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[media] v4l2: pass std by value to the write-only s_std ioctl
[linux-block.git] / drivers / staging / media / solo6x10 / v4l2.c
CommitLineData
faa4fd2a
BC		 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>
faa4fd2a
BC		 24#include <media/v4l2-ioctl.h>
25#include <media/v4l2-common.h>
f62de9be 26#include <media/videobuf-dma-sg.h>
ae69b22c
KH		 27#include "solo6x10.h"
28#include "tw28.h"
faa4fd2a
BC		 29
30#define SOLO_HW_BPL 2048
31#define SOLO_DISP_PIX_FIELD V4L2_FIELD_INTERLACED
faa4fd2a
BC		 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 */
42struct solo_filehandle {
decebabf 43 struct solo_dev *solo_dev;
faa4fd2a
BC		 44 struct videobuf_queue vidq;
45 struct task_struct *kthread;
46 spinlock_t slock;
47 int old_write;
48 struct list_head vidq_active;
f62de9be
BC		 49 struct p2m_desc desc[SOLO_NR_P2M_DESC];
50 int desc_idx;
faa4fd2a
BC		 51};
52
53unsigned video_nr = -1;
54module_param(video_nr, uint, 0644);
55MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect (default)");
56
decebabf 57static void erase_on(struct solo_dev *solo_dev)
faa4fd2a
BC		 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
decebabf 64static int erase_off(struct solo_dev *solo_dev)
faa4fd2a
BC		 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
decebabf 79void solo_video_in_isr(struct solo_dev *solo_dev)
faa4fd2a
BC		 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
decebabf 85static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
faa4fd2a
BC		 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
f62de9be 98 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
faa4fd2a
BC		 99 SOLO_VI_WIN_SY(sy) |
100 SOLO_VI_WIN_EY(ey));
101}
102
decebabf 103static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
faa4fd2a
BC		 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
decebabf 135static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
faa4fd2a
BC		 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
decebabf 165static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
faa4fd2a
BC		 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
decebabf 190static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
faa4fd2a
BC		 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
f62de9be
BC		 205static void disp_reset_desc(struct solo_filehandle *fh)
206{
0e4de059
BC		 207 /* We use desc mode, which ignores desc 0 */
208 memset(fh->desc, 0, sizeof(*fh->desc));
209 fh->desc_idx = 1;
f62de9be
BC		 210}
211
212static 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
226static 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
faa4fd2a
BC		 242static void solo_fillbuf(struct solo_filehandle *fh,
243 struct videobuf_buffer *vb)
244{
decebabf 245 struct solo_dev *solo_dev = fh->solo_dev;
afabbe6d 246 struct videobuf_dmabuf *vbuf;
faa4fd2a 247 unsigned int fdma_addr;
faa4fd2a
BC		 248 int error = 1;
249 int i;
afabbe6d 250 struct scatterlist *sg;
f62de9be
BC		 251 dma_addr_t sg_dma;
252 int sg_size_left;
faa4fd2a 253
afabbe6d 254 vbuf = videobuf_to_dma(vb);
255 if (!vbuf)
faa4fd2a
BC		 256 goto finish_buf;
257
258 if (erase_off(solo_dev)) {
f62de9be
BC		 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 }
faa4fd2a 270 }
f62de9be 271
faa4fd2a
BC		 272 error = 0;
273 goto finish_buf;
274 }
275
f62de9be
BC		 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
43d1136d 281 fdma_addr = SOLO_DISP_EXT_ADDR + (fh->old_write *
f62de9be 282 (SOLO_HW_BPL * solo_vlines(solo_dev)));
faa4fd2a 283
f62de9be
BC		 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)
faa4fd2a 291 goto finish_buf;
f62de9be
BC		 292 sg_dma = sg_dma_address(sg);
293 sg_size_left = sg_dma_len(sg);
faa4fd2a 294 }
f62de9be
BC		 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;
faa4fd2a 339 }
f62de9be
BC		 340
341 error = disp_flush_descs(fh);
faa4fd2a
BC		 342
343finish_buf:
344 if (error) {
345 vb->state = VIDEOBUF_ERROR;
346 } else {
f62de9be 347 vb->size = solo_vlines(solo_dev) * solo_bytesperline(solo_dev);
faa4fd2a
BC		 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
358static 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,
f62de9be 376 SOLO_VI_STATUS0));
faa4fd2a
BC		 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
392static int solo_thread(void *data)
393{
394 struct solo_filehandle *fh = data;
decebabf 395 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 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
f62de9be 411 return 0;
faa4fd2a
BC		 412}
413
414static int solo_start_thread(struct solo_filehandle *fh)
415{
decebabf 416 fh->kthread = kthread_run(solo_thread, fh, SOLO6X10_NAME "_disp");
faa4fd2a 417
7d0ee461 418 return PTR_RET(fh->kthread);
faa4fd2a
BC		 419}
420
421static void solo_stop_thread(struct solo_filehandle *fh)
422{
423 if (fh->kthread) {
424 kthread_stop(fh->kthread);
425 fh->kthread = NULL;
426 }
427}
428
429static int solo_buf_setup(struct videobuf_queue *vq, unsigned int *count,
430 unsigned int *size)
431{
432 struct solo_filehandle *fh = vq->priv_data;
decebabf 433 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a 434
f62de9be 435 *size = solo_image_size(solo_dev);
faa4fd2a 436
f62de9be 437 if (*count < MIN_VID_BUFFERS)
faa4fd2a
BC		 438 *count = MIN_VID_BUFFERS;
439
f62de9be 440 return 0;
faa4fd2a
BC		 441}
442
443static int solo_buf_prepare(struct videobuf_queue *vq,
444 struct videobuf_buffer *vb, enum v4l2_field field)
445{
446 struct solo_filehandle *fh = vq->priv_data;
decebabf 447 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 448
449 vb->size = solo_image_size(solo_dev);
450 if (vb->baddr != 0 && vb->bsize < vb->size)
451 return -EINVAL;
452
453 /* XXX: These properties only change when queue is idle */
454 vb->width = solo_dev->video_hsize;
455 vb->height = solo_vlines(solo_dev);
456 vb->bytesperline = solo_bytesperline(solo_dev);
457 vb->field = field;
458
459 if (vb->state == VIDEOBUF_NEEDS_INIT) {
460 int rc = videobuf_iolock(vq, vb, NULL);
461 if (rc < 0) {
f62de9be 462 struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
319fb3ba 463 videobuf_dma_unmap(vq->dev, dma);
f62de9be 464 videobuf_dma_free(dma);
faa4fd2a
BC		 465 vb->state = VIDEOBUF_NEEDS_INIT;
466 return rc;
467 }
468 }
469 vb->state = VIDEOBUF_PREPARED;
470
471 return 0;
472}
473
474static void solo_buf_queue(struct videobuf_queue *vq,
475 struct videobuf_buffer *vb)
476{
477 struct solo_filehandle *fh = vq->priv_data;
decebabf 478 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 479
480 vb->state = VIDEOBUF_QUEUED;
481 list_add_tail(&vb->queue, &fh->vidq_active);
482 wake_up_interruptible(&solo_dev->disp_thread_wait);
483}
484
485static void solo_buf_release(struct videobuf_queue *vq,
486 struct videobuf_buffer *vb)
487{
f62de9be
BC		 488 struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
489
319fb3ba 490 videobuf_dma_unmap(vq->dev, dma);
f62de9be 491 videobuf_dma_free(dma);
faa4fd2a
BC		 492 vb->state = VIDEOBUF_NEEDS_INIT;
493}
494
495static struct videobuf_queue_ops solo_video_qops = {
496 .buf_setup = solo_buf_setup,
497 .buf_prepare = solo_buf_prepare,
498 .buf_queue = solo_buf_queue,
499 .buf_release = solo_buf_release,
500};
501
502static unsigned int solo_v4l2_poll(struct file *file,
503 struct poll_table_struct *wait)
504{
505 struct solo_filehandle *fh = file->private_data;
506
f62de9be 507 return videobuf_poll_stream(file, &fh->vidq, wait);
faa4fd2a
BC		 508}
509
510static int solo_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
511{
512 struct solo_filehandle *fh = file->private_data;
513
514 return videobuf_mmap_mapper(&fh->vidq, vma);
515}
516
517static int solo_v4l2_open(struct file *file)
518{
decebabf 519 struct solo_dev *solo_dev = video_drvdata(file);
faa4fd2a
BC		 520 struct solo_filehandle *fh;
521 int ret;
522
afabbe6d 523 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
524 if (fh == NULL)
faa4fd2a
BC		 525 return -ENOMEM;
526
527 spin_lock_init(&fh->slock);
528 INIT_LIST_HEAD(&fh->vidq_active);
529 fh->solo_dev = solo_dev;
530 file->private_data = fh;
531
afabbe6d 532 ret = solo_start_thread(fh);
533 if (ret) {
faa4fd2a
BC		 534 kfree(fh);
535 return ret;
536 }
537
f62de9be
BC		 538 videobuf_queue_sg_init(&fh->vidq, &solo_video_qops,
539 &solo_dev->pdev->dev, &fh->slock,
540 V4L2_BUF_TYPE_VIDEO_CAPTURE,
541 SOLO_DISP_PIX_FIELD,
319fb3ba 542 sizeof(struct videobuf_buffer), fh, NULL);
faa4fd2a
BC		 543
544 return 0;
545}
546
547static ssize_t solo_v4l2_read(struct file *file, char __user *data,
548 size_t count, loff_t *ppos)
549{
550 struct solo_filehandle *fh = file->private_data;
551
552 return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,
553 file->f_flags & O_NONBLOCK);
554}
555
556static int solo_v4l2_release(struct file *file)
557{
558 struct solo_filehandle *fh = file->private_data;
559
560 videobuf_stop(&fh->vidq);
561 videobuf_mmap_free(&fh->vidq);
562 solo_stop_thread(fh);
563 kfree(fh);
564
565 return 0;
566}
567
568static int solo_querycap(struct file *file, void *priv,
569 struct v4l2_capability *cap)
570{
571 struct solo_filehandle *fh = priv;
decebabf 572 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a 573
decebabf
KH		 574 strcpy(cap->driver, SOLO6X10_NAME);
575 strcpy(cap->card, "Softlogic 6x10");
faa4fd2a
BC		 576 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI %s",
577 pci_name(solo_dev->pdev));
decebabf 578 cap->version = SOLO6X10_VER_NUM;
faa4fd2a
BC		 579 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
580 V4L2_CAP_READWRITE |
581 V4L2_CAP_STREAMING;
582 return 0;
583}
584
decebabf 585static int solo_enum_ext_input(struct solo_dev *solo_dev,
faa4fd2a
BC		 586 struct v4l2_input *input)
587{
588 static const char *dispnames_1[] = { "4UP" };
589 static const char *dispnames_2[] = { "4UP-1", "4UP-2" };
590 static const char *dispnames_5[] = {
591 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
592 };
593 const char **dispnames;
594
595 if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
596 return -EINVAL;
597
598 if (solo_dev->nr_ext == 5)
599 dispnames = dispnames_5;
600 else if (solo_dev->nr_ext == 2)
601 dispnames = dispnames_2;
602 else
603 dispnames = dispnames_1;
604
605 snprintf(input->name, sizeof(input->name), "Multi %s",
606 dispnames[input->index - solo_dev->nr_chans]);
607
608 return 0;
609}
610
611static int solo_enum_input(struct file *file, void *priv,
612 struct v4l2_input *input)
613{
614 struct solo_filehandle *fh = priv;
decebabf 615 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 616
617 if (input->index >= solo_dev->nr_chans) {
618 int ret = solo_enum_ext_input(solo_dev, input);
619 if (ret < 0)
620 return ret;
621 } else {
622 snprintf(input->name, sizeof(input->name), "Camera %d",
623 input->index + 1);
624
625 /* We can only check this for normal inputs */
626 if (!tw28_get_video_status(solo_dev, input->index))
627 input->status = V4L2_IN_ST_NO_SIGNAL;
628 }
629
630 input->type = V4L2_INPUT_TYPE_CAMERA;
631
632 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
633 input->std = V4L2_STD_NTSC_M;
634 else
f62de9be 635 input->std = V4L2_STD_PAL_B;
faa4fd2a
BC		 636
637 return 0;
638}
639
640static int solo_set_input(struct file *file, void *priv, unsigned int index)
641{
642 struct solo_filehandle *fh = priv;
643
644 return solo_v4l2_set_ch(fh->solo_dev, index);
645}
646
647static int solo_get_input(struct file *file, void *priv, unsigned int *index)
648{
649 struct solo_filehandle *fh = priv;
650
651 *index = fh->solo_dev->cur_disp_ch;
652
653 return 0;
654}
655
656static int solo_enum_fmt_cap(struct file *file, void *priv,
657 struct v4l2_fmtdesc *f)
658{
659 if (f->index)
660 return -EINVAL;
661
662 f->pixelformat = V4L2_PIX_FMT_UYVY;
663 strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
664
665 return 0;
666}
667
668static int solo_try_fmt_cap(struct file *file, void *priv,
669 struct v4l2_format *f)
670{
671 struct solo_filehandle *fh = priv;
decebabf 672 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 673 struct v4l2_pix_format *pix = &f->fmt.pix;
674 int image_size = solo_image_size(solo_dev);
675
676 /* Check supported sizes */
677 if (pix->width != solo_dev->video_hsize)
678 pix->width = solo_dev->video_hsize;
679 if (pix->height != solo_vlines(solo_dev))
680 pix->height = solo_vlines(solo_dev);
681 if (pix->sizeimage != image_size)
682 pix->sizeimage = image_size;
683
684 /* Check formats */
685 if (pix->field == V4L2_FIELD_ANY)
686 pix->field = SOLO_DISP_PIX_FIELD;
687
688 if (pix->pixelformat != V4L2_PIX_FMT_UYVY ||
689 pix->field != SOLO_DISP_PIX_FIELD ||
690 pix->colorspace != V4L2_COLORSPACE_SMPTE170M)
691 return -EINVAL;
692
693 return 0;
694}
695
696static int solo_set_fmt_cap(struct file *file, void *priv,
697 struct v4l2_format *f)
698{
699 struct solo_filehandle *fh = priv;
700
701 if (videobuf_queue_is_busy(&fh->vidq))
702 return -EBUSY;
703
704 /* For right now, if it doesn't match our running config,
705 * then fail */
706 return solo_try_fmt_cap(file, priv, f);
707}
708
709static int solo_get_fmt_cap(struct file *file, void *priv,
710 struct v4l2_format *f)
711{
712 struct solo_filehandle *fh = priv;
decebabf 713 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 714 struct v4l2_pix_format *pix = &f->fmt.pix;
715
716 pix->width = solo_dev->video_hsize;
717 pix->height = solo_vlines(solo_dev);
718 pix->pixelformat = V4L2_PIX_FMT_UYVY;
719 pix->field = SOLO_DISP_PIX_FIELD;
720 pix->sizeimage = solo_image_size(solo_dev);
721 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
722 pix->bytesperline = solo_bytesperline(solo_dev);
723
724 return 0;
725}
726
afabbe6d 727static int solo_reqbufs(struct file *file, void *priv,
faa4fd2a
BC		 728 struct v4l2_requestbuffers *req)
729{
730 struct solo_filehandle *fh = priv;
731
732 return videobuf_reqbufs(&fh->vidq, req);
733}
734
735static int solo_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf)
736{
737 struct solo_filehandle *fh = priv;
738
739 return videobuf_querybuf(&fh->vidq, buf);
740}
741
742static int solo_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
743{
744 struct solo_filehandle *fh = priv;
745
746 return videobuf_qbuf(&fh->vidq, buf);
747}
748
749static int solo_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
750{
751 struct solo_filehandle *fh = priv;
752
753 return videobuf_dqbuf(&fh->vidq, buf, file->f_flags & O_NONBLOCK);
754}
755
756static int solo_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
757{
758 struct solo_filehandle *fh = priv;
759
760 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
761 return -EINVAL;
762
763 return videobuf_streamon(&fh->vidq);
764}
765
766static int solo_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
767{
768 struct solo_filehandle *fh = priv;
769
770 if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
771 return -EINVAL;
772
773 return videobuf_streamoff(&fh->vidq);
774}
775
314527ac 776static int solo_s_std(struct file *file, void *priv, v4l2_std_id i)
faa4fd2a
BC		 777{
778 return 0;
779}
780
781static const u32 solo_motion_ctrls[] = {
782 V4L2_CID_MOTION_TRACE,
783 0
784};
785
786static const u32 *solo_ctrl_classes[] = {
787 solo_motion_ctrls,
788 NULL
789};
790
791static int solo_disp_queryctrl(struct file *file, void *priv,
792 struct v4l2_queryctrl *qc)
793{
794 qc->id = v4l2_ctrl_next(solo_ctrl_classes, qc->id);
795 if (!qc->id)
796 return -EINVAL;
797
798 switch (qc->id) {
799#ifdef PRIVATE_CIDS
800 case V4L2_CID_MOTION_TRACE:
801 qc->type = V4L2_CTRL_TYPE_BOOLEAN;
802 qc->minimum = 0;
803 qc->maximum = qc->step = 1;
804 qc->default_value = 0;
805 strlcpy(qc->name, "Motion Detection Trace", sizeof(qc->name));
806 return 0;
807#else
808 case V4L2_CID_MOTION_TRACE:
809 return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
810#endif
811 }
812 return -EINVAL;
813}
814
815static int solo_disp_g_ctrl(struct file *file, void *priv,
816 struct v4l2_control *ctrl)
817{
818 struct solo_filehandle *fh = priv;
decebabf 819 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 820
821 switch (ctrl->id) {
822 case V4L2_CID_MOTION_TRACE:
823 ctrl->value = solo_reg_read(solo_dev, SOLO_VI_MOTION_BAR)
824 ? 1 : 0;
825 return 0;
826 }
827 return -EINVAL;
828}
829
830static int solo_disp_s_ctrl(struct file *file, void *priv,
831 struct v4l2_control *ctrl)
832{
833 struct solo_filehandle *fh = priv;
decebabf 834 struct solo_dev *solo_dev = fh->solo_dev;
faa4fd2a
BC		 835
836 switch (ctrl->id) {
837 case V4L2_CID_MOTION_TRACE:
838 if (ctrl->value) {
839 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
840 SOLO_VI_MOTION_Y_ADD |
841 SOLO_VI_MOTION_Y_VALUE(0x20) |
842 SOLO_VI_MOTION_CB_VALUE(0x10) |
843 SOLO_VI_MOTION_CR_VALUE(0x10));
844 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
845 SOLO_VI_MOTION_CR_ADD |
846 SOLO_VI_MOTION_Y_VALUE(0x10) |
847 SOLO_VI_MOTION_CB_VALUE(0x80) |
848 SOLO_VI_MOTION_CR_VALUE(0x10));
849 } else {
850 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
851 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
852 }
853 return 0;
854 }
855 return -EINVAL;
856}
857
858static const struct v4l2_file_operations solo_v4l2_fops = {
859 .owner = THIS_MODULE,
860 .open = solo_v4l2_open,
861 .release = solo_v4l2_release,
862 .read = solo_v4l2_read,
863 .poll = solo_v4l2_poll,
864 .mmap = solo_v4l2_mmap,
865 .ioctl = video_ioctl2,
866};
867
868static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
869 .vidioc_querycap = solo_querycap,
870 .vidioc_s_std = solo_s_std,
871 /* Input callbacks */
872 .vidioc_enum_input = solo_enum_input,
873 .vidioc_s_input = solo_set_input,
874 .vidioc_g_input = solo_get_input,
875 /* Video capture format callbacks */
876 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,
877 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap,
878 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap,
879 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap,
880 /* Streaming I/O */
881 .vidioc_reqbufs = solo_reqbufs,
882 .vidioc_querybuf = solo_querybuf,
883 .vidioc_qbuf = solo_qbuf,
884 .vidioc_dqbuf = solo_dqbuf,
885 .vidioc_streamon = solo_streamon,
f62de9be 886 .vidioc_streamoff = solo_streamoff,
faa4fd2a
BC		 887 /* Controls */
888 .vidioc_queryctrl = solo_disp_queryctrl,
f62de9be
BC		 889 .vidioc_g_ctrl = solo_disp_g_ctrl,
890 .vidioc_s_ctrl = solo_disp_s_ctrl,
faa4fd2a
BC		 891};
892
893static struct video_device solo_v4l2_template = {
decebabf 894 .name = SOLO6X10_NAME,
faa4fd2a
BC		 895 .fops = &solo_v4l2_fops,
896 .ioctl_ops = &solo_v4l2_ioctl_ops,
897 .minor = -1,
898 .release = video_device_release,
899
f62de9be 900 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_B,
faa4fd2a
BC		 901 .current_norm = V4L2_STD_NTSC_M,
902};
903
decebabf 904int solo_v4l2_init(struct solo_dev *solo_dev)
faa4fd2a
BC		 905{
906 int ret;
907 int i;
908
909 init_waitqueue_head(&solo_dev->disp_thread_wait);
910
911 solo_dev->vfd = video_device_alloc();
912 if (!solo_dev->vfd)
913 return -ENOMEM;
914
915 *solo_dev->vfd = solo_v4l2_template;
916 solo_dev->vfd->parent = &solo_dev->pdev->dev;
917
918 ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, video_nr);
919 if (ret < 0) {
920 video_device_release(solo_dev->vfd);
921 solo_dev->vfd = NULL;
922 return ret;
923 }
924
925 video_set_drvdata(solo_dev->vfd, solo_dev);
926
927 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
decebabf 928 SOLO6X10_NAME, solo_dev->vfd->num);
faa4fd2a 929
3850a8ae 930 if (video_nr != -1)
faa4fd2a
BC		 931 video_nr++;
932
933 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
934 "%d inputs (%d extended)\n", solo_dev->vfd->num,
935 solo_dev->nr_chans, solo_dev->nr_ext);
936
937 /* Cycle all the channels and clear */
938 for (i = 0; i < solo_dev->nr_chans; i++) {
939 solo_v4l2_set_ch(solo_dev, i);
940 while (erase_off(solo_dev))
afabbe6d 941 ;/* Do nothing */
faa4fd2a
BC		 942 }
943
944 /* Set the default display channel */
945 solo_v4l2_set_ch(solo_dev, 0);
946 while (erase_off(solo_dev))
afabbe6d 947 ;/* Do nothing */
faa4fd2a 948
decebabf 949 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
faa4fd2a
BC		 950
951 return 0;
952}
953
decebabf 954void solo_v4l2_exit(struct solo_dev *solo_dev)
faa4fd2a 955{
decebabf 956 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
faa4fd2a
BC		 957 if (solo_dev->vfd) {
958 video_unregister_device(solo_dev->vfd);
959 solo_dev->vfd = NULL;
960 }
961}
Linux 6.x block layer and io_uring tree(s)