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s390/ptrace: get rid of long longs in psw_bits
[linux/fpc-iii.git] / drivers / media / pci / solo6x10 / solo6x10-v4l2.c
blobf7ce493b1feed72c27dd4f9d58e1ebe15bec5708
1 /*
2 * Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
3 *
4 * Original author:
5 * Ben Collins <bcollins@ubuntu.com>
6 *
7 * Additional work by:
8 * John Brooks <john.brooks@bluecherry.net>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
20
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/kthread.h>
24 #include <linux/freezer.h>
25
26 #include <media/v4l2-ioctl.h>
27 #include <media/v4l2-common.h>
28 #include <media/v4l2-event.h>
29 #include <media/videobuf2-v4l2.h>
30 #include <media/videobuf2-dma-contig.h>
31
32 #include "solo6x10.h"
33 #include "solo6x10-tw28.h"
34
35 /* Image size is two fields, SOLO_HW_BPL is one horizontal line in hardware */
36 #define SOLO_HW_BPL 2048
37 #define solo_vlines(__solo) (__solo->video_vsize * 2)
38 #define solo_image_size(__solo) (solo_bytesperline(__solo) * \
39 solo_vlines(__solo))
40 #define solo_bytesperline(__solo) (__solo->video_hsize * 2)
41
42 #define MIN_VID_BUFFERS 2
43
44 static inline void erase_on(struct solo_dev *solo_dev)
45 {
46 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);
47 solo_dev->erasing = 1;
48 solo_dev->frame_blank = 0;
49 }
50
51 static inline int erase_off(struct solo_dev *solo_dev)
52 {
53 if (!solo_dev->erasing)
54 return 0;
55
56 /* First time around, assert erase off */
57 if (!solo_dev->frame_blank)
58 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);
59 /* Keep the erasing flag on for 8 frames minimum */
60 if (solo_dev->frame_blank++ >= 8)
61 solo_dev->erasing = 0;
62
63 return 1;
64 }
65
66 void solo_video_in_isr(struct solo_dev *solo_dev)
67 {
68 wake_up_interruptible_all(&solo_dev->disp_thread_wait);
69 }
70
71 static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
72 int sx, int sy, int ex, int ey, int scale)
73 {
74 if (ch >= solo_dev->nr_chans)
75 return;
76
77 /* Here, we just keep window/channel the same */
78 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),
79 SOLO_VI_WIN_CHANNEL(ch) |
80 SOLO_VI_WIN_SX(sx) |
81 SOLO_VI_WIN_EX(ex) |
82 SOLO_VI_WIN_SCALE(scale));
83
84 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
85 SOLO_VI_WIN_SY(sy) |
86 SOLO_VI_WIN_EY(ey));
87 }
88
89 static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
90 {
91 u8 ch = idx * 4;
92
93 if (ch >= solo_dev->nr_chans)
94 return -EINVAL;
95
96 if (!on) {
97 u8 i;
98
99 for (i = ch; i < ch + 4; i++)
100 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
101 solo_vlines(solo_dev),
102 solo_dev->video_hsize,
103 solo_vlines(solo_dev), 0);
104 return 0;
105 }
106
107 /* Row 1 */
108 solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,
109 solo_vlines(solo_dev) / 2, 3);
110 solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,
111 solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);
112 /* Row 2 */
113 solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,
114 solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);
115 solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,
116 solo_vlines(solo_dev) / 2, solo_dev->video_hsize,
117 solo_vlines(solo_dev), 3);
118
119 return 0;
120 }
121
122 static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
123 {
124 int sy, ysize, hsize, i;
125
126 if (!on) {
127 for (i = 0; i < 16; i++)
128 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
129 solo_vlines(solo_dev),
130 solo_dev->video_hsize,
131 solo_vlines(solo_dev), 0);
132 return 0;
133 }
134
135 ysize = solo_vlines(solo_dev) / 4;
136 hsize = solo_dev->video_hsize / 4;
137
138 for (sy = 0, i = 0; i < 4; i++, sy += ysize) {
139 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,
140 sy + ysize, 5);
141 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,
142 hsize * 2, sy + ysize, 5);
143 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,
144 hsize * 3, sy + ysize, 5);
145 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,
146 solo_dev->video_hsize, sy + ysize, 5);
147 }
148
149 return 0;
150 }
151
152 static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
153 {
154 u8 ext_ch;
155
156 if (ch < solo_dev->nr_chans) {
157 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,
158 on ? 0 : solo_vlines(solo_dev),
159 solo_dev->video_hsize, solo_vlines(solo_dev),
160 on ? 1 : 0);
161 return 0;
162 }
163
164 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
165 return -EINVAL;
166
167 ext_ch = ch - solo_dev->nr_chans;
168
169 /* 4up's first */
170 if (ext_ch < 4)
171 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);
172
173 /* Remaining case is 16up for 16-port */
174 return solo_v4l2_ch_ext_16up(solo_dev, on);
175 }
176
177 static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
178 {
179 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
180 return -EINVAL;
181
182 erase_on(solo_dev);
183
184 solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);
185 solo_v4l2_ch(solo_dev, ch, 1);
186
187 solo_dev->cur_disp_ch = ch;
188
189 return 0;
190 }
191
192 static void solo_fillbuf(struct solo_dev *solo_dev,
193 struct vb2_buffer *vb)
194 {
195 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
196 dma_addr_t addr;
197 unsigned int fdma_addr;
198 int error = -1;
199 int i;
200
201 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
202 if (!addr)
203 goto finish_buf;
204
205 if (erase_off(solo_dev)) {
206 void *p = vb2_plane_vaddr(vb, 0);
207 int image_size = solo_image_size(solo_dev);
208
209 for (i = 0; i < image_size; i += 2) {
210 ((u8 *)p)[i] = 0x80;
211 ((u8 *)p)[i + 1] = 0x00;
212 }
213 error = 0;
214 } else {
215 fdma_addr = SOLO_DISP_EXT_ADDR + (solo_dev->old_write *
216 (SOLO_HW_BPL * solo_vlines(solo_dev)));
217
218 error = solo_p2m_dma_t(solo_dev, 0, addr, fdma_addr,
219 solo_bytesperline(solo_dev),
220 solo_vlines(solo_dev), SOLO_HW_BPL);
221 }
222
223 finish_buf:
224 if (!error) {
225 vb2_set_plane_payload(vb, 0,
226 solo_vlines(solo_dev) * solo_bytesperline(solo_dev));
227 vbuf->sequence = solo_dev->sequence++;
228 v4l2_get_timestamp(&vbuf->timestamp);
229 }
230
231 vb2_buffer_done(vb, error ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
232 }
233
234 static void solo_thread_try(struct solo_dev *solo_dev)
235 {
236 struct solo_vb2_buf *vb;
237
238 /* Only "break" from this loop if slock is held, otherwise
239 * just return. */
240 for (;;) {
241 unsigned int cur_write;
242
243 cur_write = SOLO_VI_STATUS0_PAGE(
244 solo_reg_read(solo_dev, SOLO_VI_STATUS0));
245 if (cur_write == solo_dev->old_write)
246 return;
247
248 spin_lock(&solo_dev->slock);
249
250 if (list_empty(&solo_dev->vidq_active))
251 break;
252
253 vb = list_first_entry(&solo_dev->vidq_active, struct solo_vb2_buf,
254 list);
255
256 solo_dev->old_write = cur_write;
257 list_del(&vb->list);
258
259 spin_unlock(&solo_dev->slock);
260
261 solo_fillbuf(solo_dev, &vb->vb.vb2_buf);
262 }
263
264 assert_spin_locked(&solo_dev->slock);
265 spin_unlock(&solo_dev->slock);
266 }
267
268 static int solo_thread(void *data)
269 {
270 struct solo_dev *solo_dev = data;
271 DECLARE_WAITQUEUE(wait, current);
272
273 set_freezable();
274 add_wait_queue(&solo_dev->disp_thread_wait, &wait);
275
276 for (;;) {
277 long timeout = schedule_timeout_interruptible(HZ);
278
279 if (timeout == -ERESTARTSYS || kthread_should_stop())
280 break;
281 solo_thread_try(solo_dev);
282 try_to_freeze();
283 }
284
285 remove_wait_queue(&solo_dev->disp_thread_wait, &wait);
286
287 return 0;
288 }
289
290 static int solo_start_thread(struct solo_dev *solo_dev)
291 {
292 int ret = 0;
293
294 solo_dev->kthread = kthread_run(solo_thread, solo_dev, SOLO6X10_NAME "_disp");
295
296 if (IS_ERR(solo_dev->kthread)) {
297 ret = PTR_ERR(solo_dev->kthread);
298 solo_dev->kthread = NULL;
299 return ret;
300 }
301 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
302
303 return ret;
304 }
305
306 static void solo_stop_thread(struct solo_dev *solo_dev)
307 {
308 if (!solo_dev->kthread)
309 return;
310
311 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
312 kthread_stop(solo_dev->kthread);
313 solo_dev->kthread = NULL;
314 }
315
316 static int solo_queue_setup(struct vb2_queue *q, const void *parg,
317 unsigned int *num_buffers, unsigned int *num_planes,
318 unsigned int sizes[], void *alloc_ctxs[])
319 {
320 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
321
322 sizes[0] = solo_image_size(solo_dev);
323 alloc_ctxs[0] = solo_dev->alloc_ctx;
324 *num_planes = 1;
325
326 if (*num_buffers < MIN_VID_BUFFERS)
327 *num_buffers = MIN_VID_BUFFERS;
328
329 return 0;
330 }
331
332 static int solo_start_streaming(struct vb2_queue *q, unsigned int count)
333 {
334 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
335
336 solo_dev->sequence = 0;
337 return solo_start_thread(solo_dev);
338 }
339
340 static void solo_stop_streaming(struct vb2_queue *q)
341 {
342 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
343
344 solo_stop_thread(solo_dev);
345 INIT_LIST_HEAD(&solo_dev->vidq_active);
346 }
347
348 static void solo_buf_queue(struct vb2_buffer *vb)
349 {
350 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
351 struct vb2_queue *vq = vb->vb2_queue;
352 struct solo_dev *solo_dev = vb2_get_drv_priv(vq);
353 struct solo_vb2_buf *solo_vb =
354 container_of(vbuf, struct solo_vb2_buf, vb);
355
356 spin_lock(&solo_dev->slock);
357 list_add_tail(&solo_vb->list, &solo_dev->vidq_active);
358 spin_unlock(&solo_dev->slock);
359 wake_up_interruptible(&solo_dev->disp_thread_wait);
360 }
361
362 static const struct vb2_ops solo_video_qops = {
363 .queue_setup = solo_queue_setup,
364 .buf_queue = solo_buf_queue,
365 .start_streaming = solo_start_streaming,
366 .stop_streaming = solo_stop_streaming,
367 .wait_prepare = vb2_ops_wait_prepare,
368 .wait_finish = vb2_ops_wait_finish,
369 };
370
371 static int solo_querycap(struct file *file, void *priv,
372 struct v4l2_capability *cap)
373 {
374 struct solo_dev *solo_dev = video_drvdata(file);
375
376 strcpy(cap->driver, SOLO6X10_NAME);
377 strcpy(cap->card, "Softlogic 6x10");
378 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
379 pci_name(solo_dev->pdev));
380 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
381 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
382 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
383 return 0;
384 }
385
386 static int solo_enum_ext_input(struct solo_dev *solo_dev,
387 struct v4l2_input *input)
388 {
389 static const char * const dispnames_1[] = { "4UP" };
390 static const char * const dispnames_2[] = { "4UP-1", "4UP-2" };
391 static const char * const dispnames_5[] = {
392 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
393 };
394 const char * const *dispnames;
395
396 if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
397 return -EINVAL;
398
399 if (solo_dev->nr_ext == 5)
400 dispnames = dispnames_5;
401 else if (solo_dev->nr_ext == 2)
402 dispnames = dispnames_2;
403 else
404 dispnames = dispnames_1;
405
406 snprintf(input->name, sizeof(input->name), "Multi %s",
407 dispnames[input->index - solo_dev->nr_chans]);
408
409 return 0;
410 }
411
412 static int solo_enum_input(struct file *file, void *priv,
413 struct v4l2_input *input)
414 {
415 struct solo_dev *solo_dev = video_drvdata(file);
416
417 if (input->index >= solo_dev->nr_chans) {
418 int ret = solo_enum_ext_input(solo_dev, input);
419
420 if (ret < 0)
421 return ret;
422 } else {
423 snprintf(input->name, sizeof(input->name), "Camera %d",
424 input->index + 1);
425
426 /* We can only check this for normal inputs */
427 if (!tw28_get_video_status(solo_dev, input->index))
428 input->status = V4L2_IN_ST_NO_SIGNAL;
429 }
430
431 input->type = V4L2_INPUT_TYPE_CAMERA;
432 input->std = solo_dev->vfd->tvnorms;
433 return 0;
434 }
435
436 static int solo_set_input(struct file *file, void *priv, unsigned int index)
437 {
438 struct solo_dev *solo_dev = video_drvdata(file);
439 int ret = solo_v4l2_set_ch(solo_dev, index);
440
441 if (!ret) {
442 while (erase_off(solo_dev))
443 /* Do nothing */;
444 }
445
446 return ret;
447 }
448
449 static int solo_get_input(struct file *file, void *priv, unsigned int *index)
450 {
451 struct solo_dev *solo_dev = video_drvdata(file);
452
453 *index = solo_dev->cur_disp_ch;
454
455 return 0;
456 }
457
458 static int solo_enum_fmt_cap(struct file *file, void *priv,
459 struct v4l2_fmtdesc *f)
460 {
461 if (f->index)
462 return -EINVAL;
463
464 f->pixelformat = V4L2_PIX_FMT_UYVY;
465 strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
466
467 return 0;
468 }
469
470 static int solo_try_fmt_cap(struct file *file, void *priv,
471 struct v4l2_format *f)
472 {
473 struct solo_dev *solo_dev = video_drvdata(file);
474 struct v4l2_pix_format *pix = &f->fmt.pix;
475 int image_size = solo_image_size(solo_dev);
476
477 if (pix->pixelformat != V4L2_PIX_FMT_UYVY)
478 return -EINVAL;
479
480 pix->width = solo_dev->video_hsize;
481 pix->height = solo_vlines(solo_dev);
482 pix->sizeimage = image_size;
483 pix->field = V4L2_FIELD_INTERLACED;
484 pix->pixelformat = V4L2_PIX_FMT_UYVY;
485 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
486 pix->priv = 0;
487 return 0;
488 }
489
490 static int solo_set_fmt_cap(struct file *file, void *priv,
491 struct v4l2_format *f)
492 {
493 struct solo_dev *solo_dev = video_drvdata(file);
494
495 if (vb2_is_busy(&solo_dev->vidq))
496 return -EBUSY;
497
498 /* For right now, if it doesn't match our running config,
499 * then fail */
500 return solo_try_fmt_cap(file, priv, f);
501 }
502
503 static int solo_get_fmt_cap(struct file *file, void *priv,
504 struct v4l2_format *f)
505 {
506 struct solo_dev *solo_dev = video_drvdata(file);
507 struct v4l2_pix_format *pix = &f->fmt.pix;
508
509 pix->width = solo_dev->video_hsize;
510 pix->height = solo_vlines(solo_dev);
511 pix->pixelformat = V4L2_PIX_FMT_UYVY;
512 pix->field = V4L2_FIELD_INTERLACED;
513 pix->sizeimage = solo_image_size(solo_dev);
514 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
515 pix->bytesperline = solo_bytesperline(solo_dev);
516 pix->priv = 0;
517
518 return 0;
519 }
520
521 static int solo_g_std(struct file *file, void *priv, v4l2_std_id *i)
522 {
523 struct solo_dev *solo_dev = video_drvdata(file);
524
525 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
526 *i = V4L2_STD_NTSC_M;
527 else
528 *i = V4L2_STD_PAL;
529 return 0;
530 }
531
532 int solo_set_video_type(struct solo_dev *solo_dev, bool is_50hz)
533 {
534 int i;
535
536 /* Make sure all video nodes are idle */
537 if (vb2_is_busy(&solo_dev->vidq))
538 return -EBUSY;
539 for (i = 0; i < solo_dev->nr_chans; i++)
540 if (vb2_is_busy(&solo_dev->v4l2_enc[i]->vidq))
541 return -EBUSY;
542 solo_dev->video_type = is_50hz ? SOLO_VO_FMT_TYPE_PAL :
543 SOLO_VO_FMT_TYPE_NTSC;
544 /* Reconfigure for the new standard */
545 solo_disp_init(solo_dev);
546 solo_enc_init(solo_dev);
547 solo_tw28_init(solo_dev);
548 for (i = 0; i < solo_dev->nr_chans; i++)
549 solo_update_mode(solo_dev->v4l2_enc[i]);
550 return solo_v4l2_set_ch(solo_dev, solo_dev->cur_disp_ch);
551 }
552
553 static int solo_s_std(struct file *file, void *priv, v4l2_std_id std)
554 {
555 struct solo_dev *solo_dev = video_drvdata(file);
556
557 return solo_set_video_type(solo_dev, std & V4L2_STD_625_50);
558 }
559
560 static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
561 {
562 struct solo_dev *solo_dev =
563 container_of(ctrl->handler, struct solo_dev, disp_hdl);
564
565 switch (ctrl->id) {
566 case V4L2_CID_MOTION_TRACE:
567 if (ctrl->val) {
568 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
569 SOLO_VI_MOTION_Y_ADD |
570 SOLO_VI_MOTION_Y_VALUE(0x20) |
571 SOLO_VI_MOTION_CB_VALUE(0x10) |
572 SOLO_VI_MOTION_CR_VALUE(0x10));
573 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
574 SOLO_VI_MOTION_CR_ADD |
575 SOLO_VI_MOTION_Y_VALUE(0x10) |
576 SOLO_VI_MOTION_CB_VALUE(0x80) |
577 SOLO_VI_MOTION_CR_VALUE(0x10));
578 } else {
579 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
580 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
581 }
582 return 0;
583 default:
584 break;
585 }
586 return -EINVAL;
587 }
588
589 static const struct v4l2_file_operations solo_v4l2_fops = {
590 .owner = THIS_MODULE,
591 .open = v4l2_fh_open,
592 .release = vb2_fop_release,
593 .read = vb2_fop_read,
594 .poll = vb2_fop_poll,
595 .mmap = vb2_fop_mmap,
596 .unlocked_ioctl = video_ioctl2,
597 };
598
599 static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
600 .vidioc_querycap = solo_querycap,
601 .vidioc_s_std = solo_s_std,
602 .vidioc_g_std = solo_g_std,
603 /* Input callbacks */
604 .vidioc_enum_input = solo_enum_input,
605 .vidioc_s_input = solo_set_input,
606 .vidioc_g_input = solo_get_input,
607 /* Video capture format callbacks */
608 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,
609 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap,
610 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap,
611 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap,
612 /* Streaming I/O */
613 .vidioc_reqbufs = vb2_ioctl_reqbufs,
614 .vidioc_querybuf = vb2_ioctl_querybuf,
615 .vidioc_qbuf = vb2_ioctl_qbuf,
616 .vidioc_dqbuf = vb2_ioctl_dqbuf,
617 .vidioc_streamon = vb2_ioctl_streamon,
618 .vidioc_streamoff = vb2_ioctl_streamoff,
619 /* Logging and events */
620 .vidioc_log_status = v4l2_ctrl_log_status,
621 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
622 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
623 };
624
625 static struct video_device solo_v4l2_template = {
626 .name = SOLO6X10_NAME,
627 .fops = &solo_v4l2_fops,
628 .ioctl_ops = &solo_v4l2_ioctl_ops,
629 .minor = -1,
630 .release = video_device_release,
631 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL,
632 };
633
634 static const struct v4l2_ctrl_ops solo_ctrl_ops = {
635 .s_ctrl = solo_s_ctrl,
636 };
637
638 static const struct v4l2_ctrl_config solo_motion_trace_ctrl = {
639 .ops = &solo_ctrl_ops,
640 .id = V4L2_CID_MOTION_TRACE,
641 .name = "Motion Detection Trace",
642 .type = V4L2_CTRL_TYPE_BOOLEAN,
643 .max = 1,
644 .step = 1,
645 };
646
647 int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
648 {
649 int ret;
650 int i;
651
652 init_waitqueue_head(&solo_dev->disp_thread_wait);
653 spin_lock_init(&solo_dev->slock);
654 mutex_init(&solo_dev->lock);
655 INIT_LIST_HEAD(&solo_dev->vidq_active);
656
657 solo_dev->vfd = video_device_alloc();
658 if (!solo_dev->vfd)
659 return -ENOMEM;
660
661 *solo_dev->vfd = solo_v4l2_template;
662 solo_dev->vfd->v4l2_dev = &solo_dev->v4l2_dev;
663 solo_dev->vfd->queue = &solo_dev->vidq;
664 solo_dev->vfd->lock = &solo_dev->lock;
665 v4l2_ctrl_handler_init(&solo_dev->disp_hdl, 1);
666 v4l2_ctrl_new_custom(&solo_dev->disp_hdl, &solo_motion_trace_ctrl, NULL);
667 if (solo_dev->disp_hdl.error) {
668 ret = solo_dev->disp_hdl.error;
669 goto fail;
670 }
671 solo_dev->vfd->ctrl_handler = &solo_dev->disp_hdl;
672
673 video_set_drvdata(solo_dev->vfd, solo_dev);
674
675 solo_dev->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
676 solo_dev->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
677 solo_dev->vidq.ops = &solo_video_qops;
678 solo_dev->vidq.mem_ops = &vb2_dma_contig_memops;
679 solo_dev->vidq.drv_priv = solo_dev;
680 solo_dev->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
681 solo_dev->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM;
682 solo_dev->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
683 solo_dev->vidq.lock = &solo_dev->lock;
684 ret = vb2_queue_init(&solo_dev->vidq);
685 if (ret < 0)
686 goto fail;
687
688 solo_dev->alloc_ctx = vb2_dma_contig_init_ctx(&solo_dev->pdev->dev);
689 if (IS_ERR(solo_dev->alloc_ctx)) {
690 dev_err(&solo_dev->pdev->dev, "Can't allocate buffer context");
691 return PTR_ERR(solo_dev->alloc_ctx);
692 }
693
694 /* Cycle all the channels and clear */
695 for (i = 0; i < solo_dev->nr_chans; i++) {
696 solo_v4l2_set_ch(solo_dev, i);
697 while (erase_off(solo_dev))
698 /* Do nothing */;
699 }
700
701 /* Set the default display channel */
702 solo_v4l2_set_ch(solo_dev, 0);
703 while (erase_off(solo_dev))
704 /* Do nothing */;
705
706 ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, nr);
707 if (ret < 0)
708 goto fail;
709
710 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
711 SOLO6X10_NAME, solo_dev->vfd->num);
712
713 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
714 "%d inputs (%d extended)\n", solo_dev->vfd->num,
715 solo_dev->nr_chans, solo_dev->nr_ext);
716
717 return 0;
718
719 fail:
720 video_device_release(solo_dev->vfd);
721 vb2_dma_contig_cleanup_ctx(solo_dev->alloc_ctx);
722 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);
723 solo_dev->vfd = NULL;
724 return ret;
725 }
726
727 void solo_v4l2_exit(struct solo_dev *solo_dev)
728 {
729 if (solo_dev->vfd == NULL)
730 return;
731
732 video_unregister_device(solo_dev->vfd);
733 vb2_dma_contig_cleanup_ctx(solo_dev->alloc_ctx);
734 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);
735 solo_dev->vfd = NULL;
736 }
Linux with added FPC-III support