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V4L/DVB (11045): v4l2: call v4l2_device_disconnect in USB drivers.
[deliverable/linux.git] / drivers / media / video / usbvision / usbvision-video.c
1 /*
2 * USB USBVISION Video device driver 0.9.9
3 *
4 *
5 *
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7 *
8 * This module is part of usbvision driver project.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Let's call the version 0.... until compression decoding is completely
25 * implemented.
26 *
27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28 * It was based on USB CPiA driver written by Peter Pregler,
29 * Scott J. Bertin and Johannes Erdfelt
30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32 * Updates to driver completed by Dwaine P. Garden
33 *
34 *
35 * TODO:
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
38 * nt1003 memory.
39 * - Add audio on endpoint 3 for nt1004 chip.
40 * Seems impossible, needs a codec interface. Which one?
41 * - Clean up the driver.
42 * - optimization for performance.
43 * - Add Videotext capability (VBI). Working on it.....
44 * - Check audio for other devices
45 *
46 */
47
48 #include <linux/version.h>
49 #include <linux/kernel.h>
50 #include <linux/list.h>
51 #include <linux/timer.h>
52 #include <linux/slab.h>
53 #include <linux/mm.h>
54 #include <linux/utsname.h>
55 #include <linux/highmem.h>
56 #include <linux/vmalloc.h>
57 #include <linux/module.h>
58 #include <linux/init.h>
59 #include <linux/spinlock.h>
60 #include <asm/io.h>
61 #include <linux/videodev2.h>
62 #include <linux/i2c.h>
63
64 #include <media/saa7115.h>
65 #include <media/v4l2-common.h>
66 #include <media/v4l2-ioctl.h>
67 #include <media/tuner.h>
68
69 #include <linux/workqueue.h>
70
71 #include "usbvision.h"
72 #include "usbvision-cards.h"
73
74 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
75 Dwaine Garden <DwaineGarden@rogers.com>"
76 #define DRIVER_NAME "usbvision"
77 #define DRIVER_ALIAS "USBVision"
78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
79 #define DRIVER_LICENSE "GPL"
80 #define USBVISION_DRIVER_VERSION_MAJOR 0
81 #define USBVISION_DRIVER_VERSION_MINOR 9
82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
84 USBVISION_DRIVER_VERSION_MINOR,\
85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
87 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
88 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
89
90 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
91
92
93 #ifdef USBVISION_DEBUG
94 #define PDEBUG(level, fmt, args...) { \
95 if (video_debug & (level)) \
96 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
97 __func__, __LINE__ , ## args); \
98 }
99 #else
100 #define PDEBUG(level, fmt, args...) do {} while(0)
101 #endif
102
103 #define DBG_IO 1<<1
104 #define DBG_PROBE 1<<2
105 #define DBG_MMAP 1<<3
106
107 //String operations
108 #define rmspace(str) while(*str==' ') str++;
109 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
110
111
112 /* sequential number of usbvision device */
113 static int usbvision_nr;
114
115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
116 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
117 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
118 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
119 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
120 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
121 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
122 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
123 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
124 };
125
126 /* Function prototypes */
127 static void usbvision_release(struct usb_usbvision *usbvision);
128
129 /* Default initialization of device driver parameters */
130 /* Set the default format for ISOC endpoint */
131 static int isocMode = ISOC_MODE_COMPRESS;
132 /* Set the default Debug Mode of the device driver */
133 static int video_debug;
134 /* Set the default device to power on at startup */
135 static int PowerOnAtOpen = 1;
136 /* Sequential Number of Video Device */
137 static int video_nr = -1;
138 /* Sequential Number of Radio Device */
139 static int radio_nr = -1;
140 /* Sequential Number of VBI Device */
141 static int vbi_nr = -1;
142
143 /* Grab parameters for the device driver */
144
145 /* Showing parameters under SYSFS */
146 module_param(isocMode, int, 0444);
147 module_param(video_debug, int, 0444);
148 module_param(PowerOnAtOpen, int, 0444);
149 module_param(video_nr, int, 0444);
150 module_param(radio_nr, int, 0444);
151 module_param(vbi_nr, int, 0444);
152
153 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
154 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
155 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
156 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
157 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
158 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)");
159
160
161 // Misc stuff
162 MODULE_AUTHOR(DRIVER_AUTHOR);
163 MODULE_DESCRIPTION(DRIVER_DESC);
164 MODULE_LICENSE(DRIVER_LICENSE);
165 MODULE_VERSION(USBVISION_VERSION_STRING);
166 MODULE_ALIAS(DRIVER_ALIAS);
167
168
169 /*****************************************************************************/
170 /* SYSFS Code - Copied from the stv680.c usb module. */
171 /* Device information is located at /sys/class/video4linux/video0 */
172 /* Device parameters information is located at /sys/module/usbvision */
173 /* Device USB Information is located at */
174 /* /sys/bus/usb/drivers/USBVision Video Grabber */
175 /*****************************************************************************/
176
177 #define YES_NO(x) ((x) ? "Yes" : "No")
178
179 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
180 {
181 struct video_device *vdev =
182 container_of(cd, struct video_device, dev);
183 return video_get_drvdata(vdev);
184 }
185
186 static ssize_t show_version(struct device *cd,
187 struct device_attribute *attr, char *buf)
188 {
189 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
190 }
191 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
192
193 static ssize_t show_model(struct device *cd,
194 struct device_attribute *attr, char *buf)
195 {
196 struct video_device *vdev =
197 container_of(cd, struct video_device, dev);
198 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
199 return sprintf(buf, "%s\n",
200 usbvision_device_data[usbvision->DevModel].ModelString);
201 }
202 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
203
204 static ssize_t show_hue(struct device *cd,
205 struct device_attribute *attr, char *buf)
206 {
207 struct video_device *vdev =
208 container_of(cd, struct video_device, dev);
209 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
210 struct v4l2_control ctrl;
211 ctrl.id = V4L2_CID_HUE;
212 ctrl.value = 0;
213 if(usbvision->user)
214 call_all(usbvision, core, g_ctrl, &ctrl);
215 return sprintf(buf, "%d\n", ctrl.value);
216 }
217 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
218
219 static ssize_t show_contrast(struct device *cd,
220 struct device_attribute *attr, char *buf)
221 {
222 struct video_device *vdev =
223 container_of(cd, struct video_device, dev);
224 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
225 struct v4l2_control ctrl;
226 ctrl.id = V4L2_CID_CONTRAST;
227 ctrl.value = 0;
228 if(usbvision->user)
229 call_all(usbvision, core, g_ctrl, &ctrl);
230 return sprintf(buf, "%d\n", ctrl.value);
231 }
232 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
233
234 static ssize_t show_brightness(struct device *cd,
235 struct device_attribute *attr, char *buf)
236 {
237 struct video_device *vdev =
238 container_of(cd, struct video_device, dev);
239 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
240 struct v4l2_control ctrl;
241 ctrl.id = V4L2_CID_BRIGHTNESS;
242 ctrl.value = 0;
243 if(usbvision->user)
244 call_all(usbvision, core, g_ctrl, &ctrl);
245 return sprintf(buf, "%d\n", ctrl.value);
246 }
247 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
248
249 static ssize_t show_saturation(struct device *cd,
250 struct device_attribute *attr, char *buf)
251 {
252 struct video_device *vdev =
253 container_of(cd, struct video_device, dev);
254 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
255 struct v4l2_control ctrl;
256 ctrl.id = V4L2_CID_SATURATION;
257 ctrl.value = 0;
258 if(usbvision->user)
259 call_all(usbvision, core, g_ctrl, &ctrl);
260 return sprintf(buf, "%d\n", ctrl.value);
261 }
262 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
263
264 static ssize_t show_streaming(struct device *cd,
265 struct device_attribute *attr, char *buf)
266 {
267 struct video_device *vdev =
268 container_of(cd, struct video_device, dev);
269 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
270 return sprintf(buf, "%s\n",
271 YES_NO(usbvision->streaming==Stream_On?1:0));
272 }
273 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
274
275 static ssize_t show_compression(struct device *cd,
276 struct device_attribute *attr, char *buf)
277 {
278 struct video_device *vdev =
279 container_of(cd, struct video_device, dev);
280 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
281 return sprintf(buf, "%s\n",
282 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
283 }
284 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
285
286 static ssize_t show_device_bridge(struct device *cd,
287 struct device_attribute *attr, char *buf)
288 {
289 struct video_device *vdev =
290 container_of(cd, struct video_device, dev);
291 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
292 return sprintf(buf, "%d\n", usbvision->bridgeType);
293 }
294 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
295
296 static void usbvision_create_sysfs(struct video_device *vdev)
297 {
298 int res;
299 if (!vdev)
300 return;
301 do {
302 res = device_create_file(&vdev->dev, &dev_attr_version);
303 if (res<0)
304 break;
305 res = device_create_file(&vdev->dev, &dev_attr_model);
306 if (res<0)
307 break;
308 res = device_create_file(&vdev->dev, &dev_attr_hue);
309 if (res<0)
310 break;
311 res = device_create_file(&vdev->dev, &dev_attr_contrast);
312 if (res<0)
313 break;
314 res = device_create_file(&vdev->dev, &dev_attr_brightness);
315 if (res<0)
316 break;
317 res = device_create_file(&vdev->dev, &dev_attr_saturation);
318 if (res<0)
319 break;
320 res = device_create_file(&vdev->dev, &dev_attr_streaming);
321 if (res<0)
322 break;
323 res = device_create_file(&vdev->dev, &dev_attr_compression);
324 if (res<0)
325 break;
326 res = device_create_file(&vdev->dev, &dev_attr_bridge);
327 if (res>=0)
328 return;
329 } while (0);
330
331 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
332 }
333
334 static void usbvision_remove_sysfs(struct video_device *vdev)
335 {
336 if (vdev) {
337 device_remove_file(&vdev->dev, &dev_attr_version);
338 device_remove_file(&vdev->dev, &dev_attr_model);
339 device_remove_file(&vdev->dev, &dev_attr_hue);
340 device_remove_file(&vdev->dev, &dev_attr_contrast);
341 device_remove_file(&vdev->dev, &dev_attr_brightness);
342 device_remove_file(&vdev->dev, &dev_attr_saturation);
343 device_remove_file(&vdev->dev, &dev_attr_streaming);
344 device_remove_file(&vdev->dev, &dev_attr_compression);
345 device_remove_file(&vdev->dev, &dev_attr_bridge);
346 }
347 }
348
349 /*
350 * usbvision_open()
351 *
352 * This is part of Video 4 Linux API. The driver can be opened by one
353 * client only (checks internal counter 'usbvision->user'). The procedure
354 * then allocates buffers needed for video processing.
355 *
356 */
357 static int usbvision_v4l2_open(struct file *file)
358 {
359 struct usb_usbvision *usbvision = video_drvdata(file);
360 int errCode = 0;
361
362 PDEBUG(DBG_IO, "open");
363
364 lock_kernel();
365 usbvision_reset_powerOffTimer(usbvision);
366
367 if (usbvision->user)
368 errCode = -EBUSY;
369 else {
370 /* Allocate memory for the scratch ring buffer */
371 errCode = usbvision_scratch_alloc(usbvision);
372 if (isocMode==ISOC_MODE_COMPRESS) {
373 /* Allocate intermediate decompression buffers
374 only if needed */
375 errCode = usbvision_decompress_alloc(usbvision);
376 }
377 if (errCode) {
378 /* Deallocate all buffers if trouble */
379 usbvision_scratch_free(usbvision);
380 usbvision_decompress_free(usbvision);
381 }
382 }
383
384 /* If so far no errors then we shall start the camera */
385 if (!errCode) {
386 mutex_lock(&usbvision->lock);
387 if (usbvision->power == 0) {
388 usbvision_power_on(usbvision);
389 usbvision_i2c_register(usbvision);
390 }
391
392 /* Send init sequence only once, it's large! */
393 if (!usbvision->initialized) {
394 int setup_ok = 0;
395 setup_ok = usbvision_setup(usbvision,isocMode);
396 if (setup_ok)
397 usbvision->initialized = 1;
398 else
399 errCode = -EBUSY;
400 }
401
402 if (!errCode) {
403 usbvision_begin_streaming(usbvision);
404 errCode = usbvision_init_isoc(usbvision);
405 /* device must be initialized before isoc transfer */
406 usbvision_muxsel(usbvision,0);
407 usbvision->user++;
408 } else {
409 if (PowerOnAtOpen) {
410 usbvision_i2c_unregister(usbvision);
411 usbvision_power_off(usbvision);
412 usbvision->initialized = 0;
413 }
414 }
415 mutex_unlock(&usbvision->lock);
416 }
417
418 /* prepare queues */
419 usbvision_empty_framequeues(usbvision);
420
421 PDEBUG(DBG_IO, "success");
422 unlock_kernel();
423 return errCode;
424 }
425
426 /*
427 * usbvision_v4l2_close()
428 *
429 * This is part of Video 4 Linux API. The procedure
430 * stops streaming and deallocates all buffers that were earlier
431 * allocated in usbvision_v4l2_open().
432 *
433 */
434 static int usbvision_v4l2_close(struct file *file)
435 {
436 struct usb_usbvision *usbvision = video_drvdata(file);
437
438 PDEBUG(DBG_IO, "close");
439 mutex_lock(&usbvision->lock);
440
441 usbvision_audio_off(usbvision);
442 usbvision_restart_isoc(usbvision);
443 usbvision_stop_isoc(usbvision);
444
445 usbvision_decompress_free(usbvision);
446 usbvision_frames_free(usbvision);
447 usbvision_empty_framequeues(usbvision);
448 usbvision_scratch_free(usbvision);
449
450 usbvision->user--;
451
452 if (PowerOnAtOpen) {
453 /* power off in a little while
454 to avoid off/on every close/open short sequences */
455 usbvision_set_powerOffTimer(usbvision);
456 usbvision->initialized = 0;
457 }
458
459 mutex_unlock(&usbvision->lock);
460
461 if (usbvision->remove_pending) {
462 printk(KERN_INFO "%s: Final disconnect\n", __func__);
463 usbvision_release(usbvision);
464 }
465
466 PDEBUG(DBG_IO, "success");
467 return 0;
468 }
469
470
471 /*
472 * usbvision_ioctl()
473 *
474 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
475 *
476 */
477 #ifdef CONFIG_VIDEO_ADV_DEBUG
478 static int vidioc_g_register (struct file *file, void *priv,
479 struct v4l2_dbg_register *reg)
480 {
481 struct usb_usbvision *usbvision = video_drvdata(file);
482 int errCode;
483
484 if (!v4l2_chip_match_host(&reg->match))
485 return -EINVAL;
486 /* NT100x has a 8-bit register space */
487 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
488 if (errCode < 0) {
489 dev_err(&usbvision->vdev->dev,
490 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
491 __func__, errCode);
492 return errCode;
493 }
494 reg->val = errCode;
495 reg->size = 1;
496 return 0;
497 }
498
499 static int vidioc_s_register (struct file *file, void *priv,
500 struct v4l2_dbg_register *reg)
501 {
502 struct usb_usbvision *usbvision = video_drvdata(file);
503 int errCode;
504
505 if (!v4l2_chip_match_host(&reg->match))
506 return -EINVAL;
507 /* NT100x has a 8-bit register space */
508 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
509 if (errCode < 0) {
510 dev_err(&usbvision->vdev->dev,
511 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
512 __func__, errCode);
513 return errCode;
514 }
515 return 0;
516 }
517 #endif
518
519 static int vidioc_querycap (struct file *file, void *priv,
520 struct v4l2_capability *vc)
521 {
522 struct usb_usbvision *usbvision = video_drvdata(file);
523
524 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
525 strlcpy(vc->card,
526 usbvision_device_data[usbvision->DevModel].ModelString,
527 sizeof(vc->card));
528 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
529 vc->version = USBVISION_DRIVER_VERSION;
530 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
531 V4L2_CAP_AUDIO |
532 V4L2_CAP_READWRITE |
533 V4L2_CAP_STREAMING |
534 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
535 return 0;
536 }
537
538 static int vidioc_enum_input (struct file *file, void *priv,
539 struct v4l2_input *vi)
540 {
541 struct usb_usbvision *usbvision = video_drvdata(file);
542 int chan;
543
544 if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
545 return -EINVAL;
546 if (usbvision->have_tuner) {
547 chan = vi->index;
548 } else {
549 chan = vi->index + 1; /*skip Television string*/
550 }
551 /* Determine the requested input characteristics
552 specific for each usbvision card model */
553 switch(chan) {
554 case 0:
555 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
556 strcpy(vi->name, "White Video Input");
557 } else {
558 strcpy(vi->name, "Television");
559 vi->type = V4L2_INPUT_TYPE_TUNER;
560 vi->audioset = 1;
561 vi->tuner = chan;
562 vi->std = USBVISION_NORMS;
563 }
564 break;
565 case 1:
566 vi->type = V4L2_INPUT_TYPE_CAMERA;
567 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
568 strcpy(vi->name, "Green Video Input");
569 } else {
570 strcpy(vi->name, "Composite Video Input");
571 }
572 vi->std = V4L2_STD_PAL;
573 break;
574 case 2:
575 vi->type = V4L2_INPUT_TYPE_CAMERA;
576 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
577 strcpy(vi->name, "Yellow Video Input");
578 } else {
579 strcpy(vi->name, "S-Video Input");
580 }
581 vi->std = V4L2_STD_PAL;
582 break;
583 case 3:
584 vi->type = V4L2_INPUT_TYPE_CAMERA;
585 strcpy(vi->name, "Red Video Input");
586 vi->std = V4L2_STD_PAL;
587 break;
588 }
589 return 0;
590 }
591
592 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
593 {
594 struct usb_usbvision *usbvision = video_drvdata(file);
595
596 *input = usbvision->ctl_input;
597 return 0;
598 }
599
600 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
601 {
602 struct usb_usbvision *usbvision = video_drvdata(file);
603
604 if ((input >= usbvision->video_inputs) || (input < 0) )
605 return -EINVAL;
606
607 mutex_lock(&usbvision->lock);
608 usbvision_muxsel(usbvision, input);
609 usbvision_set_input(usbvision);
610 usbvision_set_output(usbvision,
611 usbvision->curwidth,
612 usbvision->curheight);
613 mutex_unlock(&usbvision->lock);
614 return 0;
615 }
616
617 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
618 {
619 struct usb_usbvision *usbvision = video_drvdata(file);
620
621 usbvision->tvnormId=*id;
622
623 mutex_lock(&usbvision->lock);
624 call_all(usbvision, tuner, s_std, usbvision->tvnormId);
625 mutex_unlock(&usbvision->lock);
626 /* propagate the change to the decoder */
627 usbvision_muxsel(usbvision, usbvision->ctl_input);
628
629 return 0;
630 }
631
632 static int vidioc_g_tuner (struct file *file, void *priv,
633 struct v4l2_tuner *vt)
634 {
635 struct usb_usbvision *usbvision = video_drvdata(file);
636
637 if (!usbvision->have_tuner || vt->index) // Only tuner 0
638 return -EINVAL;
639 if(usbvision->radio) {
640 strcpy(vt->name, "Radio");
641 vt->type = V4L2_TUNER_RADIO;
642 } else {
643 strcpy(vt->name, "Television");
644 }
645 /* Let clients fill in the remainder of this struct */
646 call_all(usbvision, tuner, g_tuner, vt);
647
648 return 0;
649 }
650
651 static int vidioc_s_tuner (struct file *file, void *priv,
652 struct v4l2_tuner *vt)
653 {
654 struct usb_usbvision *usbvision = video_drvdata(file);
655
656 // Only no or one tuner for now
657 if (!usbvision->have_tuner || vt->index)
658 return -EINVAL;
659 /* let clients handle this */
660 call_all(usbvision, tuner, s_tuner, vt);
661
662 return 0;
663 }
664
665 static int vidioc_g_frequency (struct file *file, void *priv,
666 struct v4l2_frequency *freq)
667 {
668 struct usb_usbvision *usbvision = video_drvdata(file);
669
670 freq->tuner = 0; // Only one tuner
671 if(usbvision->radio) {
672 freq->type = V4L2_TUNER_RADIO;
673 } else {
674 freq->type = V4L2_TUNER_ANALOG_TV;
675 }
676 freq->frequency = usbvision->freq;
677
678 return 0;
679 }
680
681 static int vidioc_s_frequency (struct file *file, void *priv,
682 struct v4l2_frequency *freq)
683 {
684 struct usb_usbvision *usbvision = video_drvdata(file);
685
686 // Only no or one tuner for now
687 if (!usbvision->have_tuner || freq->tuner)
688 return -EINVAL;
689
690 usbvision->freq = freq->frequency;
691 call_all(usbvision, tuner, s_frequency, freq);
692
693 return 0;
694 }
695
696 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
697 {
698 struct usb_usbvision *usbvision = video_drvdata(file);
699
700 if(usbvision->radio) {
701 strcpy(a->name,"Radio");
702 } else {
703 strcpy(a->name, "TV");
704 }
705
706 return 0;
707 }
708
709 static int vidioc_s_audio (struct file *file, void *fh,
710 struct v4l2_audio *a)
711 {
712 if(a->index) {
713 return -EINVAL;
714 }
715
716 return 0;
717 }
718
719 static int vidioc_queryctrl (struct file *file, void *priv,
720 struct v4l2_queryctrl *ctrl)
721 {
722 struct usb_usbvision *usbvision = video_drvdata(file);
723
724 call_all(usbvision, core, queryctrl, ctrl);
725
726 if (!ctrl->type)
727 return -EINVAL;
728
729 return 0;
730 }
731
732 static int vidioc_g_ctrl (struct file *file, void *priv,
733 struct v4l2_control *ctrl)
734 {
735 struct usb_usbvision *usbvision = video_drvdata(file);
736 call_all(usbvision, core, g_ctrl, ctrl);
737
738 return 0;
739 }
740
741 static int vidioc_s_ctrl (struct file *file, void *priv,
742 struct v4l2_control *ctrl)
743 {
744 struct usb_usbvision *usbvision = video_drvdata(file);
745 call_all(usbvision, core, s_ctrl, ctrl);
746
747 return 0;
748 }
749
750 static int vidioc_reqbufs (struct file *file,
751 void *priv, struct v4l2_requestbuffers *vr)
752 {
753 struct usb_usbvision *usbvision = video_drvdata(file);
754 int ret;
755
756 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
757
758 /* Check input validity:
759 the user must do a VIDEO CAPTURE and MMAP method. */
760 if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
761 (vr->memory != V4L2_MEMORY_MMAP))
762 return -EINVAL;
763
764 if(usbvision->streaming == Stream_On) {
765 if ((ret = usbvision_stream_interrupt(usbvision)))
766 return ret;
767 }
768
769 usbvision_frames_free(usbvision);
770 usbvision_empty_framequeues(usbvision);
771 vr->count = usbvision_frames_alloc(usbvision,vr->count);
772
773 usbvision->curFrame = NULL;
774
775 return 0;
776 }
777
778 static int vidioc_querybuf (struct file *file,
779 void *priv, struct v4l2_buffer *vb)
780 {
781 struct usb_usbvision *usbvision = video_drvdata(file);
782 struct usbvision_frame *frame;
783
784 /* FIXME : must control
785 that buffers are mapped (VIDIOC_REQBUFS has been called) */
786 if(vb->index>=usbvision->num_frames) {
787 return -EINVAL;
788 }
789 /* Updating the corresponding frame state */
790 vb->flags = 0;
791 frame = &usbvision->frame[vb->index];
792 if(frame->grabstate >= FrameState_Ready)
793 vb->flags |= V4L2_BUF_FLAG_QUEUED;
794 if(frame->grabstate >= FrameState_Done)
795 vb->flags |= V4L2_BUF_FLAG_DONE;
796 if(frame->grabstate == FrameState_Unused)
797 vb->flags |= V4L2_BUF_FLAG_MAPPED;
798 vb->memory = V4L2_MEMORY_MMAP;
799
800 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
801
802 vb->memory = V4L2_MEMORY_MMAP;
803 vb->field = V4L2_FIELD_NONE;
804 vb->length = usbvision->curwidth*
805 usbvision->curheight*
806 usbvision->palette.bytes_per_pixel;
807 vb->timestamp = usbvision->frame[vb->index].timestamp;
808 vb->sequence = usbvision->frame[vb->index].sequence;
809 return 0;
810 }
811
812 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
813 {
814 struct usb_usbvision *usbvision = video_drvdata(file);
815 struct usbvision_frame *frame;
816 unsigned long lock_flags;
817
818 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
819 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
820 return -EINVAL;
821 }
822 if(vb->index>=usbvision->num_frames) {
823 return -EINVAL;
824 }
825
826 frame = &usbvision->frame[vb->index];
827
828 if (frame->grabstate != FrameState_Unused) {
829 return -EAGAIN;
830 }
831
832 /* Mark it as ready and enqueue frame */
833 frame->grabstate = FrameState_Ready;
834 frame->scanstate = ScanState_Scanning;
835 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
836
837 vb->flags &= ~V4L2_BUF_FLAG_DONE;
838
839 /* set v4l2_format index */
840 frame->v4l2_format = usbvision->palette;
841
842 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
843 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
844 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
845
846 return 0;
847 }
848
849 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
850 {
851 struct usb_usbvision *usbvision = video_drvdata(file);
852 int ret;
853 struct usbvision_frame *f;
854 unsigned long lock_flags;
855
856 if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
857 return -EINVAL;
858
859 if (list_empty(&(usbvision->outqueue))) {
860 if (usbvision->streaming == Stream_Idle)
861 return -EINVAL;
862 ret = wait_event_interruptible
863 (usbvision->wait_frame,
864 !list_empty(&(usbvision->outqueue)));
865 if (ret)
866 return ret;
867 }
868
869 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
870 f = list_entry(usbvision->outqueue.next,
871 struct usbvision_frame, frame);
872 list_del(usbvision->outqueue.next);
873 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
874
875 f->grabstate = FrameState_Unused;
876
877 vb->memory = V4L2_MEMORY_MMAP;
878 vb->flags = V4L2_BUF_FLAG_MAPPED |
879 V4L2_BUF_FLAG_QUEUED |
880 V4L2_BUF_FLAG_DONE;
881 vb->index = f->index;
882 vb->sequence = f->sequence;
883 vb->timestamp = f->timestamp;
884 vb->field = V4L2_FIELD_NONE;
885 vb->bytesused = f->scanlength;
886
887 return 0;
888 }
889
890 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
891 {
892 struct usb_usbvision *usbvision = video_drvdata(file);
893
894 usbvision->streaming = Stream_On;
895 call_all(usbvision, video, s_stream, 1);
896
897 return 0;
898 }
899
900 static int vidioc_streamoff(struct file *file,
901 void *priv, enum v4l2_buf_type type)
902 {
903 struct usb_usbvision *usbvision = video_drvdata(file);
904
905 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
906 return -EINVAL;
907
908 if(usbvision->streaming == Stream_On) {
909 usbvision_stream_interrupt(usbvision);
910 /* Stop all video streamings */
911 call_all(usbvision, video, s_stream, 0);
912 }
913 usbvision_empty_framequeues(usbvision);
914
915 return 0;
916 }
917
918 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
919 struct v4l2_fmtdesc *vfd)
920 {
921 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
922 return -EINVAL;
923 }
924 vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
925 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
926 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
927 return 0;
928 }
929
930 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
931 struct v4l2_format *vf)
932 {
933 struct usb_usbvision *usbvision = video_drvdata(file);
934 vf->fmt.pix.width = usbvision->curwidth;
935 vf->fmt.pix.height = usbvision->curheight;
936 vf->fmt.pix.pixelformat = usbvision->palette.format;
937 vf->fmt.pix.bytesperline =
938 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
939 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
940 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
941 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
942
943 return 0;
944 }
945
946 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
947 struct v4l2_format *vf)
948 {
949 struct usb_usbvision *usbvision = video_drvdata(file);
950 int formatIdx;
951
952 /* Find requested format in available ones */
953 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
954 if(vf->fmt.pix.pixelformat ==
955 usbvision_v4l2_format[formatIdx].format) {
956 usbvision->palette = usbvision_v4l2_format[formatIdx];
957 break;
958 }
959 }
960 /* robustness */
961 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
962 return -EINVAL;
963 }
964 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
965 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
966
967 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
968 usbvision->palette.bytes_per_pixel;
969 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
970
971 return 0;
972 }
973
974 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
975 struct v4l2_format *vf)
976 {
977 struct usb_usbvision *usbvision = video_drvdata(file);
978 int ret;
979
980 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
981 return ret;
982 }
983
984 /* stop io in case it is already in progress */
985 if(usbvision->streaming == Stream_On) {
986 if ((ret = usbvision_stream_interrupt(usbvision)))
987 return ret;
988 }
989 usbvision_frames_free(usbvision);
990 usbvision_empty_framequeues(usbvision);
991
992 usbvision->curFrame = NULL;
993
994 /* by now we are committed to the new data... */
995 mutex_lock(&usbvision->lock);
996 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
997 mutex_unlock(&usbvision->lock);
998
999 return 0;
1000 }
1001
1002 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1003 size_t count, loff_t *ppos)
1004 {
1005 struct usb_usbvision *usbvision = video_drvdata(file);
1006 int noblock = file->f_flags & O_NONBLOCK;
1007 unsigned long lock_flags;
1008
1009 int ret,i;
1010 struct usbvision_frame *frame;
1011
1012 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1013 (unsigned long)count, noblock);
1014
1015 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1016 return -EFAULT;
1017
1018 /* This entry point is compatible with the mmap routines
1019 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1020 to get frames or call read on the device. */
1021 if(!usbvision->num_frames) {
1022 /* First, allocate some frames to work with
1023 if this has not been done with VIDIOC_REQBUF */
1024 usbvision_frames_free(usbvision);
1025 usbvision_empty_framequeues(usbvision);
1026 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1027 }
1028
1029 if(usbvision->streaming != Stream_On) {
1030 /* no stream is running, make it running ! */
1031 usbvision->streaming = Stream_On;
1032 call_all(usbvision, video, s_stream, 1);
1033 }
1034
1035 /* Then, enqueue as many frames as possible
1036 (like a user of VIDIOC_QBUF would do) */
1037 for(i=0;i<usbvision->num_frames;i++) {
1038 frame = &usbvision->frame[i];
1039 if(frame->grabstate == FrameState_Unused) {
1040 /* Mark it as ready and enqueue frame */
1041 frame->grabstate = FrameState_Ready;
1042 frame->scanstate = ScanState_Scanning;
1043 /* Accumulated in usbvision_parse_data() */
1044 frame->scanlength = 0;
1045
1046 /* set v4l2_format index */
1047 frame->v4l2_format = usbvision->palette;
1048
1049 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1050 list_add_tail(&frame->frame, &usbvision->inqueue);
1051 spin_unlock_irqrestore(&usbvision->queue_lock,
1052 lock_flags);
1053 }
1054 }
1055
1056 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1057 if (list_empty(&(usbvision->outqueue))) {
1058 if(noblock)
1059 return -EAGAIN;
1060
1061 ret = wait_event_interruptible
1062 (usbvision->wait_frame,
1063 !list_empty(&(usbvision->outqueue)));
1064 if (ret)
1065 return ret;
1066 }
1067
1068 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1069 frame = list_entry(usbvision->outqueue.next,
1070 struct usbvision_frame, frame);
1071 list_del(usbvision->outqueue.next);
1072 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1073
1074 /* An error returns an empty frame */
1075 if (frame->grabstate == FrameState_Error) {
1076 frame->bytes_read = 0;
1077 return 0;
1078 }
1079
1080 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1081 __func__,
1082 frame->index, frame->bytes_read, frame->scanlength);
1083
1084 /* copy bytes to user space; we allow for partials reads */
1085 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1086 count = frame->scanlength - frame->bytes_read;
1087
1088 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1089 return -EFAULT;
1090 }
1091
1092 frame->bytes_read += count;
1093 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1094 __func__,
1095 (unsigned long)count, frame->bytes_read);
1096
1097 /* For now, forget the frame if it has not been read in one shot. */
1098 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1099 frame->bytes_read = 0;
1100
1101 /* Mark it as available to be used again. */
1102 frame->grabstate = FrameState_Unused;
1103 /* } */
1104
1105 return count;
1106 }
1107
1108 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1109 {
1110 unsigned long size = vma->vm_end - vma->vm_start,
1111 start = vma->vm_start;
1112 void *pos;
1113 u32 i;
1114 struct usb_usbvision *usbvision = video_drvdata(file);
1115
1116 PDEBUG(DBG_MMAP, "mmap");
1117
1118 mutex_lock(&usbvision->lock);
1119
1120 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1121 mutex_unlock(&usbvision->lock);
1122 return -EFAULT;
1123 }
1124
1125 if (!(vma->vm_flags & VM_WRITE) ||
1126 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1127 mutex_unlock(&usbvision->lock);
1128 return -EINVAL;
1129 }
1130
1131 for (i = 0; i < usbvision->num_frames; i++) {
1132 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1133 vma->vm_pgoff)
1134 break;
1135 }
1136 if (i == usbvision->num_frames) {
1137 PDEBUG(DBG_MMAP,
1138 "mmap: user supplied mapping address is out of range");
1139 mutex_unlock(&usbvision->lock);
1140 return -EINVAL;
1141 }
1142
1143 /* VM_IO is eventually going to replace PageReserved altogether */
1144 vma->vm_flags |= VM_IO;
1145 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1146
1147 pos = usbvision->frame[i].data;
1148 while (size > 0) {
1149
1150 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1151 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1152 mutex_unlock(&usbvision->lock);
1153 return -EAGAIN;
1154 }
1155 start += PAGE_SIZE;
1156 pos += PAGE_SIZE;
1157 size -= PAGE_SIZE;
1158 }
1159
1160 mutex_unlock(&usbvision->lock);
1161 return 0;
1162 }
1163
1164
1165 /*
1166 * Here comes the stuff for radio on usbvision based devices
1167 *
1168 */
1169 static int usbvision_radio_open(struct file *file)
1170 {
1171 struct usb_usbvision *usbvision = video_drvdata(file);
1172 int errCode = 0;
1173
1174 PDEBUG(DBG_IO, "%s:", __func__);
1175
1176 mutex_lock(&usbvision->lock);
1177
1178 if (usbvision->user) {
1179 dev_err(&usbvision->rdev->dev,
1180 "%s: Someone tried to open an already opened USBVision Radio!\n",
1181 __func__);
1182 errCode = -EBUSY;
1183 }
1184 else {
1185 if(PowerOnAtOpen) {
1186 usbvision_reset_powerOffTimer(usbvision);
1187 if (usbvision->power == 0) {
1188 usbvision_power_on(usbvision);
1189 usbvision_i2c_register(usbvision);
1190 }
1191 }
1192
1193 /* Alternate interface 1 is is the biggest frame size */
1194 errCode = usbvision_set_alternate(usbvision);
1195 if (errCode < 0) {
1196 usbvision->last_error = errCode;
1197 errCode = -EBUSY;
1198 goto out;
1199 }
1200
1201 // If so far no errors then we shall start the radio
1202 usbvision->radio = 1;
1203 call_all(usbvision, tuner, s_radio);
1204 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1205 usbvision->user++;
1206 }
1207
1208 if (errCode) {
1209 if (PowerOnAtOpen) {
1210 usbvision_i2c_unregister(usbvision);
1211 usbvision_power_off(usbvision);
1212 usbvision->initialized = 0;
1213 }
1214 }
1215 out:
1216 mutex_unlock(&usbvision->lock);
1217 return errCode;
1218 }
1219
1220
1221 static int usbvision_radio_close(struct file *file)
1222 {
1223 struct usb_usbvision *usbvision = video_drvdata(file);
1224 int errCode = 0;
1225
1226 PDEBUG(DBG_IO, "");
1227
1228 mutex_lock(&usbvision->lock);
1229
1230 /* Set packet size to 0 */
1231 usbvision->ifaceAlt=0;
1232 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1233 usbvision->ifaceAlt);
1234
1235 usbvision_audio_off(usbvision);
1236 usbvision->radio=0;
1237 usbvision->user--;
1238
1239 if (PowerOnAtOpen) {
1240 usbvision_set_powerOffTimer(usbvision);
1241 usbvision->initialized = 0;
1242 }
1243
1244 mutex_unlock(&usbvision->lock);
1245
1246 if (usbvision->remove_pending) {
1247 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1248 usbvision_release(usbvision);
1249 }
1250
1251 PDEBUG(DBG_IO, "success");
1252 return errCode;
1253 }
1254
1255 /*
1256 * Here comes the stuff for vbi on usbvision based devices
1257 *
1258 */
1259 static int usbvision_vbi_open(struct file *file)
1260 {
1261 /* TODO */
1262 return -ENODEV;
1263 }
1264
1265 static int usbvision_vbi_close(struct file *file)
1266 {
1267 /* TODO */
1268 return -ENODEV;
1269 }
1270
1271 static long usbvision_do_vbi_ioctl(struct file *file,
1272 unsigned int cmd, void *arg)
1273 {
1274 /* TODO */
1275 return -ENOIOCTLCMD;
1276 }
1277
1278 static long usbvision_vbi_ioctl(struct file *file,
1279 unsigned int cmd, unsigned long arg)
1280 {
1281 return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1282 }
1283
1284
1285 //
1286 // Video registration stuff
1287 //
1288
1289 // Video template
1290 static const struct v4l2_file_operations usbvision_fops = {
1291 .owner = THIS_MODULE,
1292 .open = usbvision_v4l2_open,
1293 .release = usbvision_v4l2_close,
1294 .read = usbvision_v4l2_read,
1295 .mmap = usbvision_v4l2_mmap,
1296 .ioctl = video_ioctl2,
1297 /* .poll = video_poll, */
1298 };
1299
1300 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1301 .vidioc_querycap = vidioc_querycap,
1302 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1303 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1304 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1305 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1306 .vidioc_reqbufs = vidioc_reqbufs,
1307 .vidioc_querybuf = vidioc_querybuf,
1308 .vidioc_qbuf = vidioc_qbuf,
1309 .vidioc_dqbuf = vidioc_dqbuf,
1310 .vidioc_s_std = vidioc_s_std,
1311 .vidioc_enum_input = vidioc_enum_input,
1312 .vidioc_g_input = vidioc_g_input,
1313 .vidioc_s_input = vidioc_s_input,
1314 .vidioc_queryctrl = vidioc_queryctrl,
1315 .vidioc_g_audio = vidioc_g_audio,
1316 .vidioc_s_audio = vidioc_s_audio,
1317 .vidioc_g_ctrl = vidioc_g_ctrl,
1318 .vidioc_s_ctrl = vidioc_s_ctrl,
1319 .vidioc_streamon = vidioc_streamon,
1320 .vidioc_streamoff = vidioc_streamoff,
1321 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1322 /* .vidiocgmbuf = vidiocgmbuf, */
1323 #endif
1324 .vidioc_g_tuner = vidioc_g_tuner,
1325 .vidioc_s_tuner = vidioc_s_tuner,
1326 .vidioc_g_frequency = vidioc_g_frequency,
1327 .vidioc_s_frequency = vidioc_s_frequency,
1328 #ifdef CONFIG_VIDEO_ADV_DEBUG
1329 .vidioc_g_register = vidioc_g_register,
1330 .vidioc_s_register = vidioc_s_register,
1331 #endif
1332 };
1333
1334 static struct video_device usbvision_video_template = {
1335 .fops = &usbvision_fops,
1336 .ioctl_ops = &usbvision_ioctl_ops,
1337 .name = "usbvision-video",
1338 .release = video_device_release,
1339 .minor = -1,
1340 .tvnorms = USBVISION_NORMS,
1341 .current_norm = V4L2_STD_PAL
1342 };
1343
1344
1345 // Radio template
1346 static const struct v4l2_file_operations usbvision_radio_fops = {
1347 .owner = THIS_MODULE,
1348 .open = usbvision_radio_open,
1349 .release = usbvision_radio_close,
1350 .ioctl = video_ioctl2,
1351 };
1352
1353 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1354 .vidioc_querycap = vidioc_querycap,
1355 .vidioc_enum_input = vidioc_enum_input,
1356 .vidioc_g_input = vidioc_g_input,
1357 .vidioc_s_input = vidioc_s_input,
1358 .vidioc_queryctrl = vidioc_queryctrl,
1359 .vidioc_g_audio = vidioc_g_audio,
1360 .vidioc_s_audio = vidioc_s_audio,
1361 .vidioc_g_ctrl = vidioc_g_ctrl,
1362 .vidioc_s_ctrl = vidioc_s_ctrl,
1363 .vidioc_g_tuner = vidioc_g_tuner,
1364 .vidioc_s_tuner = vidioc_s_tuner,
1365 .vidioc_g_frequency = vidioc_g_frequency,
1366 .vidioc_s_frequency = vidioc_s_frequency,
1367 };
1368
1369 static struct video_device usbvision_radio_template = {
1370 .fops = &usbvision_radio_fops,
1371 .name = "usbvision-radio",
1372 .release = video_device_release,
1373 .minor = -1,
1374 .ioctl_ops = &usbvision_radio_ioctl_ops,
1375
1376 .tvnorms = USBVISION_NORMS,
1377 .current_norm = V4L2_STD_PAL
1378 };
1379
1380 // vbi template
1381 static const struct v4l2_file_operations usbvision_vbi_fops = {
1382 .owner = THIS_MODULE,
1383 .open = usbvision_vbi_open,
1384 .release = usbvision_vbi_close,
1385 .ioctl = usbvision_vbi_ioctl,
1386 };
1387
1388 static struct video_device usbvision_vbi_template=
1389 {
1390 .fops = &usbvision_vbi_fops,
1391 .release = video_device_release,
1392 .name = "usbvision-vbi",
1393 .minor = -1,
1394 };
1395
1396
1397 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1398 struct video_device *vdev_template,
1399 char *name)
1400 {
1401 struct usb_device *usb_dev = usbvision->dev;
1402 struct video_device *vdev;
1403
1404 if (usb_dev == NULL) {
1405 dev_err(&usbvision->dev->dev,
1406 "%s: usbvision->dev is not set\n", __func__);
1407 return NULL;
1408 }
1409
1410 vdev = video_device_alloc();
1411 if (NULL == vdev) {
1412 return NULL;
1413 }
1414 *vdev = *vdev_template;
1415 // vdev->minor = -1;
1416 vdev->v4l2_dev = &usbvision->v4l2_dev;
1417 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1418 video_set_drvdata(vdev, usbvision);
1419 return vdev;
1420 }
1421
1422 // unregister video4linux devices
1423 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1424 {
1425 // vbi Device:
1426 if (usbvision->vbi) {
1427 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1428 usbvision->vbi->num);
1429 if (usbvision->vbi->minor != -1) {
1430 video_unregister_device(usbvision->vbi);
1431 } else {
1432 video_device_release(usbvision->vbi);
1433 }
1434 usbvision->vbi = NULL;
1435 }
1436
1437 // Radio Device:
1438 if (usbvision->rdev) {
1439 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1440 usbvision->rdev->num);
1441 if (usbvision->rdev->minor != -1) {
1442 video_unregister_device(usbvision->rdev);
1443 } else {
1444 video_device_release(usbvision->rdev);
1445 }
1446 usbvision->rdev = NULL;
1447 }
1448
1449 // Video Device:
1450 if (usbvision->vdev) {
1451 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1452 usbvision->vdev->num);
1453 if (usbvision->vdev->minor != -1) {
1454 video_unregister_device(usbvision->vdev);
1455 } else {
1456 video_device_release(usbvision->vdev);
1457 }
1458 usbvision->vdev = NULL;
1459 }
1460 }
1461
1462 // register video4linux devices
1463 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1464 {
1465 // Video Device:
1466 usbvision->vdev = usbvision_vdev_init(usbvision,
1467 &usbvision_video_template,
1468 "USBVision Video");
1469 if (usbvision->vdev == NULL) {
1470 goto err_exit;
1471 }
1472 if (video_register_device(usbvision->vdev,
1473 VFL_TYPE_GRABBER,
1474 video_nr)<0) {
1475 goto err_exit;
1476 }
1477 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1478 usbvision->nr, usbvision->vdev->num);
1479
1480 // Radio Device:
1481 if (usbvision_device_data[usbvision->DevModel].Radio) {
1482 // usbvision has radio
1483 usbvision->rdev = usbvision_vdev_init(usbvision,
1484 &usbvision_radio_template,
1485 "USBVision Radio");
1486 if (usbvision->rdev == NULL) {
1487 goto err_exit;
1488 }
1489 if (video_register_device(usbvision->rdev,
1490 VFL_TYPE_RADIO,
1491 radio_nr)<0) {
1492 goto err_exit;
1493 }
1494 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1495 usbvision->nr, usbvision->rdev->num);
1496 }
1497 // vbi Device:
1498 if (usbvision_device_data[usbvision->DevModel].vbi) {
1499 usbvision->vbi = usbvision_vdev_init(usbvision,
1500 &usbvision_vbi_template,
1501 "USBVision VBI");
1502 if (usbvision->vdev == NULL) {
1503 goto err_exit;
1504 }
1505 if (video_register_device(usbvision->vbi,
1506 VFL_TYPE_VBI,
1507 vbi_nr)<0) {
1508 goto err_exit;
1509 }
1510 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1511 usbvision->nr, usbvision->vbi->num);
1512 }
1513 // all done
1514 return 0;
1515
1516 err_exit:
1517 dev_err(&usbvision->dev->dev,
1518 "USBVision[%d]: video_register_device() failed\n",
1519 usbvision->nr);
1520 usbvision_unregister_video(usbvision);
1521 return -1;
1522 }
1523
1524 /*
1525 * usbvision_alloc()
1526 *
1527 * This code allocates the struct usb_usbvision.
1528 * It is filled with default values.
1529 *
1530 * Returns NULL on error, a pointer to usb_usbvision else.
1531 *
1532 */
1533 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1534 {
1535 struct usb_usbvision *usbvision;
1536
1537 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1538 if (usbvision == NULL)
1539 return NULL;
1540
1541 usbvision->dev = dev;
1542 if (v4l2_device_register(&dev->dev, &usbvision->v4l2_dev))
1543 goto err_free;
1544
1545 mutex_init(&usbvision->lock); /* available */
1546
1547 // prepare control urb for control messages during interrupts
1548 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1549 if (usbvision->ctrlUrb == NULL)
1550 goto err_unreg;
1551 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1552
1553 usbvision_init_powerOffTimer(usbvision);
1554
1555 return usbvision;
1556
1557 err_unreg:
1558 v4l2_device_unregister(&usbvision->v4l2_dev);
1559 err_free:
1560 kfree(usbvision);
1561 return NULL;
1562 }
1563
1564 /*
1565 * usbvision_release()
1566 *
1567 * This code does final release of struct usb_usbvision. This happens
1568 * after the device is disconnected -and- all clients closed their files.
1569 *
1570 */
1571 static void usbvision_release(struct usb_usbvision *usbvision)
1572 {
1573 PDEBUG(DBG_PROBE, "");
1574
1575 mutex_lock(&usbvision->lock);
1576
1577 usbvision_reset_powerOffTimer(usbvision);
1578
1579 usbvision->initialized = 0;
1580
1581 mutex_unlock(&usbvision->lock);
1582
1583 usbvision_remove_sysfs(usbvision->vdev);
1584 usbvision_unregister_video(usbvision);
1585
1586 if (usbvision->ctrlUrb) {
1587 usb_free_urb(usbvision->ctrlUrb);
1588 }
1589
1590 v4l2_device_unregister(&usbvision->v4l2_dev);
1591 kfree(usbvision);
1592
1593 PDEBUG(DBG_PROBE, "success");
1594 }
1595
1596
1597 /*********************** usb interface **********************************/
1598
1599 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1600 {
1601 int model;
1602
1603 if (usbvision == NULL)
1604 return;
1605
1606 model = usbvision->DevModel;
1607 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1608
1609 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1610 usbvision->Vin_Reg2_Preset =
1611 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1612 } else {
1613 usbvision->Vin_Reg2_Preset = 0;
1614 }
1615
1616 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1617
1618 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1619 usbvision->ctl_input = 0;
1620
1621 /* This should be here to make i2c clients to be able to register */
1622 /* first switch off audio */
1623 usbvision_audio_off(usbvision);
1624 if (!PowerOnAtOpen) {
1625 /* and then power up the noisy tuner */
1626 usbvision_power_on(usbvision);
1627 usbvision_i2c_register(usbvision);
1628 }
1629 }
1630
1631 /*
1632 * usbvision_probe()
1633 *
1634 * This procedure queries device descriptor and accepts the interface
1635 * if it looks like USBVISION video device
1636 *
1637 */
1638 static int __devinit usbvision_probe(struct usb_interface *intf,
1639 const struct usb_device_id *devid)
1640 {
1641 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1642 struct usb_interface *uif;
1643 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1644 const struct usb_host_interface *interface;
1645 struct usb_usbvision *usbvision = NULL;
1646 const struct usb_endpoint_descriptor *endpoint;
1647 int model,i;
1648
1649 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1650 dev->descriptor.idVendor,
1651 dev->descriptor.idProduct, ifnum);
1652
1653 model = devid->driver_info;
1654 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1655 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1656 return -ENODEV;
1657 }
1658 printk(KERN_INFO "%s: %s found\n", __func__,
1659 usbvision_device_data[model].ModelString);
1660
1661 if (usbvision_device_data[model].Interface >= 0) {
1662 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1663 } else {
1664 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1665 }
1666 endpoint = &interface->endpoint[1].desc;
1667 if (!usb_endpoint_xfer_isoc(endpoint)) {
1668 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1669 __func__, ifnum);
1670 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1671 __func__, endpoint->bmAttributes);
1672 return -ENODEV;
1673 }
1674 if (usb_endpoint_dir_out(endpoint)) {
1675 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1676 __func__, ifnum);
1677 return -ENODEV;
1678 }
1679
1680 if ((usbvision = usbvision_alloc(dev)) == NULL) {
1681 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1682 return -ENOMEM;
1683 }
1684
1685 if (dev->descriptor.bNumConfigurations > 1) {
1686 usbvision->bridgeType = BRIDGE_NT1004;
1687 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1688 usbvision->bridgeType = BRIDGE_NT1005;
1689 } else {
1690 usbvision->bridgeType = BRIDGE_NT1003;
1691 }
1692 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1693
1694 mutex_lock(&usbvision->lock);
1695
1696 /* compute alternate max packet sizes */
1697 uif = dev->actconfig->interface[0];
1698
1699 usbvision->num_alt=uif->num_altsetting;
1700 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1701 usbvision->alt_max_pkt_size = kmalloc(32*
1702 usbvision->num_alt,GFP_KERNEL);
1703 if (usbvision->alt_max_pkt_size == NULL) {
1704 dev_err(&intf->dev, "usbvision: out of memory!\n");
1705 mutex_unlock(&usbvision->lock);
1706 return -ENOMEM;
1707 }
1708
1709 for (i = 0; i < usbvision->num_alt ; i++) {
1710 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1711 wMaxPacketSize);
1712 usbvision->alt_max_pkt_size[i] =
1713 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1714 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1715 usbvision->alt_max_pkt_size[i]);
1716 }
1717
1718
1719 usbvision->nr = usbvision_nr++;
1720
1721 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1722 if (usbvision->have_tuner) {
1723 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1724 }
1725
1726 usbvision->DevModel = model;
1727 usbvision->remove_pending = 0;
1728 usbvision->iface = ifnum;
1729 usbvision->ifaceAlt = 0;
1730 usbvision->video_endp = endpoint->bEndpointAddress;
1731 usbvision->isocPacketSize = 0;
1732 usbvision->usb_bandwidth = 0;
1733 usbvision->user = 0;
1734 usbvision->streaming = Stream_Off;
1735 usbvision_register_video(usbvision);
1736 usbvision_configure_video(usbvision);
1737 mutex_unlock(&usbvision->lock);
1738
1739
1740 usb_set_intfdata (intf, usbvision);
1741 usbvision_create_sysfs(usbvision->vdev);
1742
1743 PDEBUG(DBG_PROBE, "success");
1744 return 0;
1745 }
1746
1747
1748 /*
1749 * usbvision_disconnect()
1750 *
1751 * This procedure stops all driver activity, deallocates interface-private
1752 * structure (pointed by 'ptr') and after that driver should be removable
1753 * with no ill consequences.
1754 *
1755 */
1756 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1757 {
1758 struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1759
1760 PDEBUG(DBG_PROBE, "");
1761
1762 if (usbvision == NULL) {
1763 dev_err(&usbvision->dev->dev,
1764 "%s: usb_get_intfdata() failed\n", __func__);
1765 return;
1766 }
1767 usb_set_intfdata (intf, NULL);
1768
1769 mutex_lock(&usbvision->lock);
1770
1771 // At this time we ask to cancel outstanding URBs
1772 usbvision_stop_isoc(usbvision);
1773
1774 v4l2_device_disconnect(&usbvision->v4l2_dev);
1775
1776 if (usbvision->power) {
1777 usbvision_i2c_unregister(usbvision);
1778 usbvision_power_off(usbvision);
1779 }
1780 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1781
1782 usb_put_dev(usbvision->dev);
1783 usbvision->dev = NULL; // USB device is no more
1784
1785 mutex_unlock(&usbvision->lock);
1786
1787 if (usbvision->user) {
1788 printk(KERN_INFO "%s: In use, disconnect pending\n",
1789 __func__);
1790 wake_up_interruptible(&usbvision->wait_frame);
1791 wake_up_interruptible(&usbvision->wait_stream);
1792 } else {
1793 usbvision_release(usbvision);
1794 }
1795
1796 PDEBUG(DBG_PROBE, "success");
1797 }
1798
1799 static struct usb_driver usbvision_driver = {
1800 .name = "usbvision",
1801 .id_table = usbvision_table,
1802 .probe = usbvision_probe,
1803 .disconnect = usbvision_disconnect
1804 };
1805
1806 /*
1807 * usbvision_init()
1808 *
1809 * This code is run to initialize the driver.
1810 *
1811 */
1812 static int __init usbvision_init(void)
1813 {
1814 int errCode;
1815
1816 PDEBUG(DBG_PROBE, "");
1817
1818 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1819 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1820 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1821
1822 /* disable planar mode support unless compression enabled */
1823 if (isocMode != ISOC_MODE_COMPRESS ) {
1824 // FIXME : not the right way to set supported flag
1825 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1826 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1827 }
1828
1829 errCode = usb_register(&usbvision_driver);
1830
1831 if (errCode == 0) {
1832 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1833 PDEBUG(DBG_PROBE, "success");
1834 }
1835 return errCode;
1836 }
1837
1838 static void __exit usbvision_exit(void)
1839 {
1840 PDEBUG(DBG_PROBE, "");
1841
1842 usb_deregister(&usbvision_driver);
1843 PDEBUG(DBG_PROBE, "success");
1844 }
1845
1846 module_init(usbvision_init);
1847 module_exit(usbvision_exit);
1848
1849 /*
1850 * Overrides for Emacs so that we follow Linus's tabbing style.
1851 * ---------------------------------------------------------------------------
1852 * Local variables:
1853 * c-basic-offset: 8
1854 * End:
1855 */
Linux kernel - Deliverables
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