Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[linux-2.6] / drivers / media / video / usbvision / usbvision-video.c
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         .mmap          = usbvision_v4l2_mmap,
1391         .compat_ioctl  = v4l_compat_ioctl32,
1392 };
1393 static struct video_device usbvision_video_template = {
1394         .owner             = THIS_MODULE,
1395         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1396         .hardware       = VID_HARDWARE_USBVISION,
1397         .fops           = &usbvision_fops,
1398         .name           = "usbvision-video",
1399         .release        = video_device_release,
1400         .minor          = -1,
1401         .vidioc_querycap      = vidioc_querycap,
1402         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1403         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1404         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1405         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1406         .vidioc_reqbufs       = vidioc_reqbufs,
1407         .vidioc_querybuf      = vidioc_querybuf,
1408         .vidioc_qbuf          = vidioc_qbuf,
1409         .vidioc_dqbuf         = vidioc_dqbuf,
1410         .vidioc_s_std         = vidioc_s_std,
1411         .vidioc_enum_input    = vidioc_enum_input,
1412         .vidioc_g_input       = vidioc_g_input,
1413         .vidioc_s_input       = vidioc_s_input,
1414         .vidioc_queryctrl     = vidioc_queryctrl,
1415         .vidioc_g_audio       = vidioc_g_audio,
1416         .vidioc_g_audio       = vidioc_s_audio,
1417         .vidioc_g_ctrl        = vidioc_g_ctrl,
1418         .vidioc_s_ctrl        = vidioc_s_ctrl,
1419         .vidioc_streamon      = vidioc_streamon,
1420         .vidioc_streamoff     = vidioc_streamoff,
1421 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1422 /*      .vidiocgmbuf          = vidiocgmbuf, */
1423 #endif
1424         .vidioc_g_tuner       = vidioc_g_tuner,
1425         .vidioc_s_tuner       = vidioc_s_tuner,
1426         .vidioc_g_frequency   = vidioc_g_frequency,
1427         .vidioc_s_frequency   = vidioc_s_frequency,
1428 #ifdef CONFIG_VIDEO_ADV_DEBUG
1429         .vidioc_g_register    = vidioc_g_register,
1430         .vidioc_s_register    = vidioc_s_register,
1431 #endif
1432         .tvnorms              = USBVISION_NORMS,
1433         .current_norm         = V4L2_STD_PAL
1434 };
1435
1436
1437 // Radio template
1438 static const struct file_operations usbvision_radio_fops = {
1439         .owner             = THIS_MODULE,
1440         .open           = usbvision_radio_open,
1441         .release        = usbvision_radio_close,
1442         .ioctl          = video_ioctl2,
1443         .llseek         = no_llseek,
1444         .compat_ioctl  = v4l_compat_ioctl32,
1445 };
1446
1447 static struct video_device usbvision_radio_template=
1448 {
1449         .owner             = THIS_MODULE,
1450         .type           = VID_TYPE_TUNER,
1451         .hardware       = VID_HARDWARE_USBVISION,
1452         .fops           = &usbvision_radio_fops,
1453         .name           = "usbvision-radio",
1454         .release        = video_device_release,
1455         .minor          = -1,
1456         .vidioc_querycap      = vidioc_querycap,
1457         .vidioc_enum_input    = vidioc_enum_input,
1458         .vidioc_g_input       = vidioc_g_input,
1459         .vidioc_s_input       = vidioc_s_input,
1460         .vidioc_queryctrl     = vidioc_queryctrl,
1461         .vidioc_g_audio       = vidioc_g_audio,
1462         .vidioc_g_audio       = vidioc_s_audio,
1463         .vidioc_g_ctrl        = vidioc_g_ctrl,
1464         .vidioc_s_ctrl        = vidioc_s_ctrl,
1465         .vidioc_g_tuner       = vidioc_g_tuner,
1466         .vidioc_s_tuner       = vidioc_s_tuner,
1467         .vidioc_g_frequency   = vidioc_g_frequency,
1468         .vidioc_s_frequency   = vidioc_s_frequency,
1469
1470         .tvnorms              = USBVISION_NORMS,
1471         .current_norm         = V4L2_STD_PAL
1472 };
1473
1474 // vbi template
1475 static const struct file_operations usbvision_vbi_fops = {
1476         .owner             = THIS_MODULE,
1477         .open           = usbvision_vbi_open,
1478         .release        = usbvision_vbi_close,
1479         .ioctl          = usbvision_vbi_ioctl,
1480         .llseek         = no_llseek,
1481         .compat_ioctl  = v4l_compat_ioctl32,
1482 };
1483
1484 static struct video_device usbvision_vbi_template=
1485 {
1486         .owner             = THIS_MODULE,
1487         .type           = VID_TYPE_TUNER,
1488         .hardware       = VID_HARDWARE_USBVISION,
1489         .fops           = &usbvision_vbi_fops,
1490         .release        = video_device_release,
1491         .name           = "usbvision-vbi",
1492         .minor          = -1,
1493 };
1494
1495
1496 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1497                                         struct video_device *vdev_template,
1498                                         char *name)
1499 {
1500         struct usb_device *usb_dev = usbvision->dev;
1501         struct video_device *vdev;
1502
1503         if (usb_dev == NULL) {
1504                 err("%s: usbvision->dev is not set", __FUNCTION__);
1505                 return NULL;
1506         }
1507
1508         vdev = video_device_alloc();
1509         if (NULL == vdev) {
1510                 return NULL;
1511         }
1512         *vdev = *vdev_template;
1513 //      vdev->minor   = -1;
1514         vdev->dev     = &usb_dev->dev;
1515         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1516         video_set_drvdata(vdev, usbvision);
1517         return vdev;
1518 }
1519
1520 // unregister video4linux devices
1521 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1522 {
1523         // vbi Device:
1524         if (usbvision->vbi) {
1525                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1526                        usbvision->vbi->minor & 0x1f);
1527                 if (usbvision->vbi->minor != -1) {
1528                         video_unregister_device(usbvision->vbi);
1529                 } else {
1530                         video_device_release(usbvision->vbi);
1531                 }
1532                 usbvision->vbi = NULL;
1533         }
1534
1535         // Radio Device:
1536         if (usbvision->rdev) {
1537                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1538                        usbvision->rdev->minor & 0x1f);
1539                 if (usbvision->rdev->minor != -1) {
1540                         video_unregister_device(usbvision->rdev);
1541                 } else {
1542                         video_device_release(usbvision->rdev);
1543                 }
1544                 usbvision->rdev = NULL;
1545         }
1546
1547         // Video Device:
1548         if (usbvision->vdev) {
1549                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1550                        usbvision->vdev->minor & 0x1f);
1551                 if (usbvision->vdev->minor != -1) {
1552                         video_unregister_device(usbvision->vdev);
1553                 } else {
1554                         video_device_release(usbvision->vdev);
1555                 }
1556                 usbvision->vdev = NULL;
1557         }
1558 }
1559
1560 // register video4linux devices
1561 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1562 {
1563         // Video Device:
1564         usbvision->vdev = usbvision_vdev_init(usbvision,
1565                                               &usbvision_video_template,
1566                                               "USBVision Video");
1567         if (usbvision->vdev == NULL) {
1568                 goto err_exit;
1569         }
1570         if (video_register_device(usbvision->vdev,
1571                                   VFL_TYPE_GRABBER,
1572                                   video_nr)<0) {
1573                 goto err_exit;
1574         }
1575         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1576                usbvision->nr,usbvision->vdev->minor & 0x1f);
1577
1578         // Radio Device:
1579         if (usbvision_device_data[usbvision->DevModel].Radio) {
1580                 // usbvision has radio
1581                 usbvision->rdev = usbvision_vdev_init(usbvision,
1582                                                       &usbvision_radio_template,
1583                                                       "USBVision Radio");
1584                 if (usbvision->rdev == NULL) {
1585                         goto err_exit;
1586                 }
1587                 if (video_register_device(usbvision->rdev,
1588                                           VFL_TYPE_RADIO,
1589                                           radio_nr)<0) {
1590                         goto err_exit;
1591                 }
1592                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1593                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1594         }
1595         // vbi Device:
1596         if (usbvision_device_data[usbvision->DevModel].vbi) {
1597                 usbvision->vbi = usbvision_vdev_init(usbvision,
1598                                                      &usbvision_vbi_template,
1599                                                      "USBVision VBI");
1600                 if (usbvision->vdev == NULL) {
1601                         goto err_exit;
1602                 }
1603                 if (video_register_device(usbvision->vbi,
1604                                           VFL_TYPE_VBI,
1605                                           vbi_nr)<0) {
1606                         goto err_exit;
1607                 }
1608                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1609                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1610         }
1611         // all done
1612         return 0;
1613
1614  err_exit:
1615         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1616         usbvision_unregister_video(usbvision);
1617         return -1;
1618 }
1619
1620 /*
1621  * usbvision_alloc()
1622  *
1623  * This code allocates the struct usb_usbvision.
1624  * It is filled with default values.
1625  *
1626  * Returns NULL on error, a pointer to usb_usbvision else.
1627  *
1628  */
1629 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1630 {
1631         struct usb_usbvision *usbvision;
1632
1633         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1634             NULL) {
1635                 goto err_exit;
1636         }
1637
1638         usbvision->dev = dev;
1639
1640         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1641
1642         // prepare control urb for control messages during interrupts
1643         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1644         if (usbvision->ctrlUrb == NULL) {
1645                 goto err_exit;
1646         }
1647         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1648         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1649
1650         usbvision_init_powerOffTimer(usbvision);
1651
1652         return usbvision;
1653
1654 err_exit:
1655         if (usbvision && usbvision->ctrlUrb) {
1656                 usb_free_urb(usbvision->ctrlUrb);
1657         }
1658         if (usbvision) {
1659                 kfree(usbvision);
1660         }
1661         return NULL;
1662 }
1663
1664 /*
1665  * usbvision_release()
1666  *
1667  * This code does final release of struct usb_usbvision. This happens
1668  * after the device is disconnected -and- all clients closed their files.
1669  *
1670  */
1671 static void usbvision_release(struct usb_usbvision *usbvision)
1672 {
1673         PDEBUG(DBG_PROBE, "");
1674
1675         down(&usbvision->lock);
1676
1677         usbvision_reset_powerOffTimer(usbvision);
1678
1679         usbvision->initialized = 0;
1680
1681         up(&usbvision->lock);
1682
1683         usbvision_remove_sysfs(usbvision->vdev);
1684         usbvision_unregister_video(usbvision);
1685
1686         if (usbvision->ctrlUrb) {
1687                 usb_free_urb(usbvision->ctrlUrb);
1688         }
1689
1690         kfree(usbvision);
1691
1692         PDEBUG(DBG_PROBE, "success");
1693 }
1694
1695
1696 /*********************** usb interface **********************************/
1697
1698 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1699 {
1700         int model;
1701
1702         if (usbvision == NULL)
1703                 return;
1704
1705         model = usbvision->DevModel;
1706         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1707
1708         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1709                 usbvision->Vin_Reg2_Preset =
1710                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1711         } else {
1712                 usbvision->Vin_Reg2_Preset = 0;
1713         }
1714
1715         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1716
1717         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1718         usbvision->ctl_input = 0;
1719
1720         /* This should be here to make i2c clients to be able to register */
1721         /* first switch off audio */
1722         usbvision_audio_off(usbvision);
1723         if (!PowerOnAtOpen) {
1724                 /* and then power up the noisy tuner */
1725                 usbvision_power_on(usbvision);
1726                 usbvision_i2c_register(usbvision);
1727         }
1728 }
1729
1730 /*
1731  * usbvision_probe()
1732  *
1733  * This procedure queries device descriptor and accepts the interface
1734  * if it looks like USBVISION video device
1735  *
1736  */
1737 static int __devinit usbvision_probe(struct usb_interface *intf,
1738                                      const struct usb_device_id *devid)
1739 {
1740         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1741         struct usb_interface *uif;
1742         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1743         const struct usb_host_interface *interface;
1744         struct usb_usbvision *usbvision = NULL;
1745         const struct usb_endpoint_descriptor *endpoint;
1746         int model,i;
1747
1748         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1749                                 dev->descriptor.idVendor,
1750                                 dev->descriptor.idProduct, ifnum);
1751
1752         model = devid->driver_info;
1753         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1754                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1755                 return -ENODEV;
1756         }
1757         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1758                                 usbvision_device_data[model].ModelString);
1759
1760         if (usbvision_device_data[model].Interface >= 0) {
1761                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1762         } else {
1763                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1764         }
1765         endpoint = &interface->endpoint[1].desc;
1766         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1767             USB_ENDPOINT_XFER_ISOC) {
1768                 err("%s: interface %d. has non-ISO endpoint!",
1769                     __FUNCTION__, ifnum);
1770                 err("%s: Endpoint attributes %d",
1771                     __FUNCTION__, endpoint->bmAttributes);
1772                 return -ENODEV;
1773         }
1774         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1775             USB_DIR_OUT) {
1776                 err("%s: interface %d. has ISO OUT endpoint!",
1777                     __FUNCTION__, ifnum);
1778                 return -ENODEV;
1779         }
1780
1781         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1782                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1783                 return -ENOMEM;
1784         }
1785
1786         if (dev->descriptor.bNumConfigurations > 1) {
1787                 usbvision->bridgeType = BRIDGE_NT1004;
1788         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1789                 usbvision->bridgeType = BRIDGE_NT1005;
1790         } else {
1791                 usbvision->bridgeType = BRIDGE_NT1003;
1792         }
1793         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1794
1795         down(&usbvision->lock);
1796
1797         /* compute alternate max packet sizes */
1798         uif = dev->actconfig->interface[0];
1799
1800         usbvision->num_alt=uif->num_altsetting;
1801         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1802         usbvision->alt_max_pkt_size = kmalloc(32*
1803                                               usbvision->num_alt,GFP_KERNEL);
1804         if (usbvision->alt_max_pkt_size == NULL) {
1805                 err("usbvision: out of memory!\n");
1806                 return -ENOMEM;
1807         }
1808
1809         for (i = 0; i < usbvision->num_alt ; i++) {
1810                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1811                                       wMaxPacketSize);
1812                 usbvision->alt_max_pkt_size[i] =
1813                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1814                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1815                        usbvision->alt_max_pkt_size[i]);
1816         }
1817
1818
1819         usbvision->nr = usbvision_nr++;
1820
1821         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1822         if (usbvision->have_tuner) {
1823                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1824         }
1825
1826         usbvision->tuner_addr = ADDR_UNSET;
1827
1828         usbvision->DevModel = model;
1829         usbvision->remove_pending = 0;
1830         usbvision->iface = ifnum;
1831         usbvision->ifaceAlt = 0;
1832         usbvision->video_endp = endpoint->bEndpointAddress;
1833         usbvision->isocPacketSize = 0;
1834         usbvision->usb_bandwidth = 0;
1835         usbvision->user = 0;
1836         usbvision->streaming = Stream_Off;
1837         usbvision_register_video(usbvision);
1838         usbvision_configure_video(usbvision);
1839         up(&usbvision->lock);
1840
1841
1842         usb_set_intfdata (intf, usbvision);
1843         usbvision_create_sysfs(usbvision->vdev);
1844
1845         PDEBUG(DBG_PROBE, "success");
1846         return 0;
1847 }
1848
1849
1850 /*
1851  * usbvision_disconnect()
1852  *
1853  * This procedure stops all driver activity, deallocates interface-private
1854  * structure (pointed by 'ptr') and after that driver should be removable
1855  * with no ill consequences.
1856  *
1857  */
1858 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1859 {
1860         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1861
1862         PDEBUG(DBG_PROBE, "");
1863
1864         if (usbvision == NULL) {
1865                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1866                 return;
1867         }
1868         usb_set_intfdata (intf, NULL);
1869
1870         down(&usbvision->lock);
1871
1872         // At this time we ask to cancel outstanding URBs
1873         usbvision_stop_isoc(usbvision);
1874
1875         if (usbvision->power) {
1876                 usbvision_i2c_unregister(usbvision);
1877                 usbvision_power_off(usbvision);
1878         }
1879         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1880
1881         usb_put_dev(usbvision->dev);
1882         usbvision->dev = NULL;  // USB device is no more
1883
1884         up(&usbvision->lock);
1885
1886         if (usbvision->user) {
1887                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1888                        __FUNCTION__);
1889                 wake_up_interruptible(&usbvision->wait_frame);
1890                 wake_up_interruptible(&usbvision->wait_stream);
1891         } else {
1892                 usbvision_release(usbvision);
1893         }
1894
1895         PDEBUG(DBG_PROBE, "success");
1896
1897 }
1898
1899 static struct usb_driver usbvision_driver = {
1900         .name           = "usbvision",
1901         .id_table       = usbvision_table,
1902         .probe          = usbvision_probe,
1903         .disconnect     = usbvision_disconnect
1904 };
1905
1906 /*
1907  * usbvision_init()
1908  *
1909  * This code is run to initialize the driver.
1910  *
1911  */
1912 static int __init usbvision_init(void)
1913 {
1914         int errCode;
1915
1916         PDEBUG(DBG_PROBE, "");
1917
1918         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1919         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1920         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1921
1922         /* disable planar mode support unless compression enabled */
1923         if (isocMode != ISOC_MODE_COMPRESS ) {
1924                 // FIXME : not the right way to set supported flag
1925                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1926                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1927         }
1928
1929         errCode = usb_register(&usbvision_driver);
1930
1931         if (errCode == 0) {
1932                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1933                 PDEBUG(DBG_PROBE, "success");
1934         }
1935         return errCode;
1936 }
1937
1938 static void __exit usbvision_exit(void)
1939 {
1940  PDEBUG(DBG_PROBE, "");
1941
1942  usb_deregister(&usbvision_driver);
1943  PDEBUG(DBG_PROBE, "success");
1944 }
1945
1946 module_init(usbvision_init);
1947 module_exit(usbvision_exit);
1948
1949 /*
1950  * Overrides for Emacs so that we follow Linus's tabbing style.
1951  * ---------------------------------------------------------------------------
1952  * Local variables:
1953  * c-basic-offset: 8
1954  * End:
1955  */