874cfec0b8db4bd744f13f9f1b1bed94bd8817ac
[sfrench/cifs-2.6.git] / drivers / media / usb / 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/kernel.h>
49 #include <linux/list.h>
50 #include <linux/timer.h>
51 #include <linux/slab.h>
52 #include <linux/mm.h>
53 #include <linux/highmem.h>
54 #include <linux/vmalloc.h>
55 #include <linux/module.h>
56 #include <linux/init.h>
57 #include <linux/spinlock.h>
58 #include <linux/io.h>
59 #include <linux/videodev2.h>
60 #include <linux/i2c.h>
61
62 #include <media/saa7115.h>
63 #include <media/v4l2-common.h>
64 #include <media/v4l2-ioctl.h>
65 #include <media/tuner.h>
66
67 #include <linux/workqueue.h>
68
69 #include "usbvision.h"
70 #include "usbvision-cards.h"
71
72 #define DRIVER_AUTHOR                                   \
73         "Joerg Heckenbach <joerg@heckenbach-aw.de>, "   \
74         "Dwaine Garden <DwaineGarden@rogers.com>"
75 #define DRIVER_NAME "usbvision"
76 #define DRIVER_ALIAS "USBVision"
77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
78 #define DRIVER_LICENSE "GPL"
79 #define USBVISION_VERSION_STRING "0.9.11"
80
81 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
82
83
84 #ifdef USBVISION_DEBUG
85         #define PDEBUG(level, fmt, args...) { \
86                 if (video_debug & (level)) \
87                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
88                                 __func__, __LINE__ , ## args); \
89         }
90 #else
91         #define PDEBUG(level, fmt, args...) do {} while (0)
92 #endif
93
94 #define DBG_IO          (1 << 1)
95 #define DBG_PROBE       (1 << 2)
96 #define DBG_MMAP        (1 << 3)
97
98 /* String operations */
99 #define rmspace(str)    while (*str == ' ') str++;
100 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
101
102
103 /* sequential number of usbvision device */
104 static int usbvision_nr;
105
106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
107         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
108         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
109         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
110         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
111         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
112         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
113         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
114         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
115 };
116
117 /* Function prototypes */
118 static void usbvision_release(struct usb_usbvision *usbvision);
119
120 /* Default initialization of device driver parameters */
121 /* Set the default format for ISOC endpoint */
122 static int isoc_mode = ISOC_MODE_COMPRESS;
123 /* Set the default Debug Mode of the device driver */
124 static int video_debug;
125 /* Set the default device to power on at startup */
126 static int power_on_at_open = 1;
127 /* Sequential Number of Video Device */
128 static int video_nr = -1;
129 /* Sequential Number of Radio Device */
130 static int radio_nr = -1;
131
132 /* Grab parameters for the device driver */
133
134 /* Showing parameters under SYSFS */
135 module_param(isoc_mode, int, 0444);
136 module_param(video_debug, int, 0444);
137 module_param(power_on_at_open, int, 0444);
138 module_param(video_nr, int, 0444);
139 module_param(radio_nr, int, 0444);
140
141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
146
147
148 /* Misc stuff */
149 MODULE_AUTHOR(DRIVER_AUTHOR);
150 MODULE_DESCRIPTION(DRIVER_DESC);
151 MODULE_LICENSE(DRIVER_LICENSE);
152 MODULE_VERSION(USBVISION_VERSION_STRING);
153 MODULE_ALIAS(DRIVER_ALIAS);
154
155
156 /*****************************************************************************/
157 /* SYSFS Code - Copied from the stv680.c usb module.                         */
158 /* Device information is located at /sys/class/video4linux/video0            */
159 /* Device parameters information is located at /sys/module/usbvision         */
160 /* Device USB Information is located at                                      */
161 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
162 /*****************************************************************************/
163
164 #define YES_NO(x) ((x) ? "Yes" : "No")
165
166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
167 {
168         struct video_device *vdev =
169                 container_of(cd, struct video_device, dev);
170         return video_get_drvdata(vdev);
171 }
172
173 static ssize_t show_version(struct device *cd,
174                             struct device_attribute *attr, char *buf)
175 {
176         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
177 }
178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
179
180 static ssize_t show_model(struct device *cd,
181                           struct device_attribute *attr, char *buf)
182 {
183         struct video_device *vdev =
184                 container_of(cd, struct video_device, dev);
185         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
186         return sprintf(buf, "%s\n",
187                        usbvision_device_data[usbvision->dev_model].model_string);
188 }
189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
190
191 static ssize_t show_hue(struct device *cd,
192                         struct device_attribute *attr, char *buf)
193 {
194         struct video_device *vdev =
195                 container_of(cd, struct video_device, dev);
196         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
197         struct v4l2_control ctrl;
198         ctrl.id = V4L2_CID_HUE;
199         ctrl.value = 0;
200         if (usbvision->user)
201                 call_all(usbvision, core, g_ctrl, &ctrl);
202         return sprintf(buf, "%d\n", ctrl.value);
203 }
204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
205
206 static ssize_t show_contrast(struct device *cd,
207                              struct device_attribute *attr, char *buf)
208 {
209         struct video_device *vdev =
210                 container_of(cd, struct video_device, dev);
211         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
212         struct v4l2_control ctrl;
213         ctrl.id = V4L2_CID_CONTRAST;
214         ctrl.value = 0;
215         if (usbvision->user)
216                 call_all(usbvision, core, g_ctrl, &ctrl);
217         return sprintf(buf, "%d\n", ctrl.value);
218 }
219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
220
221 static ssize_t show_brightness(struct device *cd,
222                                struct device_attribute *attr, char *buf)
223 {
224         struct video_device *vdev =
225                 container_of(cd, struct video_device, dev);
226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
227         struct v4l2_control ctrl;
228         ctrl.id = V4L2_CID_BRIGHTNESS;
229         ctrl.value = 0;
230         if (usbvision->user)
231                 call_all(usbvision, core, g_ctrl, &ctrl);
232         return sprintf(buf, "%d\n", ctrl.value);
233 }
234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
235
236 static ssize_t show_saturation(struct device *cd,
237                                struct device_attribute *attr, char *buf)
238 {
239         struct video_device *vdev =
240                 container_of(cd, struct video_device, dev);
241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
242         struct v4l2_control ctrl;
243         ctrl.id = V4L2_CID_SATURATION;
244         ctrl.value = 0;
245         if (usbvision->user)
246                 call_all(usbvision, core, g_ctrl, &ctrl);
247         return sprintf(buf, "%d\n", ctrl.value);
248 }
249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
250
251 static ssize_t show_streaming(struct device *cd,
252                               struct device_attribute *attr, char *buf)
253 {
254         struct video_device *vdev =
255                 container_of(cd, struct video_device, dev);
256         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
257         return sprintf(buf, "%s\n",
258                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
259 }
260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
261
262 static ssize_t show_compression(struct device *cd,
263                                 struct device_attribute *attr, char *buf)
264 {
265         struct video_device *vdev =
266                 container_of(cd, struct video_device, dev);
267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
268         return sprintf(buf, "%s\n",
269                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
270 }
271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
272
273 static ssize_t show_device_bridge(struct device *cd,
274                                   struct device_attribute *attr, char *buf)
275 {
276         struct video_device *vdev =
277                 container_of(cd, struct video_device, dev);
278         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
279         return sprintf(buf, "%d\n", usbvision->bridge_type);
280 }
281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
282
283 static void usbvision_create_sysfs(struct video_device *vdev)
284 {
285         int res;
286
287         if (!vdev)
288                 return;
289         do {
290                 res = device_create_file(&vdev->dev, &dev_attr_version);
291                 if (res < 0)
292                         break;
293                 res = device_create_file(&vdev->dev, &dev_attr_model);
294                 if (res < 0)
295                         break;
296                 res = device_create_file(&vdev->dev, &dev_attr_hue);
297                 if (res < 0)
298                         break;
299                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
300                 if (res < 0)
301                         break;
302                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
303                 if (res < 0)
304                         break;
305                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
306                 if (res < 0)
307                         break;
308                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
309                 if (res < 0)
310                         break;
311                 res = device_create_file(&vdev->dev, &dev_attr_compression);
312                 if (res < 0)
313                         break;
314                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
315                 if (res >= 0)
316                         return;
317         } while (0);
318
319         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
320 }
321
322 static void usbvision_remove_sysfs(struct video_device *vdev)
323 {
324         if (vdev) {
325                 device_remove_file(&vdev->dev, &dev_attr_version);
326                 device_remove_file(&vdev->dev, &dev_attr_model);
327                 device_remove_file(&vdev->dev, &dev_attr_hue);
328                 device_remove_file(&vdev->dev, &dev_attr_contrast);
329                 device_remove_file(&vdev->dev, &dev_attr_brightness);
330                 device_remove_file(&vdev->dev, &dev_attr_saturation);
331                 device_remove_file(&vdev->dev, &dev_attr_streaming);
332                 device_remove_file(&vdev->dev, &dev_attr_compression);
333                 device_remove_file(&vdev->dev, &dev_attr_bridge);
334         }
335 }
336
337 /*
338  * usbvision_open()
339  *
340  * This is part of Video 4 Linux API. The driver can be opened by one
341  * client only (checks internal counter 'usbvision->user'). The procedure
342  * then allocates buffers needed for video processing.
343  *
344  */
345 static int usbvision_v4l2_open(struct file *file)
346 {
347         struct usb_usbvision *usbvision = video_drvdata(file);
348         int err_code = 0;
349
350         PDEBUG(DBG_IO, "open");
351
352         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
353                 return -ERESTARTSYS;
354         usbvision_reset_power_off_timer(usbvision);
355
356         if (usbvision->user)
357                 err_code = -EBUSY;
358         else {
359                 /* Allocate memory for the scratch ring buffer */
360                 err_code = usbvision_scratch_alloc(usbvision);
361                 if (isoc_mode == ISOC_MODE_COMPRESS) {
362                         /* Allocate intermediate decompression buffers
363                            only if needed */
364                         err_code = usbvision_decompress_alloc(usbvision);
365                 }
366                 if (err_code) {
367                         /* Deallocate all buffers if trouble */
368                         usbvision_scratch_free(usbvision);
369                         usbvision_decompress_free(usbvision);
370                 }
371         }
372
373         /* If so far no errors then we shall start the camera */
374         if (!err_code) {
375                 if (usbvision->power == 0) {
376                         usbvision_power_on(usbvision);
377                         usbvision_i2c_register(usbvision);
378                 }
379
380                 /* Send init sequence only once, it's large! */
381                 if (!usbvision->initialized) {
382                         int setup_ok = 0;
383                         setup_ok = usbvision_setup(usbvision, isoc_mode);
384                         if (setup_ok)
385                                 usbvision->initialized = 1;
386                         else
387                                 err_code = -EBUSY;
388                 }
389
390                 if (!err_code) {
391                         usbvision_begin_streaming(usbvision);
392                         err_code = usbvision_init_isoc(usbvision);
393                         /* device must be initialized before isoc transfer */
394                         usbvision_muxsel(usbvision, 0);
395                         usbvision->user++;
396                 } else {
397                         if (power_on_at_open) {
398                                 usbvision_i2c_unregister(usbvision);
399                                 usbvision_power_off(usbvision);
400                                 usbvision->initialized = 0;
401                         }
402                 }
403         }
404
405         /* prepare queues */
406         usbvision_empty_framequeues(usbvision);
407         mutex_unlock(&usbvision->v4l2_lock);
408
409         PDEBUG(DBG_IO, "success");
410         return err_code;
411 }
412
413 /*
414  * usbvision_v4l2_close()
415  *
416  * This is part of Video 4 Linux API. The procedure
417  * stops streaming and deallocates all buffers that were earlier
418  * allocated in usbvision_v4l2_open().
419  *
420  */
421 static int usbvision_v4l2_close(struct file *file)
422 {
423         struct usb_usbvision *usbvision = video_drvdata(file);
424
425         PDEBUG(DBG_IO, "close");
426
427         mutex_lock(&usbvision->v4l2_lock);
428         usbvision_audio_off(usbvision);
429         usbvision_restart_isoc(usbvision);
430         usbvision_stop_isoc(usbvision);
431
432         usbvision_decompress_free(usbvision);
433         usbvision_frames_free(usbvision);
434         usbvision_empty_framequeues(usbvision);
435         usbvision_scratch_free(usbvision);
436
437         usbvision->user--;
438
439         if (power_on_at_open) {
440                 /* power off in a little while
441                    to avoid off/on every close/open short sequences */
442                 usbvision_set_power_off_timer(usbvision);
443                 usbvision->initialized = 0;
444         }
445
446         if (usbvision->remove_pending) {
447                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
448                 usbvision_release(usbvision);
449         }
450         mutex_unlock(&usbvision->v4l2_lock);
451
452         PDEBUG(DBG_IO, "success");
453         return 0;
454 }
455
456
457 /*
458  * usbvision_ioctl()
459  *
460  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
461  *
462  */
463 #ifdef CONFIG_VIDEO_ADV_DEBUG
464 static int vidioc_g_register(struct file *file, void *priv,
465                                 struct v4l2_dbg_register *reg)
466 {
467         struct usb_usbvision *usbvision = video_drvdata(file);
468         int err_code;
469
470         if (!v4l2_chip_match_host(&reg->match))
471                 return -EINVAL;
472         /* NT100x has a 8-bit register space */
473         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
474         if (err_code < 0) {
475                 dev_err(&usbvision->vdev->dev,
476                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
477                                 __func__, err_code);
478                 return err_code;
479         }
480         reg->val = err_code;
481         reg->size = 1;
482         return 0;
483 }
484
485 static int vidioc_s_register(struct file *file, void *priv,
486                                 struct v4l2_dbg_register *reg)
487 {
488         struct usb_usbvision *usbvision = video_drvdata(file);
489         int err_code;
490
491         if (!v4l2_chip_match_host(&reg->match))
492                 return -EINVAL;
493         /* NT100x has a 8-bit register space */
494         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
495         if (err_code < 0) {
496                 dev_err(&usbvision->vdev->dev,
497                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
498                                 __func__, err_code);
499                 return err_code;
500         }
501         return 0;
502 }
503 #endif
504
505 static int vidioc_querycap(struct file *file, void  *priv,
506                                         struct v4l2_capability *vc)
507 {
508         struct usb_usbvision *usbvision = video_drvdata(file);
509
510         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
511         strlcpy(vc->card,
512                 usbvision_device_data[usbvision->dev_model].model_string,
513                 sizeof(vc->card));
514         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
515         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
516                 V4L2_CAP_AUDIO |
517                 V4L2_CAP_READWRITE |
518                 V4L2_CAP_STREAMING |
519                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
520         return 0;
521 }
522
523 static int vidioc_enum_input(struct file *file, void *priv,
524                                 struct v4l2_input *vi)
525 {
526         struct usb_usbvision *usbvision = video_drvdata(file);
527         int chan;
528
529         if (vi->index >= usbvision->video_inputs)
530                 return -EINVAL;
531         if (usbvision->have_tuner)
532                 chan = vi->index;
533         else
534                 chan = vi->index + 1; /* skip Television string*/
535
536         /* Determine the requested input characteristics
537            specific for each usbvision card model */
538         switch (chan) {
539         case 0:
540                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
541                         strcpy(vi->name, "White Video Input");
542                 } else {
543                         strcpy(vi->name, "Television");
544                         vi->type = V4L2_INPUT_TYPE_TUNER;
545                         vi->audioset = 1;
546                         vi->tuner = chan;
547                         vi->std = USBVISION_NORMS;
548                 }
549                 break;
550         case 1:
551                 vi->type = V4L2_INPUT_TYPE_CAMERA;
552                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
553                         strcpy(vi->name, "Green Video Input");
554                 else
555                         strcpy(vi->name, "Composite Video Input");
556                 vi->std = V4L2_STD_PAL;
557                 break;
558         case 2:
559                 vi->type = V4L2_INPUT_TYPE_CAMERA;
560                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
561                         strcpy(vi->name, "Yellow Video Input");
562                 else
563                         strcpy(vi->name, "S-Video Input");
564                 vi->std = V4L2_STD_PAL;
565                 break;
566         case 3:
567                 vi->type = V4L2_INPUT_TYPE_CAMERA;
568                 strcpy(vi->name, "Red Video Input");
569                 vi->std = V4L2_STD_PAL;
570                 break;
571         }
572         return 0;
573 }
574
575 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
576 {
577         struct usb_usbvision *usbvision = video_drvdata(file);
578
579         *input = usbvision->ctl_input;
580         return 0;
581 }
582
583 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
584 {
585         struct usb_usbvision *usbvision = video_drvdata(file);
586
587         if (input >= usbvision->video_inputs)
588                 return -EINVAL;
589
590         usbvision_muxsel(usbvision, input);
591         usbvision_set_input(usbvision);
592         usbvision_set_output(usbvision,
593                              usbvision->curwidth,
594                              usbvision->curheight);
595         return 0;
596 }
597
598 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
599 {
600         struct usb_usbvision *usbvision = video_drvdata(file);
601
602         usbvision->tvnorm_id = *id;
603
604         call_all(usbvision, core, s_std, usbvision->tvnorm_id);
605         /* propagate the change to the decoder */
606         usbvision_muxsel(usbvision, usbvision->ctl_input);
607
608         return 0;
609 }
610
611 static int vidioc_g_tuner(struct file *file, void *priv,
612                                 struct v4l2_tuner *vt)
613 {
614         struct usb_usbvision *usbvision = video_drvdata(file);
615
616         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
617                 return -EINVAL;
618         if (usbvision->radio) {
619                 strcpy(vt->name, "Radio");
620                 vt->type = V4L2_TUNER_RADIO;
621         } else {
622                 strcpy(vt->name, "Television");
623         }
624         /* Let clients fill in the remainder of this struct */
625         call_all(usbvision, tuner, g_tuner, vt);
626
627         return 0;
628 }
629
630 static int vidioc_s_tuner(struct file *file, void *priv,
631                                 const struct v4l2_tuner *vt)
632 {
633         struct usb_usbvision *usbvision = video_drvdata(file);
634
635         /* Only no or one tuner for now */
636         if (!usbvision->have_tuner || vt->index)
637                 return -EINVAL;
638         /* let clients handle this */
639         call_all(usbvision, tuner, s_tuner, vt);
640
641         return 0;
642 }
643
644 static int vidioc_g_frequency(struct file *file, void *priv,
645                                 struct v4l2_frequency *freq)
646 {
647         struct usb_usbvision *usbvision = video_drvdata(file);
648
649         freq->tuner = 0; /* Only one tuner */
650         if (usbvision->radio)
651                 freq->type = V4L2_TUNER_RADIO;
652         else
653                 freq->type = V4L2_TUNER_ANALOG_TV;
654         freq->frequency = usbvision->freq;
655
656         return 0;
657 }
658
659 static int vidioc_s_frequency(struct file *file, void *priv,
660                                 const struct v4l2_frequency *freq)
661 {
662         struct usb_usbvision *usbvision = video_drvdata(file);
663
664         /* Only no or one tuner for now */
665         if (!usbvision->have_tuner || freq->tuner)
666                 return -EINVAL;
667
668         usbvision->freq = freq->frequency;
669         call_all(usbvision, tuner, s_frequency, freq);
670
671         return 0;
672 }
673
674 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
675 {
676         struct usb_usbvision *usbvision = video_drvdata(file);
677
678         if (usbvision->radio)
679                 strcpy(a->name, "Radio");
680         else
681                 strcpy(a->name, "TV");
682
683         return 0;
684 }
685
686 static int vidioc_s_audio(struct file *file, void *fh,
687                           const struct v4l2_audio *a)
688 {
689         if (a->index)
690                 return -EINVAL;
691         return 0;
692 }
693
694 static int vidioc_queryctrl(struct file *file, void *priv,
695                             struct v4l2_queryctrl *ctrl)
696 {
697         struct usb_usbvision *usbvision = video_drvdata(file);
698
699         call_all(usbvision, core, queryctrl, ctrl);
700
701         if (!ctrl->type)
702                 return -EINVAL;
703
704         return 0;
705 }
706
707 static int vidioc_g_ctrl(struct file *file, void *priv,
708                                 struct v4l2_control *ctrl)
709 {
710         struct usb_usbvision *usbvision = video_drvdata(file);
711
712         call_all(usbvision, core, g_ctrl, ctrl);
713         return 0;
714 }
715
716 static int vidioc_s_ctrl(struct file *file, void *priv,
717                                 struct v4l2_control *ctrl)
718 {
719         struct usb_usbvision *usbvision = video_drvdata(file);
720
721         call_all(usbvision, core, s_ctrl, ctrl);
722         return 0;
723 }
724
725 static int vidioc_reqbufs(struct file *file,
726                            void *priv, struct v4l2_requestbuffers *vr)
727 {
728         struct usb_usbvision *usbvision = video_drvdata(file);
729         int ret;
730
731         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
732
733         /* Check input validity:
734            the user must do a VIDEO CAPTURE and MMAP method. */
735         if (vr->memory != V4L2_MEMORY_MMAP)
736                 return -EINVAL;
737
738         if (usbvision->streaming == stream_on) {
739                 ret = usbvision_stream_interrupt(usbvision);
740                 if (ret)
741                         return ret;
742         }
743
744         usbvision_frames_free(usbvision);
745         usbvision_empty_framequeues(usbvision);
746         vr->count = usbvision_frames_alloc(usbvision, vr->count);
747
748         usbvision->cur_frame = NULL;
749
750         return 0;
751 }
752
753 static int vidioc_querybuf(struct file *file,
754                             void *priv, struct v4l2_buffer *vb)
755 {
756         struct usb_usbvision *usbvision = video_drvdata(file);
757         struct usbvision_frame *frame;
758
759         /* FIXME : must control
760            that buffers are mapped (VIDIOC_REQBUFS has been called) */
761         if (vb->index >= usbvision->num_frames)
762                 return -EINVAL;
763         /* Updating the corresponding frame state */
764         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
765         frame = &usbvision->frame[vb->index];
766         if (frame->grabstate >= frame_state_ready)
767                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
768         if (frame->grabstate >= frame_state_done)
769                 vb->flags |= V4L2_BUF_FLAG_DONE;
770         if (frame->grabstate == frame_state_unused)
771                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
772         vb->memory = V4L2_MEMORY_MMAP;
773
774         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
775
776         vb->memory = V4L2_MEMORY_MMAP;
777         vb->field = V4L2_FIELD_NONE;
778         vb->length = usbvision->curwidth *
779                 usbvision->curheight *
780                 usbvision->palette.bytes_per_pixel;
781         vb->timestamp = usbvision->frame[vb->index].timestamp;
782         vb->sequence = usbvision->frame[vb->index].sequence;
783         return 0;
784 }
785
786 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
787 {
788         struct usb_usbvision *usbvision = video_drvdata(file);
789         struct usbvision_frame *frame;
790         unsigned long lock_flags;
791
792         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
793         if (vb->index >= usbvision->num_frames)
794                 return -EINVAL;
795
796         frame = &usbvision->frame[vb->index];
797
798         if (frame->grabstate != frame_state_unused)
799                 return -EAGAIN;
800
801         /* Mark it as ready and enqueue frame */
802         frame->grabstate = frame_state_ready;
803         frame->scanstate = scan_state_scanning;
804         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
805
806         vb->flags &= ~V4L2_BUF_FLAG_DONE;
807
808         /* set v4l2_format index */
809         frame->v4l2_format = usbvision->palette;
810
811         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
812         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
813         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
814
815         return 0;
816 }
817
818 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
819 {
820         struct usb_usbvision *usbvision = video_drvdata(file);
821         int ret;
822         struct usbvision_frame *f;
823         unsigned long lock_flags;
824
825         if (list_empty(&(usbvision->outqueue))) {
826                 if (usbvision->streaming == stream_idle)
827                         return -EINVAL;
828                 ret = wait_event_interruptible
829                         (usbvision->wait_frame,
830                          !list_empty(&(usbvision->outqueue)));
831                 if (ret)
832                         return ret;
833         }
834
835         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
836         f = list_entry(usbvision->outqueue.next,
837                        struct usbvision_frame, frame);
838         list_del(usbvision->outqueue.next);
839         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
840
841         f->grabstate = frame_state_unused;
842
843         vb->memory = V4L2_MEMORY_MMAP;
844         vb->flags = V4L2_BUF_FLAG_MAPPED |
845                 V4L2_BUF_FLAG_QUEUED |
846                 V4L2_BUF_FLAG_DONE |
847                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
848         vb->index = f->index;
849         vb->sequence = f->sequence;
850         vb->timestamp = f->timestamp;
851         vb->field = V4L2_FIELD_NONE;
852         vb->bytesused = f->scanlength;
853
854         return 0;
855 }
856
857 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
858 {
859         struct usb_usbvision *usbvision = video_drvdata(file);
860
861         usbvision->streaming = stream_on;
862         call_all(usbvision, video, s_stream, 1);
863
864         return 0;
865 }
866
867 static int vidioc_streamoff(struct file *file,
868                             void *priv, enum v4l2_buf_type type)
869 {
870         struct usb_usbvision *usbvision = video_drvdata(file);
871
872         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
873                 return -EINVAL;
874
875         if (usbvision->streaming == stream_on) {
876                 usbvision_stream_interrupt(usbvision);
877                 /* Stop all video streamings */
878                 call_all(usbvision, video, s_stream, 0);
879         }
880         usbvision_empty_framequeues(usbvision);
881
882         return 0;
883 }
884
885 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
886                                         struct v4l2_fmtdesc *vfd)
887 {
888         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
889                 return -EINVAL;
890         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
891         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
892         return 0;
893 }
894
895 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
896                                         struct v4l2_format *vf)
897 {
898         struct usb_usbvision *usbvision = video_drvdata(file);
899         vf->fmt.pix.width = usbvision->curwidth;
900         vf->fmt.pix.height = usbvision->curheight;
901         vf->fmt.pix.pixelformat = usbvision->palette.format;
902         vf->fmt.pix.bytesperline =
903                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
904         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
905         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
906         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
907
908         return 0;
909 }
910
911 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
912                                struct v4l2_format *vf)
913 {
914         struct usb_usbvision *usbvision = video_drvdata(file);
915         int format_idx;
916
917         /* Find requested format in available ones */
918         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
919                 if (vf->fmt.pix.pixelformat ==
920                    usbvision_v4l2_format[format_idx].format) {
921                         usbvision->palette = usbvision_v4l2_format[format_idx];
922                         break;
923                 }
924         }
925         /* robustness */
926         if (format_idx == USBVISION_SUPPORTED_PALETTES)
927                 return -EINVAL;
928         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
929         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
930
931         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
932                 usbvision->palette.bytes_per_pixel;
933         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
934
935         return 0;
936 }
937
938 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
939                                struct v4l2_format *vf)
940 {
941         struct usb_usbvision *usbvision = video_drvdata(file);
942         int ret;
943
944         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
945         if (ret)
946                 return ret;
947
948         /* stop io in case it is already in progress */
949         if (usbvision->streaming == stream_on) {
950                 ret = usbvision_stream_interrupt(usbvision);
951                 if (ret)
952                         return ret;
953         }
954         usbvision_frames_free(usbvision);
955         usbvision_empty_framequeues(usbvision);
956
957         usbvision->cur_frame = NULL;
958
959         /* by now we are committed to the new data... */
960         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
961
962         return 0;
963 }
964
965 static ssize_t usbvision_read(struct file *file, char __user *buf,
966                       size_t count, loff_t *ppos)
967 {
968         struct usb_usbvision *usbvision = video_drvdata(file);
969         int noblock = file->f_flags & O_NONBLOCK;
970         unsigned long lock_flags;
971         int ret, i;
972         struct usbvision_frame *frame;
973
974         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
975                (unsigned long)count, noblock);
976
977         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
978                 return -EFAULT;
979
980         /* This entry point is compatible with the mmap routines
981            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
982            to get frames or call read on the device. */
983         if (!usbvision->num_frames) {
984                 /* First, allocate some frames to work with
985                    if this has not been done with VIDIOC_REQBUF */
986                 usbvision_frames_free(usbvision);
987                 usbvision_empty_framequeues(usbvision);
988                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
989         }
990
991         if (usbvision->streaming != stream_on) {
992                 /* no stream is running, make it running ! */
993                 usbvision->streaming = stream_on;
994                 call_all(usbvision, video, s_stream, 1);
995         }
996
997         /* Then, enqueue as many frames as possible
998            (like a user of VIDIOC_QBUF would do) */
999         for (i = 0; i < usbvision->num_frames; i++) {
1000                 frame = &usbvision->frame[i];
1001                 if (frame->grabstate == frame_state_unused) {
1002                         /* Mark it as ready and enqueue frame */
1003                         frame->grabstate = frame_state_ready;
1004                         frame->scanstate = scan_state_scanning;
1005                         /* Accumulated in usbvision_parse_data() */
1006                         frame->scanlength = 0;
1007
1008                         /* set v4l2_format index */
1009                         frame->v4l2_format = usbvision->palette;
1010
1011                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1012                         list_add_tail(&frame->frame, &usbvision->inqueue);
1013                         spin_unlock_irqrestore(&usbvision->queue_lock,
1014                                                lock_flags);
1015                 }
1016         }
1017
1018         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1019         if (list_empty(&(usbvision->outqueue))) {
1020                 if (noblock)
1021                         return -EAGAIN;
1022
1023                 ret = wait_event_interruptible
1024                         (usbvision->wait_frame,
1025                          !list_empty(&(usbvision->outqueue)));
1026                 if (ret)
1027                         return ret;
1028         }
1029
1030         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1031         frame = list_entry(usbvision->outqueue.next,
1032                            struct usbvision_frame, frame);
1033         list_del(usbvision->outqueue.next);
1034         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1035
1036         /* An error returns an empty frame */
1037         if (frame->grabstate == frame_state_error) {
1038                 frame->bytes_read = 0;
1039                 return 0;
1040         }
1041
1042         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1043                __func__,
1044                frame->index, frame->bytes_read, frame->scanlength);
1045
1046         /* copy bytes to user space; we allow for partials reads */
1047         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1048                 count = frame->scanlength - frame->bytes_read;
1049
1050         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1051                 return -EFAULT;
1052
1053         frame->bytes_read += count;
1054         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1055                __func__,
1056                (unsigned long)count, frame->bytes_read);
1057
1058         /* For now, forget the frame if it has not been read in one shot. */
1059 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1060                 frame->bytes_read = 0;
1061
1062                 /* Mark it as available to be used again. */
1063                 frame->grabstate = frame_state_unused;
1064 /*      } */
1065
1066         return count;
1067 }
1068
1069 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1070                       size_t count, loff_t *ppos)
1071 {
1072         struct usb_usbvision *usbvision = video_drvdata(file);
1073         int res;
1074
1075         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1076                 return -ERESTARTSYS;
1077         res = usbvision_read(file, buf, count, ppos);
1078         mutex_unlock(&usbvision->v4l2_lock);
1079         return res;
1080 }
1081
1082 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1083 {
1084         unsigned long size = vma->vm_end - vma->vm_start,
1085                 start = vma->vm_start;
1086         void *pos;
1087         u32 i;
1088         struct usb_usbvision *usbvision = video_drvdata(file);
1089
1090         PDEBUG(DBG_MMAP, "mmap");
1091
1092         if (!USBVISION_IS_OPERATIONAL(usbvision))
1093                 return -EFAULT;
1094
1095         if (!(vma->vm_flags & VM_WRITE) ||
1096             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1097                 return -EINVAL;
1098         }
1099
1100         for (i = 0; i < usbvision->num_frames; i++) {
1101                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1102                     vma->vm_pgoff)
1103                         break;
1104         }
1105         if (i == usbvision->num_frames) {
1106                 PDEBUG(DBG_MMAP,
1107                        "mmap: user supplied mapping address is out of range");
1108                 return -EINVAL;
1109         }
1110
1111         /* VM_IO is eventually going to replace PageReserved altogether */
1112         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1113
1114         pos = usbvision->frame[i].data;
1115         while (size > 0) {
1116                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1117                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1118                         return -EAGAIN;
1119                 }
1120                 start += PAGE_SIZE;
1121                 pos += PAGE_SIZE;
1122                 size -= PAGE_SIZE;
1123         }
1124
1125         return 0;
1126 }
1127
1128 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1129 {
1130         struct usb_usbvision *usbvision = video_drvdata(file);
1131         int res;
1132
1133         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1134                 return -ERESTARTSYS;
1135         res = usbvision_mmap(file, vma);
1136         mutex_unlock(&usbvision->v4l2_lock);
1137         return res;
1138 }
1139
1140 /*
1141  * Here comes the stuff for radio on usbvision based devices
1142  *
1143  */
1144 static int usbvision_radio_open(struct file *file)
1145 {
1146         struct usb_usbvision *usbvision = video_drvdata(file);
1147         int err_code = 0;
1148
1149         PDEBUG(DBG_IO, "%s:", __func__);
1150
1151         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1152                 return -ERESTARTSYS;
1153         if (usbvision->user) {
1154                 dev_err(&usbvision->rdev->dev,
1155                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1156                                 __func__);
1157                 err_code = -EBUSY;
1158         } else {
1159                 if (power_on_at_open) {
1160                         usbvision_reset_power_off_timer(usbvision);
1161                         if (usbvision->power == 0) {
1162                                 usbvision_power_on(usbvision);
1163                                 usbvision_i2c_register(usbvision);
1164                         }
1165                 }
1166
1167                 /* Alternate interface 1 is is the biggest frame size */
1168                 err_code = usbvision_set_alternate(usbvision);
1169                 if (err_code < 0) {
1170                         usbvision->last_error = err_code;
1171                         err_code = -EBUSY;
1172                         goto out;
1173                 }
1174
1175                 /* If so far no errors then we shall start the radio */
1176                 usbvision->radio = 1;
1177                 call_all(usbvision, tuner, s_radio);
1178                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1179                 usbvision->user++;
1180         }
1181
1182         if (err_code) {
1183                 if (power_on_at_open) {
1184                         usbvision_i2c_unregister(usbvision);
1185                         usbvision_power_off(usbvision);
1186                         usbvision->initialized = 0;
1187                 }
1188         }
1189 out:
1190         mutex_unlock(&usbvision->v4l2_lock);
1191         return err_code;
1192 }
1193
1194
1195 static int usbvision_radio_close(struct file *file)
1196 {
1197         struct usb_usbvision *usbvision = video_drvdata(file);
1198         int err_code = 0;
1199
1200         PDEBUG(DBG_IO, "");
1201
1202         mutex_lock(&usbvision->v4l2_lock);
1203         /* Set packet size to 0 */
1204         usbvision->iface_alt = 0;
1205         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1206                                     usbvision->iface_alt);
1207
1208         usbvision_audio_off(usbvision);
1209         usbvision->radio = 0;
1210         usbvision->user--;
1211
1212         if (power_on_at_open) {
1213                 usbvision_set_power_off_timer(usbvision);
1214                 usbvision->initialized = 0;
1215         }
1216
1217         if (usbvision->remove_pending) {
1218                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1219                 usbvision_release(usbvision);
1220         }
1221
1222         mutex_unlock(&usbvision->v4l2_lock);
1223         PDEBUG(DBG_IO, "success");
1224         return err_code;
1225 }
1226
1227 /* Video registration stuff */
1228
1229 /* Video template */
1230 static const struct v4l2_file_operations usbvision_fops = {
1231         .owner             = THIS_MODULE,
1232         .open           = usbvision_v4l2_open,
1233         .release        = usbvision_v4l2_close,
1234         .read           = usbvision_v4l2_read,
1235         .mmap           = usbvision_v4l2_mmap,
1236         .unlocked_ioctl = video_ioctl2,
1237 /*      .poll           = video_poll, */
1238 };
1239
1240 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1241         .vidioc_querycap      = vidioc_querycap,
1242         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1243         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1244         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1245         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1246         .vidioc_reqbufs       = vidioc_reqbufs,
1247         .vidioc_querybuf      = vidioc_querybuf,
1248         .vidioc_qbuf          = vidioc_qbuf,
1249         .vidioc_dqbuf         = vidioc_dqbuf,
1250         .vidioc_s_std         = vidioc_s_std,
1251         .vidioc_enum_input    = vidioc_enum_input,
1252         .vidioc_g_input       = vidioc_g_input,
1253         .vidioc_s_input       = vidioc_s_input,
1254         .vidioc_queryctrl     = vidioc_queryctrl,
1255         .vidioc_g_audio       = vidioc_g_audio,
1256         .vidioc_s_audio       = vidioc_s_audio,
1257         .vidioc_g_ctrl        = vidioc_g_ctrl,
1258         .vidioc_s_ctrl        = vidioc_s_ctrl,
1259         .vidioc_streamon      = vidioc_streamon,
1260         .vidioc_streamoff     = vidioc_streamoff,
1261         .vidioc_g_tuner       = vidioc_g_tuner,
1262         .vidioc_s_tuner       = vidioc_s_tuner,
1263         .vidioc_g_frequency   = vidioc_g_frequency,
1264         .vidioc_s_frequency   = vidioc_s_frequency,
1265 #ifdef CONFIG_VIDEO_ADV_DEBUG
1266         .vidioc_g_register    = vidioc_g_register,
1267         .vidioc_s_register    = vidioc_s_register,
1268 #endif
1269 };
1270
1271 static struct video_device usbvision_video_template = {
1272         .fops           = &usbvision_fops,
1273         .ioctl_ops      = &usbvision_ioctl_ops,
1274         .name           = "usbvision-video",
1275         .release        = video_device_release,
1276         .tvnorms        = USBVISION_NORMS,
1277         .current_norm   = V4L2_STD_PAL
1278 };
1279
1280
1281 /* Radio template */
1282 static const struct v4l2_file_operations usbvision_radio_fops = {
1283         .owner             = THIS_MODULE,
1284         .open           = usbvision_radio_open,
1285         .release        = usbvision_radio_close,
1286         .unlocked_ioctl = video_ioctl2,
1287 };
1288
1289 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1290         .vidioc_querycap      = vidioc_querycap,
1291         .vidioc_enum_input    = vidioc_enum_input,
1292         .vidioc_g_input       = vidioc_g_input,
1293         .vidioc_s_input       = vidioc_s_input,
1294         .vidioc_queryctrl     = vidioc_queryctrl,
1295         .vidioc_g_audio       = vidioc_g_audio,
1296         .vidioc_s_audio       = vidioc_s_audio,
1297         .vidioc_g_ctrl        = vidioc_g_ctrl,
1298         .vidioc_s_ctrl        = vidioc_s_ctrl,
1299         .vidioc_g_tuner       = vidioc_g_tuner,
1300         .vidioc_s_tuner       = vidioc_s_tuner,
1301         .vidioc_g_frequency   = vidioc_g_frequency,
1302         .vidioc_s_frequency   = vidioc_s_frequency,
1303 };
1304
1305 static struct video_device usbvision_radio_template = {
1306         .fops           = &usbvision_radio_fops,
1307         .name           = "usbvision-radio",
1308         .release        = video_device_release,
1309         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1310
1311         .tvnorms              = USBVISION_NORMS,
1312         .current_norm         = V4L2_STD_PAL
1313 };
1314
1315
1316 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1317                                         struct video_device *vdev_template,
1318                                         char *name)
1319 {
1320         struct usb_device *usb_dev = usbvision->dev;
1321         struct video_device *vdev;
1322
1323         if (usb_dev == NULL) {
1324                 dev_err(&usbvision->dev->dev,
1325                         "%s: usbvision->dev is not set\n", __func__);
1326                 return NULL;
1327         }
1328
1329         vdev = video_device_alloc();
1330         if (NULL == vdev)
1331                 return NULL;
1332         *vdev = *vdev_template;
1333         vdev->lock = &usbvision->v4l2_lock;
1334         vdev->v4l2_dev = &usbvision->v4l2_dev;
1335         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1336         video_set_drvdata(vdev, usbvision);
1337         return vdev;
1338 }
1339
1340 /* unregister video4linux devices */
1341 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1342 {
1343         /* Radio Device: */
1344         if (usbvision->rdev) {
1345                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1346                        video_device_node_name(usbvision->rdev));
1347                 if (video_is_registered(usbvision->rdev))
1348                         video_unregister_device(usbvision->rdev);
1349                 else
1350                         video_device_release(usbvision->rdev);
1351                 usbvision->rdev = NULL;
1352         }
1353
1354         /* Video Device: */
1355         if (usbvision->vdev) {
1356                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1357                        video_device_node_name(usbvision->vdev));
1358                 if (video_is_registered(usbvision->vdev))
1359                         video_unregister_device(usbvision->vdev);
1360                 else
1361                         video_device_release(usbvision->vdev);
1362                 usbvision->vdev = NULL;
1363         }
1364 }
1365
1366 /* register video4linux devices */
1367 static int usbvision_register_video(struct usb_usbvision *usbvision)
1368 {
1369         /* Video Device: */
1370         usbvision->vdev = usbvision_vdev_init(usbvision,
1371                                               &usbvision_video_template,
1372                                               "USBVision Video");
1373         if (usbvision->vdev == NULL)
1374                 goto err_exit;
1375         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1376                 goto err_exit;
1377         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1378                usbvision->nr, video_device_node_name(usbvision->vdev));
1379
1380         /* Radio Device: */
1381         if (usbvision_device_data[usbvision->dev_model].radio) {
1382                 /* usbvision has radio */
1383                 usbvision->rdev = usbvision_vdev_init(usbvision,
1384                                                       &usbvision_radio_template,
1385                                                       "USBVision Radio");
1386                 if (usbvision->rdev == NULL)
1387                         goto err_exit;
1388                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1389                         goto err_exit;
1390                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1391                        usbvision->nr, video_device_node_name(usbvision->rdev));
1392         }
1393         /* all done */
1394         return 0;
1395
1396  err_exit:
1397         dev_err(&usbvision->dev->dev,
1398                 "USBVision[%d]: video_register_device() failed\n",
1399                         usbvision->nr);
1400         usbvision_unregister_video(usbvision);
1401         return -1;
1402 }
1403
1404 /*
1405  * usbvision_alloc()
1406  *
1407  * This code allocates the struct usb_usbvision.
1408  * It is filled with default values.
1409  *
1410  * Returns NULL on error, a pointer to usb_usbvision else.
1411  *
1412  */
1413 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1414                                              struct usb_interface *intf)
1415 {
1416         struct usb_usbvision *usbvision;
1417
1418         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1419         if (usbvision == NULL)
1420                 return NULL;
1421
1422         usbvision->dev = dev;
1423         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1424                 goto err_free;
1425
1426         mutex_init(&usbvision->v4l2_lock);
1427
1428         /* prepare control urb for control messages during interrupts */
1429         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1430         if (usbvision->ctrl_urb == NULL)
1431                 goto err_unreg;
1432         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1433
1434         usbvision_init_power_off_timer(usbvision);
1435
1436         return usbvision;
1437
1438 err_unreg:
1439         v4l2_device_unregister(&usbvision->v4l2_dev);
1440 err_free:
1441         kfree(usbvision);
1442         return NULL;
1443 }
1444
1445 /*
1446  * usbvision_release()
1447  *
1448  * This code does final release of struct usb_usbvision. This happens
1449  * after the device is disconnected -and- all clients closed their files.
1450  *
1451  */
1452 static void usbvision_release(struct usb_usbvision *usbvision)
1453 {
1454         PDEBUG(DBG_PROBE, "");
1455
1456         usbvision_reset_power_off_timer(usbvision);
1457
1458         usbvision->initialized = 0;
1459
1460         usbvision_remove_sysfs(usbvision->vdev);
1461         usbvision_unregister_video(usbvision);
1462
1463         usb_free_urb(usbvision->ctrl_urb);
1464
1465         v4l2_device_unregister(&usbvision->v4l2_dev);
1466         kfree(usbvision);
1467
1468         PDEBUG(DBG_PROBE, "success");
1469 }
1470
1471
1472 /*********************** usb interface **********************************/
1473
1474 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1475 {
1476         int model;
1477
1478         if (usbvision == NULL)
1479                 return;
1480
1481         model = usbvision->dev_model;
1482         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1483
1484         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1485                 usbvision->vin_reg2_preset =
1486                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1487         } else {
1488                 usbvision->vin_reg2_preset = 0;
1489         }
1490
1491         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1492
1493         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1494         usbvision->ctl_input = 0;
1495
1496         /* This should be here to make i2c clients to be able to register */
1497         /* first switch off audio */
1498         if (usbvision_device_data[model].audio_channels > 0)
1499                 usbvision_audio_off(usbvision);
1500         if (!power_on_at_open) {
1501                 /* and then power up the noisy tuner */
1502                 usbvision_power_on(usbvision);
1503                 usbvision_i2c_register(usbvision);
1504         }
1505 }
1506
1507 /*
1508  * usbvision_probe()
1509  *
1510  * This procedure queries device descriptor and accepts the interface
1511  * if it looks like USBVISION video device
1512  *
1513  */
1514 static int usbvision_probe(struct usb_interface *intf,
1515                            const struct usb_device_id *devid)
1516 {
1517         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1518         struct usb_interface *uif;
1519         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1520         const struct usb_host_interface *interface;
1521         struct usb_usbvision *usbvision = NULL;
1522         const struct usb_endpoint_descriptor *endpoint;
1523         int model, i;
1524
1525         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1526                                 dev->descriptor.idVendor,
1527                                 dev->descriptor.idProduct, ifnum);
1528
1529         model = devid->driver_info;
1530         if (model < 0 || model >= usbvision_device_data_size) {
1531                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1532                 return -ENODEV;
1533         }
1534         printk(KERN_INFO "%s: %s found\n", __func__,
1535                                 usbvision_device_data[model].model_string);
1536
1537         if (usbvision_device_data[model].interface >= 0)
1538                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1539         else
1540                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1541         endpoint = &interface->endpoint[1].desc;
1542         if (!usb_endpoint_xfer_isoc(endpoint)) {
1543                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1544                     __func__, ifnum);
1545                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1546                     __func__, endpoint->bmAttributes);
1547                 return -ENODEV;
1548         }
1549         if (usb_endpoint_dir_out(endpoint)) {
1550                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1551                     __func__, ifnum);
1552                 return -ENODEV;
1553         }
1554
1555         usbvision = usbvision_alloc(dev, intf);
1556         if (usbvision == NULL) {
1557                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1558                 return -ENOMEM;
1559         }
1560
1561         if (dev->descriptor.bNumConfigurations > 1)
1562                 usbvision->bridge_type = BRIDGE_NT1004;
1563         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1564                 usbvision->bridge_type = BRIDGE_NT1005;
1565         else
1566                 usbvision->bridge_type = BRIDGE_NT1003;
1567         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1568
1569         /* compute alternate max packet sizes */
1570         uif = dev->actconfig->interface[0];
1571
1572         usbvision->num_alt = uif->num_altsetting;
1573         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1574         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1575         if (usbvision->alt_max_pkt_size == NULL) {
1576                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1577                 return -ENOMEM;
1578         }
1579
1580         for (i = 0; i < usbvision->num_alt; i++) {
1581                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1582                                       wMaxPacketSize);
1583                 usbvision->alt_max_pkt_size[i] =
1584                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1585                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1586                        usbvision->alt_max_pkt_size[i]);
1587         }
1588
1589
1590         usbvision->nr = usbvision_nr++;
1591
1592         usbvision->have_tuner = usbvision_device_data[model].tuner;
1593         if (usbvision->have_tuner)
1594                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1595
1596         usbvision->dev_model = model;
1597         usbvision->remove_pending = 0;
1598         usbvision->iface = ifnum;
1599         usbvision->iface_alt = 0;
1600         usbvision->video_endp = endpoint->bEndpointAddress;
1601         usbvision->isoc_packet_size = 0;
1602         usbvision->usb_bandwidth = 0;
1603         usbvision->user = 0;
1604         usbvision->streaming = stream_off;
1605         usbvision_configure_video(usbvision);
1606         usbvision_register_video(usbvision);
1607
1608         usbvision_create_sysfs(usbvision->vdev);
1609
1610         PDEBUG(DBG_PROBE, "success");
1611         return 0;
1612 }
1613
1614
1615 /*
1616  * usbvision_disconnect()
1617  *
1618  * This procedure stops all driver activity, deallocates interface-private
1619  * structure (pointed by 'ptr') and after that driver should be removable
1620  * with no ill consequences.
1621  *
1622  */
1623 static void usbvision_disconnect(struct usb_interface *intf)
1624 {
1625         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1626
1627         PDEBUG(DBG_PROBE, "");
1628
1629         if (usbvision == NULL) {
1630                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1631                 return;
1632         }
1633
1634         mutex_lock(&usbvision->v4l2_lock);
1635
1636         /* At this time we ask to cancel outstanding URBs */
1637         usbvision_stop_isoc(usbvision);
1638
1639         v4l2_device_disconnect(&usbvision->v4l2_dev);
1640
1641         if (usbvision->power) {
1642                 usbvision_i2c_unregister(usbvision);
1643                 usbvision_power_off(usbvision);
1644         }
1645         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1646
1647         usb_put_dev(usbvision->dev);
1648         usbvision->dev = NULL;  /* USB device is no more */
1649
1650         mutex_unlock(&usbvision->v4l2_lock);
1651
1652         if (usbvision->user) {
1653                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1654                        __func__);
1655                 wake_up_interruptible(&usbvision->wait_frame);
1656                 wake_up_interruptible(&usbvision->wait_stream);
1657         } else {
1658                 usbvision_release(usbvision);
1659         }
1660
1661         PDEBUG(DBG_PROBE, "success");
1662 }
1663
1664 static struct usb_driver usbvision_driver = {
1665         .name           = "usbvision",
1666         .id_table       = usbvision_table,
1667         .probe          = usbvision_probe,
1668         .disconnect     = usbvision_disconnect,
1669 };
1670
1671 /*
1672  * usbvision_init()
1673  *
1674  * This code is run to initialize the driver.
1675  *
1676  */
1677 static int __init usbvision_init(void)
1678 {
1679         int err_code;
1680
1681         PDEBUG(DBG_PROBE, "");
1682
1683         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1684         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1685         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1686
1687         /* disable planar mode support unless compression enabled */
1688         if (isoc_mode != ISOC_MODE_COMPRESS) {
1689                 /* FIXME : not the right way to set supported flag */
1690                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1691                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1692         }
1693
1694         err_code = usb_register(&usbvision_driver);
1695
1696         if (err_code == 0) {
1697                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1698                 PDEBUG(DBG_PROBE, "success");
1699         }
1700         return err_code;
1701 }
1702
1703 static void __exit usbvision_exit(void)
1704 {
1705         PDEBUG(DBG_PROBE, "");
1706
1707         usb_deregister(&usbvision_driver);
1708         PDEBUG(DBG_PROBE, "success");
1709 }
1710
1711 module_init(usbvision_init);
1712 module_exit(usbvision_exit);
1713
1714 /*
1715  * Overrides for Emacs so that we follow Linus's tabbing style.
1716  * ---------------------------------------------------------------------------
1717  * Local variables:
1718  * c-basic-offset: 8
1719  * End:
1720  */