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[media] usbvision: convert to unlocked_ioctl
[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/mm.h>
54 #include <linux/highmem.h>
55 #include <linux/vmalloc.h>
56 #include <linux/module.h>
57 #include <linux/init.h>
58 #include <linux/spinlock.h>
59 #include <asm/io.h>
60 #include <linux/videodev2.h>
61 #include <linux/i2c.h>
62
63 #include <media/saa7115.h>
64 #include <media/v4l2-common.h>
65 #include <media/v4l2-ioctl.h>
66 #include <media/tuner.h>
67
68 #include <linux/workqueue.h>
69
70 #include "usbvision.h"
71 #include "usbvision-cards.h"
72
73 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
74 Dwaine Garden <DwaineGarden@rogers.com>"
75 #define DRIVER_NAME "usbvision"
76 #define DRIVER_ALIAS "USBVision"
77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
78 #define DRIVER_LICENSE "GPL"
79 #define USBVISION_DRIVER_VERSION_MAJOR 0
80 #define USBVISION_DRIVER_VERSION_MINOR 9
81 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
82 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
83 USBVISION_DRIVER_VERSION_MINOR,\
84 USBVISION_DRIVER_VERSION_PATCHLEVEL)
85 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
86 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
87 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
88
89 #define ENABLE_HEXDUMP 0 /* Enable if you need it */
90
91
92 #ifdef USBVISION_DEBUG
93 #define PDEBUG(level, fmt, args...) { \
94 if (video_debug & (level)) \
95 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
96 __func__, __LINE__ , ## args); \
97 }
98 #else
99 #define PDEBUG(level, fmt, args...) do {} while(0)
100 #endif
101
102 #define DBG_IO 1<<1
103 #define DBG_PROBE 1<<2
104 #define DBG_MMAP 1<<3
105
106 //String operations
107 #define rmspace(str) while(*str==' ') str++;
108 #define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
109
110
111 /* sequential number of usbvision device */
112 static int usbvision_nr;
113
114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
115 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
116 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
117 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
118 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
119 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
120 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
121 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
122 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
123 };
124
125 /* Function prototypes */
126 static void usbvision_release(struct usb_usbvision *usbvision);
127
128 /* Default initialization of device driver parameters */
129 /* Set the default format for ISOC endpoint */
130 static int isocMode = ISOC_MODE_COMPRESS;
131 /* Set the default Debug Mode of the device driver */
132 static int video_debug;
133 /* Set the default device to power on at startup */
134 static int PowerOnAtOpen = 1;
135 /* Sequential Number of Video Device */
136 static int video_nr = -1;
137 /* Sequential Number of Radio Device */
138 static int radio_nr = -1;
139
140 /* Grab parameters for the device driver */
141
142 /* Showing parameters under SYSFS */
143 module_param(isocMode, int, 0444);
144 module_param(video_debug, int, 0444);
145 module_param(PowerOnAtOpen, int, 0444);
146 module_param(video_nr, int, 0444);
147 module_param(radio_nr, int, 0444);
148
149 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
150 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
151 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
152 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
153 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
154
155
156 // Misc stuff
157 MODULE_AUTHOR(DRIVER_AUTHOR);
158 MODULE_DESCRIPTION(DRIVER_DESC);
159 MODULE_LICENSE(DRIVER_LICENSE);
160 MODULE_VERSION(USBVISION_VERSION_STRING);
161 MODULE_ALIAS(DRIVER_ALIAS);
162
163
164 /*****************************************************************************/
165 /* SYSFS Code - Copied from the stv680.c usb module. */
166 /* Device information is located at /sys/class/video4linux/video0 */
167 /* Device parameters information is located at /sys/module/usbvision */
168 /* Device USB Information is located at */
169 /* /sys/bus/usb/drivers/USBVision Video Grabber */
170 /*****************************************************************************/
171
172 #define YES_NO(x) ((x) ? "Yes" : "No")
173
174 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
175 {
176 struct video_device *vdev =
177 container_of(cd, struct video_device, dev);
178 return video_get_drvdata(vdev);
179 }
180
181 static ssize_t show_version(struct device *cd,
182 struct device_attribute *attr, char *buf)
183 {
184 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
185 }
186 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
187
188 static ssize_t show_model(struct device *cd,
189 struct device_attribute *attr, char *buf)
190 {
191 struct video_device *vdev =
192 container_of(cd, struct video_device, dev);
193 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
194 return sprintf(buf, "%s\n",
195 usbvision_device_data[usbvision->DevModel].ModelString);
196 }
197 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
198
199 static ssize_t show_hue(struct device *cd,
200 struct device_attribute *attr, char *buf)
201 {
202 struct video_device *vdev =
203 container_of(cd, struct video_device, dev);
204 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
205 struct v4l2_control ctrl;
206 ctrl.id = V4L2_CID_HUE;
207 ctrl.value = 0;
208 if(usbvision->user)
209 call_all(usbvision, core, g_ctrl, &ctrl);
210 return sprintf(buf, "%d\n", ctrl.value);
211 }
212 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
213
214 static ssize_t show_contrast(struct device *cd,
215 struct device_attribute *attr, char *buf)
216 {
217 struct video_device *vdev =
218 container_of(cd, struct video_device, dev);
219 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
220 struct v4l2_control ctrl;
221 ctrl.id = V4L2_CID_CONTRAST;
222 ctrl.value = 0;
223 if(usbvision->user)
224 call_all(usbvision, core, g_ctrl, &ctrl);
225 return sprintf(buf, "%d\n", ctrl.value);
226 }
227 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
228
229 static ssize_t show_brightness(struct device *cd,
230 struct device_attribute *attr, char *buf)
231 {
232 struct video_device *vdev =
233 container_of(cd, struct video_device, dev);
234 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
235 struct v4l2_control ctrl;
236 ctrl.id = V4L2_CID_BRIGHTNESS;
237 ctrl.value = 0;
238 if(usbvision->user)
239 call_all(usbvision, core, g_ctrl, &ctrl);
240 return sprintf(buf, "%d\n", ctrl.value);
241 }
242 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
243
244 static ssize_t show_saturation(struct device *cd,
245 struct device_attribute *attr, char *buf)
246 {
247 struct video_device *vdev =
248 container_of(cd, struct video_device, dev);
249 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
250 struct v4l2_control ctrl;
251 ctrl.id = V4L2_CID_SATURATION;
252 ctrl.value = 0;
253 if(usbvision->user)
254 call_all(usbvision, core, g_ctrl, &ctrl);
255 return sprintf(buf, "%d\n", ctrl.value);
256 }
257 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
258
259 static ssize_t show_streaming(struct device *cd,
260 struct device_attribute *attr, char *buf)
261 {
262 struct video_device *vdev =
263 container_of(cd, struct video_device, dev);
264 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
265 return sprintf(buf, "%s\n",
266 YES_NO(usbvision->streaming==Stream_On?1:0));
267 }
268 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
269
270 static ssize_t show_compression(struct device *cd,
271 struct device_attribute *attr, char *buf)
272 {
273 struct video_device *vdev =
274 container_of(cd, struct video_device, dev);
275 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
276 return sprintf(buf, "%s\n",
277 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
278 }
279 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
280
281 static ssize_t show_device_bridge(struct device *cd,
282 struct device_attribute *attr, char *buf)
283 {
284 struct video_device *vdev =
285 container_of(cd, struct video_device, dev);
286 struct usb_usbvision *usbvision = video_get_drvdata(vdev);
287 return sprintf(buf, "%d\n", usbvision->bridgeType);
288 }
289 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
290
291 static void usbvision_create_sysfs(struct video_device *vdev)
292 {
293 int res;
294 if (!vdev)
295 return;
296 do {
297 res = device_create_file(&vdev->dev, &dev_attr_version);
298 if (res<0)
299 break;
300 res = device_create_file(&vdev->dev, &dev_attr_model);
301 if (res<0)
302 break;
303 res = device_create_file(&vdev->dev, &dev_attr_hue);
304 if (res<0)
305 break;
306 res = device_create_file(&vdev->dev, &dev_attr_contrast);
307 if (res<0)
308 break;
309 res = device_create_file(&vdev->dev, &dev_attr_brightness);
310 if (res<0)
311 break;
312 res = device_create_file(&vdev->dev, &dev_attr_saturation);
313 if (res<0)
314 break;
315 res = device_create_file(&vdev->dev, &dev_attr_streaming);
316 if (res<0)
317 break;
318 res = device_create_file(&vdev->dev, &dev_attr_compression);
319 if (res<0)
320 break;
321 res = device_create_file(&vdev->dev, &dev_attr_bridge);
322 if (res>=0)
323 return;
324 } while (0);
325
326 dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
327 }
328
329 static void usbvision_remove_sysfs(struct video_device *vdev)
330 {
331 if (vdev) {
332 device_remove_file(&vdev->dev, &dev_attr_version);
333 device_remove_file(&vdev->dev, &dev_attr_model);
334 device_remove_file(&vdev->dev, &dev_attr_hue);
335 device_remove_file(&vdev->dev, &dev_attr_contrast);
336 device_remove_file(&vdev->dev, &dev_attr_brightness);
337 device_remove_file(&vdev->dev, &dev_attr_saturation);
338 device_remove_file(&vdev->dev, &dev_attr_streaming);
339 device_remove_file(&vdev->dev, &dev_attr_compression);
340 device_remove_file(&vdev->dev, &dev_attr_bridge);
341 }
342 }
343
344 /*
345 * usbvision_open()
346 *
347 * This is part of Video 4 Linux API. The driver can be opened by one
348 * client only (checks internal counter 'usbvision->user'). The procedure
349 * then allocates buffers needed for video processing.
350 *
351 */
352 static int usbvision_v4l2_open(struct file *file)
353 {
354 struct usb_usbvision *usbvision = video_drvdata(file);
355 int errCode = 0;
356
357 PDEBUG(DBG_IO, "open");
358
359 usbvision_reset_powerOffTimer(usbvision);
360
361 if (usbvision->user)
362 errCode = -EBUSY;
363 else {
364 /* Allocate memory for the scratch ring buffer */
365 errCode = usbvision_scratch_alloc(usbvision);
366 if (isocMode==ISOC_MODE_COMPRESS) {
367 /* Allocate intermediate decompression buffers
368 only if needed */
369 errCode = usbvision_decompress_alloc(usbvision);
370 }
371 if (errCode) {
372 /* Deallocate all buffers if trouble */
373 usbvision_scratch_free(usbvision);
374 usbvision_decompress_free(usbvision);
375 }
376 }
377
378 /* If so far no errors then we shall start the camera */
379 if (!errCode) {
380 if (usbvision->power == 0) {
381 usbvision_power_on(usbvision);
382 usbvision_i2c_register(usbvision);
383 }
384
385 /* Send init sequence only once, it's large! */
386 if (!usbvision->initialized) {
387 int setup_ok = 0;
388 setup_ok = usbvision_setup(usbvision,isocMode);
389 if (setup_ok)
390 usbvision->initialized = 1;
391 else
392 errCode = -EBUSY;
393 }
394
395 if (!errCode) {
396 usbvision_begin_streaming(usbvision);
397 errCode = usbvision_init_isoc(usbvision);
398 /* device must be initialized before isoc transfer */
399 usbvision_muxsel(usbvision,0);
400 usbvision->user++;
401 } else {
402 if (PowerOnAtOpen) {
403 usbvision_i2c_unregister(usbvision);
404 usbvision_power_off(usbvision);
405 usbvision->initialized = 0;
406 }
407 }
408 }
409
410 /* prepare queues */
411 usbvision_empty_framequeues(usbvision);
412
413 PDEBUG(DBG_IO, "success");
414 return errCode;
415 }
416
417 /*
418 * usbvision_v4l2_close()
419 *
420 * This is part of Video 4 Linux API. The procedure
421 * stops streaming and deallocates all buffers that were earlier
422 * allocated in usbvision_v4l2_open().
423 *
424 */
425 static int usbvision_v4l2_close(struct file *file)
426 {
427 struct usb_usbvision *usbvision = video_drvdata(file);
428
429 PDEBUG(DBG_IO, "close");
430
431 usbvision_audio_off(usbvision);
432 usbvision_restart_isoc(usbvision);
433 usbvision_stop_isoc(usbvision);
434
435 usbvision_decompress_free(usbvision);
436 usbvision_frames_free(usbvision);
437 usbvision_empty_framequeues(usbvision);
438 usbvision_scratch_free(usbvision);
439
440 usbvision->user--;
441
442 if (PowerOnAtOpen) {
443 /* power off in a little while
444 to avoid off/on every close/open short sequences */
445 usbvision_set_powerOffTimer(usbvision);
446 usbvision->initialized = 0;
447 }
448
449 if (usbvision->remove_pending) {
450 printk(KERN_INFO "%s: Final disconnect\n", __func__);
451 usbvision_release(usbvision);
452 }
453
454 PDEBUG(DBG_IO, "success");
455 return 0;
456 }
457
458
459 /*
460 * usbvision_ioctl()
461 *
462 * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
463 *
464 */
465 #ifdef CONFIG_VIDEO_ADV_DEBUG
466 static int vidioc_g_register (struct file *file, void *priv,
467 struct v4l2_dbg_register *reg)
468 {
469 struct usb_usbvision *usbvision = video_drvdata(file);
470 int errCode;
471
472 if (!v4l2_chip_match_host(&reg->match))
473 return -EINVAL;
474 /* NT100x has a 8-bit register space */
475 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
476 if (errCode < 0) {
477 dev_err(&usbvision->vdev->dev,
478 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
479 __func__, errCode);
480 return errCode;
481 }
482 reg->val = errCode;
483 reg->size = 1;
484 return 0;
485 }
486
487 static int vidioc_s_register (struct file *file, void *priv,
488 struct v4l2_dbg_register *reg)
489 {
490 struct usb_usbvision *usbvision = video_drvdata(file);
491 int errCode;
492
493 if (!v4l2_chip_match_host(&reg->match))
494 return -EINVAL;
495 /* NT100x has a 8-bit register space */
496 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
497 if (errCode < 0) {
498 dev_err(&usbvision->vdev->dev,
499 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
500 __func__, errCode);
501 return errCode;
502 }
503 return 0;
504 }
505 #endif
506
507 static int vidioc_querycap (struct file *file, void *priv,
508 struct v4l2_capability *vc)
509 {
510 struct usb_usbvision *usbvision = video_drvdata(file);
511
512 strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
513 strlcpy(vc->card,
514 usbvision_device_data[usbvision->DevModel].ModelString,
515 sizeof(vc->card));
516 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
517 vc->version = USBVISION_DRIVER_VERSION;
518 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
519 V4L2_CAP_AUDIO |
520 V4L2_CAP_READWRITE |
521 V4L2_CAP_STREAMING |
522 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
523 return 0;
524 }
525
526 static int vidioc_enum_input (struct file *file, void *priv,
527 struct v4l2_input *vi)
528 {
529 struct usb_usbvision *usbvision = video_drvdata(file);
530 int chan;
531
532 if (vi->index >= usbvision->video_inputs)
533 return -EINVAL;
534 if (usbvision->have_tuner) {
535 chan = vi->index;
536 } else {
537 chan = vi->index + 1; /*skip Television string*/
538 }
539 /* Determine the requested input characteristics
540 specific for each usbvision card model */
541 switch(chan) {
542 case 0:
543 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
544 strcpy(vi->name, "White Video Input");
545 } else {
546 strcpy(vi->name, "Television");
547 vi->type = V4L2_INPUT_TYPE_TUNER;
548 vi->audioset = 1;
549 vi->tuner = chan;
550 vi->std = USBVISION_NORMS;
551 }
552 break;
553 case 1:
554 vi->type = V4L2_INPUT_TYPE_CAMERA;
555 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
556 strcpy(vi->name, "Green Video Input");
557 } else {
558 strcpy(vi->name, "Composite Video Input");
559 }
560 vi->std = V4L2_STD_PAL;
561 break;
562 case 2:
563 vi->type = V4L2_INPUT_TYPE_CAMERA;
564 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
565 strcpy(vi->name, "Yellow Video Input");
566 } else {
567 strcpy(vi->name, "S-Video Input");
568 }
569 vi->std = V4L2_STD_PAL;
570 break;
571 case 3:
572 vi->type = V4L2_INPUT_TYPE_CAMERA;
573 strcpy(vi->name, "Red Video Input");
574 vi->std = V4L2_STD_PAL;
575 break;
576 }
577 return 0;
578 }
579
580 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
581 {
582 struct usb_usbvision *usbvision = video_drvdata(file);
583
584 *input = usbvision->ctl_input;
585 return 0;
586 }
587
588 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
589 {
590 struct usb_usbvision *usbvision = video_drvdata(file);
591
592 if (input >= usbvision->video_inputs)
593 return -EINVAL;
594
595 usbvision_muxsel(usbvision, input);
596 usbvision_set_input(usbvision);
597 usbvision_set_output(usbvision,
598 usbvision->curwidth,
599 usbvision->curheight);
600 return 0;
601 }
602
603 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
604 {
605 struct usb_usbvision *usbvision = video_drvdata(file);
606
607 usbvision->tvnormId=*id;
608
609 call_all(usbvision, core, s_std, usbvision->tvnormId);
610 /* propagate the change to the decoder */
611 usbvision_muxsel(usbvision, usbvision->ctl_input);
612
613 return 0;
614 }
615
616 static int vidioc_g_tuner (struct file *file, void *priv,
617 struct v4l2_tuner *vt)
618 {
619 struct usb_usbvision *usbvision = video_drvdata(file);
620
621 if (!usbvision->have_tuner || vt->index) // Only tuner 0
622 return -EINVAL;
623 if(usbvision->radio) {
624 strcpy(vt->name, "Radio");
625 vt->type = V4L2_TUNER_RADIO;
626 } else {
627 strcpy(vt->name, "Television");
628 }
629 /* Let clients fill in the remainder of this struct */
630 call_all(usbvision, tuner, g_tuner, vt);
631
632 return 0;
633 }
634
635 static int vidioc_s_tuner (struct file *file, void *priv,
636 struct v4l2_tuner *vt)
637 {
638 struct usb_usbvision *usbvision = video_drvdata(file);
639
640 // Only no or one tuner for now
641 if (!usbvision->have_tuner || vt->index)
642 return -EINVAL;
643 /* let clients handle this */
644 call_all(usbvision, tuner, s_tuner, vt);
645
646 return 0;
647 }
648
649 static int vidioc_g_frequency (struct file *file, void *priv,
650 struct v4l2_frequency *freq)
651 {
652 struct usb_usbvision *usbvision = video_drvdata(file);
653
654 freq->tuner = 0; // Only one tuner
655 if(usbvision->radio) {
656 freq->type = V4L2_TUNER_RADIO;
657 } else {
658 freq->type = V4L2_TUNER_ANALOG_TV;
659 }
660 freq->frequency = usbvision->freq;
661
662 return 0;
663 }
664
665 static int vidioc_s_frequency (struct file *file, void *priv,
666 struct v4l2_frequency *freq)
667 {
668 struct usb_usbvision *usbvision = video_drvdata(file);
669
670 // Only no or one tuner for now
671 if (!usbvision->have_tuner || freq->tuner)
672 return -EINVAL;
673
674 usbvision->freq = freq->frequency;
675 call_all(usbvision, tuner, s_frequency, freq);
676
677 return 0;
678 }
679
680 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
681 {
682 struct usb_usbvision *usbvision = video_drvdata(file);
683
684 if(usbvision->radio) {
685 strcpy(a->name,"Radio");
686 } else {
687 strcpy(a->name, "TV");
688 }
689
690 return 0;
691 }
692
693 static int vidioc_s_audio (struct file *file, void *fh,
694 struct v4l2_audio *a)
695 {
696 if(a->index) {
697 return -EINVAL;
698 }
699
700 return 0;
701 }
702
703 static int vidioc_queryctrl (struct file *file, void *priv,
704 struct v4l2_queryctrl *ctrl)
705 {
706 struct usb_usbvision *usbvision = video_drvdata(file);
707
708 call_all(usbvision, core, queryctrl, ctrl);
709
710 if (!ctrl->type)
711 return -EINVAL;
712
713 return 0;
714 }
715
716 static int vidioc_g_ctrl (struct file *file, void *priv,
717 struct v4l2_control *ctrl)
718 {
719 struct usb_usbvision *usbvision = video_drvdata(file);
720 call_all(usbvision, core, g_ctrl, ctrl);
721
722 return 0;
723 }
724
725 static int vidioc_s_ctrl (struct file *file, void *priv,
726 struct v4l2_control *ctrl)
727 {
728 struct usb_usbvision *usbvision = video_drvdata(file);
729 call_all(usbvision, core, s_ctrl, ctrl);
730
731 return 0;
732 }
733
734 static int vidioc_reqbufs (struct file *file,
735 void *priv, struct v4l2_requestbuffers *vr)
736 {
737 struct usb_usbvision *usbvision = video_drvdata(file);
738 int ret;
739
740 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
741
742 /* Check input validity:
743 the user must do a VIDEO CAPTURE and MMAP method. */
744 if (vr->memory != V4L2_MEMORY_MMAP)
745 return -EINVAL;
746
747 if(usbvision->streaming == Stream_On) {
748 if ((ret = usbvision_stream_interrupt(usbvision)))
749 return ret;
750 }
751
752 usbvision_frames_free(usbvision);
753 usbvision_empty_framequeues(usbvision);
754 vr->count = usbvision_frames_alloc(usbvision,vr->count);
755
756 usbvision->curFrame = NULL;
757
758 return 0;
759 }
760
761 static int vidioc_querybuf (struct file *file,
762 void *priv, struct v4l2_buffer *vb)
763 {
764 struct usb_usbvision *usbvision = video_drvdata(file);
765 struct usbvision_frame *frame;
766
767 /* FIXME : must control
768 that buffers are mapped (VIDIOC_REQBUFS has been called) */
769 if(vb->index>=usbvision->num_frames) {
770 return -EINVAL;
771 }
772 /* Updating the corresponding frame state */
773 vb->flags = 0;
774 frame = &usbvision->frame[vb->index];
775 if(frame->grabstate >= FrameState_Ready)
776 vb->flags |= V4L2_BUF_FLAG_QUEUED;
777 if(frame->grabstate >= FrameState_Done)
778 vb->flags |= V4L2_BUF_FLAG_DONE;
779 if(frame->grabstate == FrameState_Unused)
780 vb->flags |= V4L2_BUF_FLAG_MAPPED;
781 vb->memory = V4L2_MEMORY_MMAP;
782
783 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
784
785 vb->memory = V4L2_MEMORY_MMAP;
786 vb->field = V4L2_FIELD_NONE;
787 vb->length = usbvision->curwidth*
788 usbvision->curheight*
789 usbvision->palette.bytes_per_pixel;
790 vb->timestamp = usbvision->frame[vb->index].timestamp;
791 vb->sequence = usbvision->frame[vb->index].sequence;
792 return 0;
793 }
794
795 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
796 {
797 struct usb_usbvision *usbvision = video_drvdata(file);
798 struct usbvision_frame *frame;
799 unsigned long lock_flags;
800
801 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
802 if(vb->index>=usbvision->num_frames) {
803 return -EINVAL;
804 }
805
806 frame = &usbvision->frame[vb->index];
807
808 if (frame->grabstate != FrameState_Unused) {
809 return -EAGAIN;
810 }
811
812 /* Mark it as ready and enqueue frame */
813 frame->grabstate = FrameState_Ready;
814 frame->scanstate = ScanState_Scanning;
815 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
816
817 vb->flags &= ~V4L2_BUF_FLAG_DONE;
818
819 /* set v4l2_format index */
820 frame->v4l2_format = usbvision->palette;
821
822 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
823 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
824 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
825
826 return 0;
827 }
828
829 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
830 {
831 struct usb_usbvision *usbvision = video_drvdata(file);
832 int ret;
833 struct usbvision_frame *f;
834 unsigned long lock_flags;
835
836 if (list_empty(&(usbvision->outqueue))) {
837 if (usbvision->streaming == Stream_Idle)
838 return -EINVAL;
839 ret = wait_event_interruptible
840 (usbvision->wait_frame,
841 !list_empty(&(usbvision->outqueue)));
842 if (ret)
843 return ret;
844 }
845
846 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
847 f = list_entry(usbvision->outqueue.next,
848 struct usbvision_frame, frame);
849 list_del(usbvision->outqueue.next);
850 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
851
852 f->grabstate = FrameState_Unused;
853
854 vb->memory = V4L2_MEMORY_MMAP;
855 vb->flags = V4L2_BUF_FLAG_MAPPED |
856 V4L2_BUF_FLAG_QUEUED |
857 V4L2_BUF_FLAG_DONE;
858 vb->index = f->index;
859 vb->sequence = f->sequence;
860 vb->timestamp = f->timestamp;
861 vb->field = V4L2_FIELD_NONE;
862 vb->bytesused = f->scanlength;
863
864 return 0;
865 }
866
867 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
868 {
869 struct usb_usbvision *usbvision = video_drvdata(file);
870
871 usbvision->streaming = Stream_On;
872 call_all(usbvision, video, s_stream, 1);
873
874 return 0;
875 }
876
877 static int vidioc_streamoff(struct file *file,
878 void *priv, enum v4l2_buf_type type)
879 {
880 struct usb_usbvision *usbvision = video_drvdata(file);
881
882 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
883 return -EINVAL;
884
885 if(usbvision->streaming == Stream_On) {
886 usbvision_stream_interrupt(usbvision);
887 /* Stop all video streamings */
888 call_all(usbvision, video, s_stream, 0);
889 }
890 usbvision_empty_framequeues(usbvision);
891
892 return 0;
893 }
894
895 static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
896 struct v4l2_fmtdesc *vfd)
897 {
898 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
899 return -EINVAL;
900 }
901 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
902 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
903 return 0;
904 }
905
906 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
907 struct v4l2_format *vf)
908 {
909 struct usb_usbvision *usbvision = video_drvdata(file);
910 vf->fmt.pix.width = usbvision->curwidth;
911 vf->fmt.pix.height = usbvision->curheight;
912 vf->fmt.pix.pixelformat = usbvision->palette.format;
913 vf->fmt.pix.bytesperline =
914 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
915 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
916 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
917 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
918
919 return 0;
920 }
921
922 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
923 struct v4l2_format *vf)
924 {
925 struct usb_usbvision *usbvision = video_drvdata(file);
926 int formatIdx;
927
928 /* Find requested format in available ones */
929 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
930 if(vf->fmt.pix.pixelformat ==
931 usbvision_v4l2_format[formatIdx].format) {
932 usbvision->palette = usbvision_v4l2_format[formatIdx];
933 break;
934 }
935 }
936 /* robustness */
937 if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
938 return -EINVAL;
939 }
940 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
941 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
942
943 vf->fmt.pix.bytesperline = vf->fmt.pix.width*
944 usbvision->palette.bytes_per_pixel;
945 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
946
947 return 0;
948 }
949
950 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
951 struct v4l2_format *vf)
952 {
953 struct usb_usbvision *usbvision = video_drvdata(file);
954 int ret;
955
956 if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
957 return ret;
958 }
959
960 /* stop io in case it is already in progress */
961 if(usbvision->streaming == Stream_On) {
962 if ((ret = usbvision_stream_interrupt(usbvision)))
963 return ret;
964 }
965 usbvision_frames_free(usbvision);
966 usbvision_empty_framequeues(usbvision);
967
968 usbvision->curFrame = NULL;
969
970 /* by now we are committed to the new data... */
971 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
972
973 return 0;
974 }
975
976 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
977 size_t count, loff_t *ppos)
978 {
979 struct usb_usbvision *usbvision = video_drvdata(file);
980 int noblock = file->f_flags & O_NONBLOCK;
981 unsigned long lock_flags;
982
983 int ret,i;
984 struct usbvision_frame *frame;
985
986 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
987 (unsigned long)count, noblock);
988
989 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
990 return -EFAULT;
991
992 /* This entry point is compatible with the mmap routines
993 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
994 to get frames or call read on the device. */
995 if(!usbvision->num_frames) {
996 /* First, allocate some frames to work with
997 if this has not been done with VIDIOC_REQBUF */
998 usbvision_frames_free(usbvision);
999 usbvision_empty_framequeues(usbvision);
1000 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1001 }
1002
1003 if(usbvision->streaming != Stream_On) {
1004 /* no stream is running, make it running ! */
1005 usbvision->streaming = Stream_On;
1006 call_all(usbvision, video, s_stream, 1);
1007 }
1008
1009 /* Then, enqueue as many frames as possible
1010 (like a user of VIDIOC_QBUF would do) */
1011 for(i=0;i<usbvision->num_frames;i++) {
1012 frame = &usbvision->frame[i];
1013 if(frame->grabstate == FrameState_Unused) {
1014 /* Mark it as ready and enqueue frame */
1015 frame->grabstate = FrameState_Ready;
1016 frame->scanstate = ScanState_Scanning;
1017 /* Accumulated in usbvision_parse_data() */
1018 frame->scanlength = 0;
1019
1020 /* set v4l2_format index */
1021 frame->v4l2_format = usbvision->palette;
1022
1023 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1024 list_add_tail(&frame->frame, &usbvision->inqueue);
1025 spin_unlock_irqrestore(&usbvision->queue_lock,
1026 lock_flags);
1027 }
1028 }
1029
1030 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1031 if (list_empty(&(usbvision->outqueue))) {
1032 if(noblock)
1033 return -EAGAIN;
1034
1035 ret = wait_event_interruptible
1036 (usbvision->wait_frame,
1037 !list_empty(&(usbvision->outqueue)));
1038 if (ret)
1039 return ret;
1040 }
1041
1042 spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1043 frame = list_entry(usbvision->outqueue.next,
1044 struct usbvision_frame, frame);
1045 list_del(usbvision->outqueue.next);
1046 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1047
1048 /* An error returns an empty frame */
1049 if (frame->grabstate == FrameState_Error) {
1050 frame->bytes_read = 0;
1051 return 0;
1052 }
1053
1054 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1055 __func__,
1056 frame->index, frame->bytes_read, frame->scanlength);
1057
1058 /* copy bytes to user space; we allow for partials reads */
1059 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1060 count = frame->scanlength - frame->bytes_read;
1061
1062 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1063 return -EFAULT;
1064 }
1065
1066 frame->bytes_read += count;
1067 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1068 __func__,
1069 (unsigned long)count, frame->bytes_read);
1070
1071 /* For now, forget the frame if it has not been read in one shot. */
1072 /* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1073 frame->bytes_read = 0;
1074
1075 /* Mark it as available to be used again. */
1076 frame->grabstate = FrameState_Unused;
1077 /* } */
1078
1079 return count;
1080 }
1081
1082 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1083 {
1084 unsigned long size = vma->vm_end - vma->vm_start,
1085 start = vma->vm_start;
1086 void *pos;
1087 u32 i;
1088 struct usb_usbvision *usbvision = video_drvdata(file);
1089
1090 PDEBUG(DBG_MMAP, "mmap");
1091
1092 if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1093 return -EFAULT;
1094 }
1095
1096 if (!(vma->vm_flags & VM_WRITE) ||
1097 size != PAGE_ALIGN(usbvision->max_frame_size)) {
1098 return -EINVAL;
1099 }
1100
1101 for (i = 0; i < usbvision->num_frames; i++) {
1102 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1103 vma->vm_pgoff)
1104 break;
1105 }
1106 if (i == usbvision->num_frames) {
1107 PDEBUG(DBG_MMAP,
1108 "mmap: user supplied mapping address is out of range");
1109 return -EINVAL;
1110 }
1111
1112 /* VM_IO is eventually going to replace PageReserved altogether */
1113 vma->vm_flags |= VM_IO;
1114 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
1115
1116 pos = usbvision->frame[i].data;
1117 while (size > 0) {
1118
1119 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1120 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1121 return -EAGAIN;
1122 }
1123 start += PAGE_SIZE;
1124 pos += PAGE_SIZE;
1125 size -= PAGE_SIZE;
1126 }
1127
1128 return 0;
1129 }
1130
1131
1132 /*
1133 * Here comes the stuff for radio on usbvision based devices
1134 *
1135 */
1136 static int usbvision_radio_open(struct file *file)
1137 {
1138 struct usb_usbvision *usbvision = video_drvdata(file);
1139 int errCode = 0;
1140
1141 PDEBUG(DBG_IO, "%s:", __func__);
1142
1143 if (usbvision->user) {
1144 dev_err(&usbvision->rdev->dev,
1145 "%s: Someone tried to open an already opened USBVision Radio!\n",
1146 __func__);
1147 errCode = -EBUSY;
1148 }
1149 else {
1150 if(PowerOnAtOpen) {
1151 usbvision_reset_powerOffTimer(usbvision);
1152 if (usbvision->power == 0) {
1153 usbvision_power_on(usbvision);
1154 usbvision_i2c_register(usbvision);
1155 }
1156 }
1157
1158 /* Alternate interface 1 is is the biggest frame size */
1159 errCode = usbvision_set_alternate(usbvision);
1160 if (errCode < 0) {
1161 usbvision->last_error = errCode;
1162 errCode = -EBUSY;
1163 goto out;
1164 }
1165
1166 // If so far no errors then we shall start the radio
1167 usbvision->radio = 1;
1168 call_all(usbvision, tuner, s_radio);
1169 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1170 usbvision->user++;
1171 }
1172
1173 if (errCode) {
1174 if (PowerOnAtOpen) {
1175 usbvision_i2c_unregister(usbvision);
1176 usbvision_power_off(usbvision);
1177 usbvision->initialized = 0;
1178 }
1179 }
1180 out:
1181 return errCode;
1182 }
1183
1184
1185 static int usbvision_radio_close(struct file *file)
1186 {
1187 struct usb_usbvision *usbvision = video_drvdata(file);
1188 int errCode = 0;
1189
1190 PDEBUG(DBG_IO, "");
1191
1192 /* Set packet size to 0 */
1193 usbvision->ifaceAlt=0;
1194 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1195 usbvision->ifaceAlt);
1196
1197 usbvision_audio_off(usbvision);
1198 usbvision->radio=0;
1199 usbvision->user--;
1200
1201 if (PowerOnAtOpen) {
1202 usbvision_set_powerOffTimer(usbvision);
1203 usbvision->initialized = 0;
1204 }
1205
1206 if (usbvision->remove_pending) {
1207 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1208 usbvision_release(usbvision);
1209 }
1210
1211 PDEBUG(DBG_IO, "success");
1212 return errCode;
1213 }
1214
1215 //
1216 // Video registration stuff
1217 //
1218
1219 // Video template
1220 static const struct v4l2_file_operations usbvision_fops = {
1221 .owner = THIS_MODULE,
1222 .open = usbvision_v4l2_open,
1223 .release = usbvision_v4l2_close,
1224 .read = usbvision_v4l2_read,
1225 .mmap = usbvision_v4l2_mmap,
1226 .unlocked_ioctl = video_ioctl2,
1227 /* .poll = video_poll, */
1228 };
1229
1230 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1231 .vidioc_querycap = vidioc_querycap,
1232 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1233 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1234 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1235 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1236 .vidioc_reqbufs = vidioc_reqbufs,
1237 .vidioc_querybuf = vidioc_querybuf,
1238 .vidioc_qbuf = vidioc_qbuf,
1239 .vidioc_dqbuf = vidioc_dqbuf,
1240 .vidioc_s_std = vidioc_s_std,
1241 .vidioc_enum_input = vidioc_enum_input,
1242 .vidioc_g_input = vidioc_g_input,
1243 .vidioc_s_input = vidioc_s_input,
1244 .vidioc_queryctrl = vidioc_queryctrl,
1245 .vidioc_g_audio = vidioc_g_audio,
1246 .vidioc_s_audio = vidioc_s_audio,
1247 .vidioc_g_ctrl = vidioc_g_ctrl,
1248 .vidioc_s_ctrl = vidioc_s_ctrl,
1249 .vidioc_streamon = vidioc_streamon,
1250 .vidioc_streamoff = vidioc_streamoff,
1251 .vidioc_g_tuner = vidioc_g_tuner,
1252 .vidioc_s_tuner = vidioc_s_tuner,
1253 .vidioc_g_frequency = vidioc_g_frequency,
1254 .vidioc_s_frequency = vidioc_s_frequency,
1255 #ifdef CONFIG_VIDEO_ADV_DEBUG
1256 .vidioc_g_register = vidioc_g_register,
1257 .vidioc_s_register = vidioc_s_register,
1258 #endif
1259 };
1260
1261 static struct video_device usbvision_video_template = {
1262 .fops = &usbvision_fops,
1263 .ioctl_ops = &usbvision_ioctl_ops,
1264 .name = "usbvision-video",
1265 .release = video_device_release,
1266 .tvnorms = USBVISION_NORMS,
1267 .current_norm = V4L2_STD_PAL
1268 };
1269
1270
1271 // Radio template
1272 static const struct v4l2_file_operations usbvision_radio_fops = {
1273 .owner = THIS_MODULE,
1274 .open = usbvision_radio_open,
1275 .release = usbvision_radio_close,
1276 .unlocked_ioctl = video_ioctl2,
1277 };
1278
1279 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1280 .vidioc_querycap = vidioc_querycap,
1281 .vidioc_enum_input = vidioc_enum_input,
1282 .vidioc_g_input = vidioc_g_input,
1283 .vidioc_s_input = vidioc_s_input,
1284 .vidioc_queryctrl = vidioc_queryctrl,
1285 .vidioc_g_audio = vidioc_g_audio,
1286 .vidioc_s_audio = vidioc_s_audio,
1287 .vidioc_g_ctrl = vidioc_g_ctrl,
1288 .vidioc_s_ctrl = vidioc_s_ctrl,
1289 .vidioc_g_tuner = vidioc_g_tuner,
1290 .vidioc_s_tuner = vidioc_s_tuner,
1291 .vidioc_g_frequency = vidioc_g_frequency,
1292 .vidioc_s_frequency = vidioc_s_frequency,
1293 };
1294
1295 static struct video_device usbvision_radio_template = {
1296 .fops = &usbvision_radio_fops,
1297 .name = "usbvision-radio",
1298 .release = video_device_release,
1299 .ioctl_ops = &usbvision_radio_ioctl_ops,
1300
1301 .tvnorms = USBVISION_NORMS,
1302 .current_norm = V4L2_STD_PAL
1303 };
1304
1305
1306 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1307 struct video_device *vdev_template,
1308 char *name)
1309 {
1310 struct usb_device *usb_dev = usbvision->dev;
1311 struct video_device *vdev;
1312
1313 if (usb_dev == NULL) {
1314 dev_err(&usbvision->dev->dev,
1315 "%s: usbvision->dev is not set\n", __func__);
1316 return NULL;
1317 }
1318
1319 vdev = video_device_alloc();
1320 if (NULL == vdev) {
1321 return NULL;
1322 }
1323 *vdev = *vdev_template;
1324 vdev->lock = &usbvision->v4l2_lock;
1325 vdev->v4l2_dev = &usbvision->v4l2_dev;
1326 snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1327 video_set_drvdata(vdev, usbvision);
1328 return vdev;
1329 }
1330
1331 // unregister video4linux devices
1332 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1333 {
1334 // Radio Device:
1335 if (usbvision->rdev) {
1336 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1337 video_device_node_name(usbvision->rdev));
1338 if (video_is_registered(usbvision->rdev)) {
1339 video_unregister_device(usbvision->rdev);
1340 } else {
1341 video_device_release(usbvision->rdev);
1342 }
1343 usbvision->rdev = NULL;
1344 }
1345
1346 // Video Device:
1347 if (usbvision->vdev) {
1348 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1349 video_device_node_name(usbvision->vdev));
1350 if (video_is_registered(usbvision->vdev)) {
1351 video_unregister_device(usbvision->vdev);
1352 } else {
1353 video_device_release(usbvision->vdev);
1354 }
1355 usbvision->vdev = NULL;
1356 }
1357 }
1358
1359 // register video4linux devices
1360 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1361 {
1362 // Video Device:
1363 usbvision->vdev = usbvision_vdev_init(usbvision,
1364 &usbvision_video_template,
1365 "USBVision Video");
1366 if (usbvision->vdev == NULL) {
1367 goto err_exit;
1368 }
1369 if (video_register_device(usbvision->vdev,
1370 VFL_TYPE_GRABBER,
1371 video_nr)<0) {
1372 goto err_exit;
1373 }
1374 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1375 usbvision->nr, video_device_node_name(usbvision->vdev));
1376
1377 // Radio Device:
1378 if (usbvision_device_data[usbvision->DevModel].Radio) {
1379 // usbvision has radio
1380 usbvision->rdev = usbvision_vdev_init(usbvision,
1381 &usbvision_radio_template,
1382 "USBVision Radio");
1383 if (usbvision->rdev == NULL) {
1384 goto err_exit;
1385 }
1386 if (video_register_device(usbvision->rdev,
1387 VFL_TYPE_RADIO,
1388 radio_nr)<0) {
1389 goto err_exit;
1390 }
1391 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1392 usbvision->nr, video_device_node_name(usbvision->rdev));
1393 }
1394 // all done
1395 return 0;
1396
1397 err_exit:
1398 dev_err(&usbvision->dev->dev,
1399 "USBVision[%d]: video_register_device() failed\n",
1400 usbvision->nr);
1401 usbvision_unregister_video(usbvision);
1402 return -1;
1403 }
1404
1405 /*
1406 * usbvision_alloc()
1407 *
1408 * This code allocates the struct usb_usbvision.
1409 * It is filled with default values.
1410 *
1411 * Returns NULL on error, a pointer to usb_usbvision else.
1412 *
1413 */
1414 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1415 struct usb_interface *intf)
1416 {
1417 struct usb_usbvision *usbvision;
1418
1419 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1420 if (usbvision == NULL)
1421 return NULL;
1422
1423 usbvision->dev = dev;
1424 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1425 goto err_free;
1426
1427 mutex_init(&usbvision->v4l2_lock);
1428
1429 // prepare control urb for control messages during interrupts
1430 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1431 if (usbvision->ctrlUrb == NULL)
1432 goto err_unreg;
1433 init_waitqueue_head(&usbvision->ctrlUrb_wq);
1434
1435 usbvision_init_powerOffTimer(usbvision);
1436
1437 return usbvision;
1438
1439 err_unreg:
1440 v4l2_device_unregister(&usbvision->v4l2_dev);
1441 err_free:
1442 kfree(usbvision);
1443 return NULL;
1444 }
1445
1446 /*
1447 * usbvision_release()
1448 *
1449 * This code does final release of struct usb_usbvision. This happens
1450 * after the device is disconnected -and- all clients closed their files.
1451 *
1452 */
1453 static void usbvision_release(struct usb_usbvision *usbvision)
1454 {
1455 PDEBUG(DBG_PROBE, "");
1456
1457 usbvision_reset_powerOffTimer(usbvision);
1458
1459 usbvision->initialized = 0;
1460
1461 usbvision_remove_sysfs(usbvision->vdev);
1462 usbvision_unregister_video(usbvision);
1463
1464 if (usbvision->ctrlUrb) {
1465 usb_free_urb(usbvision->ctrlUrb);
1466 }
1467
1468 v4l2_device_unregister(&usbvision->v4l2_dev);
1469 kfree(usbvision);
1470
1471 PDEBUG(DBG_PROBE, "success");
1472 }
1473
1474
1475 /*********************** usb interface **********************************/
1476
1477 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1478 {
1479 int model;
1480
1481 if (usbvision == NULL)
1482 return;
1483
1484 model = usbvision->DevModel;
1485 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1486
1487 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1488 usbvision->Vin_Reg2_Preset =
1489 usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1490 } else {
1491 usbvision->Vin_Reg2_Preset = 0;
1492 }
1493
1494 usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1495
1496 usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1497 usbvision->ctl_input = 0;
1498
1499 /* This should be here to make i2c clients to be able to register */
1500 /* first switch off audio */
1501 usbvision_audio_off(usbvision);
1502 if (!PowerOnAtOpen) {
1503 /* and then power up the noisy tuner */
1504 usbvision_power_on(usbvision);
1505 usbvision_i2c_register(usbvision);
1506 }
1507 }
1508
1509 /*
1510 * usbvision_probe()
1511 *
1512 * This procedure queries device descriptor and accepts the interface
1513 * if it looks like USBVISION video device
1514 *
1515 */
1516 static int __devinit usbvision_probe(struct usb_interface *intf,
1517 const struct usb_device_id *devid)
1518 {
1519 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1520 struct usb_interface *uif;
1521 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1522 const struct usb_host_interface *interface;
1523 struct usb_usbvision *usbvision = NULL;
1524 const struct usb_endpoint_descriptor *endpoint;
1525 int model,i;
1526
1527 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1528 dev->descriptor.idVendor,
1529 dev->descriptor.idProduct, ifnum);
1530
1531 model = devid->driver_info;
1532 if ( (model<0) || (model>=usbvision_device_data_size) ) {
1533 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1534 return -ENODEV;
1535 }
1536 printk(KERN_INFO "%s: %s found\n", __func__,
1537 usbvision_device_data[model].ModelString);
1538
1539 if (usbvision_device_data[model].Interface >= 0) {
1540 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1541 } else {
1542 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1543 }
1544 endpoint = &interface->endpoint[1].desc;
1545 if (!usb_endpoint_xfer_isoc(endpoint)) {
1546 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1547 __func__, ifnum);
1548 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1549 __func__, endpoint->bmAttributes);
1550 return -ENODEV;
1551 }
1552 if (usb_endpoint_dir_out(endpoint)) {
1553 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1554 __func__, ifnum);
1555 return -ENODEV;
1556 }
1557
1558 usbvision = usbvision_alloc(dev, intf);
1559 if (usbvision == NULL) {
1560 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1561 return -ENOMEM;
1562 }
1563
1564 if (dev->descriptor.bNumConfigurations > 1) {
1565 usbvision->bridgeType = BRIDGE_NT1004;
1566 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1567 usbvision->bridgeType = BRIDGE_NT1005;
1568 } else {
1569 usbvision->bridgeType = BRIDGE_NT1003;
1570 }
1571 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1572
1573 /* compute alternate max packet sizes */
1574 uif = dev->actconfig->interface[0];
1575
1576 usbvision->num_alt=uif->num_altsetting;
1577 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1578 usbvision->alt_max_pkt_size = kmalloc(32*
1579 usbvision->num_alt,GFP_KERNEL);
1580 if (usbvision->alt_max_pkt_size == NULL) {
1581 dev_err(&intf->dev, "usbvision: out of memory!\n");
1582 return -ENOMEM;
1583 }
1584
1585 for (i = 0; i < usbvision->num_alt ; i++) {
1586 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1587 wMaxPacketSize);
1588 usbvision->alt_max_pkt_size[i] =
1589 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1590 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1591 usbvision->alt_max_pkt_size[i]);
1592 }
1593
1594
1595 usbvision->nr = usbvision_nr++;
1596
1597 usbvision->have_tuner = usbvision_device_data[model].Tuner;
1598 if (usbvision->have_tuner) {
1599 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1600 }
1601
1602 usbvision->DevModel = model;
1603 usbvision->remove_pending = 0;
1604 usbvision->iface = ifnum;
1605 usbvision->ifaceAlt = 0;
1606 usbvision->video_endp = endpoint->bEndpointAddress;
1607 usbvision->isocPacketSize = 0;
1608 usbvision->usb_bandwidth = 0;
1609 usbvision->user = 0;
1610 usbvision->streaming = Stream_Off;
1611 usbvision_configure_video(usbvision);
1612 usbvision_register_video(usbvision);
1613
1614 usbvision_create_sysfs(usbvision->vdev);
1615
1616 PDEBUG(DBG_PROBE, "success");
1617 return 0;
1618 }
1619
1620
1621 /*
1622 * usbvision_disconnect()
1623 *
1624 * This procedure stops all driver activity, deallocates interface-private
1625 * structure (pointed by 'ptr') and after that driver should be removable
1626 * with no ill consequences.
1627 *
1628 */
1629 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1630 {
1631 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1632
1633 PDEBUG(DBG_PROBE, "");
1634
1635 if (usbvision == NULL) {
1636 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1637 return;
1638 }
1639
1640 mutex_lock(&usbvision->v4l2_lock);
1641
1642 // At this time we ask to cancel outstanding URBs
1643 usbvision_stop_isoc(usbvision);
1644
1645 v4l2_device_disconnect(&usbvision->v4l2_dev);
1646
1647 if (usbvision->power) {
1648 usbvision_i2c_unregister(usbvision);
1649 usbvision_power_off(usbvision);
1650 }
1651 usbvision->remove_pending = 1; // Now all ISO data will be ignored
1652
1653 usb_put_dev(usbvision->dev);
1654 usbvision->dev = NULL; // USB device is no more
1655
1656 mutex_unlock(&usbvision->v4l2_lock);
1657
1658 if (usbvision->user) {
1659 printk(KERN_INFO "%s: In use, disconnect pending\n",
1660 __func__);
1661 wake_up_interruptible(&usbvision->wait_frame);
1662 wake_up_interruptible(&usbvision->wait_stream);
1663 } else {
1664 usbvision_release(usbvision);
1665 }
1666
1667 PDEBUG(DBG_PROBE, "success");
1668 }
1669
1670 static struct usb_driver usbvision_driver = {
1671 .name = "usbvision",
1672 .id_table = usbvision_table,
1673 .probe = usbvision_probe,
1674 .disconnect = __devexit_p(usbvision_disconnect),
1675 };
1676
1677 /*
1678 * usbvision_init()
1679 *
1680 * This code is run to initialize the driver.
1681 *
1682 */
1683 static int __init usbvision_init(void)
1684 {
1685 int errCode;
1686
1687 PDEBUG(DBG_PROBE, "");
1688
1689 PDEBUG(DBG_IO, "IO debugging is enabled [video]");
1690 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]");
1691 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]");
1692
1693 /* disable planar mode support unless compression enabled */
1694 if (isocMode != ISOC_MODE_COMPRESS ) {
1695 // FIXME : not the right way to set supported flag
1696 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1697 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1698 }
1699
1700 errCode = usb_register(&usbvision_driver);
1701
1702 if (errCode == 0) {
1703 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1704 PDEBUG(DBG_PROBE, "success");
1705 }
1706 return errCode;
1707 }
1708
1709 static void __exit usbvision_exit(void)
1710 {
1711 PDEBUG(DBG_PROBE, "");
1712
1713 usb_deregister(&usbvision_driver);
1714 PDEBUG(DBG_PROBE, "success");
1715 }
1716
1717 module_init(usbvision_init);
1718 module_exit(usbvision_exit);
1719
1720 /*
1721 * Overrides for Emacs so that we follow Linus's tabbing style.
1722 * ---------------------------------------------------------------------------
1723 * Local variables:
1724 * c-basic-offset: 8
1725 * End:
1726 */
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