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[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/video_decoder.h>
63 #include <linux/i2c.h>
64
65 #include <media/saa7115.h>
66 #include <media/v4l2-common.h>
67 #include <media/v4l2-ioctl.h>
68 #include <media/tuner.h>
69
70 #include <linux/workqueue.h>
71
72 #include "usbvision.h"
73 #include "usbvision-cards.h"
74
75 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
76 Dwaine Garden <DwaineGarden@rogers.com>"
77 #define DRIVER_NAME "usbvision"
78 #define DRIVER_ALIAS "USBVision"
79 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
80 #define DRIVER_LICENSE "GPL"
81 #define USBVISION_DRIVER_VERSION_MAJOR 0
82 #define USBVISION_DRIVER_VERSION_MINOR 9
83 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
84 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
85 USBVISION_DRIVER_VERSION_MINOR,\
86 USBVISION_DRIVER_VERSION_PATCHLEVEL)
87 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
88 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
89 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
90
91 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
92
93
94 #ifdef USBVISION_DEBUG
95 #define PDEBUG(level, fmt, args...) { \
96 if (video_debug & (level)) \
97 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
98 __func__, __LINE__ , ## args); \
99 }
100 #else
101 #define PDEBUG(level, fmt, args...) do {} while(0)
102 #endif
103
104 #define DBG_IO 1<<1
105 #define DBG_PROBE 1<<2
106 #define DBG_MMAP 1<<3
107
108 //String operations
109 #define rmspace(str) while(*str==' ') str++;
110 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
111
112
113 /* sequential number of usbvision device */
114 static int usbvision_nr;
115
116 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
117 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
118 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
119 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
120 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
121 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
122 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
123 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
124 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
125 };
126
127 /* Function prototypes */
128 static void usbvision_release(struct usb_usbvision *usbvision);
129
130 /* Default initialization of device driver parameters */
131 /* Set the default format for ISOC endpoint */
132 static int isocMode = ISOC_MODE_COMPRESS;
133 /* Set the default Debug Mode of the device driver */
134 static int video_debug;
135 /* Set the default device to power on at startup */
136 static int PowerOnAtOpen = 1;
137 /* Sequential Number of Video Device */
138 static int video_nr = -1;
139 /* Sequential Number of Radio Device */
140 static int radio_nr = -1;
141 /* Sequential Number of VBI Device */
142 static int vbi_nr = -1;
143
144 /* Grab parameters for the device driver */
145
146 /* Showing parameters under SYSFS */
147 module_param(isocMode, int, 0444);
148 module_param(video_debug, int, 0444);
149 module_param(PowerOnAtOpen, int, 0444);
150 module_param(video_nr, int, 0444);
151 module_param(radio_nr, int, 0444);
152 module_param(vbi_nr, int, 0444);
153
154 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
155 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
156 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
157 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
158 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
159 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)");
160
161
162 // Misc stuff
163 MODULE_AUTHOR(DRIVER_AUTHOR);
164 MODULE_DESCRIPTION(DRIVER_DESC);
165 MODULE_LICENSE(DRIVER_LICENSE);
166 MODULE_VERSION(USBVISION_VERSION_STRING);
167 MODULE_ALIAS(DRIVER_ALIAS);
168
169
170 /*****************************************************************************/
171 /* SYSFS Code - Copied from the stv680.c usb module. */
172 /* Device information is located at /sys/class/video4linux/video0 */
173 /* Device parameters information is located at /sys/module/usbvision */
174 /* Device USB Information is located at */
175 /* /sys/bus/usb/drivers/USBVision Video Grabber */
176 /*****************************************************************************/
177
178 #define YES_NO(x) ((x) ? "Yes" : "No")
179
180 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
181 {
182 struct video_device *vdev =
183 container_of(cd, struct video_device, dev);
184 return video_get_drvdata(vdev);
185 }
186
187 static ssize_t show_version(struct device *cd,
188 struct device_attribute *attr, char *buf)
189 {
190 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
191 }
192 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
193
194 static ssize_t show_model(struct device *cd,
195 struct device_attribute *attr, char *buf)
196 {
197 struct video_device *vdev =
198 container_of(cd, struct video_device, dev);
199 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
200 return sprintf(buf, "%s\n",
201 usbvision_device_data[usbvision->DevModel].ModelString);
202 }
203 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
204
205 static ssize_t show_hue(struct device *cd,
206 struct device_attribute *attr, char *buf)
207 {
208 struct video_device *vdev =
209 container_of(cd, struct video_device, dev);
210 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
211 struct v4l2_control ctrl;
212 ctrl.id = V4L2_CID_HUE;
213 ctrl.value = 0;
214 if(usbvision->user)
215 call_all(usbvision, core, g_ctrl, &ctrl);
216 return sprintf(buf, "%d\n", ctrl.value);
217 }
218 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
219
220 static ssize_t show_contrast(struct device *cd,
221 struct device_attribute *attr, char *buf)
222 {
223 struct video_device *vdev =
224 container_of(cd, struct video_device, dev);
225 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
226 struct v4l2_control ctrl;
227 ctrl.id = V4L2_CID_CONTRAST;
228 ctrl.value = 0;
229 if(usbvision->user)
230 call_all(usbvision, core, g_ctrl, &ctrl);
231 return sprintf(buf, "%d\n", ctrl.value);
232 }
233 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
234
235 static ssize_t show_brightness(struct device *cd,
236 struct device_attribute *attr, char *buf)
237 {
238 struct video_device *vdev =
239 container_of(cd, struct video_device, dev);
240 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
241 struct v4l2_control ctrl;
242 ctrl.id = V4L2_CID_BRIGHTNESS;
243 ctrl.value = 0;
244 if(usbvision->user)
245 call_all(usbvision, core, g_ctrl, &ctrl);
246 return sprintf(buf, "%d\n", ctrl.value);
247 }
248 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
249
250 static ssize_t show_saturation(struct device *cd,
251 struct device_attribute *attr, char *buf)
252 {
253 struct video_device *vdev =
254 container_of(cd, struct video_device, dev);
255 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
256 struct v4l2_control ctrl;
257 ctrl.id = V4L2_CID_SATURATION;
258 ctrl.value = 0;
259 if(usbvision->user)
260 call_all(usbvision, core, g_ctrl, &ctrl);
261 return sprintf(buf, "%d\n", ctrl.value);
262 }
263 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
264
265 static ssize_t show_streaming(struct device *cd,
266 struct device_attribute *attr, char *buf)
267 {
268 struct video_device *vdev =
269 container_of(cd, struct video_device, dev);
270 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
271 return sprintf(buf, "%s\n",
272 YES_NO(usbvision->streaming==Stream_On?1:0));
273 }
274 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
275
276 static ssize_t show_compression(struct device *cd,
277 struct device_attribute *attr, char *buf)
278 {
279 struct video_device *vdev =
280 container_of(cd, struct video_device, dev);
281 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
282 return sprintf(buf, "%s\n",
283 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
284 }
285 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
286
287 static ssize_t show_device_bridge(struct device *cd,
288 struct device_attribute *attr, char *buf)
289 {
290 struct video_device *vdev =
291 container_of(cd, struct video_device, dev);
292 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
293 return sprintf(buf, "%d\n", usbvision->bridgeType);
294 }
295 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
296
297 static void usbvision_create_sysfs(struct video_device *vdev)
298 {
299 int res;
300 if (!vdev)
301 return;
302 do {
303 res = device_create_file(&vdev->dev, &dev_attr_version);
304 if (res<0)
305 break;
306 res = device_create_file(&vdev->dev, &dev_attr_model);
307 if (res<0)
308 break;
309 res = device_create_file(&vdev->dev, &dev_attr_hue);
310 if (res<0)
311 break;
312 res = device_create_file(&vdev->dev, &dev_attr_contrast);
313 if (res<0)
314 break;
315 res = device_create_file(&vdev->dev, &dev_attr_brightness);
316 if (res<0)
317 break;
318 res = device_create_file(&vdev->dev, &dev_attr_saturation);
319 if (res<0)
320 break;
321 res = device_create_file(&vdev->dev, &dev_attr_streaming);
322 if (res<0)
323 break;
324 res = device_create_file(&vdev->dev, &dev_attr_compression);
325 if (res<0)
326 break;
327 res = device_create_file(&vdev->dev, &dev_attr_bridge);
328 if (res>=0)
329 return;
330 } while (0);
331
332 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
333 }
334
335 static void usbvision_remove_sysfs(struct video_device *vdev)
336 {
337 if (vdev) {
338 device_remove_file(&vdev->dev, &dev_attr_version);
339 device_remove_file(&vdev->dev, &dev_attr_model);
340 device_remove_file(&vdev->dev, &dev_attr_hue);
341 device_remove_file(&vdev->dev, &dev_attr_contrast);
342 device_remove_file(&vdev->dev, &dev_attr_brightness);
343 device_remove_file(&vdev->dev, &dev_attr_saturation);
344 device_remove_file(&vdev->dev, &dev_attr_streaming);
345 device_remove_file(&vdev->dev, &dev_attr_compression);
346 device_remove_file(&vdev->dev, &dev_attr_bridge);
347 }
348 }
349
350 /*
351 * usbvision_open()
352 *
353 * This is part of Video 4 Linux API. The driver can be opened by one
354 * client only (checks internal counter 'usbvision->user'). The procedure
355 * then allocates buffers needed for video processing.
356 *
357 */
358 static int usbvision_v4l2_open(struct file *file)
359 {
360 struct usb_usbvision *usbvision = video_drvdata(file);
361 int errCode = 0;
362
363 PDEBUG(DBG_IO, "open");
364
365 lock_kernel();
366 usbvision_reset_powerOffTimer(usbvision);
367
368 if (usbvision->user)
369 errCode = -EBUSY;
370 else {
371 /* Allocate memory for the scratch ring buffer */
372 errCode = usbvision_scratch_alloc(usbvision);
373 if (isocMode==ISOC_MODE_COMPRESS) {
374 /* Allocate intermediate decompression buffers
375 only if needed */
376 errCode = usbvision_decompress_alloc(usbvision);
377 }
378 if (errCode) {
379 /* Deallocate all buffers if trouble */
380 usbvision_scratch_free(usbvision);
381 usbvision_decompress_free(usbvision);
382 }
383 }
384
385 /* If so far no errors then we shall start the camera */
386 if (!errCode) {
387 mutex_lock(&usbvision->lock);
388 if (usbvision->power == 0) {
389 usbvision_power_on(usbvision);
390 usbvision_i2c_register(usbvision);
391 }
392
393 /* Send init sequence only once, it's large! */
394 if (!usbvision->initialized) {
395 int setup_ok = 0;
396 setup_ok = usbvision_setup(usbvision,isocMode);
397 if (setup_ok)
398 usbvision->initialized = 1;
399 else
400 errCode = -EBUSY;
401 }
402
403 if (!errCode) {
404 usbvision_begin_streaming(usbvision);
405 errCode = usbvision_init_isoc(usbvision);
406 /* device must be initialized before isoc transfer */
407 usbvision_muxsel(usbvision,0);
408 usbvision->user++;
409 } else {
410 if (PowerOnAtOpen) {
411 usbvision_i2c_unregister(usbvision);
412 usbvision_power_off(usbvision);
413 usbvision->initialized = 0;
414 }
415 }
416 mutex_unlock(&usbvision->lock);
417 }
418
419 /* prepare queues */
420 usbvision_empty_framequeues(usbvision);
421
422 PDEBUG(DBG_IO, "success");
423 unlock_kernel();
424 return errCode;
425 }
426
427 /*
428 * usbvision_v4l2_close()
429 *
430 * This is part of Video 4 Linux API. The procedure
431 * stops streaming and deallocates all buffers that were earlier
432 * allocated in usbvision_v4l2_open().
433 *
434 */
435 static int usbvision_v4l2_close(struct file *file)
436 {
437 struct usb_usbvision *usbvision = video_drvdata(file);
438
439 PDEBUG(DBG_IO, "close");
440 mutex_lock(&usbvision->lock);
441
442 usbvision_audio_off(usbvision);
443 usbvision_restart_isoc(usbvision);
444 usbvision_stop_isoc(usbvision);
445
446 usbvision_decompress_free(usbvision);
447 usbvision_frames_free(usbvision);
448 usbvision_empty_framequeues(usbvision);
449 usbvision_scratch_free(usbvision);
450
451 usbvision->user--;
452
453 if (PowerOnAtOpen) {
454 /* power off in a little while
455 to avoid off/on every close/open short sequences */
456 usbvision_set_powerOffTimer(usbvision);
457 usbvision->initialized = 0;
458 }
459
460 mutex_unlock(&usbvision->lock);
461
462 if (usbvision->remove_pending) {
463 printk(KERN_INFO "%s: Final disconnect\n", __func__);
464 usbvision_release(usbvision);
465 }
466
467 PDEBUG(DBG_IO, "success");
468 return 0;
469 }
470
471
472 /*
473 * usbvision_ioctl()
474 *
475 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
476 *
477 */
478 #ifdef CONFIG_VIDEO_ADV_DEBUG
479 static int vidioc_g_register (struct file *file, void *priv,
480 struct v4l2_dbg_register *reg)
481 {
482 struct usb_usbvision *usbvision = video_drvdata(file);
483 int errCode;
484
485 if (!v4l2_chip_match_host(&reg->match))
486 return -EINVAL;
487 /* NT100x has a 8-bit register space */
488 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
489 if (errCode < 0) {
490 dev_err(&usbvision->vdev->dev,
491 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
492 __func__, errCode);
493 return errCode;
494 }
495 reg->val = errCode;
496 reg->size = 1;
497 return 0;
498 }
499
500 static int vidioc_s_register (struct file *file, void *priv,
501 struct v4l2_dbg_register *reg)
502 {
503 struct usb_usbvision *usbvision = video_drvdata(file);
504 int errCode;
505
506 if (!v4l2_chip_match_host(&reg->match))
507 return -EINVAL;
508 /* NT100x has a 8-bit register space */
509 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
510 if (errCode < 0) {
511 dev_err(&usbvision->vdev->dev,
512 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
513 __func__, errCode);
514 return errCode;
515 }
516 return 0;
517 }
518 #endif
519
520 static int vidioc_querycap (struct file *file, void *priv,
521 struct v4l2_capability *vc)
522 {
523 struct usb_usbvision *usbvision = video_drvdata(file);
524
525 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
526 strlcpy(vc->card,
527 usbvision_device_data[usbvision->DevModel].ModelString,
528 sizeof(vc->card));
529 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
530 vc->version = USBVISION_DRIVER_VERSION;
531 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
532 V4L2_CAP_AUDIO |
533 V4L2_CAP_READWRITE |
534 V4L2_CAP_STREAMING |
535 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
536 return 0;
537 }
538
539 static int vidioc_enum_input (struct file *file, void *priv,
540 struct v4l2_input *vi)
541 {
542 struct usb_usbvision *usbvision = video_drvdata(file);
543 int chan;
544
545 if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
546 return -EINVAL;
547 if (usbvision->have_tuner) {
548 chan = vi->index;
549 } else {
550 chan = vi->index + 1; /*skip Television string*/
551 }
552 /* Determine the requested input characteristics
553 specific for each usbvision card model */
554 switch(chan) {
555 case 0:
556 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
557 strcpy(vi->name, "White Video Input");
558 } else {
559 strcpy(vi->name, "Television");
560 vi->type = V4L2_INPUT_TYPE_TUNER;
561 vi->audioset = 1;
562 vi->tuner = chan;
563 vi->std = USBVISION_NORMS;
564 }
565 break;
566 case 1:
567 vi->type = V4L2_INPUT_TYPE_CAMERA;
568 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
569 strcpy(vi->name, "Green Video Input");
570 } else {
571 strcpy(vi->name, "Composite Video Input");
572 }
573 vi->std = V4L2_STD_PAL;
574 break;
575 case 2:
576 vi->type = V4L2_INPUT_TYPE_CAMERA;
577 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
578 strcpy(vi->name, "Yellow Video Input");
579 } else {
580 strcpy(vi->name, "S-Video Input");
581 }
582 vi->std = V4L2_STD_PAL;
583 break;
584 case 3:
585 vi->type = V4L2_INPUT_TYPE_CAMERA;
586 strcpy(vi->name, "Red Video Input");
587 vi->std = V4L2_STD_PAL;
588 break;
589 }
590 return 0;
591 }
592
593 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
594 {
595 struct usb_usbvision *usbvision = video_drvdata(file);
596
597 *input = usbvision->ctl_input;
598 return 0;
599 }
600
601 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
602 {
603 struct usb_usbvision *usbvision = video_drvdata(file);
604
605 if ((input >= usbvision->video_inputs) || (input < 0) )
606 return -EINVAL;
607
608 mutex_lock(&usbvision->lock);
609 usbvision_muxsel(usbvision, input);
610 usbvision_set_input(usbvision);
611 usbvision_set_output(usbvision,
612 usbvision->curwidth,
613 usbvision->curheight);
614 mutex_unlock(&usbvision->lock);
615 return 0;
616 }
617
618 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
619 {
620 struct usb_usbvision *usbvision = video_drvdata(file);
621
622 usbvision->tvnormId=*id;
623
624 mutex_lock(&usbvision->lock);
625 call_all(usbvision, tuner, s_std, usbvision->tvnormId);
626 mutex_unlock(&usbvision->lock);
627 /* propagate the change to the decoder */
628 usbvision_muxsel(usbvision, usbvision->ctl_input);
629
630 return 0;
631 }
632
633 static int vidioc_g_tuner (struct file *file, void *priv,
634 struct v4l2_tuner *vt)
635 {
636 struct usb_usbvision *usbvision = video_drvdata(file);
637
638 if (!usbvision->have_tuner || vt->index) // Only tuner 0
639 return -EINVAL;
640 if(usbvision->radio) {
641 strcpy(vt->name, "Radio");
642 vt->type = V4L2_TUNER_RADIO;
643 } else {
644 strcpy(vt->name, "Television");
645 }
646 /* Let clients fill in the remainder of this struct */
647 call_all(usbvision, tuner, g_tuner, vt);
648
649 return 0;
650 }
651
652 static int vidioc_s_tuner (struct file *file, void *priv,
653 struct v4l2_tuner *vt)
654 {
655 struct usb_usbvision *usbvision = video_drvdata(file);
656
657 // Only no or one tuner for now
658 if (!usbvision->have_tuner || vt->index)
659 return -EINVAL;
660 /* let clients handle this */
661 call_all(usbvision, tuner, s_tuner, vt);
662
663 return 0;
664 }
665
666 static int vidioc_g_frequency (struct file *file, void *priv,
667 struct v4l2_frequency *freq)
668 {
669 struct usb_usbvision *usbvision = video_drvdata(file);
670
671 freq->tuner = 0; // Only one tuner
672 if(usbvision->radio) {
673 freq->type = V4L2_TUNER_RADIO;
674 } else {
675 freq->type = V4L2_TUNER_ANALOG_TV;
676 }
677 freq->frequency = usbvision->freq;
678
679 return 0;
680 }
681
682 static int vidioc_s_frequency (struct file *file, void *priv,
683 struct v4l2_frequency *freq)
684 {
685 struct usb_usbvision *usbvision = video_drvdata(file);
686
687 // Only no or one tuner for now
688 if (!usbvision->have_tuner || freq->tuner)
689 return -EINVAL;
690
691 usbvision->freq = freq->frequency;
692 call_all(usbvision, tuner, s_frequency, freq);
693
694 return 0;
695 }
696
697 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
698 {
699 struct usb_usbvision *usbvision = video_drvdata(file);
700
701 memset(a,0,sizeof(*a));
702 if(usbvision->radio) {
703 strcpy(a->name,"Radio");
704 } else {
705 strcpy(a->name, "TV");
706 }
707
708 return 0;
709 }
710
711 static int vidioc_s_audio (struct file *file, void *fh,
712 struct v4l2_audio *a)
713 {
714 if(a->index) {
715 return -EINVAL;
716 }
717
718 return 0;
719 }
720
721 static int vidioc_queryctrl (struct file *file, void *priv,
722 struct v4l2_queryctrl *ctrl)
723 {
724 struct usb_usbvision *usbvision = video_drvdata(file);
725 int id=ctrl->id;
726
727 memset(ctrl,0,sizeof(*ctrl));
728 ctrl->id=id;
729
730 call_all(usbvision, core, queryctrl, ctrl);
731
732 if (!ctrl->type)
733 return -EINVAL;
734
735 return 0;
736 }
737
738 static int vidioc_g_ctrl (struct file *file, void *priv,
739 struct v4l2_control *ctrl)
740 {
741 struct usb_usbvision *usbvision = video_drvdata(file);
742 call_all(usbvision, core, g_ctrl, ctrl);
743
744 return 0;
745 }
746
747 static int vidioc_s_ctrl (struct file *file, void *priv,
748 struct v4l2_control *ctrl)
749 {
750 struct usb_usbvision *usbvision = video_drvdata(file);
751 call_all(usbvision, core, s_ctrl, ctrl);
752
753 return 0;
754 }
755
756 static int vidioc_reqbufs (struct file *file,
757 void *priv, struct v4l2_requestbuffers *vr)
758 {
759 struct usb_usbvision *usbvision = video_drvdata(file);
760 int ret;
761
762 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
763
764 /* Check input validity:
765 the user must do a VIDEO CAPTURE and MMAP method. */
766 if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
767 (vr->memory != V4L2_MEMORY_MMAP))
768 return -EINVAL;
769
770 if(usbvision->streaming == Stream_On) {
771 if ((ret = usbvision_stream_interrupt(usbvision)))
772 return ret;
773 }
774
775 usbvision_frames_free(usbvision);
776 usbvision_empty_framequeues(usbvision);
777 vr->count = usbvision_frames_alloc(usbvision,vr->count);
778
779 usbvision->curFrame = NULL;
780
781 return 0;
782 }
783
784 static int vidioc_querybuf (struct file *file,
785 void *priv, struct v4l2_buffer *vb)
786 {
787 struct usb_usbvision *usbvision = video_drvdata(file);
788 struct usbvision_frame *frame;
789
790 /* FIXME : must control
791 that buffers are mapped (VIDIOC_REQBUFS has been called) */
792 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
793 return -EINVAL;
794 }
795 if(vb->index>=usbvision->num_frames) {
796 return -EINVAL;
797 }
798 /* Updating the corresponding frame state */
799 vb->flags = 0;
800 frame = &usbvision->frame[vb->index];
801 if(frame->grabstate >= FrameState_Ready)
802 vb->flags |= V4L2_BUF_FLAG_QUEUED;
803 if(frame->grabstate >= FrameState_Done)
804 vb->flags |= V4L2_BUF_FLAG_DONE;
805 if(frame->grabstate == FrameState_Unused)
806 vb->flags |= V4L2_BUF_FLAG_MAPPED;
807 vb->memory = V4L2_MEMORY_MMAP;
808
809 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
810
811 vb->memory = V4L2_MEMORY_MMAP;
812 vb->field = V4L2_FIELD_NONE;
813 vb->length = usbvision->curwidth*
814 usbvision->curheight*
815 usbvision->palette.bytes_per_pixel;
816 vb->timestamp = usbvision->frame[vb->index].timestamp;
817 vb->sequence = usbvision->frame[vb->index].sequence;
818 return 0;
819 }
820
821 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
822 {
823 struct usb_usbvision *usbvision = video_drvdata(file);
824 struct usbvision_frame *frame;
825 unsigned long lock_flags;
826
827 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
828 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
829 return -EINVAL;
830 }
831 if(vb->index>=usbvision->num_frames) {
832 return -EINVAL;
833 }
834
835 frame = &usbvision->frame[vb->index];
836
837 if (frame->grabstate != FrameState_Unused) {
838 return -EAGAIN;
839 }
840
841 /* Mark it as ready and enqueue frame */
842 frame->grabstate = FrameState_Ready;
843 frame->scanstate = ScanState_Scanning;
844 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
845
846 vb->flags &= ~V4L2_BUF_FLAG_DONE;
847
848 /* set v4l2_format index */
849 frame->v4l2_format = usbvision->palette;
850
851 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
852 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
853 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
854
855 return 0;
856 }
857
858 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
859 {
860 struct usb_usbvision *usbvision = video_drvdata(file);
861 int ret;
862 struct usbvision_frame *f;
863 unsigned long lock_flags;
864
865 if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
866 return -EINVAL;
867
868 if (list_empty(&(usbvision->outqueue))) {
869 if (usbvision->streaming == Stream_Idle)
870 return -EINVAL;
871 ret = wait_event_interruptible
872 (usbvision->wait_frame,
873 !list_empty(&(usbvision->outqueue)));
874 if (ret)
875 return ret;
876 }
877
878 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
879 f = list_entry(usbvision->outqueue.next,
880 struct usbvision_frame, frame);
881 list_del(usbvision->outqueue.next);
882 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
883
884 f->grabstate = FrameState_Unused;
885
886 vb->memory = V4L2_MEMORY_MMAP;
887 vb->flags = V4L2_BUF_FLAG_MAPPED |
888 V4L2_BUF_FLAG_QUEUED |
889 V4L2_BUF_FLAG_DONE;
890 vb->index = f->index;
891 vb->sequence = f->sequence;
892 vb->timestamp = f->timestamp;
893 vb->field = V4L2_FIELD_NONE;
894 vb->bytesused = f->scanlength;
895
896 return 0;
897 }
898
899 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
900 {
901 struct usb_usbvision *usbvision = video_drvdata(file);
902
903 usbvision->streaming = Stream_On;
904 call_all(usbvision, video, s_stream, 1);
905
906 return 0;
907 }
908
909 static int vidioc_streamoff(struct file *file,
910 void *priv, enum v4l2_buf_type type)
911 {
912 struct usb_usbvision *usbvision = video_drvdata(file);
913
914 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
915 return -EINVAL;
916
917 if(usbvision->streaming == Stream_On) {
918 usbvision_stream_interrupt(usbvision);
919 /* Stop all video streamings */
920 call_all(usbvision, video, s_stream, 0);
921 }
922 usbvision_empty_framequeues(usbvision);
923
924 return 0;
925 }
926
927 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
928 struct v4l2_fmtdesc *vfd)
929 {
930 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
931 return -EINVAL;
932 }
933 vfd->flags = 0;
934 vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
935 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
936 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
937 memset(vfd->reserved, 0, sizeof(vfd->reserved));
938 return 0;
939 }
940
941 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
942 struct v4l2_format *vf)
943 {
944 struct usb_usbvision *usbvision = video_drvdata(file);
945 vf->fmt.pix.width = usbvision->curwidth;
946 vf->fmt.pix.height = usbvision->curheight;
947 vf->fmt.pix.pixelformat = usbvision->palette.format;
948 vf->fmt.pix.bytesperline =
949 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
950 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
951 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
952 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
953
954 return 0;
955 }
956
957 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
958 struct v4l2_format *vf)
959 {
960 struct usb_usbvision *usbvision = video_drvdata(file);
961 int formatIdx;
962
963 /* Find requested format in available ones */
964 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
965 if(vf->fmt.pix.pixelformat ==
966 usbvision_v4l2_format[formatIdx].format) {
967 usbvision->palette = usbvision_v4l2_format[formatIdx];
968 break;
969 }
970 }
971 /* robustness */
972 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
973 return -EINVAL;
974 }
975 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
976 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
977
978 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
979 usbvision->palette.bytes_per_pixel;
980 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
981
982 return 0;
983 }
984
985 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
986 struct v4l2_format *vf)
987 {
988 struct usb_usbvision *usbvision = video_drvdata(file);
989 int ret;
990
991 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
992 return ret;
993 }
994
995 /* stop io in case it is already in progress */
996 if(usbvision->streaming == Stream_On) {
997 if ((ret = usbvision_stream_interrupt(usbvision)))
998 return ret;
999 }
1000 usbvision_frames_free(usbvision);
1001 usbvision_empty_framequeues(usbvision);
1002
1003 usbvision->curFrame = NULL;
1004
1005 /* by now we are committed to the new data... */
1006 mutex_lock(&usbvision->lock);
1007 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1008 mutex_unlock(&usbvision->lock);
1009
1010 return 0;
1011 }
1012
1013 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1014 size_t count, loff_t *ppos)
1015 {
1016 struct usb_usbvision *usbvision = video_drvdata(file);
1017 int noblock = file->f_flags & O_NONBLOCK;
1018 unsigned long lock_flags;
1019
1020 int ret,i;
1021 struct usbvision_frame *frame;
1022
1023 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1024 (unsigned long)count, noblock);
1025
1026 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1027 return -EFAULT;
1028
1029 /* This entry point is compatible with the mmap routines
1030 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1031 to get frames or call read on the device. */
1032 if(!usbvision->num_frames) {
1033 /* First, allocate some frames to work with
1034 if this has not been done with VIDIOC_REQBUF */
1035 usbvision_frames_free(usbvision);
1036 usbvision_empty_framequeues(usbvision);
1037 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1038 }
1039
1040 if(usbvision->streaming != Stream_On) {
1041 /* no stream is running, make it running ! */
1042 usbvision->streaming = Stream_On;
1043 call_all(usbvision, video, s_stream, 1);
1044 }
1045
1046 /* Then, enqueue as many frames as possible
1047 (like a user of VIDIOC_QBUF would do) */
1048 for(i=0;i<usbvision->num_frames;i++) {
1049 frame = &usbvision->frame[i];
1050 if(frame->grabstate == FrameState_Unused) {
1051 /* Mark it as ready and enqueue frame */
1052 frame->grabstate = FrameState_Ready;
1053 frame->scanstate = ScanState_Scanning;
1054 /* Accumulated in usbvision_parse_data() */
1055 frame->scanlength = 0;
1056
1057 /* set v4l2_format index */
1058 frame->v4l2_format = usbvision->palette;
1059
1060 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1061 list_add_tail(&frame->frame, &usbvision->inqueue);
1062 spin_unlock_irqrestore(&usbvision->queue_lock,
1063 lock_flags);
1064 }
1065 }
1066
1067 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1068 if (list_empty(&(usbvision->outqueue))) {
1069 if(noblock)
1070 return -EAGAIN;
1071
1072 ret = wait_event_interruptible
1073 (usbvision->wait_frame,
1074 !list_empty(&(usbvision->outqueue)));
1075 if (ret)
1076 return ret;
1077 }
1078
1079 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1080 frame = list_entry(usbvision->outqueue.next,
1081 struct usbvision_frame, frame);
1082 list_del(usbvision->outqueue.next);
1083 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1084
1085 /* An error returns an empty frame */
1086 if (frame->grabstate == FrameState_Error) {
1087 frame->bytes_read = 0;
1088 return 0;
1089 }
1090
1091 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1092 __func__,
1093 frame->index, frame->bytes_read, frame->scanlength);
1094
1095 /* copy bytes to user space; we allow for partials reads */
1096 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1097 count = frame->scanlength - frame->bytes_read;
1098
1099 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1100 return -EFAULT;
1101 }
1102
1103 frame->bytes_read += count;
1104 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1105 __func__,
1106 (unsigned long)count, frame->bytes_read);
1107
1108 /* For now, forget the frame if it has not been read in one shot. */
1109 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1110 frame->bytes_read = 0;
1111
1112 /* Mark it as available to be used again. */
1113 frame->grabstate = FrameState_Unused;
1114 /* } */
1115
1116 return count;
1117 }
1118
1119 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1120 {
1121 unsigned long size = vma->vm_end - vma->vm_start,
1122 start = vma->vm_start;
1123 void *pos;
1124 u32 i;
1125 struct usb_usbvision *usbvision = video_drvdata(file);
1126
1127 PDEBUG(DBG_MMAP, "mmap");
1128
1129 mutex_lock(&usbvision->lock);
1130
1131 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1132 mutex_unlock(&usbvision->lock);
1133 return -EFAULT;
1134 }
1135
1136 if (!(vma->vm_flags & VM_WRITE) ||
1137 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1138 mutex_unlock(&usbvision->lock);
1139 return -EINVAL;
1140 }
1141
1142 for (i = 0; i < usbvision->num_frames; i++) {
1143 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1144 vma->vm_pgoff)
1145 break;
1146 }
1147 if (i == usbvision->num_frames) {
1148 PDEBUG(DBG_MMAP,
1149 "mmap: user supplied mapping address is out of range");
1150 mutex_unlock(&usbvision->lock);
1151 return -EINVAL;
1152 }
1153
1154 /* VM_IO is eventually going to replace PageReserved altogether */
1155 vma->vm_flags |= VM_IO;
1156 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1157
1158 pos = usbvision->frame[i].data;
1159 while (size > 0) {
1160
1161 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1162 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1163 mutex_unlock(&usbvision->lock);
1164 return -EAGAIN;
1165 }
1166 start += PAGE_SIZE;
1167 pos += PAGE_SIZE;
1168 size -= PAGE_SIZE;
1169 }
1170
1171 mutex_unlock(&usbvision->lock);
1172 return 0;
1173 }
1174
1175
1176 /*
1177 * Here comes the stuff for radio on usbvision based devices
1178 *
1179 */
1180 static int usbvision_radio_open(struct file *file)
1181 {
1182 struct usb_usbvision *usbvision = video_drvdata(file);
1183 int errCode = 0;
1184
1185 PDEBUG(DBG_IO, "%s:", __func__);
1186
1187 mutex_lock(&usbvision->lock);
1188
1189 if (usbvision->user) {
1190 dev_err(&usbvision->rdev->dev,
1191 "%s: Someone tried to open an already opened USBVision Radio!\n",
1192 __func__);
1193 errCode = -EBUSY;
1194 }
1195 else {
1196 if(PowerOnAtOpen) {
1197 usbvision_reset_powerOffTimer(usbvision);
1198 if (usbvision->power == 0) {
1199 usbvision_power_on(usbvision);
1200 usbvision_i2c_register(usbvision);
1201 }
1202 }
1203
1204 /* Alternate interface 1 is is the biggest frame size */
1205 errCode = usbvision_set_alternate(usbvision);
1206 if (errCode < 0) {
1207 usbvision->last_error = errCode;
1208 errCode = -EBUSY;
1209 goto out;
1210 }
1211
1212 // If so far no errors then we shall start the radio
1213 usbvision->radio = 1;
1214 call_all(usbvision, tuner, s_radio);
1215 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1216 usbvision->user++;
1217 }
1218
1219 if (errCode) {
1220 if (PowerOnAtOpen) {
1221 usbvision_i2c_unregister(usbvision);
1222 usbvision_power_off(usbvision);
1223 usbvision->initialized = 0;
1224 }
1225 }
1226 out:
1227 mutex_unlock(&usbvision->lock);
1228 return errCode;
1229 }
1230
1231
1232 static int usbvision_radio_close(struct file *file)
1233 {
1234 struct usb_usbvision *usbvision = video_drvdata(file);
1235 int errCode = 0;
1236
1237 PDEBUG(DBG_IO, "");
1238
1239 mutex_lock(&usbvision->lock);
1240
1241 /* Set packet size to 0 */
1242 usbvision->ifaceAlt=0;
1243 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1244 usbvision->ifaceAlt);
1245
1246 usbvision_audio_off(usbvision);
1247 usbvision->radio=0;
1248 usbvision->user--;
1249
1250 if (PowerOnAtOpen) {
1251 usbvision_set_powerOffTimer(usbvision);
1252 usbvision->initialized = 0;
1253 }
1254
1255 mutex_unlock(&usbvision->lock);
1256
1257 if (usbvision->remove_pending) {
1258 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1259 usbvision_release(usbvision);
1260 }
1261
1262 PDEBUG(DBG_IO, "success");
1263 return errCode;
1264 }
1265
1266 /*
1267 * Here comes the stuff for vbi on usbvision based devices
1268 *
1269 */
1270 static int usbvision_vbi_open(struct file *file)
1271 {
1272 /* TODO */
1273 return -ENODEV;
1274 }
1275
1276 static int usbvision_vbi_close(struct file *file)
1277 {
1278 /* TODO */
1279 return -ENODEV;
1280 }
1281
1282 static long usbvision_do_vbi_ioctl(struct file *file,
1283 unsigned int cmd, void *arg)
1284 {
1285 /* TODO */
1286 return -ENOIOCTLCMD;
1287 }
1288
1289 static long usbvision_vbi_ioctl(struct file *file,
1290 unsigned int cmd, unsigned long arg)
1291 {
1292 return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1293 }
1294
1295
1296 //
1297 // Video registration stuff
1298 //
1299
1300 // Video template
1301 static const struct v4l2_file_operations usbvision_fops = {
1302 .owner = THIS_MODULE,
1303 .open = usbvision_v4l2_open,
1304 .release = usbvision_v4l2_close,
1305 .read = usbvision_v4l2_read,
1306 .mmap = usbvision_v4l2_mmap,
1307 .ioctl = video_ioctl2,
1308 /* .poll = video_poll, */
1309 };
1310
1311 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1312 .vidioc_querycap = vidioc_querycap,
1313 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1314 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1315 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1316 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1317 .vidioc_reqbufs = vidioc_reqbufs,
1318 .vidioc_querybuf = vidioc_querybuf,
1319 .vidioc_qbuf = vidioc_qbuf,
1320 .vidioc_dqbuf = vidioc_dqbuf,
1321 .vidioc_s_std = vidioc_s_std,
1322 .vidioc_enum_input = vidioc_enum_input,
1323 .vidioc_g_input = vidioc_g_input,
1324 .vidioc_s_input = vidioc_s_input,
1325 .vidioc_queryctrl = vidioc_queryctrl,
1326 .vidioc_g_audio = vidioc_g_audio,
1327 .vidioc_s_audio = vidioc_s_audio,
1328 .vidioc_g_ctrl = vidioc_g_ctrl,
1329 .vidioc_s_ctrl = vidioc_s_ctrl,
1330 .vidioc_streamon = vidioc_streamon,
1331 .vidioc_streamoff = vidioc_streamoff,
1332 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1333 /* .vidiocgmbuf = vidiocgmbuf, */
1334 #endif
1335 .vidioc_g_tuner = vidioc_g_tuner,
1336 .vidioc_s_tuner = vidioc_s_tuner,
1337 .vidioc_g_frequency = vidioc_g_frequency,
1338 .vidioc_s_frequency = vidioc_s_frequency,
1339 #ifdef CONFIG_VIDEO_ADV_DEBUG
1340 .vidioc_g_register = vidioc_g_register,
1341 .vidioc_s_register = vidioc_s_register,
1342 #endif
1343 };
1344
1345 static struct video_device usbvision_video_template = {
1346 .fops = &usbvision_fops,
1347 .ioctl_ops = &usbvision_ioctl_ops,
1348 .name = "usbvision-video",
1349 .release = video_device_release,
1350 .minor = -1,
1351 .tvnorms = USBVISION_NORMS,
1352 .current_norm = V4L2_STD_PAL
1353 };
1354
1355
1356 // Radio template
1357 static const struct v4l2_file_operations usbvision_radio_fops = {
1358 .owner = THIS_MODULE,
1359 .open = usbvision_radio_open,
1360 .release = usbvision_radio_close,
1361 .ioctl = video_ioctl2,
1362 };
1363
1364 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1365 .vidioc_querycap = vidioc_querycap,
1366 .vidioc_enum_input = vidioc_enum_input,
1367 .vidioc_g_input = vidioc_g_input,
1368 .vidioc_s_input = vidioc_s_input,
1369 .vidioc_queryctrl = vidioc_queryctrl,
1370 .vidioc_g_audio = vidioc_g_audio,
1371 .vidioc_s_audio = vidioc_s_audio,
1372 .vidioc_g_ctrl = vidioc_g_ctrl,
1373 .vidioc_s_ctrl = vidioc_s_ctrl,
1374 .vidioc_g_tuner = vidioc_g_tuner,
1375 .vidioc_s_tuner = vidioc_s_tuner,
1376 .vidioc_g_frequency = vidioc_g_frequency,
1377 .vidioc_s_frequency = vidioc_s_frequency,
1378 };
1379
1380 static struct video_device usbvision_radio_template = {
1381 .fops = &usbvision_radio_fops,
1382 .name = "usbvision-radio",
1383 .release = video_device_release,
1384 .minor = -1,
1385 .ioctl_ops = &usbvision_radio_ioctl_ops,
1386
1387 .tvnorms = USBVISION_NORMS,
1388 .current_norm = V4L2_STD_PAL
1389 };
1390
1391 // vbi template
1392 static const struct v4l2_file_operations usbvision_vbi_fops = {
1393 .owner = THIS_MODULE,
1394 .open = usbvision_vbi_open,
1395 .release = usbvision_vbi_close,
1396 .ioctl = usbvision_vbi_ioctl,
1397 };
1398
1399 static struct video_device usbvision_vbi_template=
1400 {
1401 .fops = &usbvision_vbi_fops,
1402 .release = video_device_release,
1403 .name = "usbvision-vbi",
1404 .minor = -1,
1405 };
1406
1407
1408 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1409 struct video_device *vdev_template,
1410 char *name)
1411 {
1412 struct usb_device *usb_dev = usbvision->dev;
1413 struct video_device *vdev;
1414
1415 if (usb_dev == NULL) {
1416 dev_err(&usbvision->dev->dev,
1417 "%s: usbvision->dev is not set\n", __func__);
1418 return NULL;
1419 }
1420
1421 vdev = video_device_alloc();
1422 if (NULL == vdev) {
1423 return NULL;
1424 }
1425 *vdev = *vdev_template;
1426 // vdev->minor = -1;
1427 vdev->v4l2_dev = &usbvision->v4l2_dev;
1428 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1429 video_set_drvdata(vdev, usbvision);
1430 return vdev;
1431 }
1432
1433 // unregister video4linux devices
1434 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1435 {
1436 // vbi Device:
1437 if (usbvision->vbi) {
1438 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1439 usbvision->vbi->num);
1440 if (usbvision->vbi->minor != -1) {
1441 video_unregister_device(usbvision->vbi);
1442 } else {
1443 video_device_release(usbvision->vbi);
1444 }
1445 usbvision->vbi = NULL;
1446 }
1447
1448 // Radio Device:
1449 if (usbvision->rdev) {
1450 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1451 usbvision->rdev->num);
1452 if (usbvision->rdev->minor != -1) {
1453 video_unregister_device(usbvision->rdev);
1454 } else {
1455 video_device_release(usbvision->rdev);
1456 }
1457 usbvision->rdev = NULL;
1458 }
1459
1460 // Video Device:
1461 if (usbvision->vdev) {
1462 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1463 usbvision->vdev->num);
1464 if (usbvision->vdev->minor != -1) {
1465 video_unregister_device(usbvision->vdev);
1466 } else {
1467 video_device_release(usbvision->vdev);
1468 }
1469 usbvision->vdev = NULL;
1470 }
1471 }
1472
1473 // register video4linux devices
1474 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1475 {
1476 // Video Device:
1477 usbvision->vdev = usbvision_vdev_init(usbvision,
1478 &usbvision_video_template,
1479 "USBVision Video");
1480 if (usbvision->vdev == NULL) {
1481 goto err_exit;
1482 }
1483 if (video_register_device(usbvision->vdev,
1484 VFL_TYPE_GRABBER,
1485 video_nr)<0) {
1486 goto err_exit;
1487 }
1488 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1489 usbvision->nr, usbvision->vdev->num);
1490
1491 // Radio Device:
1492 if (usbvision_device_data[usbvision->DevModel].Radio) {
1493 // usbvision has radio
1494 usbvision->rdev = usbvision_vdev_init(usbvision,
1495 &usbvision_radio_template,
1496 "USBVision Radio");
1497 if (usbvision->rdev == NULL) {
1498 goto err_exit;
1499 }
1500 if (video_register_device(usbvision->rdev,
1501 VFL_TYPE_RADIO,
1502 radio_nr)<0) {
1503 goto err_exit;
1504 }
1505 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1506 usbvision->nr, usbvision->rdev->num);
1507 }
1508 // vbi Device:
1509 if (usbvision_device_data[usbvision->DevModel].vbi) {
1510 usbvision->vbi = usbvision_vdev_init(usbvision,
1511 &usbvision_vbi_template,
1512 "USBVision VBI");
1513 if (usbvision->vdev == NULL) {
1514 goto err_exit;
1515 }
1516 if (video_register_device(usbvision->vbi,
1517 VFL_TYPE_VBI,
1518 vbi_nr)<0) {
1519 goto err_exit;
1520 }
1521 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1522 usbvision->nr, usbvision->vbi->num);
1523 }
1524 // all done
1525 return 0;
1526
1527 err_exit:
1528 dev_err(&usbvision->dev->dev,
1529 "USBVision[%d]: video_register_device() failed\n",
1530 usbvision->nr);
1531 usbvision_unregister_video(usbvision);
1532 return -1;
1533 }
1534
1535 /*
1536 * usbvision_alloc()
1537 *
1538 * This code allocates the struct usb_usbvision.
1539 * It is filled with default values.
1540 *
1541 * Returns NULL on error, a pointer to usb_usbvision else.
1542 *
1543 */
1544 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1545 {
1546 struct usb_usbvision *usbvision;
1547
1548 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1549 if (usbvision == NULL)
1550 return NULL;
1551
1552 usbvision->dev = dev;
1553 if (v4l2_device_register(&dev->dev, &usbvision->v4l2_dev))
1554 goto err_free;
1555
1556 mutex_init(&usbvision->lock); /* available */
1557
1558 // prepare control urb for control messages during interrupts
1559 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1560 if (usbvision->ctrlUrb == NULL)
1561 goto err_unreg;
1562 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1563
1564 usbvision_init_powerOffTimer(usbvision);
1565
1566 return usbvision;
1567
1568 err_unreg:
1569 v4l2_device_unregister(&usbvision->v4l2_dev);
1570 err_free:
1571 kfree(usbvision);
1572 return NULL;
1573 }
1574
1575 /*
1576 * usbvision_release()
1577 *
1578 * This code does final release of struct usb_usbvision. This happens
1579 * after the device is disconnected -and- all clients closed their files.
1580 *
1581 */
1582 static void usbvision_release(struct usb_usbvision *usbvision)
1583 {
1584 PDEBUG(DBG_PROBE, "");
1585
1586 mutex_lock(&usbvision->lock);
1587
1588 usbvision_reset_powerOffTimer(usbvision);
1589
1590 usbvision->initialized = 0;
1591
1592 mutex_unlock(&usbvision->lock);
1593
1594 usbvision_remove_sysfs(usbvision->vdev);
1595 usbvision_unregister_video(usbvision);
1596
1597 if (usbvision->ctrlUrb) {
1598 usb_free_urb(usbvision->ctrlUrb);
1599 }
1600
1601 v4l2_device_unregister(&usbvision->v4l2_dev);
1602 kfree(usbvision);
1603
1604 PDEBUG(DBG_PROBE, "success");
1605 }
1606
1607
1608 /*********************** usb interface **********************************/
1609
1610 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1611 {
1612 int model;
1613
1614 if (usbvision == NULL)
1615 return;
1616
1617 model = usbvision->DevModel;
1618 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1619
1620 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1621 usbvision->Vin_Reg2_Preset =
1622 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1623 } else {
1624 usbvision->Vin_Reg2_Preset = 0;
1625 }
1626
1627 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1628
1629 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1630 usbvision->ctl_input = 0;
1631
1632 /* This should be here to make i2c clients to be able to register */
1633 /* first switch off audio */
1634 usbvision_audio_off(usbvision);
1635 if (!PowerOnAtOpen) {
1636 /* and then power up the noisy tuner */
1637 usbvision_power_on(usbvision);
1638 usbvision_i2c_register(usbvision);
1639 }
1640 }
1641
1642 /*
1643 * usbvision_probe()
1644 *
1645 * This procedure queries device descriptor and accepts the interface
1646 * if it looks like USBVISION video device
1647 *
1648 */
1649 static int __devinit usbvision_probe(struct usb_interface *intf,
1650 const struct usb_device_id *devid)
1651 {
1652 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1653 struct usb_interface *uif;
1654 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1655 const struct usb_host_interface *interface;
1656 struct usb_usbvision *usbvision = NULL;
1657 const struct usb_endpoint_descriptor *endpoint;
1658 int model,i;
1659
1660 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1661 dev->descriptor.idVendor,
1662 dev->descriptor.idProduct, ifnum);
1663
1664 model = devid->driver_info;
1665 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1666 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1667 return -ENODEV;
1668 }
1669 printk(KERN_INFO "%s: %s found\n", __func__,
1670 usbvision_device_data[model].ModelString);
1671
1672 if (usbvision_device_data[model].Interface >= 0) {
1673 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1674 } else {
1675 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1676 }
1677 endpoint = &interface->endpoint[1].desc;
1678 if (!usb_endpoint_xfer_isoc(endpoint)) {
1679 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1680 __func__, ifnum);
1681 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1682 __func__, endpoint->bmAttributes);
1683 return -ENODEV;
1684 }
1685 if (usb_endpoint_dir_out(endpoint)) {
1686 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1687 __func__, ifnum);
1688 return -ENODEV;
1689 }
1690
1691 if ((usbvision = usbvision_alloc(dev)) == NULL) {
1692 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1693 return -ENOMEM;
1694 }
1695
1696 if (dev->descriptor.bNumConfigurations > 1) {
1697 usbvision->bridgeType = BRIDGE_NT1004;
1698 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1699 usbvision->bridgeType = BRIDGE_NT1005;
1700 } else {
1701 usbvision->bridgeType = BRIDGE_NT1003;
1702 }
1703 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1704
1705 mutex_lock(&usbvision->lock);
1706
1707 /* compute alternate max packet sizes */
1708 uif = dev->actconfig->interface[0];
1709
1710 usbvision->num_alt=uif->num_altsetting;
1711 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1712 usbvision->alt_max_pkt_size = kmalloc(32*
1713 usbvision->num_alt,GFP_KERNEL);
1714 if (usbvision->alt_max_pkt_size == NULL) {
1715 dev_err(&intf->dev, "usbvision: out of memory!\n");
1716 mutex_unlock(&usbvision->lock);
1717 return -ENOMEM;
1718 }
1719
1720 for (i = 0; i < usbvision->num_alt ; i++) {
1721 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1722 wMaxPacketSize);
1723 usbvision->alt_max_pkt_size[i] =
1724 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1725 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1726 usbvision->alt_max_pkt_size[i]);
1727 }
1728
1729
1730 usbvision->nr = usbvision_nr++;
1731
1732 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1733 if (usbvision->have_tuner) {
1734 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1735 }
1736
1737 usbvision->DevModel = model;
1738 usbvision->remove_pending = 0;
1739 usbvision->iface = ifnum;
1740 usbvision->ifaceAlt = 0;
1741 usbvision->video_endp = endpoint->bEndpointAddress;
1742 usbvision->isocPacketSize = 0;
1743 usbvision->usb_bandwidth = 0;
1744 usbvision->user = 0;
1745 usbvision->streaming = Stream_Off;
1746 usbvision_register_video(usbvision);
1747 usbvision_configure_video(usbvision);
1748 mutex_unlock(&usbvision->lock);
1749
1750
1751 usb_set_intfdata (intf, usbvision);
1752 usbvision_create_sysfs(usbvision->vdev);
1753
1754 PDEBUG(DBG_PROBE, "success");
1755 return 0;
1756 }
1757
1758
1759 /*
1760 * usbvision_disconnect()
1761 *
1762 * This procedure stops all driver activity, deallocates interface-private
1763 * structure (pointed by 'ptr') and after that driver should be removable
1764 * with no ill consequences.
1765 *
1766 */
1767 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1768 {
1769 struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1770
1771 PDEBUG(DBG_PROBE, "");
1772
1773 if (usbvision == NULL) {
1774 dev_err(&usbvision->dev->dev,
1775 "%s: usb_get_intfdata() failed\n", __func__);
1776 return;
1777 }
1778 usb_set_intfdata (intf, NULL);
1779
1780 mutex_lock(&usbvision->lock);
1781
1782 // At this time we ask to cancel outstanding URBs
1783 usbvision_stop_isoc(usbvision);
1784
1785 if (usbvision->power) {
1786 usbvision_i2c_unregister(usbvision);
1787 usbvision_power_off(usbvision);
1788 }
1789 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1790
1791 usb_put_dev(usbvision->dev);
1792 usbvision->dev = NULL; // USB device is no more
1793
1794 mutex_unlock(&usbvision->lock);
1795
1796 if (usbvision->user) {
1797 printk(KERN_INFO "%s: In use, disconnect pending\n",
1798 __func__);
1799 wake_up_interruptible(&usbvision->wait_frame);
1800 wake_up_interruptible(&usbvision->wait_stream);
1801 } else {
1802 usbvision_release(usbvision);
1803 }
1804
1805 PDEBUG(DBG_PROBE, "success");
1806 }
1807
1808 static struct usb_driver usbvision_driver = {
1809 .name = "usbvision",
1810 .id_table = usbvision_table,
1811 .probe = usbvision_probe,
1812 .disconnect = usbvision_disconnect
1813 };
1814
1815 /*
1816 * usbvision_init()
1817 *
1818 * This code is run to initialize the driver.
1819 *
1820 */
1821 static int __init usbvision_init(void)
1822 {
1823 int errCode;
1824
1825 PDEBUG(DBG_PROBE, "");
1826
1827 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1828 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1829 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1830
1831 /* disable planar mode support unless compression enabled */
1832 if (isocMode != ISOC_MODE_COMPRESS ) {
1833 // FIXME : not the right way to set supported flag
1834 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1835 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1836 }
1837
1838 errCode = usb_register(&usbvision_driver);
1839
1840 if (errCode == 0) {
1841 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1842 PDEBUG(DBG_PROBE, "success");
1843 }
1844 return errCode;
1845 }
1846
1847 static void __exit usbvision_exit(void)
1848 {
1849 PDEBUG(DBG_PROBE, "");
1850
1851 usb_deregister(&usbvision_driver);
1852 PDEBUG(DBG_PROBE, "success");
1853 }
1854
1855 module_init(usbvision_init);
1856 module_exit(usbvision_exit);
1857
1858 /*
1859 * Overrides for Emacs so that we follow Linus's tabbing style.
1860 * ---------------------------------------------------------------------------
1861 * Local variables:
1862 * c-basic-offset: 8
1863 * End:
1864 */
Linux kernel - Deliverables
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