projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (9491): rationalise addresses to one common one
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / cpia2 / cpia2_v4l.c
CommitLineData
ab33d507
AC		 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
d9b01449 29 * Alan Cox <alan@lxorguk.ukuu.org.uk>
ab33d507
AC		 30 ****************************************************************************/
31
32#include <linux/version.h>
33
ab33d507
AC		 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>
35ea11ff 40#include <media/v4l2-ioctl.h>
ab33d507
AC		 41
42#include "cpia2.h"
43#include "cpia2dev.h"
44
45
46//#define _CPIA2_DEBUG_
47
48#define MAKE_STRING_1(x) #x
49#define MAKE_STRING(x) MAKE_STRING_1(x)
50
51static int video_nr = -1;
52module_param(video_nr, int, 0);
53MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
54
55static int buffer_size = 68*1024;
56module_param(buffer_size, int, 0);
57MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
58
59static int num_buffers = 3;
60module_param(num_buffers, int, 0);
61MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
62 MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)");
63
64static int alternate = DEFAULT_ALT;
65module_param(alternate, int, 0);
66MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-"
67 MAKE_STRING(USBIF_ISO_6) ", default "
68 MAKE_STRING(DEFAULT_ALT) ")");
69
70static int flicker_freq = 60;
71module_param(flicker_freq, int, 0);
72MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or"
73 MAKE_STRING(60) ", default "
74 MAKE_STRING(60) ")");
75
76static int flicker_mode = NEVER_FLICKER;
77module_param(flicker_mode, int, 0);
78MODULE_PARM_DESC(flicker_mode,
79 "Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or"
80 MAKE_STRING(ANTI_FLICKER_ON) ", default "
81 MAKE_STRING(NEVER_FLICKER) ")");
82
83MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
84MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
85MODULE_SUPPORTED_DEVICE("video");
86MODULE_LICENSE("GPL");
87
88#define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
89
ab33d507
AC		 90struct control_menu_info {
91 int value;
92 char name[32];
93};
94
95static struct control_menu_info framerate_controls[] =
96{
97 { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
98 { CPIA2_VP_FRAMERATE_7_5, "7.5 fps" },
99 { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
100 { CPIA2_VP_FRAMERATE_15, "15 fps" },
101 { CPIA2_VP_FRAMERATE_25, "25 fps" },
102 { CPIA2_VP_FRAMERATE_30, "30 fps" },
103};
0c71bf1c 104#define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
ab33d507
AC		 105
106static struct control_menu_info flicker_controls[] =
107{
108 { NEVER_FLICKER, "Off" },
109 { FLICKER_50, "50 Hz" },
110 { FLICKER_60, "60 Hz" },
111};
0c71bf1c 112#define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
ab33d507
AC		 113
114static struct control_menu_info lights_controls[] =
115{
116 { 0, "Off" },
117 { 64, "Top" },
118 { 128, "Bottom" },
119 { 192, "Both" },
120};
0c71bf1c 121#define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
ab33d507
AC		 122#define GPIO_LIGHTS_MASK 192
123
124static struct v4l2_queryctrl controls[] = {
125 {
126 .id = V4L2_CID_BRIGHTNESS,
127 .type = V4L2_CTRL_TYPE_INTEGER,
128 .name = "Brightness",
129 .minimum = 0,
130 .maximum = 255,
131 .step = 1,
132 .default_value = DEFAULT_BRIGHTNESS,
133 },
134 {
135 .id = V4L2_CID_CONTRAST,
136 .type = V4L2_CTRL_TYPE_INTEGER,
137 .name = "Contrast",
138 .minimum = 0,
139 .maximum = 255,
140 .step = 1,
141 .default_value = DEFAULT_CONTRAST,
142 },
143 {
144 .id = V4L2_CID_SATURATION,
145 .type = V4L2_CTRL_TYPE_INTEGER,
146 .name = "Saturation",
147 .minimum = 0,
148 .maximum = 255,
149 .step = 1,
150 .default_value = DEFAULT_SATURATION,
151 },
152 {
153 .id = V4L2_CID_HFLIP,
154 .type = V4L2_CTRL_TYPE_BOOLEAN,
155 .name = "Mirror Horizontally",
156 .minimum = 0,
157 .maximum = 1,
158 .step = 1,
159 .default_value = 0,
160 },
161 {
162 .id = V4L2_CID_VFLIP,
163 .type = V4L2_CTRL_TYPE_BOOLEAN,
164 .name = "Flip Vertically",
165 .minimum = 0,
166 .maximum = 1,
167 .step = 1,
168 .default_value = 0,
169 },
170 {
171 .id = CPIA2_CID_TARGET_KB,
172 .type = V4L2_CTRL_TYPE_INTEGER,
173 .name = "Target KB",
174 .minimum = 0,
175 .maximum = 255,
176 .step = 1,
177 .default_value = DEFAULT_TARGET_KB,
178 },
179 {
180 .id = CPIA2_CID_GPIO,
181 .type = V4L2_CTRL_TYPE_INTEGER,
182 .name = "GPIO",
183 .minimum = 0,
184 .maximum = 255,
185 .step = 1,
186 .default_value = 0,
187 },
188 {
189 .id = CPIA2_CID_FLICKER_MODE,
190 .type = V4L2_CTRL_TYPE_MENU,
191 .name = "Flicker Reduction",
192 .minimum = 0,
193 .maximum = NUM_FLICKER_CONTROLS-1,
194 .step = 1,
195 .default_value = 0,
196 },
197 {
198 .id = CPIA2_CID_FRAMERATE,
199 .type = V4L2_CTRL_TYPE_MENU,
200 .name = "Framerate",
201 .minimum = 0,
202 .maximum = NUM_FRAMERATE_CONTROLS-1,
203 .step = 1,
204 .default_value = NUM_FRAMERATE_CONTROLS-1,
205 },
206 {
207 .id = CPIA2_CID_USB_ALT,
208 .type = V4L2_CTRL_TYPE_INTEGER,
209 .name = "USB Alternate",
210 .minimum = USBIF_ISO_1,
211 .maximum = USBIF_ISO_6,
212 .step = 1,
213 .default_value = DEFAULT_ALT,
214 },
215 {
216 .id = CPIA2_CID_LIGHTS,
217 .type = V4L2_CTRL_TYPE_MENU,
218 .name = "Lights",
219 .minimum = 0,
220 .maximum = NUM_LIGHTS_CONTROLS-1,
221 .step = 1,
222 .default_value = 0,
223 },
224 {
225 .id = CPIA2_CID_RESET_CAMERA,
226 .type = V4L2_CTRL_TYPE_BUTTON,
227 .name = "Reset Camera",
228 .minimum = 0,
229 .maximum = 0,
230 .step = 0,
231 .default_value = 0,
232 },
233};
0c71bf1c 234#define NUM_CONTROLS (ARRAY_SIZE(controls))
ab33d507
AC		 235
236
237/******************************************************************************
238 *
239 * cpia2_open
240 *
241 *****************************************************************************/
242static int cpia2_open(struct inode *inode, struct file *file)
243{
c170ecf4 244 struct camera_data *cam = video_drvdata(file);
ab33d507
AC		 245 int retval = 0;
246
247 if (!cam) {
248 ERR("Internal error, camera_data not found!\n");
249 return -ENODEV;
250 }
251
2ae15191 252 if(mutex_lock_interruptible(&cam->busy_lock))
ab33d507
AC		 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
278skip_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
295err_return:
2ae15191 296 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 297 return retval;
298}
299
300/******************************************************************************
301 *
302 * cpia2_close
303 *
304 *****************************************************************************/
305static 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
2ae15191 311 mutex_lock(&cam->busy_lock);
ab33d507
AC		 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);
bafefc0c 340 mutex_unlock(&cam->busy_lock);
ab33d507 341 kfree(cam);
bafefc0c 342 return 0;
ab33d507
AC		 343 }
344 }
345
2ae15191 346 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 347
348 return 0;
349}
350
351/******************************************************************************
352 *
353 * cpia2_v4l_read
354 *
355 *****************************************************************************/
356static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
357 loff_t *off)
358{
c170ecf4 359 struct camera_data *cam = video_drvdata(file);
ab33d507
AC		 360 int noblock = file->f_flags&O_NONBLOCK;
361
362 struct cpia2_fh *fh = file->private_data;
363
364 if(!cam)
365 return -EINVAL;
366
367 /* Priority check */
368 if(fh->prio != V4L2_PRIORITY_RECORD) {
369 return -EBUSY;
370 }
371
372 return cpia2_read(cam, buf, count, noblock);
373}
374
375
376/******************************************************************************
377 *
378 * cpia2_v4l_poll
379 *
380 *****************************************************************************/
381static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
382{
c170ecf4 383 struct camera_data *cam = video_drvdata(filp);
ab33d507
AC		 384 struct cpia2_fh *fh = filp->private_data;
385
386 if(!cam)
387 return POLLERR;
388
389 /* Priority check */
390 if(fh->prio != V4L2_PRIORITY_RECORD) {
391 return POLLERR;
392 }
393
394 return cpia2_poll(cam, filp, wait);
395}
396
397
398/******************************************************************************
399 *
400 * ioctl_cap_query
401 *
402 *****************************************************************************/
403static int ioctl_cap_query(void *arg, struct camera_data *cam)
404{
405 struct video_capability *vc;
406 int retval = 0;
407 vc = arg;
408
409 if (cam->params.pnp_id.product == 0x151)
410 strcpy(vc->name, "QX5 Microscope");
411 else
412 strcpy(vc->name, "CPiA2 Camera");
413
414 vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
415 vc->channels = 1;
416 vc->audios = 0;
417 vc->minwidth = 176; /* VIDEOSIZE_QCIF */
418 vc->minheight = 144;
419 switch (cam->params.version.sensor_flags) {
420 case CPIA2_VP_SENSOR_FLAGS_500:
421 vc->maxwidth = STV_IMAGE_VGA_COLS;
422 vc->maxheight = STV_IMAGE_VGA_ROWS;
423 break;
424 case CPIA2_VP_SENSOR_FLAGS_410:
425 vc->maxwidth = STV_IMAGE_CIF_COLS;
426 vc->maxheight = STV_IMAGE_CIF_ROWS;
427 break;
428 default:
429 return -EINVAL;
430 }
431
432 return retval;
433}
434
435/******************************************************************************
436 *
437 * ioctl_get_channel
438 *
439 *****************************************************************************/
440static int ioctl_get_channel(void *arg)
441{
442 int retval = 0;
443 struct video_channel *v;
444 v = arg;
445
446 if (v->channel != 0)
447 return -EINVAL;
448
449 v->channel = 0;
450 strcpy(v->name, "Camera");
451 v->tuners = 0;
452 v->flags = 0;
453 v->type = VIDEO_TYPE_CAMERA;
454 v->norm = 0;
455
456 return retval;
457}
458
459/******************************************************************************
460 *
461 * ioctl_set_channel
462 *
463 *****************************************************************************/
464static int ioctl_set_channel(void *arg)
465{
466 struct video_channel *v;
467 int retval = 0;
468 v = arg;
469
470 if (retval == 0 && v->channel != 0)
471 retval = -EINVAL;
472
473 return retval;
474}
475
476/******************************************************************************
477 *
478 * ioctl_set_image_prop
479 *
480 *****************************************************************************/
481static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
482{
483 struct video_picture *vp;
484 int retval = 0;
485 vp = arg;
486
487 /* brightness, color, contrast need no check 0-65535 */
488 memcpy(&cam->vp, vp, sizeof(*vp));
489
490 /* update cam->params.colorParams */
491 cam->params.color_params.brightness = vp->brightness / 256;
492 cam->params.color_params.saturation = vp->colour / 256;
493 cam->params.color_params.contrast = vp->contrast / 256;
494
495 DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
496 cam->params.color_params.brightness,
497 cam->params.color_params.saturation,
498 cam->params.color_params.contrast);
499
500 cpia2_set_color_params(cam);
501
502 return retval;
503}
504
505static int sync(struct camera_data *cam, int frame_nr)
506{
507 struct framebuf *frame = &cam->buffers[frame_nr];
508
509 while (1) {
510 if (frame->status == FRAME_READY)
511 return 0;
512
513 if (!cam->streaming) {
514 frame->status = FRAME_READY;
515 frame->length = 0;
516 return 0;
517 }
518
2ae15191 519 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 520 wait_event_interruptible(cam->wq_stream,
521 !cam->streaming ||
522 frame->status == FRAME_READY);
2ae15191 523 mutex_lock(&cam->busy_lock);
ab33d507
AC		 524 if (signal_pending(current))
525 return -ERESTARTSYS;
526 if(!cam->present)
527 return -ENOTTY;
528 }
529}
530
531/******************************************************************************
532 *
533 * ioctl_set_window_size
534 *
535 *****************************************************************************/
536static int ioctl_set_window_size(void *arg, struct camera_data *cam,
537 struct cpia2_fh *fh)
538{
539 /* copy_from_user, check validity, copy to internal structure */
540 struct video_window *vw;
541 int frame, err;
542 vw = arg;
543
544 if (vw->clipcount != 0) /* clipping not supported */
545 return -EINVAL;
546
547 if (vw->clips != NULL) /* clipping not supported */
548 return -EINVAL;
549
550 /* Ensure that only this process can change the format. */
551 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
552 if(err != 0)
553 return err;
554
555 cam->pixelformat = V4L2_PIX_FMT_JPEG;
556
557 /* Be sure to supply the Huffman tables, this isn't MJPEG */
558 cam->params.compression.inhibit_htables = 0;
559
560 /* we set the video window to something smaller or equal to what
561 * is requested by the user???
562 */
563 DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
564 if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
565 cam->vw.width = vw->width;
566 cam->vw.height = vw->height;
567 cam->params.roi.width = vw->width;
568 cam->params.roi.height = vw->height;
569 cpia2_set_format(cam);
570 }
571
572 for (frame = 0; frame < cam->num_frames; ++frame) {
573 if (cam->buffers[frame].status == FRAME_READING)
574 if ((err = sync(cam, frame)) < 0)
575 return err;
576
577 cam->buffers[frame].status = FRAME_EMPTY;
578 }
579
580 return 0;
581}
582
583/******************************************************************************
584 *
585 * ioctl_get_mbuf
586 *
587 *****************************************************************************/
588static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
589{
590 struct video_mbuf *vm;
591 int i;
592 vm = arg;
593
594 memset(vm, 0, sizeof(*vm));
595 vm->size = cam->frame_size*cam->num_frames;
596 vm->frames = cam->num_frames;
597 for (i = 0; i < cam->num_frames; i++)
598 vm->offsets[i] = cam->frame_size * i;
599
600 return 0;
601}
602
603/******************************************************************************
604 *
605 * ioctl_mcapture
606 *
607 *****************************************************************************/
608static int ioctl_mcapture(void *arg, struct camera_data *cam,
609 struct cpia2_fh *fh)
610{
611 struct video_mmap *vm;
612 int video_size, err;
613 vm = arg;
614
615 if (vm->frame < 0 || vm->frame >= cam->num_frames)
616 return -EINVAL;
617
618 /* set video size */
619 video_size = cpia2_match_video_size(vm->width, vm->height);
620 if (cam->video_size < 0) {
621 return -EINVAL;
622 }
623
624 /* Ensure that only this process can change the format. */
625 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
626 if(err != 0)
627 return err;
628
629 if (video_size != cam->video_size) {
630 cam->video_size = video_size;
631 cam->params.roi.width = vm->width;
632 cam->params.roi.height = vm->height;
633 cpia2_set_format(cam);
634 }
635
636 if (cam->buffers[vm->frame].status == FRAME_READING)
637 if ((err=sync(cam, vm->frame)) < 0)
638 return err;
639
640 cam->buffers[vm->frame].status = FRAME_EMPTY;
641
642 return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
643}
644
645/******************************************************************************
646 *
647 * ioctl_sync
648 *
649 *****************************************************************************/
650static int ioctl_sync(void *arg, struct camera_data *cam)
651{
652 int frame;
653
654 frame = *(int*)arg;
655
656 if (frame < 0 || frame >= cam->num_frames)
657 return -EINVAL;
658
659 return sync(cam, frame);
660}
661
662
663/******************************************************************************
664 *
665 * ioctl_set_gpio
666 *
667 *****************************************************************************/
668
669static int ioctl_set_gpio(void *arg, struct camera_data *cam)
670{
671 __u32 gpio_val;
672
673 gpio_val = *(__u32*) arg;
674
675 if (gpio_val &~ 0xFFU)
676 return -EINVAL;
677
678 return cpia2_set_gpio(cam, (unsigned char)gpio_val);
679}
680
681/******************************************************************************
682 *
683 * ioctl_querycap
684 *
685 * V4L2 device capabilities
686 *
687 *****************************************************************************/
688
689static int ioctl_querycap(void *arg, struct camera_data *cam)
690{
691 struct v4l2_capability *vc = arg;
692
693 memset(vc, 0, sizeof(*vc));
694 strcpy(vc->driver, "cpia2");
695
696 if (cam->params.pnp_id.product == 0x151)
697 strcpy(vc->card, "QX5 Microscope");
698 else
699 strcpy(vc->card, "CPiA2 Camera");
700 switch (cam->params.pnp_id.device_type) {
701 case DEVICE_STV_672:
702 strcat(vc->card, " (672/");
703 break;
704 case DEVICE_STV_676:
705 strcat(vc->card, " (676/");
706 break;
707 default:
708 strcat(vc->card, " (???/");
709 break;
710 }
711 switch (cam->params.version.sensor_flags) {
712 case CPIA2_VP_SENSOR_FLAGS_404:
713 strcat(vc->card, "404)");
714 break;
715 case CPIA2_VP_SENSOR_FLAGS_407:
716 strcat(vc->card, "407)");
717 break;
718 case CPIA2_VP_SENSOR_FLAGS_409:
719 strcat(vc->card, "409)");
720 break;
721 case CPIA2_VP_SENSOR_FLAGS_410:
722 strcat(vc->card, "410)");
723 break;
724 case CPIA2_VP_SENSOR_FLAGS_500:
725 strcat(vc->card, "500)");
726 break;
727 default:
728 strcat(vc->card, "???)");
729 break;
730 }
731
732 if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
733 memset(vc->bus_info,0, sizeof(vc->bus_info));
734
735 vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
736 CPIA2_PATCH_VER);
737
738 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
739 V4L2_CAP_READWRITE |
740 V4L2_CAP_STREAMING;
741
742 return 0;
743}
744
745/******************************************************************************
746 *
747 * ioctl_input
748 *
749 * V4L2 input get/set/enumerate
750 *
751 *****************************************************************************/
752
753static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
754{
755 struct v4l2_input *i = arg;
756
757 if(ioclt_nr != VIDIOC_G_INPUT) {
758 if (i->index != 0)
759 return -EINVAL;
760 }
761
762 memset(i, 0, sizeof(*i));
763 strcpy(i->name, "Camera");
764 i->type = V4L2_INPUT_TYPE_CAMERA;
765
766 return 0;
767}
768
769/******************************************************************************
770 *
771 * ioctl_enum_fmt
772 *
773 * V4L2 format enumerate
774 *
775 *****************************************************************************/
776
777static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
778{
779 struct v4l2_fmtdesc *f = arg;
780 int index = f->index;
781
782 if (index < 0 || index > 1)
783 return -EINVAL;
784
785 memset(f, 0, sizeof(*f));
786 f->index = index;
787 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
788 f->flags = V4L2_FMT_FLAG_COMPRESSED;
789 switch(index) {
790 case 0:
791 strcpy(f->description, "MJPEG");
792 f->pixelformat = V4L2_PIX_FMT_MJPEG;
793 break;
794 case 1:
795 strcpy(f->description, "JPEG");
796 f->pixelformat = V4L2_PIX_FMT_JPEG;
797 break;
798 default:
799 return -EINVAL;
800 }
801
802 return 0;
803}
804
805/******************************************************************************
806 *
807 * ioctl_try_fmt
808 *
809 * V4L2 format try
810 *
811 *****************************************************************************/
812
813static int ioctl_try_fmt(void *arg,struct camera_data *cam)
814{
815 struct v4l2_format *f = arg;
816
817 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
818 return -EINVAL;
819
820 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
821 f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
822 return -EINVAL;
823
824 f->fmt.pix.field = V4L2_FIELD_NONE;
825 f->fmt.pix.bytesperline = 0;
826 f->fmt.pix.sizeimage = cam->frame_size;
827 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
828 f->fmt.pix.priv = 0;
829
830 switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
831 case VIDEOSIZE_VGA:
832 f->fmt.pix.width = 640;
833 f->fmt.pix.height = 480;
834 break;
835 case VIDEOSIZE_CIF:
836 f->fmt.pix.width = 352;
837 f->fmt.pix.height = 288;
838 break;
839 case VIDEOSIZE_QVGA:
840 f->fmt.pix.width = 320;
841 f->fmt.pix.height = 240;
842 break;
843 case VIDEOSIZE_288_216:
844 f->fmt.pix.width = 288;
845 f->fmt.pix.height = 216;
846 break;
847 case VIDEOSIZE_256_192:
848 f->fmt.pix.width = 256;
849 f->fmt.pix.height = 192;
850 break;
851 case VIDEOSIZE_224_168:
852 f->fmt.pix.width = 224;
853 f->fmt.pix.height = 168;
854 break;
855 case VIDEOSIZE_192_144:
856 f->fmt.pix.width = 192;
857 f->fmt.pix.height = 144;
858 break;
859 case VIDEOSIZE_QCIF:
860 default:
861 f->fmt.pix.width = 176;
862 f->fmt.pix.height = 144;
863 break;
864 }
865
866 return 0;
867}
868
869/******************************************************************************
870 *
871 * ioctl_set_fmt
872 *
873 * V4L2 format set
874 *
875 *****************************************************************************/
876
877static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
878{
879 struct v4l2_format *f = arg;
880 int err, frame;
881
882 err = ioctl_try_fmt(arg, cam);
883 if(err != 0)
884 return err;
885
886 /* Ensure that only this process can change the format. */
887 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
888 if(err != 0) {
889 return err;
890 }
891
892 cam->pixelformat = f->fmt.pix.pixelformat;
893
894 /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
895 * the missing Huffman table properly. */
896 cam->params.compression.inhibit_htables = 0;
897 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
898
899 /* we set the video window to something smaller or equal to what
900 * is requested by the user???
901 */
902 DBG("Requested width = %d, height = %d\n",
903 f->fmt.pix.width, f->fmt.pix.height);
904 if (f->fmt.pix.width != cam->vw.width ||
905 f->fmt.pix.height != cam->vw.height) {
906 cam->vw.width = f->fmt.pix.width;
907 cam->vw.height = f->fmt.pix.height;
908 cam->params.roi.width = f->fmt.pix.width;
909 cam->params.roi.height = f->fmt.pix.height;
910 cpia2_set_format(cam);
911 }
912
913 for (frame = 0; frame < cam->num_frames; ++frame) {
914 if (cam->buffers[frame].status == FRAME_READING)
915 if ((err = sync(cam, frame)) < 0)
916 return err;
917
918 cam->buffers[frame].status = FRAME_EMPTY;
919 }
920
921 return 0;
922}
923
924/******************************************************************************
925 *
926 * ioctl_get_fmt
927 *
928 * V4L2 format get
929 *
930 *****************************************************************************/
931
932static int ioctl_get_fmt(void *arg,struct camera_data *cam)
933{
934 struct v4l2_format *f = arg;
935
936 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
937 return -EINVAL;
938
939 f->fmt.pix.width = cam->vw.width;
940 f->fmt.pix.height = cam->vw.height;
941 f->fmt.pix.pixelformat = cam->pixelformat;
942 f->fmt.pix.field = V4L2_FIELD_NONE;
943 f->fmt.pix.bytesperline = 0;
944 f->fmt.pix.sizeimage = cam->frame_size;
945 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
946 f->fmt.pix.priv = 0;
947
948 return 0;
949}
950
951/******************************************************************************
952 *
953 * ioctl_cropcap
954 *
955 * V4L2 query cropping capabilities
956 * NOTE: cropping is currently disabled
957 *
958 *****************************************************************************/
959
960static int ioctl_cropcap(void *arg,struct camera_data *cam)
961{
962 struct v4l2_cropcap *c = arg;
963
964 if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
965 return -EINVAL;
966
967 c->bounds.left = 0;
968 c->bounds.top = 0;
969 c->bounds.width = cam->vw.width;
970 c->bounds.height = cam->vw.height;
971 c->defrect.left = 0;
972 c->defrect.top = 0;
973 c->defrect.width = cam->vw.width;
974 c->defrect.height = cam->vw.height;
975 c->pixelaspect.numerator = 1;
976 c->pixelaspect.denominator = 1;
977
978 return 0;
979}
980
981/******************************************************************************
982 *
983 * ioctl_queryctrl
984 *
985 * V4L2 query possible control variables
986 *
987 *****************************************************************************/
988
989static int ioctl_queryctrl(void *arg,struct camera_data *cam)
990{
991 struct v4l2_queryctrl *c = arg;
992 int i;
993
994 for(i=0; i<NUM_CONTROLS; ++i) {
995 if(c->id == controls[i].id) {
996 memcpy(c, controls+i, sizeof(*c));
997 break;
998 }
999 }
1000
1001 if(i == NUM_CONTROLS)
1002 return -EINVAL;
1003
1004 /* Some devices have additional limitations */
1005 switch(c->id) {
1006 case V4L2_CID_BRIGHTNESS:
1007 /***
1008 * Don't let the register be set to zero - bug in VP4
1009 * flash of full brightness
1010 ***/
1011 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
1012 c->minimum = 1;
1013 break;
1014 case V4L2_CID_VFLIP:
1015 // VP5 Only
1016 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
1017 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1018 break;
1019 case CPIA2_CID_FRAMERATE:
1020 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1021 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1022 // Maximum 15fps
ab33d507
AC		 1023 for(i=0; i<c->maximum; ++i) {
1024 if(framerate_controls[i].value ==
1025 CPIA2_VP_FRAMERATE_15) {
1026 c->maximum = i;
1027 c->default_value = i;
1028 }
1029 }
1030 }
1031 break;
1032 case CPIA2_CID_FLICKER_MODE:
1033 // Flicker control only valid for 672.
1034 if(cam->params.pnp_id.device_type != DEVICE_STV_672)
1035 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1036 break;
1037 case CPIA2_CID_LIGHTS:
1038 // Light control only valid for the QX5 Microscope.
1039 if(cam->params.pnp_id.product != 0x151)
1040 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1041 break;
1042 default:
1043 break;
1044 }
1045
1046 return 0;
1047}
1048
1049/******************************************************************************
1050 *
1051 * ioctl_querymenu
1052 *
1053 * V4L2 query possible control variables
1054 *
1055 *****************************************************************************/
1056
1057static int ioctl_querymenu(void *arg,struct camera_data *cam)
1058{
1059 struct v4l2_querymenu *m = arg;
1060
1061 memset(m->name, 0, sizeof(m->name));
1062 m->reserved = 0;
1063
1064 switch(m->id) {
1065 case CPIA2_CID_FLICKER_MODE:
1066 if(m->index < 0 || m->index >= NUM_FLICKER_CONTROLS)
1067 return -EINVAL;
1068
1069 strcpy(m->name, flicker_controls[m->index].name);
1070 break;
1071 case CPIA2_CID_FRAMERATE:
1072 {
1073 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1074 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1075 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1076 // Maximum 15fps
1077 int i;
1078 for(i=0; i<maximum; ++i) {
1079 if(framerate_controls[i].value ==
1080 CPIA2_VP_FRAMERATE_15)
1081 maximum = i;
1082 }
1083 }
1084 if(m->index < 0 || m->index > maximum)
1085 return -EINVAL;
1086
1087 strcpy(m->name, framerate_controls[m->index].name);
1088 break;
1089 }
1090 case CPIA2_CID_LIGHTS:
1091 if(m->index < 0 || m->index >= NUM_LIGHTS_CONTROLS)
1092 return -EINVAL;
1093
1094 strcpy(m->name, lights_controls[m->index].name);
1095 break;
1096 default:
1097 return -EINVAL;
1098 }
1099
1100 return 0;
1101}
1102
1103/******************************************************************************
1104 *
1105 * ioctl_g_ctrl
1106 *
1107 * V4L2 get the value of a control variable
1108 *
1109 *****************************************************************************/
1110
1111static int ioctl_g_ctrl(void *arg,struct camera_data *cam)
1112{
1113 struct v4l2_control *c = arg;
1114
1115 switch(c->id) {
1116 case V4L2_CID_BRIGHTNESS:
1117 cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
1118 TRANSFER_READ, 0);
1119 c->value = cam->params.color_params.brightness;
1120 break;
1121 case V4L2_CID_CONTRAST:
1122 cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
1123 TRANSFER_READ, 0);
1124 c->value = cam->params.color_params.contrast;
1125 break;
1126 case V4L2_CID_SATURATION:
1127 cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
1128 TRANSFER_READ, 0);
1129 c->value = cam->params.color_params.saturation;
1130 break;
1131 case V4L2_CID_HFLIP:
1132 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1133 TRANSFER_READ, 0);
1134 c->value = (cam->params.vp_params.user_effects &
1135 CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
1136 break;
1137 case V4L2_CID_VFLIP:
1138 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1139 TRANSFER_READ, 0);
1140 c->value = (cam->params.vp_params.user_effects &
1141 CPIA2_VP_USER_EFFECTS_FLIP) != 0;
1142 break;
1143 case CPIA2_CID_TARGET_KB:
1144 c->value = cam->params.vc_params.target_kb;
1145 break;
1146 case CPIA2_CID_GPIO:
1147 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1148 TRANSFER_READ, 0);
1149 c->value = cam->params.vp_params.gpio_data;
1150 break;
1151 case CPIA2_CID_FLICKER_MODE:
1152 {
1153 int i, mode;
1154 cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
1155 TRANSFER_READ, 0);
1156 if(cam->params.flicker_control.cam_register &
1157 CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
1158 mode = NEVER_FLICKER;
1159 } else {
1160 if(cam->params.flicker_control.cam_register &
1161 CPIA2_VP_FLICKER_MODES_50HZ) {
657de3cd 1162 mode = FLICKER_50;
ab33d507 1163 } else {
657de3cd 1164 mode = FLICKER_60;
ab33d507
AC		 1165 }
1166 }
1167 for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
1168 if(flicker_controls[i].value == mode) {
1169 c->value = i;
1170 break;
1171 }
1172 }
1173 if(i == NUM_FLICKER_CONTROLS)
1174 return -EINVAL;
1175 break;
1176 }
1177 case CPIA2_CID_FRAMERATE:
1178 {
1179 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1180 int i;
1181 for(i=0; i<= maximum; i++) {
1182 if(cam->params.vp_params.frame_rate ==
1183 framerate_controls[i].value)
1184 break;
1185 }
1186 if(i > maximum)
1187 return -EINVAL;
1188 c->value = i;
1189 break;
1190 }
1191 case CPIA2_CID_USB_ALT:
1192 c->value = cam->params.camera_state.stream_mode;
1193 break;
1194 case CPIA2_CID_LIGHTS:
1195 {
1196 int i;
1197 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1198 TRANSFER_READ, 0);
1199 for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
1200 if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
1201 lights_controls[i].value) {
1202 break;
1203 }
1204 }
1205 if(i == NUM_LIGHTS_CONTROLS)
1206 return -EINVAL;
1207 c->value = i;
1208 break;
1209 }
1210 case CPIA2_CID_RESET_CAMERA:
1211 return -EINVAL;
1212 default:
1213 return -EINVAL;
1214 }
1215
1216 DBG("Get control id:%d, value:%d\n", c->id, c->value);
1217
1218 return 0;
1219}
1220
1221/******************************************************************************
1222 *
1223 * ioctl_s_ctrl
1224 *
1225 * V4L2 set the value of a control variable
1226 *
1227 *****************************************************************************/
1228
1229static int ioctl_s_ctrl(void *arg,struct camera_data *cam)
1230{
1231 struct v4l2_control *c = arg;
1232 int i;
1233 int retval = 0;
1234
1235 DBG("Set control id:%d, value:%d\n", c->id, c->value);
1236
1237 /* Check that the value is in range */
1238 for(i=0; i<NUM_CONTROLS; i++) {
1239 if(c->id == controls[i].id) {
1240 if(c->value < controls[i].minimum ||
1241 c->value > controls[i].maximum) {
1242 return -EINVAL;
1243 }
1244 break;
1245 }
1246 }
1247 if(i == NUM_CONTROLS)
1248 return -EINVAL;
1249
1250 switch(c->id) {
1251 case V4L2_CID_BRIGHTNESS:
1252 cpia2_set_brightness(cam, c->value);
1253 break;
1254 case V4L2_CID_CONTRAST:
1255 cpia2_set_contrast(cam, c->value);
1256 break;
1257 case V4L2_CID_SATURATION:
1258 cpia2_set_saturation(cam, c->value);
1259 break;
1260 case V4L2_CID_HFLIP:
1261 cpia2_set_property_mirror(cam, c->value);
1262 break;
1263 case V4L2_CID_VFLIP:
1264 cpia2_set_property_flip(cam, c->value);
1265 break;
1266 case CPIA2_CID_TARGET_KB:
1267 retval = cpia2_set_target_kb(cam, c->value);
1268 break;
1269 case CPIA2_CID_GPIO:
1270 retval = cpia2_set_gpio(cam, c->value);
1271 break;
1272 case CPIA2_CID_FLICKER_MODE:
1273 retval = cpia2_set_flicker_mode(cam,
1274 flicker_controls[c->value].value);
1275 break;
1276 case CPIA2_CID_FRAMERATE:
1277 retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
1278 break;
1279 case CPIA2_CID_USB_ALT:
1280 retval = cpia2_usb_change_streaming_alternate(cam, c->value);
1281 break;
1282 case CPIA2_CID_LIGHTS:
1283 retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
1284 break;
1285 case CPIA2_CID_RESET_CAMERA:
1286 cpia2_usb_stream_pause(cam);
1287 cpia2_reset_camera(cam);
1288 cpia2_usb_stream_resume(cam);
1289 break;
1290 default:
1291 retval = -EINVAL;
1292 }
1293
1294 return retval;
1295}
1296
1297/******************************************************************************
1298 *
1299 * ioctl_g_jpegcomp
1300 *
1301 * V4L2 get the JPEG compression parameters
1302 *
1303 *****************************************************************************/
1304
1305static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam)
1306{
1307 struct v4l2_jpegcompression *parms = arg;
1308
1309 memset(parms, 0, sizeof(*parms));
1310
1311 parms->quality = 80; // TODO: Can this be made meaningful?
1312
1313 parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
1314 if(!cam->params.compression.inhibit_htables) {
1315 parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
1316 }
1317
1318 parms->APPn = cam->APPn;
1319 parms->APP_len = cam->APP_len;
1320 if(cam->APP_len > 0) {
1321 memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
1322 parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
1323 }
1324
1325 parms->COM_len = cam->COM_len;
1326 if(cam->COM_len > 0) {
1327 memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
1328 parms->jpeg_markers |= JPEG_MARKER_COM;
1329 }
1330
1331 DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
1332 parms->APP_len, parms->COM_len);
1333
1334 return 0;
1335}
1336
1337/******************************************************************************
1338 *
1339 * ioctl_s_jpegcomp
1340 *
1341 * V4L2 set the JPEG compression parameters
1342 * NOTE: quality and some jpeg_markers are ignored.
1343 *
1344 *****************************************************************************/
1345
1346static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam)
1347{
1348 struct v4l2_jpegcompression *parms = arg;
1349
1350 DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
1351 parms->APP_len, parms->COM_len);
1352
1353 cam->params.compression.inhibit_htables =
1354 !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
1355
1356 if(parms->APP_len != 0) {
1357 if(parms->APP_len > 0 &&
1358 parms->APP_len <= sizeof(cam->APP_data) &&
1359 parms->APPn >= 0 && parms->APPn <= 15) {
1360 cam->APPn = parms->APPn;
1361 cam->APP_len = parms->APP_len;
1362 memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
1363 } else {
1364 LOG("Bad APPn Params n=%d len=%d\n",
1365 parms->APPn, parms->APP_len);
1366 return -EINVAL;
1367 }
1368 } else {
1369 cam->APP_len = 0;
1370 }
1371
1372 if(parms->COM_len != 0) {
1373 if(parms->COM_len > 0 &&
1374 parms->COM_len <= sizeof(cam->COM_data)) {
1375 cam->COM_len = parms->COM_len;
1376 memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
1377 } else {
1378 LOG("Bad COM_len=%d\n", parms->COM_len);
1379 return -EINVAL;
1380 }
1381 }
1382
1383 return 0;
1384}
1385
1386/******************************************************************************
1387 *
1388 * ioctl_reqbufs
1389 *
1390 * V4L2 Initiate memory mapping.
1391 * NOTE: The user's request is ignored. For now the buffers are fixed.
1392 *
1393 *****************************************************************************/
1394
1395static int ioctl_reqbufs(void *arg,struct camera_data *cam)
1396{
1397 struct v4l2_requestbuffers *req = arg;
1398
1399 if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1400 req->memory != V4L2_MEMORY_MMAP)
1401 return -EINVAL;
1402
1403 DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
1404 req->count = cam->num_frames;
1405 memset(&req->reserved, 0, sizeof(req->reserved));
1406
1407 return 0;
1408}
1409
1410/******************************************************************************
1411 *
1412 * ioctl_querybuf
1413 *
1414 * V4L2 Query memory buffer status.
1415 *
1416 *****************************************************************************/
1417
1418static int ioctl_querybuf(void *arg,struct camera_data *cam)
1419{
1420 struct v4l2_buffer *buf = arg;
1421
1422 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1423 buf->index > cam->num_frames)
1424 return -EINVAL;
1425
1426 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1427 buf->length = cam->frame_size;
1428
1429 buf->memory = V4L2_MEMORY_MMAP;
1430
1431 if(cam->mmapped)
1432 buf->flags = V4L2_BUF_FLAG_MAPPED;
1433 else
1434 buf->flags = 0;
1435
1436 switch (cam->buffers[buf->index].status) {
1437 case FRAME_EMPTY:
1438 case FRAME_ERROR:
1439 case FRAME_READING:
1440 buf->bytesused = 0;
1441 buf->flags = V4L2_BUF_FLAG_QUEUED;
1442 break;
1443 case FRAME_READY:
1444 buf->bytesused = cam->buffers[buf->index].length;
1445 buf->timestamp = cam->buffers[buf->index].timestamp;
1446 buf->sequence = cam->buffers[buf->index].seq;
1447 buf->flags = V4L2_BUF_FLAG_DONE;
1448 break;
1449 }
1450
1451 DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
1452 buf->index, buf->m.offset, buf->flags, buf->sequence,
1453 buf->bytesused);
1454
1455 return 0;
1456}
1457
1458/******************************************************************************
1459 *
1460 * ioctl_qbuf
1461 *
1462 * V4L2 User is freeing buffer
1463 *
1464 *****************************************************************************/
1465
1466static int ioctl_qbuf(void *arg,struct camera_data *cam)
1467{
1468 struct v4l2_buffer *buf = arg;
1469
1470 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1471 buf->memory != V4L2_MEMORY_MMAP ||
1472 buf->index > cam->num_frames)
1473 return -EINVAL;
1474
1475 DBG("QBUF #%d\n", buf->index);
1476
1477 if(cam->buffers[buf->index].status == FRAME_READY)
1478 cam->buffers[buf->index].status = FRAME_EMPTY;
1479
1480 return 0;
1481}
1482
1483/******************************************************************************
1484 *
1485 * find_earliest_filled_buffer
1486 *
1487 * Helper for ioctl_dqbuf. Find the next ready buffer.
1488 *
1489 *****************************************************************************/
1490
1491static int find_earliest_filled_buffer(struct camera_data *cam)
1492{
1493 int i;
1494 int found = -1;
1495 for (i=0; i<cam->num_frames; i++) {
1496 if(cam->buffers[i].status == FRAME_READY) {
1497 if(found < 0) {
1498 found = i;
1499 } else {
1500 /* find which buffer is earlier */
1501 struct timeval *tv1, *tv2;
1502 tv1 = &cam->buffers[i].timestamp;
1503 tv2 = &cam->buffers[found].timestamp;
1504 if(tv1->tv_sec < tv2->tv_sec ||
1505 (tv1->tv_sec == tv2->tv_sec &&
1506 tv1->tv_usec < tv2->tv_usec))
1507 found = i;
1508 }
1509 }
1510 }
1511 return found;
1512}
1513
1514/******************************************************************************
1515 *
1516 * ioctl_dqbuf
1517 *
1518 * V4L2 User is asking for a filled buffer.
1519 *
1520 *****************************************************************************/
1521
1522static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
1523{
1524 struct v4l2_buffer *buf = arg;
1525 int frame;
1526
1527 if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1528 buf->memory != V4L2_MEMORY_MMAP)
1529 return -EINVAL;
1530
1531 frame = find_earliest_filled_buffer(cam);
1532
1533 if(frame < 0 && file->f_flags&O_NONBLOCK)
1534 return -EAGAIN;
1535
1536 if(frame < 0) {
1537 /* Wait for a frame to become available */
1538 struct framebuf *cb=cam->curbuff;
2ae15191 1539 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 1540 wait_event_interruptible(cam->wq_stream,
1541 !cam->present ||
1542 (cb=cam->curbuff)->status == FRAME_READY);
2ae15191 1543 mutex_lock(&cam->busy_lock);
ab33d507
AC		 1544 if (signal_pending(current))
1545 return -ERESTARTSYS;
1546 if(!cam->present)
1547 return -ENOTTY;
1548 frame = cb->num;
1549 }
1550
1551
1552 buf->index = frame;
1553 buf->bytesused = cam->buffers[buf->index].length;
1554 buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
1555 buf->field = V4L2_FIELD_NONE;
1556 buf->timestamp = cam->buffers[buf->index].timestamp;
1557 buf->sequence = cam->buffers[buf->index].seq;
1558 buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1559 buf->length = cam->frame_size;
1560 buf->input = 0;
1561 buf->reserved = 0;
1562 memset(&buf->timecode, 0, sizeof(buf->timecode));
1563
1564 DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
1565 cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
1566
1567 return 0;
1568}
1569
1570/******************************************************************************
1571 *
1572 * cpia2_ioctl
1573 *
1574 *****************************************************************************/
1575static int cpia2_do_ioctl(struct inode *inode, struct file *file,
1576 unsigned int ioctl_nr, void *arg)
1577{
c170ecf4 1578 struct camera_data *cam = video_drvdata(file);
ab33d507
AC		 1579 int retval = 0;
1580
1581 if (!cam)
1582 return -ENOTTY;
1583
1584 /* make this _really_ smp-safe */
2ae15191 1585 if (mutex_lock_interruptible(&cam->busy_lock))
ab33d507
AC		 1586 return -ERESTARTSYS;
1587
1588 if (!cam->present) {
2ae15191 1589 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 1590 return -ENODEV;
1591 }
1592
1593 /* Priority check */
1594 switch (ioctl_nr) {
1595 case VIDIOCSWIN:
1596 case VIDIOCMCAPTURE:
1597 case VIDIOC_S_FMT:
1598 {
1599 struct cpia2_fh *fh = file->private_data;
1600 retval = v4l2_prio_check(&cam->prio, &fh->prio);
1601 if(retval) {
2ae15191 1602 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 1603 return retval;
1604 }
1605 break;
1606 }
1607 case VIDIOCGMBUF:
1608 case VIDIOCSYNC:
1609 {
1610 struct cpia2_fh *fh = file->private_data;
1611 if(fh->prio != V4L2_PRIORITY_RECORD) {
2ae15191 1612 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 1613 return -EBUSY;
1614 }
1615 break;
1616 }
1617 default:
1618 break;
1619 }
1620
1621 switch (ioctl_nr) {
be787ace 1622 case VIDIOCGCAP: /* query capabilities */
ab33d507
AC		 1623 retval = ioctl_cap_query(arg, cam);
1624 break;
1625
1626 case VIDIOCGCHAN: /* get video source - we are a camera, nothing else */
1627 retval = ioctl_get_channel(arg);
1628 break;
1629 case VIDIOCSCHAN: /* set video source - we are a camera, nothing else */
1630 retval = ioctl_set_channel(arg);
1631 break;
1632 case VIDIOCGPICT: /* image properties */
1633 memcpy(arg, &cam->vp, sizeof(struct video_picture));
1634 break;
1635 case VIDIOCSPICT:
1636 retval = ioctl_set_image_prop(arg, cam);
1637 break;
1638 case VIDIOCGWIN: /* get/set capture window */
1639 memcpy(arg, &cam->vw, sizeof(struct video_window));
1640 break;
1641 case VIDIOCSWIN:
1642 retval = ioctl_set_window_size(arg, cam, file->private_data);
1643 break;
1644 case VIDIOCGMBUF: /* mmap interface */
1645 retval = ioctl_get_mbuf(arg, cam);
1646 break;
1647 case VIDIOCMCAPTURE:
1648 retval = ioctl_mcapture(arg, cam, file->private_data);
1649 break;
1650 case VIDIOCSYNC:
1651 retval = ioctl_sync(arg, cam);
1652 break;
1653 /* pointless to implement overlay with this camera */
1654 case VIDIOCCAPTURE:
1655 case VIDIOCGFBUF:
1656 case VIDIOCSFBUF:
1657 case VIDIOCKEY:
1658 retval = -EINVAL;
1659 break;
1660
1661 /* tuner interface - we have none */
1662 case VIDIOCGTUNER:
1663 case VIDIOCSTUNER:
1664 case VIDIOCGFREQ:
1665 case VIDIOCSFREQ:
1666 retval = -EINVAL;
1667 break;
1668
1669 /* audio interface - we have none */
1670 case VIDIOCGAUDIO:
1671 case VIDIOCSAUDIO:
1672 retval = -EINVAL;
1673 break;
1674
1675 /* CPIA2 extension to Video4Linux API */
1676 case CPIA2_IOC_SET_GPIO:
1677 retval = ioctl_set_gpio(arg, cam);
1678 break;
1679 case VIDIOC_QUERYCAP:
1680 retval = ioctl_querycap(arg,cam);
1681 break;
1682
1683 case VIDIOC_ENUMINPUT:
1684 case VIDIOC_G_INPUT:
1685 case VIDIOC_S_INPUT:
1686 retval = ioctl_input(ioctl_nr, arg,cam);
1687 break;
1688
1689 case VIDIOC_ENUM_FMT:
1690 retval = ioctl_enum_fmt(arg,cam);
1691 break;
1692 case VIDIOC_TRY_FMT:
1693 retval = ioctl_try_fmt(arg,cam);
1694 break;
1695 case VIDIOC_G_FMT:
1696 retval = ioctl_get_fmt(arg,cam);
1697 break;
1698 case VIDIOC_S_FMT:
1699 retval = ioctl_set_fmt(arg,cam,file->private_data);
1700 break;
1701
1702 case VIDIOC_CROPCAP:
1703 retval = ioctl_cropcap(arg,cam);
1704 break;
1705 case VIDIOC_G_CROP:
1706 case VIDIOC_S_CROP:
1707 // TODO: I think cropping can be implemented - SJB
1708 retval = -EINVAL;
1709 break;
1710
1711 case VIDIOC_QUERYCTRL:
1712 retval = ioctl_queryctrl(arg,cam);
1713 break;
1714 case VIDIOC_QUERYMENU:
1715 retval = ioctl_querymenu(arg,cam);
1716 break;
1717 case VIDIOC_G_CTRL:
1718 retval = ioctl_g_ctrl(arg,cam);
1719 break;
1720 case VIDIOC_S_CTRL:
1721 retval = ioctl_s_ctrl(arg,cam);
1722 break;
1723
1724 case VIDIOC_G_JPEGCOMP:
1725 retval = ioctl_g_jpegcomp(arg,cam);
1726 break;
1727 case VIDIOC_S_JPEGCOMP:
1728 retval = ioctl_s_jpegcomp(arg,cam);
1729 break;
1730
1731 case VIDIOC_G_PRIORITY:
1732 {
1733 struct cpia2_fh *fh = file->private_data;
1734 *(enum v4l2_priority*)arg = fh->prio;
1735 break;
1736 }
1737 case VIDIOC_S_PRIORITY:
1738 {
1739 struct cpia2_fh *fh = file->private_data;
1740 enum v4l2_priority prio;
1741 prio = *(enum v4l2_priority*)arg;
1742 if(cam->streaming &&
1743 prio != fh->prio &&
1744 fh->prio == V4L2_PRIORITY_RECORD) {
1745 /* Can't drop record priority while streaming */
1746 retval = -EBUSY;
1747 } else if(prio == V4L2_PRIORITY_RECORD &&
1748 prio != fh->prio &&
1749 v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) {
1750 /* Only one program can record at a time */
1751 retval = -EBUSY;
1752 } else {
1753 retval = v4l2_prio_change(&cam->prio, &fh->prio, prio);
1754 }
1755 break;
1756 }
1757
1758 case VIDIOC_REQBUFS:
1759 retval = ioctl_reqbufs(arg,cam);
1760 break;
1761 case VIDIOC_QUERYBUF:
1762 retval = ioctl_querybuf(arg,cam);
1763 break;
1764 case VIDIOC_QBUF:
1765 retval = ioctl_qbuf(arg,cam);
1766 break;
1767 case VIDIOC_DQBUF:
1768 retval = ioctl_dqbuf(arg,cam,file);
1769 break;
1770 case VIDIOC_STREAMON:
1771 {
1772 int type;
1773 DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
1774 type = *(int*)arg;
1775 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1776 retval = -EINVAL;
1777
1778 if(!cam->streaming) {
1779 retval = cpia2_usb_stream_start(cam,
1780 cam->params.camera_state.stream_mode);
1781 } else {
1782 retval = -EINVAL;
1783 }
1784
1785 break;
1786 }
1787 case VIDIOC_STREAMOFF:
1788 {
1789 int type;
1790 DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
1791 type = *(int*)arg;
1792 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1793 retval = -EINVAL;
1794
1795 if(cam->streaming) {
1796 retval = cpia2_usb_stream_stop(cam);
1797 } else {
1798 retval = -EINVAL;
1799 }
1800
1801 break;
1802 }
1803
1804 case VIDIOC_ENUMOUTPUT:
1805 case VIDIOC_G_OUTPUT:
1806 case VIDIOC_S_OUTPUT:
1807 case VIDIOC_G_MODULATOR:
1808 case VIDIOC_S_MODULATOR:
1809
1810 case VIDIOC_ENUMAUDIO:
1811 case VIDIOC_G_AUDIO:
1812 case VIDIOC_S_AUDIO:
1813
1814 case VIDIOC_ENUMAUDOUT:
1815 case VIDIOC_G_AUDOUT:
1816 case VIDIOC_S_AUDOUT:
1817
1818 case VIDIOC_ENUMSTD:
1819 case VIDIOC_QUERYSTD:
1820 case VIDIOC_G_STD:
1821 case VIDIOC_S_STD:
1822
1823 case VIDIOC_G_TUNER:
1824 case VIDIOC_S_TUNER:
1825 case VIDIOC_G_FREQUENCY:
1826 case VIDIOC_S_FREQUENCY:
1827
1828 case VIDIOC_OVERLAY:
1829 case VIDIOC_G_FBUF:
1830 case VIDIOC_S_FBUF:
1831
1832 case VIDIOC_G_PARM:
1833 case VIDIOC_S_PARM:
1834 retval = -EINVAL;
1835 break;
1836 default:
1837 retval = -ENOIOCTLCMD;
1838 break;
1839 }
1840
2ae15191 1841 mutex_unlock(&cam->busy_lock);
ab33d507
AC		 1842 return retval;
1843}
1844
1845static int cpia2_ioctl(struct inode *inode, struct file *file,
1846 unsigned int ioctl_nr, unsigned long iarg)
1847{
1848 return video_usercopy(inode, file, ioctl_nr, iarg, cpia2_do_ioctl);
1849}
1850
1851/******************************************************************************
1852 *
1853 * cpia2_mmap
1854 *
1855 *****************************************************************************/
1856static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
1857{
c170ecf4 1858 struct camera_data *cam = video_drvdata(file);
ab33d507 1859 int retval;
ab33d507
AC		 1860
1861 /* Priority check */
1862 struct cpia2_fh *fh = file->private_data;
1863 if(fh->prio != V4L2_PRIORITY_RECORD) {
1864 return -EBUSY;
1865 }
1866
1867 retval = cpia2_remap_buffer(cam, area);
1868
1869 if(!retval)
1870 fh->mmapped = 1;
1871 return retval;
1872}
1873
1874/******************************************************************************
1875 *
1876 * reset_camera_struct_v4l
1877 *
1878 * Sets all values to the defaults
1879 *****************************************************************************/
1880static void reset_camera_struct_v4l(struct camera_data *cam)
1881{
1882 /***
1883 * Fill in the v4l structures. video_cap is filled in inside the VIDIOCCAP
1884 * Ioctl. Here, just do the window and picture stucts.
1885 ***/
1886 cam->vp.palette = (u16) VIDEO_PALETTE_RGB24; /* Is this right? */
1887 cam->vp.brightness = (u16) cam->params.color_params.brightness * 256;
1888 cam->vp.colour = (u16) cam->params.color_params.saturation * 256;
1889 cam->vp.contrast = (u16) cam->params.color_params.contrast * 256;
1890
1891 cam->vw.x = 0;
1892 cam->vw.y = 0;
1893 cam->vw.width = cam->params.roi.width;
1894 cam->vw.height = cam->params.roi.height;
1895 cam->vw.flags = 0;
1896 cam->vw.clipcount = 0;
1897
1898 cam->frame_size = buffer_size;
1899 cam->num_frames = num_buffers;
1900
1901 /* FlickerModes */
1902 cam->params.flicker_control.flicker_mode_req = flicker_mode;
1903 cam->params.flicker_control.mains_frequency = flicker_freq;
1904
1905 /* streamMode */
1906 cam->params.camera_state.stream_mode = alternate;
1907
1908 cam->pixelformat = V4L2_PIX_FMT_JPEG;
1909 v4l2_prio_init(&cam->prio);
1910 return;
1911}
1912
1913/***
1914 * The v4l video device structure initialized for this device
1915 ***/
fa027c2a 1916static const struct file_operations fops_template = {
2ae15191
AC		 1917 .owner = THIS_MODULE,
1918 .open = cpia2_open,
1919 .release = cpia2_close,
1920 .read = cpia2_v4l_read,
1921 .poll = cpia2_v4l_poll,
1922 .ioctl = cpia2_ioctl,
1923 .llseek = no_llseek,
078ff795 1924#ifdef CONFIG_COMPAT
2ae15191 1925 .compat_ioctl = v4l_compat_ioctl32,
078ff795 1926#endif
2ae15191 1927 .mmap = cpia2_mmap,
ab33d507
AC		 1928};
1929
1930static struct video_device cpia2_template = {
1931 /* I could not find any place for the old .initialize initializer?? */
ab33d507 1932 .name= "CPiA2 Camera",
ab33d507
AC		 1933 .minor= -1,
1934 .fops= &fops_template,
1935 .release= video_device_release,
1936};
1937
1938/******************************************************************************
1939 *
1940 * cpia2_register_camera
1941 *
1942 *****************************************************************************/
1943int cpia2_register_camera(struct camera_data *cam)
1944{
1945 cam->vdev = video_device_alloc();
1946 if(!cam->vdev)
1947 return -ENOMEM;
1948
1949 memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1950 video_set_drvdata(cam->vdev, cam);
1951
1952 reset_camera_struct_v4l(cam);
1953
1954 /* register v4l device */
dc60de33 1955 if (video_register_device(cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
ab33d507
AC		 1956 ERR("video_register_device failed\n");
1957 video_device_release(cam->vdev);
1958 return -ENODEV;
1959 }
1960
1961 return 0;
1962}
1963
1964/******************************************************************************
1965 *
1966 * cpia2_unregister_camera
1967 *
1968 *****************************************************************************/
1969void cpia2_unregister_camera(struct camera_data *cam)
1970{
1971 if (!cam->open_count) {
1972 video_unregister_device(cam->vdev);
1973 } else {
1974 LOG("/dev/video%d removed while open, "
1975 "deferring video_unregister_device\n",
c6330fb8 1976 cam->vdev->num);
ab33d507
AC		 1977 }
1978}
1979
1980/******************************************************************************
1981 *
1982 * check_parameters
1983 *
1984 * Make sure that all user-supplied parameters are sensible
1985 *****************************************************************************/
1986static void __init check_parameters(void)
1987{
1988 if(buffer_size < PAGE_SIZE) {
1989 buffer_size = PAGE_SIZE;
1990 LOG("buffer_size too small, setting to %d\n", buffer_size);
1991 } else if(buffer_size > 1024*1024) {
1992 /* arbitrary upper limiit */
1993 buffer_size = 1024*1024;
1994 LOG("buffer_size ridiculously large, setting to %d\n",
1995 buffer_size);
1996 } else {
1997 buffer_size += PAGE_SIZE-1;
1998 buffer_size &= ~(PAGE_SIZE-1);
1999 }
2000
2001 if(num_buffers < 1) {
2002 num_buffers = 1;
2003 LOG("num_buffers too small, setting to %d\n", num_buffers);
2004 } else if(num_buffers > VIDEO_MAX_FRAME) {
2005 num_buffers = VIDEO_MAX_FRAME;
2006 LOG("num_buffers too large, setting to %d\n", num_buffers);
2007 }
2008
2009 if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
2010 alternate = DEFAULT_ALT;
2011 LOG("alternate specified is invalid, using %d\n", alternate);
2012 }
2013
2014 if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
2015 flicker_mode = NEVER_FLICKER;
2016 LOG("Flicker mode specified is invalid, using %d\n",
2017 flicker_mode);
2018 }
2019
2020 if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
2021 flicker_freq = FLICKER_60;
2022 LOG("Flicker mode specified is invalid, using %d\n",
2023 flicker_freq);
2024 }
2025
2026 if(video_nr < -1 || video_nr > 64) {
2027 video_nr = -1;
2028 LOG("invalid video_nr specified, must be -1 to 64\n");
2029 }
2030
2031 DBG("Using %d buffers, each %d bytes, alternate=%d\n",
2032 num_buffers, buffer_size, alternate);
2033}
2034
2035/************ Module Stuff ***************/
2036
2037
2038/******************************************************************************
2039 *
2040 * cpia2_init/module_init
2041 *
2042 *****************************************************************************/
8cbe84f3 2043static int __init cpia2_init(void)
ab33d507
AC		 2044{
2045 LOG("%s v%d.%d.%d\n",
2046 ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
2047 check_parameters();
2048 cpia2_usb_init();
2049 return 0;
2050}
2051
2052
2053/******************************************************************************
2054 *
2055 * cpia2_exit/module_exit
2056 *
2057 *****************************************************************************/
8cbe84f3 2058static void __exit cpia2_exit(void)
ab33d507
AC		 2059{
2060 cpia2_usb_cleanup();
2061 schedule_timeout(2 * HZ);
2062}
2063
ab33d507
AC		 2064module_init(cpia2_init);
2065module_exit(cpia2_exit);
2066
kernel source for telekom puls (alcatel/mediatek)