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624e now uses its own shortened startstream.
[microdia.git] / microdia-usb.c
blob4e71f9dc95d288a8b4f87dad340b0a59f2b23375
1 /**
2 * @file microdia-usb.c
3 * @author Nicolas VIVIEN
4 * @date 2008-02-01
5 * @version v0.0.0
6 *
7 * @brief Driver for Microdia USB video camera
8 *
9 * @note Copyright (C) Nicolas VIVIEN
10 *
11 * @par Licences
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 */
27
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/version.h>
32 #include <linux/errno.h>
33 #include <linux/slab.h>
34 #include <linux/kref.h>
35 #include <linux/stat.h>
36
37 #include <linux/usb.h>
38 #include <media/v4l2-common.h>
39
40 #include "microdia.h"
41 #include "sn9c20x.h"
42 #include "mt9vx11.h"
43 #include "ov965x.h"
44
45 /**
46 * @var fps
47 * Module parameter to set frame per second
48 */
49 static int fps = 25;
50
51 /**
52 * @var hflip
53 * Module parameter to enable/disable the horizontal flip process
54 */
55 static int hflip = 0;
56
57 /**
58 * @var flip_detect
59 * Module parameter to enable/disable vflip detection
60 */
61 static int flip_detect = 0;
62
63 /**
64 * @var vflip
65 * Module parameter to enable/disable the vertical flip process
66 */
67 static int vflip = 0;
68
69 /**
70 * @var brightness
71 * Module parameter to set the brightness
72 */
73 static int brightness = MICRODIA_PERCENT(50, 0xFFFF);
74
75 /**
76 * @var whiteness
77 * Module parameter to set the whiteness
78 */
79 static int whiteness = MICRODIA_PERCENT(20, 0xFFFF);
80
81 /**
82 * @var contrast
83 * Module parameter to set the contrast
84 */
85 static int contrast = MICRODIA_PERCENT(50, 0xFFFF);
86
87 /**
88 * @var exposure
89 * Module parameter to set the exposure
90 */
91 static int exposure = MICRODIA_PERCENT(20, 0xFFFF);
92
93 /**
94 * @var sharpness
95 * Module parameter to set the sharpness
96 */
97 static int sharpness = MICRODIA_PERCENT(50, 0x3F);
98
99 /**
100 * @var rgb_gain
101 * Module parameter to set the red/green/blue gain
102 */
103 static int rgb_gain = MICRODIA_PERCENT(25, 0x7F) |
104 (MICRODIA_PERCENT(25, 0x7F) << 8) |
105 (MICRODIA_PERCENT(25, 0x7F) << 16);
106
107 /**
108 * @var min_buffers
109 * Module parameter to set the minimum number of image buffers
110 */
111 static int min_buffers = 2;
112
113 /**
114 * @var max_buffers
115 * Module parameter to set the maximum number of image buffers
116 */
117 static int max_buffers = 5;
118
119 /**
120 * @var auto_exposure
121 * Module parameter to set the exposure
122 */
123 static int auto_exposure = 1;
124
125 /**
126 * @var auto_whitebalance
127 * Module parameter to set the exposure
128 */
129 static int auto_whitebalance = 1;
130
131 /**
132 * @var log_level
133 * Module parameter to set the log level
134 */
135 __u8 log_level = 1;
136
137
138 /**
139 * @var microdia_table
140 * Define all the hotplug supported devices by this driver
141 */
142 static struct usb_device_id microdia_table[] = {
143 /* SN9C201 + MI1300 */
144 { USB_DEVICE(USB_0C45_VID, USB_6240_PID) },
145 /* SN9C201 + MI1310 */
146 { USB_DEVICE(USB_0C45_VID, USB_6242_PID) },
147 /* SN9C201 + S5K4AAFX */
148 { USB_DEVICE(USB_0C45_VID, USB_6243_PID) },
149 /* SN9C201 + OV9655 */
150 { USB_DEVICE(USB_0C45_VID, USB_6248_PID) },
151 /* SN9C201 + CX1332 */
152 { USB_DEVICE(USB_0C45_VID, USB_624B_PID) },
153 /* SN9C201 + MI1320 */
154 { USB_DEVICE(USB_0C45_VID, USB_624C_PID) },
155 /* SN9C201 + SOI968 */
156 { USB_DEVICE(USB_0C45_VID, USB_624E_PID) },
157 /* SN9C201 + OV9650 */
158 { USB_DEVICE(USB_0C45_VID, USB_624F_PID) },
159 /* SN9C201 + OV9650 */
160 { USB_DEVICE(USB_0C45_VID, USB_6253_PID) },
161 /* SN9C201 + OV7670ISP */
162 { USB_DEVICE(USB_0C45_VID, USB_6260_PID) },
163 /* SN9C201 + OM6802 */
164 { USB_DEVICE(USB_0C45_VID, USB_6262_PID) },
165 /* SN9C201 + MI0360/MT9V111 */
166 { USB_DEVICE(USB_0C45_VID, USB_6270_PID) },
167 /* SN9C201 + S5K53BEB */
168 { USB_DEVICE(USB_0C45_VID, USB_627A_PID) },
169 /* SN9C201 + OV7660 */
170 { USB_DEVICE(USB_0C45_VID, USB_627B_PID) },
171 /* SN9C201 + HV7131R */
172 { USB_DEVICE(USB_0C45_VID, USB_627C_PID) },
173 /* EEPROM */
174 { USB_DEVICE(USB_0C45_VID, USB_627F_PID) },
175 /* SN9C202 + MI1300 */
176 { USB_DEVICE(USB_0C45_VID, USB_6280_PID) },
177 /* SN9C202 + MI1310 */
178 { USB_DEVICE(USB_0C45_VID, USB_6282_PID) },
179 /* SN9C202 + S5K4AAFX */
180 { USB_DEVICE(USB_0C45_VID, USB_6283_PID) },
181 /* SN9C202 + OV9655 */
182 { USB_DEVICE(USB_0C45_VID, USB_6288_PID) },
183 /* SN9C202 + ICM107 */
184 { USB_DEVICE(USB_0C45_VID, USB_628A_PID) },
185 /* SN9C202 + CX1332 */
186 { USB_DEVICE(USB_0C45_VID, USB_628B_PID) },
187 /* SN9C202 + MI1320 */
188 { USB_DEVICE(USB_0C45_VID, USB_628C_PID) },
189 /* SN9C202 + SOI968 */
190 { USB_DEVICE(USB_0C45_VID, USB_628E_PID) },
191 /* SN9C202 + OV9650 */
192 { USB_DEVICE(USB_0C45_VID, USB_628F_PID) },
193 /* SN9C202 + OV7670ISP */
194 { USB_DEVICE(USB_0C45_VID, USB_62A0_PID) },
195 /* SN9C202 + OM6802 */
196 { USB_DEVICE(USB_0C45_VID, USB_62A2_PID) },
197 /* SN9C202 + MI0360/MT9V111 */
198 { USB_DEVICE(USB_0C45_VID, USB_62B0_PID) },
199 /* SN9C202 + OV9655 */
200 { USB_DEVICE(USB_0C45_VID, USB_62B3_PID) },
201 /* SN9C202 + S5K53BEB */
202 { USB_DEVICE(USB_0C45_VID, USB_62BA_PID) },
203 /* SN9C202 + OV7660 */
204 { USB_DEVICE(USB_0C45_VID, USB_62BB_PID) },
205 /* SN9C202 + HV7131R */
206 { USB_DEVICE(USB_0C45_VID, USB_62BC_PID) },
207 /* SN9C202 + OV7663 */
208 { USB_DEVICE(USB_0C45_VID, USB_62BE_PID) },
209 /* => 628f (SN9C202 + OV9650) */
210 { USB_DEVICE(USB_045E_VID, USB_00F4_PID) },
211 /* => 627b (SN9C201 + OV7660) */
212 { USB_DEVICE(USB_145F_VID, USB_013D_PID) },
213 /* => 62be (SN9C202 + OV7663 + EEPROM) */
214 { USB_DEVICE(USB_04F2_VID, USB_A128_PID) },
215 { }
216 };
217
218
219 MODULE_DEVICE_TABLE(usb, microdia_table); /**< Define the supported devices */
220
221 DEFINE_MUTEX(open_lock); /**< Define global mutex */
222
223 extern int microdia_6240_initialize(struct usb_microdia *dev);
224 extern int microdia_6240_start_stream(struct usb_microdia *dev);
225 extern int microdia_6240_stop_stream(struct usb_microdia *dev);
226 extern int microdia_6242_start_stream(struct usb_microdia *dev);
227 extern int microdia_6242_stop_stream(struct usb_microdia *dev);
228 extern int microdia_624e_initialize(struct usb_microdia *dev);
229 extern int microdia_624e_start_stream(struct usb_microdia *dev);
230 extern int microdia_624e_stop_stream(struct usb_microdia *dev);
231 extern int microdia_624f_initialize(struct usb_microdia *dev);
232 extern int microdia_624f_stop_stream(struct usb_microdia *dev);
233 extern int microdia_624f_start_stream(struct usb_microdia *dev);
234 extern int microdia_624f_set_exposure(struct usb_microdia *dev);
235 extern int microdia_624f_flip_detect(struct usb_microdia *dev);
236 extern int microdia_6260_initialize(struct usb_microdia *dev);
237 extern int microdia_6260_start_stream(struct usb_microdia *dev);
238 extern int microdia_6260_stop_stream(struct usb_microdia *dev);
239 extern int microdia_6260_flip_detect(struct usb_microdia *dev);
240 extern int microdia_6270_initialize(struct usb_microdia *dev);
241 extern int microdia_6270_start_stream(struct usb_microdia *dev);
242 extern int microdia_6270_stop_stream(struct usb_microdia *dev);
243 extern int microdia_627b_initialize(struct usb_microdia *dev);
244 extern int microdia_627b_start_stream(struct usb_microdia *dev);
245 extern int microdia_627b_stop_stream(struct usb_microdia *dev);
246 extern int microdia_627f_initialize(struct usb_microdia *dev);
247 extern int microdia_6288_initialize(struct usb_microdia *dev);
248 extern int microdia_6288_start_stream(struct usb_microdia *dev);
249 extern int microdia_6288_stop_stream(struct usb_microdia *dev);
250
251 struct microdia_camera cameras[] = {
252 {
253 .model = CAMERA_MODEL(USB_0C45_VID, USB_6240_PID),
254 .type = MICRODIA_VGA,
255 .sensor_slave_address = 0x5d,
256 .sensor_flags = SN9C20X_I2C_2WIRE,
257 .supported_fmts = 0x03,
258 .initialize = microdia_6240_initialize,
259 .start_stream = microdia_6240_start_stream,
260 .stop_stream = microdia_6240_stop_stream,
261 },
262 {
263 .model = CAMERA_MODEL(USB_0C45_VID, USB_6242_PID),
264 .type = MICRODIA_VGA,
265 .sensor_slave_address = 0x5d,
266 .sensor_flags = SN9C20X_I2C_2WIRE,
267 .supported_fmts = 0x03,
268 .initialize = microdia_624e_initialize,
269 .start_stream = microdia_6242_start_stream,
270 .stop_stream = microdia_6242_stop_stream,
271 },
272 {
273 .model = CAMERA_MODEL(USB_0C45_VID, USB_624E_PID),
274 .type = MICRODIA_VGA,
275 .sensor_slave_address = 0x30,
276 .sensor_flags = SN9C20X_I2C_2WIRE,
277 .supported_fmts = 0x03,
278 .initialize = microdia_624e_initialize,
279 .start_stream = microdia_624e_start_stream,
280 .stop_stream = microdia_624e_stop_stream,
281 .set_auto_exposure = ov965x_set_autoexposure,
282 },
283 {
284 .model = CAMERA_MODEL(USB_0C45_VID, USB_624F_PID),
285 .type = MICRODIA_VGA,
286 .sensor_slave_address = 0x30,
287 .sensor_flags = SN9C20X_I2C_2WIRE,
288 .supported_fmts = 0x03,
289 .initialize = microdia_624f_initialize,
290 .sensor_init = ov965x_initialize,
291 .start_stream = microdia_624f_start_stream,
292 .stop_stream = microdia_624f_stop_stream,
293 .flip_detect = microdia_624f_flip_detect,
294 .set_auto_exposure = ov965x_set_autoexposure,
295 .set_exposure = ov965x_set_exposure,
296 .set_hvflip = ov965x_set_hvflip,
297 },
298 {
299 .model = CAMERA_MODEL(USB_0C45_VID, USB_6253_PID),
300 .type = MICRODIA_VGA,
301 .sensor_slave_address = 0x30,
302 .sensor_flags = SN9C20X_I2C_2WIRE,
303 .supported_fmts = 0x03,
304 .initialize = microdia_624f_initialize,
305 .sensor_init = ov965x_initialize,
306 .start_stream = microdia_624f_start_stream,
307 .stop_stream = microdia_624f_stop_stream,
308 .flip_detect = microdia_624f_flip_detect,
309 .set_auto_exposure = ov965x_set_autoexposure,
310 .set_exposure = ov965x_set_exposure,
311 .set_hvflip = ov965x_set_hvflip,
312 },
313 {
314 .model = CAMERA_MODEL(USB_0C45_VID, USB_6260_PID),
315 .type = MICRODIA_VGA,
316 .sensor_slave_address = 0x21,
317 .sensor_flags = SN9C20X_I2C_2WIRE,
318 .supported_fmts = 0x08,
319 .initialize = microdia_6260_initialize,
320 .start_stream = microdia_6260_start_stream,
321 .stop_stream = microdia_6260_stop_stream,
322 .flip_detect = microdia_6260_flip_detect,
323 },
324 {
325 .model = CAMERA_MODEL(USB_0C45_VID, USB_6270_PID),
326 .type = MICRODIA_VGA,
327 .sensor_slave_address = 0,
328 .sensor_flags = SN9C20X_I2C_2WIRE,
329 .supported_fmts = 0x07,
330 .initialize = microdia_6270_initialize,
331 .start_stream = microdia_6270_start_stream,
332 .stop_stream = microdia_6270_stop_stream,
333 .set_exposure = mt9vx11_set_exposure,
334 .set_hvflip = mt9vx11_set_hvflip,
335 .set_auto_exposure = mt9v111_set_autoexposure,
336 .set_auto_whitebalance = mt9v111_set_autowhitebalance,
337 },
338 {
339 .model = CAMERA_MODEL(USB_0C45_VID, USB_627B_PID),
340 .type = MICRODIA_VGA,
341 .sensor_slave_address = 0x21,
342 .sensor_flags = SN9C20X_I2C_2WIRE,
343 .supported_fmts = 0x07,
344 .initialize = microdia_627b_initialize,
345 .start_stream = microdia_627b_start_stream,
346 .stop_stream = microdia_627b_stop_stream,
347 },
348 {
349 .model = CAMERA_MODEL(USB_0C45_VID, USB_627F_PID),
350 .type = MICRODIA_VGA,
351 .sensor_slave_address = 0x30,
352 .sensor_flags = SN9C20X_I2C_2WIRE,
353 .supported_fmts = 0x03,
354 .initialize = microdia_624f_initialize,
355 .sensor_init = ov965x_initialize,
356 .start_stream = microdia_624f_start_stream,
357 .stop_stream = microdia_624f_stop_stream,
358 .flip_detect = microdia_624f_flip_detect,
359 .set_exposure = ov965x_set_exposure,
360 .set_hvflip = ov965x_set_hvflip,
361 },
362 {
363 .model = CAMERA_MODEL(USB_0C45_VID, USB_6288_PID),
364 .type = MICRODIA_VGA,
365 .sensor_slave_address = 0x30,
366 .sensor_flags = SN9C20X_I2C_2WIRE,
367 .supported_fmts = 0x03,
368 .initialize = microdia_6288_initialize,
369 .start_stream = microdia_6288_start_stream,
370 .stop_stream = microdia_6288_stop_stream,
371 .set_auto_exposure = ov965x_set_autoexposure,
372 },
373 {
374 .model = CAMERA_MODEL(USB_0C45_VID, USB_62B3_PID),
375 .type = MICRODIA_VGA,
376 .sensor_slave_address = 0x30,
377 .sensor_flags = SN9C20X_I2C_2WIRE,
378 .supported_fmts = 0x03,
379 .initialize = microdia_6288_initialize,
380 .start_stream = microdia_6288_start_stream,
381 .stop_stream = microdia_6288_stop_stream,
382 },
383 {
384 .model = CAMERA_MODEL(USB_0C45_VID, USB_62BB_PID),
385 .type = MICRODIA_VGA,
386 .sensor_slave_address = 0x21,
387 .sensor_flags = SN9C20X_I2C_2WIRE,
388 .supported_fmts = 0x07,
389 .initialize = microdia_627b_initialize,
390 .start_stream = microdia_627b_start_stream,
391 .stop_stream = microdia_627b_stop_stream,
392 },
393 {
394 .model = CAMERA_MODEL(USB_145F_VID, USB_013D_PID),
395 .type = MICRODIA_VGA,
396 .sensor_slave_address = 0x21,
397 .sensor_flags = SN9C20X_I2C_2WIRE,
398 .supported_fmts = 0x07,
399 .initialize = microdia_627b_initialize,
400 .start_stream = microdia_627b_start_stream,
401 .stop_stream = microdia_627b_stop_stream,
402 },
403 };
404
405
406 static inline struct microdia_camera *find_camera(__u32 model)
407 {
408 int i;
409 for (i = 0; i < ARRAY_SIZE(cameras); i++) {
410 if (cameras[i].model == model)
411 return &cameras[i];
412 }
413 return NULL;
414 }
415
416 /**
417 * @param dev Device structure
418 *
419 * @returns 0 if all is OK
420 *
421 * @brief Initilize an isochronous pipe.
422 *
423 * This function permits to initialize an URB transfert (or isochronous pipe).
424 */
425 int usb_microdia_isoc_init(struct usb_microdia *dev)
426 {
427 int i, j;
428 int ret = 0;
429 __u16 iso_max_frame_size;
430 struct urb *urb;
431 struct usb_device *udev;
432
433 if (dev == NULL)
434 return -EFAULT;
435
436 udev = dev->udev;
437
438 UDIA_DEBUG("usb_microdia_isoc_init()\n");
439
440 iso_max_frame_size = max_packet_sz(le16_to_cpu(dev->isoc_in_size)) *
441 hb_multiplier(le16_to_cpu(dev->isoc_in_size));
442
443 for (i = 0; i < MAX_ISO_BUFS; i++) {
444 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
445
446 if (urb == NULL) {
447 UDIA_ERROR("Failed to allocate URB %d\n", i);
448 usb_microdia_isoc_cleanup(dev);
449 return -ENOMEM;
450 }
451
452 urb->interval = 1;
453 urb->dev = udev;
454 urb->pipe = usb_rcvisocpipe(udev, dev->isoc_in_endpointAddr);
455 urb->transfer_flags = URB_ISO_ASAP;
456 urb->transfer_buffer_length = iso_max_frame_size * ISO_FRAMES_PER_DESC;
457 urb->complete = usb_microdia_isoc_handler;
458 urb->context = dev;
459 urb->start_frame = 0;
460 urb->number_of_packets = ISO_FRAMES_PER_DESC;
461
462 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
463 urb->iso_frame_desc[j].offset = j * iso_max_frame_size;
464 urb->iso_frame_desc[j].length = iso_max_frame_size;
465 }
466
467 dev->isobuf[i].data = kzalloc(urb->transfer_buffer_length,
468 GFP_KERNEL);
469 if (dev->isobuf[i].data == NULL) {
470 usb_microdia_isoc_cleanup(dev);
471 return -ENOMEM;
472 }
473
474 urb->transfer_buffer = dev->isobuf[i].data;
475 dev->isobuf[i].urb = urb;
476 }
477
478 UDIA_DEBUG("dev->isoc_in_size = %X\n", (unsigned int)dev->isoc_in_size);
479 UDIA_DEBUG("dev->isoc_in_endpointAddr = %X\n", dev->isoc_in_endpointAddr);
480
481 for (i = 0; i < MAX_ISO_BUFS; i++) {
482 ret = usb_submit_urb(dev->isobuf[i].urb, GFP_KERNEL);
483
484 if (ret)
485 UDIA_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret);
486 }
487
488 return 0;
489 }
490
491
492 /**
493 * @param urb URB structure
494 *
495 * @brief ISOC handler
496 *
497 * This function is called as an URB transfert is complete (Isochronous pipe).
498 * So, the traitement is done in interrupt time, so it has be fast, not crash,
499 * and not stall. Neat.
500 */
501 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
502 void usb_microdia_isoc_handler(struct urb *urb, struct pt_regs *regs)
503 #else
504 void usb_microdia_isoc_handler(struct urb *urb)
505 #endif
506 {
507 int i;
508 int ret;
509
510 int framestatus;
511 unsigned int framelen;
512 unsigned long flags;
513
514 unsigned char *iso_buf = NULL;
515
516 void *mem = NULL;
517 struct microdia_buffer *buf = NULL;
518 struct usb_microdia *dev = urb->context;
519 struct microdia_video_queue *queue = &dev->queue;
520
521 unsigned char frame_header[] = {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96};
522
523 UDIA_STREAM("Isoc handler\n");
524
525 switch (urb->status) {
526 case 0:
527 break;
528
529 default:
530 UDIA_WARNING("Non-zero status (%d) in video "
531 "completion handler.\n", urb->status);
532
533 case -ENOENT: /* usb_kill_urb() called. */
534 if (queue->frozen)
535 return;
536
537 case -ECONNRESET: /* usb_unlink_urb() called. */
538 case -ESHUTDOWN: /* The endpoint is being disabled. */
539 microdia_queue_cancel(queue);
540 return;
541 }
542
543 spin_lock_irqsave(&queue->irqlock, flags);
544 if (!list_empty(&queue->irqqueue))
545 buf = list_first_entry(&queue->irqqueue, struct microdia_buffer,
546 queue);
547 spin_unlock_irqrestore(&queue->irqlock, flags);
548
549 for (i = 0; i < urb->number_of_packets; i++) {
550 framestatus = urb->iso_frame_desc[i].status;
551 if (framestatus != 0) {
552 UDIA_ERROR("Iso frame %d of USB has error %d\n",
553 i, framestatus);
554 continue;
555 }
556 framelen = urb->iso_frame_desc[i].actual_length;
557 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
558
559 if (buf == NULL)
560 continue;
561
562 if (memcmp(iso_buf, frame_header, 6) == 0 && framelen == 64) {
563 UDIA_DEBUG("Frame Resolution: %dx%d\n",
564 iso_buf[0x3a] << 4, iso_buf[0x3b] << 3);
565 if (buf->buf.bytesused != 0)
566 buf->state = MICRODIA_BUF_STATE_DONE;
567 } else {
568 if (buf->state != MICRODIA_BUF_STATE_ACTIVE)
569 buf->state = MICRODIA_BUF_STATE_ACTIVE;
570
571 if (framelen + buf->buf.bytesused > queue->frame_size) {
572 UDIA_WARNING("Frame Buffer overflow!\n");
573 dev->vframes_overflow++;
574 buf->state = MICRODIA_BUF_STATE_DONE;
575 }
576 framelen = min(queue->frame_size - buf->buf.bytesused,
577 framelen);
578 mem = queue->mem + buf->buf.m.offset +
579 buf->buf.bytesused;
580 memcpy(mem, iso_buf, framelen);
581 buf->buf.bytesused += framelen;
582 }
583 if (buf->state == MICRODIA_BUF_STATE_DONE ||
584 buf->state == MICRODIA_BUF_STATE_ERROR) {
585 buf = microdia_queue_next_buffer(queue, buf);
586 if (buf == NULL)
587 dev->vframes_dropped++;
588 }
589 }
590
591 urb->dev = dev->udev;
592
593 ret = usb_submit_urb(urb, GFP_ATOMIC);
594
595 if (ret != 0) {
596 UDIA_ERROR("Error (%d) re-submitting urb in "
597 "microdia_isoc_handler.\n", ret);
598 }
599 }
600
601
602 /**
603 * @param dev Device structure
604 *
605 * @brief Clean-up all the ISOC buffers
606 *
607 * This function permits to clean-up all the ISOC buffers.
608 */
609 void usb_microdia_isoc_cleanup(struct usb_microdia *dev)
610 {
611 int i;
612 struct urb *urb;
613
614 UDIA_DEBUG("Isoc cleanup\n");
615
616 if (dev == NULL)
617 return;
618
619 for (i = 0; i < MAX_ISO_BUFS; i++) {
620 urb = dev->isobuf[i].urb;
621 if (urb == NULL)
622 continue;
623
624 usb_kill_urb(urb);
625 if (dev->isobuf[i].data) {
626 kfree(dev->isobuf[i].data);
627 dev->isobuf[i].data = NULL;
628 }
629 usb_free_urb(urb);
630 dev->isobuf[i].urb = NULL;
631 }
632 }
633
634
635
636 /**
637 * @param dev Device structure
638 * @param index Choice of the interface
639 *
640 * @returns 0 if all is OK
641 *
642 * @brief Send the message SET_FEATURE and choose the interface
643 *
644 * This function permits to send the message SET_FEATURE on the USB bus.
645 */
646 int usb_microdia_set_feature(struct usb_microdia *dev, int index)
647 {
648 int result;
649 struct usb_device *udev = dev->udev;
650
651 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
652 USB_REQ_SET_FEATURE,
653 USB_TYPE_STANDARD | USB_DIR_OUT | USB_RECIP_DEVICE,
654 USB_DEVICE_REMOTE_WAKEUP,
655 index,
656 NULL,
657 0,
658 500);
659
660 if (result < 0)
661 UDIA_ERROR("SET FEATURE fail !\n");
662 else
663 UDIA_DEBUG("SET FEATURE\n");
664
665 return result;
666 }
667
668
669 /**
670 * @param dev Device structure
671 *
672 * @returns 0 if all is OK
673 *
674 * @brief Send the message SET_CONFIGURATION
675 *
676 * This function permits to send the message SET_CONFIGURATION on the USB bus.
677 */
678 int usb_microdia_set_configuration(struct usb_microdia *dev)
679 {
680 int result;
681 struct usb_device *udev = dev->udev;
682
683 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
684 USB_REQ_SET_CONFIGURATION,
685 USB_TYPE_STANDARD | USB_DIR_OUT | USB_RECIP_DEVICE,
686 0,
687 udev->config[0].desc.bConfigurationValue,
688 NULL,
689 0,
690 500);
691
692 if (result < 0)
693 UDIA_ERROR("SET CONFIGURATION fail !\n");
694 else
695 UDIA_DEBUG("SET CONFIGURATION %d\n", udev->config[0].desc.bConfigurationValue);
696
697 return result;
698 }
699
700
701 /**
702 * @param dev Device structure
703 * @param value register to write to
704 * @param data
705 * @param length number of bytes
706 *
707 * @returns 0 if all is OK
708 *
709 * @brief Write a 16-bit value to a 16-bit register
710 *
711 * This function permits to write a 16-bit value to a 16-bit register on the USB bus.
712 */
713 int usb_microdia_control_write(struct usb_microdia *dev, __u16 value, __u8 *data, __u16 length)
714 {
715 int result;
716 struct usb_device *udev = dev->udev;
717
718 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
719 0x08,
720 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
721 value,
722 0x00,
723 data,
724 length,
725 500);
726
727 if (result < 0)
728 UDIA_ERROR("Write register failed index = 0x%02X\n", value);
729
730 return result;
731 }
732
733 /**
734 * @param dev
735 * @param commands
736 * @param data
737 * @param cmdlen
738 * @param datalen
739 *=
740 * @returns 0 if all is OK
741 *
742 * @brief Write a series of 16-bit "commands" using the same buffer
743 */
744 int usb_microdia_control_write_multi(struct usb_microdia *dev, __u16 *commands, __u8 *data,
745 __u16 cmdlen, __u16 datalen)
746 {
747 int result, i;
748
749 for (i = 0; i < cmdlen; i++) {
750 result = usb_microdia_control_write(dev, commands[i], data, datalen);
751
752 if (result < 0)
753 return result;
754 }
755
756 return 0;
757 }
758
759 /**
760 * @param dev Device structure
761 * @param index register to read from
762 * @param data
763 * @param length number of bytes
764 *
765 * @returns 0 if all is OK
766 *
767 * @brief Read a 16-bit value from a 16-bit register
768 *
769 * This function permits to read a 16-bit value from a 16-bit register on the USB bus.
770 */
771 int usb_microdia_control_read(struct usb_microdia *dev, __u16 index, __u8 *data, __u16 length)
772 {
773 int result;
774
775 struct usb_device *udev = dev->udev;
776
777 *data = 0;
778
779 result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
780 0x00,
781 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
782 index,
783 0x00,
784 data,
785 length,
786 500);
787
788 if (result < 0)
789 UDIA_ERROR("Read register failed 0x%02X\n", index);
790
791 return result;
792 }
793
794
795 /**
796 * @param dev
797 *
798 * @returns 0 if all is OK
799 *
800 * @brief Set the default value about the video settings.
801 *
802 * This function permits to set the video settings for each video camera model.
803 *
804 */
805 static int usb_microdia_default_settings(struct usb_microdia *dev)
806 {
807 struct v4l2_pix_format *def_fmt;
808
809 dev->vframes_overflow = 0;
810 dev->vframes_incomplete = 0;
811 dev->vframes_dropped = 0;
812
813 dev->queue.min_buffers = min_buffers;
814 dev->queue.max_buffers = max_buffers;
815
816 def_fmt = v4l2_enum_supported_formats(dev, 0);
817
818 switch (dev->webcam_model) {
819 default:
820 dev->vsettings.fps = fps;
821 dev->vsettings.vflip = vflip;
822 dev->vsettings.hflip = hflip;
823 dev->vsettings.brightness = brightness & 0xffff;
824 dev->vsettings.contrast = contrast & 0xffff;
825 dev->vsettings.whiteness = whiteness & 0xffff;
826 dev->vsettings.exposure = exposure & 0xffff;
827 dev->vsettings.sharpness = sharpness & 0x3f;
828 dev->vsettings.rgb_gain[0] = (rgb_gain >> 16) & 0x7f;
829 dev->vsettings.rgb_gain[1] = (rgb_gain >> 8) & 0x7f;
830 dev->vsettings.rgb_gain[2] = (rgb_gain >> 8) & 0x7f;
831 dev->vsettings.rgb_gain[3] = rgb_gain & 0x7f;
832 dev->vsettings.auto_exposure = auto_exposure & 1;
833 dev->vsettings.auto_whitebalance = auto_whitebalance & 1;
834 dev->vsettings.hue = 0xffff;
835
836 if (def_fmt) {
837 memcpy(&(dev->vsettings.format),
838 def_fmt,
839 sizeof(struct v4l2_pix_format));
840 }
841
842 sn9c20x_set_resolution(dev, 640, 480);
843 break;
844 }
845 return 0;
846 }
847
848 /**
849 * @param interface
850 * @param id
851 *
852 * @returns 0 if all is OK
853 *
854 * @brief Load the driver
855 *
856 * This function detects the device and allocate the buffers for the device
857 * and the video interface.
858 */
859 static int usb_microdia_probe(struct usb_interface *interface, const struct usb_device_id *id)
860 {
861 int i;
862 int ret;
863 size_t buffer_size;
864
865 int vendor_id;
866 int product_id;
867 int bNumInterfaces;
868
869 struct usb_microdia *dev = NULL;
870 struct usb_device *udev = interface_to_usbdev(interface);
871 struct usb_host_interface *iface_desc;
872 struct usb_endpoint_descriptor *endpoint;
873 struct microdia_camera *camera = NULL;
874
875 /* Get USB VendorID and ProductID */
876 vendor_id = le16_to_cpu(udev->descriptor.idVendor);
877 product_id = le16_to_cpu(udev->descriptor.idProduct);
878
879 /* Check if we can handle this device */
880 UDIA_DEBUG("Probe function called with VendorID=%04X, ProductID=%04X and InterfaceNumber=%d\n",
881 vendor_id, product_id, interface->cur_altsetting->desc.bInterfaceNumber);
882
883 /*
884 //The interface are probed one by one.
885 // We are interested in the video interface (always the interface '0')
886 // The interfaces '1' or '2' (if presents) are the audio control.
887 */
888 if (interface->cur_altsetting->desc.bInterfaceNumber > 0) {
889 ret = -ENODEV;
890 goto error;
891 }
892
893 /* Detect device */
894 camera = find_camera(CAMERA_MODEL(vendor_id, product_id));
895 if (camera == NULL) {
896 UDIA_INFO("Camera %04X:%04X not supported.\n",
897 vendor_id, product_id);
898 ret = -ENODEV;
899 goto error;
900 }
901
902 UDIA_INFO("Microdia USB2.0 Webcam - %04X:%04X found.\n",
903 vendor_id, product_id);
904
905
906 /*
907 // Allocate structure, initialize pointers, mutexes, etc.
908 // and link it to the usb_device
909 */
910 dev = kzalloc(sizeof(struct usb_microdia), GFP_KERNEL);
911
912 if (dev == NULL) {
913 UDIA_ERROR("Out of memory !\n");
914 ret = -ENOMEM;
915 goto error;
916 }
917
918 /* Init mutexes, spinlock, etc. */
919 mutex_init(&dev->mutex);
920 kref_init(&dev->vopen);
921
922 /* Save pointers */
923 dev->webcam_model = camera->model;
924 dev->webcam_type = camera->type;
925 if (dev->webcam_model == CAMERA_MODEL(USB_0C45_VID, USB_6260_PID))
926 dev->frame_size_divisor = MICRODIA_FRAME_SIZE_DIVISOR_6260;
927 else
928 dev->frame_size_divisor = MICRODIA_FRAME_SIZE_DIVISOR_DEFAULT;
929 dev->initialize = camera->initialize;
930 dev->sensor_init = camera->sensor_init;
931 dev->stop_stream = camera->stop_stream;
932 dev->start_stream = camera->start_stream;
933 dev->set_contrast = camera->set_contrast == NULL ?
934 sn9c20x_set_contrast : camera->set_contrast;
935 dev->set_brightness = camera->set_brightness == NULL ?
936 sn9c20x_set_brightness : camera->set_brightness;
937 dev->set_gamma = camera->set_gamma == NULL ?
938 sn9c20x_set_gamma : camera->set_gamma;
939 dev->set_sharpness = camera->set_sharpness == NULL ?
940 sn9c20x_set_sharpness : camera->set_sharpness;
941 dev->set_rgb_gain = camera->set_rgb_gain == NULL ?
942 sn9c20x_set_rgb_gain : camera->set_rgb_gain;
943 dev->set_exposure = camera->set_exposure;
944 if (flip_detect) {
945 UDIA_INFO("Rotate detection enabled\n");
946 dev->flip_detect = camera->flip_detect;
947 }
948 dev->set_hvflip = camera->set_hvflip;
949 dev->set_auto_exposure = camera->set_auto_exposure;
950 dev->set_auto_whitebalance = camera->set_auto_whitebalance;
951 dev->udev = udev;
952 dev->interface = interface;
953
954 dev->sensor_slave_address = camera->sensor_slave_address;
955 dev->sensor_flags = camera->sensor_flags;
956 dev->supported_fmts = camera->supported_fmts;
957
958 /* Read the product release */
959 dev->release = le16_to_cpu(udev->descriptor.bcdDevice);
960 UDIA_INFO("Release: %04x\n", dev->release);
961
962 /* How many interfaces (1 or 3) ? */
963 bNumInterfaces = udev->config->desc.bNumInterfaces;
964 UDIA_INFO("Number of interfaces : %d\n", bNumInterfaces);
965
966
967 /* Switch on the camera (to detect size of buffers) */
968 dev_microdia_camera_on(dev);
969
970 /*
971 // Set up the endpoint information
972 // use only the first int-in and isoc-in endpoints
973 // for the current alternate setting
974 */
975 iface_desc = interface->cur_altsetting;
976
977 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
978 endpoint = &iface_desc->endpoint[i].desc;
979
980 if (!dev->int_in_endpointAddr
981 && ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
982 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
983 /* we found an interrupt in endpoint */
984 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
985
986 dev->int_in_size = buffer_size;
987 dev->int_in_endpointAddr = (endpoint->bEndpointAddress & 0xf);
988 }
989
990 if (!dev->isoc_in_endpointAddr
991 && ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
992 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) {
993 /* we found an isoc in endpoint */
994 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
995
996 dev->isoc_in_size = buffer_size;
997 dev->isoc_in_endpointAddr = (endpoint->bEndpointAddress & 0xf);
998 }
999 }
1000
1001 if (!(dev->int_in_endpointAddr && dev->isoc_in_endpointAddr)) {
1002 UDIA_ERROR("Could not find both int-in and isoc-in endpoints");
1003 ret = -ENODEV;
1004 goto free_dev;
1005 }
1006
1007 usb_microdia_default_settings(dev);
1008
1009 dev_microdia_camera_off(dev);
1010
1011 /* Initialize the video device */
1012 dev->vdev = video_device_alloc();
1013
1014 if (!dev->vdev) {
1015 ret = -ENOMEM;
1016 goto free_dev;
1017 }
1018
1019 /* Initialize the camera */
1020 dev_microdia_initialize_device(dev);
1021
1022 /* Register the video device */
1023 ret = v4l_microdia_register_video_device(dev);
1024
1025 if (ret)
1026 goto free_dev;
1027
1028 /* Create the entries in the sys filesystem */
1029 microdia_create_sysfs_files(dev->vdev);
1030
1031 #ifdef CONFIG_MICRODIA_DEBUGFS
1032 microdia_create_debugfs_files(dev);
1033 #endif
1034
1035 /* Save our data pointer in this interface device */
1036 usb_set_intfdata(interface, dev);
1037
1038 return 0;
1039
1040 free_dev:
1041 kref_put(&dev->vopen, usb_microdia_delete);
1042 error:
1043 return ret;
1044 }
1045
1046 void usb_microdia_delete(struct kref *kref)
1047 {
1048 struct usb_microdia *dev;
1049 dev = container_of(kref, struct usb_microdia, vopen);
1050
1051 if (dev->vdev != NULL) {
1052 microdia_remove_sysfs_files(dev->vdev);
1053 #ifdef CONFIG_MICRODIA_DEBUGFS
1054 microdia_remove_debugfs_files(dev);
1055 #endif
1056 v4l_microdia_unregister_video_device(dev);
1057 }
1058 kfree(dev);
1059 }
1060
1061 /**
1062 * @param interface
1063 *
1064 * @brief This function is called when the device is disconnected
1065 * or when the kernel module is unloaded.
1066 */
1067 static void usb_microdia_disconnect(struct usb_interface *interface)
1068 {
1069 struct usb_microdia *dev = usb_get_intfdata(interface);
1070
1071 UDIA_INFO("Microdia USB2.0 Camera disconnected\n");
1072
1073 usb_set_intfdata(interface, NULL);
1074
1075 mutex_lock(&open_lock);
1076 kref_put(&dev->vopen, usb_microdia_delete);
1077 mutex_unlock(&open_lock);
1078 }
1079
1080
1081 /**
1082 * @var usb_microdia_driver
1083 *
1084 * This variable contains some callback
1085 */
1086 static struct usb_driver usb_microdia_driver = {
1087 .name = "usb_microdia_driver",
1088 .probe = usb_microdia_probe,
1089 .disconnect = usb_microdia_disconnect,
1090 .id_table = microdia_table,
1091 };
1092
1093 module_param(fps, int, 0444); /**< @brief Module parameter frames per second */
1094 module_param(hflip, int, 0444); /**< @brief Module parameter horizontal flip process */
1095 module_param(vflip, int, 0444); /**< @brief Module parameter vertical flip process */
1096 module_param(flip_detect, int, 0444); /**< @brief Module parameter flip detect */
1097 module_param(auto_exposure, int, 0444); /**< @brief Module parameter automatic exposure control */
1098 module_param(auto_whitebalance, int, 0444); /**< @brief Module parameter automatic whitebalance control */
1099 module_param(brightness, int, 0444); /**< @brief Module parameter brightness */
1100 module_param(whiteness, int, 0444); /**< @brief Module parameter whiteness */
1101 module_param(contrast, int, 0444); /**< @brief Module parameter contrast */
1102 module_param(exposure, int, 0444); /**< @brief Module parameter exposure */
1103 module_param(sharpness, int, 0444); /**< @brief Module parameter sharpness */
1104 module_param(rgb_gain, int, 0444); /**< @brief Module parameter red/green/blue gain */
1105
1106 module_param(min_buffers, int, 0444);
1107 module_param(max_buffers, int, 0444);
1108
1109 module_param(log_level, byte, 0444);
1110
1111 /**
1112 * @returns 0 if all is OK
1113 *
1114 * @brief Initialize the driver.
1115 *
1116 * This function is called at first.
1117 * This function permits to define the default values from the command line.
1118 */
1119 static int __init usb_microdia_init(void)
1120 {
1121 int result;
1122
1123 UDIA_INFO("Microdia USB2.0 webcam driver startup\n");
1124
1125 #ifdef CONFIG_MICRODIA_DEBUGFS
1126 microdia_init_debugfs();
1127 #endif
1128
1129 if (fps < 10 || fps > 30) {
1130 UDIA_WARNING("Framerate out of bounds [10-30]! Defaulting to 25\n");
1131 fps = 25;
1132 }
1133
1134 if (vflip != 0 && vflip != 1) {
1135 UDIA_WARNING("Vertical flip should be 0 or 1! Defaulting to 0\n");
1136 vflip = 0;
1137 }
1138
1139 if (hflip != 0 && hflip != 1) {
1140 UDIA_WARNING("Horizontal flip should be 0 or 1! Defaulting to 0\n");
1141 hflip = 0;
1142 }
1143
1144 if (sharpness < 0 || sharpness > 0x3f) {
1145 UDIA_WARNING("Sharpness should be 0 to 63 ! Defaulting to 31\n");
1146 sharpness = 0x1f;
1147 }
1148
1149 if ((rgb_gain >> 16) < 0 || (rgb_gain >> 16) > 0x7f) {
1150 UDIA_WARNING("Red Gain should be 0 to 127 ! Defaulting to 32\n");
1151 rgb_gain = (rgb_gain & 0x0000ffff) | 0x200000;
1152 }
1153
1154 if (((rgb_gain >> 8) & 0xFF) < 0 || ((rgb_gain >> 8) & 0xFF) > 0x7f) {
1155 UDIA_WARNING("Green Gain should be 0 to 127 ! Defaulting to 32\n");
1156 rgb_gain = (rgb_gain & 0x00ff00ff) | 0x002000;
1157 }
1158
1159 if ((rgb_gain & 0xFF) < 0 || (rgb_gain & 0xFF) > 0x7f) {
1160 UDIA_WARNING("Blue Gain should be 0 to 127 ! Defaulting to 32\n");
1161 rgb_gain = (rgb_gain & 0x00ffff00) | 0x20;
1162 }
1163
1164 if (auto_exposure != 0 && auto_exposure != 1) {
1165 UDIA_WARNING("Automatic exposure should be 0 or 1! "
1166 "Defaulting to 1\n");
1167 auto_exposure = 1;
1168 }
1169
1170 if (auto_whitebalance != 0 && auto_whitebalance != 1) {
1171 UDIA_WARNING("Automatic whitebalance should be 0 or 1! "
1172 "Defaulting to 1\n");
1173 auto_whitebalance = 1;
1174 }
1175
1176 if (min_buffers < 2) {
1177 UDIA_WARNING("Minimum buffers can't be less then 2! "
1178 "Defaulting to 2\n");
1179 min_buffers = 2;
1180 }
1181
1182
1183 if (min_buffers > max_buffers) {
1184 UDIA_WARNING("Minimum buffers must be less then or equal to "
1185 "max buffers! Defaulting to 2, 10\n");
1186 min_buffers = 2;
1187 max_buffers = 5;
1188 }
1189
1190 /* Register the driver with the USB subsystem */
1191 result = usb_register(&usb_microdia_driver);
1192
1193 if (result)
1194 UDIA_ERROR("usb_register failed ! Error number %d\n", result);
1195
1196 UDIA_INFO(DRIVER_VERSION " : " DRIVER_DESC "\n");
1197
1198 return result;
1199 }
1200
1201
1202 /**
1203 * @brief Close the driver
1204 *
1205 * This function is called at last when you unload the driver.
1206 */
1207 static void __exit usb_microdia_exit(void)
1208 {
1209 UDIA_INFO("usb_microdia_exit: Microdia USB2.0 webcam driver shutdown\n");
1210
1211 #ifdef CONFIG_MICRODIA_DEBUGFS
1212 microdia_uninit_debugfs();
1213 #endif
1214
1215 /* Deregister this driver with the USB subsystem */
1216 usb_deregister(&usb_microdia_driver);
1217 }
1218
1219
1220 module_init(usb_microdia_init); /**< @brief Module initialize */
1221 module_exit(usb_microdia_exit); /**< @brief Module exit */
1222
1223
1224 MODULE_PARM_DESC(fps, "Frames per second [10-30]"); /**< @brief Description of 'fps' parameter */
1225 MODULE_PARM_DESC(hflip, "Horizontal image flip"); /**< @brief Description of 'hflip' parameter */
1226 MODULE_PARM_DESC(vflip, "Vertical image flip"); /**< @brief Description of 'vflip' parameter */
1227 MODULE_PARM_DESC(flip_detect, "Image flip detection"); /**< @brief Description of 'vflip_detect' parameter */
1228 MODULE_PARM_DESC(auto_exposure, "Automatic exposure control"); /**< @brief Description of 'auto_exposure' parameter */
1229 MODULE_PARM_DESC(auto_whitebalance, "Automatic whitebalance"); /**< @brief Description of 'auto_whitebalance' parameter */
1230 MODULE_PARM_DESC(brightness, "Brightness setting"); /**< @brief Description of 'brightness' parameter */
1231 MODULE_PARM_DESC(whiteness, "Whiteness setting"); /**< @brief Description of 'whiteness' parameter */
1232 MODULE_PARM_DESC(exposure, "Exposure setting"); /**< @brief Description of 'exposure' parameter */
1233 MODULE_PARM_DESC(contrast, "Contrast setting"); /**< @brief Description of 'contrast' parameter */
1234 MODULE_PARM_DESC(sharpness, "Sharpness setting"); /**< @brief Description of 'sharpness' parameter */
1235 MODULE_PARM_DESC(rgb_gain, "Red/Green/Blue Gain setting"); /**< @brief Description of 'RGB Gain' parameter */
1236
1237 MODULE_PARM_DESC(min_buffers, "Minimum number of image buffers");
1238 MODULE_PARM_DESC(max_buffers, "Maximum number of image buffers");
1239 MODULE_PARM_DESC(log_level, " <n>\n"
1240 "Driver log level\n"
1241 "1 = info (default)\n"
1242 "2 = warning\n"
1243 "4 = error\n"
1244 "8 = debug\n"
1245 "16 = stream\n");
1246
1247 MODULE_LICENSE("GPL"); /**< @brief Driver is under licence GPL */
1248 MODULE_AUTHOR(DRIVER_AUTHOR); /**< @brief Driver is written by Nicolas VIVIEN */
1249 MODULE_DESCRIPTION(DRIVER_DESC); /**< @brief Define the description of the driver */
1250 MODULE_SUPPORTED_DEVICE(DRIVER_SUPPORT); /**< @brief List of supported device */
1251
1252
Microdia : webcam kernel driver, for USB webcams with vendor id 0c45