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25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/kthread.h>
28#include <linux/freezer.h>
29
30#include <media/v4l2-ioctl.h>
31#include <media/v4l2-common.h>
32#include <media/v4l2-event.h>
33#include <media/videobuf2-dma-contig.h>
34
35#include "solo6x10.h"
36#include "solo6x10-tw28.h"
37
38
39#define SOLO_HW_BPL 2048
40#define solo_vlines(__solo) (__solo->video_vsize * 2)
41#define solo_image_size(__solo) (solo_bytesperline(__solo) * \
42 solo_vlines(__solo))
43#define solo_bytesperline(__solo) (__solo->video_hsize * 2)
44
45#define MIN_VID_BUFFERS 2
46
47static inline void erase_on(struct solo_dev *solo_dev)
48{
49 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);
50 solo_dev->erasing = 1;
51 solo_dev->frame_blank = 0;
52}
53
54static inline int erase_off(struct solo_dev *solo_dev)
55{
56 if (!solo_dev->erasing)
57 return 0;
58
59
60 if (!solo_dev->frame_blank)
61 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);
62
63 if (solo_dev->frame_blank++ >= 8)
64 solo_dev->erasing = 0;
65
66 return 1;
67}
68
69void solo_video_in_isr(struct solo_dev *solo_dev)
70{
71 wake_up_interruptible_all(&solo_dev->disp_thread_wait);
72}
73
74static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,
75 int sx, int sy, int ex, int ey, int scale)
76{
77 if (ch >= solo_dev->nr_chans)
78 return;
79
80
81 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),
82 SOLO_VI_WIN_CHANNEL(ch) |
83 SOLO_VI_WIN_SX(sx) |
84 SOLO_VI_WIN_EX(ex) |
85 SOLO_VI_WIN_SCALE(scale));
86
87 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),
88 SOLO_VI_WIN_SY(sy) |
89 SOLO_VI_WIN_EY(ey));
90}
91
92static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)
93{
94 u8 ch = idx * 4;
95
96 if (ch >= solo_dev->nr_chans)
97 return -EINVAL;
98
99 if (!on) {
100 u8 i;
101 for (i = ch; i < ch + 4; i++)
102 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
103 solo_vlines(solo_dev),
104 solo_dev->video_hsize,
105 solo_vlines(solo_dev), 0);
106 return 0;
107 }
108
109
110 solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,
111 solo_vlines(solo_dev) / 2, 3);
112 solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,
113 solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);
114
115 solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,
116 solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);
117 solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,
118 solo_vlines(solo_dev) / 2, solo_dev->video_hsize,
119 solo_vlines(solo_dev), 3);
120
121 return 0;
122}
123
124static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)
125{
126 int sy, ysize, hsize, i;
127
128 if (!on) {
129 for (i = 0; i < 16; i++)
130 solo_win_setup(solo_dev, i, solo_dev->video_hsize,
131 solo_vlines(solo_dev),
132 solo_dev->video_hsize,
133 solo_vlines(solo_dev), 0);
134 return 0;
135 }
136
137 ysize = solo_vlines(solo_dev) / 4;
138 hsize = solo_dev->video_hsize / 4;
139
140 for (sy = 0, i = 0; i < 4; i++, sy += ysize) {
141 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,
142 sy + ysize, 5);
143 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,
144 hsize * 2, sy + ysize, 5);
145 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,
146 hsize * 3, sy + ysize, 5);
147 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,
148 solo_dev->video_hsize, sy + ysize, 5);
149 }
150
151 return 0;
152}
153
154static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)
155{
156 u8 ext_ch;
157
158 if (ch < solo_dev->nr_chans) {
159 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,
160 on ? 0 : solo_vlines(solo_dev),
161 solo_dev->video_hsize, solo_vlines(solo_dev),
162 on ? 1 : 0);
163 return 0;
164 }
165
166 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
167 return -EINVAL;
168
169 ext_ch = ch - solo_dev->nr_chans;
170
171
172 if (ext_ch < 4)
173 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);
174
175
176 return solo_v4l2_ch_ext_16up(solo_dev, on);
177}
178
179static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)
180{
181 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)
182 return -EINVAL;
183
184 erase_on(solo_dev);
185
186 solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);
187 solo_v4l2_ch(solo_dev, ch, 1);
188
189 solo_dev->cur_disp_ch = ch;
190
191 return 0;
192}
193
194static void solo_fillbuf(struct solo_dev *solo_dev,
195 struct vb2_buffer *vb)
196{
197 dma_addr_t vbuf;
198 unsigned int fdma_addr;
199 int error = -1;
200 int i;
201
202 vbuf = vb2_dma_contig_plane_dma_addr(vb, 0);
203 if (!vbuf)
204 goto finish_buf;
205
206 if (erase_off(solo_dev)) {
207 void *p = vb2_plane_vaddr(vb, 0);
208 int image_size = solo_image_size(solo_dev);
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, vbuf, fdma_addr,
219 solo_bytesperline(solo_dev),
220 solo_vlines(solo_dev), SOLO_HW_BPL);
221 }
222
223finish_buf:
224 if (!error) {
225 vb2_set_plane_payload(vb, 0,
226 solo_vlines(solo_dev) * solo_bytesperline(solo_dev));
227 vb->v4l2_buf.sequence = solo_dev->sequence++;
228 v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
229 }
230
231 vb2_buffer_done(vb, error ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
232}
233
234static void solo_thread_try(struct solo_dev *solo_dev)
235{
236 struct solo_vb2_buf *vb;
237
238
239
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);
262 }
263
264 assert_spin_locked(&solo_dev->slock);
265 spin_unlock(&solo_dev->slock);
266}
267
268static 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 if (timeout == -ERESTARTSYS || kthread_should_stop())
279 break;
280 solo_thread_try(solo_dev);
281 try_to_freeze();
282 }
283
284 remove_wait_queue(&solo_dev->disp_thread_wait, &wait);
285
286 return 0;
287}
288
289static int solo_start_thread(struct solo_dev *solo_dev)
290{
291 int ret = 0;
292
293 solo_dev->kthread = kthread_run(solo_thread, solo_dev, SOLO6X10_NAME "_disp");
294
295 if (IS_ERR(solo_dev->kthread)) {
296 ret = PTR_ERR(solo_dev->kthread);
297 solo_dev->kthread = NULL;
298 return ret;
299 }
300 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);
301
302 return ret;
303}
304
305static void solo_stop_thread(struct solo_dev *solo_dev)
306{
307 if (!solo_dev->kthread)
308 return;
309
310 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);
311 kthread_stop(solo_dev->kthread);
312 solo_dev->kthread = NULL;
313}
314
315static int solo_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
316 unsigned int *num_buffers, unsigned int *num_planes,
317 unsigned int sizes[], void *alloc_ctxs[])
318{
319 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
320
321 sizes[0] = solo_image_size(solo_dev);
322 alloc_ctxs[0] = solo_dev->alloc_ctx;
323 *num_planes = 1;
324
325 if (*num_buffers < MIN_VID_BUFFERS)
326 *num_buffers = MIN_VID_BUFFERS;
327
328 return 0;
329}
330
331static int solo_start_streaming(struct vb2_queue *q, unsigned int count)
332{
333 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
334
335 solo_dev->sequence = 0;
336 return solo_start_thread(solo_dev);
337}
338
339static int solo_stop_streaming(struct vb2_queue *q)
340{
341 struct solo_dev *solo_dev = vb2_get_drv_priv(q);
342
343 solo_stop_thread(solo_dev);
344 INIT_LIST_HEAD(&solo_dev->vidq_active);
345 return 0;
346}
347
348static void solo_buf_queue(struct vb2_buffer *vb)
349{
350 struct vb2_queue *vq = vb->vb2_queue;
351 struct solo_dev *solo_dev = vb2_get_drv_priv(vq);
352 struct solo_vb2_buf *solo_vb =
353 container_of(vb, struct solo_vb2_buf, vb);
354
355 spin_lock(&solo_dev->slock);
356 list_add_tail(&solo_vb->list, &solo_dev->vidq_active);
357 spin_unlock(&solo_dev->slock);
358 wake_up_interruptible(&solo_dev->disp_thread_wait);
359}
360
361static const struct vb2_ops solo_video_qops = {
362 .queue_setup = solo_queue_setup,
363 .buf_queue = solo_buf_queue,
364 .start_streaming = solo_start_streaming,
365 .stop_streaming = solo_stop_streaming,
366 .wait_prepare = vb2_ops_wait_prepare,
367 .wait_finish = vb2_ops_wait_finish,
368};
369
370static int solo_querycap(struct file *file, void *priv,
371 struct v4l2_capability *cap)
372{
373 struct solo_dev *solo_dev = video_drvdata(file);
374
375 strcpy(cap->driver, SOLO6X10_NAME);
376 strcpy(cap->card, "Softlogic 6x10");
377 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
378 pci_name(solo_dev->pdev));
379 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
380 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
381 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
382 return 0;
383}
384
385static int solo_enum_ext_input(struct solo_dev *solo_dev,
386 struct v4l2_input *input)
387{
388 static const char * const dispnames_1[] = { "4UP" };
389 static const char * const dispnames_2[] = { "4UP-1", "4UP-2" };
390 static const char * const dispnames_5[] = {
391 "4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"
392 };
393 const char * const *dispnames;
394
395 if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))
396 return -EINVAL;
397
398 if (solo_dev->nr_ext == 5)
399 dispnames = dispnames_5;
400 else if (solo_dev->nr_ext == 2)
401 dispnames = dispnames_2;
402 else
403 dispnames = dispnames_1;
404
405 snprintf(input->name, sizeof(input->name), "Multi %s",
406 dispnames[input->index - solo_dev->nr_chans]);
407
408 return 0;
409}
410
411static int solo_enum_input(struct file *file, void *priv,
412 struct v4l2_input *input)
413{
414 struct solo_dev *solo_dev = video_drvdata(file);
415
416 if (input->index >= solo_dev->nr_chans) {
417 int ret = solo_enum_ext_input(solo_dev, input);
418 if (ret < 0)
419 return ret;
420 } else {
421 snprintf(input->name, sizeof(input->name), "Camera %d",
422 input->index + 1);
423
424
425 if (!tw28_get_video_status(solo_dev, input->index))
426 input->status = V4L2_IN_ST_NO_SIGNAL;
427 }
428
429 input->type = V4L2_INPUT_TYPE_CAMERA;
430 input->std = solo_dev->vfd->tvnorms;
431 return 0;
432}
433
434static int solo_set_input(struct file *file, void *priv, unsigned int index)
435{
436 struct solo_dev *solo_dev = video_drvdata(file);
437 int ret = solo_v4l2_set_ch(solo_dev, index);
438
439 if (!ret) {
440 while (erase_off(solo_dev))
441 ;
442 }
443
444 return ret;
445}
446
447static int solo_get_input(struct file *file, void *priv, unsigned int *index)
448{
449 struct solo_dev *solo_dev = video_drvdata(file);
450
451 *index = solo_dev->cur_disp_ch;
452
453 return 0;
454}
455
456static int solo_enum_fmt_cap(struct file *file, void *priv,
457 struct v4l2_fmtdesc *f)
458{
459 if (f->index)
460 return -EINVAL;
461
462 f->pixelformat = V4L2_PIX_FMT_UYVY;
463 strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));
464
465 return 0;
466}
467
468static int solo_try_fmt_cap(struct file *file, void *priv,
469 struct v4l2_format *f)
470{
471 struct solo_dev *solo_dev = video_drvdata(file);
472 struct v4l2_pix_format *pix = &f->fmt.pix;
473 int image_size = solo_image_size(solo_dev);
474
475 if (pix->pixelformat != V4L2_PIX_FMT_UYVY)
476 return -EINVAL;
477
478 pix->width = solo_dev->video_hsize;
479 pix->height = solo_vlines(solo_dev);
480 pix->sizeimage = image_size;
481 pix->field = V4L2_FIELD_INTERLACED;
482 pix->pixelformat = V4L2_PIX_FMT_UYVY;
483 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
484 pix->priv = 0;
485 return 0;
486}
487
488static int solo_set_fmt_cap(struct file *file, void *priv,
489 struct v4l2_format *f)
490{
491 struct solo_dev *solo_dev = video_drvdata(file);
492
493 if (vb2_is_busy(&solo_dev->vidq))
494 return -EBUSY;
495
496
497
498 return solo_try_fmt_cap(file, priv, f);
499}
500
501static int solo_get_fmt_cap(struct file *file, void *priv,
502 struct v4l2_format *f)
503{
504 struct solo_dev *solo_dev = video_drvdata(file);
505 struct v4l2_pix_format *pix = &f->fmt.pix;
506
507 pix->width = solo_dev->video_hsize;
508 pix->height = solo_vlines(solo_dev);
509 pix->pixelformat = V4L2_PIX_FMT_UYVY;
510 pix->field = V4L2_FIELD_INTERLACED;
511 pix->sizeimage = solo_image_size(solo_dev);
512 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
513 pix->bytesperline = solo_bytesperline(solo_dev);
514 pix->priv = 0;
515
516 return 0;
517}
518
519static int solo_g_std(struct file *file, void *priv, v4l2_std_id *i)
520{
521 struct solo_dev *solo_dev = video_drvdata(file);
522
523 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
524 *i = V4L2_STD_NTSC_M;
525 else
526 *i = V4L2_STD_PAL;
527 return 0;
528}
529
530int solo_set_video_type(struct solo_dev *solo_dev, bool type)
531{
532 int i;
533
534
535 if (vb2_is_busy(&solo_dev->vidq))
536 return -EBUSY;
537 for (i = 0; i < solo_dev->nr_chans; i++)
538 if (vb2_is_busy(&solo_dev->v4l2_enc[i]->vidq))
539 return -EBUSY;
540 solo_dev->video_type = type;
541
542 solo_disp_init(solo_dev);
543 solo_enc_init(solo_dev);
544 solo_tw28_init(solo_dev);
545 for (i = 0; i < solo_dev->nr_chans; i++)
546 solo_update_mode(solo_dev->v4l2_enc[i]);
547 return solo_v4l2_set_ch(solo_dev, solo_dev->cur_disp_ch);
548}
549
550static int solo_s_std(struct file *file, void *priv, v4l2_std_id std)
551{
552 struct solo_dev *solo_dev = video_drvdata(file);
553
554 return solo_set_video_type(solo_dev, std & V4L2_STD_PAL);
555}
556
557static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
558{
559 struct solo_dev *solo_dev =
560 container_of(ctrl->handler, struct solo_dev, disp_hdl);
561
562 switch (ctrl->id) {
563 case V4L2_CID_MOTION_TRACE:
564 if (ctrl->val) {
565 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,
566 SOLO_VI_MOTION_Y_ADD |
567 SOLO_VI_MOTION_Y_VALUE(0x20) |
568 SOLO_VI_MOTION_CB_VALUE(0x10) |
569 SOLO_VI_MOTION_CR_VALUE(0x10));
570 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,
571 SOLO_VI_MOTION_CR_ADD |
572 SOLO_VI_MOTION_Y_VALUE(0x10) |
573 SOLO_VI_MOTION_CB_VALUE(0x80) |
574 SOLO_VI_MOTION_CR_VALUE(0x10));
575 } else {
576 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);
577 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);
578 }
579 return 0;
580 default:
581 break;
582 }
583 return -EINVAL;
584}
585
586static const struct v4l2_file_operations solo_v4l2_fops = {
587 .owner = THIS_MODULE,
588 .open = v4l2_fh_open,
589 .release = vb2_fop_release,
590 .read = vb2_fop_read,
591 .poll = vb2_fop_poll,
592 .mmap = vb2_fop_mmap,
593 .unlocked_ioctl = video_ioctl2,
594};
595
596static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {
597 .vidioc_querycap = solo_querycap,
598 .vidioc_s_std = solo_s_std,
599 .vidioc_g_std = solo_g_std,
600
601 .vidioc_enum_input = solo_enum_input,
602 .vidioc_s_input = solo_set_input,
603 .vidioc_g_input = solo_get_input,
604
605 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,
606 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap,
607 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap,
608 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap,
609
610 .vidioc_reqbufs = vb2_ioctl_reqbufs,
611 .vidioc_querybuf = vb2_ioctl_querybuf,
612 .vidioc_qbuf = vb2_ioctl_qbuf,
613 .vidioc_dqbuf = vb2_ioctl_dqbuf,
614 .vidioc_streamon = vb2_ioctl_streamon,
615 .vidioc_streamoff = vb2_ioctl_streamoff,
616
617 .vidioc_log_status = v4l2_ctrl_log_status,
618 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
619 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
620};
621
622static struct video_device solo_v4l2_template = {
623 .name = SOLO6X10_NAME,
624 .fops = &solo_v4l2_fops,
625 .ioctl_ops = &solo_v4l2_ioctl_ops,
626 .minor = -1,
627 .release = video_device_release,
628 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL,
629};
630
631static const struct v4l2_ctrl_ops solo_ctrl_ops = {
632 .s_ctrl = solo_s_ctrl,
633};
634
635static const struct v4l2_ctrl_config solo_motion_trace_ctrl = {
636 .ops = &solo_ctrl_ops,
637 .id = V4L2_CID_MOTION_TRACE,
638 .name = "Motion Detection Trace",
639 .type = V4L2_CTRL_TYPE_BOOLEAN,
640 .max = 1,
641 .step = 1,
642};
643
644int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
645{
646 int ret;
647 int i;
648
649 init_waitqueue_head(&solo_dev->disp_thread_wait);
650 spin_lock_init(&solo_dev->slock);
651 mutex_init(&solo_dev->lock);
652 INIT_LIST_HEAD(&solo_dev->vidq_active);
653
654 solo_dev->vfd = video_device_alloc();
655 if (!solo_dev->vfd)
656 return -ENOMEM;
657
658 *solo_dev->vfd = solo_v4l2_template;
659 solo_dev->vfd->v4l2_dev = &solo_dev->v4l2_dev;
660 solo_dev->vfd->queue = &solo_dev->vidq;
661 solo_dev->vfd->lock = &solo_dev->lock;
662 v4l2_ctrl_handler_init(&solo_dev->disp_hdl, 1);
663 v4l2_ctrl_new_custom(&solo_dev->disp_hdl, &solo_motion_trace_ctrl, NULL);
664 if (solo_dev->disp_hdl.error) {
665 ret = solo_dev->disp_hdl.error;
666 goto fail;
667 }
668 solo_dev->vfd->ctrl_handler = &solo_dev->disp_hdl;
669 set_bit(V4L2_FL_USE_FH_PRIO, &solo_dev->vfd->flags);
670
671 video_set_drvdata(solo_dev->vfd, solo_dev);
672
673 solo_dev->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
674 solo_dev->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
675 solo_dev->vidq.ops = &solo_video_qops;
676 solo_dev->vidq.mem_ops = &vb2_dma_contig_memops;
677 solo_dev->vidq.drv_priv = solo_dev;
678 solo_dev->vidq.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
679 solo_dev->vidq.gfp_flags = __GFP_DMA32;
680 solo_dev->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
681 solo_dev->vidq.lock = &solo_dev->lock;
682 ret = vb2_queue_init(&solo_dev->vidq);
683 if (ret < 0)
684 goto fail;
685
686 solo_dev->alloc_ctx = vb2_dma_contig_init_ctx(&solo_dev->pdev->dev);
687 if (IS_ERR(solo_dev->alloc_ctx)) {
688 dev_err(&solo_dev->pdev->dev, "Can't allocate buffer context");
689 return PTR_ERR(solo_dev->alloc_ctx);
690 }
691
692
693 for (i = 0; i < solo_dev->nr_chans; i++) {
694 solo_v4l2_set_ch(solo_dev, i);
695 while (erase_off(solo_dev))
696 ;
697 }
698
699
700 solo_v4l2_set_ch(solo_dev, 0);
701 while (erase_off(solo_dev))
702 ;
703
704 ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, nr);
705 if (ret < 0)
706 goto fail;
707
708 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",
709 SOLO6X10_NAME, solo_dev->vfd->num);
710
711 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with "
712 "%d inputs (%d extended)\n", solo_dev->vfd->num,
713 solo_dev->nr_chans, solo_dev->nr_ext);
714
715 return 0;
716
717fail:
718 video_device_release(solo_dev->vfd);
719 vb2_dma_contig_cleanup_ctx(solo_dev->alloc_ctx);
720 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);
721 solo_dev->vfd = NULL;
722 return ret;
723}
724
725void solo_v4l2_exit(struct solo_dev *solo_dev)
726{
727 if (solo_dev->vfd == NULL)
728 return;
729
730 video_unregister_device(solo_dev->vfd);
731 vb2_dma_contig_cleanup_ctx(solo_dev->alloc_ctx);
732 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);
733 solo_dev->vfd = NULL;
734}
735
