Commit | Line | Data |
---|---|---|
1d3e2023 DR |
1 | /****************************************************************************** |
2 | * usbtouchscreen.c | |
3 | * Driver for USB Touchscreens, supporting those devices: | |
4 | * - eGalax Touchkit | |
5d892665 DR |
5 | * includes eTurboTouch CT-410/510/700 |
6 | * - 3M/Microtouch EX II series | |
1d3e2023 DR |
7 | * - ITM |
8 | * - PanJit TouchSet | |
5d892665 DR |
9 | * - eTurboTouch |
10 | * - Gunze AHL61 | |
24ced062 | 11 | * - DMC TSC-10/25 |
1d3e2023 DR |
12 | * |
13 | * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch> | |
14 | * Copyright (C) by Todd E. Johnson (mtouchusb.c) | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or | |
17 | * modify it under the terms of the GNU General Public License as | |
18 | * published by the Free Software Foundation; either version 2 of the | |
19 | * License, or (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, but | |
22 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
24 | * General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | * | |
30 | * Driver is based on touchkitusb.c | |
31 | * - ITM parts are from itmtouch.c | |
32 | * - 3M parts are from mtouchusb.c | |
33 | * - PanJit parts are from an unmerged driver by Lanslott Gish | |
24ced062 HS |
34 | * - DMC TSC 10/25 are from Holger Schurig, with ideas from an unmerged |
35 | * driver from Marius Vollmer | |
1d3e2023 DR |
36 | * |
37 | *****************************************************************************/ | |
38 | ||
39 | //#define DEBUG | |
40 | ||
1d3e2023 DR |
41 | #include <linux/kernel.h> |
42 | #include <linux/slab.h> | |
43 | #include <linux/input.h> | |
44 | #include <linux/module.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/usb.h> | |
ae0dadcf | 47 | #include <linux/usb/input.h> |
1d3e2023 DR |
48 | |
49 | ||
24ced062 | 50 | #define DRIVER_VERSION "v0.5" |
1d3e2023 DR |
51 | #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>" |
52 | #define DRIVER_DESC "USB Touchscreen Driver" | |
53 | ||
54 | static int swap_xy; | |
55 | module_param(swap_xy, bool, 0644); | |
56 | MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); | |
57 | ||
58 | /* device specifc data/functions */ | |
59 | struct usbtouch_usb; | |
60 | struct usbtouch_device_info { | |
61 | int min_xc, max_xc; | |
62 | int min_yc, max_yc; | |
63 | int min_press, max_press; | |
64 | int rept_size; | |
65 | int flags; | |
66 | ||
7d12e780 | 67 | void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len); |
5d892665 | 68 | int (*get_pkt_len) (unsigned char *pkt, int len); |
1d3e2023 DR |
69 | int (*read_data) (unsigned char *pkt, int *x, int *y, int *touch, int *press); |
70 | int (*init) (struct usbtouch_usb *usbtouch); | |
71 | }; | |
72 | ||
73 | #define USBTOUCH_FLG_BUFFER 0x01 | |
74 | ||
75 | ||
76 | /* a usbtouch device */ | |
77 | struct usbtouch_usb { | |
78 | unsigned char *data; | |
79 | dma_addr_t data_dma; | |
80 | unsigned char *buffer; | |
81 | int buf_len; | |
82 | struct urb *irq; | |
83 | struct usb_device *udev; | |
84 | struct input_dev *input; | |
85 | struct usbtouch_device_info *type; | |
86 | char name[128]; | |
87 | char phys[64]; | |
88 | }; | |
89 | ||
5d892665 DR |
90 | |
91 | #if defined(CONFIG_USB_TOUCHSCREEN_EGALAX) || defined(CONFIG_USB_TOUCHSCREEN_ETURBO) | |
92 | #define MULTI_PACKET | |
93 | #endif | |
94 | ||
95 | #ifdef MULTI_PACKET | |
96 | static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, | |
5d892665 DR |
97 | unsigned char *pkt, int len); |
98 | #endif | |
1d3e2023 DR |
99 | |
100 | /* device types */ | |
101 | enum { | |
102 | DEVTPYE_DUMMY = -1, | |
103 | DEVTYPE_EGALAX, | |
104 | DEVTYPE_PANJIT, | |
105 | DEVTYPE_3M, | |
106 | DEVTYPE_ITM, | |
5d892665 DR |
107 | DEVTYPE_ETURBO, |
108 | DEVTYPE_GUNZE, | |
24ced062 | 109 | DEVTYPE_DMC_TSC10, |
1d3e2023 DR |
110 | }; |
111 | ||
112 | static struct usb_device_id usbtouch_devices[] = { | |
113 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
114 | {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, | |
5d892665 | 115 | {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
1d3e2023 DR |
116 | {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
117 | {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX}, | |
118 | {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX}, | |
5d892665 DR |
119 | {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
120 | {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX}, | |
1d3e2023 DR |
121 | #endif |
122 | ||
123 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
124 | {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT}, | |
125 | {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT}, | |
126 | {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT}, | |
127 | {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT}, | |
128 | #endif | |
129 | ||
130 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
131 | {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M}, | |
132 | #endif | |
133 | ||
134 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
135 | {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM}, | |
136 | #endif | |
137 | ||
5d892665 DR |
138 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO |
139 | {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO}, | |
140 | #endif | |
141 | ||
142 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
143 | {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE}, | |
144 | #endif | |
145 | ||
24ced062 HS |
146 | #ifdef CONFIG_USB_TOUCHSCREEN_DMC_TSC10 |
147 | {USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10}, | |
148 | #endif | |
149 | ||
1d3e2023 DR |
150 | {} |
151 | }; | |
152 | ||
153 | ||
154 | /***************************************************************************** | |
155 | * eGalax part | |
156 | */ | |
157 | ||
158 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
159 | ||
160 | #define EGALAX_PKT_TYPE_MASK 0xFE | |
161 | #define EGALAX_PKT_TYPE_REPT 0x80 | |
162 | #define EGALAX_PKT_TYPE_DIAG 0x0A | |
163 | ||
164 | static int egalax_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
165 | { | |
166 | if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT) | |
167 | return 0; | |
168 | ||
169 | *x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F); | |
170 | *y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F); | |
171 | *touch = pkt[0] & 0x01; | |
172 | ||
173 | return 1; | |
1d3e2023 DR |
174 | } |
175 | ||
5d892665 | 176 | static int egalax_get_pkt_len(unsigned char *buf, int len) |
1d3e2023 DR |
177 | { |
178 | switch (buf[0] & EGALAX_PKT_TYPE_MASK) { | |
179 | case EGALAX_PKT_TYPE_REPT: | |
180 | return 5; | |
181 | ||
182 | case EGALAX_PKT_TYPE_DIAG: | |
5d892665 DR |
183 | if (len < 2) |
184 | return -1; | |
185 | ||
1d3e2023 DR |
186 | return buf[1] + 2; |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
1d3e2023 DR |
191 | #endif |
192 | ||
193 | ||
194 | /***************************************************************************** | |
195 | * PanJit Part | |
196 | */ | |
197 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
198 | static int panjit_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
199 | { | |
200 | *x = ((pkt[2] & 0x0F) << 8) | pkt[1]; | |
201 | *y = ((pkt[4] & 0x0F) << 8) | pkt[3]; | |
202 | *touch = pkt[0] & 0x01; | |
203 | ||
204 | return 1; | |
205 | } | |
206 | #endif | |
207 | ||
208 | ||
209 | /***************************************************************************** | |
210 | * 3M/Microtouch Part | |
211 | */ | |
212 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
213 | ||
214 | #define MTOUCHUSB_ASYNC_REPORT 1 | |
215 | #define MTOUCHUSB_RESET 7 | |
216 | #define MTOUCHUSB_REQ_CTRLLR_ID 10 | |
217 | ||
218 | static int mtouch_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
219 | { | |
220 | *x = (pkt[8] << 8) | pkt[7]; | |
221 | *y = (pkt[10] << 8) | pkt[9]; | |
222 | *touch = (pkt[2] & 0x40) ? 1 : 0; | |
223 | ||
224 | return 1; | |
225 | } | |
226 | ||
227 | static int mtouch_init(struct usbtouch_usb *usbtouch) | |
228 | { | |
5d892665 | 229 | int ret, i; |
1d3e2023 DR |
230 | |
231 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), | |
232 | MTOUCHUSB_RESET, | |
233 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
234 | 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
235 | dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d", | |
236 | __FUNCTION__, ret); | |
237 | if (ret < 0) | |
238 | return ret; | |
5d892665 DR |
239 | msleep(150); |
240 | ||
241 | for (i = 0; i < 3; i++) { | |
242 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), | |
243 | MTOUCHUSB_ASYNC_REPORT, | |
244 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
245 | 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
246 | dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d", | |
247 | __FUNCTION__, ret); | |
248 | if (ret >= 0) | |
249 | break; | |
250 | if (ret != -EPIPE) | |
251 | return ret; | |
252 | } | |
1d3e2023 DR |
253 | |
254 | return 0; | |
255 | } | |
256 | #endif | |
257 | ||
258 | ||
259 | /***************************************************************************** | |
260 | * ITM Part | |
261 | */ | |
262 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
263 | static int itm_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
264 | { | |
265 | *x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F); | |
09494d5d | 266 | *y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F); |
5dfb5f1d | 267 | *press = ((pkt[2] & 0x01) << 7) | (pkt[5] & 0x7F); |
1d3e2023 DR |
268 | *touch = ~pkt[7] & 0x20; |
269 | ||
5dfb5f1d | 270 | return *touch; |
1d3e2023 DR |
271 | } |
272 | #endif | |
273 | ||
274 | ||
5d892665 DR |
275 | /***************************************************************************** |
276 | * eTurboTouch part | |
277 | */ | |
278 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO | |
279 | static int eturbo_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
280 | { | |
281 | unsigned int shift; | |
282 | ||
283 | /* packets should start with sync */ | |
284 | if (!(pkt[0] & 0x80)) | |
285 | return 0; | |
286 | ||
287 | shift = (6 - (pkt[0] & 0x03)); | |
288 | *x = ((pkt[3] << 7) | pkt[4]) >> shift; | |
289 | *y = ((pkt[1] << 7) | pkt[2]) >> shift; | |
290 | *touch = (pkt[0] & 0x10) ? 1 : 0; | |
291 | ||
292 | return 1; | |
293 | } | |
294 | ||
295 | static int eturbo_get_pkt_len(unsigned char *buf, int len) | |
296 | { | |
297 | if (buf[0] & 0x80) | |
298 | return 5; | |
299 | if (buf[0] == 0x01) | |
300 | return 3; | |
301 | return 0; | |
302 | } | |
303 | #endif | |
304 | ||
305 | ||
306 | /***************************************************************************** | |
307 | * Gunze part | |
308 | */ | |
309 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
310 | static int gunze_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
311 | { | |
312 | if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80)) | |
313 | return 0; | |
314 | ||
315 | *x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F); | |
316 | *y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F); | |
317 | *touch = pkt[0] & 0x20; | |
318 | ||
319 | return 1; | |
320 | } | |
321 | #endif | |
322 | ||
24ced062 HS |
323 | /***************************************************************************** |
324 | * DMC TSC-10/25 Part | |
325 | * | |
326 | * Documentation about the controller and it's protocol can be found at | |
327 | * http://www.dmccoltd.com/files/controler/tsc10usb_pi_e.pdf | |
328 | * http://www.dmccoltd.com/files/controler/tsc25_usb_e.pdf | |
329 | */ | |
330 | #ifdef CONFIG_USB_TOUCHSCREEN_DMC_TSC10 | |
331 | ||
332 | /* supported data rates. currently using 130 */ | |
333 | #define TSC10_RATE_POINT 0x50 | |
334 | #define TSC10_RATE_30 0x40 | |
335 | #define TSC10_RATE_50 0x41 | |
336 | #define TSC10_RATE_80 0x42 | |
337 | #define TSC10_RATE_100 0x43 | |
338 | #define TSC10_RATE_130 0x44 | |
339 | #define TSC10_RATE_150 0x45 | |
340 | ||
341 | /* commands */ | |
342 | #define TSC10_CMD_RESET 0x55 | |
343 | #define TSC10_CMD_RATE 0x05 | |
344 | #define TSC10_CMD_DATA1 0x01 | |
345 | ||
346 | static int dmc_tsc10_init(struct usbtouch_usb *usbtouch) | |
347 | { | |
348 | struct usb_device *dev = usbtouch->udev; | |
349 | int ret; | |
350 | unsigned char buf[2]; | |
351 | ||
352 | /* reset */ | |
353 | buf[0] = buf[1] = 0xFF; | |
354 | ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), | |
355 | TSC10_CMD_RESET, | |
356 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
357 | 0, 0, buf, 2, USB_CTRL_SET_TIMEOUT); | |
358 | if (ret < 0) | |
359 | return ret; | |
360 | if (buf[0] != 0x06 || buf[1] != 0x00) | |
361 | return -ENODEV; | |
362 | ||
363 | /* set coordinate output rate */ | |
364 | buf[0] = buf[1] = 0xFF; | |
365 | ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), | |
366 | TSC10_CMD_RATE, | |
367 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
368 | TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT); | |
369 | if (ret < 0) | |
370 | return ret; | |
371 | if (buf[0] != 0x06 || buf[1] != 0x00) | |
372 | return -ENODEV; | |
373 | ||
374 | /* start sending data */ | |
375 | ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0), | |
376 | TSC10_CMD_DATA1, | |
377 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
378 | 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
379 | if (ret < 0) | |
380 | return ret; | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | ||
386 | static int dmc_tsc10_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
387 | { | |
388 | *x = ((pkt[2] & 0x03) << 8) | pkt[1]; | |
389 | *y = ((pkt[4] & 0x03) << 8) | pkt[3]; | |
390 | *touch = pkt[0] & 0x01; | |
391 | ||
392 | return 1; | |
393 | } | |
394 | #endif | |
395 | ||
396 | ||
1d3e2023 DR |
397 | /***************************************************************************** |
398 | * the different device descriptors | |
399 | */ | |
400 | static struct usbtouch_device_info usbtouch_dev_info[] = { | |
401 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
402 | [DEVTYPE_EGALAX] = { | |
403 | .min_xc = 0x0, | |
404 | .max_xc = 0x07ff, | |
405 | .min_yc = 0x0, | |
406 | .max_yc = 0x07ff, | |
407 | .rept_size = 16, | |
408 | .flags = USBTOUCH_FLG_BUFFER, | |
5d892665 DR |
409 | .process_pkt = usbtouch_process_multi, |
410 | .get_pkt_len = egalax_get_pkt_len, | |
1d3e2023 DR |
411 | .read_data = egalax_read_data, |
412 | }, | |
413 | #endif | |
414 | ||
415 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
416 | [DEVTYPE_PANJIT] = { | |
417 | .min_xc = 0x0, | |
418 | .max_xc = 0x0fff, | |
419 | .min_yc = 0x0, | |
420 | .max_yc = 0x0fff, | |
421 | .rept_size = 8, | |
422 | .read_data = panjit_read_data, | |
423 | }, | |
424 | #endif | |
425 | ||
426 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
427 | [DEVTYPE_3M] = { | |
428 | .min_xc = 0x0, | |
429 | .max_xc = 0x4000, | |
430 | .min_yc = 0x0, | |
431 | .max_yc = 0x4000, | |
432 | .rept_size = 11, | |
433 | .read_data = mtouch_read_data, | |
434 | .init = mtouch_init, | |
435 | }, | |
436 | #endif | |
437 | ||
438 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
439 | [DEVTYPE_ITM] = { | |
440 | .min_xc = 0x0, | |
441 | .max_xc = 0x0fff, | |
442 | .min_yc = 0x0, | |
443 | .max_yc = 0x0fff, | |
444 | .max_press = 0xff, | |
445 | .rept_size = 8, | |
446 | .read_data = itm_read_data, | |
447 | }, | |
448 | #endif | |
5d892665 DR |
449 | |
450 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO | |
451 | [DEVTYPE_ETURBO] = { | |
452 | .min_xc = 0x0, | |
453 | .max_xc = 0x07ff, | |
454 | .min_yc = 0x0, | |
455 | .max_yc = 0x07ff, | |
456 | .rept_size = 8, | |
457 | .flags = USBTOUCH_FLG_BUFFER, | |
458 | .process_pkt = usbtouch_process_multi, | |
459 | .get_pkt_len = eturbo_get_pkt_len, | |
460 | .read_data = eturbo_read_data, | |
461 | }, | |
462 | #endif | |
463 | ||
464 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
465 | [DEVTYPE_GUNZE] = { | |
466 | .min_xc = 0x0, | |
467 | .max_xc = 0x0fff, | |
468 | .min_yc = 0x0, | |
469 | .max_yc = 0x0fff, | |
470 | .rept_size = 4, | |
471 | .read_data = gunze_read_data, | |
472 | }, | |
473 | #endif | |
24ced062 HS |
474 | |
475 | #ifdef CONFIG_USB_TOUCHSCREEN_DMC_TSC10 | |
476 | [DEVTYPE_DMC_TSC10] = { | |
477 | .min_xc = 0x0, | |
478 | .max_xc = 0x03ff, | |
479 | .min_yc = 0x0, | |
480 | .max_yc = 0x03ff, | |
481 | .rept_size = 5, | |
482 | .init = dmc_tsc10_init, | |
483 | .read_data = dmc_tsc10_read_data, | |
484 | }, | |
485 | #endif | |
1d3e2023 DR |
486 | }; |
487 | ||
488 | ||
489 | /***************************************************************************** | |
490 | * Generic Part | |
491 | */ | |
492 | static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch, | |
7d12e780 | 493 | unsigned char *pkt, int len) |
1d3e2023 DR |
494 | { |
495 | int x, y, touch, press; | |
496 | struct usbtouch_device_info *type = usbtouch->type; | |
497 | ||
498 | if (!type->read_data(pkt, &x, &y, &touch, &press)) | |
499 | return; | |
500 | ||
1d3e2023 DR |
501 | input_report_key(usbtouch->input, BTN_TOUCH, touch); |
502 | ||
503 | if (swap_xy) { | |
504 | input_report_abs(usbtouch->input, ABS_X, y); | |
505 | input_report_abs(usbtouch->input, ABS_Y, x); | |
506 | } else { | |
507 | input_report_abs(usbtouch->input, ABS_X, x); | |
508 | input_report_abs(usbtouch->input, ABS_Y, y); | |
509 | } | |
510 | if (type->max_press) | |
511 | input_report_abs(usbtouch->input, ABS_PRESSURE, press); | |
512 | input_sync(usbtouch->input); | |
513 | } | |
514 | ||
515 | ||
5d892665 DR |
516 | #ifdef MULTI_PACKET |
517 | static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, | |
5d892665 DR |
518 | unsigned char *pkt, int len) |
519 | { | |
520 | unsigned char *buffer; | |
521 | int pkt_len, pos, buf_len, tmp; | |
522 | ||
523 | /* process buffer */ | |
524 | if (unlikely(usbtouch->buf_len)) { | |
525 | /* try to get size */ | |
526 | pkt_len = usbtouch->type->get_pkt_len( | |
527 | usbtouch->buffer, usbtouch->buf_len); | |
528 | ||
529 | /* drop? */ | |
530 | if (unlikely(!pkt_len)) | |
531 | goto out_flush_buf; | |
532 | ||
533 | /* need to append -pkt_len bytes before able to get size */ | |
534 | if (unlikely(pkt_len < 0)) { | |
535 | int append = -pkt_len; | |
536 | if (unlikely(append > len)) | |
537 | append = len; | |
538 | if (usbtouch->buf_len + append >= usbtouch->type->rept_size) | |
539 | goto out_flush_buf; | |
540 | memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append); | |
541 | usbtouch->buf_len += append; | |
542 | ||
543 | pkt_len = usbtouch->type->get_pkt_len( | |
544 | usbtouch->buffer, usbtouch->buf_len); | |
545 | if (pkt_len < 0) | |
546 | return; | |
547 | } | |
548 | ||
549 | /* append */ | |
550 | tmp = pkt_len - usbtouch->buf_len; | |
551 | if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size) | |
552 | goto out_flush_buf; | |
553 | memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp); | |
7d12e780 | 554 | usbtouch_process_pkt(usbtouch, usbtouch->buffer, pkt_len); |
5d892665 DR |
555 | |
556 | buffer = pkt + tmp; | |
557 | buf_len = len - tmp; | |
558 | } else { | |
559 | buffer = pkt; | |
560 | buf_len = len; | |
561 | } | |
562 | ||
563 | /* loop over the received packet, process */ | |
564 | pos = 0; | |
565 | while (pos < buf_len) { | |
566 | /* get packet len */ | |
567 | pkt_len = usbtouch->type->get_pkt_len(buffer + pos, len); | |
568 | ||
569 | /* unknown packet: drop everything */ | |
570 | if (unlikely(!pkt_len)) | |
571 | goto out_flush_buf; | |
572 | ||
573 | /* full packet: process */ | |
574 | if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) { | |
7d12e780 | 575 | usbtouch_process_pkt(usbtouch, buffer + pos, pkt_len); |
5d892665 DR |
576 | } else { |
577 | /* incomplete packet: save in buffer */ | |
578 | memcpy(usbtouch->buffer, buffer + pos, buf_len - pos); | |
579 | usbtouch->buf_len = buf_len - pos; | |
580 | return; | |
581 | } | |
582 | pos += pkt_len; | |
583 | } | |
584 | ||
585 | out_flush_buf: | |
586 | usbtouch->buf_len = 0; | |
587 | return; | |
588 | } | |
589 | #endif | |
590 | ||
591 | ||
7d12e780 | 592 | static void usbtouch_irq(struct urb *urb) |
1d3e2023 DR |
593 | { |
594 | struct usbtouch_usb *usbtouch = urb->context; | |
595 | int retval; | |
596 | ||
597 | switch (urb->status) { | |
598 | case 0: | |
599 | /* success */ | |
600 | break; | |
38e2bfc9 | 601 | case -ETIME: |
1d3e2023 DR |
602 | /* this urb is timing out */ |
603 | dbg("%s - urb timed out - was the device unplugged?", | |
604 | __FUNCTION__); | |
605 | return; | |
606 | case -ECONNRESET: | |
607 | case -ENOENT: | |
608 | case -ESHUTDOWN: | |
609 | /* this urb is terminated, clean up */ | |
610 | dbg("%s - urb shutting down with status: %d", | |
611 | __FUNCTION__, urb->status); | |
612 | return; | |
613 | default: | |
614 | dbg("%s - nonzero urb status received: %d", | |
615 | __FUNCTION__, urb->status); | |
616 | goto exit; | |
617 | } | |
618 | ||
7d12e780 | 619 | usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length); |
1d3e2023 DR |
620 | |
621 | exit: | |
622 | retval = usb_submit_urb(urb, GFP_ATOMIC); | |
623 | if (retval) | |
624 | err("%s - usb_submit_urb failed with result: %d", | |
625 | __FUNCTION__, retval); | |
626 | } | |
627 | ||
628 | static int usbtouch_open(struct input_dev *input) | |
629 | { | |
630 | struct usbtouch_usb *usbtouch = input->private; | |
631 | ||
632 | usbtouch->irq->dev = usbtouch->udev; | |
633 | ||
634 | if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) | |
635 | return -EIO; | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
640 | static void usbtouch_close(struct input_dev *input) | |
641 | { | |
642 | struct usbtouch_usb *usbtouch = input->private; | |
643 | ||
644 | usb_kill_urb(usbtouch->irq); | |
645 | } | |
646 | ||
647 | ||
648 | static void usbtouch_free_buffers(struct usb_device *udev, | |
649 | struct usbtouch_usb *usbtouch) | |
650 | { | |
651 | if (usbtouch->data) | |
652 | usb_buffer_free(udev, usbtouch->type->rept_size, | |
653 | usbtouch->data, usbtouch->data_dma); | |
654 | kfree(usbtouch->buffer); | |
655 | } | |
656 | ||
657 | ||
658 | static int usbtouch_probe(struct usb_interface *intf, | |
659 | const struct usb_device_id *id) | |
660 | { | |
661 | struct usbtouch_usb *usbtouch; | |
662 | struct input_dev *input_dev; | |
663 | struct usb_host_interface *interface; | |
664 | struct usb_endpoint_descriptor *endpoint; | |
665 | struct usb_device *udev = interface_to_usbdev(intf); | |
666 | struct usbtouch_device_info *type; | |
5d892665 | 667 | int err = -ENOMEM; |
1d3e2023 DR |
668 | |
669 | interface = intf->cur_altsetting; | |
670 | endpoint = &interface->endpoint[0].desc; | |
671 | ||
672 | usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL); | |
673 | input_dev = input_allocate_device(); | |
674 | if (!usbtouch || !input_dev) | |
675 | goto out_free; | |
676 | ||
677 | type = &usbtouch_dev_info[id->driver_info]; | |
678 | usbtouch->type = type; | |
679 | if (!type->process_pkt) | |
680 | type->process_pkt = usbtouch_process_pkt; | |
681 | ||
682 | usbtouch->data = usb_buffer_alloc(udev, type->rept_size, | |
e94b1766 | 683 | GFP_KERNEL, &usbtouch->data_dma); |
1d3e2023 DR |
684 | if (!usbtouch->data) |
685 | goto out_free; | |
686 | ||
687 | if (type->flags & USBTOUCH_FLG_BUFFER) { | |
688 | usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL); | |
689 | if (!usbtouch->buffer) | |
690 | goto out_free_buffers; | |
691 | } | |
692 | ||
693 | usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL); | |
694 | if (!usbtouch->irq) { | |
695 | dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__); | |
696 | goto out_free_buffers; | |
697 | } | |
698 | ||
699 | usbtouch->udev = udev; | |
700 | usbtouch->input = input_dev; | |
701 | ||
702 | if (udev->manufacturer) | |
703 | strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name)); | |
704 | ||
705 | if (udev->product) { | |
706 | if (udev->manufacturer) | |
707 | strlcat(usbtouch->name, " ", sizeof(usbtouch->name)); | |
708 | strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name)); | |
709 | } | |
710 | ||
711 | if (!strlen(usbtouch->name)) | |
712 | snprintf(usbtouch->name, sizeof(usbtouch->name), | |
713 | "USB Touchscreen %04x:%04x", | |
714 | le16_to_cpu(udev->descriptor.idVendor), | |
715 | le16_to_cpu(udev->descriptor.idProduct)); | |
716 | ||
717 | usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys)); | |
718 | strlcpy(usbtouch->phys, "/input0", sizeof(usbtouch->phys)); | |
719 | ||
720 | input_dev->name = usbtouch->name; | |
721 | input_dev->phys = usbtouch->phys; | |
722 | usb_to_input_id(udev, &input_dev->id); | |
723 | input_dev->cdev.dev = &intf->dev; | |
724 | input_dev->private = usbtouch; | |
725 | input_dev->open = usbtouch_open; | |
726 | input_dev->close = usbtouch_close; | |
727 | ||
728 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); | |
729 | input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); | |
730 | input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0); | |
731 | input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0); | |
732 | if (type->max_press) | |
733 | input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press, | |
734 | type->max_press, 0, 0); | |
735 | ||
736 | usb_fill_int_urb(usbtouch->irq, usbtouch->udev, | |
d8fa59a8 | 737 | usb_rcvintpipe(usbtouch->udev, endpoint->bEndpointAddress), |
1d3e2023 DR |
738 | usbtouch->data, type->rept_size, |
739 | usbtouch_irq, usbtouch, endpoint->bInterval); | |
740 | ||
5d892665 | 741 | usbtouch->irq->dev = usbtouch->udev; |
1d3e2023 DR |
742 | usbtouch->irq->transfer_dma = usbtouch->data_dma; |
743 | usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
744 | ||
745 | /* device specific init */ | |
746 | if (type->init) { | |
747 | err = type->init(usbtouch); | |
748 | if (err) { | |
749 | dbg("%s - type->init() failed, err: %d", __FUNCTION__, err); | |
750 | goto out_free_buffers; | |
751 | } | |
752 | } | |
753 | ||
754 | err = input_register_device(usbtouch->input); | |
755 | if (err) { | |
756 | dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err); | |
757 | goto out_free_buffers; | |
758 | } | |
759 | ||
760 | usb_set_intfdata(intf, usbtouch); | |
761 | ||
762 | return 0; | |
763 | ||
764 | out_free_buffers: | |
765 | usbtouch_free_buffers(udev, usbtouch); | |
766 | out_free: | |
767 | input_free_device(input_dev); | |
768 | kfree(usbtouch); | |
5d892665 | 769 | return err; |
1d3e2023 DR |
770 | } |
771 | ||
772 | static void usbtouch_disconnect(struct usb_interface *intf) | |
773 | { | |
774 | struct usbtouch_usb *usbtouch = usb_get_intfdata(intf); | |
775 | ||
776 | dbg("%s - called", __FUNCTION__); | |
777 | ||
778 | if (!usbtouch) | |
779 | return; | |
780 | ||
781 | dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__); | |
782 | usb_set_intfdata(intf, NULL); | |
783 | usb_kill_urb(usbtouch->irq); | |
784 | input_unregister_device(usbtouch->input); | |
785 | usb_free_urb(usbtouch->irq); | |
786 | usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); | |
787 | kfree(usbtouch); | |
788 | } | |
789 | ||
790 | MODULE_DEVICE_TABLE(usb, usbtouch_devices); | |
791 | ||
792 | static struct usb_driver usbtouch_driver = { | |
793 | .name = "usbtouchscreen", | |
794 | .probe = usbtouch_probe, | |
795 | .disconnect = usbtouch_disconnect, | |
796 | .id_table = usbtouch_devices, | |
797 | }; | |
798 | ||
799 | static int __init usbtouch_init(void) | |
800 | { | |
801 | return usb_register(&usbtouch_driver); | |
802 | } | |
803 | ||
804 | static void __exit usbtouch_cleanup(void) | |
805 | { | |
806 | usb_deregister(&usbtouch_driver); | |
807 | } | |
808 | ||
809 | module_init(usbtouch_init); | |
810 | module_exit(usbtouch_cleanup); | |
811 | ||
812 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
813 | MODULE_DESCRIPTION(DRIVER_DESC); | |
814 | MODULE_LICENSE("GPL"); | |
815 | ||
816 | MODULE_ALIAS("touchkitusb"); | |
817 | MODULE_ALIAS("itmtouch"); | |
818 | MODULE_ALIAS("mtouchusb"); |