blob: eb9f15cd4c45c9884170fb9599e99f6544e4e288 [file] [log] [blame]
Alan Coxab33d502006-02-27 00:09:05 -03001/****************************************************************************
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
Alan Coxab33d502006-02-27 00:09:05 -030034
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>
Hans Verkuil35ea11f2008-07-20 08:12:02 -030040#include <media/v4l2-ioctl.h>
Alan Coxab33d502006-02-27 00:09:05 -030041
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
Alan Coxab33d502006-02-27 00:09:05 -030090struct 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};
Robert P. J. Day0c71bf12007-06-05 05:20:56 -0300104#define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
Alan Coxab33d502006-02-27 00:09:05 -0300105
106static struct control_menu_info flicker_controls[] =
107{
108 { NEVER_FLICKER, "Off" },
109 { FLICKER_50, "50 Hz" },
110 { FLICKER_60, "60 Hz" },
111};
Robert P. J. Day0c71bf12007-06-05 05:20:56 -0300112#define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
Alan Coxab33d502006-02-27 00:09:05 -0300113
114static struct control_menu_info lights_controls[] =
115{
116 { 0, "Off" },
117 { 64, "Top" },
118 { 128, "Bottom" },
119 { 192, "Both" },
120};
Robert P. J. Day0c71bf12007-06-05 05:20:56 -0300121#define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
Alan Coxab33d502006-02-27 00:09:05 -0300122#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};
Robert P. J. Day0c71bf12007-06-05 05:20:56 -0300234#define NUM_CONTROLS (ARRAY_SIZE(controls))
Alan Coxab33d502006-02-27 00:09:05 -0300235
236
237/******************************************************************************
238 *
239 * cpia2_open
240 *
241 *****************************************************************************/
242static int cpia2_open(struct inode *inode, struct file *file)
243{
244 struct video_device *dev = video_devdata(file);
245 struct camera_data *cam = video_get_drvdata(dev);
246 int retval = 0;
247
248 if (!cam) {
249 ERR("Internal error, camera_data not found!\n");
250 return -ENODEV;
251 }
252
Alan Cox2ae15192006-03-20 13:59:42 -0300253 if(mutex_lock_interruptible(&cam->busy_lock))
Alan Coxab33d502006-02-27 00:09:05 -0300254 return -ERESTARTSYS;
255
256 if(!cam->present) {
257 retval = -ENODEV;
258 goto err_return;
259 }
260
261 if (cam->open_count > 0) {
262 goto skip_init;
263 }
264
265 if (cpia2_allocate_buffers(cam)) {
266 retval = -ENOMEM;
267 goto err_return;
268 }
269
270 /* reset the camera */
271 if (cpia2_reset_camera(cam) < 0) {
272 retval = -EIO;
273 goto err_return;
274 }
275
276 cam->APP_len = 0;
277 cam->COM_len = 0;
278
279skip_init:
280 {
281 struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL);
282 if(!fh) {
283 retval = -ENOMEM;
284 goto err_return;
285 }
286 file->private_data = fh;
287 fh->prio = V4L2_PRIORITY_UNSET;
288 v4l2_prio_open(&cam->prio, &fh->prio);
289 fh->mmapped = 0;
290 }
291
292 ++cam->open_count;
293
294 cpia2_dbg_dump_registers(cam);
295
296err_return:
Alan Cox2ae15192006-03-20 13:59:42 -0300297 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300298 return retval;
299}
300
301/******************************************************************************
302 *
303 * cpia2_close
304 *
305 *****************************************************************************/
306static int cpia2_close(struct inode *inode, struct file *file)
307{
308 struct video_device *dev = video_devdata(file);
309 struct camera_data *cam = video_get_drvdata(dev);
310 struct cpia2_fh *fh = file->private_data;
311
Alan Cox2ae15192006-03-20 13:59:42 -0300312 mutex_lock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300313
314 if (cam->present &&
315 (cam->open_count == 1
316 || fh->prio == V4L2_PRIORITY_RECORD
317 )) {
318 cpia2_usb_stream_stop(cam);
319
320 if(cam->open_count == 1) {
321 /* save camera state for later open */
322 cpia2_save_camera_state(cam);
323
324 cpia2_set_low_power(cam);
325 cpia2_free_buffers(cam);
326 }
327 }
328
329 {
330 if(fh->mmapped)
331 cam->mmapped = 0;
332 v4l2_prio_close(&cam->prio,&fh->prio);
333 file->private_data = NULL;
334 kfree(fh);
335 }
336
337 if (--cam->open_count == 0) {
338 cpia2_free_buffers(cam);
339 if (!cam->present) {
340 video_unregister_device(dev);
Jesper Juhlbafefc02006-06-23 13:27:36 -0300341 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300342 kfree(cam);
Jesper Juhlbafefc02006-06-23 13:27:36 -0300343 return 0;
Alan Coxab33d502006-02-27 00:09:05 -0300344 }
345 }
346
Alan Cox2ae15192006-03-20 13:59:42 -0300347 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300348
349 return 0;
350}
351
352/******************************************************************************
353 *
354 * cpia2_v4l_read
355 *
356 *****************************************************************************/
357static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
358 loff_t *off)
359{
360 struct video_device *dev = video_devdata(file);
361 struct camera_data *cam = video_get_drvdata(dev);
362 int noblock = file->f_flags&O_NONBLOCK;
363
364 struct cpia2_fh *fh = file->private_data;
365
366 if(!cam)
367 return -EINVAL;
368
369 /* Priority check */
370 if(fh->prio != V4L2_PRIORITY_RECORD) {
371 return -EBUSY;
372 }
373
374 return cpia2_read(cam, buf, count, noblock);
375}
376
377
378/******************************************************************************
379 *
380 * cpia2_v4l_poll
381 *
382 *****************************************************************************/
383static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
384{
385 struct video_device *dev = video_devdata(filp);
386 struct camera_data *cam = video_get_drvdata(dev);
387
388 struct cpia2_fh *fh = filp->private_data;
389
390 if(!cam)
391 return POLLERR;
392
393 /* Priority check */
394 if(fh->prio != V4L2_PRIORITY_RECORD) {
395 return POLLERR;
396 }
397
398 return cpia2_poll(cam, filp, wait);
399}
400
401
402/******************************************************************************
403 *
404 * ioctl_cap_query
405 *
406 *****************************************************************************/
407static int ioctl_cap_query(void *arg, struct camera_data *cam)
408{
409 struct video_capability *vc;
410 int retval = 0;
411 vc = arg;
412
413 if (cam->params.pnp_id.product == 0x151)
414 strcpy(vc->name, "QX5 Microscope");
415 else
416 strcpy(vc->name, "CPiA2 Camera");
417
418 vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
419 vc->channels = 1;
420 vc->audios = 0;
421 vc->minwidth = 176; /* VIDEOSIZE_QCIF */
422 vc->minheight = 144;
423 switch (cam->params.version.sensor_flags) {
424 case CPIA2_VP_SENSOR_FLAGS_500:
425 vc->maxwidth = STV_IMAGE_VGA_COLS;
426 vc->maxheight = STV_IMAGE_VGA_ROWS;
427 break;
428 case CPIA2_VP_SENSOR_FLAGS_410:
429 vc->maxwidth = STV_IMAGE_CIF_COLS;
430 vc->maxheight = STV_IMAGE_CIF_ROWS;
431 break;
432 default:
433 return -EINVAL;
434 }
435
436 return retval;
437}
438
439/******************************************************************************
440 *
441 * ioctl_get_channel
442 *
443 *****************************************************************************/
444static int ioctl_get_channel(void *arg)
445{
446 int retval = 0;
447 struct video_channel *v;
448 v = arg;
449
450 if (v->channel != 0)
451 return -EINVAL;
452
453 v->channel = 0;
454 strcpy(v->name, "Camera");
455 v->tuners = 0;
456 v->flags = 0;
457 v->type = VIDEO_TYPE_CAMERA;
458 v->norm = 0;
459
460 return retval;
461}
462
463/******************************************************************************
464 *
465 * ioctl_set_channel
466 *
467 *****************************************************************************/
468static int ioctl_set_channel(void *arg)
469{
470 struct video_channel *v;
471 int retval = 0;
472 v = arg;
473
474 if (retval == 0 && v->channel != 0)
475 retval = -EINVAL;
476
477 return retval;
478}
479
480/******************************************************************************
481 *
482 * ioctl_set_image_prop
483 *
484 *****************************************************************************/
485static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
486{
487 struct video_picture *vp;
488 int retval = 0;
489 vp = arg;
490
491 /* brightness, color, contrast need no check 0-65535 */
492 memcpy(&cam->vp, vp, sizeof(*vp));
493
494 /* update cam->params.colorParams */
495 cam->params.color_params.brightness = vp->brightness / 256;
496 cam->params.color_params.saturation = vp->colour / 256;
497 cam->params.color_params.contrast = vp->contrast / 256;
498
499 DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
500 cam->params.color_params.brightness,
501 cam->params.color_params.saturation,
502 cam->params.color_params.contrast);
503
504 cpia2_set_color_params(cam);
505
506 return retval;
507}
508
509static int sync(struct camera_data *cam, int frame_nr)
510{
511 struct framebuf *frame = &cam->buffers[frame_nr];
512
513 while (1) {
514 if (frame->status == FRAME_READY)
515 return 0;
516
517 if (!cam->streaming) {
518 frame->status = FRAME_READY;
519 frame->length = 0;
520 return 0;
521 }
522
Alan Cox2ae15192006-03-20 13:59:42 -0300523 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300524 wait_event_interruptible(cam->wq_stream,
525 !cam->streaming ||
526 frame->status == FRAME_READY);
Alan Cox2ae15192006-03-20 13:59:42 -0300527 mutex_lock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -0300528 if (signal_pending(current))
529 return -ERESTARTSYS;
530 if(!cam->present)
531 return -ENOTTY;
532 }
533}
534
535/******************************************************************************
536 *
537 * ioctl_set_window_size
538 *
539 *****************************************************************************/
540static int ioctl_set_window_size(void *arg, struct camera_data *cam,
541 struct cpia2_fh *fh)
542{
543 /* copy_from_user, check validity, copy to internal structure */
544 struct video_window *vw;
545 int frame, err;
546 vw = arg;
547
548 if (vw->clipcount != 0) /* clipping not supported */
549 return -EINVAL;
550
551 if (vw->clips != NULL) /* clipping not supported */
552 return -EINVAL;
553
554 /* Ensure that only this process can change the format. */
555 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
556 if(err != 0)
557 return err;
558
559 cam->pixelformat = V4L2_PIX_FMT_JPEG;
560
561 /* Be sure to supply the Huffman tables, this isn't MJPEG */
562 cam->params.compression.inhibit_htables = 0;
563
564 /* we set the video window to something smaller or equal to what
565 * is requested by the user???
566 */
567 DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
568 if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
569 cam->vw.width = vw->width;
570 cam->vw.height = vw->height;
571 cam->params.roi.width = vw->width;
572 cam->params.roi.height = vw->height;
573 cpia2_set_format(cam);
574 }
575
576 for (frame = 0; frame < cam->num_frames; ++frame) {
577 if (cam->buffers[frame].status == FRAME_READING)
578 if ((err = sync(cam, frame)) < 0)
579 return err;
580
581 cam->buffers[frame].status = FRAME_EMPTY;
582 }
583
584 return 0;
585}
586
587/******************************************************************************
588 *
589 * ioctl_get_mbuf
590 *
591 *****************************************************************************/
592static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
593{
594 struct video_mbuf *vm;
595 int i;
596 vm = arg;
597
598 memset(vm, 0, sizeof(*vm));
599 vm->size = cam->frame_size*cam->num_frames;
600 vm->frames = cam->num_frames;
601 for (i = 0; i < cam->num_frames; i++)
602 vm->offsets[i] = cam->frame_size * i;
603
604 return 0;
605}
606
607/******************************************************************************
608 *
609 * ioctl_mcapture
610 *
611 *****************************************************************************/
612static int ioctl_mcapture(void *arg, struct camera_data *cam,
613 struct cpia2_fh *fh)
614{
615 struct video_mmap *vm;
616 int video_size, err;
617 vm = arg;
618
619 if (vm->frame < 0 || vm->frame >= cam->num_frames)
620 return -EINVAL;
621
622 /* set video size */
623 video_size = cpia2_match_video_size(vm->width, vm->height);
624 if (cam->video_size < 0) {
625 return -EINVAL;
626 }
627
628 /* Ensure that only this process can change the format. */
629 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
630 if(err != 0)
631 return err;
632
633 if (video_size != cam->video_size) {
634 cam->video_size = video_size;
635 cam->params.roi.width = vm->width;
636 cam->params.roi.height = vm->height;
637 cpia2_set_format(cam);
638 }
639
640 if (cam->buffers[vm->frame].status == FRAME_READING)
641 if ((err=sync(cam, vm->frame)) < 0)
642 return err;
643
644 cam->buffers[vm->frame].status = FRAME_EMPTY;
645
646 return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
647}
648
649/******************************************************************************
650 *
651 * ioctl_sync
652 *
653 *****************************************************************************/
654static int ioctl_sync(void *arg, struct camera_data *cam)
655{
656 int frame;
657
658 frame = *(int*)arg;
659
660 if (frame < 0 || frame >= cam->num_frames)
661 return -EINVAL;
662
663 return sync(cam, frame);
664}
665
666
667/******************************************************************************
668 *
669 * ioctl_set_gpio
670 *
671 *****************************************************************************/
672
673static int ioctl_set_gpio(void *arg, struct camera_data *cam)
674{
675 __u32 gpio_val;
676
677 gpio_val = *(__u32*) arg;
678
679 if (gpio_val &~ 0xFFU)
680 return -EINVAL;
681
682 return cpia2_set_gpio(cam, (unsigned char)gpio_val);
683}
684
685/******************************************************************************
686 *
687 * ioctl_querycap
688 *
689 * V4L2 device capabilities
690 *
691 *****************************************************************************/
692
693static int ioctl_querycap(void *arg, struct camera_data *cam)
694{
695 struct v4l2_capability *vc = arg;
696
697 memset(vc, 0, sizeof(*vc));
698 strcpy(vc->driver, "cpia2");
699
700 if (cam->params.pnp_id.product == 0x151)
701 strcpy(vc->card, "QX5 Microscope");
702 else
703 strcpy(vc->card, "CPiA2 Camera");
704 switch (cam->params.pnp_id.device_type) {
705 case DEVICE_STV_672:
706 strcat(vc->card, " (672/");
707 break;
708 case DEVICE_STV_676:
709 strcat(vc->card, " (676/");
710 break;
711 default:
712 strcat(vc->card, " (???/");
713 break;
714 }
715 switch (cam->params.version.sensor_flags) {
716 case CPIA2_VP_SENSOR_FLAGS_404:
717 strcat(vc->card, "404)");
718 break;
719 case CPIA2_VP_SENSOR_FLAGS_407:
720 strcat(vc->card, "407)");
721 break;
722 case CPIA2_VP_SENSOR_FLAGS_409:
723 strcat(vc->card, "409)");
724 break;
725 case CPIA2_VP_SENSOR_FLAGS_410:
726 strcat(vc->card, "410)");
727 break;
728 case CPIA2_VP_SENSOR_FLAGS_500:
729 strcat(vc->card, "500)");
730 break;
731 default:
732 strcat(vc->card, "???)");
733 break;
734 }
735
736 if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
737 memset(vc->bus_info,0, sizeof(vc->bus_info));
738
739 vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
740 CPIA2_PATCH_VER);
741
742 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
743 V4L2_CAP_READWRITE |
744 V4L2_CAP_STREAMING;
745
746 return 0;
747}
748
749/******************************************************************************
750 *
751 * ioctl_input
752 *
753 * V4L2 input get/set/enumerate
754 *
755 *****************************************************************************/
756
757static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
758{
759 struct v4l2_input *i = arg;
760
761 if(ioclt_nr != VIDIOC_G_INPUT) {
762 if (i->index != 0)
763 return -EINVAL;
764 }
765
766 memset(i, 0, sizeof(*i));
767 strcpy(i->name, "Camera");
768 i->type = V4L2_INPUT_TYPE_CAMERA;
769
770 return 0;
771}
772
773/******************************************************************************
774 *
775 * ioctl_enum_fmt
776 *
777 * V4L2 format enumerate
778 *
779 *****************************************************************************/
780
781static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
782{
783 struct v4l2_fmtdesc *f = arg;
784 int index = f->index;
785
786 if (index < 0 || index > 1)
787 return -EINVAL;
788
789 memset(f, 0, sizeof(*f));
790 f->index = index;
791 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
792 f->flags = V4L2_FMT_FLAG_COMPRESSED;
793 switch(index) {
794 case 0:
795 strcpy(f->description, "MJPEG");
796 f->pixelformat = V4L2_PIX_FMT_MJPEG;
797 break;
798 case 1:
799 strcpy(f->description, "JPEG");
800 f->pixelformat = V4L2_PIX_FMT_JPEG;
801 break;
802 default:
803 return -EINVAL;
804 }
805
806 return 0;
807}
808
809/******************************************************************************
810 *
811 * ioctl_try_fmt
812 *
813 * V4L2 format try
814 *
815 *****************************************************************************/
816
817static int ioctl_try_fmt(void *arg,struct camera_data *cam)
818{
819 struct v4l2_format *f = arg;
820
821 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
822 return -EINVAL;
823
824 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
825 f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
826 return -EINVAL;
827
828 f->fmt.pix.field = V4L2_FIELD_NONE;
829 f->fmt.pix.bytesperline = 0;
830 f->fmt.pix.sizeimage = cam->frame_size;
831 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
832 f->fmt.pix.priv = 0;
833
834 switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
835 case VIDEOSIZE_VGA:
836 f->fmt.pix.width = 640;
837 f->fmt.pix.height = 480;
838 break;
839 case VIDEOSIZE_CIF:
840 f->fmt.pix.width = 352;
841 f->fmt.pix.height = 288;
842 break;
843 case VIDEOSIZE_QVGA:
844 f->fmt.pix.width = 320;
845 f->fmt.pix.height = 240;
846 break;
847 case VIDEOSIZE_288_216:
848 f->fmt.pix.width = 288;
849 f->fmt.pix.height = 216;
850 break;
851 case VIDEOSIZE_256_192:
852 f->fmt.pix.width = 256;
853 f->fmt.pix.height = 192;
854 break;
855 case VIDEOSIZE_224_168:
856 f->fmt.pix.width = 224;
857 f->fmt.pix.height = 168;
858 break;
859 case VIDEOSIZE_192_144:
860 f->fmt.pix.width = 192;
861 f->fmt.pix.height = 144;
862 break;
863 case VIDEOSIZE_QCIF:
864 default:
865 f->fmt.pix.width = 176;
866 f->fmt.pix.height = 144;
867 break;
868 }
869
870 return 0;
871}
872
873/******************************************************************************
874 *
875 * ioctl_set_fmt
876 *
877 * V4L2 format set
878 *
879 *****************************************************************************/
880
881static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
882{
883 struct v4l2_format *f = arg;
884 int err, frame;
885
886 err = ioctl_try_fmt(arg, cam);
887 if(err != 0)
888 return err;
889
890 /* Ensure that only this process can change the format. */
891 err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
892 if(err != 0) {
893 return err;
894 }
895
896 cam->pixelformat = f->fmt.pix.pixelformat;
897
898 /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
899 * the missing Huffman table properly. */
900 cam->params.compression.inhibit_htables = 0;
901 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
902
903 /* we set the video window to something smaller or equal to what
904 * is requested by the user???
905 */
906 DBG("Requested width = %d, height = %d\n",
907 f->fmt.pix.width, f->fmt.pix.height);
908 if (f->fmt.pix.width != cam->vw.width ||
909 f->fmt.pix.height != cam->vw.height) {
910 cam->vw.width = f->fmt.pix.width;
911 cam->vw.height = f->fmt.pix.height;
912 cam->params.roi.width = f->fmt.pix.width;
913 cam->params.roi.height = f->fmt.pix.height;
914 cpia2_set_format(cam);
915 }
916
917 for (frame = 0; frame < cam->num_frames; ++frame) {
918 if (cam->buffers[frame].status == FRAME_READING)
919 if ((err = sync(cam, frame)) < 0)
920 return err;
921
922 cam->buffers[frame].status = FRAME_EMPTY;
923 }
924
925 return 0;
926}
927
928/******************************************************************************
929 *
930 * ioctl_get_fmt
931 *
932 * V4L2 format get
933 *
934 *****************************************************************************/
935
936static int ioctl_get_fmt(void *arg,struct camera_data *cam)
937{
938 struct v4l2_format *f = arg;
939
940 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
941 return -EINVAL;
942
943 f->fmt.pix.width = cam->vw.width;
944 f->fmt.pix.height = cam->vw.height;
945 f->fmt.pix.pixelformat = cam->pixelformat;
946 f->fmt.pix.field = V4L2_FIELD_NONE;
947 f->fmt.pix.bytesperline = 0;
948 f->fmt.pix.sizeimage = cam->frame_size;
949 f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
950 f->fmt.pix.priv = 0;
951
952 return 0;
953}
954
955/******************************************************************************
956 *
957 * ioctl_cropcap
958 *
959 * V4L2 query cropping capabilities
960 * NOTE: cropping is currently disabled
961 *
962 *****************************************************************************/
963
964static int ioctl_cropcap(void *arg,struct camera_data *cam)
965{
966 struct v4l2_cropcap *c = arg;
967
968 if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
969 return -EINVAL;
970
971 c->bounds.left = 0;
972 c->bounds.top = 0;
973 c->bounds.width = cam->vw.width;
974 c->bounds.height = cam->vw.height;
975 c->defrect.left = 0;
976 c->defrect.top = 0;
977 c->defrect.width = cam->vw.width;
978 c->defrect.height = cam->vw.height;
979 c->pixelaspect.numerator = 1;
980 c->pixelaspect.denominator = 1;
981
982 return 0;
983}
984
985/******************************************************************************
986 *
987 * ioctl_queryctrl
988 *
989 * V4L2 query possible control variables
990 *
991 *****************************************************************************/
992
993static int ioctl_queryctrl(void *arg,struct camera_data *cam)
994{
995 struct v4l2_queryctrl *c = arg;
996 int i;
997
998 for(i=0; i<NUM_CONTROLS; ++i) {
999 if(c->id == controls[i].id) {
1000 memcpy(c, controls+i, sizeof(*c));
1001 break;
1002 }
1003 }
1004
1005 if(i == NUM_CONTROLS)
1006 return -EINVAL;
1007
1008 /* Some devices have additional limitations */
1009 switch(c->id) {
1010 case V4L2_CID_BRIGHTNESS:
1011 /***
1012 * Don't let the register be set to zero - bug in VP4
1013 * flash of full brightness
1014 ***/
1015 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
1016 c->minimum = 1;
1017 break;
1018 case V4L2_CID_VFLIP:
1019 // VP5 Only
1020 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
1021 c->flags |= V4L2_CTRL_FLAG_DISABLED;
1022 break;
1023 case CPIA2_CID_FRAMERATE:
1024 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1025 cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1026 // Maximum 15fps
Alan Coxab33d502006-02-27 00:09:05 -03001027 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
1061static 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
1115static 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) {
Trent Piepho657de3c2006-06-20 00:30:57 -03001166 mode = FLICKER_50;
Alan Coxab33d502006-02-27 00:09:05 -03001167 } else {
Trent Piepho657de3c2006-06-20 00:30:57 -03001168 mode = FLICKER_60;
Alan Coxab33d502006-02-27 00:09:05 -03001169 }
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
1233static 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
1309static 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
1350static 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
1399static 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
1422static 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
1470static 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
1495static 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
1526static 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;
Alan Cox2ae15192006-03-20 13:59:42 -03001543 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001544 wait_event_interruptible(cam->wq_stream,
1545 !cam->present ||
1546 (cb=cam->curbuff)->status == FRAME_READY);
Alan Cox2ae15192006-03-20 13:59:42 -03001547 mutex_lock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001548 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 *****************************************************************************/
1579static 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 */
Alan Cox2ae15192006-03-20 13:59:42 -03001590 if (mutex_lock_interruptible(&cam->busy_lock))
Alan Coxab33d502006-02-27 00:09:05 -03001591 return -ERESTARTSYS;
1592
1593 if (!cam->present) {
Alan Cox2ae15192006-03-20 13:59:42 -03001594 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001595 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) {
Alan Cox2ae15192006-03-20 13:59:42 -03001607 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001608 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) {
Alan Cox2ae15192006-03-20 13:59:42 -03001617 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001618 return -EBUSY;
1619 }
1620 break;
1621 }
1622 default:
1623 break;
1624 }
1625
1626 switch (ioctl_nr) {
Alexey Dobriyanbe787ac2006-03-07 22:20:23 -03001627 case VIDIOCGCAP: /* query capabilities */
Alan Coxab33d502006-02-27 00:09:05 -03001628 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
Alan Cox2ae15192006-03-20 13:59:42 -03001846 mutex_unlock(&cam->busy_lock);
Alan Coxab33d502006-02-27 00:09:05 -03001847 return retval;
1848}
1849
1850static 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 *****************************************************************************/
1861static 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 *****************************************************************************/
1886static 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 ***/
Arjan van de Venfa027c22007-02-12 00:55:33 -08001922static const struct file_operations fops_template = {
Alan Cox2ae15192006-03-20 13:59:42 -03001923 .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,
Douglas Schilling Landgraf078ff792008-04-22 14:46:11 -03001930#ifdef CONFIG_COMPAT
Alan Cox2ae15192006-03-20 13:59:42 -03001931 .compat_ioctl = v4l_compat_ioctl32,
Douglas Schilling Landgraf078ff792008-04-22 14:46:11 -03001932#endif
Alan Cox2ae15192006-03-20 13:59:42 -03001933 .mmap = cpia2_mmap,
Alan Coxab33d502006-02-27 00:09:05 -03001934};
1935
1936static struct video_device cpia2_template = {
1937 /* I could not find any place for the old .initialize initializer?? */
Alan Coxab33d502006-02-27 00:09:05 -03001938 .name= "CPiA2 Camera",
Alan Coxab33d502006-02-27 00:09:05 -03001939 .minor= -1,
1940 .fops= &fops_template,
1941 .release= video_device_release,
1942};
1943
1944/******************************************************************************
1945 *
1946 * cpia2_register_camera
1947 *
1948 *****************************************************************************/
1949int cpia2_register_camera(struct camera_data *cam)
1950{
1951 cam->vdev = video_device_alloc();
1952 if(!cam->vdev)
1953 return -ENOMEM;
1954
1955 memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1956 video_set_drvdata(cam->vdev, cam);
1957
1958 reset_camera_struct_v4l(cam);
1959
1960 /* register v4l device */
Hans Verkuildc60de32008-09-03 17:11:58 -03001961 if (video_register_device(cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
Alan Coxab33d502006-02-27 00:09:05 -03001962 ERR("video_register_device failed\n");
1963 video_device_release(cam->vdev);
1964 return -ENODEV;
1965 }
1966
1967 return 0;
1968}
1969
1970/******************************************************************************
1971 *
1972 * cpia2_unregister_camera
1973 *
1974 *****************************************************************************/
1975void cpia2_unregister_camera(struct camera_data *cam)
1976{
1977 if (!cam->open_count) {
1978 video_unregister_device(cam->vdev);
1979 } else {
1980 LOG("/dev/video%d removed while open, "
1981 "deferring video_unregister_device\n",
1982 cam->vdev->minor);
1983 }
1984}
1985
1986/******************************************************************************
1987 *
1988 * check_parameters
1989 *
1990 * Make sure that all user-supplied parameters are sensible
1991 *****************************************************************************/
1992static void __init check_parameters(void)
1993{
1994 if(buffer_size < PAGE_SIZE) {
1995 buffer_size = PAGE_SIZE;
1996 LOG("buffer_size too small, setting to %d\n", buffer_size);
1997 } else if(buffer_size > 1024*1024) {
1998 /* arbitrary upper limiit */
1999 buffer_size = 1024*1024;
2000 LOG("buffer_size ridiculously large, setting to %d\n",
2001 buffer_size);
2002 } else {
2003 buffer_size += PAGE_SIZE-1;
2004 buffer_size &= ~(PAGE_SIZE-1);
2005 }
2006
2007 if(num_buffers < 1) {
2008 num_buffers = 1;
2009 LOG("num_buffers too small, setting to %d\n", num_buffers);
2010 } else if(num_buffers > VIDEO_MAX_FRAME) {
2011 num_buffers = VIDEO_MAX_FRAME;
2012 LOG("num_buffers too large, setting to %d\n", num_buffers);
2013 }
2014
2015 if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
2016 alternate = DEFAULT_ALT;
2017 LOG("alternate specified is invalid, using %d\n", alternate);
2018 }
2019
2020 if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
2021 flicker_mode = NEVER_FLICKER;
2022 LOG("Flicker mode specified is invalid, using %d\n",
2023 flicker_mode);
2024 }
2025
2026 if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
2027 flicker_freq = FLICKER_60;
2028 LOG("Flicker mode specified is invalid, using %d\n",
2029 flicker_freq);
2030 }
2031
2032 if(video_nr < -1 || video_nr > 64) {
2033 video_nr = -1;
2034 LOG("invalid video_nr specified, must be -1 to 64\n");
2035 }
2036
2037 DBG("Using %d buffers, each %d bytes, alternate=%d\n",
2038 num_buffers, buffer_size, alternate);
2039}
2040
2041/************ Module Stuff ***************/
2042
2043
2044/******************************************************************************
2045 *
2046 * cpia2_init/module_init
2047 *
2048 *****************************************************************************/
Adrian Bunk8cbe84f2006-02-28 04:40:51 -03002049static int __init cpia2_init(void)
Alan Coxab33d502006-02-27 00:09:05 -03002050{
2051 LOG("%s v%d.%d.%d\n",
2052 ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
2053 check_parameters();
2054 cpia2_usb_init();
2055 return 0;
2056}
2057
2058
2059/******************************************************************************
2060 *
2061 * cpia2_exit/module_exit
2062 *
2063 *****************************************************************************/
Adrian Bunk8cbe84f2006-02-28 04:40:51 -03002064static void __exit cpia2_exit(void)
Alan Coxab33d502006-02-27 00:09:05 -03002065{
2066 cpia2_usb_cleanup();
2067 schedule_timeout(2 * HZ);
2068}
2069
Alan Coxab33d502006-02-27 00:09:05 -03002070module_init(cpia2_init);
2071module_exit(cpia2_exit);
2072