0fff,
1108 .rept_size = 8,
1109 .read_data = panjit_read_data,
1110 },
1111#endif
1112
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001113#ifdef CONFIG_TOUCHSCREEN_USB_3M
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001114 [DEVTYPE_3M] = {
1115 .min_xc = 0x0,
1116 .max_xc = 0x4000,
1117 .min_yc = 0x0,
1118 .max_yc = 0x4000,
1119 .rept_size = 11,
1120 .read_data = mtouch_read_data,
1121 .init = mtouch_init,
1122 },
1123#endif
1124
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001125#ifdef CONFIG_TOUCHSCREEN_USB_ITM
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001126 [DEVTYPE_ITM] = {
1127 .min_xc = 0x0,
1128 .max_xc = 0x0fff,
1129 .min_yc = 0x0,
1130 .max_yc = 0x0fff,
1131 .max_press = 0xff,
1132 .rept_size = 8,
1133 .read_data = itm_read_data,
1134 },
1135#endif
Daniel Ritz5d892662006-07-31 21:43:24 +02001136
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001137#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
Daniel Ritz5d892662006-07-31 21:43:24 +02001138 [DEVTYPE_ETURBO] = {
1139 .min_xc = 0x0,
1140 .max_xc = 0x07ff,
1141 .min_yc = 0x0,
1142 .max_yc = 0x07ff,
1143 .rept_size = 8,
Daniel Ritz5d892662006-07-31 21:43:24 +02001144 .process_pkt = usbtouch_process_multi,
1145 .get_pkt_len = eturbo_get_pkt_len,
1146 .read_data = eturbo_read_data,
1147 },
1148#endif
1149
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001150#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
Daniel Ritz5d892662006-07-31 21:43:24 +02001151 [DEVTYPE_GUNZE] = {
1152 .min_xc = 0x0,
1153 .max_xc = 0x0fff,
1154 .min_yc = 0x0,
1155 .max_yc = 0x0fff,
1156 .rept_size = 4,
1157 .read_data = gunze_read_data,
1158 },
1159#endif
Holger Schurig24ced062006-11-17 22:50:15 +01001160
Ondrej Zaryc6f8d702007-06-12 00:33:13 -04001161#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
Holger Schurig24ced062006-11-17 22:50:15 +01001162 [DEVTYPE_DMC_TSC10] = {
1163 .min_xc = 0x0,
1164 .max_xc = 0x03ff,
1165 .min_yc = 0x0,
1166 .max_yc = 0x03ff,
1167 .rept_size = 5,
1168 .init = dmc_tsc10_init,
1169 .read_data = dmc_tsc10_read_data,
1170 },
1171#endif
Ondrej Zarydf561fc2007-07-03 01:55:03 -04001172
1173#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
1174 [DEVTYPE_IRTOUCH] = {
1175 .min_xc = 0x0,
1176 .max_xc = 0x0fff,
1177 .min_yc = 0x0,
1178 .max_yc = 0x0fff,
1179 .rept_size = 8,
1180 .read_data = irtouch_read_data,
1181 },
Lars Poescheldbea4032015-03-24 09:25:10 -07001182
1183 [DEVTYPE_IRTOUCH_HIRES] = {
1184 .min_xc = 0x0,
1185 .max_xc = 0x7fff,
1186 .min_yc = 0x0,
1187 .max_yc = 0x7fff,
1188 .rept_size = 8,
1189 .read_data = irtouch_read_data,
1190 },
Ondrej Zarydf561fc2007-07-03 01:55:03 -04001191#endif
Ondrej Zarya14a8402007-09-04 23:45:01 -04001192
1193#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
1194 [DEVTYPE_IDEALTEK] = {
1195 .min_xc = 0x0,
1196 .max_xc = 0x0fff,
1197 .min_yc = 0x0,
1198 .max_yc = 0x0fff,
1199 .rept_size = 8,
Ondrej Zarya14a8402007-09-04 23:45:01 -04001200 .process_pkt = usbtouch_process_multi,
1201 .get_pkt_len = idealtek_get_pkt_len,
1202 .read_data = idealtek_read_data,
1203 },
1204#endif
Ilya Frolov9d5657d2007-10-12 14:19:40 -04001205
1206#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
1207 [DEVTYPE_GENERAL_TOUCH] = {
1208 .min_xc = 0x0,
Roy Yineb083ba2010-02-21 22:52:49 -08001209 .max_xc = 0x7fff,
Ilya Frolov9d5657d2007-10-12 14:19:40 -04001210 .min_yc = 0x0,
Roy Yineb083ba2010-02-21 22:52:49 -08001211 .max_yc = 0x7fff,
Ilya Frolov9d5657d2007-10-12 14:19:40 -04001212 .rept_size = 7,
1213 .read_data = general_touch_read_data,
Jerrold Jones14e40202007-10-22 00:59:47 -04001214 },
Ilya Frolov9d5657d2007-10-12 14:19:40 -04001215#endif
1216
Jerrold Jones14e40202007-10-22 00:59:47 -04001217#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
1218 [DEVTYPE_GOTOP] = {
1219 .min_xc = 0x0,
1220 .max_xc = 0x03ff,
1221 .min_yc = 0x0,
1222 .max_yc = 0x03ff,
1223 .rept_size = 4,
1224 .read_data = gotop_read_data,
1225 },
1226#endif
Jim Perssonf7370692009-07-07 22:07:59 -07001227
1228#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
1229 [DEVTYPE_JASTEC] = {
1230 .min_xc = 0x0,
1231 .max_xc = 0x0fff,
1232 .min_yc = 0x0,
1233 .max_yc = 0x0fff,
1234 .rept_size = 4,
1235 .read_data = jastec_read_data,
1236 },
1237#endif
Florian Echtler9e3b2582009-07-27 17:35:39 -07001238
1239#ifdef CONFIG_TOUCHSCREEN_USB_E2I
1240 [DEVTYPE_E2I] = {
1241 .min_xc = 0x0,
1242 .max_xc = 0x7fff,
1243 .min_yc = 0x0,
1244 .max_yc = 0x7fff,
1245 .rept_size = 6,
1246 .init = e2i_init,
1247 .read_data = e2i_read_data,
1248 },
1249#endif
Daniel Silverstone2330ed12009-11-23 08:38:16 -08001250
1251#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
1252 [DEVTYPE_ZYTRONIC] = {
1253 .min_xc = 0x0,
1254 .max_xc = 0x03ff,
1255 .min_yc = 0x0,
1256 .max_yc = 0x03ff,
1257 .rept_size = 5,
1258 .read_data = zytronic_read_data,
1259 .irq_always = true,
1260 },
1261#endif
Petr Å tetiardbe14202009-11-29 23:37:07 -08001262
Petr Å tetiar38771bb2010-06-28 09:38:48 -07001263#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
1264 [DEVTYPE_TC45USB] = {
Petr Å tetiardbe14202009-11-29 23:37:07 -08001265 .min_xc = 0x0,
1266 .max_xc = 0x0fff,
1267 .min_yc = 0x0,
1268 .max_yc = 0x0fff,
1269 .rept_size = 5,
Petr Å tetiar38771bb2010-06-28 09:38:48 -07001270 .read_data = tc45usb_read_data,
Petr Å tetiardbe14202009-11-29 23:37:07 -08001271 },
1272#endif
Ondrej Zary51974242010-02-04 00:17:18 -08001273
1274#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
1275 [DEVTYPE_NEXIO] = {
Ondrej Zary388bbca2010-05-26 23:30:54 -07001276 .rept_size = 1024,
Ondrej Zary51974242010-02-04 00:17:18 -08001277 .irq_always = true,
1278 .read_data = nexio_read_data,
Oliver Neukuma8aef622010-07-15 09:21:40 -07001279 .alloc = nexio_alloc,
Ondrej Zary51974242010-02-04 00:17:18 -08001280 .init = nexio_init,
1281 .exit = nexio_exit,
1282 },
1283#endif
Armando Viscontiaa875122012-03-04 10:41:36 -08001284#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
1285 [DEVTYPE_ETOUCH] = {
1286 .min_xc = 0x0,
1287 .max_xc = 0x07ff,
1288 .min_yc = 0x0,
1289 .max_yc = 0x07ff,
1290 .rept_size = 16,
1291 .process_pkt = usbtouch_process_multi,
1292 .get_pkt_len = etouch_get_pkt_len,
1293 .read_data = etouch_read_data,
1294 },
1295#endif
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001296};
1297
1298
1299/*****************************************************************************
1300 * Generic Part
1301 */
1302static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
David Howells7d12e782006-10-05 14:55:46 +01001303 unsigned char *pkt, int len)
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001304{
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001305 struct usbtouch_device_info *type = usbtouch->type;
1306
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +01001307 if (!type->read_data(usbtouch, pkt))
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001308 return;
1309
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +01001310 input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001311
1312 if (swap_xy) {
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +01001313 input_report_abs(usbtouch->input, ABS_X, usbtouch->y);
1314 input_report_abs(usbtouch->input, ABS_Y, usbtouch->x);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001315 } else {
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +01001316 input_report_abs(usbtouch->input, ABS_X, usbtouch->x);
1317 input_report_abs(usbtouch->input, ABS_Y, usbtouch->y);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001318 }
1319 if (type->max_press)
Daniel Ritzc9d8c2b2006-12-11 18:17:45 +01001320 input_report_abs(usbtouch->input, ABS_PRESSURE, usbtouch->press);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001321 input_sync(usbtouch->input);
1322}
1323
1324
Daniel Ritz5d892662006-07-31 21:43:24 +02001325#ifdef MULTI_PACKET
1326static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
Daniel Ritz5d892662006-07-31 21:43:24 +02001327 unsigned char *pkt, int len)
1328{
1329 unsigned char *buffer;
1330 int pkt_len, pos, buf_len, tmp;
1331
1332 /* process buffer */
1333 if (unlikely(usbtouch->buf_len)) {
1334 /* try to get size */
1335 pkt_len = usbtouch->type->get_pkt_len(
1336 usbtouch->buffer, usbtouch->buf_len);
1337
1338 /* drop? */
1339 if (unlikely(!pkt_len))
1340 goto out_flush_buf;
1341
1342 /* need to append -pkt_len bytes before able to get size */
1343 if (unlikely(pkt_len < 0)) {
1344 int append = -pkt_len;
1345 if (unlikely(append > len))
1346 append = len;
1347 if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
1348 goto out_flush_buf;
1349 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
1350 usbtouch->buf_len += append;
1351
1352 pkt_len = usbtouch->type->get_pkt_len(
1353 usbtouch->buffer, usbtouch->buf_len);
1354 if (pkt_len < 0)
1355 return;
1356 }
1357
1358 /* append */
1359 tmp = pkt_len - usbtouch->buf_len;
1360 if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
1361 goto out_flush_buf;
1362 memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
David Howells7d12e782006-10-05 14:55:46 +01001363 usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len);
Daniel Ritz5d892662006-07-31 21:43:24 +02001364
1365 buffer = pkt + tmp;
1366 buf_len = len - tmp;
1367 } else {
1368 buffer = pkt;
1369 buf_len = len;
1370 }
1371
1372 /* loop over the received packet, process */
1373 pos = 0;
1374 while (pos < buf_len) {
1375 /* get packet len */
Daniel Ritz62aa3662008-01-17 12:01:18 -05001376 pkt_len = usbtouch->type->get_pkt_len(buffer + pos,
1377 buf_len - pos);
Daniel Ritz5d892662006-07-31 21:43:24 +02001378
Daniel Ritz62aa3662008-01-17 12:01:18 -05001379 /* unknown packet: skip one byte */
1380 if (unlikely(!pkt_len)) {
1381 pos++;
1382 continue;
1383 }
Daniel Ritz5d892662006-07-31 21:43:24 +02001384
1385 /* full packet: process */
1386 if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
David Howells7d12e782006-10-05 14:55:46 +01001387 usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len);
Daniel Ritz5d892662006-07-31 21:43:24 +02001388 } else {
1389 /* incomplete packet: save in buffer */
1390 memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
1391 usbtouch->buf_len = buf_len - pos;
1392 return;
1393 }
1394 pos += pkt_len;
1395 }
1396
1397out_flush_buf:
1398 usbtouch->buf_len = 0;
1399 return;
1400}
1401#endif
1402
1403
David Howells7d12e782006-10-05 14:55:46 +01001404static void usbtouch_irq(struct urb *urb)
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001405{
1406 struct usbtouch_usb *usbtouch = urb->context;
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -07001407 struct device *dev = &usbtouch->interface->dev;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001408 int retval;
1409
1410 switch (urb->status) {
1411 case 0:
1412 /* success */
1413 break;
Pete Zaitcev38e2bfc2006-09-18 22:49:02 -07001414 case -ETIME:
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001415 /* this urb is timing out */
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001416 dev_dbg(dev,
1417 "%s - urb timed out - was the device unplugged?\n",
1418 __func__);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001419 return;
1420 case -ECONNRESET:
1421 case -ENOENT:
1422 case -ESHUTDOWN:
Ondrej Zary51974242010-02-04 00:17:18 -08001423 case -EPIPE:
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001424 /* this urb is terminated, clean up */
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001425 dev_dbg(dev, "%s - urb shutting down with status: %d\n",
1426 __func__, urb->status);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001427 return;
1428 default:
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001429 dev_dbg(dev, "%s - nonzero urb status received: %d\n",
1430 __func__, urb->status);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001431 goto exit;
1432 }
1433
David Howells7d12e782006-10-05 14:55:46 +01001434 usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001435
1436exit:
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001437 usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001438 retval = usb_submit_urb(urb, GFP_ATOMIC);
1439 if (retval)
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -07001440 dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
Greg Kroah-Hartmane27ad0f2012-04-25 14:48:46 -07001441 __func__, retval);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001442}
1443
1444static int usbtouch_open(struct input_dev *input)
1445{
Dmitry Torokhov7791bda2007-04-12 01:34:39 -04001446 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001447 int r;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001448
Ondrej Zaryfea4d142010-02-03 23:46:48 -08001449 usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001450
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001451 r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
1452 if (r < 0)
1453 goto out;
1454
Daniel Silverstone2330ed12009-11-23 08:38:16 -08001455 if (!usbtouch->type->irq_always) {
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001456 if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
1457 r = -EIO;
1458 goto out_put;
1459 }
Daniel Silverstone2330ed12009-11-23 08:38:16 -08001460 }
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001461
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001462 usbtouch->interface->needs_remote_wakeup = 1;
1463out_put:
1464 usb_autopm_put_interface(usbtouch->interface);
1465out:
1466 return r;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001467}
1468
1469static void usbtouch_close(struct input_dev *input)
1470{
Dmitry Torokhov7791bda2007-04-12 01:34:39 -04001471 struct usbtouch_usb *usbtouch = input_get_drvdata(input);
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001472 int r;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001473
Daniel Silverstone2330ed12009-11-23 08:38:16 -08001474 if (!usbtouch->type->irq_always)
1475 usb_kill_urb(usbtouch->irq);
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001476 r = usb_autopm_get_interface(usbtouch->interface);
1477 usbtouch->interface->needs_remote_wakeup = 0;
1478 if (!r)
1479 usb_autopm_put_interface(usbtouch->interface);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001480}
1481
Oliver Neukumed4299e2010-07-15 09:16:39 -07001482static int usbtouch_suspend
1483(struct usb_interface *intf, pm_message_t message)
1484{
1485 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1486
1487 usb_kill_urb(usbtouch->irq);
1488
1489 return 0;
1490}
1491
1492static int usbtouch_resume(struct usb_interface *intf)
1493{
1494 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1495 struct input_dev *input = usbtouch->input;
1496 int result = 0;
1497
1498 mutex_lock(&input->mutex);
1499 if (input->users || usbtouch->type->irq_always)
1500 result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1501 mutex_unlock(&input->mutex);
1502
1503 return result;
1504}
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001505
Oliver Neukuma8aef622010-07-15 09:21:40 -07001506static int usbtouch_reset_resume(struct usb_interface *intf)
1507{
1508 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1509 struct input_dev *input = usbtouch->input;
1510 int err = 0;
1511
1512 /* reinit the device */
1513 if (usbtouch->type->init) {
1514 err = usbtouch->type->init(usbtouch);
1515 if (err) {
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -07001516 dev_dbg(&intf->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001517 "%s - type->init() failed, err: %d\n",
1518 __func__, err);
Oliver Neukuma8aef622010-07-15 09:21:40 -07001519 return err;
1520 }
1521 }
1522
1523 /* restart IO if needed */
1524 mutex_lock(&input->mutex);
1525 if (input->users)
1526 err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
1527 mutex_unlock(&input->mutex);
1528
1529 return err;
1530}
1531
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001532static void usbtouch_free_buffers(struct usb_device *udev,
1533 struct usbtouch_usb *usbtouch)
1534{
Christian Engelmayer4ef38352013-11-26 18:16:17 -08001535 usb_free_coherent(udev, usbtouch->data_size,
Daniel Mack997ea582010-04-12 13:17:25 +02001536 usbtouch->data, usbtouch->data_dma);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001537 kfree(usbtouch->buffer);
1538}
1539
Ondrej Zaryf4a5e352010-02-03 23:54:59 -08001540static struct usb_endpoint_descriptor *
1541usbtouch_get_input_endpoint(struct usb_host_interface *interface)
1542{
1543 int i;
1544
1545 for (i = 0; i < interface->desc.bNumEndpoints; i++)
1546 if (usb_endpoint_dir_in(&interface->endpoint[i].desc))
1547 return &interface->endpoint[i].desc;
1548
1549 return NULL;
1550}
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001551
1552static int usbtouch_probe(struct usb_interface *intf,
1553 const struct usb_device_id *id)
1554{
1555 struct usbtouch_usb *usbtouch;
1556 struct input_dev *input_dev;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001557 struct usb_endpoint_descriptor *endpoint;
1558 struct usb_device *udev = interface_to_usbdev(intf);
1559 struct usbtouch_device_info *type;
Daniel Ritz5d892662006-07-31 21:43:24 +02001560 int err = -ENOMEM;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001561
Daniel Ritzec42d442008-07-03 10:45:37 -04001562 /* some devices are ignored */
1563 if (id->driver_info == DEVTYPE_IGNORE)
1564 return -ENODEV;
1565
Ondrej Zaryf4a5e352010-02-03 23:54:59 -08001566 endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
1567 if (!endpoint)
1568 return -ENXIO;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001569
1570 usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL);
1571 input_dev = input_allocate_device();
1572 if (!usbtouch || !input_dev)
1573 goto out_free;
1574
1575 type = &usbtouch_dev_info[id->driver_info];
1576 usbtouch->type = type;
1577 if (!type->process_pkt)
1578 type->process_pkt = usbtouch_process_pkt;
1579
Christian Engelmayer4ef38352013-11-26 18:16:17 -08001580 usbtouch->data_size = type->rept_size;
1581 if (type->get_pkt_len) {
1582 /*
1583 * When dealing with variable-length packets we should
1584 * not request more than wMaxPacketSize bytes at once
1585 * as we do not know if there is more data coming or
1586 * we filled exactly wMaxPacketSize bytes and there is
1587 * nothing else.
1588 */
1589 usbtouch->data_size = min(usbtouch->data_size,
1590 usb_endpoint_maxp(endpoint));
1591 }
1592
1593 usbtouch->data = usb_alloc_coherent(udev, usbtouch->data_size,
Daniel Mack997ea582010-04-12 13:17:25 +02001594 GFP_KERNEL, &usbtouch->data_dma);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001595 if (!usbtouch->data)
1596 goto out_free;
1597
Daniel Ritz62aa3662008-01-17 12:01:18 -05001598 if (type->get_pkt_len) {
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001599 usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
1600 if (!usbtouch->buffer)
1601 goto out_free_buffers;
1602 }
1603
1604 usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
1605 if (!usbtouch->irq) {
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001606 dev_dbg(&intf->dev,
1607 "%s - usb_alloc_urb failed: usbtouch->irq\n", __func__);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001608 goto out_free_buffers;
1609 }
1610
Ondrej Zaryfea4d142010-02-03 23:46:48 -08001611 usbtouch->interface = intf;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001612 usbtouch->input = input_dev;
1613
1614 if (udev->manufacturer)
1615 strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name));
1616
1617 if (udev->product) {
1618 if (udev->manufacturer)
1619 strlcat(usbtouch->name, " ", sizeof(usbtouch->name));
1620 strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name));
1621 }
1622
1623 if (!strlen(usbtouch->name))
1624 snprintf(usbtouch->name, sizeof(usbtouch->name),
1625 "USB Touchscreen %04x:%04x",
1626 le16_to_cpu(udev->descriptor.idVendor),
1627 le16_to_cpu(udev->descriptor.idProduct));
1628
1629 usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys));
Vladimir Shebordaev7b6dff92007-09-06 21:32:16 -04001630 strlcat(usbtouch->phys, "/input0", sizeof(usbtouch->phys));
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001631
1632 input_dev->name = usbtouch->name;
1633 input_dev->phys = usbtouch->phys;
1634 usb_to_input_id(udev, &input_dev->id);
Dmitry Torokhovc0f82d52007-04-12 01:35:03 -04001635 input_dev->dev.parent = &intf->dev;
Dmitry Torokhov7791bda2007-04-12 01:34:39 -04001636
1637 input_set_drvdata(input_dev, usbtouch);
1638
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001639 input_dev->open = usbtouch_open;
1640 input_dev->close = usbtouch_close;
1641
Jiri Slaby7b19ada2007-10-18 23:40:32 -07001642 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1643 input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001644 input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0);
1645 input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0);
1646 if (type->max_press)
1647 input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press,
1648 type->max_press, 0, 0);
1649
Ondrej Zary51974242010-02-04 00:17:18 -08001650 if (usb_endpoint_type(endpoint) == USB_ENDPOINT_XFER_INT)
1651 usb_fill_int_urb(usbtouch->irq, udev,
Ondrej Zaryfea4d142010-02-03 23:46:48 -08001652 usb_rcvintpipe(udev, endpoint->bEndpointAddress),
Christian Engelmayer4ef38352013-11-26 18:16:17 -08001653 usbtouch->data, usbtouch->data_size,
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001654 usbtouch_irq, usbtouch, endpoint->bInterval);
Ondrej Zary51974242010-02-04 00:17:18 -08001655 else
1656 usb_fill_bulk_urb(usbtouch->irq, udev,
1657 usb_rcvbulkpipe(udev, endpoint->bEndpointAddress),
Christian Engelmayer4ef38352013-11-26 18:16:17 -08001658 usbtouch->data, usbtouch->data_size,
Ondrej Zary51974242010-02-04 00:17:18 -08001659 usbtouch_irq, usbtouch);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001660
Ondrej Zaryfea4d142010-02-03 23:46:48 -08001661 usbtouch->irq->dev = udev;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001662 usbtouch->irq->transfer_dma = usbtouch->data_dma;
1663 usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1664
Oliver Neukuma8aef622010-07-15 09:21:40 -07001665 /* device specific allocations */
1666 if (type->alloc) {
1667 err = type->alloc(usbtouch);
1668 if (err) {
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001669 dev_dbg(&intf->dev,
1670 "%s - type->alloc() failed, err: %d\n",
1671 __func__, err);
Oliver Neukuma8aef622010-07-15 09:21:40 -07001672 goto out_free_urb;
1673 }
1674 }
1675
1676 /* device specific initialisation*/
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001677 if (type->init) {
1678 err = type->init(usbtouch);
1679 if (err) {
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001680 dev_dbg(&intf->dev,
1681 "%s - type->init() failed, err: %d\n",
1682 __func__, err);
Oliver Neukuma8aef622010-07-15 09:21:40 -07001683 goto out_do_exit;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001684 }
1685 }
1686
1687 err = input_register_device(usbtouch->input);
1688 if (err) {
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001689 dev_dbg(&intf->dev,
1690 "%s - input_register_device failed, err: %d\n",
1691 __func__, err);
Ondrej Zary51974242010-02-04 00:17:18 -08001692 goto out_do_exit;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001693 }
1694
1695 usb_set_intfdata(intf, usbtouch);
1696
Ondrej Zary1e87a432010-02-04 00:20:35 -08001697 if (usbtouch->type->irq_always) {
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001698 /* this can't fail */
1699 usb_autopm_get_interface(intf);
Ondrej Zary1e87a432010-02-04 00:20:35 -08001700 err = usb_submit_urb(usbtouch->irq, GFP_KERNEL);
1701 if (err) {
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001702 usb_autopm_put_interface(intf);
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -07001703 dev_err(&intf->dev,
Greg Kroah-Hartmane27ad0f2012-04-25 14:48:46 -07001704 "%s - usb_submit_urb failed with result: %d\n",
1705 __func__, err);
Ondrej Zary1e87a432010-02-04 00:20:35 -08001706 goto out_unregister_input;
1707 }
1708 }
Daniel Silverstone2330ed12009-11-23 08:38:16 -08001709
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001710 return 0;
1711
Ondrej Zary1e87a432010-02-04 00:20:35 -08001712out_unregister_input:
1713 input_unregister_device(input_dev);
1714 input_dev = NULL;
Ondrej Zary51974242010-02-04 00:17:18 -08001715out_do_exit:
1716 if (type->exit)
1717 type->exit(usbtouch);
Ondrej Zary1e87a432010-02-04 00:20:35 -08001718out_free_urb:
1719 usb_free_urb(usbtouch->irq);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001720out_free_buffers:
1721 usbtouch_free_buffers(udev, usbtouch);
1722out_free:
1723 input_free_device(input_dev);
1724 kfree(usbtouch);
Daniel Ritz5d892662006-07-31 21:43:24 +02001725 return err;
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001726}
1727
1728static void usbtouch_disconnect(struct usb_interface *intf)
1729{
1730 struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
1731
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001732 if (!usbtouch)
1733 return;
1734
Greg Kroah-Hartman0a5ebc82012-05-04 15:33:16 -07001735 dev_dbg(&intf->dev,
Greg Kroah-Hartmanb741ab92012-05-01 21:33:23 -07001736 "%s - usbtouch is initialized, cleaning up\n", __func__);
1737
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001738 usb_set_intfdata(intf, NULL);
Oliver Neukum722232bc2009-11-23 08:10:50 -08001739 /* this will stop IO via close */
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001740 input_unregister_device(usbtouch->input);
1741 usb_free_urb(usbtouch->irq);
Ondrej Zary51974242010-02-04 00:17:18 -08001742 if (usbtouch->type->exit)
1743 usbtouch->type->exit(usbtouch);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001744 usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch);
1745 kfree(usbtouch);
1746}
1747
1748MODULE_DEVICE_TABLE(usb, usbtouch_devices);
1749
1750static struct usb_driver usbtouch_driver = {
1751 .name = "usbtouchscreen",
1752 .probe = usbtouch_probe,
1753 .disconnect = usbtouch_disconnect,
Oliver Neukumed4299e2010-07-15 09:16:39 -07001754 .suspend = usbtouch_suspend,
1755 .resume = usbtouch_resume,
Oliver Neukuma8aef622010-07-15 09:21:40 -07001756 .reset_resume = usbtouch_reset_resume,
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001757 .id_table = usbtouch_devices,
Oliver Neukum5d9efc52010-07-15 09:19:51 -07001758 .supports_autosuspend = 1,
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001759};
1760
Greg Kroah-Hartman08642e72011-11-18 09:48:31 -08001761module_usb_driver(usbtouch_driver);
Daniel Ritz1d3e2022006-03-29 22:41:07 +02001762
1763MODULE_AUTHOR(DRIVER_AUTHOR);
1764MODULE_DESCRIPTION(DRIVER_DESC);
1765MODULE_LICENSE("GPL");
1766
1767MODULE_ALIAS("touchkitusb");
1768MODULE_ALIAS("itmtouch");
1769MODULE_ALIAS("mtouchusb");