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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / media / video / cpia2 / cpia2_v4l.c
blobe378abec806d21ddb75145ed7bb788bc620b57fc
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@redhat.com>
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
41 #include "cpia2.h"
42 #include "cpia2dev.h"
43
44
45 //#define _CPIA2_DEBUG_
46
47 #define MAKE_STRING_1(x) #x
48 #define MAKE_STRING(x) MAKE_STRING_1(x)
49
50 static int video_nr = -1;
51 module_param(video_nr, int, 0);
52 MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
53
54 static int buffer_size = 68*1024;
55 module_param(buffer_size, int, 0);
56 MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
57
58 static int num_buffers = 3;
59 module_param(num_buffers, int, 0);
60 MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
61 MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)");
62
63 static int alternate = DEFAULT_ALT;
64 module_param(alternate, int, 0);
65 MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-"
66 MAKE_STRING(USBIF_ISO_6) ", default "
67 MAKE_STRING(DEFAULT_ALT) ")");
68
69 static int flicker_freq = 60;
70 module_param(flicker_freq, int, 0);
71 MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or"
72 MAKE_STRING(60) ", default "
73 MAKE_STRING(60) ")");
74
75 static int flicker_mode = NEVER_FLICKER;
76 module_param(flicker_mode, int, 0);
77 MODULE_PARM_DESC(flicker_mode,
78 "Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or"
79 MAKE_STRING(ANTI_FLICKER_ON) ", default "
80 MAKE_STRING(NEVER_FLICKER) ")");
81
82 MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
83 MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
84 MODULE_SUPPORTED_DEVICE("video");
85 MODULE_LICENSE("GPL");
86
87 #define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
88
89 struct control_menu_info {
90 int value;
91 char name[32];
92 };
93
94 static struct control_menu_info framerate_controls[] =
95 {
96 { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
97 { CPIA2_VP_FRAMERATE_7_5, "7.5 fps" },
98 { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
99 { CPIA2_VP_FRAMERATE_15, "15 fps" },
100 { CPIA2_VP_FRAMERATE_25, "25 fps" },
101 { CPIA2_VP_FRAMERATE_30, "30 fps" },
102 };
103 #define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
104
105 static struct control_menu_info flicker_controls[] =
106 {
107 { NEVER_FLICKER, "Off" },
108 { FLICKER_50, "50 Hz" },
109 { FLICKER_60, "60 Hz" },
110 };
111 #define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
112
113 static struct control_menu_info lights_controls[] =
114 {
115 { 0, "Off" },
116 { 64, "Top" },
117 { 128, "Bottom" },
118 { 192, "Both" },
119 };
120 #define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
121 #define GPIO_LIGHTS_MASK 192
122
123 static struct v4l2_queryctrl controls[] = {
124 {
125 .id = V4L2_CID_BRIGHTNESS,
126 .type = V4L2_CTRL_TYPE_INTEGER,
127 .name = "Brightness",
128 .minimum = 0,
129 .maximum = 255,
130 .step = 1,
131 .default_value = DEFAULT_BRIGHTNESS,
132 },
133 {
134 .id = V4L2_CID_CONTRAST,
135 .type = V4L2_CTRL_TYPE_INTEGER,
136 .name = "Contrast",
137 .minimum = 0,
138 .maximum = 255,
139 .step = 1,
140 .default_value = DEFAULT_CONTRAST,
141 },
142 {
143 .id = V4L2_CID_SATURATION,
144 .type = V4L2_CTRL_TYPE_INTEGER,
145 .name = "Saturation",
146 .minimum = 0,
147 .maximum = 255,
148 .step = 1,
149 .default_value = DEFAULT_SATURATION,
150 },
151 {
152 .id = V4L2_CID_HFLIP,
153 .type = V4L2_CTRL_TYPE_BOOLEAN,
154 .name = "Mirror Horizontally",
155 .minimum = 0,
156 .maximum = 1,
157 .step = 1,
158 .default_value = 0,
159 },
160 {
161 .id = V4L2_CID_VFLIP,
162 .type = V4L2_CTRL_TYPE_BOOLEAN,
163 .name = "Flip Vertically",
164 .minimum = 0,
165 .maximum = 1,
166 .step = 1,
167 .default_value = 0,
168 },
169 {
170 .id = CPIA2_CID_TARGET_KB,
171 .type = V4L2_CTRL_TYPE_INTEGER,
172 .name = "Target KB",
173 .minimum = 0,
174 .maximum = 255,
175 .step = 1,
176 .default_value = DEFAULT_TARGET_KB,
177 },
178 {
179 .id = CPIA2_CID_GPIO,
180 .type = V4L2_CTRL_TYPE_INTEGER,
181 .name = "GPIO",
182 .minimum = 0,
183 .maximum = 255,
184 .step = 1,
185 .default_value = 0,
186 },
187 {
188 .id = CPIA2_CID_FLICKER_MODE,
189 .type = V4L2_CTRL_TYPE_MENU,
190 .name = "Flicker Reduction",
191 .minimum = 0,
192 .maximum = NUM_FLICKER_CONTROLS-1,
193 .step = 1,
194 .default_value = 0,
195 },
196 {
197 .id = CPIA2_CID_FRAMERATE,
198 .type = V4L2_CTRL_TYPE_MENU,
199 .name = "Framerate",
200 .minimum = 0,
201 .maximum = NUM_FRAMERATE_CONTROLS-1,
202 .step = 1,
203 .default_value = NUM_FRAMERATE_CONTROLS-1,
204 },
205 {
206 .id = CPIA2_CID_USB_ALT,
207 .type = V4L2_CTRL_TYPE_INTEGER,
208 .name = "USB Alternate",
209 .minimum = USBIF_ISO_1,
210 .maximum = USBIF_ISO_6,
211 .step = 1,
212 .default_value = DEFAULT_ALT,
213 },
214 {
215 .id = CPIA2_CID_LIGHTS,
216 .type = V4L2_CTRL_TYPE_MENU,
217 .name = "Lights",
218 .minimum = 0,
219 .maximum = NUM_LIGHTS_CONTROLS-1,
220 .step = 1,
221 .default_value = 0,
222 },
223 {
224 .id = CPIA2_CID_RESET_CAMERA,
225 .type = V4L2_CTRL_TYPE_BUTTON,
226 .name = "Reset Camera",
227 .minimum = 0,
228 .maximum = 0,
229 .step = 0,
230 .default_value = 0,
231 },
232 };
233 #define NUM_CONTROLS (ARRAY_SIZE(controls))
234
235
236 /******************************************************************************
237 *
238 * cpia2_open
239 *
240 *****************************************************************************/
241 static int cpia2_open(struct inode *inode, struct file *file)
242 {
243 struct video_device *dev = video_devdata(file);
244 struct camera_data *cam = video_get_drvdata(dev);
245 int retval = 0;
246
247 if (!cam) {
248 ERR("Internal error, camera_data not found!\n");
249 return -ENODEV;
250 }
251
252 if(mutex_lock_interruptible(&cam->busy_lock))
253 return -ERESTARTSYS;
254
255 if(!cam->present) {
256 retval = -ENODEV;
257 goto err_return;
258 }
259
260 if (cam->open_count > 0) {
261 goto skip_init;
262 }
263
264 if (cpia2_allocate_buffers(cam)) {
265 retval = -ENOMEM;
266 goto err_return;
267 }
268
269 /* reset the camera */
270 if (cpia2_reset_camera(cam) < 0) {
271 retval = -EIO;
272 goto err_return;
273 }
274
275 cam->APP_len = 0;
276 cam->COM_len = 0;
277
278 skip_init:
279 {
280 struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL);
281 if(!fh) {
282 retval = -ENOMEM;
283 goto err_return;
284 }
285 file->private_data = fh;
286 fh->prio = V4L2_PRIORITY_UNSET;
287 v4l2_prio_open(&cam->prio, &fh->prio);
288 fh->mmapped = 0;
289 }
290
291 ++cam->open_count;
292
293 cpia2_dbg_dump_registers(cam);
294
295 err_return:
296 mutex_unlock(&cam->busy_lock);
297 return retval;
298 }
299
300 /******************************************************************************
301 *
302 * cpia2_close
303 *
304 *****************************************************************************/
305 static int cpia2_close(struct inode *inode, struct file *file)
306 {
307 struct video_device *dev = video_devdata(file);
308 struct camera_data *cam = video_get_drvdata(dev);
309 struct cpia2_fh *fh = file->private_data;
310
311 mutex_lock(&cam->busy_lock);
312
313 if (cam->present &&
314 (cam->open_count == 1
315 || fh->prio == V4L2_PRIORITY_RECORD
316 )) {
317 cpia2_usb_stream_stop(cam);
318
319 if(cam->open_count == 1) {
320 /* save camera state for later open */
321 cpia2_save_camera_state(cam);
322
323 cpia2_set_low_power(cam);
324 cpia2_free_buffers(cam);
325 }
326 }
327
328 {
329 if(fh->mmapped)
330 cam->mmapped = 0;
331 v4l2_prio_close(&cam->prio,&fh->prio);
332 file->private_data = NULL;
333 kfree(fh);
334 }
335
336 if (--cam->open_count == 0) {
337 cpia2_free_buffers(cam);
338 if (!cam->present) {
339 video_unregister_device(dev);
340 mutex_unlock(&cam->busy_lock);
341 kfree(cam);
342 return 0;
343 }
344 }
345
346 mutex_unlock(&cam->busy_lock);
347
348 return 0;
349 }
350
351 /******************************************************************************
352 *
353 * cpia2_v4l_read
354 *
355 *****************************************************************************/
356 static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
357 loff_t *off)
358 {
359 struct video_device *dev = video_devdata(file);
360 struct camera_data *cam = video_get_drvdata(dev);
361 int noblock = file->f_flags&O_NONBLOCK;
362
363 struct cpia2_fh *fh = file->private_data;
364
365 if(!cam)
366 return -EINVAL;
367
368 /* Priority check */
369 if(fh->prio != V4L2_PRIORITY_RECORD) {
370 return -EBUSY;
371 }
372
373 return cpia2_read(cam, buf, count, noblock);
374 }
375
376
377 /******************************************************************************
378 *
379 * cpia2_v4l_poll
380 *
381 *****************************************************************************/
382 static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
383 {
384 struct video_device *dev = video_devdata(filp);
385 struct camera_data *cam = video_get_drvdata(dev);
386
387 struct cpia2_fh *fh = filp->private_data;
388
389 if(!cam)
390 return POLLERR;
391
392 /* Priority check */
393 if(fh->prio != V4L2_PRIORITY_RECORD) {
394 return POLLERR;
395 }
396
397 return cpia2_poll(cam, filp, wait);
398 }
399
400
401 /******************************************************************************
402 *
403 * ioctl_cap_query
404 *
405 *****************************************************************************/
406 static int ioctl_cap_query(void *arg, struct camera_data *cam)
407 {
408 struct video_capability *vc;
409 int retval = 0;
410 vc = arg;
411
412 if (cam->params.pnp_id.product == 0x151)
413 strcpy(vc->name, "QX5 Microscope");
414 else
415 strcpy(vc->name, "CPiA2 Camera");
416
417 vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
418 vc->channels = 1;
419 vc->audios = 0;
420 vc->minwidth = 176; /* VIDEOSIZE_QCIF */
421 vc->minheight = 144;
422 switch (cam->params.version.sensor_flags) {
423 case CPIA2_VP_SENSOR_FLAGS_500:
424 vc->maxwidth = STV_IMAGE_VGA_COLS;
425 vc->maxheight = STV_IMAGE_VGA_ROWS;
426 break;
427 case CPIA2_VP_SENSOR_FLAGS_410:
428 vc->maxwidth = STV_IMAGE_CIF_COLS;
429 vc->maxheight = STV_IMAGE_CIF_ROWS;
430 break;
431 default:
432 return -EINVAL;
433 }
434
435 return retval;
436 }
437
438 /******************************************************************************
439 *
440 * ioctl_get_channel
441 *
442 *****************************************************************************/
443 static int ioctl_get_channel(void *arg)
444 {
445 int retval = 0;
446 struct video_channel *v;
447 v = arg;
448
449 if (v->channel != 0)
450 return -EINVAL;
451
452 v->channel = 0;
453 strcpy(v->name, "Camera");
454 v->tuners = 0;
455 v->flags = 0;
456 v->type = VIDEO_TYPE_CAMERA;
457 v->norm = 0;
458
459 return retval;
460 }
461
462 /******************************************************************************
463 *
464 * ioctl_set_channel
465 *
466 *****************************************************************************/
467 static int ioctl_set_channel(void *arg)
468 {
469 struct video_channel *v;
470 int retval = 0;
471 v = arg;
472
473 if (retval == 0 && v->channel != 0)
474 retval = -EINVAL;
475
476 return retval;
477 }
478
479 /******************************************************************************
480 *
481 * ioctl_set_image_prop
482 *
483 *****************************************************************************/
484 static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
485 {
486 struct video_picture *vp;
487 int retval = 0;
488 vp = arg;
489
490 /* brightness, color, contrast need no check 0-65535 */
491 memcpy(&cam->vp, vp, sizeof(*vp));
492
493 /* update cam->params.colorParams */
494 cam->params.color_params.brightness = vp->brightness / 256;
495 cam->params.color_params.saturation = vp->colour / 256;
496 cam->params.color_params.contrast = vp->contrast / 256;
497
498 DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
499 cam->params.color_params.brightness,
500 cam->params.color_params.saturation,
501 cam->params.color_params.contrast);
502
503 cpia2_set_color_params(cam);
504
505 return retval;
506 }
507
508 static int sync(struct camera_data *cam, int frame_nr)
509 {
510 struct framebuf *frame = &cam->buffers[frame_nr];
511
512 while (1) {
513 if (frame->status == FRAME_READY)
514 return 0;
515
516 if (!cam->streaming) {
517 frame->status = FRAME_READY;
518 frame->length = 0;
519 return 0;
520 }
521
522 mutex_unlock(&cam->busy_lock);
523 wait_event_interruptible(cam->wq_stream,
524 !cam->streaming ||
525 frame->status == FRAME_READY);
526 mutex_lock(&cam->busy_lock);
527 if (signal_pending(current))
528 return -ERESTARTSYS;
529 if(!cam->present)
530 return -ENOTTY;
531 }
532 }
533
534 /******************************************************************************
535 *
536 * ioctl_set_window_size
537 *
538 *****************************************************************************/
539 static int ioctl_set_window_size(void *arg, struct camera_data *cam,
540 struct cpia2_fh *fh)
541 {
542 /* copy_from_user, check validity, copy to internal structure */
543 struct video_window *vw;
544 int frame, err;
545 vw = arg;
546
547 if (vw->clipcount != 0) /* clipping not supported */
548 return -EINVAL;
549
550 if (vw->clips != NULL) /* clipping not supported */
551 return -EINVAL;
552
553 /* Ensure that only this process can change the format. */
554 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
555 if(err != 0)
556 return err;
557
558 cam->pixelformat = V4L2_PIX_FMT_JPEG;
559
560 /* Be sure to supply the Huffman tables, this isn't MJPEG */
561 cam->params.compression.inhibit_htables = 0;
562
563 /* we set the video window to something smaller or equal to what
564 * is requested by the user???
565 */
566 DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
567 if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
568 cam->vw.width = vw->width;
569 cam->vw.height = vw->height;
570 cam->params.roi.width = vw->width;
571 cam->params.roi.height = vw->height;
572 cpia2_set_format(cam);
573 }
574
575 for (frame = 0; frame < cam->num_frames; ++frame) {
576 if (cam->buffers[frame].status == FRAME_READING)
577 if ((err = sync(cam, frame)) < 0)
578 return err;
579
580 cam->buffers[frame].status = FRAME_EMPTY;
581 }
582
583 return 0;
584 }
585
586 /******************************************************************************
587 *
588 * ioctl_get_mbuf
589 *
590 *****************************************************************************/
591 static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
592 {
593 struct video_mbuf *vm;
594 int i;
595 vm = arg;
596
597 memset(vm, 0, sizeof(*vm));
598 vm->size = cam->frame_size*cam->num_frames;
599 vm->frames = cam->num_frames;
600 for (i = 0; i < cam->num_frames; i++)
601 vm->offsets[i] = cam->frame_size * i;
602
603 return 0;
604 }
605
606 /******************************************************************************
607 *
608 * ioctl_mcapture
609 *
610 *****************************************************************************/
611 static int ioctl_mcapture(void *arg, struct camera_data *cam,
612 struct cpia2_fh *fh)
613 {
614 struct video_mmap *vm;
615 int video_size, err;
616 vm = arg;
617
618 if (vm->frame < 0 || vm->frame >= cam->num_frames)
619 return -EINVAL;
620
621 /* set video size */
622 video_size = cpia2_match_video_size(vm->width, vm->height);
623 if (cam->video_size < 0) {
624 return -EINVAL;
625 }
626
627 /* Ensure that only this process can change the format. */
628 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
629 if(err != 0)
630 return err;
631
632 if (video_size != cam->video_size) {
633 cam->video_size = video_size;
634 cam->params.roi.width = vm->width;
635 cam->params.roi.height = vm->height;
636 cpia2_set_format(cam);
637 }
638
639 if (cam->buffers[vm->frame].status == FRAME_READING)
640 if ((err=sync(cam, vm->frame)) < 0)
641 return err;
642
643 cam->buffers[vm->frame].status = FRAME_EMPTY;
644
645 return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
646 }
647
648 /******************************************************************************
649 *
650 * ioctl_sync
651 *
652 *****************************************************************************/
653 static int ioctl_sync(void *arg, struct camera_data *cam)
654 {
655 int frame;
656
657 frame = *(int*)arg;
658
659 if (frame < 0 || frame >= cam->num_frames)
660 return -EINVAL;
661
662 return sync(cam, frame);
663 }
664
665
666 /******************************************************************************
667 *
668 * ioctl_set_gpio
669 *
670 *****************************************************************************/
671
672 static int ioctl_set_gpio(void *arg, struct camera_data *cam)
673 {
674 __u32 gpio_val;
675
676 gpio_val = *(__u32*) arg;
677
678 if (gpio_val &~ 0xFFU)
679 return -EINVAL;
680
681 return cpia2_set_gpio(cam, (unsigned char)gpio_val);
682 }
683
684 /******************************************************************************
685 *
686 * ioctl_querycap
687 *
688 * V4L2 device capabilities
689 *
690 *****************************************************************************/
691
692 static int ioctl_querycap(void *arg, struct camera_data *cam)
693 {
694 struct v4l2_capability *vc = arg;
695
696 memset(vc, 0, sizeof(*vc));
697 strcpy(vc->driver, "cpia2");
698
699 if (cam->params.pnp_id.product == 0x151)
700 strcpy(vc->card, "QX5 Microscope");
701 else
702 strcpy(vc->card, "CPiA2 Camera");
703 switch (cam->params.pnp_id.device_type) {
704 case DEVICE_STV_672:
705 strcat(vc->card, " (672/");
706 break;
707 case DEVICE_STV_676:
708 strcat(vc->card, " (676/");
709 break;
710 default:
711 strcat(vc->card, " (???/");
712 break;
713 }
714 switch (cam->params.version.sensor_flags) {
715 case CPIA2_VP_SENSOR_FLAGS_404:
716 strcat(vc->card, "404)");
717 break;
718 case CPIA2_VP_SENSOR_FLAGS_407:
719 strcat(vc->card, "407)");
720 break;
721 case CPIA2_VP_SENSOR_FLAGS_409:
722 strcat(vc->card, "409)");
723 break;
724 case CPIA2_VP_SENSOR_FLAGS_410:
725 strcat(vc->card, "410)");
726 break;
727 case CPIA2_VP_SENSOR_FLAGS_500:
728 strcat(vc->card, "500)");
729 break;
730 default:
731 strcat(vc->card, "???)");
732 break;
733 }
734
735 if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
736 memset(vc->bus_info,0, sizeof(vc->bus_info));
737
738 vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
739 CPIA2_PATCH_VER);
740
741 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
742 V4L2_CAP_READWRITE |
743 V4L2_CAP_STREAMING;
744
745 return 0;
746 }
747
748 /******************************************************************************
749 *
750 * ioctl_input
751 *
752 * V4L2 input get/set/enumerate
753 *
754 *****************************************************************************/
755
756 static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
757 {
758 struct v4l2_input *i = arg;
759
760 if(ioclt_nr != VIDIOC_G_INPUT) {
761 if (i->index != 0)
762 return -EINVAL;
763 }
764
765 memset(i, 0, sizeof(*i));
766 strcpy(i->name, "Camera");
767 i->type = V4L2_INPUT_TYPE_CAMERA;
768
769 return 0;
770 }
771
772 /******************************************************************************
773 *
774 * ioctl_enum_fmt
775 *
776 * V4L2 format enumerate
777 *
778 *****************************************************************************/
779
780 static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
781 {
782 struct v4l2_fmtdesc *f = arg;
783 int index = f->index;
784
785 if (index < 0 || index > 1)
786 return -EINVAL;
787
788 memset(f, 0, sizeof(*f));
789 f->index = index;
790 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
791 f->flags = V4L2_FMT_FLAG_COMPRESSED;
792 switch(index) {
793 case 0:
794 strcpy(f->description, "MJPEG");
795 f->pixelformat = V4L2_PIX_FMT_MJPEG;
796 break;
797 case 1:
798 strcpy(f->description, "JPEG");
799 f->pixelformat = V4L2_PIX_FMT_JPEG;
800 break;
801 default:
802 return -EINVAL;
803 }
804
805 return 0;
806 }
807
808 /******************************************************************************
809 *
810 * ioctl_try_fmt
811 *
812 * V4L2 format try
813 *
814 *****************************************************************************/
815
816 static int ioctl_try_fmt(void *arg,struct camera_data *cam)
817 {
818 struct v4l2_format *f = arg;
819
820 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
821 return -EINVAL;
822
823 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
824 f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
825 return -EINVAL;
826
827 f->fmt.pix.field = V4L2_FIELD_NONE;
828 f->fmt.pix.bytesperline = 0;
829 f->fmt.pix.sizeimage = cam->frame_size;
830 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
831 f->fmt.pix.priv = 0;
832
833 switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
834 case VIDEOSIZE_VGA:
835 f->fmt.pix.width = 640;
836 f->fmt.pix.height = 480;
837 break;
838 case VIDEOSIZE_CIF:
839 f->fmt.pix.width = 352;
840 f->fmt.pix.height = 288;
841 break;
842 case VIDEOSIZE_QVGA:
843 f->fmt.pix.width = 320;
844 f->fmt.pix.height = 240;
845 break;
846 case VIDEOSIZE_288_216:
847 f->fmt.pix.width = 288;
848 f->fmt.pix.height = 216;
849 break;
850 case VIDEOSIZE_256_192:
851 f->fmt.pix.width = 256;
852 f->fmt.pix.height = 192;
853 break;
854 case VIDEOSIZE_224_168:
855 f->fmt.pix.width = 224;
856 f->fmt.pix.height = 168;
857 break;
858 case VIDEOSIZE_192_144:
859 f->fmt.pix.width = 192;
860 f->fmt.pix.height = 144;
861 break;
862 case VIDEOSIZE_QCIF:
863 default:
864 f->fmt.pix.width = 176;
865 f->fmt.pix.height = 144;
866 break;
867 }
868
869 return 0;
870 }
871
872 /******************************************************************************
873 *
874 * ioctl_set_fmt
875 *
876 * V4L2 format set
877 *
878 *****************************************************************************/
879
880 static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
881 {
882 struct v4l2_format *f = arg;
883 int err, frame;
884
885 err = ioctl_try_fmt(arg, cam);
886 if(err != 0)
887 return err;
888
889 /* Ensure that only this process can change the format. */
890 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
891 if(err != 0) {
892 return err;
893 }
894
895 cam->pixelformat = f->fmt.pix.pixelformat;
896
897 /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
898 * the missing Huffman table properly. */
899 cam->params.compression.inhibit_htables = 0;
900 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
901
902 /* we set the video window to something smaller or equal to what
903 * is requested by the user???
904 */
905 DBG("Requested width = %d, height = %d\n",
906 f->fmt.pix.width, f->fmt.pix.height);
907 if (f->fmt.pix.width != cam->vw.width ||
908 f->fmt.pix.height != cam->vw.height) {
909 cam->vw.width = f->fmt.pix.width;
910 cam->vw.height = f->fmt.pix.height;
911 cam->params.roi.width = f->fmt.pix.width;
912 cam->params.roi.height = f->fmt.pix.height;
913 cpia2_set_format(cam);
914 }
915
916 for (frame = 0; frame < cam->num_frames; ++frame) {
917 if (cam->buffers[frame].status == FRAME_READING)
918 if ((err = sync(cam, frame)) < 0)
919 return err;
920
921 cam->buffers[frame].status = FRAME_EMPTY;
922 }
923
924 return 0;
925 }
926
927 /******************************************************************************
928 *
929 * ioctl_get_fmt
930 *
931 * V4L2 format get
932 *
933 *****************************************************************************/
934
935 static int ioctl_get_fmt(void *arg,struct camera_data *cam)
936 {
937 struct v4l2_format *f = arg;
938
939 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
940 return -EINVAL;
941
942 f->fmt.pix.width = cam->vw.width;
943 f->fmt.pix.height = cam->vw.height;
944 f->fmt.pix.pixelformat = cam->pixelformat;
945 f->fmt.pix.field = V4L2_FIELD_NONE;
946 f->fmt.pix.bytesperline = 0;
947 f->fmt.pix.sizeimage = cam->frame_size;
948 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
949 f->fmt.pix.priv = 0;
950
951 return 0;
952 }
953
954 /******************************************************************************
955 *
956 * ioctl_cropcap
957 *
958 * V4L2 query cropping capabilities
959 * NOTE: cropping is currently disabled
960 *
961 *****************************************************************************/
962
963 static int ioctl_cropcap(void *arg,struct camera_data *cam)
964 {
965 struct v4l2_cropcap *c = arg;
966
967 if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
968 return -EINVAL;
969
970 c->bounds.left = 0;
971 c->bounds.top = 0;
972 c->bounds.width = cam->vw.width;
973 c->bounds.height = cam->vw.height;
974 c->defrect.left = 0;
975 c->defrect.top = 0;
976 c->defrect.width = cam->vw.width;
977 c->defrect.height = cam->vw.height;
978 c->pixelaspect.numerator = 1;
979 c->pixelaspect.denominator = 1;
980
981 return 0;
982 }
983
984 /******************************************************************************
985 *
986 * ioctl_queryctrl
987 *
988 * V4L2 query possible control variables
989 *
990 *****************************************************************************/
991
992 static int ioctl_queryctrl(void *arg,struct camera_data *cam)
993 {
994 struct v4l2_queryctrl *c = arg;
995 int i;
996
997 for(i=0; i<NUM_CONTROLS; ++i) {
998 if(c->id == controls[i].id) {
999 memcpy(c, controls+i, sizeof(*c));
1000 break;
1001 }
1002 }
1003
1004 if(i == NUM_CONTROLS)
1005 return -EINVAL;
1006
1007 /* Some devices have additional limitations */
1008 switch(c->id) {
1009 case V4L2_CID_BRIGHTNESS:
1010 /***
1011 * Don't let the register be set to zero - bug in VP4
1012 * flash of full brightness
1013 ***/
1014 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
1015 c->minimum = 1;
1016 break;
1017 case V4L2_CID_VFLIP:
1018 // VP5 Only
1019 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
1020 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1021 break;
1022 case CPIA2_CID_FRAMERATE:
1023 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1024 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1025 // Maximum 15fps
1026 int i;
1027 for(i=0; i<c->maximum; ++i) {
1028 if(framerate_controls[i].value ==
1029 CPIA2_VP_FRAMERATE_15) {
1030 c->maximum = i;
1031 c->default_value = i;
1032 }
1033 }
1034 }
1035 break;
1036 case CPIA2_CID_FLICKER_MODE:
1037 // Flicker control only valid for 672.
1038 if(cam->params.pnp_id.device_type != DEVICE_STV_672)
1039 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1040 break;
1041 case CPIA2_CID_LIGHTS:
1042 // Light control only valid for the QX5 Microscope.
1043 if(cam->params.pnp_id.product != 0x151)
1044 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1045 break;
1046 default:
1047 break;
1048 }
1049
1050 return 0;
1051 }
1052
1053 /******************************************************************************
1054 *
1055 * ioctl_querymenu
1056 *
1057 * V4L2 query possible control variables
1058 *
1059 *****************************************************************************/
1060
1061 static int ioctl_querymenu(void *arg,struct camera_data *cam)
1062 {
1063 struct v4l2_querymenu *m = arg;
1064
1065 memset(m->name, 0, sizeof(m->name));
1066 m->reserved = 0;
1067
1068 switch(m->id) {
1069 case CPIA2_CID_FLICKER_MODE:
1070 if(m->index < 0 || m->index >= NUM_FLICKER_CONTROLS)
1071 return -EINVAL;
1072
1073 strcpy(m->name, flicker_controls[m->index].name);
1074 break;
1075 case CPIA2_CID_FRAMERATE:
1076 {
1077 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1078 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1079 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1080 // Maximum 15fps
1081 int i;
1082 for(i=0; i<maximum; ++i) {
1083 if(framerate_controls[i].value ==
1084 CPIA2_VP_FRAMERATE_15)
1085 maximum = i;
1086 }
1087 }
1088 if(m->index < 0 || m->index > maximum)
1089 return -EINVAL;
1090
1091 strcpy(m->name, framerate_controls[m->index].name);
1092 break;
1093 }
1094 case CPIA2_CID_LIGHTS:
1095 if(m->index < 0 || m->index >= NUM_LIGHTS_CONTROLS)
1096 return -EINVAL;
1097
1098 strcpy(m->name, lights_controls[m->index].name);
1099 break;
1100 default:
1101 return -EINVAL;
1102 }
1103
1104 return 0;
1105 }
1106
1107 /******************************************************************************
1108 *
1109 * ioctl_g_ctrl
1110 *
1111 * V4L2 get the value of a control variable
1112 *
1113 *****************************************************************************/
1114
1115 static int ioctl_g_ctrl(void *arg,struct camera_data *cam)
1116 {
1117 struct v4l2_control *c = arg;
1118
1119 switch(c->id) {
1120 case V4L2_CID_BRIGHTNESS:
1121 cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
1122 TRANSFER_READ, 0);
1123 c->value = cam->params.color_params.brightness;
1124 break;
1125 case V4L2_CID_CONTRAST:
1126 cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
1127 TRANSFER_READ, 0);
1128 c->value = cam->params.color_params.contrast;
1129 break;
1130 case V4L2_CID_SATURATION:
1131 cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
1132 TRANSFER_READ, 0);
1133 c->value = cam->params.color_params.saturation;
1134 break;
1135 case V4L2_CID_HFLIP:
1136 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1137 TRANSFER_READ, 0);
1138 c->value = (cam->params.vp_params.user_effects &
1139 CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
1140 break;
1141 case V4L2_CID_VFLIP:
1142 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1143 TRANSFER_READ, 0);
1144 c->value = (cam->params.vp_params.user_effects &
1145 CPIA2_VP_USER_EFFECTS_FLIP) != 0;
1146 break;
1147 case CPIA2_CID_TARGET_KB:
1148 c->value = cam->params.vc_params.target_kb;
1149 break;
1150 case CPIA2_CID_GPIO:
1151 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1152 TRANSFER_READ, 0);
1153 c->value = cam->params.vp_params.gpio_data;
1154 break;
1155 case CPIA2_CID_FLICKER_MODE:
1156 {
1157 int i, mode;
1158 cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
1159 TRANSFER_READ, 0);
1160 if(cam->params.flicker_control.cam_register &
1161 CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
1162 mode = NEVER_FLICKER;
1163 } else {
1164 if(cam->params.flicker_control.cam_register &
1165 CPIA2_VP_FLICKER_MODES_50HZ) {
1166 mode = FLICKER_50;
1167 } else {
1168 mode = FLICKER_60;
1169 }
1170 }
1171 for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
1172 if(flicker_controls[i].value == mode) {
1173 c->value = i;
1174 break;
1175 }
1176 }
1177 if(i == NUM_FLICKER_CONTROLS)
1178 return -EINVAL;
1179 break;
1180 }
1181 case CPIA2_CID_FRAMERATE:
1182 {
1183 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1184 int i;
1185 for(i=0; i<= maximum; i++) {
1186 if(cam->params.vp_params.frame_rate ==
1187 framerate_controls[i].value)
1188 break;
1189 }
1190 if(i > maximum)
1191 return -EINVAL;
1192 c->value = i;
1193 break;
1194 }
1195 case CPIA2_CID_USB_ALT:
1196 c->value = cam->params.camera_state.stream_mode;
1197 break;
1198 case CPIA2_CID_LIGHTS:
1199 {
1200 int i;
1201 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1202 TRANSFER_READ, 0);
1203 for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
1204 if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
1205 lights_controls[i].value) {
1206 break;
1207 }
1208 }
1209 if(i == NUM_LIGHTS_CONTROLS)
1210 return -EINVAL;
1211 c->value = i;
1212 break;
1213 }
1214 case CPIA2_CID_RESET_CAMERA:
1215 return -EINVAL;
1216 default:
1217 return -EINVAL;
1218 }
1219
1220 DBG("Get control id:%d, value:%d\n", c->id, c->value);
1221
1222 return 0;
1223 }
1224
1225 /******************************************************************************
1226 *
1227 * ioctl_s_ctrl
1228 *
1229 * V4L2 set the value of a control variable
1230 *
1231 *****************************************************************************/
1232
1233 static int ioctl_s_ctrl(void *arg,struct camera_data *cam)
1234 {
1235 struct v4l2_control *c = arg;
1236 int i;
1237 int retval = 0;
1238
1239 DBG("Set control id:%d, value:%d\n", c->id, c->value);
1240
1241 /* Check that the value is in range */
1242 for(i=0; i<NUM_CONTROLS; i++) {
1243 if(c->id == controls[i].id) {
1244 if(c->value < controls[i].minimum ||
1245 c->value > controls[i].maximum) {
1246 return -EINVAL;
1247 }
1248 break;
1249 }
1250 }
1251 if(i == NUM_CONTROLS)
1252 return -EINVAL;
1253
1254 switch(c->id) {
1255 case V4L2_CID_BRIGHTNESS:
1256 cpia2_set_brightness(cam, c->value);
1257 break;
1258 case V4L2_CID_CONTRAST:
1259 cpia2_set_contrast(cam, c->value);
1260 break;
1261 case V4L2_CID_SATURATION:
1262 cpia2_set_saturation(cam, c->value);
1263 break;
1264 case V4L2_CID_HFLIP:
1265 cpia2_set_property_mirror(cam, c->value);
1266 break;
1267 case V4L2_CID_VFLIP:
1268 cpia2_set_property_flip(cam, c->value);
1269 break;
1270 case CPIA2_CID_TARGET_KB:
1271 retval = cpia2_set_target_kb(cam, c->value);
1272 break;
1273 case CPIA2_CID_GPIO:
1274 retval = cpia2_set_gpio(cam, c->value);
1275 break;
1276 case CPIA2_CID_FLICKER_MODE:
1277 retval = cpia2_set_flicker_mode(cam,
1278 flicker_controls[c->value].value);
1279 break;
1280 case CPIA2_CID_FRAMERATE:
1281 retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
1282 break;
1283 case CPIA2_CID_USB_ALT:
1284 retval = cpia2_usb_change_streaming_alternate(cam, c->value);
1285 break;
1286 case CPIA2_CID_LIGHTS:
1287 retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
1288 break;
1289 case CPIA2_CID_RESET_CAMERA:
1290 cpia2_usb_stream_pause(cam);
1291 cpia2_reset_camera(cam);
1292 cpia2_usb_stream_resume(cam);
1293 break;
1294 default:
1295 retval = -EINVAL;
1296 }
1297
1298 return retval;
1299 }
1300
1301 /******************************************************************************
1302 *
1303 * ioctl_g_jpegcomp
1304 *
1305 * V4L2 get the JPEG compression parameters
1306 *
1307 *****************************************************************************/
1308
1309 static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam)
1310 {
1311 struct v4l2_jpegcompression *parms = arg;
1312
1313 memset(parms, 0, sizeof(*parms));
1314
1315 parms->quality = 80; // TODO: Can this be made meaningful?
1316
1317 parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
1318 if(!cam->params.compression.inhibit_htables) {
1319 parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
1320 }
1321
1322 parms->APPn = cam->APPn;
1323 parms->APP_len = cam->APP_len;
1324 if(cam->APP_len > 0) {
1325 memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
1326 parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
1327 }
1328
1329 parms->COM_len = cam->COM_len;
1330 if(cam->COM_len > 0) {
1331 memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
1332 parms->jpeg_markers |= JPEG_MARKER_COM;
1333 }
1334
1335 DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
1336 parms->APP_len, parms->COM_len);
1337
1338 return 0;
1339 }
1340
1341 /******************************************************************************
1342 *
1343 * ioctl_s_jpegcomp
1344 *
1345 * V4L2 set the JPEG compression parameters
1346 * NOTE: quality and some jpeg_markers are ignored.
1347 *
1348 *****************************************************************************/
1349
1350 static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam)
1351 {
1352 struct v4l2_jpegcompression *parms = arg;
1353
1354 DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
1355 parms->APP_len, parms->COM_len);
1356
1357 cam->params.compression.inhibit_htables =
1358 !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
1359
1360 if(parms->APP_len != 0) {
1361 if(parms->APP_len > 0 &&
1362 parms->APP_len <= sizeof(cam->APP_data) &&
1363 parms->APPn >= 0 && parms->APPn <= 15) {
1364 cam->APPn = parms->APPn;
1365 cam->APP_len = parms->APP_len;
1366 memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
1367 } else {
1368 LOG("Bad APPn Params n=%d len=%d\n",
1369 parms->APPn, parms->APP_len);
1370 return -EINVAL;
1371 }
1372 } else {
1373 cam->APP_len = 0;
1374 }
1375
1376 if(parms->COM_len != 0) {
1377 if(parms->COM_len > 0 &&
1378 parms->COM_len <= sizeof(cam->COM_data)) {
1379 cam->COM_len = parms->COM_len;
1380 memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
1381 } else {
1382 LOG("Bad COM_len=%d\n", parms->COM_len);
1383 return -EINVAL;
1384 }
1385 }
1386
1387 return 0;
1388 }
1389
1390 /******************************************************************************
1391 *
1392 * ioctl_reqbufs
1393 *
1394 * V4L2 Initiate memory mapping.
1395 * NOTE: The user's request is ignored. For now the buffers are fixed.
1396 *
1397 *****************************************************************************/
1398
1399 static int ioctl_reqbufs(void *arg,struct camera_data *cam)
1400 {
1401 struct v4l2_requestbuffers *req = arg;
1402
1403 if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1404 req->memory != V4L2_MEMORY_MMAP)
1405 return -EINVAL;
1406
1407 DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
1408 req->count = cam->num_frames;
1409 memset(&req->reserved, 0, sizeof(req->reserved));
1410
1411 return 0;
1412 }
1413
1414 /******************************************************************************
1415 *
1416 * ioctl_querybuf
1417 *
1418 * V4L2 Query memory buffer status.
1419 *
1420 *****************************************************************************/
1421
1422 static int ioctl_querybuf(void *arg,struct camera_data *cam)
1423 {
1424 struct v4l2_buffer *buf = arg;
1425
1426 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1427 buf->index > cam->num_frames)
1428 return -EINVAL;
1429
1430 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1431 buf->length = cam->frame_size;
1432
1433 buf->memory = V4L2_MEMORY_MMAP;
1434
1435 if(cam->mmapped)
1436 buf->flags = V4L2_BUF_FLAG_MAPPED;
1437 else
1438 buf->flags = 0;
1439
1440 switch (cam->buffers[buf->index].status) {
1441 case FRAME_EMPTY:
1442 case FRAME_ERROR:
1443 case FRAME_READING:
1444 buf->bytesused = 0;
1445 buf->flags = V4L2_BUF_FLAG_QUEUED;
1446 break;
1447 case FRAME_READY:
1448 buf->bytesused = cam->buffers[buf->index].length;
1449 buf->timestamp = cam->buffers[buf->index].timestamp;
1450 buf->sequence = cam->buffers[buf->index].seq;
1451 buf->flags = V4L2_BUF_FLAG_DONE;
1452 break;
1453 }
1454
1455 DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
1456 buf->index, buf->m.offset, buf->flags, buf->sequence,
1457 buf->bytesused);
1458
1459 return 0;
1460 }
1461
1462 /******************************************************************************
1463 *
1464 * ioctl_qbuf
1465 *
1466 * V4L2 User is freeing buffer
1467 *
1468 *****************************************************************************/
1469
1470 static int ioctl_qbuf(void *arg,struct camera_data *cam)
1471 {
1472 struct v4l2_buffer *buf = arg;
1473
1474 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1475 buf->memory != V4L2_MEMORY_MMAP ||
1476 buf->index > cam->num_frames)
1477 return -EINVAL;
1478
1479 DBG("QBUF #%d\n", buf->index);
1480
1481 if(cam->buffers[buf->index].status == FRAME_READY)
1482 cam->buffers[buf->index].status = FRAME_EMPTY;
1483
1484 return 0;
1485 }
1486
1487 /******************************************************************************
1488 *
1489 * find_earliest_filled_buffer
1490 *
1491 * Helper for ioctl_dqbuf. Find the next ready buffer.
1492 *
1493 *****************************************************************************/
1494
1495 static int find_earliest_filled_buffer(struct camera_data *cam)
1496 {
1497 int i;
1498 int found = -1;
1499 for (i=0; i<cam->num_frames; i++) {
1500 if(cam->buffers[i].status == FRAME_READY) {
1501 if(found < 0) {
1502 found = i;
1503 } else {
1504 /* find which buffer is earlier */
1505 struct timeval *tv1, *tv2;
1506 tv1 = &cam->buffers[i].timestamp;
1507 tv2 = &cam->buffers[found].timestamp;
1508 if(tv1->tv_sec < tv2->tv_sec ||
1509 (tv1->tv_sec == tv2->tv_sec &&
1510 tv1->tv_usec < tv2->tv_usec))
1511 found = i;
1512 }
1513 }
1514 }
1515 return found;
1516 }
1517
1518 /******************************************************************************
1519 *
1520 * ioctl_dqbuf
1521 *
1522 * V4L2 User is asking for a filled buffer.
1523 *
1524 *****************************************************************************/
1525
1526 static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
1527 {
1528 struct v4l2_buffer *buf = arg;
1529 int frame;
1530
1531 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1532 buf->memory != V4L2_MEMORY_MMAP)
1533 return -EINVAL;
1534
1535 frame = find_earliest_filled_buffer(cam);
1536
1537 if(frame < 0 && file->f_flags&O_NONBLOCK)
1538 return -EAGAIN;
1539
1540 if(frame < 0) {
1541 /* Wait for a frame to become available */
1542 struct framebuf *cb=cam->curbuff;
1543 mutex_unlock(&cam->busy_lock);
1544 wait_event_interruptible(cam->wq_stream,
1545 !cam->present ||
1546 (cb=cam->curbuff)->status == FRAME_READY);
1547 mutex_lock(&cam->busy_lock);
1548 if (signal_pending(current))
1549 return -ERESTARTSYS;
1550 if(!cam->present)
1551 return -ENOTTY;
1552 frame = cb->num;
1553 }
1554
1555
1556 buf->index = frame;
1557 buf->bytesused = cam->buffers[buf->index].length;
1558 buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
1559 buf->field = V4L2_FIELD_NONE;
1560 buf->timestamp = cam->buffers[buf->index].timestamp;
1561 buf->sequence = cam->buffers[buf->index].seq;
1562 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1563 buf->length = cam->frame_size;
1564 buf->input = 0;
1565 buf->reserved = 0;
1566 memset(&buf->timecode, 0, sizeof(buf->timecode));
1567
1568 DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
1569 cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
1570
1571 return 0;
1572 }
1573
1574 /******************************************************************************
1575 *
1576 * cpia2_ioctl
1577 *
1578 *****************************************************************************/
1579 static int cpia2_do_ioctl(struct inode *inode, struct file *file,
1580 unsigned int ioctl_nr, void *arg)
1581 {
1582 struct video_device *dev = video_devdata(file);
1583 struct camera_data *cam = video_get_drvdata(dev);
1584 int retval = 0;
1585
1586 if (!cam)
1587 return -ENOTTY;
1588
1589 /* make this _really_ smp-safe */
1590 if (mutex_lock_interruptible(&cam->busy_lock))
1591 return -ERESTARTSYS;
1592
1593 if (!cam->present) {
1594 mutex_unlock(&cam->busy_lock);
1595 return -ENODEV;
1596 }
1597
1598 /* Priority check */
1599 switch (ioctl_nr) {
1600 case VIDIOCSWIN:
1601 case VIDIOCMCAPTURE:
1602 case VIDIOC_S_FMT:
1603 {
1604 struct cpia2_fh *fh = file->private_data;
1605 retval = v4l2_prio_check(&cam->prio, &fh->prio);
1606 if(retval) {
1607 mutex_unlock(&cam->busy_lock);
1608 return retval;
1609 }
1610 break;
1611 }
1612 case VIDIOCGMBUF:
1613 case VIDIOCSYNC:
1614 {
1615 struct cpia2_fh *fh = file->private_data;
1616 if(fh->prio != V4L2_PRIORITY_RECORD) {
1617 mutex_unlock(&cam->busy_lock);
1618 return -EBUSY;
1619 }
1620 break;
1621 }
1622 default:
1623 break;
1624 }
1625
1626 switch (ioctl_nr) {
1627 case VIDIOCGCAP: /* query capabilities */
1628 retval = ioctl_cap_query(arg, cam);
1629 break;
1630
1631 case VIDIOCGCHAN: /* get video source - we are a camera, nothing else */
1632 retval = ioctl_get_channel(arg);
1633 break;
1634 case VIDIOCSCHAN: /* set video source - we are a camera, nothing else */
1635 retval = ioctl_set_channel(arg);
1636 break;
1637 case VIDIOCGPICT: /* image properties */
1638 memcpy(arg, &cam->vp, sizeof(struct video_picture));
1639 break;
1640 case VIDIOCSPICT:
1641 retval = ioctl_set_image_prop(arg, cam);
1642 break;
1643 case VIDIOCGWIN: /* get/set capture window */
1644 memcpy(arg, &cam->vw, sizeof(struct video_window));
1645 break;
1646 case VIDIOCSWIN:
1647 retval = ioctl_set_window_size(arg, cam, file->private_data);
1648 break;
1649 case VIDIOCGMBUF: /* mmap interface */
1650 retval = ioctl_get_mbuf(arg, cam);
1651 break;
1652 case VIDIOCMCAPTURE:
1653 retval = ioctl_mcapture(arg, cam, file->private_data);
1654 break;
1655 case VIDIOCSYNC:
1656 retval = ioctl_sync(arg, cam);
1657 break;
1658 /* pointless to implement overlay with this camera */
1659 case VIDIOCCAPTURE:
1660 case VIDIOCGFBUF:
1661 case VIDIOCSFBUF:
1662 case VIDIOCKEY:
1663 retval = -EINVAL;
1664 break;
1665
1666 /* tuner interface - we have none */
1667 case VIDIOCGTUNER:
1668 case VIDIOCSTUNER:
1669 case VIDIOCGFREQ:
1670 case VIDIOCSFREQ:
1671 retval = -EINVAL;
1672 break;
1673
1674 /* audio interface - we have none */
1675 case VIDIOCGAUDIO:
1676 case VIDIOCSAUDIO:
1677 retval = -EINVAL;
1678 break;
1679
1680 /* CPIA2 extension to Video4Linux API */
1681 case CPIA2_IOC_SET_GPIO:
1682 retval = ioctl_set_gpio(arg, cam);
1683 break;
1684 case VIDIOC_QUERYCAP:
1685 retval = ioctl_querycap(arg,cam);
1686 break;
1687
1688 case VIDIOC_ENUMINPUT:
1689 case VIDIOC_G_INPUT:
1690 case VIDIOC_S_INPUT:
1691 retval = ioctl_input(ioctl_nr, arg,cam);
1692 break;
1693
1694 case VIDIOC_ENUM_FMT:
1695 retval = ioctl_enum_fmt(arg,cam);
1696 break;
1697 case VIDIOC_TRY_FMT:
1698 retval = ioctl_try_fmt(arg,cam);
1699 break;
1700 case VIDIOC_G_FMT:
1701 retval = ioctl_get_fmt(arg,cam);
1702 break;
1703 case VIDIOC_S_FMT:
1704 retval = ioctl_set_fmt(arg,cam,file->private_data);
1705 break;
1706
1707 case VIDIOC_CROPCAP:
1708 retval = ioctl_cropcap(arg,cam);
1709 break;
1710 case VIDIOC_G_CROP:
1711 case VIDIOC_S_CROP:
1712 // TODO: I think cropping can be implemented - SJB
1713 retval = -EINVAL;
1714 break;
1715
1716 case VIDIOC_QUERYCTRL:
1717 retval = ioctl_queryctrl(arg,cam);
1718 break;
1719 case VIDIOC_QUERYMENU:
1720 retval = ioctl_querymenu(arg,cam);
1721 break;
1722 case VIDIOC_G_CTRL:
1723 retval = ioctl_g_ctrl(arg,cam);
1724 break;
1725 case VIDIOC_S_CTRL:
1726 retval = ioctl_s_ctrl(arg,cam);
1727 break;
1728
1729 case VIDIOC_G_JPEGCOMP:
1730 retval = ioctl_g_jpegcomp(arg,cam);
1731 break;
1732 case VIDIOC_S_JPEGCOMP:
1733 retval = ioctl_s_jpegcomp(arg,cam);
1734 break;
1735
1736 case VIDIOC_G_PRIORITY:
1737 {
1738 struct cpia2_fh *fh = file->private_data;
1739 *(enum v4l2_priority*)arg = fh->prio;
1740 break;
1741 }
1742 case VIDIOC_S_PRIORITY:
1743 {
1744 struct cpia2_fh *fh = file->private_data;
1745 enum v4l2_priority prio;
1746 prio = *(enum v4l2_priority*)arg;
1747 if(cam->streaming &&
1748 prio != fh->prio &&
1749 fh->prio == V4L2_PRIORITY_RECORD) {
1750 /* Can't drop record priority while streaming */
1751 retval = -EBUSY;
1752 } else if(prio == V4L2_PRIORITY_RECORD &&
1753 prio != fh->prio &&
1754 v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) {
1755 /* Only one program can record at a time */
1756 retval = -EBUSY;
1757 } else {
1758 retval = v4l2_prio_change(&cam->prio, &fh->prio, prio);
1759 }
1760 break;
1761 }
1762
1763 case VIDIOC_REQBUFS:
1764 retval = ioctl_reqbufs(arg,cam);
1765 break;
1766 case VIDIOC_QUERYBUF:
1767 retval = ioctl_querybuf(arg,cam);
1768 break;
1769 case VIDIOC_QBUF:
1770 retval = ioctl_qbuf(arg,cam);
1771 break;
1772 case VIDIOC_DQBUF:
1773 retval = ioctl_dqbuf(arg,cam,file);
1774 break;
1775 case VIDIOC_STREAMON:
1776 {
1777 int type;
1778 DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
1779 type = *(int*)arg;
1780 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1781 retval = -EINVAL;
1782
1783 if(!cam->streaming) {
1784 retval = cpia2_usb_stream_start(cam,
1785 cam->params.camera_state.stream_mode);
1786 } else {
1787 retval = -EINVAL;
1788 }
1789
1790 break;
1791 }
1792 case VIDIOC_STREAMOFF:
1793 {
1794 int type;
1795 DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
1796 type = *(int*)arg;
1797 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1798 retval = -EINVAL;
1799
1800 if(cam->streaming) {
1801 retval = cpia2_usb_stream_stop(cam);
1802 } else {
1803 retval = -EINVAL;
1804 }
1805
1806 break;
1807 }
1808
1809 case VIDIOC_ENUMOUTPUT:
1810 case VIDIOC_G_OUTPUT:
1811 case VIDIOC_S_OUTPUT:
1812 case VIDIOC_G_MODULATOR:
1813 case VIDIOC_S_MODULATOR:
1814
1815 case VIDIOC_ENUMAUDIO:
1816 case VIDIOC_G_AUDIO:
1817 case VIDIOC_S_AUDIO:
1818
1819 case VIDIOC_ENUMAUDOUT:
1820 case VIDIOC_G_AUDOUT:
1821 case VIDIOC_S_AUDOUT:
1822
1823 case VIDIOC_ENUMSTD:
1824 case VIDIOC_QUERYSTD:
1825 case VIDIOC_G_STD:
1826 case VIDIOC_S_STD:
1827
1828 case VIDIOC_G_TUNER:
1829 case VIDIOC_S_TUNER:
1830 case VIDIOC_G_FREQUENCY:
1831 case VIDIOC_S_FREQUENCY:
1832
1833 case VIDIOC_OVERLAY:
1834 case VIDIOC_G_FBUF:
1835 case VIDIOC_S_FBUF:
1836
1837 case VIDIOC_G_PARM:
1838 case VIDIOC_S_PARM:
1839 retval = -EINVAL;
1840 break;
1841 default:
1842 retval = -ENOIOCTLCMD;
1843 break;
1844 }
1845
1846 mutex_unlock(&cam->busy_lock);
1847 return retval;
1848 }
1849
1850 static int cpia2_ioctl(struct inode *inode, struct file *file,
1851 unsigned int ioctl_nr, unsigned long iarg)
1852 {
1853 return video_usercopy(inode, file, ioctl_nr, iarg, cpia2_do_ioctl);
1854 }
1855
1856 /******************************************************************************
1857 *
1858 * cpia2_mmap
1859 *
1860 *****************************************************************************/
1861 static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
1862 {
1863 int retval;
1864 struct video_device *dev = video_devdata(file);
1865 struct camera_data *cam = video_get_drvdata(dev);
1866
1867 /* Priority check */
1868 struct cpia2_fh *fh = file->private_data;
1869 if(fh->prio != V4L2_PRIORITY_RECORD) {
1870 return -EBUSY;
1871 }
1872
1873 retval = cpia2_remap_buffer(cam, area);
1874
1875 if(!retval)
1876 fh->mmapped = 1;
1877 return retval;
1878 }
1879
1880 /******************************************************************************
1881 *
1882 * reset_camera_struct_v4l
1883 *
1884 * Sets all values to the defaults
1885 *****************************************************************************/
1886 static void reset_camera_struct_v4l(struct camera_data *cam)
1887 {
1888 /***
1889 * Fill in the v4l structures. video_cap is filled in inside the VIDIOCCAP
1890 * Ioctl. Here, just do the window and picture stucts.
1891 ***/
1892 cam->vp.palette = (u16) VIDEO_PALETTE_RGB24; /* Is this right? */
1893 cam->vp.brightness = (u16) cam->params.color_params.brightness * 256;
1894 cam->vp.colour = (u16) cam->params.color_params.saturation * 256;
1895 cam->vp.contrast = (u16) cam->params.color_params.contrast * 256;
1896
1897 cam->vw.x = 0;
1898 cam->vw.y = 0;
1899 cam->vw.width = cam->params.roi.width;
1900 cam->vw.height = cam->params.roi.height;
1901 cam->vw.flags = 0;
1902 cam->vw.clipcount = 0;
1903
1904 cam->frame_size = buffer_size;
1905 cam->num_frames = num_buffers;
1906
1907 /* FlickerModes */
1908 cam->params.flicker_control.flicker_mode_req = flicker_mode;
1909 cam->params.flicker_control.mains_frequency = flicker_freq;
1910
1911 /* streamMode */
1912 cam->params.camera_state.stream_mode = alternate;
1913
1914 cam->pixelformat = V4L2_PIX_FMT_JPEG;
1915 v4l2_prio_init(&cam->prio);
1916 return;
1917 }
1918
1919 /***
1920 * The v4l video device structure initialized for this device
1921 ***/
1922 static const struct file_operations fops_template = {
1923 .owner = THIS_MODULE,
1924 .open = cpia2_open,
1925 .release = cpia2_close,
1926 .read = cpia2_v4l_read,
1927 .poll = cpia2_v4l_poll,
1928 .ioctl = cpia2_ioctl,
1929 .llseek = no_llseek,
1930 .compat_ioctl = v4l_compat_ioctl32,
1931 .mmap = cpia2_mmap,
1932 };
1933
1934 static struct video_device cpia2_template = {
1935 /* I could not find any place for the old .initialize initializer?? */
1936 .owner= THIS_MODULE,
1937 .name= "CPiA2 Camera",
1938 .type= VID_TYPE_CAPTURE,
1939 .type2 = V4L2_CAP_VIDEO_CAPTURE |
1940 V4L2_CAP_STREAMING,
1941 .minor= -1,
1942 .fops= &fops_template,
1943 .release= video_device_release,
1944 };
1945
1946 /******************************************************************************
1947 *
1948 * cpia2_register_camera
1949 *
1950 *****************************************************************************/
1951 int cpia2_register_camera(struct camera_data *cam)
1952 {
1953 cam->vdev = video_device_alloc();
1954 if(!cam->vdev)
1955 return -ENOMEM;
1956
1957 memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1958 video_set_drvdata(cam->vdev, cam);
1959
1960 reset_camera_struct_v4l(cam);
1961
1962 /* register v4l device */
1963 if (video_register_device
1964 (cam->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
1965 ERR("video_register_device failed\n");
1966 video_device_release(cam->vdev);
1967 return -ENODEV;
1968 }
1969
1970 return 0;
1971 }
1972
1973 /******************************************************************************
1974 *
1975 * cpia2_unregister_camera
1976 *
1977 *****************************************************************************/
1978 void cpia2_unregister_camera(struct camera_data *cam)
1979 {
1980 if (!cam->open_count) {
1981 video_unregister_device(cam->vdev);
1982 } else {
1983 LOG("/dev/video%d removed while open, "
1984 "deferring video_unregister_device\n",
1985 cam->vdev->minor);
1986 }
1987 }
1988
1989 /******************************************************************************
1990 *
1991 * check_parameters
1992 *
1993 * Make sure that all user-supplied parameters are sensible
1994 *****************************************************************************/
1995 static void __init check_parameters(void)
1996 {
1997 if(buffer_size < PAGE_SIZE) {
1998 buffer_size = PAGE_SIZE;
1999 LOG("buffer_size too small, setting to %d\n", buffer_size);
2000 } else if(buffer_size > 1024*1024) {
2001 /* arbitrary upper limiit */
2002 buffer_size = 1024*1024;
2003 LOG("buffer_size ridiculously large, setting to %d\n",
2004 buffer_size);
2005 } else {
2006 buffer_size += PAGE_SIZE-1;
2007 buffer_size &= ~(PAGE_SIZE-1);
2008 }
2009
2010 if(num_buffers < 1) {
2011 num_buffers = 1;
2012 LOG("num_buffers too small, setting to %d\n", num_buffers);
2013 } else if(num_buffers > VIDEO_MAX_FRAME) {
2014 num_buffers = VIDEO_MAX_FRAME;
2015 LOG("num_buffers too large, setting to %d\n", num_buffers);
2016 }
2017
2018 if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
2019 alternate = DEFAULT_ALT;
2020 LOG("alternate specified is invalid, using %d\n", alternate);
2021 }
2022
2023 if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
2024 flicker_mode = NEVER_FLICKER;
2025 LOG("Flicker mode specified is invalid, using %d\n",
2026 flicker_mode);
2027 }
2028
2029 if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
2030 flicker_freq = FLICKER_60;
2031 LOG("Flicker mode specified is invalid, using %d\n",
2032 flicker_freq);
2033 }
2034
2035 if(video_nr < -1 || video_nr > 64) {
2036 video_nr = -1;
2037 LOG("invalid video_nr specified, must be -1 to 64\n");
2038 }
2039
2040 DBG("Using %d buffers, each %d bytes, alternate=%d\n",
2041 num_buffers, buffer_size, alternate);
2042 }
2043
2044 /************ Module Stuff ***************/
2045
2046
2047 /******************************************************************************
2048 *
2049 * cpia2_init/module_init
2050 *
2051 *****************************************************************************/
2052 static int __init cpia2_init(void)
2053 {
2054 LOG("%s v%d.%d.%d\n",
2055 ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
2056 check_parameters();
2057 cpia2_usb_init();
2058 return 0;
2059 }
2060
2061
2062 /******************************************************************************
2063 *
2064 * cpia2_exit/module_exit
2065 *
2066 *****************************************************************************/
2067 static void __exit cpia2_exit(void)
2068 {
2069 cpia2_usb_cleanup();
2070 schedule_timeout(2 * HZ);
2071 }
2072
2073 module_init(cpia2_init);
2074 module_exit(cpia2_exit);
2075
WRT350N Kernel Patches