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Merge ov966x.c, ov7670.c and ov7660.c into omnivision.c
[microdia.git] / microdia-v4l.c
blob936ca84958ea4fe9dd40166d139c73272123ee71
1 /**
2 * @file microdia-v4l.c
3 * @author Nicolas VIVIEN
4 * @date 2008-02-01
5 *
6 * @brief V4L2 interface and functions
7 *
8 * @note Copyright (C) Nicolas VIVIEN
9 *
10 * @par Licences
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/version.h>
31 #include <linux/errno.h>
32 #include <linux/slab.h>
33 #include <linux/kref.h>
34 #include <linux/vmalloc.h>
35 #include <linux/usb.h>
36 #include <linux/mm.h>
37 #include <media/v4l2-common.h>
38
39
40 #include "microdia.h"
41 #include "sn9c20x.h"
42
43
44 /* USER DEFINED V4L2-CONTROLS: */
45 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
46 #define V4L2_CID_AUTOEXPOSURE (V4L2_CID_PRIVATE_BASE + 0)
47 #else
48 #define V4L2_CID_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0)
49 #define V4L2_CID_AUTOEXPOSURE (V4L2_CID_PRIVATE_BASE + 1)
50 #endif
51
52 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
53 #include <media/v4l2-ioctl.h>
54 #endif
55
56 static struct file_operations v4l_microdia_fops;
57 /**
58 * @var microdia_controls
59 * List of all V4Lv2 controls supported by the driver
60 */
61 static struct v4l2_queryctrl microdia_controls[] = {
62 {
63 .id = V4L2_CID_BRIGHTNESS,
64 .type = V4L2_CTRL_TYPE_INTEGER,
65 .name = "Brightness",
66 .minimum = 0,
67 .maximum = 0xff00,
68 .step = 1,
69 .default_value = 0x7f00,
70 },
71 {
72 .id = V4L2_CID_WHITENESS,
73 .type = V4L2_CTRL_TYPE_INTEGER,
74 .name = "Whiteness",
75 .minimum = 0,
76 .maximum = 0xff00,
77 .step = 1,
78 .default_value = 0x7f00,
79 },
80 /*
81 {
82 .id = V4L2_CID_SATURATION,
83 .type = V4L2_CTRL_TYPE_INTEGER,
84 .name = "Saturation",
85 .minimum = 0,
86 .maximum = 0xff00,
87 .step = 1,
88 .default_value = 0x7f00,
89 },
90 */
91 {
92 .id = V4L2_CID_CONTRAST,
93 .type = V4L2_CTRL_TYPE_INTEGER,
94 .name = "Contrast",
95 .minimum = 0,
96 .maximum = 0xff00,
97 .step = 1,
98 .default_value = 0x0000,
99 },
100 {
101 .id = V4L2_CID_EXPOSURE,
102 .type = V4L2_CTRL_TYPE_INTEGER,
103 .name = "Exposure",
104 .minimum = 0,
105 .maximum = 0xff00,
106 .step = 1,
107 .default_value = 0x1000,
108 },
109 {
110 .id = V4L2_CID_HFLIP,
111 .type = V4L2_CTRL_TYPE_BOOLEAN,
112 .name = "Horizontal flip",
113 .minimum = 0,
114 .maximum = 1,
115 .step = 1,
116 .default_value = 0,
117 },
118 {
119 .id = V4L2_CID_VFLIP,
120 .type = V4L2_CTRL_TYPE_BOOLEAN,
121 .name = "Vertical flip",
122 .minimum = 0,
123 .maximum = 1,
124 .step = 1,
125 .default_value = 0,
126 },
127 {
128 .id = V4L2_CID_SHARPNESS,
129 .type = V4L2_CTRL_TYPE_INTEGER,
130 .name = "Sharpness",
131 .minimum = 0,
132 .maximum = 0x3f,
133 .step = 1,
134 .default_value = 0x1f,
135 },
136 {
137 .id = V4L2_CID_RED_BALANCE,
138 .type = V4L2_CTRL_TYPE_INTEGER,
139 .name = "Red Balance",
140 .minimum = 0,
141 .maximum = 0x7f,
142 .step = 1,
143 .default_value = 0x20,
144 },
145 {
146 .id = V4L2_CID_BLUE_BALANCE,
147 .type = V4L2_CTRL_TYPE_INTEGER,
148 .name = "Blue Balance",
149 .minimum = 0,
150 .maximum = 0x7f,
151 .step = 1,
152 .default_value = 0x20,
153 },
154 {
155 .id = V4L2_CID_AUTOEXPOSURE,
156 .type = V4L2_CTRL_TYPE_BOOLEAN,
157 .name = "Automatic exposure control",
158 .minimum = 0,
159 .maximum = 1,
160 .step = 1,
161 .default_value = 0,
162 },
163 {
164 .id = V4L2_CID_AUTO_WHITE_BALANCE,
165 .type = V4L2_CTRL_TYPE_BOOLEAN,
166 .name = "Automatic whitbalance control",
167 .minimum = 0,
168 .maximum = 1,
169 .step = 1,
170 .default_value = 0,
171 },
172 };
173
174 void v4l_add_jpegheader(struct usb_microdia *dev, __u8 *buffer,
175 __u32 buffer_size)
176 {
177 __u8 jpeg_header[589] = {
178 0xff, 0xd8, 0xff, 0xdb, 0x00, 0x84, 0x00, 0x06, 0x04, 0x05,
179 0x06, 0x05, 0x04, 0x06, 0x06, 0x05, 0x06, 0x07, 0x07, 0x06,
180 0x08, 0x0a, 0x10, 0x0a, 0x0a, 0x09, 0x09, 0x0a, 0x14, 0x0e,
181 0x0f, 0x0c, 0x10, 0x17, 0x14, 0x18, 0x18, 0x17, 0x14, 0x16,
182 0x16, 0x1a, 0x1d, 0x25, 0x1f, 0x1a, 0x1b, 0x23, 0x1c, 0x16,
183 0x16, 0x20, 0x2c, 0x20, 0x23, 0x26, 0x27, 0x29, 0x2a, 0x29,
184 0x19, 0x1f, 0x2d, 0x30, 0x2d, 0x28, 0x30, 0x25, 0x28, 0x29,
185 0x28, 0x01, 0x07, 0x07, 0x07, 0x0a, 0x08, 0x0a, 0x13, 0x0a,
186 0x0a, 0x13, 0x28, 0x1a, 0x16, 0x1a, 0x28, 0x28, 0x28, 0x28,
187 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
188 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
189 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
190 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
191 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0xff, 0xc4, 0x01, 0xa2,
192 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02,
194 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01,
195 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
196 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
197 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x10, 0x00,
198 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04,
199 0x04, 0x00, 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04,
200 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
201 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23,
202 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62,
203 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25,
204 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38,
205 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
206 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64,
207 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
208 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
209 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
210 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa,
211 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
212 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3,
213 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 0xe3,
214 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3,
215 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02,
216 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
217 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
218 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
219 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1,
220 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1,
221 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19,
222 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
223 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
224 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64,
225 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
226 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
227 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
228 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
229 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba,
230 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
231 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3,
232 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4,
233 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xff, 0xc0, 0x00, 0x11,
234 0x08, 0x01, 0xe0, 0x02, 0x80, 0x03, 0x01, 0x21, 0x00, 0x02,
235 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xda, 0x00, 0x0c, 0x03,
236 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
237 };
238 __u8 qtable1[128] = {
239 0x0d, 0x08, 0x08, 0x0d, 0x08, 0x08, 0x0d, 0x0d,
240 0x0d, 0x0d, 0x11, 0x0d, 0x0d, 0x11, 0x15, 0x21,
241 0x15, 0x15, 0x11, 0x11, 0x15, 0x2a, 0x1d, 0x1d,
242 0x19, 0x21, 0x32, 0x2a, 0x32, 0x32, 0x2e, 0x2a,
243 0x2e, 0x2e, 0x36, 0x3a, 0x4b, 0x43, 0x36, 0x3a,
244 0x47, 0x3a, 0x2e, 0x2e, 0x43, 0x5c, 0x43, 0x47,
245 0x4f, 0x54, 0x58, 0x58, 0x58, 0x32, 0x3f, 0x60,
246 0x64, 0x5c, 0x54, 0x64, 0x4b, 0x54, 0x58, 0x54,
247 0x0d, 0x11, 0x11, 0x15, 0x11, 0x15, 0x26, 0x15,
248 0x15, 0x26, 0x54, 0x36, 0x2e, 0x36, 0x54, 0x54,
249 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54,
250 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54,
251 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54,
252 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54,
253 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54,
254 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54, 0x54
255 };
256
257 jpeg_header[6] = 0x00;
258 jpeg_header[71] = 0x01;
259 memcpy(jpeg_header + 7, qtable1, 64);
260 memcpy(jpeg_header + 8 + 64, qtable1+64, 64);
261 jpeg_header[564] = dev->vsettings.format.width & 0xFF;
262 jpeg_header[563] = (dev->vsettings.format.width >> 8) & 0xFF;
263 jpeg_header[562] = dev->vsettings.format.height & 0xFF;
264 jpeg_header[561] = (dev->vsettings.format.height >> 8) & 0xFF;
265 jpeg_header[567] = 0x21;
266
267 memmove(buffer+589, buffer, buffer_size);
268 memcpy(buffer, jpeg_header, 589);
269 }
270 /**
271 * @brief Get V4L privileges
272 *
273 * @param file
274 *
275 * @return 0 or negative error code
276 *
277 */
278 int v4l_get_privileges(struct file *file)
279 {
280 struct usb_microdia *dev;
281 int ret = 0;
282
283 dev = video_get_drvdata(video_devdata(file));
284
285 if (dev->owner == file)
286 return 0;
287
288 mutex_lock(&open_lock);
289 if (dev->owner != NULL) {
290 ret = -EBUSY;
291 goto done;
292 }
293 dev->owner = file;
294 done:
295 mutex_unlock(&open_lock);
296 return ret;
297 }
298
299 /**
300 * @brief Check whether there are V4L privileges
301 *
302 * @param file
303 *
304 * @return 0 or 1
305 *
306 */
307 int v4l_has_privileges(struct file *file)
308 {
309 struct usb_microdia *dev;
310 int ret = 0;
311
312 dev = video_get_drvdata(video_devdata(file));
313
314 if (dev->owner == file)
315 ret = 1;
316
317 return ret;
318 }
319
320 /**
321 * @brief Drop V4L privileges
322 *
323 * @param file
324 *
325 */
326 void v4l_drop_privileges(struct file *file)
327 {
328 struct usb_microdia *dev;
329
330 dev = video_get_drvdata(video_devdata(file));
331
332 if (dev->owner == file)
333 dev->owner = NULL;
334 }
335
336 /**
337 * @brief Enable video stream
338 *
339 * @param dev Pointer to device structure
340 * @param mode Mode for video stream
341 *
342 * @returns 0 or negative error value
343 *
344 */
345 int v4l2_enable_video(struct usb_microdia *dev, int mode)
346 {
347 int ret;
348
349 if (mode == MICRODIA_MODE_IDLE) {
350 dev_microdia_enable_video(dev, 0);
351 usb_microdia_uninit_urbs(dev);
352 microdia_queue_enable(&dev->queue, 0);
353 dev->mode = mode;
354 return 0;
355 }
356
357 if (dev->mode != MICRODIA_MODE_IDLE)
358 return -EBUSY;
359
360 if (microdia_queue_enable(&dev->queue, 1) < 0)
361 return -EBUSY;
362
363 ret = usb_microdia_init_urbs(dev);
364
365 if (ret)
366 return ret;
367
368 dev_microdia_enable_video(dev, 1);
369 dev_microdia_camera_settings(dev);
370 dev->queue.flags &= ~MICRODIA_QUEUE_DROP_INCOMPLETE;
371 dev->mode = mode;
372
373 return 0;
374 }
375
376 /**
377 * @param inode Pointer on an inode
378 * @param fp File pointer
379 *
380 * @returns 0 if all is OK
381 *
382 * @brief Open the video device
383 *
384 * This function permits to open a video device (/dev/videoX)
385 */
386 static int v4l_microdia_open(struct inode *inode, struct file *fp)
387 {
388 int ret = 0;
389
390 struct usb_microdia *dev;
391 struct video_device *vdev;
392
393 mutex_lock(&open_lock);
394
395 vdev = video_devdata(fp);
396 dev = video_get_drvdata(video_devdata(fp));
397
398 fp->private_data = vdev;
399
400 kref_get(&dev->vopen);
401
402 mutex_unlock(&open_lock);
403 return ret;
404 }
405
406
407 /**
408 * @param inode Pointer on inode
409 * @param fp File pointer
410 *
411 * @returns 0 if all is OK
412 *
413 * @brief Release an opened file.
414 *
415 * This function permits to release an opened file with the 'open' method.
416 */
417 static int v4l_microdia_release(struct inode *inode, struct file *fp)
418 {
419 struct usb_microdia *dev;
420 struct video_device *vdev;
421
422 mutex_lock(&open_lock);
423
424 vdev = video_devdata(fp);
425 dev = video_get_drvdata(video_devdata(fp));
426
427 if (v4l_has_privileges(fp)) {
428 v4l2_enable_video(dev, MICRODIA_MODE_IDLE);
429
430 mutex_lock(&dev->queue.mutex);
431 microdia_free_buffers(&dev->queue);
432 mutex_unlock(&dev->queue.mutex);
433 }
434
435 v4l_drop_privileges(fp);
436
437 kref_put(&dev->vopen, usb_microdia_delete);
438
439 mutex_unlock(&open_lock);
440 return 0;
441 }
442
443
444 /**
445 * @param fp File pointer
446 *
447 * @retval buf Buffer in user space
448 * @retval count
449 * @retval f_pos
450 *
451 * @returns Count value
452 *
453 * @brief Read the video device
454 *
455 * This function is called by the application is reading the video device.
456 */
457 static ssize_t v4l_microdia_read(struct file *fp, char __user *buf,
458 size_t count, loff_t *f_pos)
459 {
460 int i, ret;
461 int nbuffers;
462 struct v4l2_buffer buffer;
463 struct usb_microdia *dev;
464
465 dev = video_get_drvdata(video_devdata(fp));
466
467 ret = v4l_get_privileges(fp);
468 if (ret < 0)
469 return ret;
470
471 if (dev->mode != MICRODIA_MODE_IDLE &&
472 dev->mode != MICRODIA_MODE_READ)
473 return -EBUSY;
474
475 buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
476 buffer.memory = V4L2_MEMORY_MMAP;
477 if (dev->mode == MICRODIA_MODE_IDLE) {
478 nbuffers = microdia_alloc_buffers(&dev->queue, 2,
479 dev->vsettings.format.sizeimage);
480 if (nbuffers < 0)
481 return nbuffers;
482
483 for (i = 0; i < nbuffers; i++) {
484 buffer = dev->queue.buffer[i].buf;
485 microdia_queue_buffer(&dev->queue, &buffer);
486 }
487
488 ret = v4l2_enable_video(dev, MICRODIA_MODE_READ);
489 if (ret < 0)
490 return ret;
491 }
492
493 if (dev->queue.read_buffer == NULL) {
494 ret = microdia_dequeue_buffer(&dev->queue, &buffer,
495 fp->f_flags & O_NONBLOCK);
496 if (ret < 0)
497 return ret;
498 dev->queue.read_buffer = &dev->queue.buffer[buffer.index];
499 } else {
500 buffer = dev->queue.read_buffer->buf;
501 }
502
503 count = min((size_t)(buffer.bytesused - *f_pos), count);
504 if (copy_to_user(buf, dev->queue.mem + buffer.m.offset + *f_pos, count))
505 return -EFAULT;
506
507 *f_pos += count;
508 if (*f_pos >= buffer.bytesused) {
509 dev->queue.read_buffer = NULL;
510 microdia_queue_buffer(&dev->queue, &buffer);
511 *f_pos = 0;
512 }
513 return count;
514 }
515
516
517 /**
518 * @param fp File pointer
519 * @param wait
520 *
521 * @returns 0 if all is OK
522 *
523 * @brief Polling function
524 */
525 static unsigned int v4l_microdia_poll(struct file *fp, poll_table *wait)
526 {
527 struct usb_microdia *dev;
528 struct video_device *vdev;
529
530 vdev = video_devdata(fp);
531 dev = video_get_drvdata(video_devdata(fp));
532
533 UDIA_STREAM("Poll\n");
534
535 if (vdev == NULL || dev == NULL)
536 return -EFAULT;
537
538 return microdia_queue_poll(&dev->queue, fp, wait);
539 }
540
541 /**
542 * @param vma
543 *
544 */
545 static void microdia_vm_open(struct vm_area_struct *vma)
546 {
547 struct microdia_buffer *buffer = vma->vm_private_data;
548 buffer->vma_use_count++;
549
550 }
551
552 /**
553 * @param vma
554 *
555 */
556 static void microdia_vm_close(struct vm_area_struct *vma)
557 {
558 struct microdia_buffer *buffer = vma->vm_private_data;
559 buffer->vma_use_count--;
560 }
561
562 struct vm_operations_struct microdia_vm_ops = {
563 .open = microdia_vm_open,
564 .close = microdia_vm_close
565 };
566
567 /**
568 * @param fp File pointer
569 * @param vma VMA structure
570 *
571 * @returns 0 if all is OK
572 *
573 * @brief Memory map
574 *
575 * This function permits to map a memory space.
576 */
577 static int v4l_microdia_mmap(struct file *fp, struct vm_area_struct *vma)
578 {
579 struct page *page;
580 unsigned long addr, start, size;
581 unsigned int i;
582 int ret = 0;
583
584 struct usb_microdia *dev;
585 struct video_device *vdev;
586 struct microdia_buffer *buffer = NULL;
587
588 vdev = video_devdata(fp);
589 dev = video_get_drvdata(video_devdata(fp));
590
591 UDIA_STREAM("mmap\n");
592
593 start = vma->vm_start;
594 size = vma->vm_end - vma->vm_start;
595
596 mutex_lock(&dev->queue.mutex);
597
598 for (i = 0; i < dev->queue.count; ++i) {
599 buffer = &dev->queue.buffer[i];
600 if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
601 break;
602 }
603
604 if (i == dev->queue.count || size != dev->queue.buf_size) {
605 ret = -EINVAL;
606 goto done;
607 }
608
609 vma->vm_flags |= VM_IO;
610
611 addr = (unsigned long)dev->queue.mem + buffer->buf.m.offset;
612 while (size > 0) {
613 page = vmalloc_to_page((void *)addr);
614 ret = vm_insert_page(vma, start, page);
615 if (ret < 0)
616 goto done;
617
618 start += PAGE_SIZE;
619 addr += PAGE_SIZE;
620 size -= PAGE_SIZE;
621 }
622
623 vma->vm_ops = &microdia_vm_ops;
624 vma->vm_private_data = buffer;
625 microdia_vm_open(vma);
626 done:
627 mutex_unlock(&dev->queue.mutex);
628 return ret;
629 }
630
631 /**
632 * @param file
633 * @param priv
634 * @param cap
635 *
636 * @return 0
637 *
638 */
639 int microdia_vidioc_querycap(struct file *file, void *priv,
640 struct v4l2_capability *cap)
641 {
642 struct usb_microdia *dev;
643
644 dev = video_get_drvdata(priv);
645
646 UDIA_DEBUG("VIDIOC_QUERYCAP\n");
647
648 strlcpy(cap->driver, "microdia", sizeof(cap->driver));
649 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING
650 | V4L2_CAP_READWRITE;
651 cap->version = (__u32) DRIVER_VERSION_NUM,
652 strlcpy(cap->card, dev->vdev->name, sizeof(cap->card));
653
654 if (usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)) < 0)
655 strlcpy(cap->bus_info, dev->vdev->name, sizeof(cap->bus_info));
656 return 0;
657 }
658
659 /**
660 * @param file
661 * @param priv
662 * @param input
663 *
664 * @return 0 or negative error code
665 *
666 */
667 int microdia_vidioc_enum_input(struct file *file, void *priv,
668 struct v4l2_input *input)
669 {
670 UDIA_DEBUG("VIDIOC_ENUMINPUT %d\n", input->index);
671
672 if (input->index)
673 return -EINVAL;
674
675 strlcpy(input->name, "Webcam", sizeof(input->name));
676 input->type = V4L2_INPUT_TYPE_CAMERA;
677 input->std = 0;
678
679 return 0;
680 }
681
682 /**
683 * @param file
684 * @param priv
685 * @param index
686 *
687 * @return 0 or negative error code
688 *
689 */
690 int microdia_vidioc_g_input(struct file *file, void *priv, unsigned int *index)
691 {
692 UDIA_DEBUG("GET INPUT %d\n", *index);
693
694 if (index)
695 return -EINVAL;
696
697 return 0;
698 }
699
700 /**
701 * @param file
702 * @param priv
703 * @param index
704 *
705 * @return 0 or negative error code
706 *
707 */
708 int microdia_vidioc_s_input(struct file *file, void *priv, unsigned int index)
709 {
710 UDIA_DEBUG("SET INPUT %d\n", index);
711
712 if (v4l_get_privileges(file) < 0)
713 return -EBUSY;
714
715 if (index != 0)
716 return -EINVAL;
717
718 return 0;
719 }
720
721 /**
722 * @param file
723 * @param priv
724 * @param ctrl
725 *
726 * @return 0 or negative error code
727 *
728 */
729 int microdia_vidioc_queryctrl(struct file *file, void *priv,
730 struct v4l2_queryctrl *ctrl)
731 {
732 int i;
733 int nbr;
734
735 UDIA_DEBUG("VIDIOC_QUERYCTRL id = %d\n", ctrl->id);
736
737 nbr = sizeof(microdia_controls)/sizeof(struct v4l2_queryctrl);
738
739 for (i = 0; i < nbr; i++) {
740 if (microdia_controls[i].id == ctrl->id) {
741 UDIA_DEBUG("VIDIOC_QUERYCTRL found\n");
742 memcpy(ctrl, &microdia_controls[i],
743 sizeof(struct v4l2_queryctrl));
744 break;
745 }
746 }
747
748 if (i >= nbr)
749 return -EINVAL;
750
751 return 0;
752 }
753
754 /**
755 * @param file
756 * @param priv
757 * @param ctrl
758 *
759 * @return 0 or negative error code
760 *
761 */
762 int microdia_vidioc_g_ctrl(struct file *file, void *priv,
763 struct v4l2_control *ctrl)
764 {
765 struct usb_microdia *dev;
766
767 dev = video_get_drvdata(priv);
768
769 UDIA_DEBUG("GET CTRL id=%d\n", ctrl->id);
770
771 switch (ctrl->id) {
772 case V4L2_CID_BRIGHTNESS:
773 ctrl->value = dev->vsettings.brightness;
774 break;
775
776 case V4L2_CID_EXPOSURE:
777 ctrl->value = dev->vsettings.exposure;
778 break;
779
780 case V4L2_CID_WHITENESS:
781 ctrl->value = dev->vsettings.whiteness;
782 break;
783 /*
784 case V4L2_CID_SATURATION:
785 ctrl->value = dev->vsettings.colour;
786 break;
787 */
788 case V4L2_CID_CONTRAST:
789 ctrl->value = dev->vsettings.contrast;
790 break;
791
792 case V4L2_CID_HFLIP:
793 ctrl->value = dev->vsettings.hflip;
794 break;
795
796 case V4L2_CID_VFLIP:
797 ctrl->value = dev->vsettings.vflip;
798 break;
799
800 case V4L2_CID_SHARPNESS:
801 ctrl->value = dev->vsettings.sharpness;
802 break;
803
804 case V4L2_CID_RED_BALANCE:
805 ctrl->value = dev->vsettings.rgb_gain[0];
806 break;
807
808 case V4L2_CID_BLUE_BALANCE:
809 ctrl->value = dev->vsettings.rgb_gain[3];
810 break;
811
812 case V4L2_CID_AUTOEXPOSURE:
813 ctrl->value = dev->vsettings.auto_exposure;
814 break;
815
816 case V4L2_CID_AUTO_WHITE_BALANCE:
817 ctrl->value = dev->vsettings.auto_whitebalance;
818 break;
819
820 default:
821 return -EINVAL;
822 }
823 return 0;
824 }
825
826 /**
827 * @brief Apply v4l2 settings on camera
828 *
829 * @param file
830 * @param priv
831 * @param ctrl V4L2 control structure
832 *
833 * @returns 0 or negative error value
834 *
835 */
836 int microdia_vidioc_s_ctrl(struct file *file, void *priv,
837 struct v4l2_control *ctrl)
838 {
839 struct usb_microdia *dev;
840
841 dev = video_get_drvdata(priv);
842
843 UDIA_DEBUG("SET CTRL id=%d value=%d\n", ctrl->id, ctrl->value);
844
845 switch (ctrl->id) {
846 case V4L2_CID_BRIGHTNESS:
847 dev->vsettings.brightness = (0xff00 & ctrl->value);
848 dev_microdia_camera_set_brightness(dev);
849 break;
850
851 case V4L2_CID_EXPOSURE:
852 dev->vsettings.exposure = (0xff00 & ctrl->value);
853 dev_microdia_camera_set_exposure(dev);
854 break;
855
856 case V4L2_CID_WHITENESS:
857 dev->vsettings.whiteness = (0xff00 & ctrl->value);
858 dev_microdia_camera_set_gamma(dev);
859 break;
860 /*
861 case V4L2_CID_SATURATION:
862 dev->vsettings.colour = (0xff00 & ctrl->value);
863 break;
864 */
865 case V4L2_CID_CONTRAST:
866 dev->vsettings.contrast = (0xff00 & ctrl->value);
867 dev_microdia_camera_set_contrast(dev);
868 break;
869
870 case V4L2_CID_HFLIP:
871 dev->vsettings.hflip = ctrl->value;
872 dev_microdia_camera_set_hvflip(dev);
873 break;
874
875 case V4L2_CID_VFLIP:
876 dev->vsettings.vflip = ctrl->value;
877 dev_microdia_camera_set_hvflip(dev);
878 break;
879
880 case V4L2_CID_SHARPNESS:
881 dev->vsettings.sharpness = ctrl->value;
882 dev_microdia_camera_set_sharpness(dev);
883 break;
884
885 case V4L2_CID_RED_BALANCE:
886 dev->vsettings.rgb_gain[0] = ctrl->value;
887 dev_microdia_camera_set_rgb_gain(dev);
888 break;
889
890 case V4L2_CID_BLUE_BALANCE:
891 dev->vsettings.rgb_gain[3] = ctrl->value;
892 dev_microdia_camera_set_rgb_gain(dev);
893 break;
894
895 case V4L2_CID_AUTOEXPOSURE:
896 dev->vsettings.auto_exposure = ctrl->value;
897 dev_microdia_camera_set_auto_exposure(dev);
898 break;
899
900 case V4L2_CID_AUTO_WHITE_BALANCE:
901 dev->vsettings.auto_whitebalance = ctrl->value;
902 dev_microdia_camera_set_auto_whitebalance(dev);
903 break;
904
905 default:
906 return -EINVAL;
907 }
908
909 return 0;
910 }
911
912 /**
913 * @param file
914 * @param priv
915 * @param fmt
916 *
917 * @return 0 or negative error code
918 *
919 */
920 int microdia_vidioc_enum_fmt_cap(struct file *file, void *priv,
921 struct v4l2_fmtdesc *fmt)
922 {
923 struct usb_microdia *dev;
924
925 dev = video_get_drvdata(priv);
926
927 UDIA_DEBUG("VIDIOC_ENUM_FMT %d\n", fmt->index);
928
929 if (fmt->index >= dev->camera.nfmts)
930 return -EINVAL;
931
932 fmt->flags = 0;
933 fmt->pixelformat = dev->camera.fmts[fmt->index].pix_fmt;
934 memcpy(fmt->description, dev->camera.fmts[fmt->index].desc, 32);
935
936 return 0;
937 }
938
939 /**
940 * @param file
941 * @param priv
942 * @param fmt
943 *
944 * @return 0 or negative error code
945 *
946 */
947 int microdia_vidioc_try_fmt_cap(struct file *file, void *priv,
948 struct v4l2_format *fmt)
949 {
950 int index;
951 struct usb_microdia *dev;
952
953 dev = video_get_drvdata(priv);
954 UDIA_DEBUG("TRY FMT %d\n", fmt->type);
955
956 /* when this code is used prevents mplayer from setting outfmt
957 if(fmt->fmt.pix.field != V4L2_FIELD_NONE)
958 return -EINVAL;
959 */
960
961 for (index = 0; index < dev->camera.nfmts; index++)
962 if (dev->camera.fmts[index].pix_fmt == fmt->fmt.pix.pixelformat)
963 break;
964
965 if (index >= dev->camera.nfmts)
966 return -EINVAL;
967
968 sn9c20x_get_closest_resolution(dev, &fmt->fmt.pix.width,
969 &fmt->fmt.pix.height);
970
971 fmt->fmt.pix.bytesperline = fmt->fmt.pix.width *
972 dev->camera.fmts[index].depth / 8;
973
974 fmt->fmt.pix.sizeimage = fmt->fmt.pix.height *
975 fmt->fmt.pix.bytesperline;
976
977 fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
978 fmt->fmt.pix.priv = index;
979
980 return 0;
981 }
982
983 /**
984 * @param file
985 * @param priv
986 * @param fmt
987 *
988 * @return 0
989 *
990 */
991 int microdia_vidioc_g_fmt_cap(struct file *file, void *priv,
992 struct v4l2_format *fmt)
993 {
994 struct usb_microdia *dev;
995
996 dev = video_get_drvdata(priv);
997
998 UDIA_DEBUG("GET FMT %d\n", fmt->type);
999
1000 memcpy(&(fmt->fmt.pix), &(dev->vsettings.format), sizeof(fmt->fmt.pix));
1001
1002
1003 return 0;
1004 }
1005
1006 /**
1007 * @param file
1008 * @param priv
1009 * @param fmt
1010 *
1011 * @return 0 or negative error code
1012 *
1013 */
1014 int microdia_vidioc_s_fmt_cap(struct file *file, void *priv,
1015 struct v4l2_format *fmt)
1016 {
1017 struct usb_microdia *dev;
1018 int ret;
1019
1020 dev = video_get_drvdata(priv);
1021
1022 UDIA_DEBUG("SET FMT %d : %d\n", fmt->type, fmt->fmt.pix.pixelformat);
1023
1024 if (v4l_get_privileges(file) < 0)
1025 return -EBUSY;
1026
1027 if (microdia_queue_streaming(&dev->queue))
1028 return -EBUSY;
1029
1030 ret = microdia_vidioc_try_fmt_cap(file, priv, fmt);
1031 if (ret)
1032 return -EINVAL;
1033
1034 sn9c20x_set_resolution(dev, fmt->fmt.pix.width, fmt->fmt.pix.height);
1035 dev->camera.fmts[fmt->fmt.pix.priv].set_format(dev);
1036 memcpy(&(dev->vsettings.format), &(fmt->fmt.pix), sizeof(fmt->fmt.pix));
1037
1038 return 0;
1039 }
1040
1041 /**
1042 * @param file
1043 * @param priv
1044 * @param request
1045 *
1046 * @return 0 or negative error code
1047 *
1048 */
1049 int microdia_vidioc_reqbufs(struct file *file, void *priv,
1050 struct v4l2_requestbuffers *request)
1051 {
1052 int ret = 0;
1053 struct usb_microdia *dev;
1054
1055 dev = video_get_drvdata(priv);
1056
1057 if (v4l_get_privileges(file) < 0) {
1058 ret = -EBUSY;
1059 goto done;
1060 }
1061
1062 if (request->memory != V4L2_MEMORY_MMAP ||
1063 request->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1064 ret = -EINVAL;
1065 goto done;
1066 }
1067
1068 if (microdia_queue_streaming(&dev->queue)) {
1069 ret = -EBUSY;
1070 goto done;
1071 }
1072
1073 ret = microdia_alloc_buffers(&dev->queue, request->count,
1074 dev->vsettings.format.sizeimage);
1075 if (ret < 0)
1076 goto done;
1077
1078 request->count = ret;
1079 ret = 0;
1080 UDIA_INFO("Buffers Allocated %d\n", request->count);
1081 done:
1082 return ret;
1083 }
1084
1085 /**
1086 * @param file
1087 * @param priv
1088 * @param buffer
1089 *
1090 * @return 0 or negative error code
1091 *
1092 */
1093 int microdia_vidioc_querybuf(struct file *file, void *priv,
1094 struct v4l2_buffer *buffer)
1095 {
1096 struct usb_microdia *dev;
1097
1098 dev = video_get_drvdata(priv);
1099
1100 UDIA_DEBUG("QUERY BUFFERS %d %d\n", buffer->index, dev->queue.count);
1101
1102 if (buffer->memory != V4L2_MEMORY_MMAP ||
1103 buffer->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1104 return -EINVAL;
1105
1106 if (!v4l_has_privileges(file))
1107 return -EBUSY;
1108
1109 return microdia_query_buffer(&dev->queue, buffer);
1110 }
1111
1112 /**
1113 * @param file
1114 * @param priv
1115 * @param buffer
1116 *
1117 * @return 0 or negative error code
1118 *
1119 */
1120 int microdia_vidioc_qbuf(struct file *file, void *priv,
1121 struct v4l2_buffer *buffer)
1122 {
1123 struct usb_microdia *dev;
1124
1125 dev = video_get_drvdata(priv);
1126
1127 UDIA_DEBUG("VIDIOC_QBUF\n");
1128
1129 if (!v4l_has_privileges(file))
1130 return -EBUSY;
1131
1132 return microdia_queue_buffer(&dev->queue, buffer);
1133 }
1134
1135 /**
1136 * @param file
1137 * @param priv
1138 * @param buffer
1139 *
1140 * @return 0 or negative error code
1141 *
1142 */
1143 int microdia_vidioc_dqbuf(struct file *file, void *priv,
1144 struct v4l2_buffer *buffer)
1145 {
1146 struct usb_microdia *dev;
1147 int ret = 0;
1148
1149 dev = video_get_drvdata(priv);
1150
1151 UDIA_DEBUG("VIDIOC_DQBUF\n");
1152
1153 if (!v4l_has_privileges(file))
1154 return -EBUSY;
1155
1156 ret = microdia_dequeue_buffer(&dev->queue, buffer,
1157 file->f_flags & O_NONBLOCK);
1158 if (ret < 0)
1159 return ret;
1160
1161 if (dev->vsettings.format.pixelformat == V4L2_PIX_FMT_JPEG) {
1162 UDIA_INFO("Adding JPEG Header\n");
1163 v4l_add_jpegheader(dev, dev->queue.mem + buffer->m.offset,
1164 buffer->bytesused);
1165 buffer->bytesused += 589;
1166 }
1167
1168 return ret;
1169 }
1170
1171 /**
1172 * @param file
1173 * @param priv
1174 * @param type
1175 *
1176 * @return 0 or negative error code
1177 *
1178 */
1179 int microdia_vidioc_streamon(struct file *file, void *priv,
1180 enum v4l2_buf_type type)
1181 {
1182 struct usb_microdia *dev;
1183
1184 dev = video_get_drvdata(priv);
1185
1186 UDIA_DEBUG("VIDIOC_STREAMON\n");
1187
1188 if (!v4l_has_privileges(file))
1189 return -EBUSY;
1190
1191 if (dev->mode != MICRODIA_MODE_IDLE)
1192 return -EBUSY;
1193
1194 return v4l2_enable_video(dev, MICRODIA_MODE_STREAM);
1195 }
1196
1197 /**
1198 * @param file
1199 * @param priv
1200 * @param type
1201 *
1202 * @return 0 or negative error code
1203 *
1204 */
1205 int microdia_vidioc_streamoff(struct file *file, void *priv,
1206 enum v4l2_buf_type type)
1207 {
1208 struct usb_microdia *dev;
1209
1210 dev = video_get_drvdata(priv);
1211
1212 UDIA_DEBUG("VIDIOC_STREAMOFF\n");
1213
1214 if (!v4l_has_privileges(file))
1215 return -EBUSY;
1216
1217 return v4l2_enable_video(dev, MICRODIA_MODE_IDLE);
1218 }
1219
1220 /**
1221 * @param file
1222 * @param priv
1223 * @param param
1224 *
1225 * @return 0 or negative error code
1226 *
1227 */
1228 int microdia_vidioc_g_param(struct file *file, void *priv,
1229 struct v4l2_streamparm *param)
1230 {
1231 struct usb_microdia *dev;
1232
1233
1234 dev = video_get_drvdata(priv);
1235
1236 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1237 return -EINVAL;
1238
1239 param->parm.capture.capability = 0;
1240 param->parm.capture.capturemode = 0;
1241 param->parm.capture.timeperframe.numerator = 1;
1242 param->parm.capture.timeperframe.denominator = 30;
1243 param->parm.capture.readbuffers = 2;
1244 param->parm.capture.extendedmode = 0;
1245
1246 return 0;
1247 }
1248
1249 /**
1250 * @param file
1251 * @param priv
1252 * @param param
1253 *
1254 * @return 0 or negative error code
1255 *
1256 */
1257 int microdia_vidioc_s_param(struct file *file, void *priv,
1258 struct v4l2_streamparm *param)
1259 {
1260 struct usb_microdia *dev;
1261
1262 dev = video_get_drvdata(priv);
1263
1264 if (v4l_get_privileges(file))
1265 return -EBUSY;
1266
1267 if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1268 return -EINVAL;
1269
1270 return 0;
1271 }
1272
1273 /**
1274 * @param inode Inode pointer
1275 * @param fp File pointer
1276 * @param cmd Command
1277 * @param arg Arguements of the command
1278 *
1279 * @returns 0 if all is OK
1280 *
1281 * @brief Manage IOCTL
1282 *
1283 * This function permits to manage all the IOCTL from the application.
1284 */
1285 static int v4l_microdia_ioctl(struct inode *inode, struct file *fp,
1286 unsigned int cmd, unsigned long arg)
1287 {
1288 int err;
1289 struct usb_microdia *dev;
1290 struct video_device *vdev;
1291
1292 vdev = video_devdata(fp);
1293 dev = video_get_drvdata(video_devdata(fp));
1294
1295 UDIA_DEBUG("v4l_microdia_ioctl %02X\n", (unsigned char) cmd);
1296
1297 if (dev == NULL || vdev == NULL)
1298 return -EFAULT;
1299
1300 err = video_ioctl2(inode, fp, cmd, arg);
1301
1302 return err;
1303 }
1304
1305
1306 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
1307 static const struct v4l2_ioctl_ops microdia_v4l2_ioctl_ops = {
1308 .vidioc_querycap = microdia_vidioc_querycap,
1309 .vidioc_enum_fmt_vid_cap = microdia_vidioc_enum_fmt_cap,
1310 .vidioc_try_fmt_vid_cap = microdia_vidioc_try_fmt_cap,
1311 .vidioc_s_fmt_vid_cap = microdia_vidioc_s_fmt_cap,
1312 .vidioc_g_fmt_vid_cap = microdia_vidioc_g_fmt_cap,
1313 .vidioc_enum_input = microdia_vidioc_enum_input,
1314 .vidioc_g_input = microdia_vidioc_g_input,
1315 .vidioc_s_input = microdia_vidioc_s_input,
1316 .vidioc_streamon = microdia_vidioc_streamon,
1317 .vidioc_streamoff = microdia_vidioc_streamoff,
1318 .vidioc_queryctrl = microdia_vidioc_queryctrl,
1319 .vidioc_g_ctrl = microdia_vidioc_g_ctrl,
1320 .vidioc_s_ctrl = microdia_vidioc_s_ctrl,
1321 .vidioc_g_parm = microdia_vidioc_g_param,
1322 .vidioc_s_parm = microdia_vidioc_s_param,
1323 .vidioc_reqbufs = microdia_vidioc_reqbufs,
1324 .vidioc_qbuf = microdia_vidioc_qbuf,
1325 .vidioc_dqbuf = microdia_vidioc_dqbuf,
1326 .vidioc_querybuf = microdia_vidioc_querybuf,
1327 };
1328 #endif
1329
1330 /**
1331 * @param dev Device structure
1332 *
1333 * @returns 0 if all is OK
1334 *
1335 * @brief Register the video device
1336 *
1337 * This function permits to register the USB device to the video device.
1338 */
1339 int v4l_microdia_register_video_device(struct usb_microdia *dev)
1340 {
1341 int err;
1342
1343 strcpy(dev->vdev->name, DRIVER_DESC);
1344
1345 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
1346 dev->vdev->dev = &dev->interface->dev;
1347 dev->vdev->owner = THIS_MODULE;
1348 dev->vdev->type = VID_TYPE_CAPTURE;
1349 #else
1350 dev->vdev->dev = dev->interface->dev;
1351 #endif
1352 dev->vdev->current_norm = 0;
1353 dev->vdev->tvnorms = 0;
1354 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
1355 dev->vdev->hardware = VID_HARDWARE_MICRODIA;
1356 #endif
1357 dev->vdev->fops = &v4l_microdia_fops;
1358 dev->vdev->release = video_device_release;
1359 dev->vdev->minor = -1;
1360
1361 if (log_level & MICRODIA_DEBUG)
1362 dev->vdev->debug = V4L2_DEBUG_IOCTL_ARG;
1363
1364 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
1365 dev->vdev->vidioc_querycap = microdia_vidioc_querycap;
1366 dev->vdev->vidioc_enum_fmt_cap = microdia_vidioc_enum_fmt_cap;
1367 dev->vdev->vidioc_try_fmt_cap = microdia_vidioc_try_fmt_cap;
1368 dev->vdev->vidioc_s_fmt_cap = microdia_vidioc_s_fmt_cap;
1369 dev->vdev->vidioc_g_fmt_cap = microdia_vidioc_g_fmt_cap;
1370 dev->vdev->vidioc_enum_input = microdia_vidioc_enum_input;
1371 dev->vdev->vidioc_g_input = microdia_vidioc_g_input;
1372 dev->vdev->vidioc_s_input = microdia_vidioc_s_input;
1373 dev->vdev->vidioc_streamon = microdia_vidioc_streamon;
1374 dev->vdev->vidioc_streamoff = microdia_vidioc_streamoff;
1375 dev->vdev->vidioc_queryctrl = microdia_vidioc_queryctrl;
1376 dev->vdev->vidioc_g_ctrl = microdia_vidioc_g_ctrl;
1377 dev->vdev->vidioc_s_ctrl = microdia_vidioc_s_ctrl;
1378 dev->vdev->vidioc_g_parm = microdia_vidioc_g_param;
1379 dev->vdev->vidioc_s_parm = microdia_vidioc_s_param;
1380 dev->vdev->vidioc_reqbufs = microdia_vidioc_reqbufs;
1381 dev->vdev->vidioc_qbuf = microdia_vidioc_qbuf;
1382 dev->vdev->vidioc_dqbuf = microdia_vidioc_dqbuf;
1383 dev->vdev->vidioc_querybuf = microdia_vidioc_querybuf;
1384 #else
1385 dev->vdev->ioctl_ops = &microdia_v4l2_ioctl_ops;
1386 #endif
1387
1388 video_set_drvdata(dev->vdev, dev);
1389
1390 microdia_queue_init(&dev->queue);
1391
1392 err = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1);
1393
1394 if (err)
1395 UDIA_ERROR("Video register fail !\n");
1396 else
1397 UDIA_INFO("Microdia USB 2.0 Webcam is now controlling "
1398 "video device /dev/video%d\n",
1399 dev->vdev->minor);
1400
1401 return err;
1402 }
1403
1404
1405 /**
1406 * @param dev Device structure
1407 *
1408 * @returns 0 if all is OK
1409 *
1410 * @brief Unregister the video device
1411 *
1412 * This function permits to unregister the video device.
1413 */
1414 int v4l_microdia_unregister_video_device(struct usb_microdia *dev)
1415 {
1416 UDIA_INFO("Microdia USB 2.0 Webcam releases control of video "
1417 "device /dev/video%d\n", dev->vdev->minor);
1418
1419 video_set_drvdata(dev->vdev, NULL);
1420 video_unregister_device(dev->vdev);
1421
1422 return 0;
1423 }
1424
1425
1426 /**
1427 * @var v4l_microdia_fops
1428 *
1429 * This variable contains some callback
1430 */
1431 static struct file_operations v4l_microdia_fops = {
1432 .owner = THIS_MODULE,
1433 .open = v4l_microdia_open,
1434 .release = v4l_microdia_release,
1435 .read = v4l_microdia_read,
1436 .poll = v4l_microdia_poll,
1437 .mmap = v4l_microdia_mmap,
1438 .ioctl = v4l_microdia_ioctl,
1439 #ifdef CONFIG_COMPAT
1440 .compat_ioctl = v4l_compat_ioctl32,
1441 #endif
1442 .llseek = no_llseek
1443 };
1444
Microdia : webcam kernel driver, for USB webcams with vendor id 0c45