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