639c3396ae7713e7e7dfebf749f17b3ff30fba8e
[linux-2.6.git] / drivers / media / video / usbvision / usbvision-video.c
1 /*
2  * USB USBVISION Video device driver 0.9.10
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/smp_lock.h>
54 #include <linux/mm.h>
55 #include <linux/highmem.h>
56 #include <linux/vmalloc.h>
57 #include <linux/module.h>
58 #include <linux/init.h>
59 #include <linux/spinlock.h>
60 #include <asm/io.h>
61 #include <linux/videodev2.h>
62 #include <linux/i2c.h>
63
64 #include <media/saa7115.h>
65 #include <media/v4l2-common.h>
66 #include <media/v4l2-ioctl.h>
67 #include <media/tuner.h>
68
69 #include <linux/workqueue.h>
70
71 #include "usbvision.h"
72 #include "usbvision-cards.h"
73
74 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
75  Dwaine Garden <DwaineGarden@rogers.com>"
76 #define DRIVER_NAME "usbvision"
77 #define DRIVER_ALIAS "USBVision"
78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
79 #define DRIVER_LICENSE "GPL"
80 #define USBVISION_DRIVER_VERSION_MAJOR 0
81 #define USBVISION_DRIVER_VERSION_MINOR 9
82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
84 USBVISION_DRIVER_VERSION_MINOR,\
85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
87  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
88  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
89
90 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
91
92
93 #ifdef USBVISION_DEBUG
94         #define PDEBUG(level, fmt, args...) { \
95                 if (video_debug & (level)) \
96                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
97                                 __func__, __LINE__ , ## args); \
98         }
99 #else
100         #define PDEBUG(level, fmt, args...) do {} while(0)
101 #endif
102
103 #define DBG_IO          1<<1
104 #define DBG_PROBE       1<<2
105 #define DBG_MMAP        1<<3
106
107 //String operations
108 #define rmspace(str)    while(*str==' ') str++;
109 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
110
111
112 /* sequential number of usbvision device */
113 static int usbvision_nr;
114
115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
116         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
117         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
118         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
119         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
120         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
121         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
122         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
123         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
124 };
125
126 /* Function prototypes */
127 static void usbvision_release(struct usb_usbvision *usbvision);
128
129 /* Default initialization of device driver parameters */
130 /* Set the default format for ISOC endpoint */
131 static int isocMode = ISOC_MODE_COMPRESS;
132 /* Set the default Debug Mode of the device driver */
133 static int video_debug;
134 /* Set the default device to power on at startup */
135 static int PowerOnAtOpen = 1;
136 /* Sequential Number of Video Device */
137 static int video_nr = -1;
138 /* Sequential Number of Radio Device */
139 static int radio_nr = -1;
140 /* Sequential Number of VBI Device */
141 static int vbi_nr = -1;
142
143 /* Grab parameters for the device driver */
144
145 /* Showing parameters under SYSFS */
146 module_param(isocMode, int, 0444);
147 module_param(video_debug, int, 0444);
148 module_param(PowerOnAtOpen, int, 0444);
149 module_param(video_nr, int, 0444);
150 module_param(radio_nr, int, 0444);
151 module_param(vbi_nr, int, 0444);
152
153 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
154 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
155 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
156 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
157 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
158 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
159
160
161 // Misc stuff
162 MODULE_AUTHOR(DRIVER_AUTHOR);
163 MODULE_DESCRIPTION(DRIVER_DESC);
164 MODULE_LICENSE(DRIVER_LICENSE);
165 MODULE_VERSION(USBVISION_VERSION_STRING);
166 MODULE_ALIAS(DRIVER_ALIAS);
167
168
169 /*****************************************************************************/
170 /* SYSFS Code - Copied from the stv680.c usb module.                         */
171 /* Device information is located at /sys/class/video4linux/video0            */
172 /* Device parameters information is located at /sys/module/usbvision         */
173 /* Device USB Information is located at                                      */
174 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
175 /*****************************************************************************/
176
177 #define YES_NO(x) ((x) ? "Yes" : "No")
178
179 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
180 {
181         struct video_device *vdev =
182                 container_of(cd, struct video_device, dev);
183         return video_get_drvdata(vdev);
184 }
185
186 static ssize_t show_version(struct device *cd,
187                             struct device_attribute *attr, char *buf)
188 {
189         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
190 }
191 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
192
193 static ssize_t show_model(struct device *cd,
194                           struct device_attribute *attr, char *buf)
195 {
196         struct video_device *vdev =
197                 container_of(cd, struct video_device, dev);
198         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
199         return sprintf(buf, "%s\n",
200                        usbvision_device_data[usbvision->DevModel].ModelString);
201 }
202 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
203
204 static ssize_t show_hue(struct device *cd,
205                         struct device_attribute *attr, char *buf)
206 {
207         struct video_device *vdev =
208                 container_of(cd, struct video_device, dev);
209         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
210         struct v4l2_control ctrl;
211         ctrl.id = V4L2_CID_HUE;
212         ctrl.value = 0;
213         if(usbvision->user)
214                 call_all(usbvision, core, g_ctrl, &ctrl);
215         return sprintf(buf, "%d\n", ctrl.value);
216 }
217 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
218
219 static ssize_t show_contrast(struct device *cd,
220                              struct device_attribute *attr, char *buf)
221 {
222         struct video_device *vdev =
223                 container_of(cd, struct video_device, dev);
224         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
225         struct v4l2_control ctrl;
226         ctrl.id = V4L2_CID_CONTRAST;
227         ctrl.value = 0;
228         if(usbvision->user)
229                 call_all(usbvision, core, g_ctrl, &ctrl);
230         return sprintf(buf, "%d\n", ctrl.value);
231 }
232 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
233
234 static ssize_t show_brightness(struct device *cd,
235                                struct device_attribute *attr, char *buf)
236 {
237         struct video_device *vdev =
238                 container_of(cd, struct video_device, dev);
239         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
240         struct v4l2_control ctrl;
241         ctrl.id = V4L2_CID_BRIGHTNESS;
242         ctrl.value = 0;
243         if(usbvision->user)
244                 call_all(usbvision, core, g_ctrl, &ctrl);
245         return sprintf(buf, "%d\n", ctrl.value);
246 }
247 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
248
249 static ssize_t show_saturation(struct device *cd,
250                                struct device_attribute *attr, char *buf)
251 {
252         struct video_device *vdev =
253                 container_of(cd, struct video_device, dev);
254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
255         struct v4l2_control ctrl;
256         ctrl.id = V4L2_CID_SATURATION;
257         ctrl.value = 0;
258         if(usbvision->user)
259                 call_all(usbvision, core, g_ctrl, &ctrl);
260         return sprintf(buf, "%d\n", ctrl.value);
261 }
262 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
263
264 static ssize_t show_streaming(struct device *cd,
265                               struct device_attribute *attr, char *buf)
266 {
267         struct video_device *vdev =
268                 container_of(cd, struct video_device, 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 DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
274
275 static ssize_t show_compression(struct device *cd,
276                                 struct device_attribute *attr, char *buf)
277 {
278         struct video_device *vdev =
279                 container_of(cd, struct video_device, dev);
280         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
281         return sprintf(buf, "%s\n",
282                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
283 }
284 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
285
286 static ssize_t show_device_bridge(struct device *cd,
287                                   struct device_attribute *attr, char *buf)
288 {
289         struct video_device *vdev =
290                 container_of(cd, struct video_device, dev);
291         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
292         return sprintf(buf, "%d\n", usbvision->bridgeType);
293 }
294 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
295
296 static void usbvision_create_sysfs(struct video_device *vdev)
297 {
298         int res;
299         if (!vdev)
300                 return;
301         do {
302                 res = device_create_file(&vdev->dev, &dev_attr_version);
303                 if (res<0)
304                         break;
305                 res = device_create_file(&vdev->dev, &dev_attr_model);
306                 if (res<0)
307                         break;
308                 res = device_create_file(&vdev->dev, &dev_attr_hue);
309                 if (res<0)
310                         break;
311                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
312                 if (res<0)
313                         break;
314                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
315                 if (res<0)
316                         break;
317                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
318                 if (res<0)
319                         break;
320                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
321                 if (res<0)
322                         break;
323                 res = device_create_file(&vdev->dev, &dev_attr_compression);
324                 if (res<0)
325                         break;
326                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
327                 if (res>=0)
328                         return;
329         } while (0);
330
331         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
332 }
333
334 static void usbvision_remove_sysfs(struct video_device *vdev)
335 {
336         if (vdev) {
337                 device_remove_file(&vdev->dev, &dev_attr_version);
338                 device_remove_file(&vdev->dev, &dev_attr_model);
339                 device_remove_file(&vdev->dev, &dev_attr_hue);
340                 device_remove_file(&vdev->dev, &dev_attr_contrast);
341                 device_remove_file(&vdev->dev, &dev_attr_brightness);
342                 device_remove_file(&vdev->dev, &dev_attr_saturation);
343                 device_remove_file(&vdev->dev, &dev_attr_streaming);
344                 device_remove_file(&vdev->dev, &dev_attr_compression);
345                 device_remove_file(&vdev->dev, &dev_attr_bridge);
346         }
347 }
348
349 /*
350  * usbvision_open()
351  *
352  * This is part of Video 4 Linux API. The driver can be opened by one
353  * client only (checks internal counter 'usbvision->user'). The procedure
354  * then allocates buffers needed for video processing.
355  *
356  */
357 static int usbvision_v4l2_open(struct file *file)
358 {
359         struct usb_usbvision *usbvision = video_drvdata(file);
360         int errCode = 0;
361
362         PDEBUG(DBG_IO, "open");
363
364         lock_kernel();
365         usbvision_reset_powerOffTimer(usbvision);
366
367         if (usbvision->user)
368                 errCode = -EBUSY;
369         else {
370                 /* Allocate memory for the scratch ring buffer */
371                 errCode = usbvision_scratch_alloc(usbvision);
372                 if (isocMode==ISOC_MODE_COMPRESS) {
373                         /* Allocate intermediate decompression buffers
374                            only if needed */
375                         errCode = usbvision_decompress_alloc(usbvision);
376                 }
377                 if (errCode) {
378                         /* Deallocate all buffers if trouble */
379                         usbvision_scratch_free(usbvision);
380                         usbvision_decompress_free(usbvision);
381                 }
382         }
383
384         /* If so far no errors then we shall start the camera */
385         if (!errCode) {
386                 mutex_lock(&usbvision->lock);
387                 if (usbvision->power == 0) {
388                         usbvision_power_on(usbvision);
389                         usbvision_i2c_register(usbvision);
390                 }
391
392                 /* Send init sequence only once, it's large! */
393                 if (!usbvision->initialized) {
394                         int setup_ok = 0;
395                         setup_ok = usbvision_setup(usbvision,isocMode);
396                         if (setup_ok)
397                                 usbvision->initialized = 1;
398                         else
399                                 errCode = -EBUSY;
400                 }
401
402                 if (!errCode) {
403                         usbvision_begin_streaming(usbvision);
404                         errCode = usbvision_init_isoc(usbvision);
405                         /* device must be initialized before isoc transfer */
406                         usbvision_muxsel(usbvision,0);
407                         usbvision->user++;
408                 } else {
409                         if (PowerOnAtOpen) {
410                                 usbvision_i2c_unregister(usbvision);
411                                 usbvision_power_off(usbvision);
412                                 usbvision->initialized = 0;
413                         }
414                 }
415                 mutex_unlock(&usbvision->lock);
416         }
417
418         /* prepare queues */
419         usbvision_empty_framequeues(usbvision);
420
421         PDEBUG(DBG_IO, "success");
422         unlock_kernel();
423         return errCode;
424 }
425
426 /*
427  * usbvision_v4l2_close()
428  *
429  * This is part of Video 4 Linux API. The procedure
430  * stops streaming and deallocates all buffers that were earlier
431  * allocated in usbvision_v4l2_open().
432  *
433  */
434 static int usbvision_v4l2_close(struct file *file)
435 {
436         struct usb_usbvision *usbvision = video_drvdata(file);
437
438         PDEBUG(DBG_IO, "close");
439         mutex_lock(&usbvision->lock);
440
441         usbvision_audio_off(usbvision);
442         usbvision_restart_isoc(usbvision);
443         usbvision_stop_isoc(usbvision);
444
445         usbvision_decompress_free(usbvision);
446         usbvision_frames_free(usbvision);
447         usbvision_empty_framequeues(usbvision);
448         usbvision_scratch_free(usbvision);
449
450         usbvision->user--;
451
452         if (PowerOnAtOpen) {
453                 /* power off in a little while
454                    to avoid off/on every close/open short sequences */
455                 usbvision_set_powerOffTimer(usbvision);
456                 usbvision->initialized = 0;
457         }
458
459         mutex_unlock(&usbvision->lock);
460
461         if (usbvision->remove_pending) {
462                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
463                 usbvision_release(usbvision);
464         }
465
466         PDEBUG(DBG_IO, "success");
467         return 0;
468 }
469
470
471 /*
472  * usbvision_ioctl()
473  *
474  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
475  *
476  */
477 #ifdef CONFIG_VIDEO_ADV_DEBUG
478 static int vidioc_g_register (struct file *file, void *priv,
479                                 struct v4l2_dbg_register *reg)
480 {
481         struct usb_usbvision *usbvision = video_drvdata(file);
482         int errCode;
483
484         if (!v4l2_chip_match_host(&reg->match))
485                 return -EINVAL;
486         /* NT100x has a 8-bit register space */
487         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
488         if (errCode < 0) {
489                 dev_err(&usbvision->vdev->dev,
490                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
491                                 __func__, errCode);
492                 return errCode;
493         }
494         reg->val = errCode;
495         reg->size = 1;
496         return 0;
497 }
498
499 static int vidioc_s_register (struct file *file, void *priv,
500                                 struct v4l2_dbg_register *reg)
501 {
502         struct usb_usbvision *usbvision = video_drvdata(file);
503         int errCode;
504
505         if (!v4l2_chip_match_host(&reg->match))
506                 return -EINVAL;
507         /* NT100x has a 8-bit register space */
508         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
509         if (errCode < 0) {
510                 dev_err(&usbvision->vdev->dev,
511                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
512                                 __func__, errCode);
513                 return errCode;
514         }
515         return 0;
516 }
517 #endif
518
519 static int vidioc_querycap (struct file *file, void  *priv,
520                                         struct v4l2_capability *vc)
521 {
522         struct usb_usbvision *usbvision = video_drvdata(file);
523
524         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
525         strlcpy(vc->card,
526                 usbvision_device_data[usbvision->DevModel].ModelString,
527                 sizeof(vc->card));
528         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
529         vc->version = USBVISION_DRIVER_VERSION;
530         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
531                 V4L2_CAP_AUDIO |
532                 V4L2_CAP_READWRITE |
533                 V4L2_CAP_STREAMING |
534                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
535         return 0;
536 }
537
538 static int vidioc_enum_input (struct file *file, void *priv,
539                                 struct v4l2_input *vi)
540 {
541         struct usb_usbvision *usbvision = video_drvdata(file);
542         int chan;
543
544         if (vi->index >= usbvision->video_inputs)
545                 return -EINVAL;
546         if (usbvision->have_tuner) {
547                 chan = vi->index;
548         } else {
549                 chan = vi->index + 1; /*skip Television string*/
550         }
551         /* Determine the requested input characteristics
552            specific for each usbvision card model */
553         switch(chan) {
554         case 0:
555                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
556                         strcpy(vi->name, "White Video Input");
557                 } else {
558                         strcpy(vi->name, "Television");
559                         vi->type = V4L2_INPUT_TYPE_TUNER;
560                         vi->audioset = 1;
561                         vi->tuner = chan;
562                         vi->std = USBVISION_NORMS;
563                 }
564                 break;
565         case 1:
566                 vi->type = V4L2_INPUT_TYPE_CAMERA;
567                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
568                         strcpy(vi->name, "Green Video Input");
569                 } else {
570                         strcpy(vi->name, "Composite Video Input");
571                 }
572                 vi->std = V4L2_STD_PAL;
573                 break;
574         case 2:
575                 vi->type = V4L2_INPUT_TYPE_CAMERA;
576                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
577                         strcpy(vi->name, "Yellow Video Input");
578                 } else {
579                         strcpy(vi->name, "S-Video Input");
580                 }
581                 vi->std = V4L2_STD_PAL;
582                 break;
583         case 3:
584                 vi->type = V4L2_INPUT_TYPE_CAMERA;
585                 strcpy(vi->name, "Red Video Input");
586                 vi->std = V4L2_STD_PAL;
587                 break;
588         }
589         return 0;
590 }
591
592 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
593 {
594         struct usb_usbvision *usbvision = video_drvdata(file);
595
596         *input = usbvision->ctl_input;
597         return 0;
598 }
599
600 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
601 {
602         struct usb_usbvision *usbvision = video_drvdata(file);
603
604         if (input >= usbvision->video_inputs)
605                 return -EINVAL;
606
607         mutex_lock(&usbvision->lock);
608         usbvision_muxsel(usbvision, input);
609         usbvision_set_input(usbvision);
610         usbvision_set_output(usbvision,
611                              usbvision->curwidth,
612                              usbvision->curheight);
613         mutex_unlock(&usbvision->lock);
614         return 0;
615 }
616
617 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
618 {
619         struct usb_usbvision *usbvision = video_drvdata(file);
620
621         usbvision->tvnormId=*id;
622
623         mutex_lock(&usbvision->lock);
624         call_all(usbvision, core, s_std, usbvision->tvnormId);
625         mutex_unlock(&usbvision->lock);
626         /* propagate the change to the decoder */
627         usbvision_muxsel(usbvision, usbvision->ctl_input);
628
629         return 0;
630 }
631
632 static int vidioc_g_tuner (struct file *file, void *priv,
633                                 struct v4l2_tuner *vt)
634 {
635         struct usb_usbvision *usbvision = video_drvdata(file);
636
637         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
638                 return -EINVAL;
639         if(usbvision->radio) {
640                 strcpy(vt->name, "Radio");
641                 vt->type = V4L2_TUNER_RADIO;
642         } else {
643                 strcpy(vt->name, "Television");
644         }
645         /* Let clients fill in the remainder of this struct */
646         call_all(usbvision, tuner, g_tuner, vt);
647
648         return 0;
649 }
650
651 static int vidioc_s_tuner (struct file *file, void *priv,
652                                 struct v4l2_tuner *vt)
653 {
654         struct usb_usbvision *usbvision = video_drvdata(file);
655
656         // Only no or one tuner for now
657         if (!usbvision->have_tuner || vt->index)
658                 return -EINVAL;
659         /* let clients handle this */
660         call_all(usbvision, tuner, s_tuner, vt);
661
662         return 0;
663 }
664
665 static int vidioc_g_frequency (struct file *file, void *priv,
666                                 struct v4l2_frequency *freq)
667 {
668         struct usb_usbvision *usbvision = video_drvdata(file);
669
670         freq->tuner = 0; // Only one tuner
671         if(usbvision->radio) {
672                 freq->type = V4L2_TUNER_RADIO;
673         } else {
674                 freq->type = V4L2_TUNER_ANALOG_TV;
675         }
676         freq->frequency = usbvision->freq;
677
678         return 0;
679 }
680
681 static int vidioc_s_frequency (struct file *file, void *priv,
682                                 struct v4l2_frequency *freq)
683 {
684         struct usb_usbvision *usbvision = video_drvdata(file);
685
686         // Only no or one tuner for now
687         if (!usbvision->have_tuner || freq->tuner)
688                 return -EINVAL;
689
690         usbvision->freq = freq->frequency;
691         call_all(usbvision, tuner, s_frequency, freq);
692
693         return 0;
694 }
695
696 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
697 {
698         struct usb_usbvision *usbvision = video_drvdata(file);
699
700         if(usbvision->radio) {
701                 strcpy(a->name,"Radio");
702         } else {
703                 strcpy(a->name, "TV");
704         }
705
706         return 0;
707 }
708
709 static int vidioc_s_audio (struct file *file, void *fh,
710                           struct v4l2_audio *a)
711 {
712         if(a->index) {
713                 return -EINVAL;
714         }
715
716         return 0;
717 }
718
719 static int vidioc_queryctrl (struct file *file, void *priv,
720                             struct v4l2_queryctrl *ctrl)
721 {
722         struct usb_usbvision *usbvision = video_drvdata(file);
723
724         call_all(usbvision, core, queryctrl, ctrl);
725
726         if (!ctrl->type)
727                 return -EINVAL;
728
729         return 0;
730 }
731
732 static int vidioc_g_ctrl (struct file *file, void *priv,
733                                 struct v4l2_control *ctrl)
734 {
735         struct usb_usbvision *usbvision = video_drvdata(file);
736         call_all(usbvision, core, g_ctrl, ctrl);
737
738         return 0;
739 }
740
741 static int vidioc_s_ctrl (struct file *file, void *priv,
742                                 struct v4l2_control *ctrl)
743 {
744         struct usb_usbvision *usbvision = video_drvdata(file);
745         call_all(usbvision, core, s_ctrl, ctrl);
746
747         return 0;
748 }
749
750 static int vidioc_reqbufs (struct file *file,
751                            void *priv, struct v4l2_requestbuffers *vr)
752 {
753         struct usb_usbvision *usbvision = video_drvdata(file);
754         int ret;
755
756         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
757
758         /* Check input validity:
759            the user must do a VIDEO CAPTURE and MMAP method. */
760         if (vr->memory != V4L2_MEMORY_MMAP)
761                 return -EINVAL;
762
763         if(usbvision->streaming == Stream_On) {
764                 if ((ret = usbvision_stream_interrupt(usbvision)))
765                         return ret;
766         }
767
768         usbvision_frames_free(usbvision);
769         usbvision_empty_framequeues(usbvision);
770         vr->count = usbvision_frames_alloc(usbvision,vr->count);
771
772         usbvision->curFrame = NULL;
773
774         return 0;
775 }
776
777 static int vidioc_querybuf (struct file *file,
778                             void *priv, struct v4l2_buffer *vb)
779 {
780         struct usb_usbvision *usbvision = video_drvdata(file);
781         struct usbvision_frame *frame;
782
783         /* FIXME : must control
784            that buffers are mapped (VIDIOC_REQBUFS has been called) */
785         if(vb->index>=usbvision->num_frames)  {
786                 return -EINVAL;
787         }
788         /* Updating the corresponding frame state */
789         vb->flags = 0;
790         frame = &usbvision->frame[vb->index];
791         if(frame->grabstate >= FrameState_Ready)
792                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
793         if(frame->grabstate >= FrameState_Done)
794                 vb->flags |= V4L2_BUF_FLAG_DONE;
795         if(frame->grabstate == FrameState_Unused)
796                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
797         vb->memory = V4L2_MEMORY_MMAP;
798
799         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
800
801         vb->memory = V4L2_MEMORY_MMAP;
802         vb->field = V4L2_FIELD_NONE;
803         vb->length = usbvision->curwidth*
804                 usbvision->curheight*
805                 usbvision->palette.bytes_per_pixel;
806         vb->timestamp = usbvision->frame[vb->index].timestamp;
807         vb->sequence = usbvision->frame[vb->index].sequence;
808         return 0;
809 }
810
811 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
812 {
813         struct usb_usbvision *usbvision = video_drvdata(file);
814         struct usbvision_frame *frame;
815         unsigned long lock_flags;
816
817         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
818         if(vb->index>=usbvision->num_frames)  {
819                 return -EINVAL;
820         }
821
822         frame = &usbvision->frame[vb->index];
823
824         if (frame->grabstate != FrameState_Unused) {
825                 return -EAGAIN;
826         }
827
828         /* Mark it as ready and enqueue frame */
829         frame->grabstate = FrameState_Ready;
830         frame->scanstate = ScanState_Scanning;
831         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
832
833         vb->flags &= ~V4L2_BUF_FLAG_DONE;
834
835         /* set v4l2_format index */
836         frame->v4l2_format = usbvision->palette;
837
838         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
839         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
840         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
841
842         return 0;
843 }
844
845 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
846 {
847         struct usb_usbvision *usbvision = video_drvdata(file);
848         int ret;
849         struct usbvision_frame *f;
850         unsigned long lock_flags;
851
852         if (list_empty(&(usbvision->outqueue))) {
853                 if (usbvision->streaming == Stream_Idle)
854                         return -EINVAL;
855                 ret = wait_event_interruptible
856                         (usbvision->wait_frame,
857                          !list_empty(&(usbvision->outqueue)));
858                 if (ret)
859                         return ret;
860         }
861
862         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
863         f = list_entry(usbvision->outqueue.next,
864                        struct usbvision_frame, frame);
865         list_del(usbvision->outqueue.next);
866         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
867
868         f->grabstate = FrameState_Unused;
869
870         vb->memory = V4L2_MEMORY_MMAP;
871         vb->flags = V4L2_BUF_FLAG_MAPPED |
872                 V4L2_BUF_FLAG_QUEUED |
873                 V4L2_BUF_FLAG_DONE;
874         vb->index = f->index;
875         vb->sequence = f->sequence;
876         vb->timestamp = f->timestamp;
877         vb->field = V4L2_FIELD_NONE;
878         vb->bytesused = f->scanlength;
879
880         return 0;
881 }
882
883 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
884 {
885         struct usb_usbvision *usbvision = video_drvdata(file);
886
887         usbvision->streaming = Stream_On;
888         call_all(usbvision, video, s_stream, 1);
889
890         return 0;
891 }
892
893 static int vidioc_streamoff(struct file *file,
894                             void *priv, enum v4l2_buf_type type)
895 {
896         struct usb_usbvision *usbvision = video_drvdata(file);
897
898         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
899                 return -EINVAL;
900
901         if(usbvision->streaming == Stream_On) {
902                 usbvision_stream_interrupt(usbvision);
903                 /* Stop all video streamings */
904                 call_all(usbvision, video, s_stream, 0);
905         }
906         usbvision_empty_framequeues(usbvision);
907
908         return 0;
909 }
910
911 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
912                                         struct v4l2_fmtdesc *vfd)
913 {
914         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
915                 return -EINVAL;
916         }
917         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
918         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
919         return 0;
920 }
921
922 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
923                                         struct v4l2_format *vf)
924 {
925         struct usb_usbvision *usbvision = video_drvdata(file);
926         vf->fmt.pix.width = usbvision->curwidth;
927         vf->fmt.pix.height = usbvision->curheight;
928         vf->fmt.pix.pixelformat = usbvision->palette.format;
929         vf->fmt.pix.bytesperline =
930                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
931         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
932         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
933         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
934
935         return 0;
936 }
937
938 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
939                                struct v4l2_format *vf)
940 {
941         struct usb_usbvision *usbvision = video_drvdata(file);
942         int formatIdx;
943
944         /* Find requested format in available ones */
945         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
946                 if(vf->fmt.pix.pixelformat ==
947                    usbvision_v4l2_format[formatIdx].format) {
948                         usbvision->palette = usbvision_v4l2_format[formatIdx];
949                         break;
950                 }
951         }
952         /* robustness */
953         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
954                 return -EINVAL;
955         }
956         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
957         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
958
959         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
960                 usbvision->palette.bytes_per_pixel;
961         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
962
963         return 0;
964 }
965
966 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
967                                struct v4l2_format *vf)
968 {
969         struct usb_usbvision *usbvision = video_drvdata(file);
970         int ret;
971
972         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
973                 return ret;
974         }
975
976         /* stop io in case it is already in progress */
977         if(usbvision->streaming == Stream_On) {
978                 if ((ret = usbvision_stream_interrupt(usbvision)))
979                         return ret;
980         }
981         usbvision_frames_free(usbvision);
982         usbvision_empty_framequeues(usbvision);
983
984         usbvision->curFrame = NULL;
985
986         /* by now we are committed to the new data... */
987         mutex_lock(&usbvision->lock);
988         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
989         mutex_unlock(&usbvision->lock);
990
991         return 0;
992 }
993
994 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
995                       size_t count, loff_t *ppos)
996 {
997         struct usb_usbvision *usbvision = video_drvdata(file);
998         int noblock = file->f_flags & O_NONBLOCK;
999         unsigned long lock_flags;
1000
1001         int ret,i;
1002         struct usbvision_frame *frame;
1003
1004         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1005                (unsigned long)count, noblock);
1006
1007         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1008                 return -EFAULT;
1009
1010         /* This entry point is compatible with the mmap routines
1011            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1012            to get frames or call read on the device. */
1013         if(!usbvision->num_frames) {
1014                 /* First, allocate some frames to work with
1015                    if this has not been done with VIDIOC_REQBUF */
1016                 usbvision_frames_free(usbvision);
1017                 usbvision_empty_framequeues(usbvision);
1018                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1019         }
1020
1021         if(usbvision->streaming != Stream_On) {
1022                 /* no stream is running, make it running ! */
1023                 usbvision->streaming = Stream_On;
1024                 call_all(usbvision, video, s_stream, 1);
1025         }
1026
1027         /* Then, enqueue as many frames as possible
1028            (like a user of VIDIOC_QBUF would do) */
1029         for(i=0;i<usbvision->num_frames;i++) {
1030                 frame = &usbvision->frame[i];
1031                 if(frame->grabstate == FrameState_Unused) {
1032                         /* Mark it as ready and enqueue frame */
1033                         frame->grabstate = FrameState_Ready;
1034                         frame->scanstate = ScanState_Scanning;
1035                         /* Accumulated in usbvision_parse_data() */
1036                         frame->scanlength = 0;
1037
1038                         /* set v4l2_format index */
1039                         frame->v4l2_format = usbvision->palette;
1040
1041                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1042                         list_add_tail(&frame->frame, &usbvision->inqueue);
1043                         spin_unlock_irqrestore(&usbvision->queue_lock,
1044                                                lock_flags);
1045                 }
1046         }
1047
1048         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1049         if (list_empty(&(usbvision->outqueue))) {
1050                 if(noblock)
1051                         return -EAGAIN;
1052
1053                 ret = wait_event_interruptible
1054                         (usbvision->wait_frame,
1055                          !list_empty(&(usbvision->outqueue)));
1056                 if (ret)
1057                         return ret;
1058         }
1059
1060         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1061         frame = list_entry(usbvision->outqueue.next,
1062                            struct usbvision_frame, frame);
1063         list_del(usbvision->outqueue.next);
1064         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1065
1066         /* An error returns an empty frame */
1067         if (frame->grabstate == FrameState_Error) {
1068                 frame->bytes_read = 0;
1069                 return 0;
1070         }
1071
1072         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1073                __func__,
1074                frame->index, frame->bytes_read, frame->scanlength);
1075
1076         /* copy bytes to user space; we allow for partials reads */
1077         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1078                 count = frame->scanlength - frame->bytes_read;
1079
1080         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1081                 return -EFAULT;
1082         }
1083
1084         frame->bytes_read += count;
1085         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1086                __func__,
1087                (unsigned long)count, frame->bytes_read);
1088
1089         /* For now, forget the frame if it has not been read in one shot. */
1090 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1091                 frame->bytes_read = 0;
1092
1093                 /* Mark it as available to be used again. */
1094                 frame->grabstate = FrameState_Unused;
1095 /*      } */
1096
1097         return count;
1098 }
1099
1100 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1101 {
1102         unsigned long size = vma->vm_end - vma->vm_start,
1103                 start = vma->vm_start;
1104         void *pos;
1105         u32 i;
1106         struct usb_usbvision *usbvision = video_drvdata(file);
1107
1108         PDEBUG(DBG_MMAP, "mmap");
1109
1110         mutex_lock(&usbvision->lock);
1111
1112         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1113                 mutex_unlock(&usbvision->lock);
1114                 return -EFAULT;
1115         }
1116
1117         if (!(vma->vm_flags & VM_WRITE) ||
1118             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1119                 mutex_unlock(&usbvision->lock);
1120                 return -EINVAL;
1121         }
1122
1123         for (i = 0; i < usbvision->num_frames; i++) {
1124                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1125                     vma->vm_pgoff)
1126                         break;
1127         }
1128         if (i == usbvision->num_frames) {
1129                 PDEBUG(DBG_MMAP,
1130                        "mmap: user supplied mapping address is out of range");
1131                 mutex_unlock(&usbvision->lock);
1132                 return -EINVAL;
1133         }
1134
1135         /* VM_IO is eventually going to replace PageReserved altogether */
1136         vma->vm_flags |= VM_IO;
1137         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1138
1139         pos = usbvision->frame[i].data;
1140         while (size > 0) {
1141
1142                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1143                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1144                         mutex_unlock(&usbvision->lock);
1145                         return -EAGAIN;
1146                 }
1147                 start += PAGE_SIZE;
1148                 pos += PAGE_SIZE;
1149                 size -= PAGE_SIZE;
1150         }
1151
1152         mutex_unlock(&usbvision->lock);
1153         return 0;
1154 }
1155
1156
1157 /*
1158  * Here comes the stuff for radio on usbvision based devices
1159  *
1160  */
1161 static int usbvision_radio_open(struct file *file)
1162 {
1163         struct usb_usbvision *usbvision = video_drvdata(file);
1164         int errCode = 0;
1165
1166         PDEBUG(DBG_IO, "%s:", __func__);
1167
1168         mutex_lock(&usbvision->lock);
1169
1170         if (usbvision->user) {
1171                 dev_err(&usbvision->rdev->dev,
1172                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1173                                 __func__);
1174                 errCode = -EBUSY;
1175         }
1176         else {
1177                 if(PowerOnAtOpen) {
1178                         usbvision_reset_powerOffTimer(usbvision);
1179                         if (usbvision->power == 0) {
1180                                 usbvision_power_on(usbvision);
1181                                 usbvision_i2c_register(usbvision);
1182                         }
1183                 }
1184
1185                 /* Alternate interface 1 is is the biggest frame size */
1186                 errCode = usbvision_set_alternate(usbvision);
1187                 if (errCode < 0) {
1188                         usbvision->last_error = errCode;
1189                         errCode = -EBUSY;
1190                         goto out;
1191                 }
1192
1193                 // If so far no errors then we shall start the radio
1194                 usbvision->radio = 1;
1195                 call_all(usbvision, tuner, s_radio);
1196                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1197                 usbvision->user++;
1198         }
1199
1200         if (errCode) {
1201                 if (PowerOnAtOpen) {
1202                         usbvision_i2c_unregister(usbvision);
1203                         usbvision_power_off(usbvision);
1204                         usbvision->initialized = 0;
1205                 }
1206         }
1207 out:
1208         mutex_unlock(&usbvision->lock);
1209         return errCode;
1210 }
1211
1212
1213 static int usbvision_radio_close(struct file *file)
1214 {
1215         struct usb_usbvision *usbvision = video_drvdata(file);
1216         int errCode = 0;
1217
1218         PDEBUG(DBG_IO, "");
1219
1220         mutex_lock(&usbvision->lock);
1221
1222         /* Set packet size to 0 */
1223         usbvision->ifaceAlt=0;
1224         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1225                                     usbvision->ifaceAlt);
1226
1227         usbvision_audio_off(usbvision);
1228         usbvision->radio=0;
1229         usbvision->user--;
1230
1231         if (PowerOnAtOpen) {
1232                 usbvision_set_powerOffTimer(usbvision);
1233                 usbvision->initialized = 0;
1234         }
1235
1236         mutex_unlock(&usbvision->lock);
1237
1238         if (usbvision->remove_pending) {
1239                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1240                 usbvision_release(usbvision);
1241         }
1242
1243         PDEBUG(DBG_IO, "success");
1244         return errCode;
1245 }
1246
1247 /*
1248  * Here comes the stuff for vbi on usbvision based devices
1249  *
1250  */
1251 static int usbvision_vbi_open(struct file *file)
1252 {
1253         /* TODO */
1254         return -ENODEV;
1255 }
1256
1257 static int usbvision_vbi_close(struct file *file)
1258 {
1259         /* TODO */
1260         return -ENODEV;
1261 }
1262
1263 static long usbvision_do_vbi_ioctl(struct file *file,
1264                                  unsigned int cmd, void *arg)
1265 {
1266         /* TODO */
1267         return -ENOIOCTLCMD;
1268 }
1269
1270 static long usbvision_vbi_ioctl(struct file *file,
1271                        unsigned int cmd, unsigned long arg)
1272 {
1273         return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1274 }
1275
1276
1277 //
1278 // Video registration stuff
1279 //
1280
1281 // Video template
1282 static const struct v4l2_file_operations usbvision_fops = {
1283         .owner             = THIS_MODULE,
1284         .open           = usbvision_v4l2_open,
1285         .release        = usbvision_v4l2_close,
1286         .read           = usbvision_v4l2_read,
1287         .mmap           = usbvision_v4l2_mmap,
1288         .ioctl          = video_ioctl2,
1289 /*      .poll          = video_poll, */
1290 };
1291
1292 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1293         .vidioc_querycap      = vidioc_querycap,
1294         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1295         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1296         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1297         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1298         .vidioc_reqbufs       = vidioc_reqbufs,
1299         .vidioc_querybuf      = vidioc_querybuf,
1300         .vidioc_qbuf          = vidioc_qbuf,
1301         .vidioc_dqbuf         = vidioc_dqbuf,
1302         .vidioc_s_std         = vidioc_s_std,
1303         .vidioc_enum_input    = vidioc_enum_input,
1304         .vidioc_g_input       = vidioc_g_input,
1305         .vidioc_s_input       = vidioc_s_input,
1306         .vidioc_queryctrl     = vidioc_queryctrl,
1307         .vidioc_g_audio       = vidioc_g_audio,
1308         .vidioc_s_audio       = vidioc_s_audio,
1309         .vidioc_g_ctrl        = vidioc_g_ctrl,
1310         .vidioc_s_ctrl        = vidioc_s_ctrl,
1311         .vidioc_streamon      = vidioc_streamon,
1312         .vidioc_streamoff     = vidioc_streamoff,
1313 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1314 /*      .vidiocgmbuf          = vidiocgmbuf, */
1315 #endif
1316         .vidioc_g_tuner       = vidioc_g_tuner,
1317         .vidioc_s_tuner       = vidioc_s_tuner,
1318         .vidioc_g_frequency   = vidioc_g_frequency,
1319         .vidioc_s_frequency   = vidioc_s_frequency,
1320 #ifdef CONFIG_VIDEO_ADV_DEBUG
1321         .vidioc_g_register    = vidioc_g_register,
1322         .vidioc_s_register    = vidioc_s_register,
1323 #endif
1324 };
1325
1326 static struct video_device usbvision_video_template = {
1327         .fops           = &usbvision_fops,
1328         .ioctl_ops      = &usbvision_ioctl_ops,
1329         .name           = "usbvision-video",
1330         .release        = video_device_release,
1331         .minor          = -1,
1332         .tvnorms              = USBVISION_NORMS,
1333         .current_norm         = V4L2_STD_PAL
1334 };
1335
1336
1337 // Radio template
1338 static const struct v4l2_file_operations usbvision_radio_fops = {
1339         .owner             = THIS_MODULE,
1340         .open           = usbvision_radio_open,
1341         .release        = usbvision_radio_close,
1342         .ioctl          = video_ioctl2,
1343 };
1344
1345 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1346         .vidioc_querycap      = vidioc_querycap,
1347         .vidioc_enum_input    = vidioc_enum_input,
1348         .vidioc_g_input       = vidioc_g_input,
1349         .vidioc_s_input       = vidioc_s_input,
1350         .vidioc_queryctrl     = vidioc_queryctrl,
1351         .vidioc_g_audio       = vidioc_g_audio,
1352         .vidioc_s_audio       = vidioc_s_audio,
1353         .vidioc_g_ctrl        = vidioc_g_ctrl,
1354         .vidioc_s_ctrl        = vidioc_s_ctrl,
1355         .vidioc_g_tuner       = vidioc_g_tuner,
1356         .vidioc_s_tuner       = vidioc_s_tuner,
1357         .vidioc_g_frequency   = vidioc_g_frequency,
1358         .vidioc_s_frequency   = vidioc_s_frequency,
1359 };
1360
1361 static struct video_device usbvision_radio_template = {
1362         .fops           = &usbvision_radio_fops,
1363         .name           = "usbvision-radio",
1364         .release        = video_device_release,
1365         .minor          = -1,
1366         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1367
1368         .tvnorms              = USBVISION_NORMS,
1369         .current_norm         = V4L2_STD_PAL
1370 };
1371
1372 // vbi template
1373 static const struct v4l2_file_operations usbvision_vbi_fops = {
1374         .owner             = THIS_MODULE,
1375         .open           = usbvision_vbi_open,
1376         .release        = usbvision_vbi_close,
1377         .ioctl          = usbvision_vbi_ioctl,
1378 };
1379
1380 static struct video_device usbvision_vbi_template=
1381 {
1382         .fops           = &usbvision_vbi_fops,
1383         .release        = video_device_release,
1384         .name           = "usbvision-vbi",
1385         .minor          = -1,
1386 };
1387
1388
1389 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1390                                         struct video_device *vdev_template,
1391                                         char *name)
1392 {
1393         struct usb_device *usb_dev = usbvision->dev;
1394         struct video_device *vdev;
1395
1396         if (usb_dev == NULL) {
1397                 dev_err(&usbvision->dev->dev,
1398                         "%s: usbvision->dev is not set\n", __func__);
1399                 return NULL;
1400         }
1401
1402         vdev = video_device_alloc();
1403         if (NULL == vdev) {
1404                 return NULL;
1405         }
1406         *vdev = *vdev_template;
1407 //      vdev->minor   = -1;
1408         vdev->v4l2_dev = &usbvision->v4l2_dev;
1409         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1410         video_set_drvdata(vdev, usbvision);
1411         return vdev;
1412 }
1413
1414 // unregister video4linux devices
1415 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1416 {
1417         // vbi Device:
1418         if (usbvision->vbi) {
1419                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1420                        video_device_node_name(usbvision->vbi));
1421                 if (usbvision->vbi->minor != -1) {
1422                         video_unregister_device(usbvision->vbi);
1423                 } else {
1424                         video_device_release(usbvision->vbi);
1425                 }
1426                 usbvision->vbi = NULL;
1427         }
1428
1429         // Radio Device:
1430         if (usbvision->rdev) {
1431                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1432                        video_device_node_name(usbvision->rdev));
1433                 if (usbvision->rdev->minor != -1) {
1434                         video_unregister_device(usbvision->rdev);
1435                 } else {
1436                         video_device_release(usbvision->rdev);
1437                 }
1438                 usbvision->rdev = NULL;
1439         }
1440
1441         // Video Device:
1442         if (usbvision->vdev) {
1443                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1444                        video_device_node_name(usbvision->vdev));
1445                 if (usbvision->vdev->minor != -1) {
1446                         video_unregister_device(usbvision->vdev);
1447                 } else {
1448                         video_device_release(usbvision->vdev);
1449                 }
1450                 usbvision->vdev = NULL;
1451         }
1452 }
1453
1454 // register video4linux devices
1455 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1456 {
1457         // Video Device:
1458         usbvision->vdev = usbvision_vdev_init(usbvision,
1459                                               &usbvision_video_template,
1460                                               "USBVision Video");
1461         if (usbvision->vdev == NULL) {
1462                 goto err_exit;
1463         }
1464         if (video_register_device(usbvision->vdev,
1465                                   VFL_TYPE_GRABBER,
1466                                   video_nr)<0) {
1467                 goto err_exit;
1468         }
1469         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1470                usbvision->nr, video_device_node_name(usbvision->vdev));
1471
1472         // Radio Device:
1473         if (usbvision_device_data[usbvision->DevModel].Radio) {
1474                 // usbvision has radio
1475                 usbvision->rdev = usbvision_vdev_init(usbvision,
1476                                                       &usbvision_radio_template,
1477                                                       "USBVision Radio");
1478                 if (usbvision->rdev == NULL) {
1479                         goto err_exit;
1480                 }
1481                 if (video_register_device(usbvision->rdev,
1482                                           VFL_TYPE_RADIO,
1483                                           radio_nr)<0) {
1484                         goto err_exit;
1485                 }
1486                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1487                        usbvision->nr, video_device_node_name(usbvision->rdev));
1488         }
1489         // vbi Device:
1490         if (usbvision_device_data[usbvision->DevModel].vbi) {
1491                 usbvision->vbi = usbvision_vdev_init(usbvision,
1492                                                      &usbvision_vbi_template,
1493                                                      "USBVision VBI");
1494                 if (usbvision->vdev == NULL) {
1495                         goto err_exit;
1496                 }
1497                 if (video_register_device(usbvision->vbi,
1498                                           VFL_TYPE_VBI,
1499                                           vbi_nr)<0) {
1500                         goto err_exit;
1501                 }
1502                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device %s [v4l2] (Not Working Yet!)\n",
1503                        usbvision->nr, video_device_node_name(usbvision->vbi));
1504         }
1505         // all done
1506         return 0;
1507
1508  err_exit:
1509         dev_err(&usbvision->dev->dev,
1510                 "USBVision[%d]: video_register_device() failed\n",
1511                         usbvision->nr);
1512         usbvision_unregister_video(usbvision);
1513         return -1;
1514 }
1515
1516 /*
1517  * usbvision_alloc()
1518  *
1519  * This code allocates the struct usb_usbvision.
1520  * It is filled with default values.
1521  *
1522  * Returns NULL on error, a pointer to usb_usbvision else.
1523  *
1524  */
1525 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1526                                              struct usb_interface *intf)
1527 {
1528         struct usb_usbvision *usbvision;
1529
1530         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1531         if (usbvision == NULL)
1532                 return NULL;
1533
1534         usbvision->dev = dev;
1535         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1536                 goto err_free;
1537
1538         mutex_init(&usbvision->lock);   /* available */
1539
1540         // prepare control urb for control messages during interrupts
1541         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1542         if (usbvision->ctrlUrb == NULL)
1543                 goto err_unreg;
1544         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1545
1546         usbvision_init_powerOffTimer(usbvision);
1547
1548         return usbvision;
1549
1550 err_unreg:
1551         v4l2_device_unregister(&usbvision->v4l2_dev);
1552 err_free:
1553         kfree(usbvision);
1554         return NULL;
1555 }
1556
1557 /*
1558  * usbvision_release()
1559  *
1560  * This code does final release of struct usb_usbvision. This happens
1561  * after the device is disconnected -and- all clients closed their files.
1562  *
1563  */
1564 static void usbvision_release(struct usb_usbvision *usbvision)
1565 {
1566         PDEBUG(DBG_PROBE, "");
1567
1568         mutex_lock(&usbvision->lock);
1569
1570         usbvision_reset_powerOffTimer(usbvision);
1571
1572         usbvision->initialized = 0;
1573
1574         mutex_unlock(&usbvision->lock);
1575
1576         usbvision_remove_sysfs(usbvision->vdev);
1577         usbvision_unregister_video(usbvision);
1578
1579         if (usbvision->ctrlUrb) {
1580                 usb_free_urb(usbvision->ctrlUrb);
1581         }
1582
1583         v4l2_device_unregister(&usbvision->v4l2_dev);
1584         kfree(usbvision);
1585
1586         PDEBUG(DBG_PROBE, "success");
1587 }
1588
1589
1590 /*********************** usb interface **********************************/
1591
1592 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1593 {
1594         int model;
1595
1596         if (usbvision == NULL)
1597                 return;
1598
1599         model = usbvision->DevModel;
1600         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1601
1602         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1603                 usbvision->Vin_Reg2_Preset =
1604                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1605         } else {
1606                 usbvision->Vin_Reg2_Preset = 0;
1607         }
1608
1609         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1610
1611         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1612         usbvision->ctl_input = 0;
1613
1614         /* This should be here to make i2c clients to be able to register */
1615         /* first switch off audio */
1616         usbvision_audio_off(usbvision);
1617         if (!PowerOnAtOpen) {
1618                 /* and then power up the noisy tuner */
1619                 usbvision_power_on(usbvision);
1620                 usbvision_i2c_register(usbvision);
1621         }
1622 }
1623
1624 /*
1625  * usbvision_probe()
1626  *
1627  * This procedure queries device descriptor and accepts the interface
1628  * if it looks like USBVISION video device
1629  *
1630  */
1631 static int __devinit usbvision_probe(struct usb_interface *intf,
1632                                      const struct usb_device_id *devid)
1633 {
1634         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1635         struct usb_interface *uif;
1636         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1637         const struct usb_host_interface *interface;
1638         struct usb_usbvision *usbvision = NULL;
1639         const struct usb_endpoint_descriptor *endpoint;
1640         int model,i;
1641
1642         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1643                                 dev->descriptor.idVendor,
1644                                 dev->descriptor.idProduct, ifnum);
1645
1646         model = devid->driver_info;
1647         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1648                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1649                 return -ENODEV;
1650         }
1651         printk(KERN_INFO "%s: %s found\n", __func__,
1652                                 usbvision_device_data[model].ModelString);
1653
1654         if (usbvision_device_data[model].Interface >= 0) {
1655                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1656         } else {
1657                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1658         }
1659         endpoint = &interface->endpoint[1].desc;
1660         if (!usb_endpoint_xfer_isoc(endpoint)) {
1661                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1662                     __func__, ifnum);
1663                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1664                     __func__, endpoint->bmAttributes);
1665                 return -ENODEV;
1666         }
1667         if (usb_endpoint_dir_out(endpoint)) {
1668                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1669                     __func__, ifnum);
1670                 return -ENODEV;
1671         }
1672
1673         usbvision = usbvision_alloc(dev, intf);
1674         if (usbvision == NULL) {
1675                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1676                 return -ENOMEM;
1677         }
1678
1679         if (dev->descriptor.bNumConfigurations > 1) {
1680                 usbvision->bridgeType = BRIDGE_NT1004;
1681         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1682                 usbvision->bridgeType = BRIDGE_NT1005;
1683         } else {
1684                 usbvision->bridgeType = BRIDGE_NT1003;
1685         }
1686         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1687
1688         mutex_lock(&usbvision->lock);
1689
1690         /* compute alternate max packet sizes */
1691         uif = dev->actconfig->interface[0];
1692
1693         usbvision->num_alt=uif->num_altsetting;
1694         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1695         usbvision->alt_max_pkt_size = kmalloc(32*
1696                                               usbvision->num_alt,GFP_KERNEL);
1697         if (usbvision->alt_max_pkt_size == NULL) {
1698                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1699                 mutex_unlock(&usbvision->lock);
1700                 return -ENOMEM;
1701         }
1702
1703         for (i = 0; i < usbvision->num_alt ; i++) {
1704                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1705                                       wMaxPacketSize);
1706                 usbvision->alt_max_pkt_size[i] =
1707                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1708                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1709                        usbvision->alt_max_pkt_size[i]);
1710         }
1711
1712
1713         usbvision->nr = usbvision_nr++;
1714
1715         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1716         if (usbvision->have_tuner) {
1717                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1718         }
1719
1720         usbvision->DevModel = model;
1721         usbvision->remove_pending = 0;
1722         usbvision->iface = ifnum;
1723         usbvision->ifaceAlt = 0;
1724         usbvision->video_endp = endpoint->bEndpointAddress;
1725         usbvision->isocPacketSize = 0;
1726         usbvision->usb_bandwidth = 0;
1727         usbvision->user = 0;
1728         usbvision->streaming = Stream_Off;
1729         usbvision_register_video(usbvision);
1730         usbvision_configure_video(usbvision);
1731         mutex_unlock(&usbvision->lock);
1732
1733
1734         usb_set_intfdata (intf, usbvision);
1735         usbvision_create_sysfs(usbvision->vdev);
1736
1737         PDEBUG(DBG_PROBE, "success");
1738         return 0;
1739 }
1740
1741
1742 /*
1743  * usbvision_disconnect()
1744  *
1745  * This procedure stops all driver activity, deallocates interface-private
1746  * structure (pointed by 'ptr') and after that driver should be removable
1747  * with no ill consequences.
1748  *
1749  */
1750 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1751 {
1752         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1753
1754         PDEBUG(DBG_PROBE, "");
1755
1756         if (usbvision == NULL) {
1757                 dev_err(&usbvision->dev->dev,
1758                         "%s: usb_get_intfdata() failed\n", __func__);
1759                 return;
1760         }
1761         usb_set_intfdata (intf, NULL);
1762
1763         mutex_lock(&usbvision->lock);
1764
1765         // At this time we ask to cancel outstanding URBs
1766         usbvision_stop_isoc(usbvision);
1767
1768         v4l2_device_disconnect(&usbvision->v4l2_dev);
1769
1770         if (usbvision->power) {
1771                 usbvision_i2c_unregister(usbvision);
1772                 usbvision_power_off(usbvision);
1773         }
1774         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1775
1776         usb_put_dev(usbvision->dev);
1777         usbvision->dev = NULL;  // USB device is no more
1778
1779         mutex_unlock(&usbvision->lock);
1780
1781         if (usbvision->user) {
1782                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1783                        __func__);
1784                 wake_up_interruptible(&usbvision->wait_frame);
1785                 wake_up_interruptible(&usbvision->wait_stream);
1786         } else {
1787                 usbvision_release(usbvision);
1788         }
1789
1790         PDEBUG(DBG_PROBE, "success");
1791 }
1792
1793 static struct usb_driver usbvision_driver = {
1794         .name           = "usbvision",
1795         .id_table       = usbvision_table,
1796         .probe          = usbvision_probe,
1797         .disconnect     = __devexit_p(usbvision_disconnect),
1798 };
1799
1800 /*
1801  * usbvision_init()
1802  *
1803  * This code is run to initialize the driver.
1804  *
1805  */
1806 static int __init usbvision_init(void)
1807 {
1808         int errCode;
1809
1810         PDEBUG(DBG_PROBE, "");
1811
1812         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1813         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1814         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1815
1816         /* disable planar mode support unless compression enabled */
1817         if (isocMode != ISOC_MODE_COMPRESS ) {
1818                 // FIXME : not the right way to set supported flag
1819                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1820                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1821         }
1822
1823         errCode = usb_register(&usbvision_driver);
1824
1825         if (errCode == 0) {
1826                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1827                 PDEBUG(DBG_PROBE, "success");
1828         }
1829         return errCode;
1830 }
1831
1832 static void __exit usbvision_exit(void)
1833 {
1834  PDEBUG(DBG_PROBE, "");
1835
1836  usb_deregister(&usbvision_driver);
1837  PDEBUG(DBG_PROBE, "success");
1838 }
1839
1840 module_init(usbvision_init);
1841 module_exit(usbvision_exit);
1842
1843 /*
1844  * Overrides for Emacs so that we follow Linus's tabbing style.
1845  * ---------------------------------------------------------------------------
1846  * Local variables:
1847  * c-basic-offset: 8
1848  * End:
1849  */