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alpha: fix several security issues
[linux/fpc-iii.git] / drivers / staging / solo6x10 / v4l2.c
blob571c3a348d300817343678140851f29720a5a31e
1 /*
2 * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com
3 * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/kthread.h>
23 #include <linux/freezer.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-common.h>
26 #include <media/videobuf-dma-sg.h>
27 #include "solo6x10.h"
28 #include "tw28.h"
29
30 #define SOLO_HW_BPL 2048
31 #define SOLO_DISP_PIX_FIELD V4L2_FIELD_INTERLACED
32
33 /* Image size is two fields, SOLO_HW_BPL is one horizontal line */
34 #define solo_vlines(__solo) (__solo->video_vsize * 2)
35 #define solo_image_size(__solo) (solo_bytesperline(__solo) * \
36 solo_vlines(__solo))
37 #define solo_bytesperline(__solo) (__solo->video_hsize * 2)
38
39 #define MIN_VID_BUFFERS 4
40
41 /* Simple file handle */
42 struct solo_filehandle {
43 struct solo_dev *solo_dev;
44 struct videobuf_queue vidq;
45 struct task_struct *kthread;
46 spinlock_t slock;
47 int old_write;
48 struct list_head vidq_active;
49 struct p2m_desc desc[SOLO_NR_P2M_DESC];
50 int desc_idx;
51 };
52
53 unsigned video_nr = -1;
54 module_param(video_nr, uint, 0644);
55 MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect (default)");
56
57 static void erase_on(struct solo_dev *solo_dev)
58 {
59 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);
60 solo_dev->erasing = 1;
61 solo_dev->frame_blank = 0;
62 }
63
64 static int erase_off(struct solo_dev *solo_dev)
65 {
66 if (!solo_dev->erasing)
67 return 0;
68
69 /* First time around, assert erase off */
70 if (!solo_dev->frame_blank)
71 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);
72 /* Keep the erasing flag on for 8 frames minimum */
73 if (solo_dev->frame_blank++ >= 8)
74 solo_dev->erasing = 0;
75
76 return 1;
77 }
78
79 void solo_video_in_isr(struct solo_dev *solo_dev)
80 {
81 solo_reg_write(solo_dev, SOLO_IRQ_STAT, SOLO_IRQ_VIDEO_IN);
82 wake_up_interruptible(&solo_dev->disp_thread_wait);
83 }
84
85 static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
86 int sx, int sy, int ex, int ey, int scale)
87 {
88 if (ch >= solo_dev->nr_chans)
89 return;
90
91 /* Here, we just keep window/channel the same */
92 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),
93 SOLO_VI_WIN_CHANNEL(ch) |
94 SOLO_VI_WIN_SX(sx) |
95 SOLO_VI_WIN_EX(ex) |
96 SOLO_VI_WIN_SCALE(scale));
97
98 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
99 SOLO_VI_WIN_SY(sy) |
100 SOLO_VI_WIN_EY(ey));
101 }
102
103 static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
104 {
105 u8 ch = idx * 4;
106
107 if (ch >= solo_dev->nr_chans)
108 return -EINVAL;
109
110 if (!on) {
111 u8 i;
112 for (i = ch; i < ch + 4; i++)
113 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
114 solo_vlines(solo_dev),
115 solo_dev->video_hsize,
116 solo_vlines(solo_dev), 0);
117 return 0;
118 }
119
120 /* Row 1 */
121 solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,
122 solo_vlines(solo_dev) / 2, 3);
123 solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,
124 solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);
125 /* Row 2 */
126 solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,
127 solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);
128 solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,
129 solo_vlines(solo_dev) / 2, solo_dev->video_hsize,
130 solo_vlines(solo_dev), 3);
131
132 return 0;
133 }
134
135 static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
136 {
137 int sy, ysize, hsize, i;
138
139 if (!on) {
140 for (i = 0; i < 16; i++)
141 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
142 solo_vlines(solo_dev),
143 solo_dev->video_hsize,
144 solo_vlines(solo_dev), 0);
145 return 0;
146 }
147
148 ysize = solo_vlines(solo_dev) / 4;
149 hsize = solo_dev->video_hsize / 4;
150
151 for (sy = 0, i = 0; i < 4; i++, sy += ysize) {
152 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,
153 sy + ysize, 5);
154 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,
155 hsize * 2, sy + ysize, 5);
156 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,
157 hsize * 3, sy + ysize, 5);
158 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,
159 solo_dev->video_hsize, sy + ysize, 5);
160 }
161
162 return 0;
163 }
164
165 static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
166 {
167 u8 ext_ch;
168
169 if (ch < solo_dev->nr_chans) {
170 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,
171 on ? 0 : solo_vlines(solo_dev),
172 solo_dev->video_hsize, solo_vlines(solo_dev),
173 on ? 1 : 0);
174 return 0;
175 }
176
177 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
178 return -EINVAL;
179
180 ext_ch = ch - solo_dev->nr_chans;
181
182 /* 4up's first */
183 if (ext_ch < 4)
184 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);
185
186 /* Remaining case is 16up for 16-port */
187 return solo_v4l2_ch_ext_16up(solo_dev, on);
188 }
189
190 static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
191 {
192 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
193 return -EINVAL;
194
195 erase_on(solo_dev);
196
197 solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);
198 solo_v4l2_ch(solo_dev, ch, 1);
199
200 solo_dev->cur_disp_ch = ch;
201
202 return 0;
203 }
204
205 static void disp_reset_desc(struct solo_filehandle *fh)
206 {
207 /* We use desc mode, which ignores desc 0 */
208 memset(fh->desc, 0, sizeof(*fh->desc));
209 fh->desc_idx = 1;
210 }
211
212 static int disp_flush_descs(struct solo_filehandle *fh)
213 {
214 int ret;
215
216 if (!fh->desc_idx)
217 return 0;
218
219 ret = solo_p2m_dma_desc(fh->solo_dev, SOLO_P2M_DMA_ID_DISP,
220 fh->desc, fh->desc_idx);
221 disp_reset_desc(fh);
222
223 return ret;
224 }
225
226 static int disp_push_desc(struct solo_filehandle *fh, dma_addr_t dma_addr,
227 u32 ext_addr, int size, int repeat, int ext_size)
228 {
229 if (fh->desc_idx >= SOLO_NR_P2M_DESC) {
230 int ret = disp_flush_descs(fh);
231 if (ret)
232 return ret;
233 }
234
235 solo_p2m_push_desc(&fh->desc[fh->desc_idx], 0, dma_addr, ext_addr,
236 size, repeat, ext_size);
237 fh->desc_idx++;
238
239 return 0;
240 }
241
242 static void solo_fillbuf(struct solo_filehandle *fh,
243 struct videobuf_buffer *vb)
244 {
245 struct solo_dev *solo_dev = fh->solo_dev;
246 struct videobuf_dmabuf *vbuf;
247 unsigned int fdma_addr;
248 int error = 1;
249 int i;
250 struct scatterlist *sg;
251 dma_addr_t sg_dma;
252 int sg_size_left;
253
254 vbuf = videobuf_to_dma(vb);
255 if (!vbuf)
256 goto finish_buf;
257
258 if (erase_off(solo_dev)) {
259 int i;
260
261 /* Just blit to the entire sg list, ignoring size */
262 for_each_sg(vbuf->sglist, sg, vbuf->sglen, i) {
263 void *p = sg_virt(sg);
264 size_t len = sg_dma_len(sg);
265
266 for (i = 0; i < len; i += 2) {
267 ((u8 *)p)[i] = 0x80;
268 ((u8 *)p)[i + 1] = 0x00;
269 }
270 }
271
272 error = 0;
273 goto finish_buf;
274 }
275
276 disp_reset_desc(fh);
277 sg = vbuf->sglist;
278 sg_dma = sg_dma_address(sg);
279 sg_size_left = sg_dma_len(sg);
280
281 fdma_addr = SOLO_DISP_EXT_ADDR + (fh->old_write *
282 (SOLO_HW_BPL * solo_vlines(solo_dev)));
283
284 for (i = 0; i < solo_vlines(solo_dev); i++) {
285 int line_len = solo_bytesperline(solo_dev);
286 int lines;
287
288 if (!sg_size_left) {
289 sg = sg_next(sg);
290 if (sg == NULL)
291 goto finish_buf;
292 sg_dma = sg_dma_address(sg);
293 sg_size_left = sg_dma_len(sg);
294 }
295
296 /* No room for an entire line, so chunk it up */
297 if (sg_size_left < line_len) {
298 int this_addr = fdma_addr;
299
300 while (line_len > 0) {
301 int this_write;
302
303 if (!sg_size_left) {
304 sg = sg_next(sg);
305 if (sg == NULL)
306 goto finish_buf;
307 sg_dma = sg_dma_address(sg);
308 sg_size_left = sg_dma_len(sg);
309 }
310
311 this_write = min(sg_size_left, line_len);
312
313 if (disp_push_desc(fh, sg_dma, this_addr,
314 this_write, 0, 0))
315 goto finish_buf;
316
317 line_len -= this_write;
318 sg_size_left -= this_write;
319 sg_dma += this_write;
320 this_addr += this_write;
321 }
322
323 fdma_addr += SOLO_HW_BPL;
324 continue;
325 }
326
327 /* Shove as many lines into a repeating descriptor as possible */
328 lines = min(sg_size_left / line_len,
329 solo_vlines(solo_dev) - i);
330
331 if (disp_push_desc(fh, sg_dma, fdma_addr, line_len,
332 lines - 1, SOLO_HW_BPL))
333 goto finish_buf;
334
335 i += lines - 1;
336 fdma_addr += SOLO_HW_BPL * lines;
337 sg_dma += lines * line_len;
338 sg_size_left -= lines * line_len;
339 }
340
341 error = disp_flush_descs(fh);
342
343 finish_buf:
344 if (error) {
345 vb->state = VIDEOBUF_ERROR;
346 } else {
347 vb->size = solo_vlines(solo_dev) * solo_bytesperline(solo_dev);
348 vb->state = VIDEOBUF_DONE;
349 vb->field_count++;
350 do_gettimeofday(&vb->ts);
351 }
352
353 wake_up(&vb->done);
354
355 return;
356 }
357
358 static void solo_thread_try(struct solo_filehandle *fh)
359 {
360 struct videobuf_buffer *vb;
361 unsigned int cur_write;
362
363 for (;;) {
364 spin_lock(&fh->slock);
365
366 if (list_empty(&fh->vidq_active))
367 break;
368
369 vb = list_first_entry(&fh->vidq_active, struct videobuf_buffer,
370 queue);
371
372 if (!waitqueue_active(&vb->done))
373 break;
374
375 cur_write = SOLO_VI_STATUS0_PAGE(solo_reg_read(fh->solo_dev,
376 SOLO_VI_STATUS0));
377 if (cur_write == fh->old_write)
378 break;
379
380 fh->old_write = cur_write;
381 list_del(&vb->queue);
382
383 spin_unlock(&fh->slock);
384
385 solo_fillbuf(fh, vb);
386 }
387
388 assert_spin_locked(&fh->slock);
389 spin_unlock(&fh->slock);
390 }
391
392 static int solo_thread(void *data)
393 {
394 struct solo_filehandle *fh = data;
395 struct solo_dev *solo_dev = fh->solo_dev;
396 DECLARE_WAITQUEUE(wait, current);
397
398 set_freezable();
399 add_wait_queue(&solo_dev->disp_thread_wait, &wait);
400
401 for (;;) {
402 long timeout = schedule_timeout_interruptible(HZ);
403 if (timeout == -ERESTARTSYS || kthread_should_stop())
404 break;
405 solo_thread_try(fh);
406 try_to_freeze();
407 }
408
409 remove_wait_queue(&solo_dev->disp_thread_wait, &wait);
410
411 return 0;
412 }
413
414 static int solo_start_thread(struct solo_filehandle *fh)
415 {
416 fh->kthread = kthread_run(solo_thread, fh, SOLO6X10_NAME "_disp");
417
418 if (IS_ERR(fh->kthread))
419 return PTR_ERR(fh->kthread);
420
421 return 0;
422 }
423
424 static void solo_stop_thread(struct solo_filehandle *fh)
425 {
426 if (fh->kthread) {
427 kthread_stop(fh->kthread);
428 fh->kthread = NULL;
429 }
430 }
431
432 static int solo_buf_setup(struct videobuf_queue *vq, unsigned int *count,
433 unsigned int *size)
434 {
435 struct solo_filehandle *fh = vq->priv_data;
436 struct solo_dev *solo_dev = fh->solo_dev;
437
438 *size = solo_image_size(solo_dev);
439
440 if (*count < MIN_VID_BUFFERS)
441 *count = MIN_VID_BUFFERS;
442
443 return 0;
444 }
445
446 static int solo_buf_prepare(struct videobuf_queue *vq,
447 struct videobuf_buffer *vb, enum v4l2_field field)
448 {
449 struct solo_filehandle *fh = vq->priv_data;
450 struct solo_dev *solo_dev = fh->solo_dev;
451
452 vb->size = solo_image_size(solo_dev);
453 if (vb->baddr != 0 && vb->bsize < vb->size)
454 return -EINVAL;
455
456 /* XXX: These properties only change when queue is idle */
457 vb->width = solo_dev->video_hsize;
458 vb->height = solo_vlines(solo_dev);
459 vb->bytesperline = solo_bytesperline(solo_dev);
460 vb->field = field;
461
462 if (vb->state == VIDEOBUF_NEEDS_INIT) {
463 int rc = videobuf_iolock(vq, vb, NULL);
464 if (rc < 0) {
465 struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
466 videobuf_dma_unmap(vq->dev, dma);
467 videobuf_dma_free(dma);
468 vb->state = VIDEOBUF_NEEDS_INIT;
469 return rc;
470 }
471 }
472 vb->state = VIDEOBUF_PREPARED;
473
474 return 0;
475 }
476
477 static void solo_buf_queue(struct videobuf_queue *vq,
478 struct videobuf_buffer *vb)
479 {
480 struct solo_filehandle *fh = vq->priv_data;
481 struct solo_dev *solo_dev = fh->solo_dev;
482
483 vb->state = VIDEOBUF_QUEUED;
484 list_add_tail(&vb->queue, &fh->vidq_active);
485 wake_up_interruptible(&solo_dev->disp_thread_wait);
486 }
487
488 static void solo_buf_release(struct videobuf_queue *vq,
489 struct videobuf_buffer *vb)
490 {
491 struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
492
493 videobuf_dma_unmap(vq->dev, dma);
494 videobuf_dma_free(dma);
495 vb->state = VIDEOBUF_NEEDS_INIT;
496 }
497
498 static struct videobuf_queue_ops solo_video_qops = {
499 .buf_setup = solo_buf_setup,
500 .buf_prepare = solo_buf_prepare,
501 .buf_queue = solo_buf_queue,
502 .buf_release = solo_buf_release,
503 };
504
505 static unsigned int solo_v4l2_poll(struct file *file,
506 struct poll_table_struct *wait)
507 {
508 struct solo_filehandle *fh = file->private_data;
509
510 return videobuf_poll_stream(file, &fh->vidq, wait);
511 }
512
513 static int solo_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
514 {
515 struct solo_filehandle *fh = file->private_data;
516
517 return videobuf_mmap_mapper(&fh->vidq, vma);
518 }
519
520 static int solo_v4l2_open(struct file *file)
521 {
522 struct solo_dev *solo_dev = video_drvdata(file);
523 struct solo_filehandle *fh;
524 int ret;
525
526 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
527 if (fh == NULL)
528 return -ENOMEM;
529
530 spin_lock_init(&fh->slock);
531 INIT_LIST_HEAD(&fh->vidq_active);
532 fh->solo_dev = solo_dev;
533 file->private_data = fh;
534
535 ret = solo_start_thread(fh);
536 if (ret) {
537 kfree(fh);
538 return ret;
539 }
540
541 videobuf_queue_sg_init(&fh->vidq, &solo_video_qops,
542 &solo_dev->pdev->dev, &fh->slock,
543 V4L2_BUF_TYPE_VIDEO_CAPTURE,
544 SOLO_DISP_PIX_FIELD,
545 sizeof(struct videobuf_buffer), fh, NULL);
546
547 return 0;
548 }
549
550 static ssize_t solo_v4l2_read(struct file *file, char __user *data,
551 size_t count, loff_t *ppos)
552 {
553 struct solo_filehandle *fh = file->private_data;
554
555 return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,
556 file->f_flags & O_NONBLOCK);
557 }
558
559 static int solo_v4l2_release(struct file *file)
560 {
561 struct solo_filehandle *fh = file->private_data;
562
563 videobuf_stop(&fh->vidq);
564 videobuf_mmap_free(&fh->vidq);
565 solo_stop_thread(fh);
566 kfree(fh);
567
568 return 0;
569 }
570
571 static int solo_querycap(struct file *file, void *priv,
572 struct v4l2_capability *cap)
573 {
574 struct solo_filehandle *fh = priv;
575 struct solo_dev *solo_dev = fh->solo_dev;
576
577 strcpy(cap->driver, SOLO6X10_NAME);
578 strcpy(cap->card, "Softlogic 6x10");
579 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI %s",
580 pci_name(solo_dev->pdev));
581 cap->version = SOLO6X10_VER_NUM;
582 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
583 V4L2_CAP_READWRITE |
584 V4L2_CAP_STREAMING;
585 return 0;
586 }
587
588 static int solo_enum_ext_input(struct solo_dev *solo_dev,
589 struct v4l2_input *input)
590 {
591 static const char *dispnames_1[] = { "4UP" };
592 static const char *dispnames_2[] = { "4UP-1", "4UP-2" };
593 static const char *dispnames_5[] = {
594 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
595 };
596 const char **dispnames;
597
598 if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
599 return -EINVAL;
600
601 if (solo_dev->nr_ext == 5)
602 dispnames = dispnames_5;
603 else if (solo_dev->nr_ext == 2)
604 dispnames = dispnames_2;
605 else
606 dispnames = dispnames_1;
607
608 snprintf(input->name, sizeof(input->name), "Multi %s",
609 dispnames[input->index - solo_dev->nr_chans]);
610
611 return 0;
612 }
613
614 static int solo_enum_input(struct file *file, void *priv,
615 struct v4l2_input *input)
616 {
617 struct solo_filehandle *fh = priv;
618 struct solo_dev *solo_dev = fh->solo_dev;
619
620 if (input->index >= solo_dev->nr_chans) {
621 int ret = solo_enum_ext_input(solo_dev, input);
622 if (ret < 0)
623 return ret;
624 } else {
625 snprintf(input->name, sizeof(input->name), "Camera %d",
626 input->index + 1);
627
628 /* We can only check this for normal inputs */
629 if (!tw28_get_video_status(solo_dev, input->index))
630 input->status = V4L2_IN_ST_NO_SIGNAL;
631 }
632
633 input->type = V4L2_INPUT_TYPE_CAMERA;
634
635 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
636 input->std = V4L2_STD_NTSC_M;
637 else
638 input->std = V4L2_STD_PAL_B;
639
640 return 0;
641 }
642
643 static int solo_set_input(struct file *file, void *priv, unsigned int index)
644 {
645 struct solo_filehandle *fh = priv;
646
647 return solo_v4l2_set_ch(fh->solo_dev, index);
648 }
649
650 static int solo_get_input(struct file *file, void *priv, unsigned int *index)
651 {
652 struct solo_filehandle *fh = priv;
653
654 *index = fh->solo_dev->cur_disp_ch;
655
656 return 0;
657 }
658
659 static int solo_enum_fmt_cap(struct file *file, void *priv,
660 struct v4l2_fmtdesc *f)
661 {
662 if (f->index)
663 return -EINVAL;
664
665 f->pixelformat = V4L2_PIX_FMT_UYVY;
666 strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
667
668 return 0;
669 }
670
671 static int solo_try_fmt_cap(struct file *file, void *priv,
672 struct v4l2_format *f)
673 {
674 struct solo_filehandle *fh = priv;
675 struct solo_dev *solo_dev = fh->solo_dev;
676 struct v4l2_pix_format *pix = &f->fmt.pix;
677 int image_size = solo_image_size(solo_dev);
678
679 /* Check supported sizes */
680 if (pix->width != solo_dev->video_hsize)
681 pix->width = solo_dev->video_hsize;
682 if (pix->height != solo_vlines(solo_dev))
683 pix->height = solo_vlines(solo_dev);
684 if (pix->sizeimage != image_size)
685 pix->sizeimage = image_size;
686
687 /* Check formats */
688 if (pix->field == V4L2_FIELD_ANY)
689 pix->field = SOLO_DISP_PIX_FIELD;
690
691 if (pix->pixelformat != V4L2_PIX_FMT_UYVY ||
692 pix->field != SOLO_DISP_PIX_FIELD ||
693 pix->colorspace != V4L2_COLORSPACE_SMPTE170M)
694 return -EINVAL;
695
696 return 0;
697 }
698
699 static int solo_set_fmt_cap(struct file *file, void *priv,
700 struct v4l2_format *f)
701 {
702 struct solo_filehandle *fh = priv;
703
704 if (videobuf_queue_is_busy(&fh->vidq))
705 return -EBUSY;
706
707 /* For right now, if it doesn't match our running config,
708 * then fail */
709 return solo_try_fmt_cap(file, priv, f);
710 }
711
712 static int solo_get_fmt_cap(struct file *file, void *priv,
713 struct v4l2_format *f)
714 {
715 struct solo_filehandle *fh = priv;
716 struct solo_dev *solo_dev = fh->solo_dev;
717 struct v4l2_pix_format *pix = &f->fmt.pix;
718
719 pix->width = solo_dev->video_hsize;
720 pix->height = solo_vlines(solo_dev);
721 pix->pixelformat = V4L2_PIX_FMT_UYVY;
722 pix->field = SOLO_DISP_PIX_FIELD;
723 pix->sizeimage = solo_image_size(solo_dev);
724 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
725 pix->bytesperline = solo_bytesperline(solo_dev);
726
727 return 0;
728 }
729
730 static int solo_reqbufs(struct file *file, void *priv,
731 struct v4l2_requestbuffers *req)
732 {
733 struct solo_filehandle *fh = priv;
734
735 return videobuf_reqbufs(&fh->vidq, req);
736 }
737
738 static int solo_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf)
739 {
740 struct solo_filehandle *fh = priv;
741
742 return videobuf_querybuf(&fh->vidq, buf);
743 }
744
745 static int solo_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
746 {
747 struct solo_filehandle *fh = priv;
748
749 return videobuf_qbuf(&fh->vidq, buf);
750 }
751
752 static int solo_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
753 {
754 struct solo_filehandle *fh = priv;
755
756 return videobuf_dqbuf(&fh->vidq, buf, file->f_flags & O_NONBLOCK);
757 }
758
759 static int solo_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
760 {
761 struct solo_filehandle *fh = priv;
762
763 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
764 return -EINVAL;
765
766 return videobuf_streamon(&fh->vidq);
767 }
768
769 static int solo_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
770 {
771 struct solo_filehandle *fh = priv;
772
773 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
774 return -EINVAL;
775
776 return videobuf_streamoff(&fh->vidq);
777 }
778
779 static int solo_s_std(struct file *file, void *priv, v4l2_std_id *i)
780 {
781 return 0;
782 }
783
784 static const u32 solo_motion_ctrls[] = {
785 V4L2_CID_MOTION_TRACE,
786 0
787 };
788
789 static const u32 *solo_ctrl_classes[] = {
790 solo_motion_ctrls,
791 NULL
792 };
793
794 static int solo_disp_queryctrl(struct file *file, void *priv,
795 struct v4l2_queryctrl *qc)
796 {
797 qc->id = v4l2_ctrl_next(solo_ctrl_classes, qc->id);
798 if (!qc->id)
799 return -EINVAL;
800
801 switch (qc->id) {
802 #ifdef PRIVATE_CIDS
803 case V4L2_CID_MOTION_TRACE:
804 qc->type = V4L2_CTRL_TYPE_BOOLEAN;
805 qc->minimum = 0;
806 qc->maximum = qc->step = 1;
807 qc->default_value = 0;
808 strlcpy(qc->name, "Motion Detection Trace", sizeof(qc->name));
809 return 0;
810 #else
811 case V4L2_CID_MOTION_TRACE:
812 return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
813 #endif
814 }
815 return -EINVAL;
816 }
817
818 static int solo_disp_g_ctrl(struct file *file, void *priv,
819 struct v4l2_control *ctrl)
820 {
821 struct solo_filehandle *fh = priv;
822 struct solo_dev *solo_dev = fh->solo_dev;
823
824 switch (ctrl->id) {
825 case V4L2_CID_MOTION_TRACE:
826 ctrl->value = solo_reg_read(solo_dev, SOLO_VI_MOTION_BAR)
827 ? 1 : 0;
828 return 0;
829 }
830 return -EINVAL;
831 }
832
833 static int solo_disp_s_ctrl(struct file *file, void *priv,
834 struct v4l2_control *ctrl)
835 {
836 struct solo_filehandle *fh = priv;
837 struct solo_dev *solo_dev = fh->solo_dev;
838
839 switch (ctrl->id) {
840 case V4L2_CID_MOTION_TRACE:
841 if (ctrl->value) {
842 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
843 SOLO_VI_MOTION_Y_ADD |
844 SOLO_VI_MOTION_Y_VALUE(0x20) |
845 SOLO_VI_MOTION_CB_VALUE(0x10) |
846 SOLO_VI_MOTION_CR_VALUE(0x10));
847 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
848 SOLO_VI_MOTION_CR_ADD |
849 SOLO_VI_MOTION_Y_VALUE(0x10) |
850 SOLO_VI_MOTION_CB_VALUE(0x80) |
851 SOLO_VI_MOTION_CR_VALUE(0x10));
852 } else {
853 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
854 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
855 }
856 return 0;
857 }
858 return -EINVAL;
859 }
860
861 static const struct v4l2_file_operations solo_v4l2_fops = {
862 .owner = THIS_MODULE,
863 .open = solo_v4l2_open,
864 .release = solo_v4l2_release,
865 .read = solo_v4l2_read,
866 .poll = solo_v4l2_poll,
867 .mmap = solo_v4l2_mmap,
868 .ioctl = video_ioctl2,
869 };
870
871 static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
872 .vidioc_querycap = solo_querycap,
873 .vidioc_s_std = solo_s_std,
874 /* Input callbacks */
875 .vidioc_enum_input = solo_enum_input,
876 .vidioc_s_input = solo_set_input,
877 .vidioc_g_input = solo_get_input,
878 /* Video capture format callbacks */
879 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,
880 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap,
881 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap,
882 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap,
883 /* Streaming I/O */
884 .vidioc_reqbufs = solo_reqbufs,
885 .vidioc_querybuf = solo_querybuf,
886 .vidioc_qbuf = solo_qbuf,
887 .vidioc_dqbuf = solo_dqbuf,
888 .vidioc_streamon = solo_streamon,
889 .vidioc_streamoff = solo_streamoff,
890 /* Controls */
891 .vidioc_queryctrl = solo_disp_queryctrl,
892 .vidioc_g_ctrl = solo_disp_g_ctrl,
893 .vidioc_s_ctrl = solo_disp_s_ctrl,
894 };
895
896 static struct video_device solo_v4l2_template = {
897 .name = SOLO6X10_NAME,
898 .fops = &solo_v4l2_fops,
899 .ioctl_ops = &solo_v4l2_ioctl_ops,
900 .minor = -1,
901 .release = video_device_release,
902
903 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_B,
904 .current_norm = V4L2_STD_NTSC_M,
905 };
906
907 int solo_v4l2_init(struct solo_dev *solo_dev)
908 {
909 int ret;
910 int i;
911
912 init_waitqueue_head(&solo_dev->disp_thread_wait);
913
914 solo_dev->vfd = video_device_alloc();
915 if (!solo_dev->vfd)
916 return -ENOMEM;
917
918 *solo_dev->vfd = solo_v4l2_template;
919 solo_dev->vfd->parent = &solo_dev->pdev->dev;
920
921 ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, video_nr);
922 if (ret < 0) {
923 video_device_release(solo_dev->vfd);
924 solo_dev->vfd = NULL;
925 return ret;
926 }
927
928 video_set_drvdata(solo_dev->vfd, solo_dev);
929
930 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
931 SOLO6X10_NAME, solo_dev->vfd->num);
932
933 if (video_nr != -1)
934 video_nr++;
935
936 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
937 "%d inputs (%d extended)\n", solo_dev->vfd->num,
938 solo_dev->nr_chans, solo_dev->nr_ext);
939
940 /* Cycle all the channels and clear */
941 for (i = 0; i < solo_dev->nr_chans; i++) {
942 solo_v4l2_set_ch(solo_dev, i);
943 while (erase_off(solo_dev))
944 ;/* Do nothing */
945 }
946
947 /* Set the default display channel */
948 solo_v4l2_set_ch(solo_dev, 0);
949 while (erase_off(solo_dev))
950 ;/* Do nothing */
951
952 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
953
954 return 0;
955 }
956
957 void solo_v4l2_exit(struct solo_dev *solo_dev)
958 {
959 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
960 if (solo_dev->vfd) {
961 video_unregister_device(solo_dev->vfd);
962 solo_dev->vfd = NULL;
963 }
964 }
Linux with added FPC-III support