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V4L/DVB (6006): tuner: move last_div to tuner-simple private data
[wrt350n-kernel.git] / drivers / media / video / usbvision / usbvision-video.c
blob0cb006f2943da5abfb08bc604a25097f18b4665b
1 /*
2 * USB USBVISION Video device driver 0.9.9
3 *
4 *
5 *
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7 *
8 * This module is part of usbvision driver project.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Let's call the version 0.... until compression decoding is completely
25 * implemented.
26 *
27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28 * It was based on USB CPiA driver written by Peter Pregler,
29 * Scott J. Bertin and Johannes Erdfelt
30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32 * Updates to driver completed by Dwaine P. Garden
33 *
34 *
35 * TODO:
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
38 * nt1003 memory.
39 * - Add audio on endpoint 3 for nt1004 chip.
40 * Seems impossible, needs a codec interface. Which one?
41 * - Clean up the driver.
42 * - optimization for performance.
43 * - Add Videotext capability (VBI). Working on it.....
44 * - Check audio for other devices
45 *
46 */
47
48 #include <linux/version.h>
49 #include <linux/kernel.h>
50 #include <linux/list.h>
51 #include <linux/timer.h>
52 #include <linux/slab.h>
53 #include <linux/mm.h>
54 #include <linux/utsname.h>
55 #include <linux/highmem.h>
56 #include <linux/videodev.h>
57 #include <linux/vmalloc.h>
58 #include <linux/module.h>
59 #include <linux/init.h>
60 #include <linux/spinlock.h>
61 #include <asm/io.h>
62 #include <linux/videodev2.h>
63 #include <linux/video_decoder.h>
64 #include <linux/i2c.h>
65
66 #include <media/saa7115.h>
67 #include <media/v4l2-common.h>
68 #include <media/tuner.h>
69 #include <media/audiochip.h>
70
71 #include <linux/moduleparam.h>
72 #include <linux/workqueue.h>
73
74 #ifdef CONFIG_KMOD
75 #include <linux/kmod.h>
76 #endif
77
78 #include "usbvision.h"
79 #include "usbvision-cards.h"
80
81 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
82 Dwaine Garden <DwaineGarden@rogers.com>"
83 #define DRIVER_NAME "usbvision"
84 #define DRIVER_ALIAS "USBVision"
85 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
86 #define DRIVER_LICENSE "GPL"
87 #define USBVISION_DRIVER_VERSION_MAJOR 0
88 #define USBVISION_DRIVER_VERSION_MINOR 9
89 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
90 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
91 USBVISION_DRIVER_VERSION_MINOR,\
92 USBVISION_DRIVER_VERSION_PATCHLEVEL)
93 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
94 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
95 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
96
97 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
98
99
100 #ifdef USBVISION_DEBUG
101 #define PDEBUG(level, fmt, args...) \
102 if (video_debug & (level)) \
103 info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\
104 ## args)
105 #else
106 #define PDEBUG(level, fmt, args...) do {} while(0)
107 #endif
108
109 #define DBG_IO 1<<1
110 #define DBG_PROBE 1<<2
111 #define DBG_MMAP 1<<3
112
113 //String operations
114 #define rmspace(str) while(*str==' ') str++;
115 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
116
117
118 /* sequential number of usbvision device */
119 static int usbvision_nr = 0;
120
121 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
122 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
123 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
124 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
125 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
126 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
127 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
128 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
129 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
130 };
131
132 /* Function prototypes */
133 static void usbvision_release(struct usb_usbvision *usbvision);
134
135 /* Default initalization of device driver parameters */
136 /* Set the default format for ISOC endpoint */
137 static int isocMode = ISOC_MODE_COMPRESS;
138 /* Set the default Debug Mode of the device driver */
139 static int video_debug = 0;
140 /* Set the default device to power on at startup */
141 static int PowerOnAtOpen = 1;
142 /* Sequential Number of Video Device */
143 static int video_nr = -1;
144 /* Sequential Number of Radio Device */
145 static int radio_nr = -1;
146 /* Sequential Number of VBI Device */
147 static int vbi_nr = -1;
148
149 /* Grab parameters for the device driver */
150
151 /* Showing parameters under SYSFS */
152 module_param(isocMode, int, 0444);
153 module_param(video_debug, int, 0444);
154 module_param(PowerOnAtOpen, int, 0444);
155 module_param(video_nr, int, 0444);
156 module_param(radio_nr, int, 0444);
157 module_param(vbi_nr, int, 0444);
158
159 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
160 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
161 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
162 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
163 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
164 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)");
165
166
167 // Misc stuff
168 MODULE_AUTHOR(DRIVER_AUTHOR);
169 MODULE_DESCRIPTION(DRIVER_DESC);
170 MODULE_LICENSE(DRIVER_LICENSE);
171 MODULE_VERSION(USBVISION_VERSION_STRING);
172 MODULE_ALIAS(DRIVER_ALIAS);
173
174
175 /*****************************************************************************/
176 /* SYSFS Code - Copied from the stv680.c usb module. */
177 /* Device information is located at /sys/class/video4linux/video0 */
178 /* Device parameters information is located at /sys/module/usbvision */
179 /* Device USB Information is located at */
180 /* /sys/bus/usb/drivers/USBVision Video Grabber */
181 /*****************************************************************************/
182
183
184 #define YES_NO(x) ((x) ? "Yes" : "No")
185
186 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
187 {
188 struct video_device *vdev =
189 container_of(cd, struct video_device, class_dev);
190 return video_get_drvdata(vdev);
191 }
192
193 static ssize_t show_version(struct class_device *cd, char *buf)
194 {
195 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
196 }
197 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
198
199 static ssize_t show_model(struct class_device *cd, char *buf)
200 {
201 struct video_device *vdev =
202 container_of(cd, struct video_device, class_dev);
203 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
204 return sprintf(buf, "%s\n",
205 usbvision_device_data[usbvision->DevModel].ModelString);
206 }
207 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
208
209 static ssize_t show_hue(struct class_device *cd, char *buf)
210 {
211 struct video_device *vdev =
212 container_of(cd, struct video_device, class_dev);
213 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
214 struct v4l2_control ctrl;
215 ctrl.id = V4L2_CID_HUE;
216 ctrl.value = 0;
217 if(usbvision->user)
218 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
219 return sprintf(buf, "%d\n", ctrl.value);
220 }
221 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
222
223 static ssize_t show_contrast(struct class_device *cd, char *buf)
224 {
225 struct video_device *vdev =
226 container_of(cd, struct video_device, class_dev);
227 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
228 struct v4l2_control ctrl;
229 ctrl.id = V4L2_CID_CONTRAST;
230 ctrl.value = 0;
231 if(usbvision->user)
232 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
233 return sprintf(buf, "%d\n", ctrl.value);
234 }
235 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
236
237 static ssize_t show_brightness(struct class_device *cd, char *buf)
238 {
239 struct video_device *vdev =
240 container_of(cd, struct video_device, class_dev);
241 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
242 struct v4l2_control ctrl;
243 ctrl.id = V4L2_CID_BRIGHTNESS;
244 ctrl.value = 0;
245 if(usbvision->user)
246 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
247 return sprintf(buf, "%d\n", ctrl.value);
248 }
249 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
250
251 static ssize_t show_saturation(struct class_device *cd, char *buf)
252 {
253 struct video_device *vdev =
254 container_of(cd, struct video_device, class_dev);
255 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
256 struct v4l2_control ctrl;
257 ctrl.id = V4L2_CID_SATURATION;
258 ctrl.value = 0;
259 if(usbvision->user)
260 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
261 return sprintf(buf, "%d\n", ctrl.value);
262 }
263 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
264
265 static ssize_t show_streaming(struct class_device *cd, char *buf)
266 {
267 struct video_device *vdev =
268 container_of(cd, struct video_device, class_dev);
269 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
270 return sprintf(buf, "%s\n",
271 YES_NO(usbvision->streaming==Stream_On?1:0));
272 }
273 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
274
275 static ssize_t show_compression(struct class_device *cd, char *buf)
276 {
277 struct video_device *vdev =
278 container_of(cd, struct video_device, class_dev);
279 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
280 return sprintf(buf, "%s\n",
281 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
282 }
283 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
284
285 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
286 {
287 struct video_device *vdev =
288 container_of(cd, struct video_device, class_dev);
289 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
290 return sprintf(buf, "%d\n", usbvision->bridgeType);
291 }
292 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
293
294 static void usbvision_create_sysfs(struct video_device *vdev)
295 {
296 int res;
297 if (!vdev)
298 return;
299 do {
300 res=class_device_create_file(&vdev->class_dev,
301 &class_device_attr_version);
302 if (res<0)
303 break;
304 res=class_device_create_file(&vdev->class_dev,
305 &class_device_attr_model);
306 if (res<0)
307 break;
308 res=class_device_create_file(&vdev->class_dev,
309 &class_device_attr_hue);
310 if (res<0)
311 break;
312 res=class_device_create_file(&vdev->class_dev,
313 &class_device_attr_contrast);
314 if (res<0)
315 break;
316 res=class_device_create_file(&vdev->class_dev,
317 &class_device_attr_brightness);
318 if (res<0)
319 break;
320 res=class_device_create_file(&vdev->class_dev,
321 &class_device_attr_saturation);
322 if (res<0)
323 break;
324 res=class_device_create_file(&vdev->class_dev,
325 &class_device_attr_streaming);
326 if (res<0)
327 break;
328 res=class_device_create_file(&vdev->class_dev,
329 &class_device_attr_compression);
330 if (res<0)
331 break;
332 res=class_device_create_file(&vdev->class_dev,
333 &class_device_attr_bridge);
334 if (res>=0)
335 return;
336 } while (0);
337
338 err("%s error: %d\n", __FUNCTION__, res);
339 }
340
341 static void usbvision_remove_sysfs(struct video_device *vdev)
342 {
343 if (vdev) {
344 class_device_remove_file(&vdev->class_dev,
345 &class_device_attr_version);
346 class_device_remove_file(&vdev->class_dev,
347 &class_device_attr_model);
348 class_device_remove_file(&vdev->class_dev,
349 &class_device_attr_hue);
350 class_device_remove_file(&vdev->class_dev,
351 &class_device_attr_contrast);
352 class_device_remove_file(&vdev->class_dev,
353 &class_device_attr_brightness);
354 class_device_remove_file(&vdev->class_dev,
355 &class_device_attr_saturation);
356 class_device_remove_file(&vdev->class_dev,
357 &class_device_attr_streaming);
358 class_device_remove_file(&vdev->class_dev,
359 &class_device_attr_compression);
360 class_device_remove_file(&vdev->class_dev,
361 &class_device_attr_bridge);
362 }
363 }
364
365
366 /*
367 * usbvision_open()
368 *
369 * This is part of Video 4 Linux API. The driver can be opened by one
370 * client only (checks internal counter 'usbvision->user'). The procedure
371 * then allocates buffers needed for video processing.
372 *
373 */
374 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
375 {
376 struct video_device *dev = video_devdata(file);
377 struct usb_usbvision *usbvision =
378 (struct usb_usbvision *) video_get_drvdata(dev);
379 int errCode = 0;
380
381 PDEBUG(DBG_IO, "open");
382
383
384 usbvision_reset_powerOffTimer(usbvision);
385
386 if (usbvision->user)
387 errCode = -EBUSY;
388 else {
389 /* Allocate memory for the scratch ring buffer */
390 errCode = usbvision_scratch_alloc(usbvision);
391 if (isocMode==ISOC_MODE_COMPRESS) {
392 /* Allocate intermediate decompression buffers
393 only if needed */
394 errCode = usbvision_decompress_alloc(usbvision);
395 }
396 if (errCode) {
397 /* Deallocate all buffers if trouble */
398 usbvision_scratch_free(usbvision);
399 usbvision_decompress_free(usbvision);
400 }
401 }
402
403 /* If so far no errors then we shall start the camera */
404 if (!errCode) {
405 down(&usbvision->lock);
406 if (usbvision->power == 0) {
407 usbvision_power_on(usbvision);
408 usbvision_i2c_register(usbvision);
409 }
410
411 /* Send init sequence only once, it's large! */
412 if (!usbvision->initialized) {
413 int setup_ok = 0;
414 setup_ok = usbvision_setup(usbvision,isocMode);
415 if (setup_ok)
416 usbvision->initialized = 1;
417 else
418 errCode = -EBUSY;
419 }
420
421 if (!errCode) {
422 usbvision_begin_streaming(usbvision);
423 errCode = usbvision_init_isoc(usbvision);
424 /* device must be initialized before isoc transfer */
425 usbvision_muxsel(usbvision,0);
426 usbvision->user++;
427 } else {
428 if (PowerOnAtOpen) {
429 usbvision_i2c_unregister(usbvision);
430 usbvision_power_off(usbvision);
431 usbvision->initialized = 0;
432 }
433 }
434 up(&usbvision->lock);
435 }
436
437 if (errCode) {
438 }
439
440 /* prepare queues */
441 usbvision_empty_framequeues(usbvision);
442
443 PDEBUG(DBG_IO, "success");
444 return errCode;
445 }
446
447 /*
448 * usbvision_v4l2_close()
449 *
450 * This is part of Video 4 Linux API. The procedure
451 * stops streaming and deallocates all buffers that were earlier
452 * allocated in usbvision_v4l2_open().
453 *
454 */
455 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
456 {
457 struct video_device *dev = video_devdata(file);
458 struct usb_usbvision *usbvision =
459 (struct usb_usbvision *) video_get_drvdata(dev);
460
461 PDEBUG(DBG_IO, "close");
462 down(&usbvision->lock);
463
464 usbvision_audio_off(usbvision);
465 usbvision_restart_isoc(usbvision);
466 usbvision_stop_isoc(usbvision);
467
468 usbvision_decompress_free(usbvision);
469 usbvision_frames_free(usbvision);
470 usbvision_empty_framequeues(usbvision);
471 usbvision_scratch_free(usbvision);
472
473 usbvision->user--;
474
475 if (PowerOnAtOpen) {
476 /* power off in a little while
477 to avoid off/on every close/open short sequences */
478 usbvision_set_powerOffTimer(usbvision);
479 usbvision->initialized = 0;
480 }
481
482 up(&usbvision->lock);
483
484 if (usbvision->remove_pending) {
485 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
486 usbvision_release(usbvision);
487 }
488
489 PDEBUG(DBG_IO, "success");
490
491
492 return 0;
493 }
494
495
496 /*
497 * usbvision_ioctl()
498 *
499 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
500 *
501 */
502 #ifdef CONFIG_VIDEO_ADV_DEBUG
503 static int vidioc_g_register (struct file *file, void *priv,
504 struct v4l2_register *reg)
505 {
506 struct video_device *dev = video_devdata(file);
507 struct usb_usbvision *usbvision =
508 (struct usb_usbvision *) video_get_drvdata(dev);
509 int errCode;
510
511 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
512 return -EINVAL;
513 /* NT100x has a 8-bit register space */
514 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
515 if (errCode < 0) {
516 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
517 __FUNCTION__, errCode);
518 return errCode;
519 }
520 reg->val = errCode;
521 return 0;
522 }
523
524 static int vidioc_s_register (struct file *file, void *priv,
525 struct v4l2_register *reg)
526 {
527 struct video_device *dev = video_devdata(file);
528 struct usb_usbvision *usbvision =
529 (struct usb_usbvision *) video_get_drvdata(dev);
530 int errCode;
531
532 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
533 return -EINVAL;
534 /* NT100x has a 8-bit register space */
535 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
536 if (errCode < 0) {
537 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
538 __FUNCTION__, errCode);
539 return errCode;
540 }
541 return 0;
542 }
543 #endif
544
545 static int vidioc_querycap (struct file *file, void *priv,
546 struct v4l2_capability *vc)
547 {
548 struct video_device *dev = video_devdata(file);
549 struct usb_usbvision *usbvision =
550 (struct usb_usbvision *) video_get_drvdata(dev);
551
552 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
553 strlcpy(vc->card,
554 usbvision_device_data[usbvision->DevModel].ModelString,
555 sizeof(vc->card));
556 strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
557 sizeof(vc->bus_info));
558 vc->version = USBVISION_DRIVER_VERSION;
559 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
560 V4L2_CAP_AUDIO |
561 V4L2_CAP_READWRITE |
562 V4L2_CAP_STREAMING |
563 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
564 return 0;
565 }
566
567 static int vidioc_enum_input (struct file *file, void *priv,
568 struct v4l2_input *vi)
569 {
570 struct video_device *dev = video_devdata(file);
571 struct usb_usbvision *usbvision =
572 (struct usb_usbvision *) video_get_drvdata(dev);
573 int chan;
574
575 if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
576 return -EINVAL;
577 if (usbvision->have_tuner) {
578 chan = vi->index;
579 } else {
580 chan = vi->index + 1; /*skip Television string*/
581 }
582 /* Determine the requested input characteristics
583 specific for each usbvision card model */
584 switch(chan) {
585 case 0:
586 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
587 strcpy(vi->name, "White Video Input");
588 } else {
589 strcpy(vi->name, "Television");
590 vi->type = V4L2_INPUT_TYPE_TUNER;
591 vi->audioset = 1;
592 vi->tuner = chan;
593 vi->std = USBVISION_NORMS;
594 }
595 break;
596 case 1:
597 vi->type = V4L2_INPUT_TYPE_CAMERA;
598 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
599 strcpy(vi->name, "Green Video Input");
600 } else {
601 strcpy(vi->name, "Composite Video Input");
602 }
603 vi->std = V4L2_STD_PAL;
604 break;
605 case 2:
606 vi->type = V4L2_INPUT_TYPE_CAMERA;
607 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
608 strcpy(vi->name, "Yellow Video Input");
609 } else {
610 strcpy(vi->name, "S-Video Input");
611 }
612 vi->std = V4L2_STD_PAL;
613 break;
614 case 3:
615 vi->type = V4L2_INPUT_TYPE_CAMERA;
616 strcpy(vi->name, "Red Video Input");
617 vi->std = V4L2_STD_PAL;
618 break;
619 }
620 return 0;
621 }
622
623 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
624 {
625 struct video_device *dev = video_devdata(file);
626 struct usb_usbvision *usbvision =
627 (struct usb_usbvision *) video_get_drvdata(dev);
628
629 *input = usbvision->ctl_input;
630 return 0;
631 }
632
633 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
634 {
635 struct video_device *dev = video_devdata(file);
636 struct usb_usbvision *usbvision =
637 (struct usb_usbvision *) video_get_drvdata(dev);
638
639 if ((input >= usbvision->video_inputs) || (input < 0) )
640 return -EINVAL;
641
642 down(&usbvision->lock);
643 usbvision_muxsel(usbvision, input);
644 usbvision_set_input(usbvision);
645 usbvision_set_output(usbvision,
646 usbvision->curwidth,
647 usbvision->curheight);
648 up(&usbvision->lock);
649 return 0;
650 }
651
652 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
653 {
654 struct video_device *dev = video_devdata(file);
655 struct usb_usbvision *usbvision =
656 (struct usb_usbvision *) video_get_drvdata(dev);
657 usbvision->tvnormId=*id;
658
659 down(&usbvision->lock);
660 call_i2c_clients(usbvision, VIDIOC_S_STD,
661 &usbvision->tvnormId);
662 up(&usbvision->lock);
663 /* propagate the change to the decoder */
664 usbvision_muxsel(usbvision, usbvision->ctl_input);
665
666 return 0;
667 }
668
669 static int vidioc_g_tuner (struct file *file, void *priv,
670 struct v4l2_tuner *vt)
671 {
672 struct video_device *dev = video_devdata(file);
673 struct usb_usbvision *usbvision =
674 (struct usb_usbvision *) video_get_drvdata(dev);
675
676 if (!usbvision->have_tuner || vt->index) // Only tuner 0
677 return -EINVAL;
678 if(usbvision->radio) {
679 strcpy(vt->name, "Radio");
680 vt->type = V4L2_TUNER_RADIO;
681 } else {
682 strcpy(vt->name, "Television");
683 }
684 /* Let clients fill in the remainder of this struct */
685 call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
686
687 return 0;
688 }
689
690 static int vidioc_s_tuner (struct file *file, void *priv,
691 struct v4l2_tuner *vt)
692 {
693 struct video_device *dev = video_devdata(file);
694 struct usb_usbvision *usbvision =
695 (struct usb_usbvision *) video_get_drvdata(dev);
696
697 // Only no or one tuner for now
698 if (!usbvision->have_tuner || vt->index)
699 return -EINVAL;
700 /* let clients handle this */
701 call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
702
703 return 0;
704 }
705
706 static int vidioc_g_frequency (struct file *file, void *priv,
707 struct v4l2_frequency *freq)
708 {
709 struct video_device *dev = video_devdata(file);
710 struct usb_usbvision *usbvision =
711 (struct usb_usbvision *) video_get_drvdata(dev);
712
713 freq->tuner = 0; // Only one tuner
714 if(usbvision->radio) {
715 freq->type = V4L2_TUNER_RADIO;
716 } else {
717 freq->type = V4L2_TUNER_ANALOG_TV;
718 }
719 freq->frequency = usbvision->freq;
720
721 return 0;
722 }
723
724 static int vidioc_s_frequency (struct file *file, void *priv,
725 struct v4l2_frequency *freq)
726 {
727 struct video_device *dev = video_devdata(file);
728 struct usb_usbvision *usbvision =
729 (struct usb_usbvision *) video_get_drvdata(dev);
730
731 // Only no or one tuner for now
732 if (!usbvision->have_tuner || freq->tuner)
733 return -EINVAL;
734
735 usbvision->freq = freq->frequency;
736 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
737
738 return 0;
739 }
740
741 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
742 {
743 struct video_device *dev = video_devdata(file);
744 struct usb_usbvision *usbvision =
745 (struct usb_usbvision *) video_get_drvdata(dev);
746
747 memset(a,0,sizeof(*a));
748 if(usbvision->radio) {
749 strcpy(a->name,"Radio");
750 } else {
751 strcpy(a->name, "TV");
752 }
753
754 return 0;
755 }
756
757 static int vidioc_s_audio (struct file *file, void *fh,
758 struct v4l2_audio *a)
759 {
760 if(a->index) {
761 return -EINVAL;
762 }
763
764 return 0;
765 }
766
767 static int vidioc_queryctrl (struct file *file, void *priv,
768 struct v4l2_queryctrl *ctrl)
769 {
770 struct video_device *dev = video_devdata(file);
771 struct usb_usbvision *usbvision =
772 (struct usb_usbvision *) video_get_drvdata(dev);
773 int id=ctrl->id;
774
775 memset(ctrl,0,sizeof(*ctrl));
776 ctrl->id=id;
777
778 call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
779
780 if (!ctrl->type)
781 return -EINVAL;
782
783 return 0;
784 }
785
786 static int vidioc_g_ctrl (struct file *file, void *priv,
787 struct v4l2_control *ctrl)
788 {
789 struct video_device *dev = video_devdata(file);
790 struct usb_usbvision *usbvision =
791 (struct usb_usbvision *) video_get_drvdata(dev);
792 call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
793
794 return 0;
795 }
796
797 static int vidioc_s_ctrl (struct file *file, void *priv,
798 struct v4l2_control *ctrl)
799 {
800 struct video_device *dev = video_devdata(file);
801 struct usb_usbvision *usbvision =
802 (struct usb_usbvision *) video_get_drvdata(dev);
803 call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
804
805 return 0;
806 }
807
808 static int vidioc_reqbufs (struct file *file,
809 void *priv, struct v4l2_requestbuffers *vr)
810 {
811 struct video_device *dev = video_devdata(file);
812 struct usb_usbvision *usbvision =
813 (struct usb_usbvision *) video_get_drvdata(dev);
814 int ret;
815
816 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
817
818 /* Check input validity:
819 the user must do a VIDEO CAPTURE and MMAP method. */
820 if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
821 (vr->memory != V4L2_MEMORY_MMAP))
822 return -EINVAL;
823
824 if(usbvision->streaming == Stream_On) {
825 if ((ret = usbvision_stream_interrupt(usbvision)))
826 return ret;
827 }
828
829 usbvision_frames_free(usbvision);
830 usbvision_empty_framequeues(usbvision);
831 vr->count = usbvision_frames_alloc(usbvision,vr->count);
832
833 usbvision->curFrame = NULL;
834
835 return 0;
836 }
837
838 static int vidioc_querybuf (struct file *file,
839 void *priv, struct v4l2_buffer *vb)
840 {
841 struct video_device *dev = video_devdata(file);
842 struct usb_usbvision *usbvision =
843 (struct usb_usbvision *) video_get_drvdata(dev);
844 struct usbvision_frame *frame;
845
846 /* FIXME : must control
847 that buffers are mapped (VIDIOC_REQBUFS has been called) */
848 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
849 return -EINVAL;
850 }
851 if(vb->index>=usbvision->num_frames) {
852 return -EINVAL;
853 }
854 /* Updating the corresponding frame state */
855 vb->flags = 0;
856 frame = &usbvision->frame[vb->index];
857 if(frame->grabstate >= FrameState_Ready)
858 vb->flags |= V4L2_BUF_FLAG_QUEUED;
859 if(frame->grabstate >= FrameState_Done)
860 vb->flags |= V4L2_BUF_FLAG_DONE;
861 if(frame->grabstate == FrameState_Unused)
862 vb->flags |= V4L2_BUF_FLAG_MAPPED;
863 vb->memory = V4L2_MEMORY_MMAP;
864
865 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
866
867 vb->memory = V4L2_MEMORY_MMAP;
868 vb->field = V4L2_FIELD_NONE;
869 vb->length = usbvision->curwidth*
870 usbvision->curheight*
871 usbvision->palette.bytes_per_pixel;
872 vb->timestamp = usbvision->frame[vb->index].timestamp;
873 vb->sequence = usbvision->frame[vb->index].sequence;
874 return 0;
875 }
876
877 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
878 {
879 struct video_device *dev = video_devdata(file);
880 struct usb_usbvision *usbvision =
881 (struct usb_usbvision *) video_get_drvdata(dev);
882 struct usbvision_frame *frame;
883 unsigned long lock_flags;
884
885 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
886 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
887 return -EINVAL;
888 }
889 if(vb->index>=usbvision->num_frames) {
890 return -EINVAL;
891 }
892
893 frame = &usbvision->frame[vb->index];
894
895 if (frame->grabstate != FrameState_Unused) {
896 return -EAGAIN;
897 }
898
899 /* Mark it as ready and enqueue frame */
900 frame->grabstate = FrameState_Ready;
901 frame->scanstate = ScanState_Scanning;
902 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
903
904 vb->flags &= ~V4L2_BUF_FLAG_DONE;
905
906 /* set v4l2_format index */
907 frame->v4l2_format = usbvision->palette;
908
909 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
910 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
911 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
912
913 return 0;
914 }
915
916 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
917 {
918 struct video_device *dev = video_devdata(file);
919 struct usb_usbvision *usbvision =
920 (struct usb_usbvision *) video_get_drvdata(dev);
921 int ret;
922 struct usbvision_frame *f;
923 unsigned long lock_flags;
924
925 if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
926 return -EINVAL;
927
928 if (list_empty(&(usbvision->outqueue))) {
929 if (usbvision->streaming == Stream_Idle)
930 return -EINVAL;
931 ret = wait_event_interruptible
932 (usbvision->wait_frame,
933 !list_empty(&(usbvision->outqueue)));
934 if (ret)
935 return ret;
936 }
937
938 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
939 f = list_entry(usbvision->outqueue.next,
940 struct usbvision_frame, frame);
941 list_del(usbvision->outqueue.next);
942 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
943
944 f->grabstate = FrameState_Unused;
945
946 vb->memory = V4L2_MEMORY_MMAP;
947 vb->flags = V4L2_BUF_FLAG_MAPPED |
948 V4L2_BUF_FLAG_QUEUED |
949 V4L2_BUF_FLAG_DONE;
950 vb->index = f->index;
951 vb->sequence = f->sequence;
952 vb->timestamp = f->timestamp;
953 vb->field = V4L2_FIELD_NONE;
954 vb->bytesused = f->scanlength;
955
956 return 0;
957 }
958
959 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
960 {
961 struct video_device *dev = video_devdata(file);
962 struct usb_usbvision *usbvision =
963 (struct usb_usbvision *) video_get_drvdata(dev);
964 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
965
966 usbvision->streaming = Stream_On;
967 call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
968
969 return 0;
970 }
971
972 static int vidioc_streamoff(struct file *file,
973 void *priv, enum v4l2_buf_type type)
974 {
975 struct video_device *dev = video_devdata(file);
976 struct usb_usbvision *usbvision =
977 (struct usb_usbvision *) video_get_drvdata(dev);
978 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
979
980 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
981 return -EINVAL;
982
983 if(usbvision->streaming == Stream_On) {
984 usbvision_stream_interrupt(usbvision);
985 /* Stop all video streamings */
986 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
987 }
988 usbvision_empty_framequeues(usbvision);
989
990 return 0;
991 }
992
993 static int vidioc_enum_fmt_cap (struct file *file, void *priv,
994 struct v4l2_fmtdesc *vfd)
995 {
996 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
997 return -EINVAL;
998 }
999 vfd->flags = 0;
1000 vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1001 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
1002 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
1003 memset(vfd->reserved, 0, sizeof(vfd->reserved));
1004 return 0;
1005 }
1006
1007 static int vidioc_g_fmt_cap (struct file *file, void *priv,
1008 struct v4l2_format *vf)
1009 {
1010 struct video_device *dev = video_devdata(file);
1011 struct usb_usbvision *usbvision =
1012 (struct usb_usbvision *) video_get_drvdata(dev);
1013 vf->fmt.pix.width = usbvision->curwidth;
1014 vf->fmt.pix.height = usbvision->curheight;
1015 vf->fmt.pix.pixelformat = usbvision->palette.format;
1016 vf->fmt.pix.bytesperline =
1017 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1018 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1019 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1020 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1021
1022 return 0;
1023 }
1024
1025 static int vidioc_try_fmt_cap (struct file *file, void *priv,
1026 struct v4l2_format *vf)
1027 {
1028 struct video_device *dev = video_devdata(file);
1029 struct usb_usbvision *usbvision =
1030 (struct usb_usbvision *) video_get_drvdata(dev);
1031 int formatIdx;
1032
1033 /* Find requested format in available ones */
1034 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1035 if(vf->fmt.pix.pixelformat ==
1036 usbvision_v4l2_format[formatIdx].format) {
1037 usbvision->palette = usbvision_v4l2_format[formatIdx];
1038 break;
1039 }
1040 }
1041 /* robustness */
1042 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1043 return -EINVAL;
1044 }
1045 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1046 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1047
1048 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1049 usbvision->palette.bytes_per_pixel;
1050 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1051
1052 return 0;
1053 }
1054
1055 static int vidioc_s_fmt_cap(struct file *file, void *priv,
1056 struct v4l2_format *vf)
1057 {
1058 struct video_device *dev = video_devdata(file);
1059 struct usb_usbvision *usbvision =
1060 (struct usb_usbvision *) video_get_drvdata(dev);
1061 int ret;
1062
1063 if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) {
1064 return ret;
1065 }
1066
1067 /* stop io in case it is already in progress */
1068 if(usbvision->streaming == Stream_On) {
1069 if ((ret = usbvision_stream_interrupt(usbvision)))
1070 return ret;
1071 }
1072 usbvision_frames_free(usbvision);
1073 usbvision_empty_framequeues(usbvision);
1074
1075 usbvision->curFrame = NULL;
1076
1077 /* by now we are committed to the new data... */
1078 down(&usbvision->lock);
1079 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1080 up(&usbvision->lock);
1081
1082 return 0;
1083 }
1084
1085 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1086 size_t count, loff_t *ppos)
1087 {
1088 struct video_device *dev = video_devdata(file);
1089 struct usb_usbvision *usbvision =
1090 (struct usb_usbvision *) video_get_drvdata(dev);
1091 int noblock = file->f_flags & O_NONBLOCK;
1092 unsigned long lock_flags;
1093
1094 int ret,i;
1095 struct usbvision_frame *frame;
1096
1097 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__,
1098 (unsigned long)count, noblock);
1099
1100 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1101 return -EFAULT;
1102
1103 /* This entry point is compatible with the mmap routines
1104 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1105 to get frames or call read on the device. */
1106 if(!usbvision->num_frames) {
1107 /* First, allocate some frames to work with
1108 if this has not been done with VIDIOC_REQBUF */
1109 usbvision_frames_free(usbvision);
1110 usbvision_empty_framequeues(usbvision);
1111 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1112 }
1113
1114 if(usbvision->streaming != Stream_On) {
1115 /* no stream is running, make it running ! */
1116 usbvision->streaming = Stream_On;
1117 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1118 }
1119
1120 /* Then, enqueue as many frames as possible
1121 (like a user of VIDIOC_QBUF would do) */
1122 for(i=0;i<usbvision->num_frames;i++) {
1123 frame = &usbvision->frame[i];
1124 if(frame->grabstate == FrameState_Unused) {
1125 /* Mark it as ready and enqueue frame */
1126 frame->grabstate = FrameState_Ready;
1127 frame->scanstate = ScanState_Scanning;
1128 /* Accumulated in usbvision_parse_data() */
1129 frame->scanlength = 0;
1130
1131 /* set v4l2_format index */
1132 frame->v4l2_format = usbvision->palette;
1133
1134 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1135 list_add_tail(&frame->frame, &usbvision->inqueue);
1136 spin_unlock_irqrestore(&usbvision->queue_lock,
1137 lock_flags);
1138 }
1139 }
1140
1141 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1142 if (list_empty(&(usbvision->outqueue))) {
1143 if(noblock)
1144 return -EAGAIN;
1145
1146 ret = wait_event_interruptible
1147 (usbvision->wait_frame,
1148 !list_empty(&(usbvision->outqueue)));
1149 if (ret)
1150 return ret;
1151 }
1152
1153 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1154 frame = list_entry(usbvision->outqueue.next,
1155 struct usbvision_frame, frame);
1156 list_del(usbvision->outqueue.next);
1157 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1158
1159 /* An error returns an empty frame */
1160 if (frame->grabstate == FrameState_Error) {
1161 frame->bytes_read = 0;
1162 return 0;
1163 }
1164
1165 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1166 __FUNCTION__,
1167 frame->index, frame->bytes_read, frame->scanlength);
1168
1169 /* copy bytes to user space; we allow for partials reads */
1170 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1171 count = frame->scanlength - frame->bytes_read;
1172
1173 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1174 return -EFAULT;
1175 }
1176
1177 frame->bytes_read += count;
1178 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1179 __FUNCTION__,
1180 (unsigned long)count, frame->bytes_read);
1181
1182 /* For now, forget the frame if it has not been read in one shot. */
1183 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1184 frame->bytes_read = 0;
1185
1186 /* Mark it as available to be used again. */
1187 frame->grabstate = FrameState_Unused;
1188 /* } */
1189
1190 return count;
1191 }
1192
1193 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1194 {
1195 unsigned long size = vma->vm_end - vma->vm_start,
1196 start = vma->vm_start;
1197 void *pos;
1198 u32 i;
1199
1200 struct video_device *dev = video_devdata(file);
1201 struct usb_usbvision *usbvision =
1202 (struct usb_usbvision *) video_get_drvdata(dev);
1203
1204 PDEBUG(DBG_MMAP, "mmap");
1205
1206 down(&usbvision->lock);
1207
1208 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1209 up(&usbvision->lock);
1210 return -EFAULT;
1211 }
1212
1213 if (!(vma->vm_flags & VM_WRITE) ||
1214 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1215 up(&usbvision->lock);
1216 return -EINVAL;
1217 }
1218
1219 for (i = 0; i < usbvision->num_frames; i++) {
1220 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1221 vma->vm_pgoff)
1222 break;
1223 }
1224 if (i == usbvision->num_frames) {
1225 PDEBUG(DBG_MMAP,
1226 "mmap: user supplied mapping address is out of range");
1227 up(&usbvision->lock);
1228 return -EINVAL;
1229 }
1230
1231 /* VM_IO is eventually going to replace PageReserved altogether */
1232 vma->vm_flags |= VM_IO;
1233 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1234
1235 pos = usbvision->frame[i].data;
1236 while (size > 0) {
1237
1238 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1239 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1240 up(&usbvision->lock);
1241 return -EAGAIN;
1242 }
1243 start += PAGE_SIZE;
1244 pos += PAGE_SIZE;
1245 size -= PAGE_SIZE;
1246 }
1247
1248 up(&usbvision->lock);
1249 return 0;
1250 }
1251
1252
1253 /*
1254 * Here comes the stuff for radio on usbvision based devices
1255 *
1256 */
1257 static int usbvision_radio_open(struct inode *inode, struct file *file)
1258 {
1259 struct video_device *dev = video_devdata(file);
1260 struct usb_usbvision *usbvision =
1261 (struct usb_usbvision *) video_get_drvdata(dev);
1262 int errCode = 0;
1263
1264 PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1265
1266 down(&usbvision->lock);
1267
1268 if (usbvision->user) {
1269 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1270 errCode = -EBUSY;
1271 }
1272 else {
1273 if(PowerOnAtOpen) {
1274 usbvision_reset_powerOffTimer(usbvision);
1275 if (usbvision->power == 0) {
1276 usbvision_power_on(usbvision);
1277 usbvision_i2c_register(usbvision);
1278 }
1279 }
1280
1281 /* Alternate interface 1 is is the biggest frame size */
1282 errCode = usbvision_set_alternate(usbvision);
1283 if (errCode < 0) {
1284 usbvision->last_error = errCode;
1285 return -EBUSY;
1286 }
1287
1288 // If so far no errors then we shall start the radio
1289 usbvision->radio = 1;
1290 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1291 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1292 usbvision->user++;
1293 }
1294
1295 if (errCode) {
1296 if (PowerOnAtOpen) {
1297 usbvision_i2c_unregister(usbvision);
1298 usbvision_power_off(usbvision);
1299 usbvision->initialized = 0;
1300 }
1301 }
1302 up(&usbvision->lock);
1303 return errCode;
1304 }
1305
1306
1307 static int usbvision_radio_close(struct inode *inode, struct file *file)
1308 {
1309 struct video_device *dev = video_devdata(file);
1310 struct usb_usbvision *usbvision =
1311 (struct usb_usbvision *) video_get_drvdata(dev);
1312 int errCode = 0;
1313
1314 PDEBUG(DBG_IO, "");
1315
1316 down(&usbvision->lock);
1317
1318 /* Set packet size to 0 */
1319 usbvision->ifaceAlt=0;
1320 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1321 usbvision->ifaceAlt);
1322
1323 usbvision_audio_off(usbvision);
1324 usbvision->radio=0;
1325 usbvision->user--;
1326
1327 if (PowerOnAtOpen) {
1328 usbvision_set_powerOffTimer(usbvision);
1329 usbvision->initialized = 0;
1330 }
1331
1332 up(&usbvision->lock);
1333
1334 if (usbvision->remove_pending) {
1335 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1336 usbvision_release(usbvision);
1337 }
1338
1339
1340 PDEBUG(DBG_IO, "success");
1341
1342 return errCode;
1343 }
1344
1345 /*
1346 * Here comes the stuff for vbi on usbvision based devices
1347 *
1348 */
1349 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1350 {
1351 /* TODO */
1352 return -ENODEV;
1353
1354 }
1355
1356 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1357 {
1358 /* TODO */
1359 return -ENODEV;
1360 }
1361
1362 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1363 unsigned int cmd, void *arg)
1364 {
1365 /* TODO */
1366 return -ENOIOCTLCMD;
1367 }
1368
1369 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1370 unsigned int cmd, unsigned long arg)
1371 {
1372 return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1373 }
1374
1375
1376 //
1377 // Video registration stuff
1378 //
1379
1380 // Video template
1381 static const struct file_operations usbvision_fops = {
1382 .owner = THIS_MODULE,
1383 .open = usbvision_v4l2_open,
1384 .release = usbvision_v4l2_close,
1385 .read = usbvision_v4l2_read,
1386 .mmap = usbvision_v4l2_mmap,
1387 .ioctl = video_ioctl2,
1388 .llseek = no_llseek,
1389 /* .poll = video_poll, */
1390 .compat_ioctl = v4l_compat_ioctl32,
1391 };
1392 static struct video_device usbvision_video_template = {
1393 .owner = THIS_MODULE,
1394 .type = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1395 .hardware = VID_HARDWARE_USBVISION,
1396 .fops = &usbvision_fops,
1397 .name = "usbvision-video",
1398 .release = video_device_release,
1399 .minor = -1,
1400 .vidioc_querycap = vidioc_querycap,
1401 .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
1402 .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
1403 .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
1404 .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
1405 .vidioc_reqbufs = vidioc_reqbufs,
1406 .vidioc_querybuf = vidioc_querybuf,
1407 .vidioc_qbuf = vidioc_qbuf,
1408 .vidioc_dqbuf = vidioc_dqbuf,
1409 .vidioc_s_std = vidioc_s_std,
1410 .vidioc_enum_input = vidioc_enum_input,
1411 .vidioc_g_input = vidioc_g_input,
1412 .vidioc_s_input = vidioc_s_input,
1413 .vidioc_queryctrl = vidioc_queryctrl,
1414 .vidioc_g_audio = vidioc_g_audio,
1415 .vidioc_s_audio = vidioc_s_audio,
1416 .vidioc_g_ctrl = vidioc_g_ctrl,
1417 .vidioc_s_ctrl = vidioc_s_ctrl,
1418 .vidioc_streamon = vidioc_streamon,
1419 .vidioc_streamoff = vidioc_streamoff,
1420 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1421 /* .vidiocgmbuf = vidiocgmbuf, */
1422 #endif
1423 .vidioc_g_tuner = vidioc_g_tuner,
1424 .vidioc_s_tuner = vidioc_s_tuner,
1425 .vidioc_g_frequency = vidioc_g_frequency,
1426 .vidioc_s_frequency = vidioc_s_frequency,
1427 #ifdef CONFIG_VIDEO_ADV_DEBUG
1428 .vidioc_g_register = vidioc_g_register,
1429 .vidioc_s_register = vidioc_s_register,
1430 #endif
1431 .tvnorms = USBVISION_NORMS,
1432 .current_norm = V4L2_STD_PAL
1433 };
1434
1435
1436 // Radio template
1437 static const struct file_operations usbvision_radio_fops = {
1438 .owner = THIS_MODULE,
1439 .open = usbvision_radio_open,
1440 .release = usbvision_radio_close,
1441 .ioctl = video_ioctl2,
1442 .llseek = no_llseek,
1443 .compat_ioctl = v4l_compat_ioctl32,
1444 };
1445
1446 static struct video_device usbvision_radio_template=
1447 {
1448 .owner = THIS_MODULE,
1449 .type = VID_TYPE_TUNER,
1450 .hardware = VID_HARDWARE_USBVISION,
1451 .fops = &usbvision_radio_fops,
1452 .name = "usbvision-radio",
1453 .release = video_device_release,
1454 .minor = -1,
1455 .vidioc_querycap = vidioc_querycap,
1456 .vidioc_enum_input = vidioc_enum_input,
1457 .vidioc_g_input = vidioc_g_input,
1458 .vidioc_s_input = vidioc_s_input,
1459 .vidioc_queryctrl = vidioc_queryctrl,
1460 .vidioc_g_audio = vidioc_g_audio,
1461 .vidioc_s_audio = vidioc_s_audio,
1462 .vidioc_g_ctrl = vidioc_g_ctrl,
1463 .vidioc_s_ctrl = vidioc_s_ctrl,
1464 .vidioc_g_tuner = vidioc_g_tuner,
1465 .vidioc_s_tuner = vidioc_s_tuner,
1466 .vidioc_g_frequency = vidioc_g_frequency,
1467 .vidioc_s_frequency = vidioc_s_frequency,
1468
1469 .tvnorms = USBVISION_NORMS,
1470 .current_norm = V4L2_STD_PAL
1471 };
1472
1473 // vbi template
1474 static const struct file_operations usbvision_vbi_fops = {
1475 .owner = THIS_MODULE,
1476 .open = usbvision_vbi_open,
1477 .release = usbvision_vbi_close,
1478 .ioctl = usbvision_vbi_ioctl,
1479 .llseek = no_llseek,
1480 .compat_ioctl = v4l_compat_ioctl32,
1481 };
1482
1483 static struct video_device usbvision_vbi_template=
1484 {
1485 .owner = THIS_MODULE,
1486 .type = VID_TYPE_TUNER,
1487 .hardware = VID_HARDWARE_USBVISION,
1488 .fops = &usbvision_vbi_fops,
1489 .release = video_device_release,
1490 .name = "usbvision-vbi",
1491 .minor = -1,
1492 };
1493
1494
1495 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1496 struct video_device *vdev_template,
1497 char *name)
1498 {
1499 struct usb_device *usb_dev = usbvision->dev;
1500 struct video_device *vdev;
1501
1502 if (usb_dev == NULL) {
1503 err("%s: usbvision->dev is not set", __FUNCTION__);
1504 return NULL;
1505 }
1506
1507 vdev = video_device_alloc();
1508 if (NULL == vdev) {
1509 return NULL;
1510 }
1511 *vdev = *vdev_template;
1512 // vdev->minor = -1;
1513 vdev->dev = &usb_dev->dev;
1514 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1515 video_set_drvdata(vdev, usbvision);
1516 return vdev;
1517 }
1518
1519 // unregister video4linux devices
1520 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1521 {
1522 // vbi Device:
1523 if (usbvision->vbi) {
1524 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1525 usbvision->vbi->minor & 0x1f);
1526 if (usbvision->vbi->minor != -1) {
1527 video_unregister_device(usbvision->vbi);
1528 } else {
1529 video_device_release(usbvision->vbi);
1530 }
1531 usbvision->vbi = NULL;
1532 }
1533
1534 // Radio Device:
1535 if (usbvision->rdev) {
1536 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1537 usbvision->rdev->minor & 0x1f);
1538 if (usbvision->rdev->minor != -1) {
1539 video_unregister_device(usbvision->rdev);
1540 } else {
1541 video_device_release(usbvision->rdev);
1542 }
1543 usbvision->rdev = NULL;
1544 }
1545
1546 // Video Device:
1547 if (usbvision->vdev) {
1548 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1549 usbvision->vdev->minor & 0x1f);
1550 if (usbvision->vdev->minor != -1) {
1551 video_unregister_device(usbvision->vdev);
1552 } else {
1553 video_device_release(usbvision->vdev);
1554 }
1555 usbvision->vdev = NULL;
1556 }
1557 }
1558
1559 // register video4linux devices
1560 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1561 {
1562 // Video Device:
1563 usbvision->vdev = usbvision_vdev_init(usbvision,
1564 &usbvision_video_template,
1565 "USBVision Video");
1566 if (usbvision->vdev == NULL) {
1567 goto err_exit;
1568 }
1569 if (video_register_device(usbvision->vdev,
1570 VFL_TYPE_GRABBER,
1571 video_nr)<0) {
1572 goto err_exit;
1573 }
1574 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1575 usbvision->nr,usbvision->vdev->minor & 0x1f);
1576
1577 // Radio Device:
1578 if (usbvision_device_data[usbvision->DevModel].Radio) {
1579 // usbvision has radio
1580 usbvision->rdev = usbvision_vdev_init(usbvision,
1581 &usbvision_radio_template,
1582 "USBVision Radio");
1583 if (usbvision->rdev == NULL) {
1584 goto err_exit;
1585 }
1586 if (video_register_device(usbvision->rdev,
1587 VFL_TYPE_RADIO,
1588 radio_nr)<0) {
1589 goto err_exit;
1590 }
1591 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1592 usbvision->nr, usbvision->rdev->minor & 0x1f);
1593 }
1594 // vbi Device:
1595 if (usbvision_device_data[usbvision->DevModel].vbi) {
1596 usbvision->vbi = usbvision_vdev_init(usbvision,
1597 &usbvision_vbi_template,
1598 "USBVision VBI");
1599 if (usbvision->vdev == NULL) {
1600 goto err_exit;
1601 }
1602 if (video_register_device(usbvision->vbi,
1603 VFL_TYPE_VBI,
1604 vbi_nr)<0) {
1605 goto err_exit;
1606 }
1607 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1608 usbvision->nr,usbvision->vbi->minor & 0x1f);
1609 }
1610 // all done
1611 return 0;
1612
1613 err_exit:
1614 err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1615 usbvision_unregister_video(usbvision);
1616 return -1;
1617 }
1618
1619 /*
1620 * usbvision_alloc()
1621 *
1622 * This code allocates the struct usb_usbvision.
1623 * It is filled with default values.
1624 *
1625 * Returns NULL on error, a pointer to usb_usbvision else.
1626 *
1627 */
1628 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1629 {
1630 struct usb_usbvision *usbvision;
1631
1632 if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1633 NULL) {
1634 goto err_exit;
1635 }
1636
1637 usbvision->dev = dev;
1638
1639 init_MUTEX(&usbvision->lock); /* to 1 == available */
1640
1641 // prepare control urb for control messages during interrupts
1642 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1643 if (usbvision->ctrlUrb == NULL) {
1644 goto err_exit;
1645 }
1646 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1647 init_MUTEX(&usbvision->ctrlUrbLock); /* to 1 == available */
1648
1649 usbvision_init_powerOffTimer(usbvision);
1650
1651 return usbvision;
1652
1653 err_exit:
1654 if (usbvision && usbvision->ctrlUrb) {
1655 usb_free_urb(usbvision->ctrlUrb);
1656 }
1657 if (usbvision) {
1658 kfree(usbvision);
1659 }
1660 return NULL;
1661 }
1662
1663 /*
1664 * usbvision_release()
1665 *
1666 * This code does final release of struct usb_usbvision. This happens
1667 * after the device is disconnected -and- all clients closed their files.
1668 *
1669 */
1670 static void usbvision_release(struct usb_usbvision *usbvision)
1671 {
1672 PDEBUG(DBG_PROBE, "");
1673
1674 down(&usbvision->lock);
1675
1676 usbvision_reset_powerOffTimer(usbvision);
1677
1678 usbvision->initialized = 0;
1679
1680 up(&usbvision->lock);
1681
1682 usbvision_remove_sysfs(usbvision->vdev);
1683 usbvision_unregister_video(usbvision);
1684
1685 if (usbvision->ctrlUrb) {
1686 usb_free_urb(usbvision->ctrlUrb);
1687 }
1688
1689 kfree(usbvision);
1690
1691 PDEBUG(DBG_PROBE, "success");
1692 }
1693
1694
1695 /*********************** usb interface **********************************/
1696
1697 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1698 {
1699 int model;
1700
1701 if (usbvision == NULL)
1702 return;
1703
1704 model = usbvision->DevModel;
1705 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1706
1707 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1708 usbvision->Vin_Reg2_Preset =
1709 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1710 } else {
1711 usbvision->Vin_Reg2_Preset = 0;
1712 }
1713
1714 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1715
1716 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1717 usbvision->ctl_input = 0;
1718
1719 /* This should be here to make i2c clients to be able to register */
1720 /* first switch off audio */
1721 usbvision_audio_off(usbvision);
1722 if (!PowerOnAtOpen) {
1723 /* and then power up the noisy tuner */
1724 usbvision_power_on(usbvision);
1725 usbvision_i2c_register(usbvision);
1726 }
1727 }
1728
1729 /*
1730 * usbvision_probe()
1731 *
1732 * This procedure queries device descriptor and accepts the interface
1733 * if it looks like USBVISION video device
1734 *
1735 */
1736 static int __devinit usbvision_probe(struct usb_interface *intf,
1737 const struct usb_device_id *devid)
1738 {
1739 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1740 struct usb_interface *uif;
1741 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1742 const struct usb_host_interface *interface;
1743 struct usb_usbvision *usbvision = NULL;
1744 const struct usb_endpoint_descriptor *endpoint;
1745 int model,i;
1746
1747 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1748 dev->descriptor.idVendor,
1749 dev->descriptor.idProduct, ifnum);
1750
1751 model = devid->driver_info;
1752 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1753 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1754 return -ENODEV;
1755 }
1756 printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1757 usbvision_device_data[model].ModelString);
1758
1759 if (usbvision_device_data[model].Interface >= 0) {
1760 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1761 } else {
1762 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1763 }
1764 endpoint = &interface->endpoint[1].desc;
1765 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1766 USB_ENDPOINT_XFER_ISOC) {
1767 err("%s: interface %d. has non-ISO endpoint!",
1768 __FUNCTION__, ifnum);
1769 err("%s: Endpoint attributes %d",
1770 __FUNCTION__, endpoint->bmAttributes);
1771 return -ENODEV;
1772 }
1773 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1774 USB_DIR_OUT) {
1775 err("%s: interface %d. has ISO OUT endpoint!",
1776 __FUNCTION__, ifnum);
1777 return -ENODEV;
1778 }
1779
1780 if ((usbvision = usbvision_alloc(dev)) == NULL) {
1781 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1782 return -ENOMEM;
1783 }
1784
1785 if (dev->descriptor.bNumConfigurations > 1) {
1786 usbvision->bridgeType = BRIDGE_NT1004;
1787 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1788 usbvision->bridgeType = BRIDGE_NT1005;
1789 } else {
1790 usbvision->bridgeType = BRIDGE_NT1003;
1791 }
1792 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1793
1794 down(&usbvision->lock);
1795
1796 /* compute alternate max packet sizes */
1797 uif = dev->actconfig->interface[0];
1798
1799 usbvision->num_alt=uif->num_altsetting;
1800 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1801 usbvision->alt_max_pkt_size = kmalloc(32*
1802 usbvision->num_alt,GFP_KERNEL);
1803 if (usbvision->alt_max_pkt_size == NULL) {
1804 err("usbvision: out of memory!\n");
1805 return -ENOMEM;
1806 }
1807
1808 for (i = 0; i < usbvision->num_alt ; i++) {
1809 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1810 wMaxPacketSize);
1811 usbvision->alt_max_pkt_size[i] =
1812 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1813 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1814 usbvision->alt_max_pkt_size[i]);
1815 }
1816
1817
1818 usbvision->nr = usbvision_nr++;
1819
1820 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1821 if (usbvision->have_tuner) {
1822 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1823 }
1824
1825 usbvision->tuner_addr = ADDR_UNSET;
1826
1827 usbvision->DevModel = model;
1828 usbvision->remove_pending = 0;
1829 usbvision->iface = ifnum;
1830 usbvision->ifaceAlt = 0;
1831 usbvision->video_endp = endpoint->bEndpointAddress;
1832 usbvision->isocPacketSize = 0;
1833 usbvision->usb_bandwidth = 0;
1834 usbvision->user = 0;
1835 usbvision->streaming = Stream_Off;
1836 usbvision_register_video(usbvision);
1837 usbvision_configure_video(usbvision);
1838 up(&usbvision->lock);
1839
1840
1841 usb_set_intfdata (intf, usbvision);
1842 usbvision_create_sysfs(usbvision->vdev);
1843
1844 PDEBUG(DBG_PROBE, "success");
1845 return 0;
1846 }
1847
1848
1849 /*
1850 * usbvision_disconnect()
1851 *
1852 * This procedure stops all driver activity, deallocates interface-private
1853 * structure (pointed by 'ptr') and after that driver should be removable
1854 * with no ill consequences.
1855 *
1856 */
1857 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1858 {
1859 struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1860
1861 PDEBUG(DBG_PROBE, "");
1862
1863 if (usbvision == NULL) {
1864 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1865 return;
1866 }
1867 usb_set_intfdata (intf, NULL);
1868
1869 down(&usbvision->lock);
1870
1871 // At this time we ask to cancel outstanding URBs
1872 usbvision_stop_isoc(usbvision);
1873
1874 if (usbvision->power) {
1875 usbvision_i2c_unregister(usbvision);
1876 usbvision_power_off(usbvision);
1877 }
1878 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1879
1880 usb_put_dev(usbvision->dev);
1881 usbvision->dev = NULL; // USB device is no more
1882
1883 up(&usbvision->lock);
1884
1885 if (usbvision->user) {
1886 printk(KERN_INFO "%s: In use, disconnect pending\n",
1887 __FUNCTION__);
1888 wake_up_interruptible(&usbvision->wait_frame);
1889 wake_up_interruptible(&usbvision->wait_stream);
1890 } else {
1891 usbvision_release(usbvision);
1892 }
1893
1894 PDEBUG(DBG_PROBE, "success");
1895
1896 }
1897
1898 static struct usb_driver usbvision_driver = {
1899 .name = "usbvision",
1900 .id_table = usbvision_table,
1901 .probe = usbvision_probe,
1902 .disconnect = usbvision_disconnect
1903 };
1904
1905 /*
1906 * usbvision_init()
1907 *
1908 * This code is run to initialize the driver.
1909 *
1910 */
1911 static int __init usbvision_init(void)
1912 {
1913 int errCode;
1914
1915 PDEBUG(DBG_PROBE, "");
1916
1917 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1918 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1919 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1920
1921 /* disable planar mode support unless compression enabled */
1922 if (isocMode != ISOC_MODE_COMPRESS ) {
1923 // FIXME : not the right way to set supported flag
1924 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1925 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1926 }
1927
1928 errCode = usb_register(&usbvision_driver);
1929
1930 if (errCode == 0) {
1931 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1932 PDEBUG(DBG_PROBE, "success");
1933 }
1934 return errCode;
1935 }
1936
1937 static void __exit usbvision_exit(void)
1938 {
1939 PDEBUG(DBG_PROBE, "");
1940
1941 usb_deregister(&usbvision_driver);
1942 PDEBUG(DBG_PROBE, "success");
1943 }
1944
1945 module_init(usbvision_init);
1946 module_exit(usbvision_exit);
1947
1948 /*
1949 * Overrides for Emacs so that we follow Linus's tabbing style.
1950 * ---------------------------------------------------------------------------
1951 * Local variables:
1952 * c-basic-offset: 8
1953 * End:
1954 */
WRT350N Kernel Patches