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