?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
net: add skb_dst_force() in sock_queue_err_skb()
[linux/fpc-iii.git] / drivers / media / video / cpia2 / cpia2_v4l.c
blob5111bbcefad5f4ff1e76d5e316d38306fdf50a5c
1 /****************************************************************************
2 *
3 * Filename: cpia2_v4l.c
4 *
5 * Copyright 2001, STMicrolectronics, Inc.
6 * Contact: steve.miller@st.com
7 * Copyright 2001,2005, Scott J. Bertin <scottbertin@yahoo.com>
8 *
9 * Description:
10 * This is a USB driver for CPia2 based video cameras.
11 * The infrastructure of this driver is based on the cpia usb driver by
12 * Jochen Scharrlach and Johannes Erdfeldt.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 *
28 * Stripped of 2.4 stuff ready for main kernel submit by
29 * Alan Cox <alan@lxorguk.ukuu.org.uk>
30 ****************************************************************************/
31
32 #include <linux/version.h>
33
34
35 #include <linux/module.h>
36 #include <linux/time.h>
37 #include <linux/sched.h>
38 #include <linux/slab.h>
39 #include <linux/init.h>
40 #include <linux/videodev2.h>
41 #include <linux/stringify.h>
42 #include <media/v4l2-ioctl.h>
43
44 #include "cpia2.h"
45 #include "cpia2dev.h"
46
47 static int video_nr = -1;
48 module_param(video_nr, int, 0);
49 MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
50
51 static int buffer_size = 68*1024;
52 module_param(buffer_size, int, 0);
53 MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
54
55 static int num_buffers = 3;
56 module_param(num_buffers, int, 0);
57 MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
58 __stringify(VIDEO_MAX_FRAME) ", default 3)");
59
60 static int alternate = DEFAULT_ALT;
61 module_param(alternate, int, 0);
62 MODULE_PARM_DESC(alternate, "USB Alternate (" __stringify(USBIF_ISO_1) "-"
63 __stringify(USBIF_ISO_6) ", default "
64 __stringify(DEFAULT_ALT) ")");
65
66 static int flicker_freq = 60;
67 module_param(flicker_freq, int, 0);
68 MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" __stringify(50) "or"
69 __stringify(60) ", default "
70 __stringify(60) ")");
71
72 static int flicker_mode = NEVER_FLICKER;
73 module_param(flicker_mode, int, 0);
74 MODULE_PARM_DESC(flicker_mode,
75 "Flicker supression (" __stringify(NEVER_FLICKER) "or"
76 __stringify(ANTI_FLICKER_ON) ", default "
77 __stringify(NEVER_FLICKER) ")");
78
79 MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
80 MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
81 MODULE_SUPPORTED_DEVICE("video");
82 MODULE_LICENSE("GPL");
83
84 #define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
85
86 struct control_menu_info {
87 int value;
88 char name[32];
89 };
90
91 static struct control_menu_info framerate_controls[] =
92 {
93 { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
94 { CPIA2_VP_FRAMERATE_7_5, "7.5 fps" },
95 { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
96 { CPIA2_VP_FRAMERATE_15, "15 fps" },
97 { CPIA2_VP_FRAMERATE_25, "25 fps" },
98 { CPIA2_VP_FRAMERATE_30, "30 fps" },
99 };
100 #define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
101
102 static struct control_menu_info flicker_controls[] =
103 {
104 { NEVER_FLICKER, "Off" },
105 { FLICKER_50, "50 Hz" },
106 { FLICKER_60, "60 Hz" },
107 };
108 #define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
109
110 static struct control_menu_info lights_controls[] =
111 {
112 { 0, "Off" },
113 { 64, "Top" },
114 { 128, "Bottom" },
115 { 192, "Both" },
116 };
117 #define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
118 #define GPIO_LIGHTS_MASK 192
119
120 static struct v4l2_queryctrl controls[] = {
121 {
122 .id = V4L2_CID_BRIGHTNESS,
123 .type = V4L2_CTRL_TYPE_INTEGER,
124 .name = "Brightness",
125 .minimum = 0,
126 .maximum = 255,
127 .step = 1,
128 .default_value = DEFAULT_BRIGHTNESS,
129 },
130 {
131 .id = V4L2_CID_CONTRAST,
132 .type = V4L2_CTRL_TYPE_INTEGER,
133 .name = "Contrast",
134 .minimum = 0,
135 .maximum = 255,
136 .step = 1,
137 .default_value = DEFAULT_CONTRAST,
138 },
139 {
140 .id = V4L2_CID_SATURATION,
141 .type = V4L2_CTRL_TYPE_INTEGER,
142 .name = "Saturation",
143 .minimum = 0,
144 .maximum = 255,
145 .step = 1,
146 .default_value = DEFAULT_SATURATION,
147 },
148 {
149 .id = V4L2_CID_HFLIP,
150 .type = V4L2_CTRL_TYPE_BOOLEAN,
151 .name = "Mirror Horizontally",
152 .minimum = 0,
153 .maximum = 1,
154 .step = 1,
155 .default_value = 0,
156 },
157 {
158 .id = V4L2_CID_VFLIP,
159 .type = V4L2_CTRL_TYPE_BOOLEAN,
160 .name = "Flip Vertically",
161 .minimum = 0,
162 .maximum = 1,
163 .step = 1,
164 .default_value = 0,
165 },
166 {
167 .id = CPIA2_CID_TARGET_KB,
168 .type = V4L2_CTRL_TYPE_INTEGER,
169 .name = "Target KB",
170 .minimum = 0,
171 .maximum = 255,
172 .step = 1,
173 .default_value = DEFAULT_TARGET_KB,
174 },
175 {
176 .id = CPIA2_CID_GPIO,
177 .type = V4L2_CTRL_TYPE_INTEGER,
178 .name = "GPIO",
179 .minimum = 0,
180 .maximum = 255,
181 .step = 1,
182 .default_value = 0,
183 },
184 {
185 .id = CPIA2_CID_FLICKER_MODE,
186 .type = V4L2_CTRL_TYPE_MENU,
187 .name = "Flicker Reduction",
188 .minimum = 0,
189 .maximum = NUM_FLICKER_CONTROLS-1,
190 .step = 1,
191 .default_value = 0,
192 },
193 {
194 .id = CPIA2_CID_FRAMERATE,
195 .type = V4L2_CTRL_TYPE_MENU,
196 .name = "Framerate",
197 .minimum = 0,
198 .maximum = NUM_FRAMERATE_CONTROLS-1,
199 .step = 1,
200 .default_value = NUM_FRAMERATE_CONTROLS-1,
201 },
202 {
203 .id = CPIA2_CID_USB_ALT,
204 .type = V4L2_CTRL_TYPE_INTEGER,
205 .name = "USB Alternate",
206 .minimum = USBIF_ISO_1,
207 .maximum = USBIF_ISO_6,
208 .step = 1,
209 .default_value = DEFAULT_ALT,
210 },
211 {
212 .id = CPIA2_CID_LIGHTS,
213 .type = V4L2_CTRL_TYPE_MENU,
214 .name = "Lights",
215 .minimum = 0,
216 .maximum = NUM_LIGHTS_CONTROLS-1,
217 .step = 1,
218 .default_value = 0,
219 },
220 {
221 .id = CPIA2_CID_RESET_CAMERA,
222 .type = V4L2_CTRL_TYPE_BUTTON,
223 .name = "Reset Camera",
224 .minimum = 0,
225 .maximum = 0,
226 .step = 0,
227 .default_value = 0,
228 },
229 };
230 #define NUM_CONTROLS (ARRAY_SIZE(controls))
231
232
233 /******************************************************************************
234 *
235 * cpia2_open
236 *
237 *****************************************************************************/
238 static int cpia2_open(struct file *file)
239 {
240 struct camera_data *cam = video_drvdata(file);
241 struct cpia2_fh *fh;
242
243 if (!cam) {
244 ERR("Internal error, camera_data not found!\n");
245 return -ENODEV;
246 }
247
248 if (!cam->present)
249 return -ENODEV;
250
251 if (cam->open_count == 0) {
252 if (cpia2_allocate_buffers(cam))
253 return -ENOMEM;
254
255 /* reset the camera */
256 if (cpia2_reset_camera(cam) < 0)
257 return -EIO;
258
259 cam->APP_len = 0;
260 cam->COM_len = 0;
261 }
262
263 fh = kmalloc(sizeof(*fh), GFP_KERNEL);
264 if (!fh)
265 return -ENOMEM;
266 file->private_data = fh;
267 fh->prio = V4L2_PRIORITY_UNSET;
268 v4l2_prio_open(&cam->prio, &fh->prio);
269 fh->mmapped = 0;
270
271 ++cam->open_count;
272
273 cpia2_dbg_dump_registers(cam);
274 return 0;
275 }
276
277 /******************************************************************************
278 *
279 * cpia2_close
280 *
281 *****************************************************************************/
282 static int cpia2_close(struct file *file)
283 {
284 struct video_device *dev = video_devdata(file);
285 struct camera_data *cam = video_get_drvdata(dev);
286 struct cpia2_fh *fh = file->private_data;
287
288 if (cam->present &&
289 (cam->open_count == 1 || fh->prio == V4L2_PRIORITY_RECORD)) {
290 cpia2_usb_stream_stop(cam);
291
292 if (cam->open_count == 1) {
293 /* save camera state for later open */
294 cpia2_save_camera_state(cam);
295
296 cpia2_set_low_power(cam);
297 cpia2_free_buffers(cam);
298 }
299 }
300
301 if (fh->mmapped)
302 cam->mmapped = 0;
303 v4l2_prio_close(&cam->prio, fh->prio);
304 file->private_data = NULL;
305 kfree(fh);
306
307 if (--cam->open_count == 0) {
308 cpia2_free_buffers(cam);
309 if (!cam->present) {
310 video_unregister_device(dev);
311 kfree(cam);
312 return 0;
313 }
314 }
315
316 return 0;
317 }
318
319 /******************************************************************************
320 *
321 * cpia2_v4l_read
322 *
323 *****************************************************************************/
324 static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
325 loff_t *off)
326 {
327 struct camera_data *cam = video_drvdata(file);
328 int noblock = file->f_flags&O_NONBLOCK;
329
330 struct cpia2_fh *fh = file->private_data;
331
332 if(!cam)
333 return -EINVAL;
334
335 /* Priority check */
336 if(fh->prio != V4L2_PRIORITY_RECORD) {
337 return -EBUSY;
338 }
339
340 return cpia2_read(cam, buf, count, noblock);
341 }
342
343
344 /******************************************************************************
345 *
346 * cpia2_v4l_poll
347 *
348 *****************************************************************************/
349 static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
350 {
351 struct camera_data *cam = video_drvdata(filp);
352 struct cpia2_fh *fh = filp->private_data;
353
354 if(!cam)
355 return POLLERR;
356
357 /* Priority check */
358 if(fh->prio != V4L2_PRIORITY_RECORD) {
359 return POLLERR;
360 }
361
362 return cpia2_poll(cam, filp, wait);
363 }
364
365
366 static int sync(struct camera_data *cam, int frame_nr)
367 {
368 struct framebuf *frame = &cam->buffers[frame_nr];
369
370 while (1) {
371 if (frame->status == FRAME_READY)
372 return 0;
373
374 if (!cam->streaming) {
375 frame->status = FRAME_READY;
376 frame->length = 0;
377 return 0;
378 }
379
380 mutex_unlock(&cam->v4l2_lock);
381 wait_event_interruptible(cam->wq_stream,
382 !cam->streaming ||
383 frame->status == FRAME_READY);
384 mutex_lock(&cam->v4l2_lock);
385 if (signal_pending(current))
386 return -ERESTARTSYS;
387 if(!cam->present)
388 return -ENOTTY;
389 }
390 }
391
392 /******************************************************************************
393 *
394 * ioctl_set_gpio
395 *
396 *****************************************************************************/
397
398 static long cpia2_default(struct file *file, void *fh, bool valid_prio,
399 int cmd, void *arg)
400 {
401 struct camera_data *cam = video_drvdata(file);
402 __u32 gpio_val;
403
404 if (cmd != CPIA2_CID_GPIO)
405 return -EINVAL;
406
407 gpio_val = *(__u32*) arg;
408
409 if (gpio_val &~ 0xFFU)
410 return -EINVAL;
411
412 return cpia2_set_gpio(cam, (unsigned char)gpio_val);
413 }
414
415 /******************************************************************************
416 *
417 * ioctl_querycap
418 *
419 * V4L2 device capabilities
420 *
421 *****************************************************************************/
422
423 static int cpia2_querycap(struct file *file, void *fh, struct v4l2_capability *vc)
424 {
425 struct camera_data *cam = video_drvdata(file);
426
427 strcpy(vc->driver, "cpia2");
428
429 if (cam->params.pnp_id.product == 0x151)
430 strcpy(vc->card, "QX5 Microscope");
431 else
432 strcpy(vc->card, "CPiA2 Camera");
433 switch (cam->params.pnp_id.device_type) {
434 case DEVICE_STV_672:
435 strcat(vc->card, " (672/");
436 break;
437 case DEVICE_STV_676:
438 strcat(vc->card, " (676/");
439 break;
440 default:
441 strcat(vc->card, " (???/");
442 break;
443 }
444 switch (cam->params.version.sensor_flags) {
445 case CPIA2_VP_SENSOR_FLAGS_404:
446 strcat(vc->card, "404)");
447 break;
448 case CPIA2_VP_SENSOR_FLAGS_407:
449 strcat(vc->card, "407)");
450 break;
451 case CPIA2_VP_SENSOR_FLAGS_409:
452 strcat(vc->card, "409)");
453 break;
454 case CPIA2_VP_SENSOR_FLAGS_410:
455 strcat(vc->card, "410)");
456 break;
457 case CPIA2_VP_SENSOR_FLAGS_500:
458 strcat(vc->card, "500)");
459 break;
460 default:
461 strcat(vc->card, "???)");
462 break;
463 }
464
465 if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
466 memset(vc->bus_info,0, sizeof(vc->bus_info));
467
468 vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
469 CPIA2_PATCH_VER);
470
471 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
472 V4L2_CAP_READWRITE |
473 V4L2_CAP_STREAMING;
474
475 return 0;
476 }
477
478 /******************************************************************************
479 *
480 * ioctl_input
481 *
482 * V4L2 input get/set/enumerate
483 *
484 *****************************************************************************/
485
486 static int cpia2_enum_input(struct file *file, void *fh, struct v4l2_input *i)
487 {
488 if (i->index)
489 return -EINVAL;
490 strcpy(i->name, "Camera");
491 i->type = V4L2_INPUT_TYPE_CAMERA;
492 return 0;
493 }
494
495 static int cpia2_g_input(struct file *file, void *fh, unsigned int *i)
496 {
497 *i = 0;
498 return 0;
499 }
500
501 static int cpia2_s_input(struct file *file, void *fh, unsigned int i)
502 {
503 return i ? -EINVAL : 0;
504 }
505
506 /******************************************************************************
507 *
508 * ioctl_enum_fmt
509 *
510 * V4L2 format enumerate
511 *
512 *****************************************************************************/
513
514 static int cpia2_enum_fmt_vid_cap(struct file *file, void *fh,
515 struct v4l2_fmtdesc *f)
516 {
517 int index = f->index;
518
519 if (index < 0 || index > 1)
520 return -EINVAL;
521
522 memset(f, 0, sizeof(*f));
523 f->index = index;
524 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
525 f->flags = V4L2_FMT_FLAG_COMPRESSED;
526 switch(index) {
527 case 0:
528 strcpy(f->description, "MJPEG");
529 f->pixelformat = V4L2_PIX_FMT_MJPEG;
530 break;
531 case 1:
532 strcpy(f->description, "JPEG");
533 f->pixelformat = V4L2_PIX_FMT_JPEG;
534 break;
535 default:
536 return -EINVAL;
537 }
538
539 return 0;
540 }
541
542 /******************************************************************************
543 *
544 * ioctl_try_fmt
545 *
546 * V4L2 format try
547 *
548 *****************************************************************************/
549
550 static int cpia2_try_fmt_vid_cap(struct file *file, void *fh,
551 struct v4l2_format *f)
552 {
553 struct camera_data *cam = video_drvdata(file);
554
555 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
556 f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
557 return -EINVAL;
558
559 f->fmt.pix.field = V4L2_FIELD_NONE;
560 f->fmt.pix.bytesperline = 0;
561 f->fmt.pix.sizeimage = cam->frame_size;
562 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
563 f->fmt.pix.priv = 0;
564
565 switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
566 case VIDEOSIZE_VGA:
567 f->fmt.pix.width = 640;
568 f->fmt.pix.height = 480;
569 break;
570 case VIDEOSIZE_CIF:
571 f->fmt.pix.width = 352;
572 f->fmt.pix.height = 288;
573 break;
574 case VIDEOSIZE_QVGA:
575 f->fmt.pix.width = 320;
576 f->fmt.pix.height = 240;
577 break;
578 case VIDEOSIZE_288_216:
579 f->fmt.pix.width = 288;
580 f->fmt.pix.height = 216;
581 break;
582 case VIDEOSIZE_256_192:
583 f->fmt.pix.width = 256;
584 f->fmt.pix.height = 192;
585 break;
586 case VIDEOSIZE_224_168:
587 f->fmt.pix.width = 224;
588 f->fmt.pix.height = 168;
589 break;
590 case VIDEOSIZE_192_144:
591 f->fmt.pix.width = 192;
592 f->fmt.pix.height = 144;
593 break;
594 case VIDEOSIZE_QCIF:
595 default:
596 f->fmt.pix.width = 176;
597 f->fmt.pix.height = 144;
598 break;
599 }
600
601 return 0;
602 }
603
604 /******************************************************************************
605 *
606 * ioctl_set_fmt
607 *
608 * V4L2 format set
609 *
610 *****************************************************************************/
611
612 static int cpia2_s_fmt_vid_cap(struct file *file, void *_fh,
613 struct v4l2_format *f)
614 {
615 struct camera_data *cam = video_drvdata(file);
616 struct cpia2_fh *fh = _fh;
617 int err, frame;
618
619 err = v4l2_prio_check(&cam->prio, fh->prio);
620 if (err)
621 return err;
622 err = cpia2_try_fmt_vid_cap(file, _fh, f);
623 if(err != 0)
624 return err;
625
626 /* Ensure that only this process can change the format. */
627 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
628 if(err != 0) {
629 return err;
630 }
631
632 cam->pixelformat = f->fmt.pix.pixelformat;
633
634 /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
635 * the missing Huffman table properly. */
636 cam->params.compression.inhibit_htables = 0;
637 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
638
639 /* we set the video window to something smaller or equal to what
640 * is requested by the user???
641 */
642 DBG("Requested width = %d, height = %d\n",
643 f->fmt.pix.width, f->fmt.pix.height);
644 if (f->fmt.pix.width != cam->width ||
645 f->fmt.pix.height != cam->height) {
646 cam->width = f->fmt.pix.width;
647 cam->height = f->fmt.pix.height;
648 cam->params.roi.width = f->fmt.pix.width;
649 cam->params.roi.height = f->fmt.pix.height;
650 cpia2_set_format(cam);
651 }
652
653 for (frame = 0; frame < cam->num_frames; ++frame) {
654 if (cam->buffers[frame].status == FRAME_READING)
655 if ((err = sync(cam, frame)) < 0)
656 return err;
657
658 cam->buffers[frame].status = FRAME_EMPTY;
659 }
660
661 return 0;
662 }
663
664 /******************************************************************************
665 *
666 * ioctl_get_fmt
667 *
668 * V4L2 format get
669 *
670 *****************************************************************************/
671
672 static int cpia2_g_fmt_vid_cap(struct file *file, void *fh,
673 struct v4l2_format *f)
674 {
675 struct camera_data *cam = video_drvdata(file);
676
677 f->fmt.pix.width = cam->width;
678 f->fmt.pix.height = cam->height;
679 f->fmt.pix.pixelformat = cam->pixelformat;
680 f->fmt.pix.field = V4L2_FIELD_NONE;
681 f->fmt.pix.bytesperline = 0;
682 f->fmt.pix.sizeimage = cam->frame_size;
683 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
684 f->fmt.pix.priv = 0;
685
686 return 0;
687 }
688
689 /******************************************************************************
690 *
691 * ioctl_cropcap
692 *
693 * V4L2 query cropping capabilities
694 * NOTE: cropping is currently disabled
695 *
696 *****************************************************************************/
697
698 static int cpia2_cropcap(struct file *file, void *fh, struct v4l2_cropcap *c)
699 {
700 struct camera_data *cam = video_drvdata(file);
701
702 if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
703 return -EINVAL;
704
705 c->bounds.left = 0;
706 c->bounds.top = 0;
707 c->bounds.width = cam->width;
708 c->bounds.height = cam->height;
709 c->defrect.left = 0;
710 c->defrect.top = 0;
711 c->defrect.width = cam->width;
712 c->defrect.height = cam->height;
713 c->pixelaspect.numerator = 1;
714 c->pixelaspect.denominator = 1;
715
716 return 0;
717 }
718
719 /******************************************************************************
720 *
721 * ioctl_queryctrl
722 *
723 * V4L2 query possible control variables
724 *
725 *****************************************************************************/
726
727 static int cpia2_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c)
728 {
729 struct camera_data *cam = video_drvdata(file);
730 int i;
731
732 for(i=0; i<NUM_CONTROLS; ++i) {
733 if(c->id == controls[i].id) {
734 memcpy(c, controls+i, sizeof(*c));
735 break;
736 }
737 }
738
739 if(i == NUM_CONTROLS)
740 return -EINVAL;
741
742 /* Some devices have additional limitations */
743 switch(c->id) {
744 case V4L2_CID_BRIGHTNESS:
745 /***
746 * Don't let the register be set to zero - bug in VP4
747 * flash of full brightness
748 ***/
749 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
750 c->minimum = 1;
751 break;
752 case V4L2_CID_VFLIP:
753 // VP5 Only
754 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
755 c->flags |= V4L2_CTRL_FLAG_DISABLED;
756 break;
757 case CPIA2_CID_FRAMERATE:
758 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
759 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
760 // Maximum 15fps
761 for(i=0; i<c->maximum; ++i) {
762 if(framerate_controls[i].value ==
763 CPIA2_VP_FRAMERATE_15) {
764 c->maximum = i;
765 c->default_value = i;
766 }
767 }
768 }
769 break;
770 case CPIA2_CID_FLICKER_MODE:
771 // Flicker control only valid for 672.
772 if(cam->params.pnp_id.device_type != DEVICE_STV_672)
773 c->flags |= V4L2_CTRL_FLAG_DISABLED;
774 break;
775 case CPIA2_CID_LIGHTS:
776 // Light control only valid for the QX5 Microscope.
777 if(cam->params.pnp_id.product != 0x151)
778 c->flags |= V4L2_CTRL_FLAG_DISABLED;
779 break;
780 default:
781 break;
782 }
783
784 return 0;
785 }
786
787 /******************************************************************************
788 *
789 * ioctl_querymenu
790 *
791 * V4L2 query possible control variables
792 *
793 *****************************************************************************/
794
795 static int cpia2_querymenu(struct file *file, void *fh, struct v4l2_querymenu *m)
796 {
797 struct camera_data *cam = video_drvdata(file);
798
799 switch(m->id) {
800 case CPIA2_CID_FLICKER_MODE:
801 if (m->index >= NUM_FLICKER_CONTROLS)
802 return -EINVAL;
803
804 strcpy(m->name, flicker_controls[m->index].name);
805 break;
806 case CPIA2_CID_FRAMERATE:
807 {
808 int maximum = NUM_FRAMERATE_CONTROLS - 1;
809 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
810 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
811 // Maximum 15fps
812 int i;
813 for(i=0; i<maximum; ++i) {
814 if(framerate_controls[i].value ==
815 CPIA2_VP_FRAMERATE_15)
816 maximum = i;
817 }
818 }
819 if (m->index > maximum)
820 return -EINVAL;
821
822 strcpy(m->name, framerate_controls[m->index].name);
823 break;
824 }
825 case CPIA2_CID_LIGHTS:
826 if (m->index >= NUM_LIGHTS_CONTROLS)
827 return -EINVAL;
828
829 strcpy(m->name, lights_controls[m->index].name);
830 break;
831 default:
832 return -EINVAL;
833 }
834
835 return 0;
836 }
837
838 /******************************************************************************
839 *
840 * ioctl_g_ctrl
841 *
842 * V4L2 get the value of a control variable
843 *
844 *****************************************************************************/
845
846 static int cpia2_g_ctrl(struct file *file, void *fh, struct v4l2_control *c)
847 {
848 struct camera_data *cam = video_drvdata(file);
849
850 switch(c->id) {
851 case V4L2_CID_BRIGHTNESS:
852 cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
853 TRANSFER_READ, 0);
854 c->value = cam->params.color_params.brightness;
855 break;
856 case V4L2_CID_CONTRAST:
857 cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
858 TRANSFER_READ, 0);
859 c->value = cam->params.color_params.contrast;
860 break;
861 case V4L2_CID_SATURATION:
862 cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
863 TRANSFER_READ, 0);
864 c->value = cam->params.color_params.saturation;
865 break;
866 case V4L2_CID_HFLIP:
867 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
868 TRANSFER_READ, 0);
869 c->value = (cam->params.vp_params.user_effects &
870 CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
871 break;
872 case V4L2_CID_VFLIP:
873 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
874 TRANSFER_READ, 0);
875 c->value = (cam->params.vp_params.user_effects &
876 CPIA2_VP_USER_EFFECTS_FLIP) != 0;
877 break;
878 case CPIA2_CID_TARGET_KB:
879 c->value = cam->params.vc_params.target_kb;
880 break;
881 case CPIA2_CID_GPIO:
882 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
883 TRANSFER_READ, 0);
884 c->value = cam->params.vp_params.gpio_data;
885 break;
886 case CPIA2_CID_FLICKER_MODE:
887 {
888 int i, mode;
889 cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
890 TRANSFER_READ, 0);
891 if(cam->params.flicker_control.cam_register &
892 CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
893 mode = NEVER_FLICKER;
894 } else {
895 if(cam->params.flicker_control.cam_register &
896 CPIA2_VP_FLICKER_MODES_50HZ) {
897 mode = FLICKER_50;
898 } else {
899 mode = FLICKER_60;
900 }
901 }
902 for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
903 if(flicker_controls[i].value == mode) {
904 c->value = i;
905 break;
906 }
907 }
908 if(i == NUM_FLICKER_CONTROLS)
909 return -EINVAL;
910 break;
911 }
912 case CPIA2_CID_FRAMERATE:
913 {
914 int maximum = NUM_FRAMERATE_CONTROLS - 1;
915 int i;
916 for(i=0; i<= maximum; i++) {
917 if(cam->params.vp_params.frame_rate ==
918 framerate_controls[i].value)
919 break;
920 }
921 if(i > maximum)
922 return -EINVAL;
923 c->value = i;
924 break;
925 }
926 case CPIA2_CID_USB_ALT:
927 c->value = cam->params.camera_state.stream_mode;
928 break;
929 case CPIA2_CID_LIGHTS:
930 {
931 int i;
932 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
933 TRANSFER_READ, 0);
934 for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
935 if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
936 lights_controls[i].value) {
937 break;
938 }
939 }
940 if(i == NUM_LIGHTS_CONTROLS)
941 return -EINVAL;
942 c->value = i;
943 break;
944 }
945 case CPIA2_CID_RESET_CAMERA:
946 return -EINVAL;
947 default:
948 return -EINVAL;
949 }
950
951 DBG("Get control id:%d, value:%d\n", c->id, c->value);
952
953 return 0;
954 }
955
956 /******************************************************************************
957 *
958 * ioctl_s_ctrl
959 *
960 * V4L2 set the value of a control variable
961 *
962 *****************************************************************************/
963
964 static int cpia2_s_ctrl(struct file *file, void *fh, struct v4l2_control *c)
965 {
966 struct camera_data *cam = video_drvdata(file);
967 int i;
968 int retval = 0;
969
970 DBG("Set control id:%d, value:%d\n", c->id, c->value);
971
972 /* Check that the value is in range */
973 for(i=0; i<NUM_CONTROLS; i++) {
974 if(c->id == controls[i].id) {
975 if(c->value < controls[i].minimum ||
976 c->value > controls[i].maximum) {
977 return -EINVAL;
978 }
979 break;
980 }
981 }
982 if(i == NUM_CONTROLS)
983 return -EINVAL;
984
985 switch(c->id) {
986 case V4L2_CID_BRIGHTNESS:
987 cpia2_set_brightness(cam, c->value);
988 break;
989 case V4L2_CID_CONTRAST:
990 cpia2_set_contrast(cam, c->value);
991 break;
992 case V4L2_CID_SATURATION:
993 cpia2_set_saturation(cam, c->value);
994 break;
995 case V4L2_CID_HFLIP:
996 cpia2_set_property_mirror(cam, c->value);
997 break;
998 case V4L2_CID_VFLIP:
999 cpia2_set_property_flip(cam, c->value);
1000 break;
1001 case CPIA2_CID_TARGET_KB:
1002 retval = cpia2_set_target_kb(cam, c->value);
1003 break;
1004 case CPIA2_CID_GPIO:
1005 retval = cpia2_set_gpio(cam, c->value);
1006 break;
1007 case CPIA2_CID_FLICKER_MODE:
1008 retval = cpia2_set_flicker_mode(cam,
1009 flicker_controls[c->value].value);
1010 break;
1011 case CPIA2_CID_FRAMERATE:
1012 retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
1013 break;
1014 case CPIA2_CID_USB_ALT:
1015 retval = cpia2_usb_change_streaming_alternate(cam, c->value);
1016 break;
1017 case CPIA2_CID_LIGHTS:
1018 retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
1019 break;
1020 case CPIA2_CID_RESET_CAMERA:
1021 cpia2_usb_stream_pause(cam);
1022 cpia2_reset_camera(cam);
1023 cpia2_usb_stream_resume(cam);
1024 break;
1025 default:
1026 retval = -EINVAL;
1027 }
1028
1029 return retval;
1030 }
1031
1032 /******************************************************************************
1033 *
1034 * ioctl_g_jpegcomp
1035 *
1036 * V4L2 get the JPEG compression parameters
1037 *
1038 *****************************************************************************/
1039
1040 static int cpia2_g_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompression *parms)
1041 {
1042 struct camera_data *cam = video_drvdata(file);
1043
1044 memset(parms, 0, sizeof(*parms));
1045
1046 parms->quality = 80; // TODO: Can this be made meaningful?
1047
1048 parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
1049 if(!cam->params.compression.inhibit_htables) {
1050 parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
1051 }
1052
1053 parms->APPn = cam->APPn;
1054 parms->APP_len = cam->APP_len;
1055 if(cam->APP_len > 0) {
1056 memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
1057 parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
1058 }
1059
1060 parms->COM_len = cam->COM_len;
1061 if(cam->COM_len > 0) {
1062 memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
1063 parms->jpeg_markers |= JPEG_MARKER_COM;
1064 }
1065
1066 DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
1067 parms->APP_len, parms->COM_len);
1068
1069 return 0;
1070 }
1071
1072 /******************************************************************************
1073 *
1074 * ioctl_s_jpegcomp
1075 *
1076 * V4L2 set the JPEG compression parameters
1077 * NOTE: quality and some jpeg_markers are ignored.
1078 *
1079 *****************************************************************************/
1080
1081 static int cpia2_s_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompression *parms)
1082 {
1083 struct camera_data *cam = video_drvdata(file);
1084
1085 DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
1086 parms->APP_len, parms->COM_len);
1087
1088 cam->params.compression.inhibit_htables =
1089 !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
1090
1091 if(parms->APP_len != 0) {
1092 if(parms->APP_len > 0 &&
1093 parms->APP_len <= sizeof(cam->APP_data) &&
1094 parms->APPn >= 0 && parms->APPn <= 15) {
1095 cam->APPn = parms->APPn;
1096 cam->APP_len = parms->APP_len;
1097 memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
1098 } else {
1099 LOG("Bad APPn Params n=%d len=%d\n",
1100 parms->APPn, parms->APP_len);
1101 return -EINVAL;
1102 }
1103 } else {
1104 cam->APP_len = 0;
1105 }
1106
1107 if(parms->COM_len != 0) {
1108 if(parms->COM_len > 0 &&
1109 parms->COM_len <= sizeof(cam->COM_data)) {
1110 cam->COM_len = parms->COM_len;
1111 memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
1112 } else {
1113 LOG("Bad COM_len=%d\n", parms->COM_len);
1114 return -EINVAL;
1115 }
1116 }
1117
1118 return 0;
1119 }
1120
1121 /******************************************************************************
1122 *
1123 * ioctl_reqbufs
1124 *
1125 * V4L2 Initiate memory mapping.
1126 * NOTE: The user's request is ignored. For now the buffers are fixed.
1127 *
1128 *****************************************************************************/
1129
1130 static int cpia2_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *req)
1131 {
1132 struct camera_data *cam = video_drvdata(file);
1133
1134 if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1135 req->memory != V4L2_MEMORY_MMAP)
1136 return -EINVAL;
1137
1138 DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
1139 req->count = cam->num_frames;
1140 memset(&req->reserved, 0, sizeof(req->reserved));
1141
1142 return 0;
1143 }
1144
1145 /******************************************************************************
1146 *
1147 * ioctl_querybuf
1148 *
1149 * V4L2 Query memory buffer status.
1150 *
1151 *****************************************************************************/
1152
1153 static int cpia2_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1154 {
1155 struct camera_data *cam = video_drvdata(file);
1156
1157 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1158 buf->index > cam->num_frames)
1159 return -EINVAL;
1160
1161 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1162 buf->length = cam->frame_size;
1163
1164 buf->memory = V4L2_MEMORY_MMAP;
1165
1166 if(cam->mmapped)
1167 buf->flags = V4L2_BUF_FLAG_MAPPED;
1168 else
1169 buf->flags = 0;
1170
1171 switch (cam->buffers[buf->index].status) {
1172 case FRAME_EMPTY:
1173 case FRAME_ERROR:
1174 case FRAME_READING:
1175 buf->bytesused = 0;
1176 buf->flags = V4L2_BUF_FLAG_QUEUED;
1177 break;
1178 case FRAME_READY:
1179 buf->bytesused = cam->buffers[buf->index].length;
1180 buf->timestamp = cam->buffers[buf->index].timestamp;
1181 buf->sequence = cam->buffers[buf->index].seq;
1182 buf->flags = V4L2_BUF_FLAG_DONE;
1183 break;
1184 }
1185
1186 DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
1187 buf->index, buf->m.offset, buf->flags, buf->sequence,
1188 buf->bytesused);
1189
1190 return 0;
1191 }
1192
1193 /******************************************************************************
1194 *
1195 * ioctl_qbuf
1196 *
1197 * V4L2 User is freeing buffer
1198 *
1199 *****************************************************************************/
1200
1201 static int cpia2_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1202 {
1203 struct camera_data *cam = video_drvdata(file);
1204
1205 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1206 buf->memory != V4L2_MEMORY_MMAP ||
1207 buf->index > cam->num_frames)
1208 return -EINVAL;
1209
1210 DBG("QBUF #%d\n", buf->index);
1211
1212 if(cam->buffers[buf->index].status == FRAME_READY)
1213 cam->buffers[buf->index].status = FRAME_EMPTY;
1214
1215 return 0;
1216 }
1217
1218 /******************************************************************************
1219 *
1220 * find_earliest_filled_buffer
1221 *
1222 * Helper for ioctl_dqbuf. Find the next ready buffer.
1223 *
1224 *****************************************************************************/
1225
1226 static int find_earliest_filled_buffer(struct camera_data *cam)
1227 {
1228 int i;
1229 int found = -1;
1230 for (i=0; i<cam->num_frames; i++) {
1231 if(cam->buffers[i].status == FRAME_READY) {
1232 if(found < 0) {
1233 found = i;
1234 } else {
1235 /* find which buffer is earlier */
1236 struct timeval *tv1, *tv2;
1237 tv1 = &cam->buffers[i].timestamp;
1238 tv2 = &cam->buffers[found].timestamp;
1239 if(tv1->tv_sec < tv2->tv_sec ||
1240 (tv1->tv_sec == tv2->tv_sec &&
1241 tv1->tv_usec < tv2->tv_usec))
1242 found = i;
1243 }
1244 }
1245 }
1246 return found;
1247 }
1248
1249 /******************************************************************************
1250 *
1251 * ioctl_dqbuf
1252 *
1253 * V4L2 User is asking for a filled buffer.
1254 *
1255 *****************************************************************************/
1256
1257 static int cpia2_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
1258 {
1259 struct camera_data *cam = video_drvdata(file);
1260 int frame;
1261
1262 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1263 buf->memory != V4L2_MEMORY_MMAP)
1264 return -EINVAL;
1265
1266 frame = find_earliest_filled_buffer(cam);
1267
1268 if(frame < 0 && file->f_flags&O_NONBLOCK)
1269 return -EAGAIN;
1270
1271 if(frame < 0) {
1272 /* Wait for a frame to become available */
1273 struct framebuf *cb=cam->curbuff;
1274 mutex_unlock(&cam->v4l2_lock);
1275 wait_event_interruptible(cam->wq_stream,
1276 !cam->present ||
1277 (cb=cam->curbuff)->status == FRAME_READY);
1278 mutex_lock(&cam->v4l2_lock);
1279 if (signal_pending(current))
1280 return -ERESTARTSYS;
1281 if(!cam->present)
1282 return -ENOTTY;
1283 frame = cb->num;
1284 }
1285
1286
1287 buf->index = frame;
1288 buf->bytesused = cam->buffers[buf->index].length;
1289 buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
1290 buf->field = V4L2_FIELD_NONE;
1291 buf->timestamp = cam->buffers[buf->index].timestamp;
1292 buf->sequence = cam->buffers[buf->index].seq;
1293 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1294 buf->length = cam->frame_size;
1295 buf->input = 0;
1296 buf->reserved = 0;
1297 memset(&buf->timecode, 0, sizeof(buf->timecode));
1298
1299 DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
1300 cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
1301
1302 return 0;
1303 }
1304
1305 static int cpia2_g_priority(struct file *file, void *_fh, enum v4l2_priority *p)
1306 {
1307 struct cpia2_fh *fh = _fh;
1308
1309 *p = fh->prio;
1310 return 0;
1311 }
1312
1313 static int cpia2_s_priority(struct file *file, void *_fh, enum v4l2_priority prio)
1314 {
1315 struct camera_data *cam = video_drvdata(file);
1316 struct cpia2_fh *fh = fh;
1317
1318 if (cam->streaming && prio != fh->prio &&
1319 fh->prio == V4L2_PRIORITY_RECORD)
1320 /* Can't drop record priority while streaming */
1321 return -EBUSY;
1322
1323 if (prio == V4L2_PRIORITY_RECORD && prio != fh->prio &&
1324 v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD)
1325 /* Only one program can record at a time */
1326 return -EBUSY;
1327 return v4l2_prio_change(&cam->prio, &fh->prio, prio);
1328 }
1329
1330 static int cpia2_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1331 {
1332 struct camera_data *cam = video_drvdata(file);
1333
1334 DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
1335 if (!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1336 return -EINVAL;
1337
1338 if (!cam->streaming)
1339 return cpia2_usb_stream_start(cam,
1340 cam->params.camera_state.stream_mode);
1341 return -EINVAL;
1342 }
1343
1344 static int cpia2_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
1345 {
1346 struct camera_data *cam = video_drvdata(file);
1347
1348 DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
1349 if (!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1350 return -EINVAL;
1351
1352 if (cam->streaming)
1353 return cpia2_usb_stream_stop(cam);
1354 return -EINVAL;
1355 }
1356
1357 /******************************************************************************
1358 *
1359 * cpia2_mmap
1360 *
1361 *****************************************************************************/
1362 static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
1363 {
1364 struct camera_data *cam = video_drvdata(file);
1365 int retval;
1366
1367 /* Priority check */
1368 struct cpia2_fh *fh = file->private_data;
1369 if(fh->prio != V4L2_PRIORITY_RECORD) {
1370 return -EBUSY;
1371 }
1372
1373 retval = cpia2_remap_buffer(cam, area);
1374
1375 if(!retval)
1376 fh->mmapped = 1;
1377 return retval;
1378 }
1379
1380 /******************************************************************************
1381 *
1382 * reset_camera_struct_v4l
1383 *
1384 * Sets all values to the defaults
1385 *****************************************************************************/
1386 static void reset_camera_struct_v4l(struct camera_data *cam)
1387 {
1388 cam->width = cam->params.roi.width;
1389 cam->height = cam->params.roi.height;
1390
1391 cam->frame_size = buffer_size;
1392 cam->num_frames = num_buffers;
1393
1394 /* FlickerModes */
1395 cam->params.flicker_control.flicker_mode_req = flicker_mode;
1396 cam->params.flicker_control.mains_frequency = flicker_freq;
1397
1398 /* streamMode */
1399 cam->params.camera_state.stream_mode = alternate;
1400
1401 cam->pixelformat = V4L2_PIX_FMT_JPEG;
1402 v4l2_prio_init(&cam->prio);
1403 }
1404
1405 static const struct v4l2_ioctl_ops cpia2_ioctl_ops = {
1406 .vidioc_querycap = cpia2_querycap,
1407 .vidioc_enum_input = cpia2_enum_input,
1408 .vidioc_g_input = cpia2_g_input,
1409 .vidioc_s_input = cpia2_s_input,
1410 .vidioc_enum_fmt_vid_cap = cpia2_enum_fmt_vid_cap,
1411 .vidioc_g_fmt_vid_cap = cpia2_g_fmt_vid_cap,
1412 .vidioc_s_fmt_vid_cap = cpia2_s_fmt_vid_cap,
1413 .vidioc_try_fmt_vid_cap = cpia2_try_fmt_vid_cap,
1414 .vidioc_queryctrl = cpia2_queryctrl,
1415 .vidioc_querymenu = cpia2_querymenu,
1416 .vidioc_g_ctrl = cpia2_g_ctrl,
1417 .vidioc_s_ctrl = cpia2_s_ctrl,
1418 .vidioc_g_jpegcomp = cpia2_g_jpegcomp,
1419 .vidioc_s_jpegcomp = cpia2_s_jpegcomp,
1420 .vidioc_cropcap = cpia2_cropcap,
1421 .vidioc_reqbufs = cpia2_reqbufs,
1422 .vidioc_querybuf = cpia2_querybuf,
1423 .vidioc_qbuf = cpia2_qbuf,
1424 .vidioc_dqbuf = cpia2_dqbuf,
1425 .vidioc_streamon = cpia2_streamon,
1426 .vidioc_streamoff = cpia2_streamoff,
1427 .vidioc_g_priority = cpia2_g_priority,
1428 .vidioc_s_priority = cpia2_s_priority,
1429 .vidioc_default = cpia2_default,
1430 };
1431
1432 /***
1433 * The v4l video device structure initialized for this device
1434 ***/
1435 static const struct v4l2_file_operations cpia2_fops = {
1436 .owner = THIS_MODULE,
1437 .open = cpia2_open,
1438 .release = cpia2_close,
1439 .read = cpia2_v4l_read,
1440 .poll = cpia2_v4l_poll,
1441 .unlocked_ioctl = video_ioctl2,
1442 .mmap = cpia2_mmap,
1443 };
1444
1445 static struct video_device cpia2_template = {
1446 /* I could not find any place for the old .initialize initializer?? */
1447 .name = "CPiA2 Camera",
1448 .fops = &cpia2_fops,
1449 .ioctl_ops = &cpia2_ioctl_ops,
1450 .release = video_device_release,
1451 };
1452
1453 /******************************************************************************
1454 *
1455 * cpia2_register_camera
1456 *
1457 *****************************************************************************/
1458 int cpia2_register_camera(struct camera_data *cam)
1459 {
1460 cam->vdev = video_device_alloc();
1461 if(!cam->vdev)
1462 return -ENOMEM;
1463
1464 memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1465 video_set_drvdata(cam->vdev, cam);
1466 cam->vdev->lock = &cam->v4l2_lock;
1467
1468 reset_camera_struct_v4l(cam);
1469
1470 /* register v4l device */
1471 if (video_register_device(cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
1472 ERR("video_register_device failed\n");
1473 video_device_release(cam->vdev);
1474 return -ENODEV;
1475 }
1476
1477 return 0;
1478 }
1479
1480 /******************************************************************************
1481 *
1482 * cpia2_unregister_camera
1483 *
1484 *****************************************************************************/
1485 void cpia2_unregister_camera(struct camera_data *cam)
1486 {
1487 if (!cam->open_count) {
1488 video_unregister_device(cam->vdev);
1489 } else {
1490 LOG("%s removed while open, deferring "
1491 "video_unregister_device\n",
1492 video_device_node_name(cam->vdev));
1493 }
1494 }
1495
1496 /******************************************************************************
1497 *
1498 * check_parameters
1499 *
1500 * Make sure that all user-supplied parameters are sensible
1501 *****************************************************************************/
1502 static void __init check_parameters(void)
1503 {
1504 if(buffer_size < PAGE_SIZE) {
1505 buffer_size = PAGE_SIZE;
1506 LOG("buffer_size too small, setting to %d\n", buffer_size);
1507 } else if(buffer_size > 1024*1024) {
1508 /* arbitrary upper limiit */
1509 buffer_size = 1024*1024;
1510 LOG("buffer_size ridiculously large, setting to %d\n",
1511 buffer_size);
1512 } else {
1513 buffer_size += PAGE_SIZE-1;
1514 buffer_size &= ~(PAGE_SIZE-1);
1515 }
1516
1517 if(num_buffers < 1) {
1518 num_buffers = 1;
1519 LOG("num_buffers too small, setting to %d\n", num_buffers);
1520 } else if(num_buffers > VIDEO_MAX_FRAME) {
1521 num_buffers = VIDEO_MAX_FRAME;
1522 LOG("num_buffers too large, setting to %d\n", num_buffers);
1523 }
1524
1525 if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
1526 alternate = DEFAULT_ALT;
1527 LOG("alternate specified is invalid, using %d\n", alternate);
1528 }
1529
1530 if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
1531 flicker_mode = NEVER_FLICKER;
1532 LOG("Flicker mode specified is invalid, using %d\n",
1533 flicker_mode);
1534 }
1535
1536 if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
1537 flicker_freq = FLICKER_60;
1538 LOG("Flicker mode specified is invalid, using %d\n",
1539 flicker_freq);
1540 }
1541
1542 if(video_nr < -1 || video_nr > 64) {
1543 video_nr = -1;
1544 LOG("invalid video_nr specified, must be -1 to 64\n");
1545 }
1546
1547 DBG("Using %d buffers, each %d bytes, alternate=%d\n",
1548 num_buffers, buffer_size, alternate);
1549 }
1550
1551 /************ Module Stuff ***************/
1552
1553
1554 /******************************************************************************
1555 *
1556 * cpia2_init/module_init
1557 *
1558 *****************************************************************************/
1559 static int __init cpia2_init(void)
1560 {
1561 LOG("%s v%d.%d.%d\n",
1562 ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
1563 check_parameters();
1564 cpia2_usb_init();
1565 return 0;
1566 }
1567
1568
1569 /******************************************************************************
1570 *
1571 * cpia2_exit/module_exit
1572 *
1573 *****************************************************************************/
1574 static void __exit cpia2_exit(void)
1575 {
1576 cpia2_usb_cleanup();
1577 schedule_timeout(2 * HZ);
1578 }
1579
1580 module_init(cpia2_init);
1581 module_exit(cpia2_exit);
1582
Linux with added FPC-III support