blob: a2a8847e67892abef1892ed024ba8c73c9f0b894 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <media/saa7146_vv.h>
Hans Verkuil1b8dac12009-02-07 11:18:05 -03002#include <media/v4l2-chip-ident.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07003
4static int max_memory = 32;
5
6module_param(max_memory, int, 0644);
7MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)");
8
9#define IS_CAPTURE_ACTIVE(fh) \
10 (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh))
11
12#define IS_OVERLAY_ACTIVE(fh) \
13 (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh))
14
15/* format descriptions for capture and preview */
16static struct saa7146_format formats[] = {
17 {
18 .name = "RGB-8 (3-3-2)",
19 .pixelformat = V4L2_PIX_FMT_RGB332,
20 .trans = RGB08_COMPOSED,
21 .depth = 8,
22 .flags = 0,
23 }, {
24 .name = "RGB-16 (5/B-6/G-5/R)",
25 .pixelformat = V4L2_PIX_FMT_RGB565,
26 .trans = RGB16_COMPOSED,
27 .depth = 16,
28 .flags = 0,
29 }, {
30 .name = "RGB-24 (B-G-R)",
31 .pixelformat = V4L2_PIX_FMT_BGR24,
32 .trans = RGB24_COMPOSED,
33 .depth = 24,
34 .flags = 0,
35 }, {
36 .name = "RGB-32 (B-G-R)",
37 .pixelformat = V4L2_PIX_FMT_BGR32,
38 .trans = RGB32_COMPOSED,
39 .depth = 32,
40 .flags = 0,
41 }, {
42 .name = "RGB-32 (R-G-B)",
43 .pixelformat = V4L2_PIX_FMT_RGB32,
44 .trans = RGB32_COMPOSED,
45 .depth = 32,
46 .flags = 0,
47 .swap = 0x2,
48 }, {
49 .name = "Greyscale-8",
50 .pixelformat = V4L2_PIX_FMT_GREY,
51 .trans = Y8,
52 .depth = 8,
53 .flags = 0,
54 }, {
55 .name = "YUV 4:2:2 planar (Y-Cb-Cr)",
56 .pixelformat = V4L2_PIX_FMT_YUV422P,
57 .trans = YUV422_DECOMPOSED,
58 .depth = 16,
59 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
60 }, {
61 .name = "YVU 4:2:0 planar (Y-Cb-Cr)",
62 .pixelformat = V4L2_PIX_FMT_YVU420,
63 .trans = YUV420_DECOMPOSED,
64 .depth = 12,
65 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
66 }, {
67 .name = "YUV 4:2:0 planar (Y-Cb-Cr)",
68 .pixelformat = V4L2_PIX_FMT_YUV420,
69 .trans = YUV420_DECOMPOSED,
70 .depth = 12,
71 .flags = FORMAT_IS_PLANAR,
72 }, {
73 .name = "YUV 4:2:2 (U-Y-V-Y)",
74 .pixelformat = V4L2_PIX_FMT_UYVY,
75 .trans = YUV422_COMPOSED,
76 .depth = 16,
77 .flags = 0,
78 }
79};
80
81/* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps.
82 due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped
83 (like V4L2_PIX_FMT_YUYV) ... 8-( */
84
85static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format);
86
87struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc)
88{
89 int i, j = NUM_FORMATS;
90
91 for (i = 0; i < j; i++) {
92 if (formats[i].pixelformat == fourcc) {
93 return formats+i;
94 }
95 }
96
97 DEB_D(("unknown pixelformat:'%4.4s'\n",(char *)&fourcc));
98 return NULL;
99}
100
Hans Verkuilb9600742009-01-18 19:59:11 -0300101static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
103int saa7146_start_preview(struct saa7146_fh *fh)
104{
105 struct saa7146_dev *dev = fh->dev;
106 struct saa7146_vv *vv = dev->vv_data;
Hans Verkuilb9600742009-01-18 19:59:11 -0300107 struct v4l2_format fmt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 int ret = 0, err = 0;
109
110 DEB_EE(("dev:%p, fh:%p\n",dev,fh));
111
112 /* check if we have overlay informations */
113 if( NULL == fh->ov.fh ) {
114 DEB_D(("no overlay data available. try S_FMT first.\n"));
115 return -EAGAIN;
116 }
117
118 /* check if streaming capture is running */
119 if (IS_CAPTURE_ACTIVE(fh) != 0) {
120 DEB_D(("streaming capture is active.\n"));
121 return -EBUSY;
122 }
123
124 /* check if overlay is running */
125 if (IS_OVERLAY_ACTIVE(fh) != 0) {
126 if (vv->video_fh == fh) {
127 DEB_D(("overlay is already active.\n"));
128 return 0;
129 }
130 DEB_D(("overlay is already active in another open.\n"));
131 return -EBUSY;
132 }
133
134 if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) {
135 DEB_D(("cannot get necessary overlay resources\n"));
136 return -EBUSY;
137 }
138
Hans Verkuilb9600742009-01-18 19:59:11 -0300139 fmt.fmt.win = fh->ov.win;
140 err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 if (0 != err) {
142 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
143 return -EBUSY;
144 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300145 fh->ov.win = fmt.fmt.win;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 vv->ov_data = &fh->ov;
147
148 DEB_D(("%dx%d+%d+%d %s field=%s\n",
149 fh->ov.win.w.width,fh->ov.win.w.height,
150 fh->ov.win.w.left,fh->ov.win.w.top,
151 vv->ov_fmt->name,v4l2_field_names[fh->ov.win.field]));
152
153 if (0 != (ret = saa7146_enable_overlay(fh))) {
154 DEB_D(("enabling overlay failed: %d\n",ret));
155 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
156 return ret;
157 }
158
159 vv->video_status = STATUS_OVERLAY;
160 vv->video_fh = fh;
161
162 return 0;
163}
Adrian Bunk5d7dc8c2006-04-11 10:26:57 -0300164EXPORT_SYMBOL_GPL(saa7146_start_preview);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166int saa7146_stop_preview(struct saa7146_fh *fh)
167{
168 struct saa7146_dev *dev = fh->dev;
169 struct saa7146_vv *vv = dev->vv_data;
170
171 DEB_EE(("dev:%p, fh:%p\n",dev,fh));
172
173 /* check if streaming capture is running */
174 if (IS_CAPTURE_ACTIVE(fh) != 0) {
175 DEB_D(("streaming capture is active.\n"));
176 return -EBUSY;
177 }
178
179 /* check if overlay is running at all */
180 if ((vv->video_status & STATUS_OVERLAY) == 0) {
181 DEB_D(("no active overlay.\n"));
182 return 0;
183 }
184
185 if (vv->video_fh != fh) {
186 DEB_D(("overlay is active, but in another open.\n"));
187 return -EBUSY;
188 }
189
190 vv->video_status = 0;
191 vv->video_fh = NULL;
192
193 saa7146_disable_overlay(fh);
194
195 saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
196
197 return 0;
198}
Adrian Bunk5d7dc8c2006-04-11 10:26:57 -0300199EXPORT_SYMBOL_GPL(saa7146_stop_preview);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201/********************************************************************************/
202/* device controls */
203
204static struct v4l2_queryctrl controls[] = {
205 {
206 .id = V4L2_CID_BRIGHTNESS,
207 .name = "Brightness",
208 .minimum = 0,
209 .maximum = 255,
210 .step = 1,
211 .default_value = 128,
212 .type = V4L2_CTRL_TYPE_INTEGER,
Hans Verkuil1b8dac12009-02-07 11:18:05 -0300213 .flags = V4L2_CTRL_FLAG_SLIDER,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 },{
215 .id = V4L2_CID_CONTRAST,
216 .name = "Contrast",
217 .minimum = 0,
218 .maximum = 127,
219 .step = 1,
220 .default_value = 64,
221 .type = V4L2_CTRL_TYPE_INTEGER,
Hans Verkuil1b8dac12009-02-07 11:18:05 -0300222 .flags = V4L2_CTRL_FLAG_SLIDER,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 },{
224 .id = V4L2_CID_SATURATION,
225 .name = "Saturation",
226 .minimum = 0,
227 .maximum = 127,
228 .step = 1,
229 .default_value = 64,
230 .type = V4L2_CTRL_TYPE_INTEGER,
Hans Verkuil1b8dac12009-02-07 11:18:05 -0300231 .flags = V4L2_CTRL_FLAG_SLIDER,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 },{
233 .id = V4L2_CID_VFLIP,
Hans Verkuil1b8dac12009-02-07 11:18:05 -0300234 .name = "Vertical Flip",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 .minimum = 0,
236 .maximum = 1,
237 .type = V4L2_CTRL_TYPE_BOOLEAN,
238 },{
239 .id = V4L2_CID_HFLIP,
Hans Verkuil1b8dac12009-02-07 11:18:05 -0300240 .name = "Horizontal Flip",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 .minimum = 0,
242 .maximum = 1,
243 .type = V4L2_CTRL_TYPE_BOOLEAN,
244 },
245};
246static int NUM_CONTROLS = sizeof(controls)/sizeof(struct v4l2_queryctrl);
247
248#define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 0)
249
250static struct v4l2_queryctrl* ctrl_by_id(int id)
251{
252 int i;
253
254 for (i = 0; i < NUM_CONTROLS; i++)
255 if (controls[i].id == id)
256 return controls+i;
257 return NULL;
258}
259
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260/********************************************************************************/
261/* common pagetable functions */
262
263static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf)
264{
265 struct pci_dev *pci = dev->pci;
Mauro Carvalho Chehabc1accaa2007-08-23 16:37:49 -0300266 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
267 struct scatterlist *list = dma->sglist;
268 int length = dma->sglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat);
270
271 DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length));
272
273 if( 0 != IS_PLANAR(sfmt->trans)) {
274 struct saa7146_pgtable *pt1 = &buf->pt[0];
275 struct saa7146_pgtable *pt2 = &buf->pt[1];
276 struct saa7146_pgtable *pt3 = &buf->pt[2];
Al Viroa36ef6b2008-06-22 14:19:19 -0300277 __le32 *ptr1, *ptr2, *ptr3;
278 __le32 fill;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
280 int size = buf->fmt->width*buf->fmt->height;
281 int i,p,m1,m2,m3,o1,o2;
282
283 switch( sfmt->depth ) {
284 case 12: {
285 /* create some offsets inside the page table */
286 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
287 m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1;
288 m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
289 o1 = size%PAGE_SIZE;
290 o2 = (size+(size/4))%PAGE_SIZE;
291 DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2));
292 break;
293 }
294 case 16: {
295 /* create some offsets inside the page table */
296 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
297 m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
298 m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1;
299 o1 = size%PAGE_SIZE;
300 o2 = (size+(size/2))%PAGE_SIZE;
301 DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2));
302 break;
303 }
304 default: {
305 return -1;
306 }
307 }
308
309 ptr1 = pt1->cpu;
310 ptr2 = pt2->cpu;
311 ptr3 = pt3->cpu;
312
313 /* walk all pages, copy all page addresses to ptr1 */
314 for (i = 0; i < length; i++, list++) {
315 for (p = 0; p * 4096 < list->length; p++, ptr1++) {
316 *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset);
317 }
318 }
319/*
320 ptr1 = pt1->cpu;
321 for(j=0;j<40;j++) {
322 printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
323 }
324*/
325
326 /* if we have a user buffer, the first page may not be
327 aligned to a page boundary. */
Hans Verkuil429e9082008-07-27 14:08:54 -0300328 pt1->offset = dma->sglist->offset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 pt2->offset = pt1->offset+o1;
330 pt3->offset = pt1->offset+o2;
331
332 /* create video-dma2 page table */
333 ptr1 = pt1->cpu;
334 for(i = m1; i <= m2 ; i++, ptr2++) {
335 *ptr2 = ptr1[i];
336 }
337 fill = *(ptr2-1);
338 for(;i<1024;i++,ptr2++) {
339 *ptr2 = fill;
340 }
341 /* create video-dma3 page table */
342 ptr1 = pt1->cpu;
343 for(i = m2; i <= m3; i++,ptr3++) {
344 *ptr3 = ptr1[i];
345 }
346 fill = *(ptr3-1);
347 for(;i<1024;i++,ptr3++) {
348 *ptr3 = fill;
349 }
350 /* finally: finish up video-dma1 page table */
351 ptr1 = pt1->cpu+m1;
352 fill = pt1->cpu[m1];
353 for(i=m1;i<1024;i++,ptr1++) {
354 *ptr1 = fill;
355 }
356/*
357 ptr1 = pt1->cpu;
358 ptr2 = pt2->cpu;
359 ptr3 = pt3->cpu;
360 for(j=0;j<40;j++) {
361 printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
362 }
363 for(j=0;j<40;j++) {
364 printk("ptr2 %d: 0x%08x\n",j,ptr2[j]);
365 }
366 for(j=0;j<40;j++) {
367 printk("ptr3 %d: 0x%08x\n",j,ptr3[j]);
368 }
369*/
370 } else {
371 struct saa7146_pgtable *pt = &buf->pt[0];
372 return saa7146_pgtable_build_single(pci, pt, list, length);
373 }
374
375 return 0;
376}
377
378
379/********************************************************************************/
380/* file operations */
381
382static int video_begin(struct saa7146_fh *fh)
383{
384 struct saa7146_dev *dev = fh->dev;
385 struct saa7146_vv *vv = dev->vv_data;
386 struct saa7146_format *fmt = NULL;
387 unsigned int resource;
388 int ret = 0, err = 0;
389
390 DEB_EE(("dev:%p, fh:%p\n",dev,fh));
391
392 if ((vv->video_status & STATUS_CAPTURE) != 0) {
393 if (vv->video_fh == fh) {
394 DEB_S(("already capturing.\n"));
395 return 0;
396 }
397 DEB_S(("already capturing in another open.\n"));
398 return -EBUSY;
399 }
400
401 if ((vv->video_status & STATUS_OVERLAY) != 0) {
402 DEB_S(("warning: suspending overlay video for streaming capture.\n"));
403 vv->ov_suspend = vv->video_fh;
404 err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
405 if (0 != err) {
406 DEB_D(("suspending video failed. aborting\n"));
407 return err;
408 }
409 }
410
411 fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
412 /* we need to have a valid format set here */
413 BUG_ON(NULL == fmt);
414
415 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
416 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
417 } else {
418 resource = RESOURCE_DMA1_HPS;
419 }
420
421 ret = saa7146_res_get(fh, resource);
422 if (0 == ret) {
423 DEB_S(("cannot get capture resource %d\n",resource));
424 if (vv->ov_suspend != NULL) {
425 saa7146_start_preview(vv->ov_suspend);
426 vv->ov_suspend = NULL;
427 }
428 return -EBUSY;
429 }
430
431 /* clear out beginning of streaming bit (rps register 0)*/
432 saa7146_write(dev, MC2, MASK_27 );
433
434 /* enable rps0 irqs */
435 SAA7146_IER_ENABLE(dev, MASK_27);
436
437 vv->video_fh = fh;
438 vv->video_status = STATUS_CAPTURE;
439
440 return 0;
441}
442
443static int video_end(struct saa7146_fh *fh, struct file *file)
444{
445 struct saa7146_dev *dev = fh->dev;
446 struct saa7146_vv *vv = dev->vv_data;
447 struct saa7146_format *fmt = NULL;
448 unsigned long flags;
449 unsigned int resource;
450 u32 dmas = 0;
451 DEB_EE(("dev:%p, fh:%p\n",dev,fh));
452
453 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
454 DEB_S(("not capturing.\n"));
455 return 0;
456 }
457
458 if (vv->video_fh != fh) {
459 DEB_S(("capturing, but in another open.\n"));
460 return -EBUSY;
461 }
462
463 fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
464 /* we need to have a valid format set here */
465 BUG_ON(NULL == fmt);
466
467 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
468 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
469 dmas = MASK_22 | MASK_21 | MASK_20;
470 } else {
471 resource = RESOURCE_DMA1_HPS;
472 dmas = MASK_22;
473 }
474 spin_lock_irqsave(&dev->slock,flags);
475
476 /* disable rps0 */
477 saa7146_write(dev, MC1, MASK_28);
478
479 /* disable rps0 irqs */
480 SAA7146_IER_DISABLE(dev, MASK_27);
481
482 /* shut down all used video dma transfers */
483 saa7146_write(dev, MC1, dmas);
484
485 spin_unlock_irqrestore(&dev->slock, flags);
486
487 vv->video_fh = NULL;
488 vv->video_status = 0;
489
490 saa7146_res_free(fh, resource);
491
492 if (vv->ov_suspend != NULL) {
493 saa7146_start_preview(vv->ov_suspend);
494 vv->ov_suspend = NULL;
495 }
496
497 return 0;
498}
499
Hans Verkuilb9600742009-01-18 19:59:11 -0300500static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
Hans Verkuilb9600742009-01-18 19:59:11 -0300502 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
503
504 strcpy((char *)cap->driver, "saa7146 v4l2");
505 strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card));
506 sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci));
507 cap->version = SAA7146_VERSION_CODE;
508 cap->capabilities =
509 V4L2_CAP_VIDEO_CAPTURE |
510 V4L2_CAP_VIDEO_OVERLAY |
511 V4L2_CAP_READWRITE |
512 V4L2_CAP_STREAMING;
513 cap->capabilities |= dev->ext_vv_data->capabilities;
514 return 0;
515}
516
517static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb)
518{
519 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 struct saa7146_vv *vv = dev->vv_data;
521
Hans Verkuilb9600742009-01-18 19:59:11 -0300522 *fb = vv->ov_fb;
523 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
524 return 0;
525}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
Hans Verkuilb9600742009-01-18 19:59:11 -0300527static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb)
528{
529 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
530 struct saa7146_vv *vv = dev->vv_data;
531 struct saa7146_format *fmt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532
Hans Verkuilb9600742009-01-18 19:59:11 -0300533 DEB_EE(("VIDIOC_S_FBUF\n"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534
Hans Verkuilb9600742009-01-18 19:59:11 -0300535 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
536 return -EPERM;
537
538 /* check args */
539 fmt = format_by_fourcc(dev, fb->fmt.pixelformat);
540 if (NULL == fmt)
541 return -EINVAL;
542
543 /* planar formats are not allowed for overlay video, clipping and video dma would clash */
544 if (fmt->flags & FORMAT_IS_PLANAR)
545 DEB_S(("planar pixelformat '%4.4s' not allowed for overlay\n",
546 (char *)&fmt->pixelformat));
547
548 /* check if overlay is running */
549 if (IS_OVERLAY_ACTIVE(fh) != 0) {
550 if (vv->video_fh != fh) {
551 DEB_D(("refusing to change framebuffer informations while overlay is active in another open.\n"));
552 return -EBUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 }
554 }
555
Hans Verkuilb9600742009-01-18 19:59:11 -0300556 mutex_lock(&dev->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557
Hans Verkuilb9600742009-01-18 19:59:11 -0300558 /* ok, accept it */
559 vv->ov_fb = *fb;
560 vv->ov_fmt = fmt;
561 if (0 == vv->ov_fb.fmt.bytesperline)
562 vv->ov_fb.fmt.bytesperline =
563 vv->ov_fb.fmt.width * fmt->depth / 8;
564
565 mutex_unlock(&dev->lock);
566 return 0;
567}
568
569static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
570{
571 if (f->index >= NUM_FORMATS)
572 return -EINVAL;
573 strlcpy((char *)f->description, formats[f->index].name,
574 sizeof(f->description));
575 f->pixelformat = formats[f->index].pixelformat;
576 return 0;
577}
578
579static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_fmtdesc *f)
580{
581 return vidioc_enum_fmt_vid_cap(file, fh, f);
582}
583
584static int vidioc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c)
585{
586 const struct v4l2_queryctrl *ctrl;
587
588 if ((c->id < V4L2_CID_BASE ||
589 c->id >= V4L2_CID_LASTP1) &&
590 (c->id < V4L2_CID_PRIVATE_BASE ||
591 c->id >= V4L2_CID_PRIVATE_LASTP1))
592 return -EINVAL;
593
594 ctrl = ctrl_by_id(c->id);
595 if (ctrl == NULL)
596 return -EINVAL;
597
598 DEB_EE(("VIDIOC_QUERYCTRL: id:%d\n", c->id));
599 *c = *ctrl;
600 return 0;
601}
602
603static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *c)
604{
605 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
606 struct saa7146_vv *vv = dev->vv_data;
607 const struct v4l2_queryctrl *ctrl;
608 u32 value = 0;
609
610 ctrl = ctrl_by_id(c->id);
611 if (NULL == ctrl)
612 return -EINVAL;
613 switch (c->id) {
614 case V4L2_CID_BRIGHTNESS:
615 value = saa7146_read(dev, BCS_CTRL);
616 c->value = 0xff & (value >> 24);
617 DEB_D(("V4L2_CID_BRIGHTNESS: %d\n", c->value));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 break;
Hans Verkuilb9600742009-01-18 19:59:11 -0300619 case V4L2_CID_CONTRAST:
620 value = saa7146_read(dev, BCS_CTRL);
621 c->value = 0x7f & (value >> 16);
622 DEB_D(("V4L2_CID_CONTRAST: %d\n", c->value));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 break;
Hans Verkuilb9600742009-01-18 19:59:11 -0300624 case V4L2_CID_SATURATION:
625 value = saa7146_read(dev, BCS_CTRL);
626 c->value = 0x7f & (value >> 0);
627 DEB_D(("V4L2_CID_SATURATION: %d\n", c->value));
628 break;
629 case V4L2_CID_VFLIP:
630 c->value = vv->vflip;
631 DEB_D(("V4L2_CID_VFLIP: %d\n", c->value));
632 break;
633 case V4L2_CID_HFLIP:
634 c->value = vv->hflip;
635 DEB_D(("V4L2_CID_HFLIP: %d\n", c->value));
636 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 default:
Hans Verkuilb9600742009-01-18 19:59:11 -0300638 return -EINVAL;
639 }
640 return 0;
641}
642
643static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *c)
644{
645 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
646 struct saa7146_vv *vv = dev->vv_data;
647 const struct v4l2_queryctrl *ctrl;
648
649 ctrl = ctrl_by_id(c->id);
650 if (NULL == ctrl) {
651 DEB_D(("unknown control %d\n", c->id));
652 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 }
654
Hans Verkuilb9600742009-01-18 19:59:11 -0300655 mutex_lock(&dev->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656
Hans Verkuilb9600742009-01-18 19:59:11 -0300657 switch (ctrl->type) {
658 case V4L2_CTRL_TYPE_BOOLEAN:
659 case V4L2_CTRL_TYPE_MENU:
660 case V4L2_CTRL_TYPE_INTEGER:
661 if (c->value < ctrl->minimum)
662 c->value = ctrl->minimum;
663 if (c->value > ctrl->maximum)
664 c->value = ctrl->maximum;
665 break;
666 default:
667 /* nothing */;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
Hans Verkuilb9600742009-01-18 19:59:11 -0300670 switch (c->id) {
671 case V4L2_CID_BRIGHTNESS: {
672 u32 value = saa7146_read(dev, BCS_CTRL);
673 value &= 0x00ffffff;
674 value |= (c->value << 24);
675 saa7146_write(dev, BCS_CTRL, value);
676 saa7146_write(dev, MC2, MASK_22 | MASK_06);
677 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300679 case V4L2_CID_CONTRAST: {
680 u32 value = saa7146_read(dev, BCS_CTRL);
681 value &= 0xff00ffff;
682 value |= (c->value << 16);
683 saa7146_write(dev, BCS_CTRL, value);
684 saa7146_write(dev, MC2, MASK_22 | MASK_06);
685 break;
686 }
687 case V4L2_CID_SATURATION: {
688 u32 value = saa7146_read(dev, BCS_CTRL);
689 value &= 0xffffff00;
690 value |= (c->value << 0);
691 saa7146_write(dev, BCS_CTRL, value);
692 saa7146_write(dev, MC2, MASK_22 | MASK_06);
693 break;
694 }
695 case V4L2_CID_HFLIP:
696 /* fixme: we can support changing VFLIP and HFLIP here... */
697 if (IS_CAPTURE_ACTIVE(fh) != 0) {
698 DEB_D(("V4L2_CID_HFLIP while active capture.\n"));
699 mutex_unlock(&dev->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 return -EINVAL;
701 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300702 vv->hflip = c->value;
703 break;
704 case V4L2_CID_VFLIP:
705 if (IS_CAPTURE_ACTIVE(fh) != 0) {
706 DEB_D(("V4L2_CID_VFLIP while active capture.\n"));
707 mutex_unlock(&dev->lock);
708 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300710 vv->vflip = c->value;
711 break;
712 default:
Ingo Molnar3593cab2006-02-07 06:49:14 -0200713 mutex_unlock(&dev->lock);
Hans Verkuilb9600742009-01-18 19:59:11 -0300714 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300716 mutex_unlock(&dev->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
Hans Verkuilb9600742009-01-18 19:59:11 -0300718 if (IS_OVERLAY_ACTIVE(fh) != 0) {
719 saa7146_stop_preview(fh);
720 saa7146_start_preview(fh);
721 }
722 return 0;
723}
724
725static int vidioc_g_parm(struct file *file, void *fh,
726 struct v4l2_streamparm *parm)
727{
728 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
729 return -EINVAL;
730 parm->parm.capture.readbuffers = 1;
731 /* fixme: only for PAL! */
732 parm->parm.capture.timeperframe.numerator = 1;
733 parm->parm.capture.timeperframe.denominator = 25;
734 return 0;
735}
736
737static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
738{
739 f->fmt.pix = ((struct saa7146_fh *)fh)->video_fmt;
740 return 0;
741}
742
743static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
744{
745 f->fmt.win = ((struct saa7146_fh *)fh)->ov.win;
746 return 0;
747}
748
749static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f)
750{
751 f->fmt.vbi = ((struct saa7146_fh *)fh)->vbi_fmt;
752 return 0;
753}
754
755static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
756{
757 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
758 struct saa7146_vv *vv = dev->vv_data;
759 struct saa7146_format *fmt;
760 enum v4l2_field field;
761 int maxw, maxh;
762 int calc_bpl;
763
764 DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh));
765
766 fmt = format_by_fourcc(dev, f->fmt.pix.pixelformat);
767 if (NULL == fmt)
768 return -EINVAL;
769
770 field = f->fmt.pix.field;
771 maxw = vv->standard->h_max_out;
772 maxh = vv->standard->v_max_out;
773
774 if (V4L2_FIELD_ANY == field) {
775 field = (f->fmt.pix.height > maxh / 2)
776 ? V4L2_FIELD_INTERLACED
777 : V4L2_FIELD_BOTTOM;
778 }
779 switch (field) {
780 case V4L2_FIELD_ALTERNATE:
781 vv->last_field = V4L2_FIELD_TOP;
782 maxh = maxh / 2;
783 break;
784 case V4L2_FIELD_TOP:
785 case V4L2_FIELD_BOTTOM:
786 vv->last_field = V4L2_FIELD_INTERLACED;
787 maxh = maxh / 2;
788 break;
789 case V4L2_FIELD_INTERLACED:
790 vv->last_field = V4L2_FIELD_INTERLACED;
791 break;
792 default:
793 DEB_D(("no known field mode '%d'.\n", field));
794 return -EINVAL;
795 }
796
797 f->fmt.pix.field = field;
798 if (f->fmt.pix.width > maxw)
799 f->fmt.pix.width = maxw;
800 if (f->fmt.pix.height > maxh)
801 f->fmt.pix.height = maxh;
802
803 calc_bpl = (f->fmt.pix.width * fmt->depth) / 8;
804
805 if (f->fmt.pix.bytesperline < calc_bpl)
806 f->fmt.pix.bytesperline = calc_bpl;
807
808 if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */
809 f->fmt.pix.bytesperline = calc_bpl;
810
811 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
812 DEB_D(("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n", f->fmt.pix.width,
813 f->fmt.pix.height, f->fmt.pix.bytesperline, f->fmt.pix.sizeimage));
814
815 return 0;
816}
817
818
819static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
820{
821 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
822 struct saa7146_vv *vv = dev->vv_data;
823 struct v4l2_window *win = &f->fmt.win;
824 enum v4l2_field field;
825 int maxw, maxh;
826
827 DEB_EE(("dev:%p\n", dev));
828
829 if (NULL == vv->ov_fb.base) {
830 DEB_D(("no fb base set.\n"));
831 return -EINVAL;
832 }
833 if (NULL == vv->ov_fmt) {
834 DEB_D(("no fb fmt set.\n"));
835 return -EINVAL;
836 }
837 if (win->w.width < 48 || win->w.height < 32) {
838 DEB_D(("min width/height. (%d,%d)\n", win->w.width, win->w.height));
839 return -EINVAL;
840 }
841 if (win->clipcount > 16) {
842 DEB_D(("clipcount too big.\n"));
843 return -EINVAL;
844 }
845
846 field = win->field;
847 maxw = vv->standard->h_max_out;
848 maxh = vv->standard->v_max_out;
849
850 if (V4L2_FIELD_ANY == field) {
851 field = (win->w.height > maxh / 2)
852 ? V4L2_FIELD_INTERLACED
853 : V4L2_FIELD_TOP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300855 switch (field) {
856 case V4L2_FIELD_TOP:
857 case V4L2_FIELD_BOTTOM:
858 case V4L2_FIELD_ALTERNATE:
859 maxh = maxh / 2;
860 break;
861 case V4L2_FIELD_INTERLACED:
862 break;
863 default:
864 DEB_D(("no known field mode '%d'.\n", field));
865 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Hans Verkuilb9600742009-01-18 19:59:11 -0300868 win->field = field;
869 if (win->w.width > maxw)
870 win->w.width = maxw;
871 if (win->w.height > maxh)
872 win->w.height = maxh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873
Hans Verkuilb9600742009-01-18 19:59:11 -0300874 return 0;
875}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
Hans Verkuilb9600742009-01-18 19:59:11 -0300877static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f)
878{
879 struct saa7146_fh *fh = __fh;
880 struct saa7146_dev *dev = fh->dev;
881 struct saa7146_vv *vv = dev->vv_data;
882 int err;
883
884 DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh));
885 if (IS_CAPTURE_ACTIVE(fh) != 0) {
886 DEB_EE(("streaming capture is active\n"));
887 return -EBUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300889 err = vidioc_try_fmt_vid_cap(file, fh, f);
890 if (0 != err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 return err;
Hans Verkuilb9600742009-01-18 19:59:11 -0300892 fh->video_fmt = f->fmt.pix;
893 DEB_EE(("set to pixelformat '%4.4s'\n", (char *)&fh->video_fmt.pixelformat));
894 return 0;
895}
896
897static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f)
898{
899 struct saa7146_fh *fh = __fh;
900 struct saa7146_dev *dev = fh->dev;
901 struct saa7146_vv *vv = dev->vv_data;
902 int err;
903
904 DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh));
905 err = vidioc_try_fmt_vid_overlay(file, fh, f);
906 if (0 != err)
907 return err;
908 mutex_lock(&dev->lock);
909 fh->ov.win = f->fmt.win;
910 fh->ov.nclips = f->fmt.win.clipcount;
911 if (fh->ov.nclips > 16)
912 fh->ov.nclips = 16;
913 if (copy_from_user(fh->ov.clips, f->fmt.win.clips,
914 sizeof(struct v4l2_clip) * fh->ov.nclips)) {
915 mutex_unlock(&dev->lock);
916 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300918
919 /* fh->ov.fh is used to indicate that we have valid overlay informations, too */
920 fh->ov.fh = fh;
921
922 mutex_unlock(&dev->lock);
923
924 /* check if our current overlay is active */
925 if (IS_OVERLAY_ACTIVE(fh) != 0) {
926 saa7146_stop_preview(fh);
927 saa7146_start_preview(fh);
Mauro Carvalho Chehabafd1a0c2005-12-12 00:37:27 -0800928 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300929 return 0;
930}
931
932static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm)
933{
934 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
935 struct saa7146_vv *vv = dev->vv_data;
936
937 *norm = vv->standard->id;
938 return 0;
939}
940
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 /* the saa7146 supfhrts (used in conjunction with the saa7111a for example)
942 PAL / NTSC / SECAM. if your hardware does not (or does more)
943 -- override this function in your extension */
Hans Verkuilb9600742009-01-18 19:59:11 -0300944/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945 case VIDIOC_ENUMSTD:
946 {
947 struct v4l2_standard *e = arg;
948 if (e->index < 0 )
949 return -EINVAL;
950 if( e->index < dev->ext_vv_data->num_stds ) {
951 DEB_EE(("VIDIOC_ENUMSTD: index:%d\n",e->index));
952 v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name);
953 return 0;
954 }
955 return -EINVAL;
956 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300957 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Hans Verkuilb9600742009-01-18 19:59:11 -0300959static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id)
960{
961 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
962 struct saa7146_vv *vv = dev->vv_data;
963 int found = 0;
964 int err, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965
Hans Verkuilb9600742009-01-18 19:59:11 -0300966 DEB_EE(("VIDIOC_S_STD\n"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967
Hans Verkuilb9600742009-01-18 19:59:11 -0300968 if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) {
969 DEB_D(("cannot change video standard while streaming capture is active\n"));
970 return -EBUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
Hans Verkuilb9600742009-01-18 19:59:11 -0300973 if ((vv->video_status & STATUS_OVERLAY) != 0) {
974 vv->ov_suspend = vv->video_fh;
975 err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976 if (0 != err) {
Hans Verkuilb9600742009-01-18 19:59:11 -0300977 DEB_D(("suspending video failed. aborting\n"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 return err;
Hans Verkuilb9600742009-01-18 19:59:11 -0300979 }
980 }
Brandon Philips49ee7182007-10-05 16:26:27 -0300981
Hans Verkuilb9600742009-01-18 19:59:11 -0300982 mutex_lock(&dev->lock);
983
984 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
985 if (*id & dev->ext_vv_data->stds[i].id)
986 break;
987 if (i != dev->ext_vv_data->num_stds) {
988 vv->standard = &dev->ext_vv_data->stds[i];
989 if (NULL != dev->ext_vv_data->std_callback)
990 dev->ext_vv_data->std_callback(dev, vv->standard);
991 found = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992 }
Hans Verkuilb9600742009-01-18 19:59:11 -0300993
994 mutex_unlock(&dev->lock);
995
996 if (vv->ov_suspend != NULL) {
997 saa7146_start_preview(vv->ov_suspend);
998 vv->ov_suspend = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 }
Hans Verkuilb9600742009-01-18 19:59:11 -03001000
1001 if (!found) {
1002 DEB_EE(("VIDIOC_S_STD: standard not found.\n"));
1003 return -EINVAL;
1004 }
1005
1006 DEB_EE(("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 return 0;
1008}
1009
Hans Verkuilb9600742009-01-18 19:59:11 -03001010static int vidioc_overlay(struct file *file, void *fh, unsigned int on)
1011{
1012 int err;
1013
1014 DEB_D(("VIDIOC_OVERLAY on:%d\n", on));
1015 if (on)
1016 err = saa7146_start_preview(fh);
1017 else
1018 err = saa7146_stop_preview(fh);
1019 return err;
1020}
1021
1022static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b)
1023{
1024 struct saa7146_fh *fh = __fh;
1025
1026 if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1027 return videobuf_reqbufs(&fh->video_q, b);
1028 if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1029 return videobuf_reqbufs(&fh->vbi_q, b);
1030 return -EINVAL;
1031}
1032
1033static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
1034{
1035 struct saa7146_fh *fh = __fh;
1036
1037 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1038 return videobuf_querybuf(&fh->video_q, buf);
1039 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1040 return videobuf_querybuf(&fh->vbi_q, buf);
1041 return -EINVAL;
1042}
1043
1044static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
1045{
1046 struct saa7146_fh *fh = __fh;
1047
1048 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1049 return videobuf_qbuf(&fh->video_q, buf);
1050 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1051 return videobuf_qbuf(&fh->vbi_q, buf);
1052 return -EINVAL;
1053}
1054
1055static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
1056{
1057 struct saa7146_fh *fh = __fh;
1058
1059 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1060 return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK);
1061 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1062 return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK);
1063 return -EINVAL;
1064}
1065
1066static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type)
1067{
1068 struct saa7146_fh *fh = __fh;
1069 int err;
1070
1071 DEB_D(("VIDIOC_STREAMON, type:%d\n", type));
1072
1073 err = video_begin(fh);
1074 if (err)
1075 return err;
1076 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1077 return videobuf_streamon(&fh->video_q);
1078 if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
1079 return videobuf_streamon(&fh->vbi_q);
1080 return -EINVAL;
1081}
1082
1083static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type)
1084{
1085 struct saa7146_fh *fh = __fh;
1086 struct saa7146_dev *dev = fh->dev;
1087 struct saa7146_vv *vv = dev->vv_data;
1088 int err;
1089
1090 DEB_D(("VIDIOC_STREAMOFF, type:%d\n", type));
1091
1092 /* ugly: we need to copy some checks from video_end(),
1093 because videobuf_streamoff() relies on the capture running.
1094 check and fix this */
1095 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
1096 DEB_S(("not capturing.\n"));
1097 return 0;
1098 }
1099
1100 if (vv->video_fh != fh) {
1101 DEB_S(("capturing, but in another open.\n"));
1102 return -EBUSY;
1103 }
1104
1105 err = -EINVAL;
1106 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1107 err = videobuf_streamoff(&fh->video_q);
1108 else if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
1109 err = videobuf_streamoff(&fh->vbi_q);
1110 if (0 != err) {
1111 DEB_D(("warning: videobuf_streamoff() failed.\n"));
1112 video_end(fh, file);
1113 } else {
1114 err = video_end(fh, file);
1115 }
1116 return err;
1117}
1118
Hans Verkuil1b8dac12009-02-07 11:18:05 -03001119static int vidioc_g_chip_ident(struct file *file, void *__fh,
1120 struct v4l2_dbg_chip_ident *chip)
1121{
1122 struct saa7146_fh *fh = __fh;
1123 struct saa7146_dev *dev = fh->dev;
1124
1125 chip->ident = V4L2_IDENT_NONE;
1126 chip->revision = 0;
1127 if (v4l2_chip_match_host(&chip->match)) {
1128 chip->ident = V4L2_IDENT_SAA7146;
1129 return 0;
1130 }
1131 return v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1132 core, g_chip_ident, chip);
1133}
1134
Hans Verkuilb9600742009-01-18 19:59:11 -03001135#ifdef CONFIG_VIDEO_V4L1_COMPAT
1136static int vidiocgmbuf(struct file *file, void *__fh, struct video_mbuf *mbuf)
1137{
1138 struct saa7146_fh *fh = __fh;
1139 struct videobuf_queue *q = &fh->video_q;
1140 int err, i;
1141
1142 /* fixme: number of capture buffers and sizes for v4l apps */
1143 int gbuffers = 2;
1144 int gbufsize = 768 * 576 * 4;
1145
1146 DEB_D(("VIDIOCGMBUF \n"));
1147
1148 q = &fh->video_q;
1149 err = videobuf_mmap_setup(q, gbuffers, gbufsize,
1150 V4L2_MEMORY_MMAP);
1151 if (err < 0)
1152 return err;
1153
1154 gbuffers = err;
1155 memset(mbuf, 0, sizeof(*mbuf));
1156 mbuf->frames = gbuffers;
1157 mbuf->size = gbuffers * gbufsize;
1158 for (i = 0; i < gbuffers; i++)
1159 mbuf->offsets[i] = i * gbufsize;
1160 return 0;
1161}
1162#endif
1163
1164const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = {
1165 .vidioc_querycap = vidioc_querycap,
1166 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1167 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1168 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1169 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1170 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1171 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1172 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1173 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1174 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
Hans Verkuil1b8dac12009-02-07 11:18:05 -03001175 .vidioc_g_chip_ident = vidioc_g_chip_ident,
Hans Verkuilb9600742009-01-18 19:59:11 -03001176
1177 .vidioc_overlay = vidioc_overlay,
1178 .vidioc_g_fbuf = vidioc_g_fbuf,
1179 .vidioc_s_fbuf = vidioc_s_fbuf,
1180 .vidioc_reqbufs = vidioc_reqbufs,
1181 .vidioc_querybuf = vidioc_querybuf,
1182 .vidioc_qbuf = vidioc_qbuf,
1183 .vidioc_dqbuf = vidioc_dqbuf,
1184 .vidioc_g_std = vidioc_g_std,
1185 .vidioc_s_std = vidioc_s_std,
1186 .vidioc_queryctrl = vidioc_queryctrl,
1187 .vidioc_g_ctrl = vidioc_g_ctrl,
1188 .vidioc_s_ctrl = vidioc_s_ctrl,
1189 .vidioc_streamon = vidioc_streamon,
1190 .vidioc_streamoff = vidioc_streamoff,
1191 .vidioc_g_parm = vidioc_g_parm,
1192#ifdef CONFIG_VIDEO_V4L1_COMPAT
1193 .vidiocgmbuf = vidiocgmbuf,
1194#endif
1195};
1196
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197/*********************************************************************************/
1198/* buffer handling functions */
1199
1200static int buffer_activate (struct saa7146_dev *dev,
1201 struct saa7146_buf *buf,
1202 struct saa7146_buf *next)
1203{
1204 struct saa7146_vv *vv = dev->vv_data;
1205
Brandon Philips0fc06862007-11-06 20:02:36 -03001206 buf->vb.state = VIDEOBUF_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 saa7146_set_capture(dev,buf,next);
1208
1209 mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT);
1210 return 0;
1211}
1212
1213static int buffer_prepare(struct videobuf_queue *q,
1214 struct videobuf_buffer *vb, enum v4l2_field field)
1215{
1216 struct file *file = q->priv_data;
1217 struct saa7146_fh *fh = file->private_data;
1218 struct saa7146_dev *dev = fh->dev;
1219 struct saa7146_vv *vv = dev->vv_data;
1220 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1221 int size,err = 0;
1222
1223 DEB_CAP(("vbuf:%p\n",vb));
1224
1225 /* sanity checks */
1226 if (fh->video_fmt.width < 48 ||
1227 fh->video_fmt.height < 32 ||
1228 fh->video_fmt.width > vv->standard->h_max_out ||
1229 fh->video_fmt.height > vv->standard->v_max_out) {
1230 DEB_D(("w (%d) / h (%d) out of bounds.\n",fh->video_fmt.width,fh->video_fmt.height));
1231 return -EINVAL;
1232 }
1233
1234 size = fh->video_fmt.sizeimage;
1235 if (0 != buf->vb.baddr && buf->vb.bsize < size) {
1236 DEB_D(("size mismatch.\n"));
1237 return -EINVAL;
1238 }
1239
1240 DEB_CAP(("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n",
1241 fh->video_fmt.width,fh->video_fmt.height,size,v4l2_field_names[fh->video_fmt.field]));
1242 if (buf->vb.width != fh->video_fmt.width ||
1243 buf->vb.bytesperline != fh->video_fmt.bytesperline ||
1244 buf->vb.height != fh->video_fmt.height ||
1245 buf->vb.size != size ||
1246 buf->vb.field != field ||
1247 buf->vb.field != fh->video_fmt.field ||
1248 buf->fmt != &fh->video_fmt) {
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -03001249 saa7146_dma_free(dev,q,buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250 }
1251
Brandon Philips0fc06862007-11-06 20:02:36 -03001252 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 struct saa7146_format *sfmt;
1254
1255 buf->vb.bytesperline = fh->video_fmt.bytesperline;
1256 buf->vb.width = fh->video_fmt.width;
1257 buf->vb.height = fh->video_fmt.height;
1258 buf->vb.size = size;
1259 buf->vb.field = field;
1260 buf->fmt = &fh->video_fmt;
1261 buf->vb.field = fh->video_fmt.field;
1262
1263 sfmt = format_by_fourcc(dev,buf->fmt->pixelformat);
1264
1265 if( 0 != IS_PLANAR(sfmt->trans)) {
1266 saa7146_pgtable_free(dev->pci, &buf->pt[0]);
1267 saa7146_pgtable_free(dev->pci, &buf->pt[1]);
1268 saa7146_pgtable_free(dev->pci, &buf->pt[2]);
1269
1270 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1271 saa7146_pgtable_alloc(dev->pci, &buf->pt[1]);
1272 saa7146_pgtable_alloc(dev->pci, &buf->pt[2]);
1273 } else {
1274 saa7146_pgtable_free(dev->pci, &buf->pt[0]);
1275 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1276 }
1277
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -03001278 err = videobuf_iolock(q,&buf->vb, &vv->ov_fb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 if (err)
1280 goto oops;
1281 err = saa7146_pgtable_build(dev,buf);
1282 if (err)
1283 goto oops;
1284 }
Brandon Philips0fc06862007-11-06 20:02:36 -03001285 buf->vb.state = VIDEOBUF_PREPARED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286 buf->activate = buffer_activate;
1287
1288 return 0;
1289
1290 oops:
1291 DEB_D(("error out.\n"));
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -03001292 saa7146_dma_free(dev,q,buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293
1294 return err;
1295}
1296
1297static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1298{
1299 struct file *file = q->priv_data;
1300 struct saa7146_fh *fh = file->private_data;
1301
1302 if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS)
1303 *count = MAX_SAA7146_CAPTURE_BUFFERS;
1304
1305 *size = fh->video_fmt.sizeimage;
1306
1307 /* check if we exceed the "max_memory" parameter */
1308 if( (*count * *size) > (max_memory*1048576) ) {
1309 *count = (max_memory*1048576) / *size;
1310 }
1311
1312 DEB_CAP(("%d buffers, %d bytes each.\n",*count,*size));
1313
1314 return 0;
1315}
1316
1317static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1318{
1319 struct file *file = q->priv_data;
1320 struct saa7146_fh *fh = file->private_data;
1321 struct saa7146_dev *dev = fh->dev;
1322 struct saa7146_vv *vv = dev->vv_data;
1323 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1324
1325 DEB_CAP(("vbuf:%p\n",vb));
1326 saa7146_buffer_queue(fh->dev,&vv->video_q,buf);
1327}
1328
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1330{
1331 struct file *file = q->priv_data;
1332 struct saa7146_fh *fh = file->private_data;
1333 struct saa7146_dev *dev = fh->dev;
1334 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1335
1336 DEB_CAP(("vbuf:%p\n",vb));
Mauro Carvalho Chehabc7b0ac02006-03-10 12:29:15 -03001337 saa7146_dma_free(dev,q,buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338}
1339
1340static struct videobuf_queue_ops video_qops = {
1341 .buf_setup = buffer_setup,
1342 .buf_prepare = buffer_prepare,
1343 .buf_queue = buffer_queue,
1344 .buf_release = buffer_release,
1345};
1346
1347/********************************************************************************/
1348/* file operations */
1349
1350static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv)
1351{
Mauro Carvalho Chehabafd1a0c2005-12-12 00:37:27 -08001352 INIT_LIST_HEAD(&vv->video_q.queue);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353
1354 init_timer(&vv->video_q.timeout);
1355 vv->video_q.timeout.function = saa7146_buffer_timeout;
1356 vv->video_q.timeout.data = (unsigned long)(&vv->video_q);
1357 vv->video_q.dev = dev;
1358
1359 /* set some default values */
1360 vv->standard = &dev->ext_vv_data->stds[0];
1361
1362 /* FIXME: what's this? */
1363 vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A;
1364 vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A;
1365}
1366
1367
1368static int video_open(struct saa7146_dev *dev, struct file *file)
1369{
1370 struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
1371 struct saa7146_format *sfmt;
1372
1373 fh->video_fmt.width = 384;
1374 fh->video_fmt.height = 288;
1375 fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24;
1376 fh->video_fmt.bytesperline = 0;
1377 fh->video_fmt.field = V4L2_FIELD_ANY;
1378 sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
1379 fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8;
1380
Guennadi Liakhovetski07051352008-04-22 14:42:13 -03001381 videobuf_queue_sg_init(&fh->video_q, &video_qops,
1382 &dev->pci->dev, &dev->slock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 V4L2_BUF_TYPE_VIDEO_CAPTURE,
1384 V4L2_FIELD_INTERLACED,
1385 sizeof(struct saa7146_buf),
1386 file);
1387
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388 return 0;
1389}
1390
1391
1392static void video_close(struct saa7146_dev *dev, struct file *file)
1393{
1394 struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
1395 struct saa7146_vv *vv = dev->vv_data;
Hartmut Birr2970c492007-04-22 06:57:26 -03001396 struct videobuf_queue *q = &fh->video_q;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 int err;
1398
1399 if (IS_CAPTURE_ACTIVE(fh) != 0) {
1400 err = video_end(fh, file);
1401 } else if (IS_OVERLAY_ACTIVE(fh) != 0) {
1402 err = saa7146_stop_preview(fh);
1403 }
1404
Brandon Philips19bc5132007-11-13 20:05:38 -03001405 videobuf_stop(q);
Hartmut Birr2970c492007-04-22 06:57:26 -03001406
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 /* hmm, why is this function declared void? */
1408 /* return err */
1409}
1410
1411
1412static void video_irq_done(struct saa7146_dev *dev, unsigned long st)
1413{
1414 struct saa7146_vv *vv = dev->vv_data;
1415 struct saa7146_dmaqueue *q = &vv->video_q;
1416
1417 spin_lock(&dev->slock);
1418 DEB_CAP(("called.\n"));
1419
1420 /* only finish the buffer if we have one... */
1421 if( NULL != q->curr ) {
Brandon Philips0fc06862007-11-06 20:02:36 -03001422 saa7146_buffer_finish(dev,q,VIDEOBUF_DONE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 }
1424 saa7146_buffer_next(dev,q,0);
1425
1426 spin_unlock(&dev->slock);
1427}
1428
1429static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
1430{
1431 struct saa7146_fh *fh = file->private_data;
1432 struct saa7146_dev *dev = fh->dev;
1433 struct saa7146_vv *vv = dev->vv_data;
1434 ssize_t ret = 0;
1435
1436 DEB_EE(("called.\n"));
1437
1438 if ((vv->video_status & STATUS_CAPTURE) != 0) {
1439 /* fixme: should we allow read() captures while streaming capture? */
1440 if (vv->video_fh == fh) {
1441 DEB_S(("already capturing.\n"));
1442 return -EBUSY;
1443 }
1444 DEB_S(("already capturing in another open.\n"));
1445 return -EBUSY;
1446 }
1447
1448 ret = video_begin(fh);
1449 if( 0 != ret) {
1450 goto out;
1451 }
1452
1453 ret = videobuf_read_one(&fh->video_q , data, count, ppos,
1454 file->f_flags & O_NONBLOCK);
1455 if (ret != 0) {
1456 video_end(fh, file);
1457 } else {
1458 ret = video_end(fh, file);
1459 }
1460out:
1461 /* restart overlay if it was active before */
1462 if (vv->ov_suspend != NULL) {
1463 saa7146_start_preview(vv->ov_suspend);
1464 vv->ov_suspend = NULL;
1465 }
1466
1467 return ret;
1468}
1469
1470struct saa7146_use_ops saa7146_video_uops = {
1471 .init = video_init,
1472 .open = video_open,
1473 .release = video_close,
1474 .irq_done = video_irq_done,
1475 .read = video_read,
1476};