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