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virtio_net: Check for room in the vq before adding buffer
[GitHub/mt8127/android_kernel_alcatel_ttab.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/utsname.h>
56 #include <linux/highmem.h>
57 #include <linux/vmalloc.h>
58 #include <linux/module.h>
59 #include <linux/init.h>
60 #include <linux/spinlock.h>
61 #include <asm/io.h>
62 #include <linux/videodev2.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 10
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)
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, core, 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 if(usbvision->radio) {
702 strcpy(a->name,"Radio");
703 } else {
704 strcpy(a->name, "TV");
705 }
706
707 return 0;
708 }
709
710 static int vidioc_s_audio (struct file *file, void *fh,
711 struct v4l2_audio *a)
712 {
713 if(a->index) {
714 return -EINVAL;
715 }
716
717 return 0;
718 }
719
720 static int vidioc_queryctrl (struct file *file, void *priv,
721 struct v4l2_queryctrl *ctrl)
722 {
723 struct usb_usbvision *usbvision = video_drvdata(file);
724
725 call_all(usbvision, core, queryctrl, ctrl);
726
727 if (!ctrl->type)
728 return -EINVAL;
729
730 return 0;
731 }
732
733 static int vidioc_g_ctrl (struct file *file, void *priv,
734 struct v4l2_control *ctrl)
735 {
736 struct usb_usbvision *usbvision = video_drvdata(file);
737 call_all(usbvision, core, g_ctrl, ctrl);
738
739 return 0;
740 }
741
742 static int vidioc_s_ctrl (struct file *file, void *priv,
743 struct v4l2_control *ctrl)
744 {
745 struct usb_usbvision *usbvision = video_drvdata(file);
746 call_all(usbvision, core, s_ctrl, ctrl);
747
748 return 0;
749 }
750
751 static int vidioc_reqbufs (struct file *file,
752 void *priv, struct v4l2_requestbuffers *vr)
753 {
754 struct usb_usbvision *usbvision = video_drvdata(file);
755 int ret;
756
757 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
758
759 /* Check input validity:
760 the user must do a VIDEO CAPTURE and MMAP method. */
761 if (vr->memory != V4L2_MEMORY_MMAP)
762 return -EINVAL;
763
764 if(usbvision->streaming == Stream_On) {
765 if ((ret = usbvision_stream_interrupt(usbvision)))
766 return ret;
767 }
768
769 usbvision_frames_free(usbvision);
770 usbvision_empty_framequeues(usbvision);
771 vr->count = usbvision_frames_alloc(usbvision,vr->count);
772
773 usbvision->curFrame = NULL;
774
775 return 0;
776 }
777
778 static int vidioc_querybuf (struct file *file,
779 void *priv, struct v4l2_buffer *vb)
780 {
781 struct usb_usbvision *usbvision = video_drvdata(file);
782 struct usbvision_frame *frame;
783
784 /* FIXME : must control
785 that buffers are mapped (VIDIOC_REQBUFS has been called) */
786 if(vb->index>=usbvision->num_frames) {
787 return -EINVAL;
788 }
789 /* Updating the corresponding frame state */
790 vb->flags = 0;
791 frame = &usbvision->frame[vb->index];
792 if(frame->grabstate >= FrameState_Ready)
793 vb->flags |= V4L2_BUF_FLAG_QUEUED;
794 if(frame->grabstate >= FrameState_Done)
795 vb->flags |= V4L2_BUF_FLAG_DONE;
796 if(frame->grabstate == FrameState_Unused)
797 vb->flags |= V4L2_BUF_FLAG_MAPPED;
798 vb->memory = V4L2_MEMORY_MMAP;
799
800 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
801
802 vb->memory = V4L2_MEMORY_MMAP;
803 vb->field = V4L2_FIELD_NONE;
804 vb->length = usbvision->curwidth*
805 usbvision->curheight*
806 usbvision->palette.bytes_per_pixel;
807 vb->timestamp = usbvision->frame[vb->index].timestamp;
808 vb->sequence = usbvision->frame[vb->index].sequence;
809 return 0;
810 }
811
812 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
813 {
814 struct usb_usbvision *usbvision = video_drvdata(file);
815 struct usbvision_frame *frame;
816 unsigned long lock_flags;
817
818 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
819 if(vb->index>=usbvision->num_frames) {
820 return -EINVAL;
821 }
822
823 frame = &usbvision->frame[vb->index];
824
825 if (frame->grabstate != FrameState_Unused) {
826 return -EAGAIN;
827 }
828
829 /* Mark it as ready and enqueue frame */
830 frame->grabstate = FrameState_Ready;
831 frame->scanstate = ScanState_Scanning;
832 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
833
834 vb->flags &= ~V4L2_BUF_FLAG_DONE;
835
836 /* set v4l2_format index */
837 frame->v4l2_format = usbvision->palette;
838
839 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
840 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
841 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
842
843 return 0;
844 }
845
846 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
847 {
848 struct usb_usbvision *usbvision = video_drvdata(file);
849 int ret;
850 struct usbvision_frame *f;
851 unsigned long lock_flags;
852
853 if (list_empty(&(usbvision->outqueue))) {
854 if (usbvision->streaming == Stream_Idle)
855 return -EINVAL;
856 ret = wait_event_interruptible
857 (usbvision->wait_frame,
858 !list_empty(&(usbvision->outqueue)));
859 if (ret)
860 return ret;
861 }
862
863 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
864 f = list_entry(usbvision->outqueue.next,
865 struct usbvision_frame, frame);
866 list_del(usbvision->outqueue.next);
867 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
868
869 f->grabstate = FrameState_Unused;
870
871 vb->memory = V4L2_MEMORY_MMAP;
872 vb->flags = V4L2_BUF_FLAG_MAPPED |
873 V4L2_BUF_FLAG_QUEUED |
874 V4L2_BUF_FLAG_DONE;
875 vb->index = f->index;
876 vb->sequence = f->sequence;
877 vb->timestamp = f->timestamp;
878 vb->field = V4L2_FIELD_NONE;
879 vb->bytesused = f->scanlength;
880
881 return 0;
882 }
883
884 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
885 {
886 struct usb_usbvision *usbvision = video_drvdata(file);
887
888 usbvision->streaming = Stream_On;
889 call_all(usbvision, video, s_stream, 1);
890
891 return 0;
892 }
893
894 static int vidioc_streamoff(struct file *file,
895 void *priv, enum v4l2_buf_type type)
896 {
897 struct usb_usbvision *usbvision = video_drvdata(file);
898
899 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
900 return -EINVAL;
901
902 if(usbvision->streaming == Stream_On) {
903 usbvision_stream_interrupt(usbvision);
904 /* Stop all video streamings */
905 call_all(usbvision, video, s_stream, 0);
906 }
907 usbvision_empty_framequeues(usbvision);
908
909 return 0;
910 }
911
912 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
913 struct v4l2_fmtdesc *vfd)
914 {
915 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
916 return -EINVAL;
917 }
918 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
919 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
920 return 0;
921 }
922
923 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
924 struct v4l2_format *vf)
925 {
926 struct usb_usbvision *usbvision = video_drvdata(file);
927 vf->fmt.pix.width = usbvision->curwidth;
928 vf->fmt.pix.height = usbvision->curheight;
929 vf->fmt.pix.pixelformat = usbvision->palette.format;
930 vf->fmt.pix.bytesperline =
931 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
932 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
933 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
934 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
935
936 return 0;
937 }
938
939 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
940 struct v4l2_format *vf)
941 {
942 struct usb_usbvision *usbvision = video_drvdata(file);
943 int formatIdx;
944
945 /* Find requested format in available ones */
946 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
947 if(vf->fmt.pix.pixelformat ==
948 usbvision_v4l2_format[formatIdx].format) {
949 usbvision->palette = usbvision_v4l2_format[formatIdx];
950 break;
951 }
952 }
953 /* robustness */
954 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
955 return -EINVAL;
956 }
957 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
958 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
959
960 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
961 usbvision->palette.bytes_per_pixel;
962 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
963
964 return 0;
965 }
966
967 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
968 struct v4l2_format *vf)
969 {
970 struct usb_usbvision *usbvision = video_drvdata(file);
971 int ret;
972
973 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
974 return ret;
975 }
976
977 /* stop io in case it is already in progress */
978 if(usbvision->streaming == Stream_On) {
979 if ((ret = usbvision_stream_interrupt(usbvision)))
980 return ret;
981 }
982 usbvision_frames_free(usbvision);
983 usbvision_empty_framequeues(usbvision);
984
985 usbvision->curFrame = NULL;
986
987 /* by now we are committed to the new data... */
988 mutex_lock(&usbvision->lock);
989 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
990 mutex_unlock(&usbvision->lock);
991
992 return 0;
993 }
994
995 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
996 size_t count, loff_t *ppos)
997 {
998 struct usb_usbvision *usbvision = video_drvdata(file);
999 int noblock = file->f_flags & O_NONBLOCK;
1000 unsigned long lock_flags;
1001
1002 int ret,i;
1003 struct usbvision_frame *frame;
1004
1005 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1006 (unsigned long)count, noblock);
1007
1008 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1009 return -EFAULT;
1010
1011 /* This entry point is compatible with the mmap routines
1012 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1013 to get frames or call read on the device. */
1014 if(!usbvision->num_frames) {
1015 /* First, allocate some frames to work with
1016 if this has not been done with VIDIOC_REQBUF */
1017 usbvision_frames_free(usbvision);
1018 usbvision_empty_framequeues(usbvision);
1019 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1020 }
1021
1022 if(usbvision->streaming != Stream_On) {
1023 /* no stream is running, make it running ! */
1024 usbvision->streaming = Stream_On;
1025 call_all(usbvision, video, s_stream, 1);
1026 }
1027
1028 /* Then, enqueue as many frames as possible
1029 (like a user of VIDIOC_QBUF would do) */
1030 for(i=0;i<usbvision->num_frames;i++) {
1031 frame = &usbvision->frame[i];
1032 if(frame->grabstate == FrameState_Unused) {
1033 /* Mark it as ready and enqueue frame */
1034 frame->grabstate = FrameState_Ready;
1035 frame->scanstate = ScanState_Scanning;
1036 /* Accumulated in usbvision_parse_data() */
1037 frame->scanlength = 0;
1038
1039 /* set v4l2_format index */
1040 frame->v4l2_format = usbvision->palette;
1041
1042 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1043 list_add_tail(&frame->frame, &usbvision->inqueue);
1044 spin_unlock_irqrestore(&usbvision->queue_lock,
1045 lock_flags);
1046 }
1047 }
1048
1049 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1050 if (list_empty(&(usbvision->outqueue))) {
1051 if(noblock)
1052 return -EAGAIN;
1053
1054 ret = wait_event_interruptible
1055 (usbvision->wait_frame,
1056 !list_empty(&(usbvision->outqueue)));
1057 if (ret)
1058 return ret;
1059 }
1060
1061 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1062 frame = list_entry(usbvision->outqueue.next,
1063 struct usbvision_frame, frame);
1064 list_del(usbvision->outqueue.next);
1065 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1066
1067 /* An error returns an empty frame */
1068 if (frame->grabstate == FrameState_Error) {
1069 frame->bytes_read = 0;
1070 return 0;
1071 }
1072
1073 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1074 __func__,
1075 frame->index, frame->bytes_read, frame->scanlength);
1076
1077 /* copy bytes to user space; we allow for partials reads */
1078 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1079 count = frame->scanlength - frame->bytes_read;
1080
1081 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1082 return -EFAULT;
1083 }
1084
1085 frame->bytes_read += count;
1086 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1087 __func__,
1088 (unsigned long)count, frame->bytes_read);
1089
1090 /* For now, forget the frame if it has not been read in one shot. */
1091 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1092 frame->bytes_read = 0;
1093
1094 /* Mark it as available to be used again. */
1095 frame->grabstate = FrameState_Unused;
1096 /* } */
1097
1098 return count;
1099 }
1100
1101 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1102 {
1103 unsigned long size = vma->vm_end - vma->vm_start,
1104 start = vma->vm_start;
1105 void *pos;
1106 u32 i;
1107 struct usb_usbvision *usbvision = video_drvdata(file);
1108
1109 PDEBUG(DBG_MMAP, "mmap");
1110
1111 mutex_lock(&usbvision->lock);
1112
1113 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1114 mutex_unlock(&usbvision->lock);
1115 return -EFAULT;
1116 }
1117
1118 if (!(vma->vm_flags & VM_WRITE) ||
1119 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1120 mutex_unlock(&usbvision->lock);
1121 return -EINVAL;
1122 }
1123
1124 for (i = 0; i < usbvision->num_frames; i++) {
1125 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1126 vma->vm_pgoff)
1127 break;
1128 }
1129 if (i == usbvision->num_frames) {
1130 PDEBUG(DBG_MMAP,
1131 "mmap: user supplied mapping address is out of range");
1132 mutex_unlock(&usbvision->lock);
1133 return -EINVAL;
1134 }
1135
1136 /* VM_IO is eventually going to replace PageReserved altogether */
1137 vma->vm_flags |= VM_IO;
1138 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1139
1140 pos = usbvision->frame[i].data;
1141 while (size > 0) {
1142
1143 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1144 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1145 mutex_unlock(&usbvision->lock);
1146 return -EAGAIN;
1147 }
1148 start += PAGE_SIZE;
1149 pos += PAGE_SIZE;
1150 size -= PAGE_SIZE;
1151 }
1152
1153 mutex_unlock(&usbvision->lock);
1154 return 0;
1155 }
1156
1157
1158 /*
1159 * Here comes the stuff for radio on usbvision based devices
1160 *
1161 */
1162 static int usbvision_radio_open(struct file *file)
1163 {
1164 struct usb_usbvision *usbvision = video_drvdata(file);
1165 int errCode = 0;
1166
1167 PDEBUG(DBG_IO, "%s:", __func__);
1168
1169 mutex_lock(&usbvision->lock);
1170
1171 if (usbvision->user) {
1172 dev_err(&usbvision->rdev->dev,
1173 "%s: Someone tried to open an already opened USBVision Radio!\n",
1174 __func__);
1175 errCode = -EBUSY;
1176 }
1177 else {
1178 if(PowerOnAtOpen) {
1179 usbvision_reset_powerOffTimer(usbvision);
1180 if (usbvision->power == 0) {
1181 usbvision_power_on(usbvision);
1182 usbvision_i2c_register(usbvision);
1183 }
1184 }
1185
1186 /* Alternate interface 1 is is the biggest frame size */
1187 errCode = usbvision_set_alternate(usbvision);
1188 if (errCode < 0) {
1189 usbvision->last_error = errCode;
1190 errCode = -EBUSY;
1191 goto out;
1192 }
1193
1194 // If so far no errors then we shall start the radio
1195 usbvision->radio = 1;
1196 call_all(usbvision, tuner, s_radio);
1197 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1198 usbvision->user++;
1199 }
1200
1201 if (errCode) {
1202 if (PowerOnAtOpen) {
1203 usbvision_i2c_unregister(usbvision);
1204 usbvision_power_off(usbvision);
1205 usbvision->initialized = 0;
1206 }
1207 }
1208 out:
1209 mutex_unlock(&usbvision->lock);
1210 return errCode;
1211 }
1212
1213
1214 static int usbvision_radio_close(struct file *file)
1215 {
1216 struct usb_usbvision *usbvision = video_drvdata(file);
1217 int errCode = 0;
1218
1219 PDEBUG(DBG_IO, "");
1220
1221 mutex_lock(&usbvision->lock);
1222
1223 /* Set packet size to 0 */
1224 usbvision->ifaceAlt=0;
1225 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1226 usbvision->ifaceAlt);
1227
1228 usbvision_audio_off(usbvision);
1229 usbvision->radio=0;
1230 usbvision->user--;
1231
1232 if (PowerOnAtOpen) {
1233 usbvision_set_powerOffTimer(usbvision);
1234 usbvision->initialized = 0;
1235 }
1236
1237 mutex_unlock(&usbvision->lock);
1238
1239 if (usbvision->remove_pending) {
1240 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1241 usbvision_release(usbvision);
1242 }
1243
1244 PDEBUG(DBG_IO, "success");
1245 return errCode;
1246 }
1247
1248 /*
1249 * Here comes the stuff for vbi on usbvision based devices
1250 *
1251 */
1252 static int usbvision_vbi_open(struct file *file)
1253 {
1254 /* TODO */
1255 return -ENODEV;
1256 }
1257
1258 static int usbvision_vbi_close(struct file *file)
1259 {
1260 /* TODO */
1261 return -ENODEV;
1262 }
1263
1264 static long usbvision_do_vbi_ioctl(struct file *file,
1265 unsigned int cmd, void *arg)
1266 {
1267 /* TODO */
1268 return -ENOIOCTLCMD;
1269 }
1270
1271 static long usbvision_vbi_ioctl(struct file *file,
1272 unsigned int cmd, unsigned long arg)
1273 {
1274 return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1275 }
1276
1277
1278 //
1279 // Video registration stuff
1280 //
1281
1282 // Video template
1283 static const struct v4l2_file_operations usbvision_fops = {
1284 .owner = THIS_MODULE,
1285 .open = usbvision_v4l2_open,
1286 .release = usbvision_v4l2_close,
1287 .read = usbvision_v4l2_read,
1288 .mmap = usbvision_v4l2_mmap,
1289 .ioctl = video_ioctl2,
1290 /* .poll = video_poll, */
1291 };
1292
1293 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1294 .vidioc_querycap = vidioc_querycap,
1295 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1296 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1297 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1298 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1299 .vidioc_reqbufs = vidioc_reqbufs,
1300 .vidioc_querybuf = vidioc_querybuf,
1301 .vidioc_qbuf = vidioc_qbuf,
1302 .vidioc_dqbuf = vidioc_dqbuf,
1303 .vidioc_s_std = vidioc_s_std,
1304 .vidioc_enum_input = vidioc_enum_input,
1305 .vidioc_g_input = vidioc_g_input,
1306 .vidioc_s_input = vidioc_s_input,
1307 .vidioc_queryctrl = vidioc_queryctrl,
1308 .vidioc_g_audio = vidioc_g_audio,
1309 .vidioc_s_audio = vidioc_s_audio,
1310 .vidioc_g_ctrl = vidioc_g_ctrl,
1311 .vidioc_s_ctrl = vidioc_s_ctrl,
1312 .vidioc_streamon = vidioc_streamon,
1313 .vidioc_streamoff = vidioc_streamoff,
1314 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1315 /* .vidiocgmbuf = vidiocgmbuf, */
1316 #endif
1317 .vidioc_g_tuner = vidioc_g_tuner,
1318 .vidioc_s_tuner = vidioc_s_tuner,
1319 .vidioc_g_frequency = vidioc_g_frequency,
1320 .vidioc_s_frequency = vidioc_s_frequency,
1321 #ifdef CONFIG_VIDEO_ADV_DEBUG
1322 .vidioc_g_register = vidioc_g_register,
1323 .vidioc_s_register = vidioc_s_register,
1324 #endif
1325 };
1326
1327 static struct video_device usbvision_video_template = {
1328 .fops = &usbvision_fops,
1329 .ioctl_ops = &usbvision_ioctl_ops,
1330 .name = "usbvision-video",
1331 .release = video_device_release,
1332 .minor = -1,
1333 .tvnorms = USBVISION_NORMS,
1334 .current_norm = V4L2_STD_PAL
1335 };
1336
1337
1338 // Radio template
1339 static const struct v4l2_file_operations usbvision_radio_fops = {
1340 .owner = THIS_MODULE,
1341 .open = usbvision_radio_open,
1342 .release = usbvision_radio_close,
1343 .ioctl = video_ioctl2,
1344 };
1345
1346 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1347 .vidioc_querycap = vidioc_querycap,
1348 .vidioc_enum_input = vidioc_enum_input,
1349 .vidioc_g_input = vidioc_g_input,
1350 .vidioc_s_input = vidioc_s_input,
1351 .vidioc_queryctrl = vidioc_queryctrl,
1352 .vidioc_g_audio = vidioc_g_audio,
1353 .vidioc_s_audio = vidioc_s_audio,
1354 .vidioc_g_ctrl = vidioc_g_ctrl,
1355 .vidioc_s_ctrl = vidioc_s_ctrl,
1356 .vidioc_g_tuner = vidioc_g_tuner,
1357 .vidioc_s_tuner = vidioc_s_tuner,
1358 .vidioc_g_frequency = vidioc_g_frequency,
1359 .vidioc_s_frequency = vidioc_s_frequency,
1360 };
1361
1362 static struct video_device usbvision_radio_template = {
1363 .fops = &usbvision_radio_fops,
1364 .name = "usbvision-radio",
1365 .release = video_device_release,
1366 .minor = -1,
1367 .ioctl_ops = &usbvision_radio_ioctl_ops,
1368
1369 .tvnorms = USBVISION_NORMS,
1370 .current_norm = V4L2_STD_PAL
1371 };
1372
1373 // vbi template
1374 static const struct v4l2_file_operations usbvision_vbi_fops = {
1375 .owner = THIS_MODULE,
1376 .open = usbvision_vbi_open,
1377 .release = usbvision_vbi_close,
1378 .ioctl = usbvision_vbi_ioctl,
1379 };
1380
1381 static struct video_device usbvision_vbi_template=
1382 {
1383 .fops = &usbvision_vbi_fops,
1384 .release = video_device_release,
1385 .name = "usbvision-vbi",
1386 .minor = -1,
1387 };
1388
1389
1390 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1391 struct video_device *vdev_template,
1392 char *name)
1393 {
1394 struct usb_device *usb_dev = usbvision->dev;
1395 struct video_device *vdev;
1396
1397 if (usb_dev == NULL) {
1398 dev_err(&usbvision->dev->dev,
1399 "%s: usbvision->dev is not set\n", __func__);
1400 return NULL;
1401 }
1402
1403 vdev = video_device_alloc();
1404 if (NULL == vdev) {
1405 return NULL;
1406 }
1407 *vdev = *vdev_template;
1408 // vdev->minor = -1;
1409 vdev->v4l2_dev = &usbvision->v4l2_dev;
1410 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1411 video_set_drvdata(vdev, usbvision);
1412 return vdev;
1413 }
1414
1415 // unregister video4linux devices
1416 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1417 {
1418 // vbi Device:
1419 if (usbvision->vbi) {
1420 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1421 usbvision->vbi->num);
1422 if (usbvision->vbi->minor != -1) {
1423 video_unregister_device(usbvision->vbi);
1424 } else {
1425 video_device_release(usbvision->vbi);
1426 }
1427 usbvision->vbi = NULL;
1428 }
1429
1430 // Radio Device:
1431 if (usbvision->rdev) {
1432 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1433 usbvision->rdev->num);
1434 if (usbvision->rdev->minor != -1) {
1435 video_unregister_device(usbvision->rdev);
1436 } else {
1437 video_device_release(usbvision->rdev);
1438 }
1439 usbvision->rdev = NULL;
1440 }
1441
1442 // Video Device:
1443 if (usbvision->vdev) {
1444 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1445 usbvision->vdev->num);
1446 if (usbvision->vdev->minor != -1) {
1447 video_unregister_device(usbvision->vdev);
1448 } else {
1449 video_device_release(usbvision->vdev);
1450 }
1451 usbvision->vdev = NULL;
1452 }
1453 }
1454
1455 // register video4linux devices
1456 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1457 {
1458 // Video Device:
1459 usbvision->vdev = usbvision_vdev_init(usbvision,
1460 &usbvision_video_template,
1461 "USBVision Video");
1462 if (usbvision->vdev == NULL) {
1463 goto err_exit;
1464 }
1465 if (video_register_device(usbvision->vdev,
1466 VFL_TYPE_GRABBER,
1467 video_nr)<0) {
1468 goto err_exit;
1469 }
1470 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1471 usbvision->nr, usbvision->vdev->num);
1472
1473 // Radio Device:
1474 if (usbvision_device_data[usbvision->DevModel].Radio) {
1475 // usbvision has radio
1476 usbvision->rdev = usbvision_vdev_init(usbvision,
1477 &usbvision_radio_template,
1478 "USBVision Radio");
1479 if (usbvision->rdev == NULL) {
1480 goto err_exit;
1481 }
1482 if (video_register_device(usbvision->rdev,
1483 VFL_TYPE_RADIO,
1484 radio_nr)<0) {
1485 goto err_exit;
1486 }
1487 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1488 usbvision->nr, usbvision->rdev->num);
1489 }
1490 // vbi Device:
1491 if (usbvision_device_data[usbvision->DevModel].vbi) {
1492 usbvision->vbi = usbvision_vdev_init(usbvision,
1493 &usbvision_vbi_template,
1494 "USBVision VBI");
1495 if (usbvision->vdev == NULL) {
1496 goto err_exit;
1497 }
1498 if (video_register_device(usbvision->vbi,
1499 VFL_TYPE_VBI,
1500 vbi_nr)<0) {
1501 goto err_exit;
1502 }
1503 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1504 usbvision->nr, usbvision->vbi->num);
1505 }
1506 // all done
1507 return 0;
1508
1509 err_exit:
1510 dev_err(&usbvision->dev->dev,
1511 "USBVision[%d]: video_register_device() failed\n",
1512 usbvision->nr);
1513 usbvision_unregister_video(usbvision);
1514 return -1;
1515 }
1516
1517 /*
1518 * usbvision_alloc()
1519 *
1520 * This code allocates the struct usb_usbvision.
1521 * It is filled with default values.
1522 *
1523 * Returns NULL on error, a pointer to usb_usbvision else.
1524 *
1525 */
1526 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1527 struct usb_interface *intf)
1528 {
1529 struct usb_usbvision *usbvision;
1530
1531 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1532 if (usbvision == NULL)
1533 return NULL;
1534
1535 usbvision->dev = dev;
1536 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1537 goto err_free;
1538
1539 mutex_init(&usbvision->lock); /* available */
1540
1541 // prepare control urb for control messages during interrupts
1542 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1543 if (usbvision->ctrlUrb == NULL)
1544 goto err_unreg;
1545 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1546
1547 usbvision_init_powerOffTimer(usbvision);
1548
1549 return usbvision;
1550
1551 err_unreg:
1552 v4l2_device_unregister(&usbvision->v4l2_dev);
1553 err_free:
1554 kfree(usbvision);
1555 return NULL;
1556 }
1557
1558 /*
1559 * usbvision_release()
1560 *
1561 * This code does final release of struct usb_usbvision. This happens
1562 * after the device is disconnected -and- all clients closed their files.
1563 *
1564 */
1565 static void usbvision_release(struct usb_usbvision *usbvision)
1566 {
1567 PDEBUG(DBG_PROBE, "");
1568
1569 mutex_lock(&usbvision->lock);
1570
1571 usbvision_reset_powerOffTimer(usbvision);
1572
1573 usbvision->initialized = 0;
1574
1575 mutex_unlock(&usbvision->lock);
1576
1577 usbvision_remove_sysfs(usbvision->vdev);
1578 usbvision_unregister_video(usbvision);
1579
1580 if (usbvision->ctrlUrb) {
1581 usb_free_urb(usbvision->ctrlUrb);
1582 }
1583
1584 v4l2_device_unregister(&usbvision->v4l2_dev);
1585 kfree(usbvision);
1586
1587 PDEBUG(DBG_PROBE, "success");
1588 }
1589
1590
1591 /*********************** usb interface **********************************/
1592
1593 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1594 {
1595 int model;
1596
1597 if (usbvision == NULL)
1598 return;
1599
1600 model = usbvision->DevModel;
1601 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1602
1603 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1604 usbvision->Vin_Reg2_Preset =
1605 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1606 } else {
1607 usbvision->Vin_Reg2_Preset = 0;
1608 }
1609
1610 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1611
1612 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1613 usbvision->ctl_input = 0;
1614
1615 /* This should be here to make i2c clients to be able to register */
1616 /* first switch off audio */
1617 usbvision_audio_off(usbvision);
1618 if (!PowerOnAtOpen) {
1619 /* and then power up the noisy tuner */
1620 usbvision_power_on(usbvision);
1621 usbvision_i2c_register(usbvision);
1622 }
1623 }
1624
1625 /*
1626 * usbvision_probe()
1627 *
1628 * This procedure queries device descriptor and accepts the interface
1629 * if it looks like USBVISION video device
1630 *
1631 */
1632 static int __devinit usbvision_probe(struct usb_interface *intf,
1633 const struct usb_device_id *devid)
1634 {
1635 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1636 struct usb_interface *uif;
1637 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1638 const struct usb_host_interface *interface;
1639 struct usb_usbvision *usbvision = NULL;
1640 const struct usb_endpoint_descriptor *endpoint;
1641 int model,i;
1642
1643 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1644 dev->descriptor.idVendor,
1645 dev->descriptor.idProduct, ifnum);
1646
1647 model = devid->driver_info;
1648 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1649 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1650 return -ENODEV;
1651 }
1652 printk(KERN_INFO "%s: %s found\n", __func__,
1653 usbvision_device_data[model].ModelString);
1654
1655 if (usbvision_device_data[model].Interface >= 0) {
1656 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1657 } else {
1658 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1659 }
1660 endpoint = &interface->endpoint[1].desc;
1661 if (!usb_endpoint_xfer_isoc(endpoint)) {
1662 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1663 __func__, ifnum);
1664 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1665 __func__, endpoint->bmAttributes);
1666 return -ENODEV;
1667 }
1668 if (usb_endpoint_dir_out(endpoint)) {
1669 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1670 __func__, ifnum);
1671 return -ENODEV;
1672 }
1673
1674 usbvision = usbvision_alloc(dev, intf);
1675 if (usbvision == NULL) {
1676 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1677 return -ENOMEM;
1678 }
1679
1680 if (dev->descriptor.bNumConfigurations > 1) {
1681 usbvision->bridgeType = BRIDGE_NT1004;
1682 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1683 usbvision->bridgeType = BRIDGE_NT1005;
1684 } else {
1685 usbvision->bridgeType = BRIDGE_NT1003;
1686 }
1687 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1688
1689 mutex_lock(&usbvision->lock);
1690
1691 /* compute alternate max packet sizes */
1692 uif = dev->actconfig->interface[0];
1693
1694 usbvision->num_alt=uif->num_altsetting;
1695 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1696 usbvision->alt_max_pkt_size = kmalloc(32*
1697 usbvision->num_alt,GFP_KERNEL);
1698 if (usbvision->alt_max_pkt_size == NULL) {
1699 dev_err(&intf->dev, "usbvision: out of memory!\n");
1700 mutex_unlock(&usbvision->lock);
1701 return -ENOMEM;
1702 }
1703
1704 for (i = 0; i < usbvision->num_alt ; i++) {
1705 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1706 wMaxPacketSize);
1707 usbvision->alt_max_pkt_size[i] =
1708 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1709 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1710 usbvision->alt_max_pkt_size[i]);
1711 }
1712
1713
1714 usbvision->nr = usbvision_nr++;
1715
1716 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1717 if (usbvision->have_tuner) {
1718 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1719 }
1720
1721 usbvision->DevModel = model;
1722 usbvision->remove_pending = 0;
1723 usbvision->iface = ifnum;
1724 usbvision->ifaceAlt = 0;
1725 usbvision->video_endp = endpoint->bEndpointAddress;
1726 usbvision->isocPacketSize = 0;
1727 usbvision->usb_bandwidth = 0;
1728 usbvision->user = 0;
1729 usbvision->streaming = Stream_Off;
1730 usbvision_register_video(usbvision);
1731 usbvision_configure_video(usbvision);
1732 mutex_unlock(&usbvision->lock);
1733
1734
1735 usb_set_intfdata (intf, usbvision);
1736 usbvision_create_sysfs(usbvision->vdev);
1737
1738 PDEBUG(DBG_PROBE, "success");
1739 return 0;
1740 }
1741
1742
1743 /*
1744 * usbvision_disconnect()
1745 *
1746 * This procedure stops all driver activity, deallocates interface-private
1747 * structure (pointed by 'ptr') and after that driver should be removable
1748 * with no ill consequences.
1749 *
1750 */
1751 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1752 {
1753 struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1754
1755 PDEBUG(DBG_PROBE, "");
1756
1757 if (usbvision == NULL) {
1758 dev_err(&usbvision->dev->dev,
1759 "%s: usb_get_intfdata() failed\n", __func__);
1760 return;
1761 }
1762 usb_set_intfdata (intf, NULL);
1763
1764 mutex_lock(&usbvision->lock);
1765
1766 // At this time we ask to cancel outstanding URBs
1767 usbvision_stop_isoc(usbvision);
1768
1769 v4l2_device_disconnect(&usbvision->v4l2_dev);
1770
1771 if (usbvision->power) {
1772 usbvision_i2c_unregister(usbvision);
1773 usbvision_power_off(usbvision);
1774 }
1775 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1776
1777 usb_put_dev(usbvision->dev);
1778 usbvision->dev = NULL; // USB device is no more
1779
1780 mutex_unlock(&usbvision->lock);
1781
1782 if (usbvision->user) {
1783 printk(KERN_INFO "%s: In use, disconnect pending\n",
1784 __func__);
1785 wake_up_interruptible(&usbvision->wait_frame);
1786 wake_up_interruptible(&usbvision->wait_stream);
1787 } else {
1788 usbvision_release(usbvision);
1789 }
1790
1791 PDEBUG(DBG_PROBE, "success");
1792 }
1793
1794 static struct usb_driver usbvision_driver = {
1795 .name = "usbvision",
1796 .id_table = usbvision_table,
1797 .probe = usbvision_probe,
1798 .disconnect = __devexit_p(usbvision_disconnect),
1799 };
1800
1801 /*
1802 * usbvision_init()
1803 *
1804 * This code is run to initialize the driver.
1805 *
1806 */
1807 static int __init usbvision_init(void)
1808 {
1809 int errCode;
1810
1811 PDEBUG(DBG_PROBE, "");
1812
1813 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1814 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1815 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1816
1817 /* disable planar mode support unless compression enabled */
1818 if (isocMode != ISOC_MODE_COMPRESS ) {
1819 // FIXME : not the right way to set supported flag
1820 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1821 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1822 }
1823
1824 errCode = usb_register(&usbvision_driver);
1825
1826 if (errCode == 0) {
1827 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1828 PDEBUG(DBG_PROBE, "success");
1829 }
1830 return errCode;
1831 }
1832
1833 static void __exit usbvision_exit(void)
1834 {
1835 PDEBUG(DBG_PROBE, "");
1836
1837 usb_deregister(&usbvision_driver);
1838 PDEBUG(DBG_PROBE, "success");
1839 }
1840
1841 module_init(usbvision_init);
1842 module_exit(usbvision_exit);
1843
1844 /*
1845 * Overrides for Emacs so that we follow Linus's tabbing style.
1846 * ---------------------------------------------------------------------------
1847 * Local variables:
1848 * c-basic-offset: 8
1849 * End:
1850 */
kernel source for telekom puls (alcatel/mediatek)