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 | |
1d3e2023 DR |
11 | * |
12 | * Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch> | |
13 | * Copyright (C) by Todd E. Johnson (mtouchusb.c) | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License as | |
17 | * published by the Free Software Foundation; either version 2 of the | |
18 | * License, or (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, but | |
21 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | * General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | * | |
29 | * Driver is based on touchkitusb.c | |
30 | * - ITM parts are from itmtouch.c | |
31 | * - 3M parts are from mtouchusb.c | |
32 | * - PanJit parts are from an unmerged driver by Lanslott Gish | |
33 | * | |
34 | *****************************************************************************/ | |
35 | ||
36 | //#define DEBUG | |
37 | ||
38 | #include <linux/config.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/input.h> | |
42 | #include <linux/module.h> | |
43 | #include <linux/init.h> | |
44 | #include <linux/usb.h> | |
ae0dadcf | 45 | #include <linux/usb/input.h> |
1d3e2023 DR |
46 | |
47 | ||
5d892665 | 48 | #define DRIVER_VERSION "v0.4" |
1d3e2023 DR |
49 | #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>" |
50 | #define DRIVER_DESC "USB Touchscreen Driver" | |
51 | ||
52 | static int swap_xy; | |
53 | module_param(swap_xy, bool, 0644); | |
54 | MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); | |
55 | ||
56 | /* device specifc data/functions */ | |
57 | struct usbtouch_usb; | |
58 | struct usbtouch_device_info { | |
59 | int min_xc, max_xc; | |
60 | int min_yc, max_yc; | |
61 | int min_press, max_press; | |
62 | int rept_size; | |
63 | int flags; | |
64 | ||
65 | void (*process_pkt) (struct usbtouch_usb *usbtouch, struct pt_regs *regs, unsigned char *pkt, int len); | |
5d892665 | 66 | int (*get_pkt_len) (unsigned char *pkt, int len); |
1d3e2023 DR |
67 | int (*read_data) (unsigned char *pkt, int *x, int *y, int *touch, int *press); |
68 | int (*init) (struct usbtouch_usb *usbtouch); | |
69 | }; | |
70 | ||
71 | #define USBTOUCH_FLG_BUFFER 0x01 | |
72 | ||
73 | ||
74 | /* a usbtouch device */ | |
75 | struct usbtouch_usb { | |
76 | unsigned char *data; | |
77 | dma_addr_t data_dma; | |
78 | unsigned char *buffer; | |
79 | int buf_len; | |
80 | struct urb *irq; | |
81 | struct usb_device *udev; | |
82 | struct input_dev *input; | |
83 | struct usbtouch_device_info *type; | |
84 | char name[128]; | |
85 | char phys[64]; | |
86 | }; | |
87 | ||
5d892665 DR |
88 | |
89 | #if defined(CONFIG_USB_TOUCHSCREEN_EGALAX) || defined(CONFIG_USB_TOUCHSCREEN_ETURBO) | |
90 | #define MULTI_PACKET | |
91 | #endif | |
92 | ||
93 | #ifdef MULTI_PACKET | |
94 | static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, | |
95 | struct pt_regs *regs, | |
96 | unsigned char *pkt, int len); | |
97 | #endif | |
1d3e2023 DR |
98 | |
99 | /* device types */ | |
100 | enum { | |
101 | DEVTPYE_DUMMY = -1, | |
102 | DEVTYPE_EGALAX, | |
103 | DEVTYPE_PANJIT, | |
104 | DEVTYPE_3M, | |
105 | DEVTYPE_ITM, | |
5d892665 DR |
106 | DEVTYPE_ETURBO, |
107 | DEVTYPE_GUNZE, | |
1d3e2023 DR |
108 | }; |
109 | ||
110 | static struct usb_device_id usbtouch_devices[] = { | |
111 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
112 | {USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX}, | |
5d892665 | 113 | {USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX}, |
1d3e2023 DR |
114 | {USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
115 | {USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX}, | |
116 | {USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX}, | |
5d892665 DR |
117 | {USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX}, |
118 | {USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX}, | |
1d3e2023 DR |
119 | #endif |
120 | ||
121 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
122 | {USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT}, | |
123 | {USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT}, | |
124 | {USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT}, | |
125 | {USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT}, | |
126 | #endif | |
127 | ||
128 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
129 | {USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M}, | |
130 | #endif | |
131 | ||
132 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
133 | {USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM}, | |
134 | #endif | |
135 | ||
5d892665 DR |
136 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO |
137 | {USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO}, | |
138 | #endif | |
139 | ||
140 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
141 | {USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE}, | |
142 | #endif | |
143 | ||
1d3e2023 DR |
144 | {} |
145 | }; | |
146 | ||
147 | ||
148 | /***************************************************************************** | |
149 | * eGalax part | |
150 | */ | |
151 | ||
152 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
153 | ||
154 | #define EGALAX_PKT_TYPE_MASK 0xFE | |
155 | #define EGALAX_PKT_TYPE_REPT 0x80 | |
156 | #define EGALAX_PKT_TYPE_DIAG 0x0A | |
157 | ||
158 | static int egalax_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
159 | { | |
160 | if ((pkt[0] & EGALAX_PKT_TYPE_MASK) != EGALAX_PKT_TYPE_REPT) | |
161 | return 0; | |
162 | ||
163 | *x = ((pkt[3] & 0x0F) << 7) | (pkt[4] & 0x7F); | |
164 | *y = ((pkt[1] & 0x0F) << 7) | (pkt[2] & 0x7F); | |
165 | *touch = pkt[0] & 0x01; | |
166 | ||
167 | return 1; | |
1d3e2023 DR |
168 | } |
169 | ||
5d892665 | 170 | static int egalax_get_pkt_len(unsigned char *buf, int len) |
1d3e2023 DR |
171 | { |
172 | switch (buf[0] & EGALAX_PKT_TYPE_MASK) { | |
173 | case EGALAX_PKT_TYPE_REPT: | |
174 | return 5; | |
175 | ||
176 | case EGALAX_PKT_TYPE_DIAG: | |
5d892665 DR |
177 | if (len < 2) |
178 | return -1; | |
179 | ||
1d3e2023 DR |
180 | return buf[1] + 2; |
181 | } | |
182 | ||
183 | return 0; | |
184 | } | |
1d3e2023 DR |
185 | #endif |
186 | ||
187 | ||
188 | /***************************************************************************** | |
189 | * PanJit Part | |
190 | */ | |
191 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
192 | static int panjit_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
193 | { | |
194 | *x = ((pkt[2] & 0x0F) << 8) | pkt[1]; | |
195 | *y = ((pkt[4] & 0x0F) << 8) | pkt[3]; | |
196 | *touch = pkt[0] & 0x01; | |
197 | ||
198 | return 1; | |
199 | } | |
200 | #endif | |
201 | ||
202 | ||
203 | /***************************************************************************** | |
204 | * 3M/Microtouch Part | |
205 | */ | |
206 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
207 | ||
208 | #define MTOUCHUSB_ASYNC_REPORT 1 | |
209 | #define MTOUCHUSB_RESET 7 | |
210 | #define MTOUCHUSB_REQ_CTRLLR_ID 10 | |
211 | ||
212 | static int mtouch_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
213 | { | |
214 | *x = (pkt[8] << 8) | pkt[7]; | |
215 | *y = (pkt[10] << 8) | pkt[9]; | |
216 | *touch = (pkt[2] & 0x40) ? 1 : 0; | |
217 | ||
218 | return 1; | |
219 | } | |
220 | ||
221 | static int mtouch_init(struct usbtouch_usb *usbtouch) | |
222 | { | |
5d892665 | 223 | int ret, i; |
1d3e2023 DR |
224 | |
225 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), | |
226 | MTOUCHUSB_RESET, | |
227 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
228 | 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
229 | dbg("%s - usb_control_msg - MTOUCHUSB_RESET - bytes|err: %d", | |
230 | __FUNCTION__, ret); | |
231 | if (ret < 0) | |
232 | return ret; | |
5d892665 DR |
233 | msleep(150); |
234 | ||
235 | for (i = 0; i < 3; i++) { | |
236 | ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0), | |
237 | MTOUCHUSB_ASYNC_REPORT, | |
238 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
239 | 1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT); | |
240 | dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d", | |
241 | __FUNCTION__, ret); | |
242 | if (ret >= 0) | |
243 | break; | |
244 | if (ret != -EPIPE) | |
245 | return ret; | |
246 | } | |
1d3e2023 DR |
247 | |
248 | return 0; | |
249 | } | |
250 | #endif | |
251 | ||
252 | ||
253 | /***************************************************************************** | |
254 | * ITM Part | |
255 | */ | |
256 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
257 | static int itm_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
258 | { | |
259 | *x = ((pkt[0] & 0x1F) << 7) | (pkt[3] & 0x7F); | |
09494d5d | 260 | *y = ((pkt[1] & 0x1F) << 7) | (pkt[4] & 0x7F); |
1d3e2023 DR |
261 | *press = ((pkt[2] & 0x1F) << 7) | (pkt[5] & 0x7F); |
262 | *touch = ~pkt[7] & 0x20; | |
263 | ||
264 | return 1; | |
265 | } | |
266 | #endif | |
267 | ||
268 | ||
5d892665 DR |
269 | /***************************************************************************** |
270 | * eTurboTouch part | |
271 | */ | |
272 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO | |
273 | static int eturbo_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
274 | { | |
275 | unsigned int shift; | |
276 | ||
277 | /* packets should start with sync */ | |
278 | if (!(pkt[0] & 0x80)) | |
279 | return 0; | |
280 | ||
281 | shift = (6 - (pkt[0] & 0x03)); | |
282 | *x = ((pkt[3] << 7) | pkt[4]) >> shift; | |
283 | *y = ((pkt[1] << 7) | pkt[2]) >> shift; | |
284 | *touch = (pkt[0] & 0x10) ? 1 : 0; | |
285 | ||
286 | return 1; | |
287 | } | |
288 | ||
289 | static int eturbo_get_pkt_len(unsigned char *buf, int len) | |
290 | { | |
291 | if (buf[0] & 0x80) | |
292 | return 5; | |
293 | if (buf[0] == 0x01) | |
294 | return 3; | |
295 | return 0; | |
296 | } | |
297 | #endif | |
298 | ||
299 | ||
300 | /***************************************************************************** | |
301 | * Gunze part | |
302 | */ | |
303 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
304 | static int gunze_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press) | |
305 | { | |
306 | if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80)) | |
307 | return 0; | |
308 | ||
309 | *x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F); | |
310 | *y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F); | |
311 | *touch = pkt[0] & 0x20; | |
312 | ||
313 | return 1; | |
314 | } | |
315 | #endif | |
316 | ||
1d3e2023 DR |
317 | /***************************************************************************** |
318 | * the different device descriptors | |
319 | */ | |
320 | static struct usbtouch_device_info usbtouch_dev_info[] = { | |
321 | #ifdef CONFIG_USB_TOUCHSCREEN_EGALAX | |
322 | [DEVTYPE_EGALAX] = { | |
323 | .min_xc = 0x0, | |
324 | .max_xc = 0x07ff, | |
325 | .min_yc = 0x0, | |
326 | .max_yc = 0x07ff, | |
327 | .rept_size = 16, | |
328 | .flags = USBTOUCH_FLG_BUFFER, | |
5d892665 DR |
329 | .process_pkt = usbtouch_process_multi, |
330 | .get_pkt_len = egalax_get_pkt_len, | |
1d3e2023 DR |
331 | .read_data = egalax_read_data, |
332 | }, | |
333 | #endif | |
334 | ||
335 | #ifdef CONFIG_USB_TOUCHSCREEN_PANJIT | |
336 | [DEVTYPE_PANJIT] = { | |
337 | .min_xc = 0x0, | |
338 | .max_xc = 0x0fff, | |
339 | .min_yc = 0x0, | |
340 | .max_yc = 0x0fff, | |
341 | .rept_size = 8, | |
342 | .read_data = panjit_read_data, | |
343 | }, | |
344 | #endif | |
345 | ||
346 | #ifdef CONFIG_USB_TOUCHSCREEN_3M | |
347 | [DEVTYPE_3M] = { | |
348 | .min_xc = 0x0, | |
349 | .max_xc = 0x4000, | |
350 | .min_yc = 0x0, | |
351 | .max_yc = 0x4000, | |
352 | .rept_size = 11, | |
353 | .read_data = mtouch_read_data, | |
354 | .init = mtouch_init, | |
355 | }, | |
356 | #endif | |
357 | ||
358 | #ifdef CONFIG_USB_TOUCHSCREEN_ITM | |
359 | [DEVTYPE_ITM] = { | |
360 | .min_xc = 0x0, | |
361 | .max_xc = 0x0fff, | |
362 | .min_yc = 0x0, | |
363 | .max_yc = 0x0fff, | |
364 | .max_press = 0xff, | |
365 | .rept_size = 8, | |
366 | .read_data = itm_read_data, | |
367 | }, | |
368 | #endif | |
5d892665 DR |
369 | |
370 | #ifdef CONFIG_USB_TOUCHSCREEN_ETURBO | |
371 | [DEVTYPE_ETURBO] = { | |
372 | .min_xc = 0x0, | |
373 | .max_xc = 0x07ff, | |
374 | .min_yc = 0x0, | |
375 | .max_yc = 0x07ff, | |
376 | .rept_size = 8, | |
377 | .flags = USBTOUCH_FLG_BUFFER, | |
378 | .process_pkt = usbtouch_process_multi, | |
379 | .get_pkt_len = eturbo_get_pkt_len, | |
380 | .read_data = eturbo_read_data, | |
381 | }, | |
382 | #endif | |
383 | ||
384 | #ifdef CONFIG_USB_TOUCHSCREEN_GUNZE | |
385 | [DEVTYPE_GUNZE] = { | |
386 | .min_xc = 0x0, | |
387 | .max_xc = 0x0fff, | |
388 | .min_yc = 0x0, | |
389 | .max_yc = 0x0fff, | |
390 | .rept_size = 4, | |
391 | .read_data = gunze_read_data, | |
392 | }, | |
393 | #endif | |
1d3e2023 DR |
394 | }; |
395 | ||
396 | ||
397 | /***************************************************************************** | |
398 | * Generic Part | |
399 | */ | |
400 | static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch, | |
401 | struct pt_regs *regs, unsigned char *pkt, int len) | |
402 | { | |
403 | int x, y, touch, press; | |
404 | struct usbtouch_device_info *type = usbtouch->type; | |
405 | ||
406 | if (!type->read_data(pkt, &x, &y, &touch, &press)) | |
407 | return; | |
408 | ||
409 | input_regs(usbtouch->input, regs); | |
410 | input_report_key(usbtouch->input, BTN_TOUCH, touch); | |
411 | ||
412 | if (swap_xy) { | |
413 | input_report_abs(usbtouch->input, ABS_X, y); | |
414 | input_report_abs(usbtouch->input, ABS_Y, x); | |
415 | } else { | |
416 | input_report_abs(usbtouch->input, ABS_X, x); | |
417 | input_report_abs(usbtouch->input, ABS_Y, y); | |
418 | } | |
419 | if (type->max_press) | |
420 | input_report_abs(usbtouch->input, ABS_PRESSURE, press); | |
421 | input_sync(usbtouch->input); | |
422 | } | |
423 | ||
424 | ||
5d892665 DR |
425 | #ifdef MULTI_PACKET |
426 | static void usbtouch_process_multi(struct usbtouch_usb *usbtouch, | |
427 | struct pt_regs *regs, | |
428 | unsigned char *pkt, int len) | |
429 | { | |
430 | unsigned char *buffer; | |
431 | int pkt_len, pos, buf_len, tmp; | |
432 | ||
433 | /* process buffer */ | |
434 | if (unlikely(usbtouch->buf_len)) { | |
435 | /* try to get size */ | |
436 | pkt_len = usbtouch->type->get_pkt_len( | |
437 | usbtouch->buffer, usbtouch->buf_len); | |
438 | ||
439 | /* drop? */ | |
440 | if (unlikely(!pkt_len)) | |
441 | goto out_flush_buf; | |
442 | ||
443 | /* need to append -pkt_len bytes before able to get size */ | |
444 | if (unlikely(pkt_len < 0)) { | |
445 | int append = -pkt_len; | |
446 | if (unlikely(append > len)) | |
447 | append = len; | |
448 | if (usbtouch->buf_len + append >= usbtouch->type->rept_size) | |
449 | goto out_flush_buf; | |
450 | memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append); | |
451 | usbtouch->buf_len += append; | |
452 | ||
453 | pkt_len = usbtouch->type->get_pkt_len( | |
454 | usbtouch->buffer, usbtouch->buf_len); | |
455 | if (pkt_len < 0) | |
456 | return; | |
457 | } | |
458 | ||
459 | /* append */ | |
460 | tmp = pkt_len - usbtouch->buf_len; | |
461 | if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size) | |
462 | goto out_flush_buf; | |
463 | memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp); | |
464 | usbtouch_process_pkt(usbtouch, regs, usbtouch->buffer, pkt_len); | |
465 | ||
466 | buffer = pkt + tmp; | |
467 | buf_len = len - tmp; | |
468 | } else { | |
469 | buffer = pkt; | |
470 | buf_len = len; | |
471 | } | |
472 | ||
473 | /* loop over the received packet, process */ | |
474 | pos = 0; | |
475 | while (pos < buf_len) { | |
476 | /* get packet len */ | |
477 | pkt_len = usbtouch->type->get_pkt_len(buffer + pos, len); | |
478 | ||
479 | /* unknown packet: drop everything */ | |
480 | if (unlikely(!pkt_len)) | |
481 | goto out_flush_buf; | |
482 | ||
483 | /* full packet: process */ | |
484 | if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) { | |
485 | usbtouch_process_pkt(usbtouch, regs, buffer + pos, pkt_len); | |
486 | } else { | |
487 | /* incomplete packet: save in buffer */ | |
488 | memcpy(usbtouch->buffer, buffer + pos, buf_len - pos); | |
489 | usbtouch->buf_len = buf_len - pos; | |
490 | return; | |
491 | } | |
492 | pos += pkt_len; | |
493 | } | |
494 | ||
495 | out_flush_buf: | |
496 | usbtouch->buf_len = 0; | |
497 | return; | |
498 | } | |
499 | #endif | |
500 | ||
501 | ||
1d3e2023 DR |
502 | static void usbtouch_irq(struct urb *urb, struct pt_regs *regs) |
503 | { | |
504 | struct usbtouch_usb *usbtouch = urb->context; | |
505 | int retval; | |
506 | ||
507 | switch (urb->status) { | |
508 | case 0: | |
509 | /* success */ | |
510 | break; | |
511 | case -ETIMEDOUT: | |
512 | /* this urb is timing out */ | |
513 | dbg("%s - urb timed out - was the device unplugged?", | |
514 | __FUNCTION__); | |
515 | return; | |
516 | case -ECONNRESET: | |
517 | case -ENOENT: | |
518 | case -ESHUTDOWN: | |
519 | /* this urb is terminated, clean up */ | |
520 | dbg("%s - urb shutting down with status: %d", | |
521 | __FUNCTION__, urb->status); | |
522 | return; | |
523 | default: | |
524 | dbg("%s - nonzero urb status received: %d", | |
525 | __FUNCTION__, urb->status); | |
526 | goto exit; | |
527 | } | |
528 | ||
529 | usbtouch->type->process_pkt(usbtouch, regs, usbtouch->data, urb->actual_length); | |
530 | ||
531 | exit: | |
532 | retval = usb_submit_urb(urb, GFP_ATOMIC); | |
533 | if (retval) | |
534 | err("%s - usb_submit_urb failed with result: %d", | |
535 | __FUNCTION__, retval); | |
536 | } | |
537 | ||
538 | static int usbtouch_open(struct input_dev *input) | |
539 | { | |
540 | struct usbtouch_usb *usbtouch = input->private; | |
541 | ||
542 | usbtouch->irq->dev = usbtouch->udev; | |
543 | ||
544 | if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) | |
545 | return -EIO; | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | static void usbtouch_close(struct input_dev *input) | |
551 | { | |
552 | struct usbtouch_usb *usbtouch = input->private; | |
553 | ||
554 | usb_kill_urb(usbtouch->irq); | |
555 | } | |
556 | ||
557 | ||
558 | static void usbtouch_free_buffers(struct usb_device *udev, | |
559 | struct usbtouch_usb *usbtouch) | |
560 | { | |
561 | if (usbtouch->data) | |
562 | usb_buffer_free(udev, usbtouch->type->rept_size, | |
563 | usbtouch->data, usbtouch->data_dma); | |
564 | kfree(usbtouch->buffer); | |
565 | } | |
566 | ||
567 | ||
568 | static int usbtouch_probe(struct usb_interface *intf, | |
569 | const struct usb_device_id *id) | |
570 | { | |
571 | struct usbtouch_usb *usbtouch; | |
572 | struct input_dev *input_dev; | |
573 | struct usb_host_interface *interface; | |
574 | struct usb_endpoint_descriptor *endpoint; | |
575 | struct usb_device *udev = interface_to_usbdev(intf); | |
576 | struct usbtouch_device_info *type; | |
5d892665 | 577 | int err = -ENOMEM; |
1d3e2023 DR |
578 | |
579 | interface = intf->cur_altsetting; | |
580 | endpoint = &interface->endpoint[0].desc; | |
581 | ||
582 | usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL); | |
583 | input_dev = input_allocate_device(); | |
584 | if (!usbtouch || !input_dev) | |
585 | goto out_free; | |
586 | ||
587 | type = &usbtouch_dev_info[id->driver_info]; | |
588 | usbtouch->type = type; | |
589 | if (!type->process_pkt) | |
590 | type->process_pkt = usbtouch_process_pkt; | |
591 | ||
592 | usbtouch->data = usb_buffer_alloc(udev, type->rept_size, | |
593 | SLAB_KERNEL, &usbtouch->data_dma); | |
594 | if (!usbtouch->data) | |
595 | goto out_free; | |
596 | ||
597 | if (type->flags & USBTOUCH_FLG_BUFFER) { | |
598 | usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL); | |
599 | if (!usbtouch->buffer) | |
600 | goto out_free_buffers; | |
601 | } | |
602 | ||
603 | usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL); | |
604 | if (!usbtouch->irq) { | |
605 | dbg("%s - usb_alloc_urb failed: usbtouch->irq", __FUNCTION__); | |
606 | goto out_free_buffers; | |
607 | } | |
608 | ||
609 | usbtouch->udev = udev; | |
610 | usbtouch->input = input_dev; | |
611 | ||
612 | if (udev->manufacturer) | |
613 | strlcpy(usbtouch->name, udev->manufacturer, sizeof(usbtouch->name)); | |
614 | ||
615 | if (udev->product) { | |
616 | if (udev->manufacturer) | |
617 | strlcat(usbtouch->name, " ", sizeof(usbtouch->name)); | |
618 | strlcat(usbtouch->name, udev->product, sizeof(usbtouch->name)); | |
619 | } | |
620 | ||
621 | if (!strlen(usbtouch->name)) | |
622 | snprintf(usbtouch->name, sizeof(usbtouch->name), | |
623 | "USB Touchscreen %04x:%04x", | |
624 | le16_to_cpu(udev->descriptor.idVendor), | |
625 | le16_to_cpu(udev->descriptor.idProduct)); | |
626 | ||
627 | usb_make_path(udev, usbtouch->phys, sizeof(usbtouch->phys)); | |
628 | strlcpy(usbtouch->phys, "/input0", sizeof(usbtouch->phys)); | |
629 | ||
630 | input_dev->name = usbtouch->name; | |
631 | input_dev->phys = usbtouch->phys; | |
632 | usb_to_input_id(udev, &input_dev->id); | |
633 | input_dev->cdev.dev = &intf->dev; | |
634 | input_dev->private = usbtouch; | |
635 | input_dev->open = usbtouch_open; | |
636 | input_dev->close = usbtouch_close; | |
637 | ||
638 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); | |
639 | input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); | |
640 | input_set_abs_params(input_dev, ABS_X, type->min_xc, type->max_xc, 0, 0); | |
641 | input_set_abs_params(input_dev, ABS_Y, type->min_yc, type->max_yc, 0, 0); | |
642 | if (type->max_press) | |
643 | input_set_abs_params(input_dev, ABS_PRESSURE, type->min_press, | |
644 | type->max_press, 0, 0); | |
645 | ||
646 | usb_fill_int_urb(usbtouch->irq, usbtouch->udev, | |
647 | usb_rcvintpipe(usbtouch->udev, 0x81), | |
648 | usbtouch->data, type->rept_size, | |
649 | usbtouch_irq, usbtouch, endpoint->bInterval); | |
650 | ||
5d892665 | 651 | usbtouch->irq->dev = usbtouch->udev; |
1d3e2023 DR |
652 | usbtouch->irq->transfer_dma = usbtouch->data_dma; |
653 | usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
654 | ||
655 | /* device specific init */ | |
656 | if (type->init) { | |
657 | err = type->init(usbtouch); | |
658 | if (err) { | |
659 | dbg("%s - type->init() failed, err: %d", __FUNCTION__, err); | |
660 | goto out_free_buffers; | |
661 | } | |
662 | } | |
663 | ||
664 | err = input_register_device(usbtouch->input); | |
665 | if (err) { | |
666 | dbg("%s - input_register_device failed, err: %d", __FUNCTION__, err); | |
667 | goto out_free_buffers; | |
668 | } | |
669 | ||
670 | usb_set_intfdata(intf, usbtouch); | |
671 | ||
672 | return 0; | |
673 | ||
674 | out_free_buffers: | |
675 | usbtouch_free_buffers(udev, usbtouch); | |
676 | out_free: | |
677 | input_free_device(input_dev); | |
678 | kfree(usbtouch); | |
5d892665 | 679 | return err; |
1d3e2023 DR |
680 | } |
681 | ||
682 | static void usbtouch_disconnect(struct usb_interface *intf) | |
683 | { | |
684 | struct usbtouch_usb *usbtouch = usb_get_intfdata(intf); | |
685 | ||
686 | dbg("%s - called", __FUNCTION__); | |
687 | ||
688 | if (!usbtouch) | |
689 | return; | |
690 | ||
691 | dbg("%s - usbtouch is initialized, cleaning up", __FUNCTION__); | |
692 | usb_set_intfdata(intf, NULL); | |
693 | usb_kill_urb(usbtouch->irq); | |
694 | input_unregister_device(usbtouch->input); | |
695 | usb_free_urb(usbtouch->irq); | |
696 | usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); | |
697 | kfree(usbtouch); | |
698 | } | |
699 | ||
700 | MODULE_DEVICE_TABLE(usb, usbtouch_devices); | |
701 | ||
702 | static struct usb_driver usbtouch_driver = { | |
703 | .name = "usbtouchscreen", | |
704 | .probe = usbtouch_probe, | |
705 | .disconnect = usbtouch_disconnect, | |
706 | .id_table = usbtouch_devices, | |
707 | }; | |
708 | ||
709 | static int __init usbtouch_init(void) | |
710 | { | |
711 | return usb_register(&usbtouch_driver); | |
712 | } | |
713 | ||
714 | static void __exit usbtouch_cleanup(void) | |
715 | { | |
716 | usb_deregister(&usbtouch_driver); | |
717 | } | |
718 | ||
719 | module_init(usbtouch_init); | |
720 | module_exit(usbtouch_cleanup); | |
721 | ||
722 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
723 | MODULE_DESCRIPTION(DRIVER_DESC); | |
724 | MODULE_LICENSE("GPL"); | |
725 | ||
726 | MODULE_ALIAS("touchkitusb"); | |
727 | MODULE_ALIAS("itmtouch"); | |
728 | MODULE_ALIAS("mtouchusb"); |