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[media] saa7146: rename vbi/video_q to vbi/video_dmaq
[mirror_ubuntu-jammy-kernel.git] / drivers / media / common / saa7146_video.c
CommitLineData
44d0b80e
JP		 1#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
2
1da177e4 3#include <media/saa7146_vv.h>
1b8dac15 4#include <media/v4l2-chip-ident.h>
7a707b89 5#include <linux/module.h>
1da177e4
LT		 6
7static int max_memory = 32;
8
9module_param(max_memory, int, 0644);
10MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)");
11
12#define IS_CAPTURE_ACTIVE(fh) \
13 (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh))
14
15#define IS_OVERLAY_ACTIVE(fh) \
16 (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh))
17
18/* format descriptions for capture and preview */
19static struct saa7146_format formats[] = {
20 {
21 .name = "RGB-8 (3-3-2)",
22 .pixelformat = V4L2_PIX_FMT_RGB332,
23 .trans = RGB08_COMPOSED,
24 .depth = 8,
25 .flags = 0,
26 }, {
27 .name = "RGB-16 (5/B-6/G-5/R)",
28 .pixelformat = V4L2_PIX_FMT_RGB565,
29 .trans = RGB16_COMPOSED,
30 .depth = 16,
31 .flags = 0,
32 }, {
33 .name = "RGB-24 (B-G-R)",
34 .pixelformat = V4L2_PIX_FMT_BGR24,
35 .trans = RGB24_COMPOSED,
36 .depth = 24,
37 .flags = 0,
38 }, {
39 .name = "RGB-32 (B-G-R)",
40 .pixelformat = V4L2_PIX_FMT_BGR32,
41 .trans = RGB32_COMPOSED,
42 .depth = 32,
43 .flags = 0,
44 }, {
45 .name = "RGB-32 (R-G-B)",
46 .pixelformat = V4L2_PIX_FMT_RGB32,
47 .trans = RGB32_COMPOSED,
48 .depth = 32,
49 .flags = 0,
50 .swap = 0x2,
51 }, {
52 .name = "Greyscale-8",
53 .pixelformat = V4L2_PIX_FMT_GREY,
54 .trans = Y8,
55 .depth = 8,
56 .flags = 0,
57 }, {
58 .name = "YUV 4:2:2 planar (Y-Cb-Cr)",
59 .pixelformat = V4L2_PIX_FMT_YUV422P,
60 .trans = YUV422_DECOMPOSED,
61 .depth = 16,
62 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
63 }, {
64 .name = "YVU 4:2:0 planar (Y-Cb-Cr)",
65 .pixelformat = V4L2_PIX_FMT_YVU420,
66 .trans = YUV420_DECOMPOSED,
67 .depth = 12,
68 .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
69 }, {
70 .name = "YUV 4:2:0 planar (Y-Cb-Cr)",
71 .pixelformat = V4L2_PIX_FMT_YUV420,
72 .trans = YUV420_DECOMPOSED,
73 .depth = 12,
74 .flags = FORMAT_IS_PLANAR,
75 }, {
76 .name = "YUV 4:2:2 (U-Y-V-Y)",
77 .pixelformat = V4L2_PIX_FMT_UYVY,
78 .trans = YUV422_COMPOSED,
79 .depth = 16,
80 .flags = 0,
81 }
82};
83
84/* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps.
85 due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped
86 (like V4L2_PIX_FMT_YUYV) ... 8-( */
87
88static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format);
89
a757ee22 90struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc)
1da177e4
LT		 91{
92 int i, j = NUM_FORMATS;
93
94 for (i = 0; i < j; i++) {
95 if (formats[i].pixelformat == fourcc) {
96 return formats+i;
97 }
98 }
99
44d0b80e 100 DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc);
1da177e4
LT		 101 return NULL;
102}
103
b960074f 104static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f);
1da177e4
LT		 105
106int saa7146_start_preview(struct saa7146_fh *fh)
107{
108 struct saa7146_dev *dev = fh->dev;
109 struct saa7146_vv *vv = dev->vv_data;
b960074f 110 struct v4l2_format fmt;
1da177e4
LT		 111 int ret = 0, err = 0;
112
44d0b80e 113 DEB_EE("dev:%p, fh:%p\n", dev, fh);
1da177e4 114
5da545ad
HV		 115 /* check if we have overlay information */
116 if (vv->ov.fh == NULL) {
44d0b80e 117 DEB_D("no overlay data available. try S_FMT first.\n");
1da177e4
LT		 118 return -EAGAIN;
119 }
120
121 /* check if streaming capture is running */
122 if (IS_CAPTURE_ACTIVE(fh) != 0) {
44d0b80e 123 DEB_D("streaming capture is active\n");
1da177e4
LT		 124 return -EBUSY;
125 }
126
127 /* check if overlay is running */
128 if (IS_OVERLAY_ACTIVE(fh) != 0) {
129 if (vv->video_fh == fh) {
44d0b80e 130 DEB_D("overlay is already active\n");
1da177e4
LT		 131 return 0;
132 }
44d0b80e 133 DEB_D("overlay is already active in another open\n");
1da177e4
LT		 134 return -EBUSY;
135 }
136
137 if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) {
44d0b80e 138 DEB_D("cannot get necessary overlay resources\n");
1da177e4
LT		 139 return -EBUSY;
140 }
141
5da545ad 142 fmt.fmt.win = vv->ov.win;
b960074f 143 err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt);
1da177e4
LT		 144 if (0 != err) {
145 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
146 return -EBUSY;
147 }
5da545ad 148 vv->ov.win = fmt.fmt.win;
1da177e4 149
44d0b80e 150 DEB_D("%dx%d+%d+%d %s field=%s\n",
5da545ad
HV		 151 vv->ov.win.w.width, vv->ov.win.w.height,
152 vv->ov.win.w.left, vv->ov.win.w.top,
153 vv->ov_fmt->name, v4l2_field_names[vv->ov.win.field]);
1da177e4
LT		 154
155 if (0 != (ret = saa7146_enable_overlay(fh))) {
44d0b80e 156 DEB_D("enabling overlay failed: %d\n", ret);
1da177e4
LT		 157 saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
158 return ret;
159 }
160
161 vv->video_status = STATUS_OVERLAY;
162 vv->video_fh = fh;
163
164 return 0;
165}
5d7dc8c4 166EXPORT_SYMBOL_GPL(saa7146_start_preview);
1da177e4
LT		 167
168int saa7146_stop_preview(struct saa7146_fh *fh)
169{
170 struct saa7146_dev *dev = fh->dev;
171 struct saa7146_vv *vv = dev->vv_data;
172
44d0b80e 173 DEB_EE("dev:%p, fh:%p\n", dev, fh);
1da177e4
LT		 174
175 /* check if streaming capture is running */
176 if (IS_CAPTURE_ACTIVE(fh) != 0) {
44d0b80e 177 DEB_D("streaming capture is active\n");
1da177e4
LT		 178 return -EBUSY;
179 }
180
181 /* check if overlay is running at all */
182 if ((vv->video_status & STATUS_OVERLAY) == 0) {
44d0b80e 183 DEB_D("no active overlay\n");
1da177e4
LT		 184 return 0;
185 }
186
187 if (vv->video_fh != fh) {
44d0b80e 188 DEB_D("overlay is active, but in another open\n");
1da177e4
LT		 189 return -EBUSY;
190 }
191
192 vv->video_status = 0;
193 vv->video_fh = NULL;
194
195 saa7146_disable_overlay(fh);
196
197 saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
198
199 return 0;
200}
5d7dc8c4 201EXPORT_SYMBOL_GPL(saa7146_stop_preview);
1da177e4 202
1da177e4
LT		 203/********************************************************************************/
204/* common pagetable functions */
205
206static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf)
207{
208 struct pci_dev *pci = dev->pci;
c1accaa2
MCC		 209 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
210 struct scatterlist *list = dma->sglist;
211 int length = dma->sglen;
a757ee22 212 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
1da177e4 213
44d0b80e 214 DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length);
1da177e4
LT		 215
216 if( 0 != IS_PLANAR(sfmt->trans)) {
217 struct saa7146_pgtable *pt1 = &buf->pt[0];
218 struct saa7146_pgtable *pt2 = &buf->pt[1];
219 struct saa7146_pgtable *pt3 = &buf->pt[2];
a36ef6b1
AV		 220 __le32 *ptr1, *ptr2, *ptr3;
221 __le32 fill;
1da177e4
LT		 222
223 int size = buf->fmt->width*buf->fmt->height;
224 int i,p,m1,m2,m3,o1,o2;
225
226 switch( sfmt->depth ) {
227 case 12: {
228 /* create some offsets inside the page table */
229 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
230 m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1;
231 m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
232 o1 = size%PAGE_SIZE;
233 o2 = (size+(size/4))%PAGE_SIZE;
44d0b80e
JP		 234 DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
235 size, m1, m2, m3, o1, o2);
1da177e4
LT		 236 break;
237 }
238 case 16: {
239 /* create some offsets inside the page table */
240 m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
241 m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
242 m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1;
243 o1 = size%PAGE_SIZE;
244 o2 = (size+(size/2))%PAGE_SIZE;
44d0b80e
JP		 245 DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
246 size, m1, m2, m3, o1, o2);
1da177e4
LT		 247 break;
248 }
249 default: {
250 return -1;
251 }
252 }
253
254 ptr1 = pt1->cpu;
255 ptr2 = pt2->cpu;
256 ptr3 = pt3->cpu;
257
258 /* walk all pages, copy all page addresses to ptr1 */
259 for (i = 0; i < length; i++, list++) {
260 for (p = 0; p * 4096 < list->length; p++, ptr1++) {
261 *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset);
262 }
263 }
264/*
265 ptr1 = pt1->cpu;
266 for(j=0;j<40;j++) {
267 printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
268 }
269*/
270
271 /* if we have a user buffer, the first page may not be
272 aligned to a page boundary. */
429e9089 273 pt1->offset = dma->sglist->offset;
1da177e4
LT		 274 pt2->offset = pt1->offset+o1;
275 pt3->offset = pt1->offset+o2;
276
277 /* create video-dma2 page table */
278 ptr1 = pt1->cpu;
279 for(i = m1; i <= m2 ; i++, ptr2++) {
280 *ptr2 = ptr1[i];
281 }
282 fill = *(ptr2-1);
283 for(;i<1024;i++,ptr2++) {
284 *ptr2 = fill;
285 }
286 /* create video-dma3 page table */
287 ptr1 = pt1->cpu;
288 for(i = m2; i <= m3; i++,ptr3++) {
289 *ptr3 = ptr1[i];
290 }
291 fill = *(ptr3-1);
292 for(;i<1024;i++,ptr3++) {
293 *ptr3 = fill;
294 }
295 /* finally: finish up video-dma1 page table */
296 ptr1 = pt1->cpu+m1;
297 fill = pt1->cpu[m1];
298 for(i=m1;i<1024;i++,ptr1++) {
299 *ptr1 = fill;
300 }
301/*
302 ptr1 = pt1->cpu;
303 ptr2 = pt2->cpu;
304 ptr3 = pt3->cpu;
305 for(j=0;j<40;j++) {
306 printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
307 }
308 for(j=0;j<40;j++) {
309 printk("ptr2 %d: 0x%08x\n",j,ptr2[j]);
310 }
311 for(j=0;j<40;j++) {
312 printk("ptr3 %d: 0x%08x\n",j,ptr3[j]);
313 }
314*/
315 } else {
316 struct saa7146_pgtable *pt = &buf->pt[0];
317 return saa7146_pgtable_build_single(pci, pt, list, length);
318 }
319
320 return 0;
321}
322
323
324/********************************************************************************/
325/* file operations */
326
327static int video_begin(struct saa7146_fh *fh)
328{
329 struct saa7146_dev *dev = fh->dev;
330 struct saa7146_vv *vv = dev->vv_data;
331 struct saa7146_format *fmt = NULL;
332 unsigned int resource;
333 int ret = 0, err = 0;
334
44d0b80e 335 DEB_EE("dev:%p, fh:%p\n", dev, fh);
1da177e4
LT		 336
337 if ((vv->video_status & STATUS_CAPTURE) != 0) {
338 if (vv->video_fh == fh) {
44d0b80e 339 DEB_S("already capturing\n");
1da177e4
LT		 340 return 0;
341 }
44d0b80e 342 DEB_S("already capturing in another open\n");
1da177e4
LT		 343 return -EBUSY;
344 }
345
346 if ((vv->video_status & STATUS_OVERLAY) != 0) {
44d0b80e 347 DEB_S("warning: suspending overlay video for streaming capture\n");
1da177e4
LT		 348 vv->ov_suspend = vv->video_fh;
349 err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
350 if (0 != err) {
44d0b80e 351 DEB_D("suspending video failed. aborting\n");
1da177e4
LT		 352 return err;
353 }
354 }
355
fd74d6eb 356 fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
1da177e4
LT		 357 /* we need to have a valid format set here */
358 BUG_ON(NULL == fmt);
359
360 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
361 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
362 } else {
363 resource = RESOURCE_DMA1_HPS;
364 }
365
366 ret = saa7146_res_get(fh, resource);
367 if (0 == ret) {
44d0b80e 368 DEB_S("cannot get capture resource %d\n", resource);
1da177e4
LT		 369 if (vv->ov_suspend != NULL) {
370 saa7146_start_preview(vv->ov_suspend);
371 vv->ov_suspend = NULL;
372 }
373 return -EBUSY;
374 }
375
376 /* clear out beginning of streaming bit (rps register 0)*/
377 saa7146_write(dev, MC2, MASK_27 );
378
379 /* enable rps0 irqs */
380 SAA7146_IER_ENABLE(dev, MASK_27);
381
382 vv->video_fh = fh;
383 vv->video_status = STATUS_CAPTURE;
384
385 return 0;
386}
387
388static int video_end(struct saa7146_fh *fh, struct file *file)
389{
390 struct saa7146_dev *dev = fh->dev;
391 struct saa7146_vv *vv = dev->vv_data;
392 struct saa7146_format *fmt = NULL;
393 unsigned long flags;
394 unsigned int resource;
395 u32 dmas = 0;
44d0b80e 396 DEB_EE("dev:%p, fh:%p\n", dev, fh);
1da177e4
LT		 397
398 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
44d0b80e 399 DEB_S("not capturing\n");
1da177e4
LT		 400 return 0;
401 }
402
403 if (vv->video_fh != fh) {
44d0b80e 404 DEB_S("capturing, but in another open\n");
1da177e4
LT		 405 return -EBUSY;
406 }
407
fd74d6eb 408 fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
1da177e4
LT		 409 /* we need to have a valid format set here */
410 BUG_ON(NULL == fmt);
411
412 if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
413 resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
414 dmas = MASK_22 | MASK_21 | MASK_20;
415 } else {
416 resource = RESOURCE_DMA1_HPS;
417 dmas = MASK_22;
418 }
419 spin_lock_irqsave(&dev->slock,flags);
420
421 /* disable rps0 */
422 saa7146_write(dev, MC1, MASK_28);
423
424 /* disable rps0 irqs */
425 SAA7146_IER_DISABLE(dev, MASK_27);
426
427 /* shut down all used video dma transfers */
428 saa7146_write(dev, MC1, dmas);
429
430 spin_unlock_irqrestore(&dev->slock, flags);
431
432 vv->video_fh = NULL;
433 vv->video_status = 0;
434
435 saa7146_res_free(fh, resource);
436
437 if (vv->ov_suspend != NULL) {
438 saa7146_start_preview(vv->ov_suspend);
439 vv->ov_suspend = NULL;
440 }
441
442 return 0;
443}
444
b960074f
HV		 445static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
446{
447 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
448
449 strcpy((char *)cap->driver, "saa7146 v4l2");
450 strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card));
451 sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci));
452 cap->version = SAA7146_VERSION_CODE;
6e65ca94 453 cap->device_caps =
b960074f
HV		 454 V4L2_CAP_VIDEO_CAPTURE |
455 V4L2_CAP_VIDEO_OVERLAY |
456 V4L2_CAP_READWRITE |
457 V4L2_CAP_STREAMING;
6e65ca94
HV		 458 cap->device_caps |= dev->ext_vv_data->capabilities;
459 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
b960074f
HV		 460 return 0;
461}
1da177e4 462
b960074f 463static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb)
1da177e4 464{
b960074f 465 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
1da177e4
LT		 466 struct saa7146_vv *vv = dev->vv_data;
467
b960074f
HV		 468 *fb = vv->ov_fb;
469 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
5da545ad 470 fb->flags = V4L2_FBUF_FLAG_PRIMARY;
b960074f
HV		 471 return 0;
472}
1da177e4 473
b960074f
HV		 474static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb)
475{
476 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
477 struct saa7146_vv *vv = dev->vv_data;
478 struct saa7146_format *fmt;
1da177e4 479
44d0b80e 480 DEB_EE("VIDIOC_S_FBUF\n");
1da177e4 481
b960074f
HV		 482 if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
483 return -EPERM;
1da177e4 484
b960074f 485 /* check args */
a757ee22 486 fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat);
b960074f
HV		 487 if (NULL == fmt)
488 return -EINVAL;
1da177e4 489
b960074f
HV		 490 /* planar formats are not allowed for overlay video, clipping and video dma would clash */
491 if (fmt->flags & FORMAT_IS_PLANAR)
44d0b80e
JP		 492 DEB_S("planar pixelformat '%4.4s' not allowed for overlay\n",
493 (char *)&fmt->pixelformat);
b960074f
HV		 494
495 /* check if overlay is running */
496 if (IS_OVERLAY_ACTIVE(fh) != 0) {
497 if (vv->video_fh != fh) {
44d0b80e 498 DEB_D("refusing to change framebuffer informations while overlay is active in another open\n");
b960074f
HV		 499 return -EBUSY;
500 }
1da177e4
LT		 501 }
502
b960074f
HV		 503 /* ok, accept it */
504 vv->ov_fb = *fb;
505 vv->ov_fmt = fmt;
84a1d9c8
MH		 506
507 if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) {
508 vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8;
44d0b80e 509 DEB_D("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline);
84a1d9c8 510 }
b960074f
HV		 511 return 0;
512}
513
514static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
515{
516 if (f->index >= NUM_FORMATS)
517 return -EINVAL;
518 strlcpy((char *)f->description, formats[f->index].name,
519 sizeof(f->description));
520 f->pixelformat = formats[f->index].pixelformat;
521 return 0;
522}
523
6e65ca94 524int saa7146_s_ctrl(struct v4l2_ctrl *ctrl)
b960074f 525{
6e65ca94
HV		 526 struct saa7146_dev *dev = container_of(ctrl->handler,
527 struct saa7146_dev, ctrl_handler);
b960074f 528 struct saa7146_vv *vv = dev->vv_data;
6e65ca94 529 u32 val;
b960074f 530
6e65ca94 531 switch (ctrl->id) {
b960074f 532 case V4L2_CID_BRIGHTNESS:
6e65ca94
HV		 533 val = saa7146_read(dev, BCS_CTRL);
534 val &= 0x00ffffff;
535 val |= (ctrl->val << 24);
536 saa7146_write(dev, BCS_CTRL, val);
b960074f
HV		 537 saa7146_write(dev, MC2, MASK_22 | MASK_06);
538 break;
6e65ca94
HV		 539
540 case V4L2_CID_CONTRAST:
541 val = saa7146_read(dev, BCS_CTRL);
542 val &= 0xff00ffff;
543 val |= (ctrl->val << 16);
544 saa7146_write(dev, BCS_CTRL, val);
b960074f
HV		 545 saa7146_write(dev, MC2, MASK_22 | MASK_06);
546 break;
6e65ca94
HV		 547
548 case V4L2_CID_SATURATION:
549 val = saa7146_read(dev, BCS_CTRL);
550 val &= 0xffffff00;
551 val |= (ctrl->val << 0);
552 saa7146_write(dev, BCS_CTRL, val);
b960074f
HV		 553 saa7146_write(dev, MC2, MASK_22 | MASK_06);
554 break;
6e65ca94 555
b960074f
HV		 556 case V4L2_CID_HFLIP:
557 /* fixme: we can support changing VFLIP and HFLIP here... */
6e65ca94 558 if ((vv->video_status & STATUS_CAPTURE))
5a5b9647 559 return -EBUSY;
6e65ca94 560 vv->hflip = ctrl->val;
b960074f 561 break;
6e65ca94 562
b960074f 563 case V4L2_CID_VFLIP:
6e65ca94 564 if ((vv->video_status & STATUS_CAPTURE))
5a5b9647 565 return -EBUSY;
6e65ca94 566 vv->vflip = ctrl->val;
b960074f 567 break;
6e65ca94 568
b960074f 569 default:
b960074f
HV		 570 return -EINVAL;
571 }
1da177e4 572
6e65ca94
HV		 573 if ((vv->video_status & STATUS_OVERLAY) != 0) { /* CHECK: && (vv->video_fh == fh)) */
574 struct saa7146_fh *fh = vv->video_fh;
575
b960074f
HV		 576 saa7146_stop_preview(fh);
577 saa7146_start_preview(fh);
578 }
579 return 0;
580}
1da177e4 581
b960074f
HV		 582static int vidioc_g_parm(struct file *file, void *fh,
583 struct v4l2_streamparm *parm)
584{
717167e8
TP		 585 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
586 struct saa7146_vv *vv = dev->vv_data;
587
6e65ca94
HV		 588 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
589 return -EINVAL;
b960074f 590 parm->parm.capture.readbuffers = 1;
717167e8
TP		 591 v4l2_video_std_frame_period(vv->standard->id,
592 &parm->parm.capture.timeperframe);
b960074f
HV		 593 return 0;
594}
1da177e4 595
b960074f
HV		 596static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
597{
fd74d6eb
HV		 598 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
599 struct saa7146_vv *vv = dev->vv_data;
600
601 f->fmt.pix = vv->video_fmt;
b960074f
HV		 602 return 0;
603}
1da177e4 604
b960074f
HV		 605static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
606{
5da545ad
HV		 607 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
608 struct saa7146_vv *vv = dev->vv_data;
609
610 f->fmt.win = vv->ov.win;
b960074f
HV		 611 return 0;
612}
1da177e4 613
b960074f
HV		 614static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f)
615{
fca3469a
HV		 616 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
617 struct saa7146_vv *vv = dev->vv_data;
618
619 f->fmt.vbi = vv->vbi_fmt;
b960074f
HV		 620 return 0;
621}
1da177e4 622
b960074f
HV		 623static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
624{
625 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
626 struct saa7146_vv *vv = dev->vv_data;
627 struct saa7146_format *fmt;
628 enum v4l2_field field;
629 int maxw, maxh;
630 int calc_bpl;
631
44d0b80e 632 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh);
b960074f 633
a757ee22 634 fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat);
b960074f
HV		 635 if (NULL == fmt)
636 return -EINVAL;
637
638 field = f->fmt.pix.field;
639 maxw = vv->standard->h_max_out;
640 maxh = vv->standard->v_max_out;
641
642 if (V4L2_FIELD_ANY == field) {
643 field = (f->fmt.pix.height > maxh / 2)
644 ? V4L2_FIELD_INTERLACED
645 : V4L2_FIELD_BOTTOM;
646 }
647 switch (field) {
648 case V4L2_FIELD_ALTERNATE:
649 vv->last_field = V4L2_FIELD_TOP;
650 maxh = maxh / 2;
651 break;
652 case V4L2_FIELD_TOP:
653 case V4L2_FIELD_BOTTOM:
654 vv->last_field = V4L2_FIELD_INTERLACED;
655 maxh = maxh / 2;
656 break;
657 case V4L2_FIELD_INTERLACED:
658 vv->last_field = V4L2_FIELD_INTERLACED;
659 break;
660 default:
44d0b80e 661 DEB_D("no known field mode '%d'\n", field);
b960074f 662 return -EINVAL;
1da177e4 663 }
1da177e4 664
b960074f 665 f->fmt.pix.field = field;
6e65ca94 666 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
b960074f
HV		 667 if (f->fmt.pix.width > maxw)
668 f->fmt.pix.width = maxw;
669 if (f->fmt.pix.height > maxh)
670 f->fmt.pix.height = maxh;
1da177e4 671
b960074f 672 calc_bpl = (f->fmt.pix.width * fmt->depth) / 8;
1da177e4 673
b960074f
HV		 674 if (f->fmt.pix.bytesperline < calc_bpl)
675 f->fmt.pix.bytesperline = calc_bpl;
676
677 if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */
678 f->fmt.pix.bytesperline = calc_bpl;
679
680 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
44d0b80e
JP		 681 DEB_D("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n",
682 f->fmt.pix.width, f->fmt.pix.height,
683 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
b960074f
HV		 684
685 return 0;
686}
687
688
689static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
690{
691 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
692 struct saa7146_vv *vv = dev->vv_data;
693 struct v4l2_window *win = &f->fmt.win;
694 enum v4l2_field field;
695 int maxw, maxh;
696
44d0b80e 697 DEB_EE("dev:%p\n", dev);
b960074f
HV		 698
699 if (NULL == vv->ov_fb.base) {
44d0b80e 700 DEB_D("no fb base set\n");
b960074f 701 return -EINVAL;
1da177e4 702 }
b960074f 703 if (NULL == vv->ov_fmt) {
44d0b80e 704 DEB_D("no fb fmt set\n");
b960074f 705 return -EINVAL;
1da177e4 706 }
b960074f 707 if (win->w.width < 48 || win->w.height < 32) {
44d0b80e
JP		 708 DEB_D("min width/height. (%d,%d)\n",
709 win->w.width, win->w.height);
b960074f 710 return -EINVAL;
1da177e4 711 }
b960074f 712 if (win->clipcount > 16) {
44d0b80e 713 DEB_D("clipcount too big\n");
b960074f 714 return -EINVAL;
afd1a0c9 715 }
b960074f
HV		 716
717 field = win->field;
718 maxw = vv->standard->h_max_out;
719 maxh = vv->standard->v_max_out;
720
721 if (V4L2_FIELD_ANY == field) {
722 field = (win->w.height > maxh / 2)
723 ? V4L2_FIELD_INTERLACED
724 : V4L2_FIELD_TOP;
725 }
726 switch (field) {
727 case V4L2_FIELD_TOP:
728 case V4L2_FIELD_BOTTOM:
729 case V4L2_FIELD_ALTERNATE:
730 maxh = maxh / 2;
731 break;
732 case V4L2_FIELD_INTERLACED:
733 break;
734 default:
44d0b80e 735 DEB_D("no known field mode '%d'\n", field);
b960074f 736 return -EINVAL;
1da177e4 737 }
b960074f
HV		 738
739 win->field = field;
740 if (win->w.width > maxw)
741 win->w.width = maxw;
742 if (win->w.height > maxh)
743 win->w.height = maxh;
744
745 return 0;
746}
747
748static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f)
749{
750 struct saa7146_fh *fh = __fh;
751 struct saa7146_dev *dev = fh->dev;
752 struct saa7146_vv *vv = dev->vv_data;
753 int err;
754
44d0b80e 755 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh);
b960074f 756 if (IS_CAPTURE_ACTIVE(fh) != 0) {
44d0b80e 757 DEB_EE("streaming capture is active\n");
b960074f 758 return -EBUSY;
1da177e4 759 }
b960074f
HV		 760 err = vidioc_try_fmt_vid_cap(file, fh, f);
761 if (0 != err)
762 return err;
fd74d6eb 763 vv->video_fmt = f->fmt.pix;
44d0b80e 764 DEB_EE("set to pixelformat '%4.4s'\n",
fd74d6eb 765 (char *)&vv->video_fmt.pixelformat);
b960074f
HV		 766 return 0;
767}
768
769static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f)
770{
771 struct saa7146_fh *fh = __fh;
772 struct saa7146_dev *dev = fh->dev;
773 struct saa7146_vv *vv = dev->vv_data;
774 int err;
775
44d0b80e 776 DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh);
b960074f
HV		 777 err = vidioc_try_fmt_vid_overlay(file, fh, f);
778 if (0 != err)
779 return err;
5da545ad
HV		 780 vv->ov.win = f->fmt.win;
781 vv->ov.nclips = f->fmt.win.clipcount;
782 if (vv->ov.nclips > 16)
783 vv->ov.nclips = 16;
784 if (copy_from_user(vv->ov.clips, f->fmt.win.clips,
785 sizeof(struct v4l2_clip) * vv->ov.nclips)) {
b960074f 786 return -EFAULT;
1da177e4 787 }
b960074f 788
5da545ad
HV		 789 /* vv->ov.fh is used to indicate that we have valid overlay informations, too */
790 vv->ov.fh = fh;
b960074f 791
b960074f
HV		 792 /* check if our current overlay is active */
793 if (IS_OVERLAY_ACTIVE(fh) != 0) {
794 saa7146_stop_preview(fh);
795 saa7146_start_preview(fh);
1da177e4 796 }
b960074f
HV		 797 return 0;
798}
799
800static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm)
801{
802 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
803 struct saa7146_vv *vv = dev->vv_data;
804
805 *norm = vv->standard->id;
806 return 0;
807}
808
1da177e4
LT		 809 /* the saa7146 supfhrts (used in conjunction with the saa7111a for example)
810 PAL / NTSC / SECAM. if your hardware does not (or does more)
811 -- override this function in your extension */
b960074f 812/*
1da177e4
LT		 813 case VIDIOC_ENUMSTD:
814 {
815 struct v4l2_standard *e = arg;
816 if (e->index < 0 )
817 return -EINVAL;
818 if( e->index < dev->ext_vv_data->num_stds ) {
44d0b80e 819 DEB_EE("VIDIOC_ENUMSTD: index:%d\n", e->index);
1da177e4
LT		 820 v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name);
821 return 0;
822 }
823 return -EINVAL;
824 }
b960074f 825 */
1da177e4 826
b960074f
HV		 827static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id)
828{
829 struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
830 struct saa7146_vv *vv = dev->vv_data;
831 int found = 0;
832 int err, i;
1da177e4 833
44d0b80e 834 DEB_EE("VIDIOC_S_STD\n");
1da177e4 835
b960074f 836 if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) {
44d0b80e 837 DEB_D("cannot change video standard while streaming capture is active\n");
b960074f
HV		 838 return -EBUSY;
839 }
1da177e4 840
b960074f
HV		 841 if ((vv->video_status & STATUS_OVERLAY) != 0) {
842 vv->ov_suspend = vv->video_fh;
843 err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
844 if (0 != err) {
44d0b80e 845 DEB_D("suspending video failed. aborting\n");
b960074f 846 return err;
1da177e4 847 }
b960074f 848 }
1da177e4 849
b960074f
HV		 850 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
851 if (*id & dev->ext_vv_data->stds[i].id)
852 break;
853 if (i != dev->ext_vv_data->num_stds) {
854 vv->standard = &dev->ext_vv_data->stds[i];
855 if (NULL != dev->ext_vv_data->std_callback)
856 dev->ext_vv_data->std_callback(dev, vv->standard);
857 found = 1;
858 }
1da177e4 859
b960074f
HV		 860 if (vv->ov_suspend != NULL) {
861 saa7146_start_preview(vv->ov_suspend);
862 vv->ov_suspend = NULL;
1da177e4 863 }
1da177e4 864
b960074f 865 if (!found) {
44d0b80e 866 DEB_EE("VIDIOC_S_STD: standard not found\n");
b960074f 867 return -EINVAL;
1da177e4 868 }
1da177e4 869
44d0b80e 870 DEB_EE("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name);
b960074f
HV		 871 return 0;
872}
1da177e4 873
b960074f
HV		 874static int vidioc_overlay(struct file *file, void *fh, unsigned int on)
875{
876 int err;
1da177e4 877
44d0b80e 878 DEB_D("VIDIOC_OVERLAY on:%d\n", on);
b960074f
HV		 879 if (on)
880 err = saa7146_start_preview(fh);
881 else
882 err = saa7146_stop_preview(fh);
883 return err;
884}
1da177e4 885
b960074f
HV		 886static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b)
887{
888 struct saa7146_fh *fh = __fh;
1da177e4 889
b960074f
HV		 890 if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
891 return videobuf_reqbufs(&fh->video_q, b);
892 if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE)
893 return videobuf_reqbufs(&fh->vbi_q, b);
894 return -EINVAL;
895}
1da177e4 896
b960074f
HV		 897static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
898{
899 struct saa7146_fh *fh = __fh;
1da177e4 900
b960074f
HV		 901 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
902 return videobuf_querybuf(&fh->video_q, buf);
903 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
904 return videobuf_querybuf(&fh->vbi_q, buf);
905 return -EINVAL;
906}
1da177e4 907
b960074f
HV		 908static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
909{
910 struct saa7146_fh *fh = __fh;
911
912 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
913 return videobuf_qbuf(&fh->video_q, buf);
914 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
915 return videobuf_qbuf(&fh->vbi_q, buf);
916 return -EINVAL;
917}
49ee718e 918
b960074f
HV		 919static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf)
920{
921 struct saa7146_fh *fh = __fh;
922
923 if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
924 return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK);
925 if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE)
926 return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK);
927 return -EINVAL;
928}
929
930static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type)
931{
932 struct saa7146_fh *fh = __fh;
933 int err;
934
44d0b80e 935 DEB_D("VIDIOC_STREAMON, type:%d\n", type);
b960074f
HV		 936
937 err = video_begin(fh);
938 if (err)
939 return err;
940 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
941 return videobuf_streamon(&fh->video_q);
942 if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
943 return videobuf_streamon(&fh->vbi_q);
944 return -EINVAL;
945}
946
947static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type)
948{
949 struct saa7146_fh *fh = __fh;
950 struct saa7146_dev *dev = fh->dev;
951 struct saa7146_vv *vv = dev->vv_data;
952 int err;
953
44d0b80e 954 DEB_D("VIDIOC_STREAMOFF, type:%d\n", type);
b960074f
HV		 955
956 /* ugly: we need to copy some checks from video_end(),
957 because videobuf_streamoff() relies on the capture running.
958 check and fix this */
959 if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
44d0b80e 960 DEB_S("not capturing\n");
1da177e4
LT		 961 return 0;
962 }
b960074f
HV		 963
964 if (vv->video_fh != fh) {
44d0b80e 965 DEB_S("capturing, but in another open\n");
b960074f 966 return -EBUSY;
1da177e4 967 }
b960074f
HV		 968
969 err = -EINVAL;
970 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
971 err = videobuf_streamoff(&fh->video_q);
972 else if (type == V4L2_BUF_TYPE_VBI_CAPTURE)
973 err = videobuf_streamoff(&fh->vbi_q);
974 if (0 != err) {
44d0b80e 975 DEB_D("warning: videobuf_streamoff() failed\n");
b960074f
HV		 976 video_end(fh, file);
977 } else {
978 err = video_end(fh, file);
979 }
980 return err;
981}
982
1b8dac15
HV		 983static int vidioc_g_chip_ident(struct file *file, void *__fh,
984 struct v4l2_dbg_chip_ident *chip)
985{
986 struct saa7146_fh *fh = __fh;
987 struct saa7146_dev *dev = fh->dev;
988
989 chip->ident = V4L2_IDENT_NONE;
990 chip->revision = 0;
eae4d69b 991 if (chip->match.type == V4L2_CHIP_MATCH_HOST && !chip->match.addr) {
1b8dac15
HV		 992 chip->ident = V4L2_IDENT_SAA7146;
993 return 0;
994 }
995 return v4l2_device_call_until_err(&dev->v4l2_dev, 0,
996 core, g_chip_ident, chip);
997}
998
b960074f
HV		 999const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = {
1000 .vidioc_querycap = vidioc_querycap,
1001 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
717167e8 1002 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap,
b960074f
HV		 1003 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1004 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1005 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1006 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1007 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1008 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1009 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1b8dac15 1010 .vidioc_g_chip_ident = vidioc_g_chip_ident,
b960074f
HV		 1011
1012 .vidioc_overlay = vidioc_overlay,
1013 .vidioc_g_fbuf = vidioc_g_fbuf,
1014 .vidioc_s_fbuf = vidioc_s_fbuf,
1015 .vidioc_reqbufs = vidioc_reqbufs,
1016 .vidioc_querybuf = vidioc_querybuf,
1017 .vidioc_qbuf = vidioc_qbuf,
1018 .vidioc_dqbuf = vidioc_dqbuf,
1019 .vidioc_g_std = vidioc_g_std,
1020 .vidioc_s_std = vidioc_s_std,
b960074f
HV		 1021 .vidioc_streamon = vidioc_streamon,
1022 .vidioc_streamoff = vidioc_streamoff,
1023 .vidioc_g_parm = vidioc_g_parm,
b960074f 1024};
1da177e4
LT		 1025
1026/*********************************************************************************/
1027/* buffer handling functions */
1028
1029static int buffer_activate (struct saa7146_dev *dev,
1030 struct saa7146_buf *buf,
1031 struct saa7146_buf *next)
1032{
1033 struct saa7146_vv *vv = dev->vv_data;
1034
0fc0686e 1035 buf->vb.state = VIDEOBUF_ACTIVE;
1da177e4
LT		 1036 saa7146_set_capture(dev,buf,next);
1037
9bb60193 1038 mod_timer(&vv->video_dmaq.timeout, jiffies+BUFFER_TIMEOUT);
1da177e4
LT		 1039 return 0;
1040}
1041
311c70e1
JF		 1042static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf)
1043{
1044 saa7146_pgtable_free(dev->pci, &buf->pt[0]);
1045 saa7146_pgtable_free(dev->pci, &buf->pt[1]);
1046 saa7146_pgtable_free(dev->pci, &buf->pt[2]);
1047}
1048
1da177e4
LT		 1049static int buffer_prepare(struct videobuf_queue *q,
1050 struct videobuf_buffer *vb, enum v4l2_field field)
1051{
1052 struct file *file = q->priv_data;
1053 struct saa7146_fh *fh = file->private_data;
1054 struct saa7146_dev *dev = fh->dev;
1055 struct saa7146_vv *vv = dev->vv_data;
1056 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1057 int size,err = 0;
1058
44d0b80e 1059 DEB_CAP("vbuf:%p\n", vb);
1da177e4
LT		 1060
1061 /* sanity checks */
fd74d6eb
HV		 1062 if (vv->video_fmt.width < 48 ||
1063 vv->video_fmt.height < 32 ||
1064 vv->video_fmt.width > vv->standard->h_max_out ||
1065 vv->video_fmt.height > vv->standard->v_max_out) {
44d0b80e 1066 DEB_D("w (%d) / h (%d) out of bounds\n",
fd74d6eb 1067 vv->video_fmt.width, vv->video_fmt.height);
1da177e4
LT		 1068 return -EINVAL;
1069 }
1070
fd74d6eb 1071 size = vv->video_fmt.sizeimage;
1da177e4 1072 if (0 != buf->vb.baddr && buf->vb.bsize < size) {
44d0b80e 1073 DEB_D("size mismatch\n");
1da177e4
LT		 1074 return -EINVAL;
1075 }
1076
44d0b80e 1077 DEB_CAP("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n",
fd74d6eb
HV		 1078 vv->video_fmt.width, vv->video_fmt.height,
1079 size, v4l2_field_names[vv->video_fmt.field]);
1080 if (buf->vb.width != vv->video_fmt.width ||
1081 buf->vb.bytesperline != vv->video_fmt.bytesperline ||
1082 buf->vb.height != vv->video_fmt.height ||
1da177e4
LT		 1083 buf->vb.size != size ||
1084 buf->vb.field != field ||
fd74d6eb
HV		 1085 buf->vb.field != vv->video_fmt.field ||
1086 buf->fmt != &vv->video_fmt) {
c7b0ac05 1087 saa7146_dma_free(dev,q,buf);
1da177e4
LT		 1088 }
1089
0fc0686e 1090 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
1da177e4
LT		 1091 struct saa7146_format *sfmt;
1092
fd74d6eb
HV		 1093 buf->vb.bytesperline = vv->video_fmt.bytesperline;
1094 buf->vb.width = vv->video_fmt.width;
1095 buf->vb.height = vv->video_fmt.height;
1da177e4
LT		 1096 buf->vb.size = size;
1097 buf->vb.field = field;
fd74d6eb
HV		 1098 buf->fmt = &vv->video_fmt;
1099 buf->vb.field = vv->video_fmt.field;
1da177e4 1100
a757ee22 1101 sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
1da177e4 1102
311c70e1 1103 release_all_pagetables(dev, buf);
1da177e4 1104 if( 0 != IS_PLANAR(sfmt->trans)) {
1da177e4
LT		 1105 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1106 saa7146_pgtable_alloc(dev->pci, &buf->pt[1]);
1107 saa7146_pgtable_alloc(dev->pci, &buf->pt[2]);
1108 } else {
1da177e4
LT		 1109 saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
1110 }
1111
c7b0ac05 1112 err = videobuf_iolock(q,&buf->vb, &vv->ov_fb);
1da177e4
LT		 1113 if (err)
1114 goto oops;
1115 err = saa7146_pgtable_build(dev,buf);
1116 if (err)
1117 goto oops;
1118 }
0fc0686e 1119 buf->vb.state = VIDEOBUF_PREPARED;
1da177e4
LT		 1120 buf->activate = buffer_activate;
1121
1122 return 0;
1123
1124 oops:
44d0b80e 1125 DEB_D("error out\n");
c7b0ac05 1126 saa7146_dma_free(dev,q,buf);
1da177e4
LT		 1127
1128 return err;
1129}
1130
1131static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1132{
1133 struct file *file = q->priv_data;
1134 struct saa7146_fh *fh = file->private_data;
fd74d6eb 1135 struct saa7146_vv *vv = fh->dev->vv_data;
1da177e4
LT		 1136
1137 if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS)
1138 *count = MAX_SAA7146_CAPTURE_BUFFERS;
1139
fd74d6eb 1140 *size = vv->video_fmt.sizeimage;
1da177e4
LT		 1141
1142 /* check if we exceed the "max_memory" parameter */
1143 if( (*count * *size) > (max_memory*1048576) ) {
1144 *count = (max_memory*1048576) / *size;
1145 }
1146
44d0b80e 1147 DEB_CAP("%d buffers, %d bytes each\n", *count, *size);
1da177e4
LT		 1148
1149 return 0;
1150}
1151
1152static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1153{
1154 struct file *file = q->priv_data;
1155 struct saa7146_fh *fh = file->private_data;
1156 struct saa7146_dev *dev = fh->dev;
1157 struct saa7146_vv *vv = dev->vv_data;
1158 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1159
44d0b80e 1160 DEB_CAP("vbuf:%p\n", vb);
9bb60193 1161 saa7146_buffer_queue(fh->dev, &vv->video_dmaq, buf);
1da177e4
LT		 1162}
1163
1da177e4
LT		 1164static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1165{
1166 struct file *file = q->priv_data;
1167 struct saa7146_fh *fh = file->private_data;
1168 struct saa7146_dev *dev = fh->dev;
1169 struct saa7146_buf *buf = (struct saa7146_buf *)vb;
1170
44d0b80e 1171 DEB_CAP("vbuf:%p\n", vb);
311c70e1 1172
c7b0ac05 1173 saa7146_dma_free(dev,q,buf);
ba9e9f3c
MCC		 1174
1175 release_all_pagetables(dev, buf);
1da177e4
LT		 1176}
1177
1178static struct videobuf_queue_ops video_qops = {
1179 .buf_setup = buffer_setup,
1180 .buf_prepare = buffer_prepare,
1181 .buf_queue = buffer_queue,
1182 .buf_release = buffer_release,
1183};
1184
1185/********************************************************************************/
1186/* file operations */
1187
1188static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv)
1189{
9bb60193 1190 INIT_LIST_HEAD(&vv->video_dmaq.queue);
1da177e4 1191
9bb60193
HV		 1192 init_timer(&vv->video_dmaq.timeout);
1193 vv->video_dmaq.timeout.function = saa7146_buffer_timeout;
1194 vv->video_dmaq.timeout.data = (unsigned long)(&vv->video_dmaq);
1195 vv->video_dmaq.dev = dev;
1da177e4
LT		 1196
1197 /* set some default values */
1198 vv->standard = &dev->ext_vv_data->stds[0];
1199
1200 /* FIXME: what's this? */
1201 vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A;
1202 vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A;
1203}
1204
1205
1206static int video_open(struct saa7146_dev *dev, struct file *file)
1207{
abf84383 1208 struct saa7146_fh *fh = file->private_data;
1da177e4 1209
0705135e
GL		 1210 videobuf_queue_sg_init(&fh->video_q, &video_qops,
1211 &dev->pci->dev, &dev->slock,
1da177e4
LT		 1212 V4L2_BUF_TYPE_VIDEO_CAPTURE,
1213 V4L2_FIELD_INTERLACED,
1214 sizeof(struct saa7146_buf),
9af39713 1215 file, &dev->v4l2_lock);
1da177e4 1216
1da177e4
LT		 1217 return 0;
1218}
1219
1220
1221static void video_close(struct saa7146_dev *dev, struct file *file)
1222{
abf84383 1223 struct saa7146_fh *fh = file->private_data;
1da177e4 1224 struct saa7146_vv *vv = dev->vv_data;
2970c492 1225 struct videobuf_queue *q = &fh->video_q;
1da177e4 1226
7b4668ef
HV		 1227 if (IS_CAPTURE_ACTIVE(fh) != 0)
1228 video_end(fh, file);
1229 else if (IS_OVERLAY_ACTIVE(fh) != 0)
1230 saa7146_stop_preview(fh);
1da177e4 1231
19bc5133 1232 videobuf_stop(q);
1da177e4 1233 /* hmm, why is this function declared void? */
1da177e4
LT		 1234}
1235
1236
1237static void video_irq_done(struct saa7146_dev *dev, unsigned long st)
1238{
1239 struct saa7146_vv *vv = dev->vv_data;
9bb60193 1240 struct saa7146_dmaqueue *q = &vv->video_dmaq;
1da177e4
LT		 1241
1242 spin_lock(&dev->slock);
44d0b80e 1243 DEB_CAP("called\n");
1da177e4
LT		 1244
1245 /* only finish the buffer if we have one... */
1246 if( NULL != q->curr ) {
0fc0686e 1247 saa7146_buffer_finish(dev,q,VIDEOBUF_DONE);
1da177e4
LT		 1248 }
1249 saa7146_buffer_next(dev,q,0);
1250
1251 spin_unlock(&dev->slock);
1252}
1253
1254static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
1255{
1256 struct saa7146_fh *fh = file->private_data;
1257 struct saa7146_dev *dev = fh->dev;
1258 struct saa7146_vv *vv = dev->vv_data;
1259 ssize_t ret = 0;
1260
44d0b80e 1261 DEB_EE("called\n");
1da177e4
LT		 1262
1263 if ((vv->video_status & STATUS_CAPTURE) != 0) {
1264 /* fixme: should we allow read() captures while streaming capture? */
1265 if (vv->video_fh == fh) {
44d0b80e 1266 DEB_S("already capturing\n");
1da177e4
LT		 1267 return -EBUSY;
1268 }
44d0b80e 1269 DEB_S("already capturing in another open\n");
1da177e4
LT		 1270 return -EBUSY;
1271 }
1272
1273 ret = video_begin(fh);
1274 if( 0 != ret) {
1275 goto out;
1276 }
1277
1278 ret = videobuf_read_one(&fh->video_q , data, count, ppos,
1279 file->f_flags & O_NONBLOCK);
1280 if (ret != 0) {
1281 video_end(fh, file);
1282 } else {
1283 ret = video_end(fh, file);
1284 }
1285out:
1286 /* restart overlay if it was active before */
1287 if (vv->ov_suspend != NULL) {
1288 saa7146_start_preview(vv->ov_suspend);
1289 vv->ov_suspend = NULL;
1290 }
1291
1292 return ret;
1293}
1294
1295struct saa7146_use_ops saa7146_video_uops = {
1296 .init = video_init,
1297 .open = video_open,
1298 .release = video_close,
1299 .irq_done = video_irq_done,
1300 .read = video_read,
1301};
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