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Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
[mirror_ubuntu-hirsute-kernel.git] / drivers / media / video / usbvision / usbvision-video.c
1 /*
2 * USB USBVISION Video device driver 0.9.10
3 *
4 *
5 *
6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
7 *
8 * This module is part of usbvision driver project.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Let's call the version 0.... until compression decoding is completely
25 * implemented.
26 *
27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
28 * It was based on USB CPiA driver written by Peter Pregler,
29 * Scott J. Bertin and Johannes Erdfelt
30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
32 * Updates to driver completed by Dwaine P. Garden
33 *
34 *
35 * TODO:
36 * - use submit_urb for all setup packets
37 * - Fix memory settings for nt1004. It is 4 times as big as the
38 * nt1003 memory.
39 * - Add audio on endpoint 3 for nt1004 chip.
40 * Seems impossible, needs a codec interface. Which one?
41 * - Clean up the driver.
42 * - optimization for performance.
43 * - Add Videotext capability (VBI). Working on it.....
44 * - Check audio for other devices
45 *
46 */
47
48 #include <linux/version.h>
49 #include <linux/kernel.h>
50 #include <linux/list.h>
51 #include <linux/timer.h>
52 #include <linux/slab.h>
53 #include <linux/smp_lock.h>
54 #include <linux/mm.h>
55 #include <linux/highmem.h>
56 #include <linux/vmalloc.h>
57 #include <linux/module.h>
58 #include <linux/init.h>
59 #include <linux/spinlock.h>
60 #include <asm/io.h>
61 #include <linux/videodev2.h>
62 #include <linux/i2c.h>
63
64 #include <media/saa7115.h>
65 #include <media/v4l2-common.h>
66 #include <media/v4l2-ioctl.h>
67 #include <media/tuner.h>
68
69 #include <linux/workqueue.h>
70
71 #include "usbvision.h"
72 #include "usbvision-cards.h"
73
74 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
75 Dwaine Garden <DwaineGarden@rogers.com>"
76 #define DRIVER_NAME "usbvision"
77 #define DRIVER_ALIAS "USBVision"
78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
79 #define DRIVER_LICENSE "GPL"
80 #define USBVISION_DRIVER_VERSION_MAJOR 0
81 #define USBVISION_DRIVER_VERSION_MINOR 9
82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
84 USBVISION_DRIVER_VERSION_MINOR,\
85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
87 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
88 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
89
90 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
91
92
93 #ifdef USBVISION_DEBUG
94 #define PDEBUG(level, fmt, args...) { \
95 if (video_debug & (level)) \
96 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
97 __func__, __LINE__ , ## args); \
98 }
99 #else
100 #define PDEBUG(level, fmt, args...) do {} while(0)
101 #endif
102
103 #define DBG_IO 1<<1
104 #define DBG_PROBE 1<<2
105 #define DBG_MMAP 1<<3
106
107 //String operations
108 #define rmspace(str) while(*str==' ') str++;
109 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
110
111
112 /* sequential number of usbvision device */
113 static int usbvision_nr;
114
115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
116 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
117 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
118 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
119 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
120 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
121 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
122 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
123 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
124 };
125
126 /* Function prototypes */
127 static void usbvision_release(struct usb_usbvision *usbvision);
128
129 /* Default initialization of device driver parameters */
130 /* Set the default format for ISOC endpoint */
131 static int isocMode = ISOC_MODE_COMPRESS;
132 /* Set the default Debug Mode of the device driver */
133 static int video_debug;
134 /* Set the default device to power on at startup */
135 static int PowerOnAtOpen = 1;
136 /* Sequential Number of Video Device */
137 static int video_nr = -1;
138 /* Sequential Number of Radio Device */
139 static int radio_nr = -1;
140
141 /* Grab parameters for the device driver */
142
143 /* Showing parameters under SYSFS */
144 module_param(isocMode, int, 0444);
145 module_param(video_debug, int, 0444);
146 module_param(PowerOnAtOpen, int, 0444);
147 module_param(video_nr, int, 0444);
148 module_param(radio_nr, int, 0444);
149
150 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
151 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
152 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
153 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
154 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
155
156
157 // Misc stuff
158 MODULE_AUTHOR(DRIVER_AUTHOR);
159 MODULE_DESCRIPTION(DRIVER_DESC);
160 MODULE_LICENSE(DRIVER_LICENSE);
161 MODULE_VERSION(USBVISION_VERSION_STRING);
162 MODULE_ALIAS(DRIVER_ALIAS);
163
164
165 /*****************************************************************************/
166 /* SYSFS Code - Copied from the stv680.c usb module. */
167 /* Device information is located at /sys/class/video4linux/video0 */
168 /* Device parameters information is located at /sys/module/usbvision */
169 /* Device USB Information is located at */
170 /* /sys/bus/usb/drivers/USBVision Video Grabber */
171 /*****************************************************************************/
172
173 #define YES_NO(x) ((x) ? "Yes" : "No")
174
175 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
176 {
177 struct video_device *vdev =
178 container_of(cd, struct video_device, dev);
179 return video_get_drvdata(vdev);
180 }
181
182 static ssize_t show_version(struct device *cd,
183 struct device_attribute *attr, char *buf)
184 {
185 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
186 }
187 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
188
189 static ssize_t show_model(struct device *cd,
190 struct device_attribute *attr, char *buf)
191 {
192 struct video_device *vdev =
193 container_of(cd, struct video_device, dev);
194 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
195 return sprintf(buf, "%s\n",
196 usbvision_device_data[usbvision->DevModel].ModelString);
197 }
198 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
199
200 static ssize_t show_hue(struct device *cd,
201 struct device_attribute *attr, char *buf)
202 {
203 struct video_device *vdev =
204 container_of(cd, struct video_device, dev);
205 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
206 struct v4l2_control ctrl;
207 ctrl.id = V4L2_CID_HUE;
208 ctrl.value = 0;
209 if(usbvision->user)
210 call_all(usbvision, core, g_ctrl, &ctrl);
211 return sprintf(buf, "%d\n", ctrl.value);
212 }
213 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
214
215 static ssize_t show_contrast(struct device *cd,
216 struct device_attribute *attr, char *buf)
217 {
218 struct video_device *vdev =
219 container_of(cd, struct video_device, dev);
220 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
221 struct v4l2_control ctrl;
222 ctrl.id = V4L2_CID_CONTRAST;
223 ctrl.value = 0;
224 if(usbvision->user)
225 call_all(usbvision, core, g_ctrl, &ctrl);
226 return sprintf(buf, "%d\n", ctrl.value);
227 }
228 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
229
230 static ssize_t show_brightness(struct device *cd,
231 struct device_attribute *attr, char *buf)
232 {
233 struct video_device *vdev =
234 container_of(cd, struct video_device, dev);
235 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
236 struct v4l2_control ctrl;
237 ctrl.id = V4L2_CID_BRIGHTNESS;
238 ctrl.value = 0;
239 if(usbvision->user)
240 call_all(usbvision, core, g_ctrl, &ctrl);
241 return sprintf(buf, "%d\n", ctrl.value);
242 }
243 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
244
245 static ssize_t show_saturation(struct device *cd,
246 struct device_attribute *attr, char *buf)
247 {
248 struct video_device *vdev =
249 container_of(cd, struct video_device, dev);
250 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
251 struct v4l2_control ctrl;
252 ctrl.id = V4L2_CID_SATURATION;
253 ctrl.value = 0;
254 if(usbvision->user)
255 call_all(usbvision, core, g_ctrl, &ctrl);
256 return sprintf(buf, "%d\n", ctrl.value);
257 }
258 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
259
260 static ssize_t show_streaming(struct device *cd,
261 struct device_attribute *attr, char *buf)
262 {
263 struct video_device *vdev =
264 container_of(cd, struct video_device, dev);
265 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
266 return sprintf(buf, "%s\n",
267 YES_NO(usbvision->streaming==Stream_On?1:0));
268 }
269 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
270
271 static ssize_t show_compression(struct device *cd,
272 struct device_attribute *attr, char *buf)
273 {
274 struct video_device *vdev =
275 container_of(cd, struct video_device, dev);
276 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
277 return sprintf(buf, "%s\n",
278 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
279 }
280 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
281
282 static ssize_t show_device_bridge(struct device *cd,
283 struct device_attribute *attr, char *buf)
284 {
285 struct video_device *vdev =
286 container_of(cd, struct video_device, dev);
287 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
288 return sprintf(buf, "%d\n", usbvision->bridgeType);
289 }
290 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
291
292 static void usbvision_create_sysfs(struct video_device *vdev)
293 {
294 int res;
295 if (!vdev)
296 return;
297 do {
298 res = device_create_file(&vdev->dev, &dev_attr_version);
299 if (res<0)
300 break;
301 res = device_create_file(&vdev->dev, &dev_attr_model);
302 if (res<0)
303 break;
304 res = device_create_file(&vdev->dev, &dev_attr_hue);
305 if (res<0)
306 break;
307 res = device_create_file(&vdev->dev, &dev_attr_contrast);
308 if (res<0)
309 break;
310 res = device_create_file(&vdev->dev, &dev_attr_brightness);
311 if (res<0)
312 break;
313 res = device_create_file(&vdev->dev, &dev_attr_saturation);
314 if (res<0)
315 break;
316 res = device_create_file(&vdev->dev, &dev_attr_streaming);
317 if (res<0)
318 break;
319 res = device_create_file(&vdev->dev, &dev_attr_compression);
320 if (res<0)
321 break;
322 res = device_create_file(&vdev->dev, &dev_attr_bridge);
323 if (res>=0)
324 return;
325 } while (0);
326
327 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
328 }
329
330 static void usbvision_remove_sysfs(struct video_device *vdev)
331 {
332 if (vdev) {
333 device_remove_file(&vdev->dev, &dev_attr_version);
334 device_remove_file(&vdev->dev, &dev_attr_model);
335 device_remove_file(&vdev->dev, &dev_attr_hue);
336 device_remove_file(&vdev->dev, &dev_attr_contrast);
337 device_remove_file(&vdev->dev, &dev_attr_brightness);
338 device_remove_file(&vdev->dev, &dev_attr_saturation);
339 device_remove_file(&vdev->dev, &dev_attr_streaming);
340 device_remove_file(&vdev->dev, &dev_attr_compression);
341 device_remove_file(&vdev->dev, &dev_attr_bridge);
342 }
343 }
344
345 /*
346 * usbvision_open()
347 *
348 * This is part of Video 4 Linux API. The driver can be opened by one
349 * client only (checks internal counter 'usbvision->user'). The procedure
350 * then allocates buffers needed for video processing.
351 *
352 */
353 static int usbvision_v4l2_open(struct file *file)
354 {
355 struct usb_usbvision *usbvision = video_drvdata(file);
356 int errCode = 0;
357
358 PDEBUG(DBG_IO, "open");
359
360 lock_kernel();
361 usbvision_reset_powerOffTimer(usbvision);
362
363 if (usbvision->user)
364 errCode = -EBUSY;
365 else {
366 /* Allocate memory for the scratch ring buffer */
367 errCode = usbvision_scratch_alloc(usbvision);
368 if (isocMode==ISOC_MODE_COMPRESS) {
369 /* Allocate intermediate decompression buffers
370 only if needed */
371 errCode = usbvision_decompress_alloc(usbvision);
372 }
373 if (errCode) {
374 /* Deallocate all buffers if trouble */
375 usbvision_scratch_free(usbvision);
376 usbvision_decompress_free(usbvision);
377 }
378 }
379
380 /* If so far no errors then we shall start the camera */
381 if (!errCode) {
382 mutex_lock(&usbvision->lock);
383 if (usbvision->power == 0) {
384 usbvision_power_on(usbvision);
385 usbvision_i2c_register(usbvision);
386 }
387
388 /* Send init sequence only once, it's large! */
389 if (!usbvision->initialized) {
390 int setup_ok = 0;
391 setup_ok = usbvision_setup(usbvision,isocMode);
392 if (setup_ok)
393 usbvision->initialized = 1;
394 else
395 errCode = -EBUSY;
396 }
397
398 if (!errCode) {
399 usbvision_begin_streaming(usbvision);
400 errCode = usbvision_init_isoc(usbvision);
401 /* device must be initialized before isoc transfer */
402 usbvision_muxsel(usbvision,0);
403 usbvision->user++;
404 } else {
405 if (PowerOnAtOpen) {
406 usbvision_i2c_unregister(usbvision);
407 usbvision_power_off(usbvision);
408 usbvision->initialized = 0;
409 }
410 }
411 mutex_unlock(&usbvision->lock);
412 }
413
414 /* prepare queues */
415 usbvision_empty_framequeues(usbvision);
416
417 PDEBUG(DBG_IO, "success");
418 unlock_kernel();
419 return errCode;
420 }
421
422 /*
423 * usbvision_v4l2_close()
424 *
425 * This is part of Video 4 Linux API. The procedure
426 * stops streaming and deallocates all buffers that were earlier
427 * allocated in usbvision_v4l2_open().
428 *
429 */
430 static int usbvision_v4l2_close(struct file *file)
431 {
432 struct usb_usbvision *usbvision = video_drvdata(file);
433
434 PDEBUG(DBG_IO, "close");
435 mutex_lock(&usbvision->lock);
436
437 usbvision_audio_off(usbvision);
438 usbvision_restart_isoc(usbvision);
439 usbvision_stop_isoc(usbvision);
440
441 usbvision_decompress_free(usbvision);
442 usbvision_frames_free(usbvision);
443 usbvision_empty_framequeues(usbvision);
444 usbvision_scratch_free(usbvision);
445
446 usbvision->user--;
447
448 if (PowerOnAtOpen) {
449 /* power off in a little while
450 to avoid off/on every close/open short sequences */
451 usbvision_set_powerOffTimer(usbvision);
452 usbvision->initialized = 0;
453 }
454
455 mutex_unlock(&usbvision->lock);
456
457 if (usbvision->remove_pending) {
458 printk(KERN_INFO "%s: Final disconnect\n", __func__);
459 usbvision_release(usbvision);
460 }
461
462 PDEBUG(DBG_IO, "success");
463 return 0;
464 }
465
466
467 /*
468 * usbvision_ioctl()
469 *
470 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
471 *
472 */
473 #ifdef CONFIG_VIDEO_ADV_DEBUG
474 static int vidioc_g_register (struct file *file, void *priv,
475 struct v4l2_dbg_register *reg)
476 {
477 struct usb_usbvision *usbvision = video_drvdata(file);
478 int errCode;
479
480 if (!v4l2_chip_match_host(&reg->match))
481 return -EINVAL;
482 /* NT100x has a 8-bit register space */
483 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
484 if (errCode < 0) {
485 dev_err(&usbvision->vdev->dev,
486 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
487 __func__, errCode);
488 return errCode;
489 }
490 reg->val = errCode;
491 reg->size = 1;
492 return 0;
493 }
494
495 static int vidioc_s_register (struct file *file, void *priv,
496 struct v4l2_dbg_register *reg)
497 {
498 struct usb_usbvision *usbvision = video_drvdata(file);
499 int errCode;
500
501 if (!v4l2_chip_match_host(&reg->match))
502 return -EINVAL;
503 /* NT100x has a 8-bit register space */
504 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
505 if (errCode < 0) {
506 dev_err(&usbvision->vdev->dev,
507 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
508 __func__, errCode);
509 return errCode;
510 }
511 return 0;
512 }
513 #endif
514
515 static int vidioc_querycap (struct file *file, void *priv,
516 struct v4l2_capability *vc)
517 {
518 struct usb_usbvision *usbvision = video_drvdata(file);
519
520 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
521 strlcpy(vc->card,
522 usbvision_device_data[usbvision->DevModel].ModelString,
523 sizeof(vc->card));
524 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
525 vc->version = USBVISION_DRIVER_VERSION;
526 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
527 V4L2_CAP_AUDIO |
528 V4L2_CAP_READWRITE |
529 V4L2_CAP_STREAMING |
530 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
531 return 0;
532 }
533
534 static int vidioc_enum_input (struct file *file, void *priv,
535 struct v4l2_input *vi)
536 {
537 struct usb_usbvision *usbvision = video_drvdata(file);
538 int chan;
539
540 if (vi->index >= usbvision->video_inputs)
541 return -EINVAL;
542 if (usbvision->have_tuner) {
543 chan = vi->index;
544 } else {
545 chan = vi->index + 1; /*skip Television string*/
546 }
547 /* Determine the requested input characteristics
548 specific for each usbvision card model */
549 switch(chan) {
550 case 0:
551 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
552 strcpy(vi->name, "White Video Input");
553 } else {
554 strcpy(vi->name, "Television");
555 vi->type = V4L2_INPUT_TYPE_TUNER;
556 vi->audioset = 1;
557 vi->tuner = chan;
558 vi->std = USBVISION_NORMS;
559 }
560 break;
561 case 1:
562 vi->type = V4L2_INPUT_TYPE_CAMERA;
563 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
564 strcpy(vi->name, "Green Video Input");
565 } else {
566 strcpy(vi->name, "Composite Video Input");
567 }
568 vi->std = V4L2_STD_PAL;
569 break;
570 case 2:
571 vi->type = V4L2_INPUT_TYPE_CAMERA;
572 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
573 strcpy(vi->name, "Yellow Video Input");
574 } else {
575 strcpy(vi->name, "S-Video Input");
576 }
577 vi->std = V4L2_STD_PAL;
578 break;
579 case 3:
580 vi->type = V4L2_INPUT_TYPE_CAMERA;
581 strcpy(vi->name, "Red Video Input");
582 vi->std = V4L2_STD_PAL;
583 break;
584 }
585 return 0;
586 }
587
588 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
589 {
590 struct usb_usbvision *usbvision = video_drvdata(file);
591
592 *input = usbvision->ctl_input;
593 return 0;
594 }
595
596 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
597 {
598 struct usb_usbvision *usbvision = video_drvdata(file);
599
600 if (input >= usbvision->video_inputs)
601 return -EINVAL;
602
603 mutex_lock(&usbvision->lock);
604 usbvision_muxsel(usbvision, input);
605 usbvision_set_input(usbvision);
606 usbvision_set_output(usbvision,
607 usbvision->curwidth,
608 usbvision->curheight);
609 mutex_unlock(&usbvision->lock);
610 return 0;
611 }
612
613 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
614 {
615 struct usb_usbvision *usbvision = video_drvdata(file);
616
617 usbvision->tvnormId=*id;
618
619 mutex_lock(&usbvision->lock);
620 call_all(usbvision, core, s_std, usbvision->tvnormId);
621 mutex_unlock(&usbvision->lock);
622 /* propagate the change to the decoder */
623 usbvision_muxsel(usbvision, usbvision->ctl_input);
624
625 return 0;
626 }
627
628 static int vidioc_g_tuner (struct file *file, void *priv,
629 struct v4l2_tuner *vt)
630 {
631 struct usb_usbvision *usbvision = video_drvdata(file);
632
633 if (!usbvision->have_tuner || vt->index) // Only tuner 0
634 return -EINVAL;
635 if(usbvision->radio) {
636 strcpy(vt->name, "Radio");
637 vt->type = V4L2_TUNER_RADIO;
638 } else {
639 strcpy(vt->name, "Television");
640 }
641 /* Let clients fill in the remainder of this struct */
642 call_all(usbvision, tuner, g_tuner, vt);
643
644 return 0;
645 }
646
647 static int vidioc_s_tuner (struct file *file, void *priv,
648 struct v4l2_tuner *vt)
649 {
650 struct usb_usbvision *usbvision = video_drvdata(file);
651
652 // Only no or one tuner for now
653 if (!usbvision->have_tuner || vt->index)
654 return -EINVAL;
655 /* let clients handle this */
656 call_all(usbvision, tuner, s_tuner, vt);
657
658 return 0;
659 }
660
661 static int vidioc_g_frequency (struct file *file, void *priv,
662 struct v4l2_frequency *freq)
663 {
664 struct usb_usbvision *usbvision = video_drvdata(file);
665
666 freq->tuner = 0; // Only one tuner
667 if(usbvision->radio) {
668 freq->type = V4L2_TUNER_RADIO;
669 } else {
670 freq->type = V4L2_TUNER_ANALOG_TV;
671 }
672 freq->frequency = usbvision->freq;
673
674 return 0;
675 }
676
677 static int vidioc_s_frequency (struct file *file, void *priv,
678 struct v4l2_frequency *freq)
679 {
680 struct usb_usbvision *usbvision = video_drvdata(file);
681
682 // Only no or one tuner for now
683 if (!usbvision->have_tuner || freq->tuner)
684 return -EINVAL;
685
686 usbvision->freq = freq->frequency;
687 call_all(usbvision, tuner, s_frequency, freq);
688
689 return 0;
690 }
691
692 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
693 {
694 struct usb_usbvision *usbvision = video_drvdata(file);
695
696 if(usbvision->radio) {
697 strcpy(a->name,"Radio");
698 } else {
699 strcpy(a->name, "TV");
700 }
701
702 return 0;
703 }
704
705 static int vidioc_s_audio (struct file *file, void *fh,
706 struct v4l2_audio *a)
707 {
708 if(a->index) {
709 return -EINVAL;
710 }
711
712 return 0;
713 }
714
715 static int vidioc_queryctrl (struct file *file, void *priv,
716 struct v4l2_queryctrl *ctrl)
717 {
718 struct usb_usbvision *usbvision = video_drvdata(file);
719
720 call_all(usbvision, core, queryctrl, ctrl);
721
722 if (!ctrl->type)
723 return -EINVAL;
724
725 return 0;
726 }
727
728 static int vidioc_g_ctrl (struct file *file, void *priv,
729 struct v4l2_control *ctrl)
730 {
731 struct usb_usbvision *usbvision = video_drvdata(file);
732 call_all(usbvision, core, g_ctrl, ctrl);
733
734 return 0;
735 }
736
737 static int vidioc_s_ctrl (struct file *file, void *priv,
738 struct v4l2_control *ctrl)
739 {
740 struct usb_usbvision *usbvision = video_drvdata(file);
741 call_all(usbvision, core, s_ctrl, ctrl);
742
743 return 0;
744 }
745
746 static int vidioc_reqbufs (struct file *file,
747 void *priv, struct v4l2_requestbuffers *vr)
748 {
749 struct usb_usbvision *usbvision = video_drvdata(file);
750 int ret;
751
752 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
753
754 /* Check input validity:
755 the user must do a VIDEO CAPTURE and MMAP method. */
756 if (vr->memory != V4L2_MEMORY_MMAP)
757 return -EINVAL;
758
759 if(usbvision->streaming == Stream_On) {
760 if ((ret = usbvision_stream_interrupt(usbvision)))
761 return ret;
762 }
763
764 usbvision_frames_free(usbvision);
765 usbvision_empty_framequeues(usbvision);
766 vr->count = usbvision_frames_alloc(usbvision,vr->count);
767
768 usbvision->curFrame = NULL;
769
770 return 0;
771 }
772
773 static int vidioc_querybuf (struct file *file,
774 void *priv, struct v4l2_buffer *vb)
775 {
776 struct usb_usbvision *usbvision = video_drvdata(file);
777 struct usbvision_frame *frame;
778
779 /* FIXME : must control
780 that buffers are mapped (VIDIOC_REQBUFS has been called) */
781 if(vb->index>=usbvision->num_frames) {
782 return -EINVAL;
783 }
784 /* Updating the corresponding frame state */
785 vb->flags = 0;
786 frame = &usbvision->frame[vb->index];
787 if(frame->grabstate >= FrameState_Ready)
788 vb->flags |= V4L2_BUF_FLAG_QUEUED;
789 if(frame->grabstate >= FrameState_Done)
790 vb->flags |= V4L2_BUF_FLAG_DONE;
791 if(frame->grabstate == FrameState_Unused)
792 vb->flags |= V4L2_BUF_FLAG_MAPPED;
793 vb->memory = V4L2_MEMORY_MMAP;
794
795 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
796
797 vb->memory = V4L2_MEMORY_MMAP;
798 vb->field = V4L2_FIELD_NONE;
799 vb->length = usbvision->curwidth*
800 usbvision->curheight*
801 usbvision->palette.bytes_per_pixel;
802 vb->timestamp = usbvision->frame[vb->index].timestamp;
803 vb->sequence = usbvision->frame[vb->index].sequence;
804 return 0;
805 }
806
807 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
808 {
809 struct usb_usbvision *usbvision = video_drvdata(file);
810 struct usbvision_frame *frame;
811 unsigned long lock_flags;
812
813 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
814 if(vb->index>=usbvision->num_frames) {
815 return -EINVAL;
816 }
817
818 frame = &usbvision->frame[vb->index];
819
820 if (frame->grabstate != FrameState_Unused) {
821 return -EAGAIN;
822 }
823
824 /* Mark it as ready and enqueue frame */
825 frame->grabstate = FrameState_Ready;
826 frame->scanstate = ScanState_Scanning;
827 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
828
829 vb->flags &= ~V4L2_BUF_FLAG_DONE;
830
831 /* set v4l2_format index */
832 frame->v4l2_format = usbvision->palette;
833
834 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
835 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
836 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
837
838 return 0;
839 }
840
841 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
842 {
843 struct usb_usbvision *usbvision = video_drvdata(file);
844 int ret;
845 struct usbvision_frame *f;
846 unsigned long lock_flags;
847
848 if (list_empty(&(usbvision->outqueue))) {
849 if (usbvision->streaming == Stream_Idle)
850 return -EINVAL;
851 ret = wait_event_interruptible
852 (usbvision->wait_frame,
853 !list_empty(&(usbvision->outqueue)));
854 if (ret)
855 return ret;
856 }
857
858 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
859 f = list_entry(usbvision->outqueue.next,
860 struct usbvision_frame, frame);
861 list_del(usbvision->outqueue.next);
862 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
863
864 f->grabstate = FrameState_Unused;
865
866 vb->memory = V4L2_MEMORY_MMAP;
867 vb->flags = V4L2_BUF_FLAG_MAPPED |
868 V4L2_BUF_FLAG_QUEUED |
869 V4L2_BUF_FLAG_DONE;
870 vb->index = f->index;
871 vb->sequence = f->sequence;
872 vb->timestamp = f->timestamp;
873 vb->field = V4L2_FIELD_NONE;
874 vb->bytesused = f->scanlength;
875
876 return 0;
877 }
878
879 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
880 {
881 struct usb_usbvision *usbvision = video_drvdata(file);
882
883 usbvision->streaming = Stream_On;
884 call_all(usbvision, video, s_stream, 1);
885
886 return 0;
887 }
888
889 static int vidioc_streamoff(struct file *file,
890 void *priv, enum v4l2_buf_type type)
891 {
892 struct usb_usbvision *usbvision = video_drvdata(file);
893
894 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
895 return -EINVAL;
896
897 if(usbvision->streaming == Stream_On) {
898 usbvision_stream_interrupt(usbvision);
899 /* Stop all video streamings */
900 call_all(usbvision, video, s_stream, 0);
901 }
902 usbvision_empty_framequeues(usbvision);
903
904 return 0;
905 }
906
907 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
908 struct v4l2_fmtdesc *vfd)
909 {
910 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
911 return -EINVAL;
912 }
913 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
914 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
915 return 0;
916 }
917
918 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
919 struct v4l2_format *vf)
920 {
921 struct usb_usbvision *usbvision = video_drvdata(file);
922 vf->fmt.pix.width = usbvision->curwidth;
923 vf->fmt.pix.height = usbvision->curheight;
924 vf->fmt.pix.pixelformat = usbvision->palette.format;
925 vf->fmt.pix.bytesperline =
926 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
927 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
928 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
929 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
930
931 return 0;
932 }
933
934 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
935 struct v4l2_format *vf)
936 {
937 struct usb_usbvision *usbvision = video_drvdata(file);
938 int formatIdx;
939
940 /* Find requested format in available ones */
941 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
942 if(vf->fmt.pix.pixelformat ==
943 usbvision_v4l2_format[formatIdx].format) {
944 usbvision->palette = usbvision_v4l2_format[formatIdx];
945 break;
946 }
947 }
948 /* robustness */
949 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
950 return -EINVAL;
951 }
952 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
953 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
954
955 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
956 usbvision->palette.bytes_per_pixel;
957 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
958
959 return 0;
960 }
961
962 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
963 struct v4l2_format *vf)
964 {
965 struct usb_usbvision *usbvision = video_drvdata(file);
966 int ret;
967
968 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
969 return ret;
970 }
971
972 /* stop io in case it is already in progress */
973 if(usbvision->streaming == Stream_On) {
974 if ((ret = usbvision_stream_interrupt(usbvision)))
975 return ret;
976 }
977 usbvision_frames_free(usbvision);
978 usbvision_empty_framequeues(usbvision);
979
980 usbvision->curFrame = NULL;
981
982 /* by now we are committed to the new data... */
983 mutex_lock(&usbvision->lock);
984 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
985 mutex_unlock(&usbvision->lock);
986
987 return 0;
988 }
989
990 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
991 size_t count, loff_t *ppos)
992 {
993 struct usb_usbvision *usbvision = video_drvdata(file);
994 int noblock = file->f_flags & O_NONBLOCK;
995 unsigned long lock_flags;
996
997 int ret,i;
998 struct usbvision_frame *frame;
999
1000 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1001 (unsigned long)count, noblock);
1002
1003 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1004 return -EFAULT;
1005
1006 /* This entry point is compatible with the mmap routines
1007 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1008 to get frames or call read on the device. */
1009 if(!usbvision->num_frames) {
1010 /* First, allocate some frames to work with
1011 if this has not been done with VIDIOC_REQBUF */
1012 usbvision_frames_free(usbvision);
1013 usbvision_empty_framequeues(usbvision);
1014 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1015 }
1016
1017 if(usbvision->streaming != Stream_On) {
1018 /* no stream is running, make it running ! */
1019 usbvision->streaming = Stream_On;
1020 call_all(usbvision, video, s_stream, 1);
1021 }
1022
1023 /* Then, enqueue as many frames as possible
1024 (like a user of VIDIOC_QBUF would do) */
1025 for(i=0;i<usbvision->num_frames;i++) {
1026 frame = &usbvision->frame[i];
1027 if(frame->grabstate == FrameState_Unused) {
1028 /* Mark it as ready and enqueue frame */
1029 frame->grabstate = FrameState_Ready;
1030 frame->scanstate = ScanState_Scanning;
1031 /* Accumulated in usbvision_parse_data() */
1032 frame->scanlength = 0;
1033
1034 /* set v4l2_format index */
1035 frame->v4l2_format = usbvision->palette;
1036
1037 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1038 list_add_tail(&frame->frame, &usbvision->inqueue);
1039 spin_unlock_irqrestore(&usbvision->queue_lock,
1040 lock_flags);
1041 }
1042 }
1043
1044 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1045 if (list_empty(&(usbvision->outqueue))) {
1046 if(noblock)
1047 return -EAGAIN;
1048
1049 ret = wait_event_interruptible
1050 (usbvision->wait_frame,
1051 !list_empty(&(usbvision->outqueue)));
1052 if (ret)
1053 return ret;
1054 }
1055
1056 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1057 frame = list_entry(usbvision->outqueue.next,
1058 struct usbvision_frame, frame);
1059 list_del(usbvision->outqueue.next);
1060 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1061
1062 /* An error returns an empty frame */
1063 if (frame->grabstate == FrameState_Error) {
1064 frame->bytes_read = 0;
1065 return 0;
1066 }
1067
1068 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1069 __func__,
1070 frame->index, frame->bytes_read, frame->scanlength);
1071
1072 /* copy bytes to user space; we allow for partials reads */
1073 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1074 count = frame->scanlength - frame->bytes_read;
1075
1076 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1077 return -EFAULT;
1078 }
1079
1080 frame->bytes_read += count;
1081 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1082 __func__,
1083 (unsigned long)count, frame->bytes_read);
1084
1085 /* For now, forget the frame if it has not been read in one shot. */
1086 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1087 frame->bytes_read = 0;
1088
1089 /* Mark it as available to be used again. */
1090 frame->grabstate = FrameState_Unused;
1091 /* } */
1092
1093 return count;
1094 }
1095
1096 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1097 {
1098 unsigned long size = vma->vm_end - vma->vm_start,
1099 start = vma->vm_start;
1100 void *pos;
1101 u32 i;
1102 struct usb_usbvision *usbvision = video_drvdata(file);
1103
1104 PDEBUG(DBG_MMAP, "mmap");
1105
1106 mutex_lock(&usbvision->lock);
1107
1108 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1109 mutex_unlock(&usbvision->lock);
1110 return -EFAULT;
1111 }
1112
1113 if (!(vma->vm_flags & VM_WRITE) ||
1114 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1115 mutex_unlock(&usbvision->lock);
1116 return -EINVAL;
1117 }
1118
1119 for (i = 0; i < usbvision->num_frames; i++) {
1120 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1121 vma->vm_pgoff)
1122 break;
1123 }
1124 if (i == usbvision->num_frames) {
1125 PDEBUG(DBG_MMAP,
1126 "mmap: user supplied mapping address is out of range");
1127 mutex_unlock(&usbvision->lock);
1128 return -EINVAL;
1129 }
1130
1131 /* VM_IO is eventually going to replace PageReserved altogether */
1132 vma->vm_flags |= VM_IO;
1133 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1134
1135 pos = usbvision->frame[i].data;
1136 while (size > 0) {
1137
1138 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1139 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1140 mutex_unlock(&usbvision->lock);
1141 return -EAGAIN;
1142 }
1143 start += PAGE_SIZE;
1144 pos += PAGE_SIZE;
1145 size -= PAGE_SIZE;
1146 }
1147
1148 mutex_unlock(&usbvision->lock);
1149 return 0;
1150 }
1151
1152
1153 /*
1154 * Here comes the stuff for radio on usbvision based devices
1155 *
1156 */
1157 static int usbvision_radio_open(struct file *file)
1158 {
1159 struct usb_usbvision *usbvision = video_drvdata(file);
1160 int errCode = 0;
1161
1162 PDEBUG(DBG_IO, "%s:", __func__);
1163
1164 mutex_lock(&usbvision->lock);
1165
1166 if (usbvision->user) {
1167 dev_err(&usbvision->rdev->dev,
1168 "%s: Someone tried to open an already opened USBVision Radio!\n",
1169 __func__);
1170 errCode = -EBUSY;
1171 }
1172 else {
1173 if(PowerOnAtOpen) {
1174 usbvision_reset_powerOffTimer(usbvision);
1175 if (usbvision->power == 0) {
1176 usbvision_power_on(usbvision);
1177 usbvision_i2c_register(usbvision);
1178 }
1179 }
1180
1181 /* Alternate interface 1 is is the biggest frame size */
1182 errCode = usbvision_set_alternate(usbvision);
1183 if (errCode < 0) {
1184 usbvision->last_error = errCode;
1185 errCode = -EBUSY;
1186 goto out;
1187 }
1188
1189 // If so far no errors then we shall start the radio
1190 usbvision->radio = 1;
1191 call_all(usbvision, tuner, s_radio);
1192 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1193 usbvision->user++;
1194 }
1195
1196 if (errCode) {
1197 if (PowerOnAtOpen) {
1198 usbvision_i2c_unregister(usbvision);
1199 usbvision_power_off(usbvision);
1200 usbvision->initialized = 0;
1201 }
1202 }
1203 out:
1204 mutex_unlock(&usbvision->lock);
1205 return errCode;
1206 }
1207
1208
1209 static int usbvision_radio_close(struct file *file)
1210 {
1211 struct usb_usbvision *usbvision = video_drvdata(file);
1212 int errCode = 0;
1213
1214 PDEBUG(DBG_IO, "");
1215
1216 mutex_lock(&usbvision->lock);
1217
1218 /* Set packet size to 0 */
1219 usbvision->ifaceAlt=0;
1220 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1221 usbvision->ifaceAlt);
1222
1223 usbvision_audio_off(usbvision);
1224 usbvision->radio=0;
1225 usbvision->user--;
1226
1227 if (PowerOnAtOpen) {
1228 usbvision_set_powerOffTimer(usbvision);
1229 usbvision->initialized = 0;
1230 }
1231
1232 mutex_unlock(&usbvision->lock);
1233
1234 if (usbvision->remove_pending) {
1235 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1236 usbvision_release(usbvision);
1237 }
1238
1239 PDEBUG(DBG_IO, "success");
1240 return errCode;
1241 }
1242
1243 //
1244 // Video registration stuff
1245 //
1246
1247 // Video template
1248 static const struct v4l2_file_operations usbvision_fops = {
1249 .owner = THIS_MODULE,
1250 .open = usbvision_v4l2_open,
1251 .release = usbvision_v4l2_close,
1252 .read = usbvision_v4l2_read,
1253 .mmap = usbvision_v4l2_mmap,
1254 .ioctl = video_ioctl2,
1255 /* .poll = video_poll, */
1256 };
1257
1258 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1259 .vidioc_querycap = vidioc_querycap,
1260 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1261 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1262 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1263 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1264 .vidioc_reqbufs = vidioc_reqbufs,
1265 .vidioc_querybuf = vidioc_querybuf,
1266 .vidioc_qbuf = vidioc_qbuf,
1267 .vidioc_dqbuf = vidioc_dqbuf,
1268 .vidioc_s_std = vidioc_s_std,
1269 .vidioc_enum_input = vidioc_enum_input,
1270 .vidioc_g_input = vidioc_g_input,
1271 .vidioc_s_input = vidioc_s_input,
1272 .vidioc_queryctrl = vidioc_queryctrl,
1273 .vidioc_g_audio = vidioc_g_audio,
1274 .vidioc_s_audio = vidioc_s_audio,
1275 .vidioc_g_ctrl = vidioc_g_ctrl,
1276 .vidioc_s_ctrl = vidioc_s_ctrl,
1277 .vidioc_streamon = vidioc_streamon,
1278 .vidioc_streamoff = vidioc_streamoff,
1279 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1280 /* .vidiocgmbuf = vidiocgmbuf, */
1281 #endif
1282 .vidioc_g_tuner = vidioc_g_tuner,
1283 .vidioc_s_tuner = vidioc_s_tuner,
1284 .vidioc_g_frequency = vidioc_g_frequency,
1285 .vidioc_s_frequency = vidioc_s_frequency,
1286 #ifdef CONFIG_VIDEO_ADV_DEBUG
1287 .vidioc_g_register = vidioc_g_register,
1288 .vidioc_s_register = vidioc_s_register,
1289 #endif
1290 };
1291
1292 static struct video_device usbvision_video_template = {
1293 .fops = &usbvision_fops,
1294 .ioctl_ops = &usbvision_ioctl_ops,
1295 .name = "usbvision-video",
1296 .release = video_device_release,
1297 .tvnorms = USBVISION_NORMS,
1298 .current_norm = V4L2_STD_PAL
1299 };
1300
1301
1302 // Radio template
1303 static const struct v4l2_file_operations usbvision_radio_fops = {
1304 .owner = THIS_MODULE,
1305 .open = usbvision_radio_open,
1306 .release = usbvision_radio_close,
1307 .ioctl = video_ioctl2,
1308 };
1309
1310 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1311 .vidioc_querycap = vidioc_querycap,
1312 .vidioc_enum_input = vidioc_enum_input,
1313 .vidioc_g_input = vidioc_g_input,
1314 .vidioc_s_input = vidioc_s_input,
1315 .vidioc_queryctrl = vidioc_queryctrl,
1316 .vidioc_g_audio = vidioc_g_audio,
1317 .vidioc_s_audio = vidioc_s_audio,
1318 .vidioc_g_ctrl = vidioc_g_ctrl,
1319 .vidioc_s_ctrl = vidioc_s_ctrl,
1320 .vidioc_g_tuner = vidioc_g_tuner,
1321 .vidioc_s_tuner = vidioc_s_tuner,
1322 .vidioc_g_frequency = vidioc_g_frequency,
1323 .vidioc_s_frequency = vidioc_s_frequency,
1324 };
1325
1326 static struct video_device usbvision_radio_template = {
1327 .fops = &usbvision_radio_fops,
1328 .name = "usbvision-radio",
1329 .release = video_device_release,
1330 .ioctl_ops = &usbvision_radio_ioctl_ops,
1331
1332 .tvnorms = USBVISION_NORMS,
1333 .current_norm = V4L2_STD_PAL
1334 };
1335
1336
1337 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1338 struct video_device *vdev_template,
1339 char *name)
1340 {
1341 struct usb_device *usb_dev = usbvision->dev;
1342 struct video_device *vdev;
1343
1344 if (usb_dev == NULL) {
1345 dev_err(&usbvision->dev->dev,
1346 "%s: usbvision->dev is not set\n", __func__);
1347 return NULL;
1348 }
1349
1350 vdev = video_device_alloc();
1351 if (NULL == vdev) {
1352 return NULL;
1353 }
1354 *vdev = *vdev_template;
1355 vdev->v4l2_dev = &usbvision->v4l2_dev;
1356 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1357 video_set_drvdata(vdev, usbvision);
1358 return vdev;
1359 }
1360
1361 // unregister video4linux devices
1362 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1363 {
1364 // Radio Device:
1365 if (usbvision->rdev) {
1366 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1367 video_device_node_name(usbvision->rdev));
1368 if (video_is_registered(usbvision->rdev)) {
1369 video_unregister_device(usbvision->rdev);
1370 } else {
1371 video_device_release(usbvision->rdev);
1372 }
1373 usbvision->rdev = NULL;
1374 }
1375
1376 // Video Device:
1377 if (usbvision->vdev) {
1378 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1379 video_device_node_name(usbvision->vdev));
1380 if (video_is_registered(usbvision->vdev)) {
1381 video_unregister_device(usbvision->vdev);
1382 } else {
1383 video_device_release(usbvision->vdev);
1384 }
1385 usbvision->vdev = NULL;
1386 }
1387 }
1388
1389 // register video4linux devices
1390 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1391 {
1392 // Video Device:
1393 usbvision->vdev = usbvision_vdev_init(usbvision,
1394 &usbvision_video_template,
1395 "USBVision Video");
1396 if (usbvision->vdev == NULL) {
1397 goto err_exit;
1398 }
1399 if (video_register_device(usbvision->vdev,
1400 VFL_TYPE_GRABBER,
1401 video_nr)<0) {
1402 goto err_exit;
1403 }
1404 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1405 usbvision->nr, video_device_node_name(usbvision->vdev));
1406
1407 // Radio Device:
1408 if (usbvision_device_data[usbvision->DevModel].Radio) {
1409 // usbvision has radio
1410 usbvision->rdev = usbvision_vdev_init(usbvision,
1411 &usbvision_radio_template,
1412 "USBVision Radio");
1413 if (usbvision->rdev == NULL) {
1414 goto err_exit;
1415 }
1416 if (video_register_device(usbvision->rdev,
1417 VFL_TYPE_RADIO,
1418 radio_nr)<0) {
1419 goto err_exit;
1420 }
1421 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1422 usbvision->nr, video_device_node_name(usbvision->rdev));
1423 }
1424 // all done
1425 return 0;
1426
1427 err_exit:
1428 dev_err(&usbvision->dev->dev,
1429 "USBVision[%d]: video_register_device() failed\n",
1430 usbvision->nr);
1431 usbvision_unregister_video(usbvision);
1432 return -1;
1433 }
1434
1435 /*
1436 * usbvision_alloc()
1437 *
1438 * This code allocates the struct usb_usbvision.
1439 * It is filled with default values.
1440 *
1441 * Returns NULL on error, a pointer to usb_usbvision else.
1442 *
1443 */
1444 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1445 struct usb_interface *intf)
1446 {
1447 struct usb_usbvision *usbvision;
1448
1449 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1450 if (usbvision == NULL)
1451 return NULL;
1452
1453 usbvision->dev = dev;
1454 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1455 goto err_free;
1456
1457 mutex_init(&usbvision->lock); /* available */
1458
1459 // prepare control urb for control messages during interrupts
1460 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1461 if (usbvision->ctrlUrb == NULL)
1462 goto err_unreg;
1463 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1464
1465 usbvision_init_powerOffTimer(usbvision);
1466
1467 return usbvision;
1468
1469 err_unreg:
1470 v4l2_device_unregister(&usbvision->v4l2_dev);
1471 err_free:
1472 kfree(usbvision);
1473 return NULL;
1474 }
1475
1476 /*
1477 * usbvision_release()
1478 *
1479 * This code does final release of struct usb_usbvision. This happens
1480 * after the device is disconnected -and- all clients closed their files.
1481 *
1482 */
1483 static void usbvision_release(struct usb_usbvision *usbvision)
1484 {
1485 PDEBUG(DBG_PROBE, "");
1486
1487 mutex_lock(&usbvision->lock);
1488
1489 usbvision_reset_powerOffTimer(usbvision);
1490
1491 usbvision->initialized = 0;
1492
1493 mutex_unlock(&usbvision->lock);
1494
1495 usbvision_remove_sysfs(usbvision->vdev);
1496 usbvision_unregister_video(usbvision);
1497
1498 if (usbvision->ctrlUrb) {
1499 usb_free_urb(usbvision->ctrlUrb);
1500 }
1501
1502 v4l2_device_unregister(&usbvision->v4l2_dev);
1503 kfree(usbvision);
1504
1505 PDEBUG(DBG_PROBE, "success");
1506 }
1507
1508
1509 /*********************** usb interface **********************************/
1510
1511 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1512 {
1513 int model;
1514
1515 if (usbvision == NULL)
1516 return;
1517
1518 model = usbvision->DevModel;
1519 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1520
1521 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1522 usbvision->Vin_Reg2_Preset =
1523 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1524 } else {
1525 usbvision->Vin_Reg2_Preset = 0;
1526 }
1527
1528 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1529
1530 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1531 usbvision->ctl_input = 0;
1532
1533 /* This should be here to make i2c clients to be able to register */
1534 /* first switch off audio */
1535 usbvision_audio_off(usbvision);
1536 if (!PowerOnAtOpen) {
1537 /* and then power up the noisy tuner */
1538 usbvision_power_on(usbvision);
1539 usbvision_i2c_register(usbvision);
1540 }
1541 }
1542
1543 /*
1544 * usbvision_probe()
1545 *
1546 * This procedure queries device descriptor and accepts the interface
1547 * if it looks like USBVISION video device
1548 *
1549 */
1550 static int __devinit usbvision_probe(struct usb_interface *intf,
1551 const struct usb_device_id *devid)
1552 {
1553 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1554 struct usb_interface *uif;
1555 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1556 const struct usb_host_interface *interface;
1557 struct usb_usbvision *usbvision = NULL;
1558 const struct usb_endpoint_descriptor *endpoint;
1559 int model,i;
1560
1561 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1562 dev->descriptor.idVendor,
1563 dev->descriptor.idProduct, ifnum);
1564
1565 model = devid->driver_info;
1566 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1567 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1568 return -ENODEV;
1569 }
1570 printk(KERN_INFO "%s: %s found\n", __func__,
1571 usbvision_device_data[model].ModelString);
1572
1573 if (usbvision_device_data[model].Interface >= 0) {
1574 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1575 } else {
1576 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1577 }
1578 endpoint = &interface->endpoint[1].desc;
1579 if (!usb_endpoint_xfer_isoc(endpoint)) {
1580 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1581 __func__, ifnum);
1582 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1583 __func__, endpoint->bmAttributes);
1584 return -ENODEV;
1585 }
1586 if (usb_endpoint_dir_out(endpoint)) {
1587 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1588 __func__, ifnum);
1589 return -ENODEV;
1590 }
1591
1592 usbvision = usbvision_alloc(dev, intf);
1593 if (usbvision == NULL) {
1594 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1595 return -ENOMEM;
1596 }
1597
1598 if (dev->descriptor.bNumConfigurations > 1) {
1599 usbvision->bridgeType = BRIDGE_NT1004;
1600 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1601 usbvision->bridgeType = BRIDGE_NT1005;
1602 } else {
1603 usbvision->bridgeType = BRIDGE_NT1003;
1604 }
1605 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1606
1607 mutex_lock(&usbvision->lock);
1608
1609 /* compute alternate max packet sizes */
1610 uif = dev->actconfig->interface[0];
1611
1612 usbvision->num_alt=uif->num_altsetting;
1613 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1614 usbvision->alt_max_pkt_size = kmalloc(32*
1615 usbvision->num_alt,GFP_KERNEL);
1616 if (usbvision->alt_max_pkt_size == NULL) {
1617 dev_err(&intf->dev, "usbvision: out of memory!\n");
1618 mutex_unlock(&usbvision->lock);
1619 return -ENOMEM;
1620 }
1621
1622 for (i = 0; i < usbvision->num_alt ; i++) {
1623 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1624 wMaxPacketSize);
1625 usbvision->alt_max_pkt_size[i] =
1626 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1627 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1628 usbvision->alt_max_pkt_size[i]);
1629 }
1630
1631
1632 usbvision->nr = usbvision_nr++;
1633
1634 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1635 if (usbvision->have_tuner) {
1636 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1637 }
1638
1639 usbvision->DevModel = model;
1640 usbvision->remove_pending = 0;
1641 usbvision->iface = ifnum;
1642 usbvision->ifaceAlt = 0;
1643 usbvision->video_endp = endpoint->bEndpointAddress;
1644 usbvision->isocPacketSize = 0;
1645 usbvision->usb_bandwidth = 0;
1646 usbvision->user = 0;
1647 usbvision->streaming = Stream_Off;
1648 usbvision_register_video(usbvision);
1649 usbvision_configure_video(usbvision);
1650 mutex_unlock(&usbvision->lock);
1651
1652 usbvision_create_sysfs(usbvision->vdev);
1653
1654 PDEBUG(DBG_PROBE, "success");
1655 return 0;
1656 }
1657
1658
1659 /*
1660 * usbvision_disconnect()
1661 *
1662 * This procedure stops all driver activity, deallocates interface-private
1663 * structure (pointed by 'ptr') and after that driver should be removable
1664 * with no ill consequences.
1665 *
1666 */
1667 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1668 {
1669 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1670
1671 PDEBUG(DBG_PROBE, "");
1672
1673 if (usbvision == NULL) {
1674 dev_err(&usbvision->dev->dev,
1675 "%s: usb_get_intfdata() failed\n", __func__);
1676 return;
1677 }
1678
1679 mutex_lock(&usbvision->lock);
1680
1681 // At this time we ask to cancel outstanding URBs
1682 usbvision_stop_isoc(usbvision);
1683
1684 v4l2_device_disconnect(&usbvision->v4l2_dev);
1685
1686 if (usbvision->power) {
1687 usbvision_i2c_unregister(usbvision);
1688 usbvision_power_off(usbvision);
1689 }
1690 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1691
1692 usb_put_dev(usbvision->dev);
1693 usbvision->dev = NULL; // USB device is no more
1694
1695 mutex_unlock(&usbvision->lock);
1696
1697 if (usbvision->user) {
1698 printk(KERN_INFO "%s: In use, disconnect pending\n",
1699 __func__);
1700 wake_up_interruptible(&usbvision->wait_frame);
1701 wake_up_interruptible(&usbvision->wait_stream);
1702 } else {
1703 usbvision_release(usbvision);
1704 }
1705
1706 PDEBUG(DBG_PROBE, "success");
1707 }
1708
1709 static struct usb_driver usbvision_driver = {
1710 .name = "usbvision",
1711 .id_table = usbvision_table,
1712 .probe = usbvision_probe,
1713 .disconnect = __devexit_p(usbvision_disconnect),
1714 };
1715
1716 /*
1717 * usbvision_init()
1718 *
1719 * This code is run to initialize the driver.
1720 *
1721 */
1722 static int __init usbvision_init(void)
1723 {
1724 int errCode;
1725
1726 PDEBUG(DBG_PROBE, "");
1727
1728 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1729 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1730 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1731
1732 /* disable planar mode support unless compression enabled */
1733 if (isocMode != ISOC_MODE_COMPRESS ) {
1734 // FIXME : not the right way to set supported flag
1735 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1736 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1737 }
1738
1739 errCode = usb_register(&usbvision_driver);
1740
1741 if (errCode == 0) {
1742 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1743 PDEBUG(DBG_PROBE, "success");
1744 }
1745 return errCode;
1746 }
1747
1748 static void __exit usbvision_exit(void)
1749 {
1750 PDEBUG(DBG_PROBE, "");
1751
1752 usb_deregister(&usbvision_driver);
1753 PDEBUG(DBG_PROBE, "success");
1754 }
1755
1756 module_init(usbvision_init);
1757 module_exit(usbvision_exit);
1758
1759 /*
1760 * Overrides for Emacs so that we follow Linus's tabbing style.
1761 * ---------------------------------------------------------------------------
1762 * Local variables:
1763 * c-basic-offset: 8
1764 * End:
1765 */
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