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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel...
[deliverable/linux.git] / drivers / media / video / usbvision / usbvision-video.c
1 /*
2 * USB USBVISION Video device driver 0.9.10
3 *
4 *
5 *
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7 *
8 * This module is part of usbvision driver project.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Let's call the version 0.... until compression decoding is completely
25 * implemented.
26 *
27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28 * It was based on USB CPiA driver written by Peter Pregler,
29 * Scott J. Bertin and Johannes Erdfelt
30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32 * Updates to driver completed by Dwaine P. Garden
33 *
34 *
35 * TODO:
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
38 * nt1003 memory.
39 * - Add audio on endpoint 3 for nt1004 chip.
40 * Seems impossible, needs a codec interface. Which one?
41 * - Clean up the driver.
42 * - optimization for performance.
43 * - Add Videotext capability (VBI). Working on it.....
44 * - Check audio for other devices
45 *
46 */
47
48 #include <linux/version.h>
49 #include <linux/kernel.h>
50 #include <linux/list.h>
51 #include <linux/timer.h>
52 #include <linux/slab.h>
53 #include <linux/smp_lock.h>
54 #include <linux/mm.h>
55 #include <linux/highmem.h>
56 #include <linux/vmalloc.h>
57 #include <linux/module.h>
58 #include <linux/init.h>
59 #include <linux/spinlock.h>
60 #include <asm/io.h>
61 #include <linux/videodev2.h>
62 #include <linux/i2c.h>
63
64 #include <media/saa7115.h>
65 #include <media/v4l2-common.h>
66 #include <media/v4l2-ioctl.h>
67 #include <media/tuner.h>
68
69 #include <linux/workqueue.h>
70
71 #include "usbvision.h"
72 #include "usbvision-cards.h"
73
74 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
75 Dwaine Garden <DwaineGarden@rogers.com>"
76 #define DRIVER_NAME "usbvision"
77 #define DRIVER_ALIAS "USBVision"
78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
79 #define DRIVER_LICENSE "GPL"
80 #define USBVISION_DRIVER_VERSION_MAJOR 0
81 #define USBVISION_DRIVER_VERSION_MINOR 9
82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
84 USBVISION_DRIVER_VERSION_MINOR,\
85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
87 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
88 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
89
90 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
91
92
93 #ifdef USBVISION_DEBUG
94 #define PDEBUG(level, fmt, args...) { \
95 if (video_debug & (level)) \
96 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
97 __func__, __LINE__ , ## args); \
98 }
99 #else
100 #define PDEBUG(level, fmt, args...) do {} while(0)
101 #endif
102
103 #define DBG_IO 1<<1
104 #define DBG_PROBE 1<<2
105 #define DBG_MMAP 1<<3
106
107 //String operations
108 #define rmspace(str) while(*str==' ') str++;
109 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
110
111
112 /* sequential number of usbvision device */
113 static int usbvision_nr;
114
115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
116 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
117 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
118 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
119 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
120 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
121 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
122 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
123 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
124 };
125
126 /* Function prototypes */
127 static void usbvision_release(struct usb_usbvision *usbvision);
128
129 /* Default initialization of device driver parameters */
130 /* Set the default format for ISOC endpoint */
131 static int isocMode = ISOC_MODE_COMPRESS;
132 /* Set the default Debug Mode of the device driver */
133 static int video_debug;
134 /* Set the default device to power on at startup */
135 static int PowerOnAtOpen = 1;
136 /* Sequential Number of Video Device */
137 static int video_nr = -1;
138 /* Sequential Number of Radio Device */
139 static int radio_nr = -1;
140
141 /* Grab parameters for the device driver */
142
143 /* Showing parameters under SYSFS */
144 module_param(isocMode, int, 0444);
145 module_param(video_debug, int, 0444);
146 module_param(PowerOnAtOpen, int, 0444);
147 module_param(video_nr, int, 0444);
148 module_param(radio_nr, int, 0444);
149
150 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
151 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
152 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
153 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
154 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
155
156
157 // Misc stuff
158 MODULE_AUTHOR(DRIVER_AUTHOR);
159 MODULE_DESCRIPTION(DRIVER_DESC);
160 MODULE_LICENSE(DRIVER_LICENSE);
161 MODULE_VERSION(USBVISION_VERSION_STRING);
162 MODULE_ALIAS(DRIVER_ALIAS);
163
164
165 /*****************************************************************************/
166 /* SYSFS Code - Copied from the stv680.c usb module. */
167 /* Device information is located at /sys/class/video4linux/video0 */
168 /* Device parameters information is located at /sys/module/usbvision */
169 /* Device USB Information is located at */
170 /* /sys/bus/usb/drivers/USBVision Video Grabber */
171 /*****************************************************************************/
172
173 #define YES_NO(x) ((x) ? "Yes" : "No")
174
175 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
176 {
177 struct video_device *vdev =
178 container_of(cd, struct video_device, dev);
179 return video_get_drvdata(vdev);
180 }
181
182 static ssize_t show_version(struct device *cd,
183 struct device_attribute *attr, char *buf)
184 {
185 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
186 }
187 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
188
189 static ssize_t show_model(struct device *cd,
190 struct device_attribute *attr, char *buf)
191 {
192 struct video_device *vdev =
193 container_of(cd, struct video_device, dev);
194 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
195 return sprintf(buf, "%s\n",
196 usbvision_device_data[usbvision->DevModel].ModelString);
197 }
198 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
199
200 static ssize_t show_hue(struct device *cd,
201 struct device_attribute *attr, char *buf)
202 {
203 struct video_device *vdev =
204 container_of(cd, struct video_device, dev);
205 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
206 struct v4l2_control ctrl;
207 ctrl.id = V4L2_CID_HUE;
208 ctrl.value = 0;
209 if(usbvision->user)
210 call_all(usbvision, core, g_ctrl, &ctrl);
211 return sprintf(buf, "%d\n", ctrl.value);
212 }
213 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
214
215 static ssize_t show_contrast(struct device *cd,
216 struct device_attribute *attr, char *buf)
217 {
218 struct video_device *vdev =
219 container_of(cd, struct video_device, dev);
220 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
221 struct v4l2_control ctrl;
222 ctrl.id = V4L2_CID_CONTRAST;
223 ctrl.value = 0;
224 if(usbvision->user)
225 call_all(usbvision, core, g_ctrl, &ctrl);
226 return sprintf(buf, "%d\n", ctrl.value);
227 }
228 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
229
230 static ssize_t show_brightness(struct device *cd,
231 struct device_attribute *attr, char *buf)
232 {
233 struct video_device *vdev =
234 container_of(cd, struct video_device, dev);
235 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
236 struct v4l2_control ctrl;
237 ctrl.id = V4L2_CID_BRIGHTNESS;
238 ctrl.value = 0;
239 if(usbvision->user)
240 call_all(usbvision, core, g_ctrl, &ctrl);
241 return sprintf(buf, "%d\n", ctrl.value);
242 }
243 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
244
245 static ssize_t show_saturation(struct device *cd,
246 struct device_attribute *attr, char *buf)
247 {
248 struct video_device *vdev =
249 container_of(cd, struct video_device, dev);
250 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
251 struct v4l2_control ctrl;
252 ctrl.id = V4L2_CID_SATURATION;
253 ctrl.value = 0;
254 if(usbvision->user)
255 call_all(usbvision, core, g_ctrl, &ctrl);
256 return sprintf(buf, "%d\n", ctrl.value);
257 }
258 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
259
260 static ssize_t show_streaming(struct device *cd,
261 struct device_attribute *attr, char *buf)
262 {
263 struct video_device *vdev =
264 container_of(cd, struct video_device, dev);
265 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
266 return sprintf(buf, "%s\n",
267 YES_NO(usbvision->streaming==Stream_On?1:0));
268 }
269 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
270
271 static ssize_t show_compression(struct device *cd,
272 struct device_attribute *attr, char *buf)
273 {
274 struct video_device *vdev =
275 container_of(cd, struct video_device, dev);
276 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
277 return sprintf(buf, "%s\n",
278 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
279 }
280 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
281
282 static ssize_t show_device_bridge(struct device *cd,
283 struct device_attribute *attr, char *buf)
284 {
285 struct video_device *vdev =
286 container_of(cd, struct video_device, dev);
287 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
288 return sprintf(buf, "%d\n", usbvision->bridgeType);
289 }
290 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
291
292 static void usbvision_create_sysfs(struct video_device *vdev)
293 {
294 int res;
295 if (!vdev)
296 return;
297 do {
298 res = device_create_file(&vdev->dev, &dev_attr_version);
299 if (res<0)
300 break;
301 res = device_create_file(&vdev->dev, &dev_attr_model);
302 if (res<0)
303 break;
304 res = device_create_file(&vdev->dev, &dev_attr_hue);
305 if (res<0)
306 break;
307 res = device_create_file(&vdev->dev, &dev_attr_contrast);
308 if (res<0)
309 break;
310 res = device_create_file(&vdev->dev, &dev_attr_brightness);
311 if (res<0)
312 break;
313 res = device_create_file(&vdev->dev, &dev_attr_saturation);
314 if (res<0)
315 break;
316 res = device_create_file(&vdev->dev, &dev_attr_streaming);
317 if (res<0)
318 break;
319 res = device_create_file(&vdev->dev, &dev_attr_compression);
320 if (res<0)
321 break;
322 res = device_create_file(&vdev->dev, &dev_attr_bridge);
323 if (res>=0)
324 return;
325 } while (0);
326
327 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
328 }
329
330 static void usbvision_remove_sysfs(struct video_device *vdev)
331 {
332 if (vdev) {
333 device_remove_file(&vdev->dev, &dev_attr_version);
334 device_remove_file(&vdev->dev, &dev_attr_model);
335 device_remove_file(&vdev->dev, &dev_attr_hue);
336 device_remove_file(&vdev->dev, &dev_attr_contrast);
337 device_remove_file(&vdev->dev, &dev_attr_brightness);
338 device_remove_file(&vdev->dev, &dev_attr_saturation);
339 device_remove_file(&vdev->dev, &dev_attr_streaming);
340 device_remove_file(&vdev->dev, &dev_attr_compression);
341 device_remove_file(&vdev->dev, &dev_attr_bridge);
342 }
343 }
344
345 /*
346 * usbvision_open()
347 *
348 * This is part of Video 4 Linux API. The driver can be opened by one
349 * client only (checks internal counter 'usbvision->user'). The procedure
350 * then allocates buffers needed for video processing.
351 *
352 */
353 static int usbvision_v4l2_open(struct file *file)
354 {
355 struct usb_usbvision *usbvision = video_drvdata(file);
356 int errCode = 0;
357
358 PDEBUG(DBG_IO, "open");
359
360 mutex_lock(&usbvision->lock);
361 usbvision_reset_powerOffTimer(usbvision);
362
363 if (usbvision->user)
364 errCode = -EBUSY;
365 else {
366 /* Allocate memory for the scratch ring buffer */
367 errCode = usbvision_scratch_alloc(usbvision);
368 if (isocMode==ISOC_MODE_COMPRESS) {
369 /* Allocate intermediate decompression buffers
370 only if needed */
371 errCode = usbvision_decompress_alloc(usbvision);
372 }
373 if (errCode) {
374 /* Deallocate all buffers if trouble */
375 usbvision_scratch_free(usbvision);
376 usbvision_decompress_free(usbvision);
377 }
378 }
379
380 /* If so far no errors then we shall start the camera */
381 if (!errCode) {
382 if (usbvision->power == 0) {
383 usbvision_power_on(usbvision);
384 usbvision_i2c_register(usbvision);
385 }
386
387 /* Send init sequence only once, it's large! */
388 if (!usbvision->initialized) {
389 int setup_ok = 0;
390 setup_ok = usbvision_setup(usbvision,isocMode);
391 if (setup_ok)
392 usbvision->initialized = 1;
393 else
394 errCode = -EBUSY;
395 }
396
397 if (!errCode) {
398 usbvision_begin_streaming(usbvision);
399 errCode = usbvision_init_isoc(usbvision);
400 /* device must be initialized before isoc transfer */
401 usbvision_muxsel(usbvision,0);
402 usbvision->user++;
403 } else {
404 if (PowerOnAtOpen) {
405 usbvision_i2c_unregister(usbvision);
406 usbvision_power_off(usbvision);
407 usbvision->initialized = 0;
408 }
409 }
410 }
411
412 /* prepare queues */
413 usbvision_empty_framequeues(usbvision);
414
415 PDEBUG(DBG_IO, "success");
416 mutex_unlock(&usbvision->lock);
417 return errCode;
418 }
419
420 /*
421 * usbvision_v4l2_close()
422 *
423 * This is part of Video 4 Linux API. The procedure
424 * stops streaming and deallocates all buffers that were earlier
425 * allocated in usbvision_v4l2_open().
426 *
427 */
428 static int usbvision_v4l2_close(struct file *file)
429 {
430 struct usb_usbvision *usbvision = video_drvdata(file);
431
432 PDEBUG(DBG_IO, "close");
433 mutex_lock(&usbvision->lock);
434
435 usbvision_audio_off(usbvision);
436 usbvision_restart_isoc(usbvision);
437 usbvision_stop_isoc(usbvision);
438
439 usbvision_decompress_free(usbvision);
440 usbvision_frames_free(usbvision);
441 usbvision_empty_framequeues(usbvision);
442 usbvision_scratch_free(usbvision);
443
444 usbvision->user--;
445
446 if (PowerOnAtOpen) {
447 /* power off in a little while
448 to avoid off/on every close/open short sequences */
449 usbvision_set_powerOffTimer(usbvision);
450 usbvision->initialized = 0;
451 }
452
453 mutex_unlock(&usbvision->lock);
454
455 if (usbvision->remove_pending) {
456 printk(KERN_INFO "%s: Final disconnect\n", __func__);
457 usbvision_release(usbvision);
458 }
459
460 PDEBUG(DBG_IO, "success");
461 return 0;
462 }
463
464
465 /*
466 * usbvision_ioctl()
467 *
468 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
469 *
470 */
471 #ifdef CONFIG_VIDEO_ADV_DEBUG
472 static int vidioc_g_register (struct file *file, void *priv,
473 struct v4l2_dbg_register *reg)
474 {
475 struct usb_usbvision *usbvision = video_drvdata(file);
476 int errCode;
477
478 if (!v4l2_chip_match_host(&reg->match))
479 return -EINVAL;
480 /* NT100x has a 8-bit register space */
481 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
482 if (errCode < 0) {
483 dev_err(&usbvision->vdev->dev,
484 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
485 __func__, errCode);
486 return errCode;
487 }
488 reg->val = errCode;
489 reg->size = 1;
490 return 0;
491 }
492
493 static int vidioc_s_register (struct file *file, void *priv,
494 struct v4l2_dbg_register *reg)
495 {
496 struct usb_usbvision *usbvision = video_drvdata(file);
497 int errCode;
498
499 if (!v4l2_chip_match_host(&reg->match))
500 return -EINVAL;
501 /* NT100x has a 8-bit register space */
502 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
503 if (errCode < 0) {
504 dev_err(&usbvision->vdev->dev,
505 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
506 __func__, errCode);
507 return errCode;
508 }
509 return 0;
510 }
511 #endif
512
513 static int vidioc_querycap (struct file *file, void *priv,
514 struct v4l2_capability *vc)
515 {
516 struct usb_usbvision *usbvision = video_drvdata(file);
517
518 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
519 strlcpy(vc->card,
520 usbvision_device_data[usbvision->DevModel].ModelString,
521 sizeof(vc->card));
522 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
523 vc->version = USBVISION_DRIVER_VERSION;
524 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
525 V4L2_CAP_AUDIO |
526 V4L2_CAP_READWRITE |
527 V4L2_CAP_STREAMING |
528 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
529 return 0;
530 }
531
532 static int vidioc_enum_input (struct file *file, void *priv,
533 struct v4l2_input *vi)
534 {
535 struct usb_usbvision *usbvision = video_drvdata(file);
536 int chan;
537
538 if (vi->index >= usbvision->video_inputs)
539 return -EINVAL;
540 if (usbvision->have_tuner) {
541 chan = vi->index;
542 } else {
543 chan = vi->index + 1; /*skip Television string*/
544 }
545 /* Determine the requested input characteristics
546 specific for each usbvision card model */
547 switch(chan) {
548 case 0:
549 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
550 strcpy(vi->name, "White Video Input");
551 } else {
552 strcpy(vi->name, "Television");
553 vi->type = V4L2_INPUT_TYPE_TUNER;
554 vi->audioset = 1;
555 vi->tuner = chan;
556 vi->std = USBVISION_NORMS;
557 }
558 break;
559 case 1:
560 vi->type = V4L2_INPUT_TYPE_CAMERA;
561 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
562 strcpy(vi->name, "Green Video Input");
563 } else {
564 strcpy(vi->name, "Composite Video Input");
565 }
566 vi->std = V4L2_STD_PAL;
567 break;
568 case 2:
569 vi->type = V4L2_INPUT_TYPE_CAMERA;
570 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
571 strcpy(vi->name, "Yellow Video Input");
572 } else {
573 strcpy(vi->name, "S-Video Input");
574 }
575 vi->std = V4L2_STD_PAL;
576 break;
577 case 3:
578 vi->type = V4L2_INPUT_TYPE_CAMERA;
579 strcpy(vi->name, "Red Video Input");
580 vi->std = V4L2_STD_PAL;
581 break;
582 }
583 return 0;
584 }
585
586 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
587 {
588 struct usb_usbvision *usbvision = video_drvdata(file);
589
590 *input = usbvision->ctl_input;
591 return 0;
592 }
593
594 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
595 {
596 struct usb_usbvision *usbvision = video_drvdata(file);
597
598 if (input >= usbvision->video_inputs)
599 return -EINVAL;
600
601 mutex_lock(&usbvision->lock);
602 usbvision_muxsel(usbvision, input);
603 usbvision_set_input(usbvision);
604 usbvision_set_output(usbvision,
605 usbvision->curwidth,
606 usbvision->curheight);
607 mutex_unlock(&usbvision->lock);
608 return 0;
609 }
610
611 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
612 {
613 struct usb_usbvision *usbvision = video_drvdata(file);
614
615 usbvision->tvnormId=*id;
616
617 mutex_lock(&usbvision->lock);
618 call_all(usbvision, core, s_std, usbvision->tvnormId);
619 mutex_unlock(&usbvision->lock);
620 /* propagate the change to the decoder */
621 usbvision_muxsel(usbvision, usbvision->ctl_input);
622
623 return 0;
624 }
625
626 static int vidioc_g_tuner (struct file *file, void *priv,
627 struct v4l2_tuner *vt)
628 {
629 struct usb_usbvision *usbvision = video_drvdata(file);
630
631 if (!usbvision->have_tuner || vt->index) // Only tuner 0
632 return -EINVAL;
633 if(usbvision->radio) {
634 strcpy(vt->name, "Radio");
635 vt->type = V4L2_TUNER_RADIO;
636 } else {
637 strcpy(vt->name, "Television");
638 }
639 /* Let clients fill in the remainder of this struct */
640 call_all(usbvision, tuner, g_tuner, vt);
641
642 return 0;
643 }
644
645 static int vidioc_s_tuner (struct file *file, void *priv,
646 struct v4l2_tuner *vt)
647 {
648 struct usb_usbvision *usbvision = video_drvdata(file);
649
650 // Only no or one tuner for now
651 if (!usbvision->have_tuner || vt->index)
652 return -EINVAL;
653 /* let clients handle this */
654 call_all(usbvision, tuner, s_tuner, vt);
655
656 return 0;
657 }
658
659 static int vidioc_g_frequency (struct file *file, void *priv,
660 struct v4l2_frequency *freq)
661 {
662 struct usb_usbvision *usbvision = video_drvdata(file);
663
664 freq->tuner = 0; // Only one tuner
665 if(usbvision->radio) {
666 freq->type = V4L2_TUNER_RADIO;
667 } else {
668 freq->type = V4L2_TUNER_ANALOG_TV;
669 }
670 freq->frequency = usbvision->freq;
671
672 return 0;
673 }
674
675 static int vidioc_s_frequency (struct file *file, void *priv,
676 struct v4l2_frequency *freq)
677 {
678 struct usb_usbvision *usbvision = video_drvdata(file);
679
680 // Only no or one tuner for now
681 if (!usbvision->have_tuner || freq->tuner)
682 return -EINVAL;
683
684 usbvision->freq = freq->frequency;
685 call_all(usbvision, tuner, s_frequency, freq);
686
687 return 0;
688 }
689
690 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
691 {
692 struct usb_usbvision *usbvision = video_drvdata(file);
693
694 if(usbvision->radio) {
695 strcpy(a->name,"Radio");
696 } else {
697 strcpy(a->name, "TV");
698 }
699
700 return 0;
701 }
702
703 static int vidioc_s_audio (struct file *file, void *fh,
704 struct v4l2_audio *a)
705 {
706 if(a->index) {
707 return -EINVAL;
708 }
709
710 return 0;
711 }
712
713 static int vidioc_queryctrl (struct file *file, void *priv,
714 struct v4l2_queryctrl *ctrl)
715 {
716 struct usb_usbvision *usbvision = video_drvdata(file);
717
718 call_all(usbvision, core, queryctrl, ctrl);
719
720 if (!ctrl->type)
721 return -EINVAL;
722
723 return 0;
724 }
725
726 static int vidioc_g_ctrl (struct file *file, void *priv,
727 struct v4l2_control *ctrl)
728 {
729 struct usb_usbvision *usbvision = video_drvdata(file);
730 call_all(usbvision, core, g_ctrl, ctrl);
731
732 return 0;
733 }
734
735 static int vidioc_s_ctrl (struct file *file, void *priv,
736 struct v4l2_control *ctrl)
737 {
738 struct usb_usbvision *usbvision = video_drvdata(file);
739 call_all(usbvision, core, s_ctrl, ctrl);
740
741 return 0;
742 }
743
744 static int vidioc_reqbufs (struct file *file,
745 void *priv, struct v4l2_requestbuffers *vr)
746 {
747 struct usb_usbvision *usbvision = video_drvdata(file);
748 int ret;
749
750 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
751
752 /* Check input validity:
753 the user must do a VIDEO CAPTURE and MMAP method. */
754 if (vr->memory != V4L2_MEMORY_MMAP)
755 return -EINVAL;
756
757 if(usbvision->streaming == Stream_On) {
758 if ((ret = usbvision_stream_interrupt(usbvision)))
759 return ret;
760 }
761
762 usbvision_frames_free(usbvision);
763 usbvision_empty_framequeues(usbvision);
764 vr->count = usbvision_frames_alloc(usbvision,vr->count);
765
766 usbvision->curFrame = NULL;
767
768 return 0;
769 }
770
771 static int vidioc_querybuf (struct file *file,
772 void *priv, struct v4l2_buffer *vb)
773 {
774 struct usb_usbvision *usbvision = video_drvdata(file);
775 struct usbvision_frame *frame;
776
777 /* FIXME : must control
778 that buffers are mapped (VIDIOC_REQBUFS has been called) */
779 if(vb->index>=usbvision->num_frames) {
780 return -EINVAL;
781 }
782 /* Updating the corresponding frame state */
783 vb->flags = 0;
784 frame = &usbvision->frame[vb->index];
785 if(frame->grabstate >= FrameState_Ready)
786 vb->flags |= V4L2_BUF_FLAG_QUEUED;
787 if(frame->grabstate >= FrameState_Done)
788 vb->flags |= V4L2_BUF_FLAG_DONE;
789 if(frame->grabstate == FrameState_Unused)
790 vb->flags |= V4L2_BUF_FLAG_MAPPED;
791 vb->memory = V4L2_MEMORY_MMAP;
792
793 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
794
795 vb->memory = V4L2_MEMORY_MMAP;
796 vb->field = V4L2_FIELD_NONE;
797 vb->length = usbvision->curwidth*
798 usbvision->curheight*
799 usbvision->palette.bytes_per_pixel;
800 vb->timestamp = usbvision->frame[vb->index].timestamp;
801 vb->sequence = usbvision->frame[vb->index].sequence;
802 return 0;
803 }
804
805 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
806 {
807 struct usb_usbvision *usbvision = video_drvdata(file);
808 struct usbvision_frame *frame;
809 unsigned long lock_flags;
810
811 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
812 if(vb->index>=usbvision->num_frames) {
813 return -EINVAL;
814 }
815
816 frame = &usbvision->frame[vb->index];
817
818 if (frame->grabstate != FrameState_Unused) {
819 return -EAGAIN;
820 }
821
822 /* Mark it as ready and enqueue frame */
823 frame->grabstate = FrameState_Ready;
824 frame->scanstate = ScanState_Scanning;
825 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
826
827 vb->flags &= ~V4L2_BUF_FLAG_DONE;
828
829 /* set v4l2_format index */
830 frame->v4l2_format = usbvision->palette;
831
832 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
833 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
834 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
835
836 return 0;
837 }
838
839 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
840 {
841 struct usb_usbvision *usbvision = video_drvdata(file);
842 int ret;
843 struct usbvision_frame *f;
844 unsigned long lock_flags;
845
846 if (list_empty(&(usbvision->outqueue))) {
847 if (usbvision->streaming == Stream_Idle)
848 return -EINVAL;
849 ret = wait_event_interruptible
850 (usbvision->wait_frame,
851 !list_empty(&(usbvision->outqueue)));
852 if (ret)
853 return ret;
854 }
855
856 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
857 f = list_entry(usbvision->outqueue.next,
858 struct usbvision_frame, frame);
859 list_del(usbvision->outqueue.next);
860 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
861
862 f->grabstate = FrameState_Unused;
863
864 vb->memory = V4L2_MEMORY_MMAP;
865 vb->flags = V4L2_BUF_FLAG_MAPPED |
866 V4L2_BUF_FLAG_QUEUED |
867 V4L2_BUF_FLAG_DONE;
868 vb->index = f->index;
869 vb->sequence = f->sequence;
870 vb->timestamp = f->timestamp;
871 vb->field = V4L2_FIELD_NONE;
872 vb->bytesused = f->scanlength;
873
874 return 0;
875 }
876
877 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
878 {
879 struct usb_usbvision *usbvision = video_drvdata(file);
880
881 usbvision->streaming = Stream_On;
882 call_all(usbvision, video, s_stream, 1);
883
884 return 0;
885 }
886
887 static int vidioc_streamoff(struct file *file,
888 void *priv, enum v4l2_buf_type type)
889 {
890 struct usb_usbvision *usbvision = video_drvdata(file);
891
892 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
893 return -EINVAL;
894
895 if(usbvision->streaming == Stream_On) {
896 usbvision_stream_interrupt(usbvision);
897 /* Stop all video streamings */
898 call_all(usbvision, video, s_stream, 0);
899 }
900 usbvision_empty_framequeues(usbvision);
901
902 return 0;
903 }
904
905 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
906 struct v4l2_fmtdesc *vfd)
907 {
908 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
909 return -EINVAL;
910 }
911 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
912 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
913 return 0;
914 }
915
916 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
917 struct v4l2_format *vf)
918 {
919 struct usb_usbvision *usbvision = video_drvdata(file);
920 vf->fmt.pix.width = usbvision->curwidth;
921 vf->fmt.pix.height = usbvision->curheight;
922 vf->fmt.pix.pixelformat = usbvision->palette.format;
923 vf->fmt.pix.bytesperline =
924 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
925 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
926 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
927 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
928
929 return 0;
930 }
931
932 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
933 struct v4l2_format *vf)
934 {
935 struct usb_usbvision *usbvision = video_drvdata(file);
936 int formatIdx;
937
938 /* Find requested format in available ones */
939 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
940 if(vf->fmt.pix.pixelformat ==
941 usbvision_v4l2_format[formatIdx].format) {
942 usbvision->palette = usbvision_v4l2_format[formatIdx];
943 break;
944 }
945 }
946 /* robustness */
947 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
948 return -EINVAL;
949 }
950 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
951 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
952
953 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
954 usbvision->palette.bytes_per_pixel;
955 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
956
957 return 0;
958 }
959
960 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
961 struct v4l2_format *vf)
962 {
963 struct usb_usbvision *usbvision = video_drvdata(file);
964 int ret;
965
966 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
967 return ret;
968 }
969
970 /* stop io in case it is already in progress */
971 if(usbvision->streaming == Stream_On) {
972 if ((ret = usbvision_stream_interrupt(usbvision)))
973 return ret;
974 }
975 usbvision_frames_free(usbvision);
976 usbvision_empty_framequeues(usbvision);
977
978 usbvision->curFrame = NULL;
979
980 /* by now we are committed to the new data... */
981 mutex_lock(&usbvision->lock);
982 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
983 mutex_unlock(&usbvision->lock);
984
985 return 0;
986 }
987
988 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
989 size_t count, loff_t *ppos)
990 {
991 struct usb_usbvision *usbvision = video_drvdata(file);
992 int noblock = file->f_flags & O_NONBLOCK;
993 unsigned long lock_flags;
994
995 int ret,i;
996 struct usbvision_frame *frame;
997
998 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
999 (unsigned long)count, noblock);
1000
1001 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1002 return -EFAULT;
1003
1004 /* This entry point is compatible with the mmap routines
1005 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1006 to get frames or call read on the device. */
1007 if(!usbvision->num_frames) {
1008 /* First, allocate some frames to work with
1009 if this has not been done with VIDIOC_REQBUF */
1010 usbvision_frames_free(usbvision);
1011 usbvision_empty_framequeues(usbvision);
1012 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1013 }
1014
1015 if(usbvision->streaming != Stream_On) {
1016 /* no stream is running, make it running ! */
1017 usbvision->streaming = Stream_On;
1018 call_all(usbvision, video, s_stream, 1);
1019 }
1020
1021 /* Then, enqueue as many frames as possible
1022 (like a user of VIDIOC_QBUF would do) */
1023 for(i=0;i<usbvision->num_frames;i++) {
1024 frame = &usbvision->frame[i];
1025 if(frame->grabstate == FrameState_Unused) {
1026 /* Mark it as ready and enqueue frame */
1027 frame->grabstate = FrameState_Ready;
1028 frame->scanstate = ScanState_Scanning;
1029 /* Accumulated in usbvision_parse_data() */
1030 frame->scanlength = 0;
1031
1032 /* set v4l2_format index */
1033 frame->v4l2_format = usbvision->palette;
1034
1035 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1036 list_add_tail(&frame->frame, &usbvision->inqueue);
1037 spin_unlock_irqrestore(&usbvision->queue_lock,
1038 lock_flags);
1039 }
1040 }
1041
1042 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1043 if (list_empty(&(usbvision->outqueue))) {
1044 if(noblock)
1045 return -EAGAIN;
1046
1047 ret = wait_event_interruptible
1048 (usbvision->wait_frame,
1049 !list_empty(&(usbvision->outqueue)));
1050 if (ret)
1051 return ret;
1052 }
1053
1054 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1055 frame = list_entry(usbvision->outqueue.next,
1056 struct usbvision_frame, frame);
1057 list_del(usbvision->outqueue.next);
1058 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1059
1060 /* An error returns an empty frame */
1061 if (frame->grabstate == FrameState_Error) {
1062 frame->bytes_read = 0;
1063 return 0;
1064 }
1065
1066 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1067 __func__,
1068 frame->index, frame->bytes_read, frame->scanlength);
1069
1070 /* copy bytes to user space; we allow for partials reads */
1071 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1072 count = frame->scanlength - frame->bytes_read;
1073
1074 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1075 return -EFAULT;
1076 }
1077
1078 frame->bytes_read += count;
1079 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1080 __func__,
1081 (unsigned long)count, frame->bytes_read);
1082
1083 /* For now, forget the frame if it has not been read in one shot. */
1084 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1085 frame->bytes_read = 0;
1086
1087 /* Mark it as available to be used again. */
1088 frame->grabstate = FrameState_Unused;
1089 /* } */
1090
1091 return count;
1092 }
1093
1094 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1095 {
1096 unsigned long size = vma->vm_end - vma->vm_start,
1097 start = vma->vm_start;
1098 void *pos;
1099 u32 i;
1100 struct usb_usbvision *usbvision = video_drvdata(file);
1101
1102 PDEBUG(DBG_MMAP, "mmap");
1103
1104 mutex_lock(&usbvision->lock);
1105
1106 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1107 mutex_unlock(&usbvision->lock);
1108 return -EFAULT;
1109 }
1110
1111 if (!(vma->vm_flags & VM_WRITE) ||
1112 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1113 mutex_unlock(&usbvision->lock);
1114 return -EINVAL;
1115 }
1116
1117 for (i = 0; i < usbvision->num_frames; i++) {
1118 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1119 vma->vm_pgoff)
1120 break;
1121 }
1122 if (i == usbvision->num_frames) {
1123 PDEBUG(DBG_MMAP,
1124 "mmap: user supplied mapping address is out of range");
1125 mutex_unlock(&usbvision->lock);
1126 return -EINVAL;
1127 }
1128
1129 /* VM_IO is eventually going to replace PageReserved altogether */
1130 vma->vm_flags |= VM_IO;
1131 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1132
1133 pos = usbvision->frame[i].data;
1134 while (size > 0) {
1135
1136 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1137 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1138 mutex_unlock(&usbvision->lock);
1139 return -EAGAIN;
1140 }
1141 start += PAGE_SIZE;
1142 pos += PAGE_SIZE;
1143 size -= PAGE_SIZE;
1144 }
1145
1146 mutex_unlock(&usbvision->lock);
1147 return 0;
1148 }
1149
1150
1151 /*
1152 * Here comes the stuff for radio on usbvision based devices
1153 *
1154 */
1155 static int usbvision_radio_open(struct file *file)
1156 {
1157 struct usb_usbvision *usbvision = video_drvdata(file);
1158 int errCode = 0;
1159
1160 PDEBUG(DBG_IO, "%s:", __func__);
1161
1162 mutex_lock(&usbvision->lock);
1163
1164 if (usbvision->user) {
1165 dev_err(&usbvision->rdev->dev,
1166 "%s: Someone tried to open an already opened USBVision Radio!\n",
1167 __func__);
1168 errCode = -EBUSY;
1169 }
1170 else {
1171 if(PowerOnAtOpen) {
1172 usbvision_reset_powerOffTimer(usbvision);
1173 if (usbvision->power == 0) {
1174 usbvision_power_on(usbvision);
1175 usbvision_i2c_register(usbvision);
1176 }
1177 }
1178
1179 /* Alternate interface 1 is is the biggest frame size */
1180 errCode = usbvision_set_alternate(usbvision);
1181 if (errCode < 0) {
1182 usbvision->last_error = errCode;
1183 errCode = -EBUSY;
1184 goto out;
1185 }
1186
1187 // If so far no errors then we shall start the radio
1188 usbvision->radio = 1;
1189 call_all(usbvision, tuner, s_radio);
1190 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1191 usbvision->user++;
1192 }
1193
1194 if (errCode) {
1195 if (PowerOnAtOpen) {
1196 usbvision_i2c_unregister(usbvision);
1197 usbvision_power_off(usbvision);
1198 usbvision->initialized = 0;
1199 }
1200 }
1201 out:
1202 mutex_unlock(&usbvision->lock);
1203 return errCode;
1204 }
1205
1206
1207 static int usbvision_radio_close(struct file *file)
1208 {
1209 struct usb_usbvision *usbvision = video_drvdata(file);
1210 int errCode = 0;
1211
1212 PDEBUG(DBG_IO, "");
1213
1214 mutex_lock(&usbvision->lock);
1215
1216 /* Set packet size to 0 */
1217 usbvision->ifaceAlt=0;
1218 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1219 usbvision->ifaceAlt);
1220
1221 usbvision_audio_off(usbvision);
1222 usbvision->radio=0;
1223 usbvision->user--;
1224
1225 if (PowerOnAtOpen) {
1226 usbvision_set_powerOffTimer(usbvision);
1227 usbvision->initialized = 0;
1228 }
1229
1230 mutex_unlock(&usbvision->lock);
1231
1232 if (usbvision->remove_pending) {
1233 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1234 usbvision_release(usbvision);
1235 }
1236
1237 PDEBUG(DBG_IO, "success");
1238 return errCode;
1239 }
1240
1241 //
1242 // Video registration stuff
1243 //
1244
1245 // Video template
1246 static const struct v4l2_file_operations usbvision_fops = {
1247 .owner = THIS_MODULE,
1248 .open = usbvision_v4l2_open,
1249 .release = usbvision_v4l2_close,
1250 .read = usbvision_v4l2_read,
1251 .mmap = usbvision_v4l2_mmap,
1252 .ioctl = video_ioctl2,
1253 /* .poll = video_poll, */
1254 };
1255
1256 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1257 .vidioc_querycap = vidioc_querycap,
1258 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1259 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1260 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1261 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1262 .vidioc_reqbufs = vidioc_reqbufs,
1263 .vidioc_querybuf = vidioc_querybuf,
1264 .vidioc_qbuf = vidioc_qbuf,
1265 .vidioc_dqbuf = vidioc_dqbuf,
1266 .vidioc_s_std = vidioc_s_std,
1267 .vidioc_enum_input = vidioc_enum_input,
1268 .vidioc_g_input = vidioc_g_input,
1269 .vidioc_s_input = vidioc_s_input,
1270 .vidioc_queryctrl = vidioc_queryctrl,
1271 .vidioc_g_audio = vidioc_g_audio,
1272 .vidioc_s_audio = vidioc_s_audio,
1273 .vidioc_g_ctrl = vidioc_g_ctrl,
1274 .vidioc_s_ctrl = vidioc_s_ctrl,
1275 .vidioc_streamon = vidioc_streamon,
1276 .vidioc_streamoff = vidioc_streamoff,
1277 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1278 /* .vidiocgmbuf = vidiocgmbuf, */
1279 #endif
1280 .vidioc_g_tuner = vidioc_g_tuner,
1281 .vidioc_s_tuner = vidioc_s_tuner,
1282 .vidioc_g_frequency = vidioc_g_frequency,
1283 .vidioc_s_frequency = vidioc_s_frequency,
1284 #ifdef CONFIG_VIDEO_ADV_DEBUG
1285 .vidioc_g_register = vidioc_g_register,
1286 .vidioc_s_register = vidioc_s_register,
1287 #endif
1288 };
1289
1290 static struct video_device usbvision_video_template = {
1291 .fops = &usbvision_fops,
1292 .ioctl_ops = &usbvision_ioctl_ops,
1293 .name = "usbvision-video",
1294 .release = video_device_release,
1295 .tvnorms = USBVISION_NORMS,
1296 .current_norm = V4L2_STD_PAL
1297 };
1298
1299
1300 // Radio template
1301 static const struct v4l2_file_operations usbvision_radio_fops = {
1302 .owner = THIS_MODULE,
1303 .open = usbvision_radio_open,
1304 .release = usbvision_radio_close,
1305 .ioctl = video_ioctl2,
1306 };
1307
1308 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1309 .vidioc_querycap = vidioc_querycap,
1310 .vidioc_enum_input = vidioc_enum_input,
1311 .vidioc_g_input = vidioc_g_input,
1312 .vidioc_s_input = vidioc_s_input,
1313 .vidioc_queryctrl = vidioc_queryctrl,
1314 .vidioc_g_audio = vidioc_g_audio,
1315 .vidioc_s_audio = vidioc_s_audio,
1316 .vidioc_g_ctrl = vidioc_g_ctrl,
1317 .vidioc_s_ctrl = vidioc_s_ctrl,
1318 .vidioc_g_tuner = vidioc_g_tuner,
1319 .vidioc_s_tuner = vidioc_s_tuner,
1320 .vidioc_g_frequency = vidioc_g_frequency,
1321 .vidioc_s_frequency = vidioc_s_frequency,
1322 };
1323
1324 static struct video_device usbvision_radio_template = {
1325 .fops = &usbvision_radio_fops,
1326 .name = "usbvision-radio",
1327 .release = video_device_release,
1328 .ioctl_ops = &usbvision_radio_ioctl_ops,
1329
1330 .tvnorms = USBVISION_NORMS,
1331 .current_norm = V4L2_STD_PAL
1332 };
1333
1334
1335 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1336 struct video_device *vdev_template,
1337 char *name)
1338 {
1339 struct usb_device *usb_dev = usbvision->dev;
1340 struct video_device *vdev;
1341
1342 if (usb_dev == NULL) {
1343 dev_err(&usbvision->dev->dev,
1344 "%s: usbvision->dev is not set\n", __func__);
1345 return NULL;
1346 }
1347
1348 vdev = video_device_alloc();
1349 if (NULL == vdev) {
1350 return NULL;
1351 }
1352 *vdev = *vdev_template;
1353 vdev->v4l2_dev = &usbvision->v4l2_dev;
1354 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1355 video_set_drvdata(vdev, usbvision);
1356 return vdev;
1357 }
1358
1359 // unregister video4linux devices
1360 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1361 {
1362 // Radio Device:
1363 if (usbvision->rdev) {
1364 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1365 video_device_node_name(usbvision->rdev));
1366 if (video_is_registered(usbvision->rdev)) {
1367 video_unregister_device(usbvision->rdev);
1368 } else {
1369 video_device_release(usbvision->rdev);
1370 }
1371 usbvision->rdev = NULL;
1372 }
1373
1374 // Video Device:
1375 if (usbvision->vdev) {
1376 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1377 video_device_node_name(usbvision->vdev));
1378 if (video_is_registered(usbvision->vdev)) {
1379 video_unregister_device(usbvision->vdev);
1380 } else {
1381 video_device_release(usbvision->vdev);
1382 }
1383 usbvision->vdev = NULL;
1384 }
1385 }
1386
1387 // register video4linux devices
1388 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1389 {
1390 // Video Device:
1391 usbvision->vdev = usbvision_vdev_init(usbvision,
1392 &usbvision_video_template,
1393 "USBVision Video");
1394 if (usbvision->vdev == NULL) {
1395 goto err_exit;
1396 }
1397 if (video_register_device(usbvision->vdev,
1398 VFL_TYPE_GRABBER,
1399 video_nr)<0) {
1400 goto err_exit;
1401 }
1402 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1403 usbvision->nr, video_device_node_name(usbvision->vdev));
1404
1405 // Radio Device:
1406 if (usbvision_device_data[usbvision->DevModel].Radio) {
1407 // usbvision has radio
1408 usbvision->rdev = usbvision_vdev_init(usbvision,
1409 &usbvision_radio_template,
1410 "USBVision Radio");
1411 if (usbvision->rdev == NULL) {
1412 goto err_exit;
1413 }
1414 if (video_register_device(usbvision->rdev,
1415 VFL_TYPE_RADIO,
1416 radio_nr)<0) {
1417 goto err_exit;
1418 }
1419 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1420 usbvision->nr, video_device_node_name(usbvision->rdev));
1421 }
1422 // all done
1423 return 0;
1424
1425 err_exit:
1426 dev_err(&usbvision->dev->dev,
1427 "USBVision[%d]: video_register_device() failed\n",
1428 usbvision->nr);
1429 usbvision_unregister_video(usbvision);
1430 return -1;
1431 }
1432
1433 /*
1434 * usbvision_alloc()
1435 *
1436 * This code allocates the struct usb_usbvision.
1437 * It is filled with default values.
1438 *
1439 * Returns NULL on error, a pointer to usb_usbvision else.
1440 *
1441 */
1442 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1443 struct usb_interface *intf)
1444 {
1445 struct usb_usbvision *usbvision;
1446
1447 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1448 if (usbvision == NULL)
1449 return NULL;
1450
1451 usbvision->dev = dev;
1452 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1453 goto err_free;
1454
1455 mutex_init(&usbvision->lock); /* available */
1456
1457 // prepare control urb for control messages during interrupts
1458 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1459 if (usbvision->ctrlUrb == NULL)
1460 goto err_unreg;
1461 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1462
1463 usbvision_init_powerOffTimer(usbvision);
1464
1465 return usbvision;
1466
1467 err_unreg:
1468 v4l2_device_unregister(&usbvision->v4l2_dev);
1469 err_free:
1470 kfree(usbvision);
1471 return NULL;
1472 }
1473
1474 /*
1475 * usbvision_release()
1476 *
1477 * This code does final release of struct usb_usbvision. This happens
1478 * after the device is disconnected -and- all clients closed their files.
1479 *
1480 */
1481 static void usbvision_release(struct usb_usbvision *usbvision)
1482 {
1483 PDEBUG(DBG_PROBE, "");
1484
1485 mutex_lock(&usbvision->lock);
1486
1487 usbvision_reset_powerOffTimer(usbvision);
1488
1489 usbvision->initialized = 0;
1490
1491 mutex_unlock(&usbvision->lock);
1492
1493 usbvision_remove_sysfs(usbvision->vdev);
1494 usbvision_unregister_video(usbvision);
1495
1496 if (usbvision->ctrlUrb) {
1497 usb_free_urb(usbvision->ctrlUrb);
1498 }
1499
1500 v4l2_device_unregister(&usbvision->v4l2_dev);
1501 kfree(usbvision);
1502
1503 PDEBUG(DBG_PROBE, "success");
1504 }
1505
1506
1507 /*********************** usb interface **********************************/
1508
1509 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1510 {
1511 int model;
1512
1513 if (usbvision == NULL)
1514 return;
1515
1516 model = usbvision->DevModel;
1517 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1518
1519 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1520 usbvision->Vin_Reg2_Preset =
1521 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1522 } else {
1523 usbvision->Vin_Reg2_Preset = 0;
1524 }
1525
1526 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1527
1528 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1529 usbvision->ctl_input = 0;
1530
1531 /* This should be here to make i2c clients to be able to register */
1532 /* first switch off audio */
1533 usbvision_audio_off(usbvision);
1534 if (!PowerOnAtOpen) {
1535 /* and then power up the noisy tuner */
1536 usbvision_power_on(usbvision);
1537 usbvision_i2c_register(usbvision);
1538 }
1539 }
1540
1541 /*
1542 * usbvision_probe()
1543 *
1544 * This procedure queries device descriptor and accepts the interface
1545 * if it looks like USBVISION video device
1546 *
1547 */
1548 static int __devinit usbvision_probe(struct usb_interface *intf,
1549 const struct usb_device_id *devid)
1550 {
1551 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1552 struct usb_interface *uif;
1553 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1554 const struct usb_host_interface *interface;
1555 struct usb_usbvision *usbvision = NULL;
1556 const struct usb_endpoint_descriptor *endpoint;
1557 int model,i;
1558
1559 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1560 dev->descriptor.idVendor,
1561 dev->descriptor.idProduct, ifnum);
1562
1563 model = devid->driver_info;
1564 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1565 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1566 return -ENODEV;
1567 }
1568 printk(KERN_INFO "%s: %s found\n", __func__,
1569 usbvision_device_data[model].ModelString);
1570
1571 if (usbvision_device_data[model].Interface >= 0) {
1572 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1573 } else {
1574 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1575 }
1576 endpoint = &interface->endpoint[1].desc;
1577 if (!usb_endpoint_xfer_isoc(endpoint)) {
1578 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1579 __func__, ifnum);
1580 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1581 __func__, endpoint->bmAttributes);
1582 return -ENODEV;
1583 }
1584 if (usb_endpoint_dir_out(endpoint)) {
1585 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1586 __func__, ifnum);
1587 return -ENODEV;
1588 }
1589
1590 usbvision = usbvision_alloc(dev, intf);
1591 if (usbvision == NULL) {
1592 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1593 return -ENOMEM;
1594 }
1595
1596 if (dev->descriptor.bNumConfigurations > 1) {
1597 usbvision->bridgeType = BRIDGE_NT1004;
1598 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1599 usbvision->bridgeType = BRIDGE_NT1005;
1600 } else {
1601 usbvision->bridgeType = BRIDGE_NT1003;
1602 }
1603 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1604
1605 mutex_lock(&usbvision->lock);
1606
1607 /* compute alternate max packet sizes */
1608 uif = dev->actconfig->interface[0];
1609
1610 usbvision->num_alt=uif->num_altsetting;
1611 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1612 usbvision->alt_max_pkt_size = kmalloc(32*
1613 usbvision->num_alt,GFP_KERNEL);
1614 if (usbvision->alt_max_pkt_size == NULL) {
1615 dev_err(&intf->dev, "usbvision: out of memory!\n");
1616 mutex_unlock(&usbvision->lock);
1617 return -ENOMEM;
1618 }
1619
1620 for (i = 0; i < usbvision->num_alt ; i++) {
1621 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1622 wMaxPacketSize);
1623 usbvision->alt_max_pkt_size[i] =
1624 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1625 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1626 usbvision->alt_max_pkt_size[i]);
1627 }
1628
1629
1630 usbvision->nr = usbvision_nr++;
1631
1632 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1633 if (usbvision->have_tuner) {
1634 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1635 }
1636
1637 usbvision->DevModel = model;
1638 usbvision->remove_pending = 0;
1639 usbvision->iface = ifnum;
1640 usbvision->ifaceAlt = 0;
1641 usbvision->video_endp = endpoint->bEndpointAddress;
1642 usbvision->isocPacketSize = 0;
1643 usbvision->usb_bandwidth = 0;
1644 usbvision->user = 0;
1645 usbvision->streaming = Stream_Off;
1646 usbvision_configure_video(usbvision);
1647 usbvision_register_video(usbvision);
1648 mutex_unlock(&usbvision->lock);
1649
1650 usbvision_create_sysfs(usbvision->vdev);
1651
1652 PDEBUG(DBG_PROBE, "success");
1653 return 0;
1654 }
1655
1656
1657 /*
1658 * usbvision_disconnect()
1659 *
1660 * This procedure stops all driver activity, deallocates interface-private
1661 * structure (pointed by 'ptr') and after that driver should be removable
1662 * with no ill consequences.
1663 *
1664 */
1665 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1666 {
1667 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1668
1669 PDEBUG(DBG_PROBE, "");
1670
1671 if (usbvision == NULL) {
1672 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1673 return;
1674 }
1675
1676 mutex_lock(&usbvision->lock);
1677
1678 // At this time we ask to cancel outstanding URBs
1679 usbvision_stop_isoc(usbvision);
1680
1681 v4l2_device_disconnect(&usbvision->v4l2_dev);
1682
1683 if (usbvision->power) {
1684 usbvision_i2c_unregister(usbvision);
1685 usbvision_power_off(usbvision);
1686 }
1687 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1688
1689 usb_put_dev(usbvision->dev);
1690 usbvision->dev = NULL; // USB device is no more
1691
1692 mutex_unlock(&usbvision->lock);
1693
1694 if (usbvision->user) {
1695 printk(KERN_INFO "%s: In use, disconnect pending\n",
1696 __func__);
1697 wake_up_interruptible(&usbvision->wait_frame);
1698 wake_up_interruptible(&usbvision->wait_stream);
1699 } else {
1700 usbvision_release(usbvision);
1701 }
1702
1703 PDEBUG(DBG_PROBE, "success");
1704 }
1705
1706 static struct usb_driver usbvision_driver = {
1707 .name = "usbvision",
1708 .id_table = usbvision_table,
1709 .probe = usbvision_probe,
1710 .disconnect = __devexit_p(usbvision_disconnect),
1711 };
1712
1713 /*
1714 * usbvision_init()
1715 *
1716 * This code is run to initialize the driver.
1717 *
1718 */
1719 static int __init usbvision_init(void)
1720 {
1721 int errCode;
1722
1723 PDEBUG(DBG_PROBE, "");
1724
1725 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1726 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1727 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1728
1729 /* disable planar mode support unless compression enabled */
1730 if (isocMode != ISOC_MODE_COMPRESS ) {
1731 // FIXME : not the right way to set supported flag
1732 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1733 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1734 }
1735
1736 errCode = usb_register(&usbvision_driver);
1737
1738 if (errCode == 0) {
1739 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1740 PDEBUG(DBG_PROBE, "success");
1741 }
1742 return errCode;
1743 }
1744
1745 static void __exit usbvision_exit(void)
1746 {
1747 PDEBUG(DBG_PROBE, "");
1748
1749 usb_deregister(&usbvision_driver);
1750 PDEBUG(DBG_PROBE, "success");
1751 }
1752
1753 module_init(usbvision_init);
1754 module_exit(usbvision_exit);
1755
1756 /*
1757 * Overrides for Emacs so that we follow Linus's tabbing style.
1758 * ---------------------------------------------------------------------------
1759 * Local variables:
1760 * c-basic-offset: 8
1761 * End:
1762 */
Linux kernel - Deliverables
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