This source file includes following definitions.
- saa7146_format_by_fourcc
- saa7146_start_preview
- saa7146_stop_preview
- saa7146_pgtable_build
- video_begin
- video_end
- vidioc_querycap
- vidioc_g_fbuf
- vidioc_s_fbuf
- vidioc_enum_fmt_vid_cap
- saa7146_s_ctrl
- vidioc_g_parm
- vidioc_g_fmt_vid_cap
- vidioc_g_fmt_vid_overlay
- vidioc_g_fmt_vbi_cap
- vidioc_try_fmt_vid_cap
- vidioc_try_fmt_vid_overlay
- vidioc_s_fmt_vid_cap
- vidioc_s_fmt_vid_overlay
- vidioc_g_std
- vidioc_s_std
- vidioc_overlay
- vidioc_reqbufs
- vidioc_querybuf
- vidioc_qbuf
- vidioc_dqbuf
- vidioc_streamon
- vidioc_streamoff
- buffer_activate
- release_all_pagetables
- buffer_prepare
- buffer_setup
- buffer_queue
- buffer_release
- video_init
- video_open
- video_close
- video_irq_done
- video_read
1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
2
3 #include <media/drv-intf/saa7146_vv.h>
4 #include <media/v4l2-event.h>
5 #include <media/v4l2-ctrls.h>
6 #include <linux/module.h>
7 #include <linux/kernel.h>
8
9 static int max_memory = 32;
10
11 module_param(max_memory, int, 0644);
12 MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)");
13
14 #define IS_CAPTURE_ACTIVE(fh) \
15 (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh))
16
17 #define IS_OVERLAY_ACTIVE(fh) \
18 (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh))
19
20
21 static struct saa7146_format formats[] = {
22 {
23 .pixelformat = V4L2_PIX_FMT_RGB332,
24 .trans = RGB08_COMPOSED,
25 .depth = 8,
26 .flags = 0,
27 }, {
28 .pixelformat = V4L2_PIX_FMT_RGB565,
29 .trans = RGB16_COMPOSED,
30 .depth = 16,
31 .flags = 0,
32 }, {
33 .pixelformat = V4L2_PIX_FMT_BGR24,
34 .trans = RGB24_COMPOSED,
35 .depth = 24,
36 .flags = 0,
37 }, {
38 .pixelformat = V4L2_PIX_FMT_BGR32,
39 .trans = RGB32_COMPOSED,
40 .depth = 32,
41 .flags = 0,
42 }, {
43 .pixelformat = V4L2_PIX_FMT_RGB32,
44 .trans = RGB32_COMPOSED,
45 .depth = 32,
46 .flags = 0,
47 .swap = 0x2,
48 }, {
49 .pixelformat = V4L2_PIX_FMT_GREY,
50 .trans = Y8,
51 .depth = 8,
52 .flags = 0,
53 }, {
54 .pixelformat = V4L2_PIX_FMT_YUV422P,
55 .trans = YUV422_DECOMPOSED,
56 .depth = 16,
57 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
58 }, {
59 .pixelformat = V4L2_PIX_FMT_YVU420,
60 .trans = YUV420_DECOMPOSED,
61 .depth = 12,
62 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
63 }, {
64 .pixelformat = V4L2_PIX_FMT_YUV420,
65 .trans = YUV420_DECOMPOSED,
66 .depth = 12,
67 .flags = FORMAT_IS_PLANAR,
68 }, {
69 .pixelformat = V4L2_PIX_FMT_UYVY,
70 .trans = YUV422_COMPOSED,
71 .depth = 16,
72 .flags = 0,
73 }
74 };
75
76
77
78
79
80 struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc)
81 {
82 int i;
83
84 for (i = 0; i < ARRAY_SIZE(formats); i++) {
85 if (formats[i].pixelformat == fourcc) {
86 return formats+i;
87 }
88 }
89
90 DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc);
91 return NULL;
92 }
93
94 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f);
95
96 int saa7146_start_preview(struct saa7146_fh *fh)
97 {
98 struct saa7146_dev *dev = fh->dev;
99 struct saa7146_vv *vv = dev->vv_data;
100 struct v4l2_format fmt;
101 int ret = 0, err = 0;
102
103 DEB_EE("dev:%p, fh:%p\n", dev, fh);
104
105
106 if (vv->ov.fh == NULL) {
107 DEB_D("no overlay data available. try S_FMT first.\n");
108 return -EAGAIN;
109 }
110
111
112 if (IS_CAPTURE_ACTIVE(fh) != 0) {
113 DEB_D("streaming capture is active\n");
114 return -EBUSY;
115 }
116
117
118 if (IS_OVERLAY_ACTIVE(fh) != 0) {
119 if (vv->video_fh == fh) {
120 DEB_D("overlay is already active\n");
121 return 0;
122 }
123 DEB_D("overlay is already active in another open\n");
124 return -EBUSY;
125 }
126
127 if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) {
128 DEB_D("cannot get necessary overlay resources\n");
129 return -EBUSY;
130 }
131
132 fmt.fmt.win = vv->ov.win;
133 err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt);
134 if (0 != err) {
135 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
136 return -EBUSY;
137 }
138 vv->ov.win = fmt.fmt.win;
139
140 DEB_D("%dx%d+%d+%d 0x%08x field=%s\n",
141 vv->ov.win.w.width, vv->ov.win.w.height,
142 vv->ov.win.w.left, vv->ov.win.w.top,
143 vv->ov_fmt->pixelformat, v4l2_field_names[vv->ov.win.field]);
144
145 if (0 != (ret = saa7146_enable_overlay(fh))) {
146 DEB_D("enabling overlay failed: %d\n", ret);
147 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
148 return ret;
149 }
150
151 vv->video_status = STATUS_OVERLAY;
152 vv->video_fh = fh;
153
154 return 0;
155 }
156 EXPORT_SYMBOL_GPL(saa7146_start_preview);
157
158 int saa7146_stop_preview(struct saa7146_fh *fh)
159 {
160 struct saa7146_dev *dev = fh->dev;
161 struct saa7146_vv *vv = dev->vv_data;
162
163 DEB_EE("dev:%p, fh:%p\n", dev, fh);
164
165
166 if (IS_CAPTURE_ACTIVE(fh) != 0) {
167 DEB_D("streaming capture is active\n");
168 return -EBUSY;
169 }
170
171
172 if ((vv->video_status & STATUS_OVERLAY) == 0) {
173 DEB_D("no active overlay\n");
174 return 0;
175 }
176
177 if (vv->video_fh != fh) {
178 DEB_D("overlay is active, but in another open\n");
179 return -EBUSY;
180 }
181
182 vv->video_status = 0;
183 vv->video_fh = NULL;
184
185 saa7146_disable_overlay(fh);
186
187 saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
188
189 return 0;
190 }
191 EXPORT_SYMBOL_GPL(saa7146_stop_preview);
192
193
194
195
196 static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf)
197 {
198 struct pci_dev *pci = dev->pci;
199 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
200 struct scatterlist *list = dma->sglist;
201 int length = dma->sglen;
202 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
203
204 DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length);
205
206 if( 0 != IS_PLANAR(sfmt->trans)) {
207 struct saa7146_pgtable *pt1 = &buf->pt[0];
208 struct saa7146_pgtable *pt2 = &buf->pt[1];
209 struct saa7146_pgtable *pt3 = &buf->pt[2];
210 __le32 *ptr1, *ptr2, *ptr3;
211 __le32 fill;
212
213 int size = buf->fmt->width*buf->fmt->height;
214 int i,p,m1,m2,m3,o1,o2;
215
216 switch( sfmt->depth ) {
217 case 12: {
218
219 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
220 m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1;
221 m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
222 o1 = size%PAGE_SIZE;
223 o2 = (size+(size/4))%PAGE_SIZE;
224 DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
225 size, m1, m2, m3, o1, o2);
226 break;
227 }
228 case 16: {
229
230 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
231 m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
232 m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1;
233 o1 = size%PAGE_SIZE;
234 o2 = (size+(size/2))%PAGE_SIZE;
235 DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
236 size, m1, m2, m3, o1, o2);
237 break;
238 }
239 default: {
240 return -1;
241 }
242 }
243
244 ptr1 = pt1->cpu;
245 ptr2 = pt2->cpu;
246 ptr3 = pt3->cpu;
247
248
249 for (i = 0; i < length; i++, list++) {
250 for (p = 0; p * 4096 < list->length; p++, ptr1++) {
251 *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset);
252 }
253 }
254
255
256
257
258
259
260
261
262
263 pt1->offset = dma->sglist->offset;
264 pt2->offset = pt1->offset+o1;
265 pt3->offset = pt1->offset+o2;
266
267
268 ptr1 = pt1->cpu;
269 for(i = m1; i <= m2 ; i++, ptr2++) {
270 *ptr2 = ptr1[i];
271 }
272 fill = *(ptr2-1);
273 for(;i<1024;i++,ptr2++) {
274 *ptr2 = fill;
275 }
276
277 ptr1 = pt1->cpu;
278 for(i = m2; i <= m3; i++,ptr3++) {
279 *ptr3 = ptr1[i];
280 }
281 fill = *(ptr3-1);
282 for(;i<1024;i++,ptr3++) {
283 *ptr3 = fill;
284 }
285
286 ptr1 = pt1->cpu+m1;
287 fill = pt1->cpu[m1];
288 for(i=m1;i<1024;i++,ptr1++) {
289 *ptr1 = fill;
290 }
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305 } else {
306 struct saa7146_pgtable *pt = &buf->pt[0];
307 return saa7146_pgtable_build_single(pci, pt, list, length);
308 }
309
310 return 0;
311 }
312
313
314
315
316
317 static int video_begin(struct saa7146_fh *fh)
318 {
319 struct saa7146_dev *dev = fh->dev;
320 struct saa7146_vv *vv = dev->vv_data;
321 struct saa7146_format *fmt = NULL;
322 unsigned int resource;
323 int ret = 0, err = 0;
324
325 DEB_EE("dev:%p, fh:%p\n", dev, fh);
326
327 if ((vv->video_status & STATUS_CAPTURE) != 0) {
328 if (vv->video_fh == fh) {
329 DEB_S("already capturing\n");
330 return 0;
331 }
332 DEB_S("already capturing in another open\n");
333 return -EBUSY;
334 }
335
336 if ((vv->video_status & STATUS_OVERLAY) != 0) {
337 DEB_S("warning: suspending overlay video for streaming capture\n");
338 vv->ov_suspend = vv->video_fh;
339 err = saa7146_stop_preview(vv->video_fh);
340 if (0 != err) {
341 DEB_D("suspending video failed. aborting\n");
342 return err;
343 }
344 }
345
346 fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
347
348 BUG_ON(NULL == fmt);
349
350 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
351 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
352 } else {
353 resource = RESOURCE_DMA1_HPS;
354 }
355
356 ret = saa7146_res_get(fh, resource);
357 if (0 == ret) {
358 DEB_S("cannot get capture resource %d\n", resource);
359 if (vv->ov_suspend != NULL) {
360 saa7146_start_preview(vv->ov_suspend);
361 vv->ov_suspend = NULL;
362 }
363 return -EBUSY;
364 }
365
366
367 saa7146_write(dev, MC2, MASK_27 );
368
369
370 SAA7146_IER_ENABLE(dev, MASK_27);
371
372 vv->video_fh = fh;
373 vv->video_status = STATUS_CAPTURE;
374
375 return 0;
376 }
377
378 static int video_end(struct saa7146_fh *fh, struct file *file)
379 {
380 struct saa7146_dev *dev = fh->dev;
381 struct saa7146_vv *vv = dev->vv_data;
382 struct saa7146_dmaqueue *q = &vv->video_dmaq;
383 struct saa7146_format *fmt = NULL;
384 unsigned long flags;
385 unsigned int resource;
386 u32 dmas = 0;
387 DEB_EE("dev:%p, fh:%p\n", dev, fh);
388
389 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
390 DEB_S("not capturing\n");
391 return 0;
392 }
393
394 if (vv->video_fh != fh) {
395 DEB_S("capturing, but in another open\n");
396 return -EBUSY;
397 }
398
399 fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
400
401 BUG_ON(NULL == fmt);
402
403 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
404 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
405 dmas = MASK_22 | MASK_21 | MASK_20;
406 } else {
407 resource = RESOURCE_DMA1_HPS;
408 dmas = MASK_22;
409 }
410 spin_lock_irqsave(&dev->slock,flags);
411
412
413 saa7146_write(dev, MC1, MASK_28);
414
415
416 SAA7146_IER_DISABLE(dev, MASK_27);
417
418
419 saa7146_write(dev, MC1, dmas);
420
421 if (q->curr)
422 saa7146_buffer_finish(dev, q, VIDEOBUF_DONE);
423
424 spin_unlock_irqrestore(&dev->slock, flags);
425
426 vv->video_fh = NULL;
427 vv->video_status = 0;
428
429 saa7146_res_free(fh, resource);
430
431 if (vv->ov_suspend != NULL) {
432 saa7146_start_preview(vv->ov_suspend);
433 vv->ov_suspend = NULL;
434 }
435
436 return 0;
437 }
438
439 static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
440 {
441 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
442
443 strscpy((char *)cap->driver, "saa7146 v4l2", sizeof(cap->driver));
444 strscpy((char *)cap->card, dev->ext->name, sizeof(cap->card));
445 sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci));
446 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY |
447 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
448 V4L2_CAP_DEVICE_CAPS;
449 cap->capabilities |= dev->ext_vv_data->capabilities;
450 return 0;
451 }
452
453 static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb)
454 {
455 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
456 struct saa7146_vv *vv = dev->vv_data;
457
458 *fb = vv->ov_fb;
459 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
460 fb->flags = V4L2_FBUF_FLAG_PRIMARY;
461 return 0;
462 }
463
464 static int vidioc_s_fbuf(struct file *file, void *fh, const struct v4l2_framebuffer *fb)
465 {
466 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
467 struct saa7146_vv *vv = dev->vv_data;
468 struct saa7146_format *fmt;
469
470 DEB_EE("VIDIOC_S_FBUF\n");
471
472 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
473 return -EPERM;
474
475
476 fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat);
477 if (NULL == fmt)
478 return -EINVAL;
479
480
481 if (fmt->flags & FORMAT_IS_PLANAR)
482 DEB_S("planar pixelformat '%4.4s' not allowed for overlay\n",
483 (char *)&fmt->pixelformat);
484
485
486 if (IS_OVERLAY_ACTIVE(fh) != 0) {
487 if (vv->video_fh != fh) {
488 DEB_D("refusing to change framebuffer information while overlay is active in another open\n");
489 return -EBUSY;
490 }
491 }
492
493
494 vv->ov_fb = *fb;
495 vv->ov_fmt = fmt;
496
497 if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) {
498 vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8;
499 DEB_D("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline);
500 }
501 return 0;
502 }
503
504 static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
505 {
506 if (f->index >= ARRAY_SIZE(formats))
507 return -EINVAL;
508 f->pixelformat = formats[f->index].pixelformat;
509 return 0;
510 }
511
512 int saa7146_s_ctrl(struct v4l2_ctrl *ctrl)
513 {
514 struct saa7146_dev *dev = container_of(ctrl->handler,
515 struct saa7146_dev, ctrl_handler);
516 struct saa7146_vv *vv = dev->vv_data;
517 u32 val;
518
519 switch (ctrl->id) {
520 case V4L2_CID_BRIGHTNESS:
521 val = saa7146_read(dev, BCS_CTRL);
522 val &= 0x00ffffff;
523 val |= (ctrl->val << 24);
524 saa7146_write(dev, BCS_CTRL, val);
525 saa7146_write(dev, MC2, MASK_22 | MASK_06);
526 break;
527
528 case V4L2_CID_CONTRAST:
529 val = saa7146_read(dev, BCS_CTRL);
530 val &= 0xff00ffff;
531 val |= (ctrl->val << 16);
532 saa7146_write(dev, BCS_CTRL, val);
533 saa7146_write(dev, MC2, MASK_22 | MASK_06);
534 break;
535
536 case V4L2_CID_SATURATION:
537 val = saa7146_read(dev, BCS_CTRL);
538 val &= 0xffffff00;
539 val |= (ctrl->val << 0);
540 saa7146_write(dev, BCS_CTRL, val);
541 saa7146_write(dev, MC2, MASK_22 | MASK_06);
542 break;
543
544 case V4L2_CID_HFLIP:
545
546 if ((vv->video_status & STATUS_CAPTURE))
547 return -EBUSY;
548 vv->hflip = ctrl->val;
549 break;
550
551 case V4L2_CID_VFLIP:
552 if ((vv->video_status & STATUS_CAPTURE))
553 return -EBUSY;
554 vv->vflip = ctrl->val;
555 break;
556
557 default:
558 return -EINVAL;
559 }
560
561 if ((vv->video_status & STATUS_OVERLAY) != 0) {
562 struct saa7146_fh *fh = vv->video_fh;
563
564 saa7146_stop_preview(fh);
565 saa7146_start_preview(fh);
566 }
567 return 0;
568 }
569
570 static int vidioc_g_parm(struct file *file, void *fh,
571 struct v4l2_streamparm *parm)
572 {
573 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
574 struct saa7146_vv *vv = dev->vv_data;
575
576 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
577 return -EINVAL;
578 parm->parm.capture.readbuffers = 1;
579 v4l2_video_std_frame_period(vv->standard->id,
580 &parm->parm.capture.timeperframe);
581 return 0;
582 }
583
584 static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
585 {
586 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
587 struct saa7146_vv *vv = dev->vv_data;
588
589 f->fmt.pix = vv->video_fmt;
590 return 0;
591 }
592
593 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
594 {
595 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
596 struct saa7146_vv *vv = dev->vv_data;
597
598 f->fmt.win = vv->ov.win;
599 return 0;
600 }
601
602 static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f)
603 {
604 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
605 struct saa7146_vv *vv = dev->vv_data;
606
607 f->fmt.vbi = vv->vbi_fmt;
608 return 0;
609 }
610
611 static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
612 {
613 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
614 struct saa7146_vv *vv = dev->vv_data;
615 struct saa7146_format *fmt;
616 enum v4l2_field field;
617 int maxw, maxh;
618 int calc_bpl;
619
620 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh);
621
622 fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat);
623 if (NULL == fmt)
624 return -EINVAL;
625
626 field = f->fmt.pix.field;
627 maxw = vv->standard->h_max_out;
628 maxh = vv->standard->v_max_out;
629
630 if (V4L2_FIELD_ANY == field) {
631 field = (f->fmt.pix.height > maxh / 2)
632 ? V4L2_FIELD_INTERLACED
633 : V4L2_FIELD_BOTTOM;
634 }
635 switch (field) {
636 case V4L2_FIELD_ALTERNATE:
637 vv->last_field = V4L2_FIELD_TOP;
638 maxh = maxh / 2;
639 break;
640 case V4L2_FIELD_TOP:
641 case V4L2_FIELD_BOTTOM:
642 vv->last_field = V4L2_FIELD_INTERLACED;
643 maxh = maxh / 2;
644 break;
645 case V4L2_FIELD_INTERLACED:
646 vv->last_field = V4L2_FIELD_INTERLACED;
647 break;
648 default:
649 DEB_D("no known field mode '%d'\n", field);
650 return -EINVAL;
651 }
652
653 f->fmt.pix.field = field;
654 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
655 if (f->fmt.pix.width > maxw)
656 f->fmt.pix.width = maxw;
657 if (f->fmt.pix.height > maxh)
658 f->fmt.pix.height = maxh;
659
660 calc_bpl = (f->fmt.pix.width * fmt->depth) / 8;
661
662 if (f->fmt.pix.bytesperline < calc_bpl)
663 f->fmt.pix.bytesperline = calc_bpl;
664
665 if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8)
666 f->fmt.pix.bytesperline = calc_bpl;
667
668 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
669 DEB_D("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n",
670 f->fmt.pix.width, f->fmt.pix.height,
671 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
672
673 return 0;
674 }
675
676
677 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
678 {
679 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
680 struct saa7146_vv *vv = dev->vv_data;
681 struct v4l2_window *win = &f->fmt.win;
682 enum v4l2_field field;
683 int maxw, maxh;
684
685 DEB_EE("dev:%p\n", dev);
686
687 if (NULL == vv->ov_fb.base) {
688 DEB_D("no fb base set\n");
689 return -EINVAL;
690 }
691 if (NULL == vv->ov_fmt) {
692 DEB_D("no fb fmt set\n");
693 return -EINVAL;
694 }
695 if (win->w.width < 48 || win->w.height < 32) {
696 DEB_D("min width/height. (%d,%d)\n",
697 win->w.width, win->w.height);
698 return -EINVAL;
699 }
700 if (win->clipcount > 16) {
701 DEB_D("clipcount too big\n");
702 return -EINVAL;
703 }
704
705 field = win->field;
706 maxw = vv->standard->h_max_out;
707 maxh = vv->standard->v_max_out;
708
709 if (V4L2_FIELD_ANY == field) {
710 field = (win->w.height > maxh / 2)
711 ? V4L2_FIELD_INTERLACED
712 : V4L2_FIELD_TOP;
713 }
714 switch (field) {
715 case V4L2_FIELD_TOP:
716 case V4L2_FIELD_BOTTOM:
717 case V4L2_FIELD_ALTERNATE:
718 maxh = maxh / 2;
719 break;
720 case V4L2_FIELD_INTERLACED:
721 break;
722 default:
723 DEB_D("no known field mode '%d'\n", field);
724 return -EINVAL;
725 }
726
727 win->field = field;
728 if (win->w.width > maxw)
729 win->w.width = maxw;
730 if (win->w.height > maxh)
731 win->w.height = maxh;
732
733 return 0;
734 }
735
736 static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f)
737 {
738 struct saa7146_fh *fh = __fh;
739 struct saa7146_dev *dev = fh->dev;
740 struct saa7146_vv *vv = dev->vv_data;
741 int err;
742
743 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh);
744 if (IS_CAPTURE_ACTIVE(fh) != 0) {
745 DEB_EE("streaming capture is active\n");
746 return -EBUSY;
747 }
748 err = vidioc_try_fmt_vid_cap(file, fh, f);
749 if (0 != err)
750 return err;
751 vv->video_fmt = f->fmt.pix;
752 DEB_EE("set to pixelformat '%4.4s'\n",
753 (char *)&vv->video_fmt.pixelformat);
754 return 0;
755 }
756
757 static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f)
758 {
759 struct saa7146_fh *fh = __fh;
760 struct saa7146_dev *dev = fh->dev;
761 struct saa7146_vv *vv = dev->vv_data;
762 int err;
763
764 DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh);
765 err = vidioc_try_fmt_vid_overlay(file, fh, f);
766 if (0 != err)
767 return err;
768 vv->ov.win = f->fmt.win;
769 vv->ov.nclips = f->fmt.win.clipcount;
770 if (vv->ov.nclips > 16)
771 vv->ov.nclips = 16;
772 if (copy_from_user(vv->ov.clips, f->fmt.win.clips,
773 sizeof(struct v4l2_clip) * vv->ov.nclips)) {
774 return -EFAULT;
775 }
776
777
778 vv->ov.fh = fh;
779
780
781 if (IS_OVERLAY_ACTIVE(fh) != 0) {
782 saa7146_stop_preview(fh);
783 saa7146_start_preview(fh);
784 }
785 return 0;
786 }
787
788 static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm)
789 {
790 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
791 struct saa7146_vv *vv = dev->vv_data;
792
793 *norm = vv->standard->id;
794 return 0;
795 }
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815 static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id id)
816 {
817 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
818 struct saa7146_vv *vv = dev->vv_data;
819 int found = 0;
820 int err, i;
821
822 DEB_EE("VIDIOC_S_STD\n");
823
824 if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) {
825 DEB_D("cannot change video standard while streaming capture is active\n");
826 return -EBUSY;
827 }
828
829 if ((vv->video_status & STATUS_OVERLAY) != 0) {
830 vv->ov_suspend = vv->video_fh;
831 err = saa7146_stop_preview(vv->video_fh);
832 if (0 != err) {
833 DEB_D("suspending video failed. aborting\n");
834 return err;
835 }
836 }
837
838 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
839 if (id & dev->ext_vv_data->stds[i].id)
840 break;
841 if (i != dev->ext_vv_data->num_stds) {
842 vv->standard = &dev->ext_vv_data->stds[i];
843 if (NULL != dev->ext_vv_data->std_callback)
844 dev->ext_vv_data->std_callback(dev, vv->standard);
845 found = 1;
846 }
847
848 if (vv->ov_suspend != NULL) {
849 saa7146_start_preview(vv->ov_suspend);
850 vv->ov_suspend = NULL;
851 }
852
853 if (!found) {
854 DEB_EE("VIDIOC_S_STD: standard not found\n");
855 return -EINVAL;
856 }
857
858 DEB_EE("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name);
859 return 0;
860 }
861
862 static int vidioc_overlay(struct file *file, void *fh, unsigned int on)
863 {
864 int err;
865
866 DEB_D("VIDIOC_OVERLAY on:%d\n", on);
867 if (on)
868 err = saa7146_start_preview(fh);
869 else
870 err = saa7146_stop_preview(fh);
871 return err;
872 }
873
874 static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b)
875 {
876 struct saa7146_fh *fh = __fh;
877
878 if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
879 return videobuf_reqbufs(&fh->video_q, b);
880 if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE)
881 return videobuf_reqbufs(&fh->vbi_q, b);
882 return -EINVAL;
883 }
884
885 static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
886 {
887 struct saa7146_fh *fh = __fh;
888
889 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
890 return videobuf_querybuf(&fh->video_q, buf);
891 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
892 return videobuf_querybuf(&fh->vbi_q, buf);
893 return -EINVAL;
894 }
895
896 static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
897 {
898 struct saa7146_fh *fh = __fh;
899
900 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
901 return videobuf_qbuf(&fh->video_q, buf);
902 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
903 return videobuf_qbuf(&fh->vbi_q, buf);
904 return -EINVAL;
905 }
906
907 static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
908 {
909 struct saa7146_fh *fh = __fh;
910
911 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
912 return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK);
913 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
914 return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK);
915 return -EINVAL;
916 }
917
918 static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type)
919 {
920 struct saa7146_fh *fh = __fh;
921 int err;
922
923 DEB_D("VIDIOC_STREAMON, type:%d\n", type);
924
925 err = video_begin(fh);
926 if (err)
927 return err;
928 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
929 return videobuf_streamon(&fh->video_q);
930 if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
931 return videobuf_streamon(&fh->vbi_q);
932 return -EINVAL;
933 }
934
935 static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type)
936 {
937 struct saa7146_fh *fh = __fh;
938 struct saa7146_dev *dev = fh->dev;
939 struct saa7146_vv *vv = dev->vv_data;
940 int err;
941
942 DEB_D("VIDIOC_STREAMOFF, type:%d\n", type);
943
944
945
946
947 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
948 DEB_S("not capturing\n");
949 return 0;
950 }
951
952 if (vv->video_fh != fh) {
953 DEB_S("capturing, but in another open\n");
954 return -EBUSY;
955 }
956
957 err = -EINVAL;
958 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
959 err = videobuf_streamoff(&fh->video_q);
960 else if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
961 err = videobuf_streamoff(&fh->vbi_q);
962 if (0 != err) {
963 DEB_D("warning: videobuf_streamoff() failed\n");
964 video_end(fh, file);
965 } else {
966 err = video_end(fh, file);
967 }
968 return err;
969 }
970
971 const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = {
972 .vidioc_querycap = vidioc_querycap,
973 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
974 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap,
975 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
976 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
977 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
978 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
979 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
980 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
981
982 .vidioc_overlay = vidioc_overlay,
983 .vidioc_g_fbuf = vidioc_g_fbuf,
984 .vidioc_s_fbuf = vidioc_s_fbuf,
985 .vidioc_reqbufs = vidioc_reqbufs,
986 .vidioc_querybuf = vidioc_querybuf,
987 .vidioc_qbuf = vidioc_qbuf,
988 .vidioc_dqbuf = vidioc_dqbuf,
989 .vidioc_g_std = vidioc_g_std,
990 .vidioc_s_std = vidioc_s_std,
991 .vidioc_streamon = vidioc_streamon,
992 .vidioc_streamoff = vidioc_streamoff,
993 .vidioc_g_parm = vidioc_g_parm,
994 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
995 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
996 };
997
998 const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops = {
999 .vidioc_querycap = vidioc_querycap,
1000 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1001
1002 .vidioc_reqbufs = vidioc_reqbufs,
1003 .vidioc_querybuf = vidioc_querybuf,
1004 .vidioc_qbuf = vidioc_qbuf,
1005 .vidioc_dqbuf = vidioc_dqbuf,
1006 .vidioc_g_std = vidioc_g_std,
1007 .vidioc_s_std = vidioc_s_std,
1008 .vidioc_streamon = vidioc_streamon,
1009 .vidioc_streamoff = vidioc_streamoff,
1010 .vidioc_g_parm = vidioc_g_parm,
1011 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1012 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1013 };
1014
1015
1016
1017
1018 static int buffer_activate (struct saa7146_dev *dev,
1019 struct saa7146_buf *buf,
1020 struct saa7146_buf *next)
1021 {
1022 struct saa7146_vv *vv = dev->vv_data;
1023
1024 buf->vb.state = VIDEOBUF_ACTIVE;
1025 saa7146_set_capture(dev,buf,next);
1026
1027 mod_timer(&vv->video_dmaq.timeout, jiffies+BUFFER_TIMEOUT);
1028 return 0;
1029 }
1030
1031 static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf)
1032 {
1033 saa7146_pgtable_free(dev->pci, &buf->pt[0]);
1034 saa7146_pgtable_free(dev->pci, &buf->pt[1]);
1035 saa7146_pgtable_free(dev->pci, &buf->pt[2]);
1036 }
1037
1038 static int buffer_prepare(struct videobuf_queue *q,
1039 struct videobuf_buffer *vb, enum v4l2_field field)
1040 {
1041 struct file *file = q->priv_data;
1042 struct saa7146_fh *fh = file->private_data;
1043 struct saa7146_dev *dev = fh->dev;
1044 struct saa7146_vv *vv = dev->vv_data;
1045 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1046 int size,err = 0;
1047
1048 DEB_CAP("vbuf:%p\n", vb);
1049
1050
1051 if (vv->video_fmt.width < 48 ||
1052 vv->video_fmt.height < 32 ||
1053 vv->video_fmt.width > vv->standard->h_max_out ||
1054 vv->video_fmt.height > vv->standard->v_max_out) {
1055 DEB_D("w (%d) / h (%d) out of bounds\n",
1056 vv->video_fmt.width, vv->video_fmt.height);
1057 return -EINVAL;
1058 }
1059
1060 size = vv->video_fmt.sizeimage;
1061 if (0 != buf->vb.baddr && buf->vb.bsize < size) {
1062 DEB_D("size mismatch\n");
1063 return -EINVAL;
1064 }
1065
1066 DEB_CAP("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n",
1067 vv->video_fmt.width, vv->video_fmt.height,
1068 size, v4l2_field_names[vv->video_fmt.field]);
1069 if (buf->vb.width != vv->video_fmt.width ||
1070 buf->vb.bytesperline != vv->video_fmt.bytesperline ||
1071 buf->vb.height != vv->video_fmt.height ||
1072 buf->vb.size != size ||
1073 buf->vb.field != field ||
1074 buf->vb.field != vv->video_fmt.field ||
1075 buf->fmt != &vv->video_fmt) {
1076 saa7146_dma_free(dev,q,buf);
1077 }
1078
1079 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
1080 struct saa7146_format *sfmt;
1081
1082 buf->vb.bytesperline = vv->video_fmt.bytesperline;
1083 buf->vb.width = vv->video_fmt.width;
1084 buf->vb.height = vv->video_fmt.height;
1085 buf->vb.size = size;
1086 buf->vb.field = field;
1087 buf->fmt = &vv->video_fmt;
1088 buf->vb.field = vv->video_fmt.field;
1089
1090 sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
1091
1092 release_all_pagetables(dev, buf);
1093 if( 0 != IS_PLANAR(sfmt->trans)) {
1094 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1095 saa7146_pgtable_alloc(dev->pci, &buf->pt[1]);
1096 saa7146_pgtable_alloc(dev->pci, &buf->pt[2]);
1097 } else {
1098 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1099 }
1100
1101 err = videobuf_iolock(q,&buf->vb, &vv->ov_fb);
1102 if (err)
1103 goto oops;
1104 err = saa7146_pgtable_build(dev,buf);
1105 if (err)
1106 goto oops;
1107 }
1108 buf->vb.state = VIDEOBUF_PREPARED;
1109 buf->activate = buffer_activate;
1110
1111 return 0;
1112
1113 oops:
1114 DEB_D("error out\n");
1115 saa7146_dma_free(dev,q,buf);
1116
1117 return err;
1118 }
1119
1120 static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1121 {
1122 struct file *file = q->priv_data;
1123 struct saa7146_fh *fh = file->private_data;
1124 struct saa7146_vv *vv = fh->dev->vv_data;
1125
1126 if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS)
1127 *count = MAX_SAA7146_CAPTURE_BUFFERS;
1128
1129 *size = vv->video_fmt.sizeimage;
1130
1131
1132 if( (*count * *size) > (max_memory*1048576) ) {
1133 *count = (max_memory*1048576) / *size;
1134 }
1135
1136 DEB_CAP("%d buffers, %d bytes each\n", *count, *size);
1137
1138 return 0;
1139 }
1140
1141 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1142 {
1143 struct file *file = q->priv_data;
1144 struct saa7146_fh *fh = file->private_data;
1145 struct saa7146_dev *dev = fh->dev;
1146 struct saa7146_vv *vv = dev->vv_data;
1147 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1148
1149 DEB_CAP("vbuf:%p\n", vb);
1150 saa7146_buffer_queue(fh->dev, &vv->video_dmaq, buf);
1151 }
1152
1153 static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1154 {
1155 struct file *file = q->priv_data;
1156 struct saa7146_fh *fh = file->private_data;
1157 struct saa7146_dev *dev = fh->dev;
1158 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1159
1160 DEB_CAP("vbuf:%p\n", vb);
1161
1162 saa7146_dma_free(dev,q,buf);
1163
1164 release_all_pagetables(dev, buf);
1165 }
1166
1167 static const struct videobuf_queue_ops video_qops = {
1168 .buf_setup = buffer_setup,
1169 .buf_prepare = buffer_prepare,
1170 .buf_queue = buffer_queue,
1171 .buf_release = buffer_release,
1172 };
1173
1174
1175
1176
1177 static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv)
1178 {
1179 INIT_LIST_HEAD(&vv->video_dmaq.queue);
1180
1181 timer_setup(&vv->video_dmaq.timeout, saa7146_buffer_timeout, 0);
1182 vv->video_dmaq.dev = dev;
1183
1184
1185 vv->standard = &dev->ext_vv_data->stds[0];
1186
1187
1188 vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A;
1189 vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A;
1190 }
1191
1192
1193 static int video_open(struct saa7146_dev *dev, struct file *file)
1194 {
1195 struct saa7146_fh *fh = file->private_data;
1196
1197 videobuf_queue_sg_init(&fh->video_q, &video_qops,
1198 &dev->pci->dev, &dev->slock,
1199 V4L2_BUF_TYPE_VIDEO_CAPTURE,
1200 V4L2_FIELD_INTERLACED,
1201 sizeof(struct saa7146_buf),
1202 file, &dev->v4l2_lock);
1203
1204 return 0;
1205 }
1206
1207
1208 static void video_close(struct saa7146_dev *dev, struct file *file)
1209 {
1210 struct saa7146_fh *fh = file->private_data;
1211 struct saa7146_vv *vv = dev->vv_data;
1212 struct videobuf_queue *q = &fh->video_q;
1213
1214 if (IS_CAPTURE_ACTIVE(fh) != 0)
1215 video_end(fh, file);
1216 else if (IS_OVERLAY_ACTIVE(fh) != 0)
1217 saa7146_stop_preview(fh);
1218
1219 videobuf_stop(q);
1220
1221 }
1222
1223
1224 static void video_irq_done(struct saa7146_dev *dev, unsigned long st)
1225 {
1226 struct saa7146_vv *vv = dev->vv_data;
1227 struct saa7146_dmaqueue *q = &vv->video_dmaq;
1228
1229 spin_lock(&dev->slock);
1230 DEB_CAP("called\n");
1231
1232
1233 if( NULL != q->curr ) {
1234 saa7146_buffer_finish(dev,q,VIDEOBUF_DONE);
1235 }
1236 saa7146_buffer_next(dev,q,0);
1237
1238 spin_unlock(&dev->slock);
1239 }
1240
1241 static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
1242 {
1243 struct saa7146_fh *fh = file->private_data;
1244 struct saa7146_dev *dev = fh->dev;
1245 struct saa7146_vv *vv = dev->vv_data;
1246 ssize_t ret = 0;
1247
1248 DEB_EE("called\n");
1249
1250 if ((vv->video_status & STATUS_CAPTURE) != 0) {
1251
1252 if (vv->video_fh == fh) {
1253 DEB_S("already capturing\n");
1254 return -EBUSY;
1255 }
1256 DEB_S("already capturing in another open\n");
1257 return -EBUSY;
1258 }
1259
1260 ret = video_begin(fh);
1261 if( 0 != ret) {
1262 goto out;
1263 }
1264
1265 ret = videobuf_read_one(&fh->video_q , data, count, ppos,
1266 file->f_flags & O_NONBLOCK);
1267 if (ret != 0) {
1268 video_end(fh, file);
1269 } else {
1270 ret = video_end(fh, file);
1271 }
1272 out:
1273
1274 if (vv->ov_suspend != NULL) {
1275 saa7146_start_preview(vv->ov_suspend);
1276 vv->ov_suspend = NULL;
1277 }
1278
1279 return ret;
1280 }
1281
1282 const struct saa7146_use_ops saa7146_video_uops = {
1283 .init = video_init,
1284 .open = video_open,
1285 .release = video_close,
1286 .irq_done = video_irq_done,
1287 .read = video_read,
1288 };