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1 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
2 | ||
3 | #include <media/saa7146_vv.h> | |
4 | #include <media/v4l2-chip-ident.h> | |
5 | #include <linux/module.h> | |
6 | ||
7 | static int max_memory = 32; | |
8 | ||
9 | module_param(max_memory, int, 0644); | |
10 | MODULE_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 */ | |
19 | static 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 | ||
88 | static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); | |
89 | ||
90 | struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) | |
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 | ||
100 | DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc); | |
101 | return NULL; | |
102 | } | |
103 | ||
104 | static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f); | |
105 | ||
106 | int saa7146_start_preview(struct saa7146_fh *fh) | |
107 | { | |
108 | struct saa7146_dev *dev = fh->dev; | |
109 | struct saa7146_vv *vv = dev->vv_data; | |
110 | struct v4l2_format fmt; | |
111 | int ret = 0, err = 0; | |
112 | ||
113 | DEB_EE("dev:%p, fh:%p\n", dev, fh); | |
114 | ||
115 | /* check if we have overlay information */ | |
116 | if (vv->ov.fh == NULL) { | |
117 | DEB_D("no overlay data available. try S_FMT first.\n"); | |
118 | return -EAGAIN; | |
119 | } | |
120 | ||
121 | /* check if streaming capture is running */ | |
122 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
123 | DEB_D("streaming capture is active\n"); | |
124 | return -EBUSY; | |
125 | } | |
126 | ||
127 | /* check if overlay is running */ | |
128 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
129 | if (vv->video_fh == fh) { | |
130 | DEB_D("overlay is already active\n"); | |
131 | return 0; | |
132 | } | |
133 | DEB_D("overlay is already active in another open\n"); | |
134 | return -EBUSY; | |
135 | } | |
136 | ||
137 | if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { | |
138 | DEB_D("cannot get necessary overlay resources\n"); | |
139 | return -EBUSY; | |
140 | } | |
141 | ||
142 | fmt.fmt.win = vv->ov.win; | |
143 | err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt); | |
144 | if (0 != err) { | |
145 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); | |
146 | return -EBUSY; | |
147 | } | |
148 | vv->ov.win = fmt.fmt.win; | |
149 | ||
150 | DEB_D("%dx%d+%d+%d %s field=%s\n", | |
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]); | |
154 | ||
155 | if (0 != (ret = saa7146_enable_overlay(fh))) { | |
156 | DEB_D("enabling overlay failed: %d\n", ret); | |
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 | } | |
166 | EXPORT_SYMBOL_GPL(saa7146_start_preview); | |
167 | ||
168 | int saa7146_stop_preview(struct saa7146_fh *fh) | |
169 | { | |
170 | struct saa7146_dev *dev = fh->dev; | |
171 | struct saa7146_vv *vv = dev->vv_data; | |
172 | ||
173 | DEB_EE("dev:%p, fh:%p\n", dev, fh); | |
174 | ||
175 | /* check if streaming capture is running */ | |
176 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
177 | DEB_D("streaming capture is active\n"); | |
178 | return -EBUSY; | |
179 | } | |
180 | ||
181 | /* check if overlay is running at all */ | |
182 | if ((vv->video_status & STATUS_OVERLAY) == 0) { | |
183 | DEB_D("no active overlay\n"); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | if (vv->video_fh != fh) { | |
188 | DEB_D("overlay is active, but in another open\n"); | |
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 | } | |
201 | EXPORT_SYMBOL_GPL(saa7146_stop_preview); | |
202 | ||
203 | /********************************************************************************/ | |
204 | /* common pagetable functions */ | |
205 | ||
206 | static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) | |
207 | { | |
208 | struct pci_dev *pci = dev->pci; | |
209 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); | |
210 | struct scatterlist *list = dma->sglist; | |
211 | int length = dma->sglen; | |
212 | struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); | |
213 | ||
214 | DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length); | |
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]; | |
220 | __le32 *ptr1, *ptr2, *ptr3; | |
221 | __le32 fill; | |
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; | |
234 | DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", | |
235 | size, m1, m2, m3, o1, o2); | |
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; | |
245 | DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", | |
246 | size, m1, m2, m3, o1, o2); | |
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. */ | |
273 | pt1->offset = dma->sglist->offset; | |
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 | ||
327 | static 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 | ||
335 | DEB_EE("dev:%p, fh:%p\n", dev, fh); | |
336 | ||
337 | if ((vv->video_status & STATUS_CAPTURE) != 0) { | |
338 | if (vv->video_fh == fh) { | |
339 | DEB_S("already capturing\n"); | |
340 | return 0; | |
341 | } | |
342 | DEB_S("already capturing in another open\n"); | |
343 | return -EBUSY; | |
344 | } | |
345 | ||
346 | if ((vv->video_status & STATUS_OVERLAY) != 0) { | |
347 | DEB_S("warning: suspending overlay video for streaming capture\n"); | |
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) { | |
351 | DEB_D("suspending video failed. aborting\n"); | |
352 | return err; | |
353 | } | |
354 | } | |
355 | ||
356 | fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
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) { | |
368 | DEB_S("cannot get capture resource %d\n", resource); | |
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 | ||
388 | static 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; | |
396 | DEB_EE("dev:%p, fh:%p\n", dev, fh); | |
397 | ||
398 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { | |
399 | DEB_S("not capturing\n"); | |
400 | return 0; | |
401 | } | |
402 | ||
403 | if (vv->video_fh != fh) { | |
404 | DEB_S("capturing, but in another open\n"); | |
405 | return -EBUSY; | |
406 | } | |
407 | ||
408 | fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
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 | ||
445 | static 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; | |
453 | cap->device_caps = | |
454 | V4L2_CAP_VIDEO_CAPTURE | | |
455 | V4L2_CAP_VIDEO_OVERLAY | | |
456 | V4L2_CAP_READWRITE | | |
457 | V4L2_CAP_STREAMING; | |
458 | cap->device_caps |= dev->ext_vv_data->capabilities; | |
459 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
460 | return 0; | |
461 | } | |
462 | ||
463 | static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) | |
464 | { | |
465 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
466 | struct saa7146_vv *vv = dev->vv_data; | |
467 | ||
468 | *fb = vv->ov_fb; | |
469 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; | |
470 | fb->flags = V4L2_FBUF_FLAG_PRIMARY; | |
471 | return 0; | |
472 | } | |
473 | ||
474 | static 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; | |
479 | ||
480 | DEB_EE("VIDIOC_S_FBUF\n"); | |
481 | ||
482 | if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) | |
483 | return -EPERM; | |
484 | ||
485 | /* check args */ | |
486 | fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); | |
487 | if (NULL == fmt) | |
488 | return -EINVAL; | |
489 | ||
490 | /* planar formats are not allowed for overlay video, clipping and video dma would clash */ | |
491 | if (fmt->flags & FORMAT_IS_PLANAR) | |
492 | DEB_S("planar pixelformat '%4.4s' not allowed for overlay\n", | |
493 | (char *)&fmt->pixelformat); | |
494 | ||
495 | /* check if overlay is running */ | |
496 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
497 | if (vv->video_fh != fh) { | |
498 | DEB_D("refusing to change framebuffer informations while overlay is active in another open\n"); | |
499 | return -EBUSY; | |
500 | } | |
501 | } | |
502 | ||
503 | /* ok, accept it */ | |
504 | vv->ov_fb = *fb; | |
505 | vv->ov_fmt = fmt; | |
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; | |
509 | DEB_D("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline); | |
510 | } | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static 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 | ||
524 | int saa7146_s_ctrl(struct v4l2_ctrl *ctrl) | |
525 | { | |
526 | struct saa7146_dev *dev = container_of(ctrl->handler, | |
527 | struct saa7146_dev, ctrl_handler); | |
528 | struct saa7146_vv *vv = dev->vv_data; | |
529 | u32 val; | |
530 | ||
531 | switch (ctrl->id) { | |
532 | case V4L2_CID_BRIGHTNESS: | |
533 | val = saa7146_read(dev, BCS_CTRL); | |
534 | val &= 0x00ffffff; | |
535 | val |= (ctrl->val << 24); | |
536 | saa7146_write(dev, BCS_CTRL, val); | |
537 | saa7146_write(dev, MC2, MASK_22 | MASK_06); | |
538 | break; | |
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); | |
545 | saa7146_write(dev, MC2, MASK_22 | MASK_06); | |
546 | break; | |
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); | |
553 | saa7146_write(dev, MC2, MASK_22 | MASK_06); | |
554 | break; | |
555 | ||
556 | case V4L2_CID_HFLIP: | |
557 | /* fixme: we can support changing VFLIP and HFLIP here... */ | |
558 | if ((vv->video_status & STATUS_CAPTURE)) | |
559 | return -EBUSY; | |
560 | vv->hflip = ctrl->val; | |
561 | break; | |
562 | ||
563 | case V4L2_CID_VFLIP: | |
564 | if ((vv->video_status & STATUS_CAPTURE)) | |
565 | return -EBUSY; | |
566 | vv->vflip = ctrl->val; | |
567 | break; | |
568 | ||
569 | default: | |
570 | return -EINVAL; | |
571 | } | |
572 | ||
573 | if ((vv->video_status & STATUS_OVERLAY) != 0) { /* CHECK: && (vv->video_fh == fh)) */ | |
574 | struct saa7146_fh *fh = vv->video_fh; | |
575 | ||
576 | saa7146_stop_preview(fh); | |
577 | saa7146_start_preview(fh); | |
578 | } | |
579 | return 0; | |
580 | } | |
581 | ||
582 | static int vidioc_g_parm(struct file *file, void *fh, | |
583 | struct v4l2_streamparm *parm) | |
584 | { | |
585 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
586 | struct saa7146_vv *vv = dev->vv_data; | |
587 | ||
588 | if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
589 | return -EINVAL; | |
590 | parm->parm.capture.readbuffers = 1; | |
591 | v4l2_video_std_frame_period(vv->standard->id, | |
592 | &parm->parm.capture.timeperframe); | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) | |
597 | { | |
598 | f->fmt.pix = ((struct saa7146_fh *)fh)->video_fmt; | |
599 | return 0; | |
600 | } | |
601 | ||
602 | static int vidioc_g_fmt_vid_overlay(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.win = vv->ov.win; | |
608 | return 0; | |
609 | } | |
610 | ||
611 | static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f) | |
612 | { | |
613 | f->fmt.vbi = ((struct saa7146_fh *)fh)->vbi_fmt; | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) | |
618 | { | |
619 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
620 | struct saa7146_vv *vv = dev->vv_data; | |
621 | struct saa7146_format *fmt; | |
622 | enum v4l2_field field; | |
623 | int maxw, maxh; | |
624 | int calc_bpl; | |
625 | ||
626 | DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); | |
627 | ||
628 | fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); | |
629 | if (NULL == fmt) | |
630 | return -EINVAL; | |
631 | ||
632 | field = f->fmt.pix.field; | |
633 | maxw = vv->standard->h_max_out; | |
634 | maxh = vv->standard->v_max_out; | |
635 | ||
636 | if (V4L2_FIELD_ANY == field) { | |
637 | field = (f->fmt.pix.height > maxh / 2) | |
638 | ? V4L2_FIELD_INTERLACED | |
639 | : V4L2_FIELD_BOTTOM; | |
640 | } | |
641 | switch (field) { | |
642 | case V4L2_FIELD_ALTERNATE: | |
643 | vv->last_field = V4L2_FIELD_TOP; | |
644 | maxh = maxh / 2; | |
645 | break; | |
646 | case V4L2_FIELD_TOP: | |
647 | case V4L2_FIELD_BOTTOM: | |
648 | vv->last_field = V4L2_FIELD_INTERLACED; | |
649 | maxh = maxh / 2; | |
650 | break; | |
651 | case V4L2_FIELD_INTERLACED: | |
652 | vv->last_field = V4L2_FIELD_INTERLACED; | |
653 | break; | |
654 | default: | |
655 | DEB_D("no known field mode '%d'\n", field); | |
656 | return -EINVAL; | |
657 | } | |
658 | ||
659 | f->fmt.pix.field = field; | |
660 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
661 | if (f->fmt.pix.width > maxw) | |
662 | f->fmt.pix.width = maxw; | |
663 | if (f->fmt.pix.height > maxh) | |
664 | f->fmt.pix.height = maxh; | |
665 | ||
666 | calc_bpl = (f->fmt.pix.width * fmt->depth) / 8; | |
667 | ||
668 | if (f->fmt.pix.bytesperline < calc_bpl) | |
669 | f->fmt.pix.bytesperline = calc_bpl; | |
670 | ||
671 | if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */ | |
672 | f->fmt.pix.bytesperline = calc_bpl; | |
673 | ||
674 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; | |
675 | DEB_D("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n", | |
676 | f->fmt.pix.width, f->fmt.pix.height, | |
677 | f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
682 | ||
683 | static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) | |
684 | { | |
685 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
686 | struct saa7146_vv *vv = dev->vv_data; | |
687 | struct v4l2_window *win = &f->fmt.win; | |
688 | enum v4l2_field field; | |
689 | int maxw, maxh; | |
690 | ||
691 | DEB_EE("dev:%p\n", dev); | |
692 | ||
693 | if (NULL == vv->ov_fb.base) { | |
694 | DEB_D("no fb base set\n"); | |
695 | return -EINVAL; | |
696 | } | |
697 | if (NULL == vv->ov_fmt) { | |
698 | DEB_D("no fb fmt set\n"); | |
699 | return -EINVAL; | |
700 | } | |
701 | if (win->w.width < 48 || win->w.height < 32) { | |
702 | DEB_D("min width/height. (%d,%d)\n", | |
703 | win->w.width, win->w.height); | |
704 | return -EINVAL; | |
705 | } | |
706 | if (win->clipcount > 16) { | |
707 | DEB_D("clipcount too big\n"); | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
711 | field = win->field; | |
712 | maxw = vv->standard->h_max_out; | |
713 | maxh = vv->standard->v_max_out; | |
714 | ||
715 | if (V4L2_FIELD_ANY == field) { | |
716 | field = (win->w.height > maxh / 2) | |
717 | ? V4L2_FIELD_INTERLACED | |
718 | : V4L2_FIELD_TOP; | |
719 | } | |
720 | switch (field) { | |
721 | case V4L2_FIELD_TOP: | |
722 | case V4L2_FIELD_BOTTOM: | |
723 | case V4L2_FIELD_ALTERNATE: | |
724 | maxh = maxh / 2; | |
725 | break; | |
726 | case V4L2_FIELD_INTERLACED: | |
727 | break; | |
728 | default: | |
729 | DEB_D("no known field mode '%d'\n", field); | |
730 | return -EINVAL; | |
731 | } | |
732 | ||
733 | win->field = field; | |
734 | if (win->w.width > maxw) | |
735 | win->w.width = maxw; | |
736 | if (win->w.height > maxh) | |
737 | win->w.height = maxh; | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
742 | static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f) | |
743 | { | |
744 | struct saa7146_fh *fh = __fh; | |
745 | struct saa7146_dev *dev = fh->dev; | |
746 | struct saa7146_vv *vv = dev->vv_data; | |
747 | int err; | |
748 | ||
749 | DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); | |
750 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
751 | DEB_EE("streaming capture is active\n"); | |
752 | return -EBUSY; | |
753 | } | |
754 | err = vidioc_try_fmt_vid_cap(file, fh, f); | |
755 | if (0 != err) | |
756 | return err; | |
757 | fh->video_fmt = f->fmt.pix; | |
758 | DEB_EE("set to pixelformat '%4.4s'\n", | |
759 | (char *)&fh->video_fmt.pixelformat); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f) | |
764 | { | |
765 | struct saa7146_fh *fh = __fh; | |
766 | struct saa7146_dev *dev = fh->dev; | |
767 | struct saa7146_vv *vv = dev->vv_data; | |
768 | int err; | |
769 | ||
770 | DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh); | |
771 | err = vidioc_try_fmt_vid_overlay(file, fh, f); | |
772 | if (0 != err) | |
773 | return err; | |
774 | vv->ov.win = f->fmt.win; | |
775 | vv->ov.nclips = f->fmt.win.clipcount; | |
776 | if (vv->ov.nclips > 16) | |
777 | vv->ov.nclips = 16; | |
778 | if (copy_from_user(vv->ov.clips, f->fmt.win.clips, | |
779 | sizeof(struct v4l2_clip) * vv->ov.nclips)) { | |
780 | return -EFAULT; | |
781 | } | |
782 | ||
783 | /* vv->ov.fh is used to indicate that we have valid overlay informations, too */ | |
784 | vv->ov.fh = fh; | |
785 | ||
786 | /* check if our current overlay is active */ | |
787 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
788 | saa7146_stop_preview(fh); | |
789 | saa7146_start_preview(fh); | |
790 | } | |
791 | return 0; | |
792 | } | |
793 | ||
794 | static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm) | |
795 | { | |
796 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
797 | struct saa7146_vv *vv = dev->vv_data; | |
798 | ||
799 | *norm = vv->standard->id; | |
800 | return 0; | |
801 | } | |
802 | ||
803 | /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) | |
804 | PAL / NTSC / SECAM. if your hardware does not (or does more) | |
805 | -- override this function in your extension */ | |
806 | /* | |
807 | case VIDIOC_ENUMSTD: | |
808 | { | |
809 | struct v4l2_standard *e = arg; | |
810 | if (e->index < 0 ) | |
811 | return -EINVAL; | |
812 | if( e->index < dev->ext_vv_data->num_stds ) { | |
813 | DEB_EE("VIDIOC_ENUMSTD: index:%d\n", e->index); | |
814 | v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); | |
815 | return 0; | |
816 | } | |
817 | return -EINVAL; | |
818 | } | |
819 | */ | |
820 | ||
821 | static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id) | |
822 | { | |
823 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; | |
824 | struct saa7146_vv *vv = dev->vv_data; | |
825 | int found = 0; | |
826 | int err, i; | |
827 | ||
828 | DEB_EE("VIDIOC_S_STD\n"); | |
829 | ||
830 | if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { | |
831 | DEB_D("cannot change video standard while streaming capture is active\n"); | |
832 | return -EBUSY; | |
833 | } | |
834 | ||
835 | if ((vv->video_status & STATUS_OVERLAY) != 0) { | |
836 | vv->ov_suspend = vv->video_fh; | |
837 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ | |
838 | if (0 != err) { | |
839 | DEB_D("suspending video failed. aborting\n"); | |
840 | return err; | |
841 | } | |
842 | } | |
843 | ||
844 | for (i = 0; i < dev->ext_vv_data->num_stds; i++) | |
845 | if (*id & dev->ext_vv_data->stds[i].id) | |
846 | break; | |
847 | if (i != dev->ext_vv_data->num_stds) { | |
848 | vv->standard = &dev->ext_vv_data->stds[i]; | |
849 | if (NULL != dev->ext_vv_data->std_callback) | |
850 | dev->ext_vv_data->std_callback(dev, vv->standard); | |
851 | found = 1; | |
852 | } | |
853 | ||
854 | if (vv->ov_suspend != NULL) { | |
855 | saa7146_start_preview(vv->ov_suspend); | |
856 | vv->ov_suspend = NULL; | |
857 | } | |
858 | ||
859 | if (!found) { | |
860 | DEB_EE("VIDIOC_S_STD: standard not found\n"); | |
861 | return -EINVAL; | |
862 | } | |
863 | ||
864 | DEB_EE("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | static int vidioc_overlay(struct file *file, void *fh, unsigned int on) | |
869 | { | |
870 | int err; | |
871 | ||
872 | DEB_D("VIDIOC_OVERLAY on:%d\n", on); | |
873 | if (on) | |
874 | err = saa7146_start_preview(fh); | |
875 | else | |
876 | err = saa7146_stop_preview(fh); | |
877 | return err; | |
878 | } | |
879 | ||
880 | static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b) | |
881 | { | |
882 | struct saa7146_fh *fh = __fh; | |
883 | ||
884 | if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
885 | return videobuf_reqbufs(&fh->video_q, b); | |
886 | if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
887 | return videobuf_reqbufs(&fh->vbi_q, b); | |
888 | return -EINVAL; | |
889 | } | |
890 | ||
891 | static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf) | |
892 | { | |
893 | struct saa7146_fh *fh = __fh; | |
894 | ||
895 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
896 | return videobuf_querybuf(&fh->video_q, buf); | |
897 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
898 | return videobuf_querybuf(&fh->vbi_q, buf); | |
899 | return -EINVAL; | |
900 | } | |
901 | ||
902 | static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) | |
903 | { | |
904 | struct saa7146_fh *fh = __fh; | |
905 | ||
906 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
907 | return videobuf_qbuf(&fh->video_q, buf); | |
908 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
909 | return videobuf_qbuf(&fh->vbi_q, buf); | |
910 | return -EINVAL; | |
911 | } | |
912 | ||
913 | static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) | |
914 | { | |
915 | struct saa7146_fh *fh = __fh; | |
916 | ||
917 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
918 | return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK); | |
919 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
920 | return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK); | |
921 | return -EINVAL; | |
922 | } | |
923 | ||
924 | static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type) | |
925 | { | |
926 | struct saa7146_fh *fh = __fh; | |
927 | int err; | |
928 | ||
929 | DEB_D("VIDIOC_STREAMON, type:%d\n", type); | |
930 | ||
931 | err = video_begin(fh); | |
932 | if (err) | |
933 | return err; | |
934 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
935 | return videobuf_streamon(&fh->video_q); | |
936 | if (type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
937 | return videobuf_streamon(&fh->vbi_q); | |
938 | return -EINVAL; | |
939 | } | |
940 | ||
941 | static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type) | |
942 | { | |
943 | struct saa7146_fh *fh = __fh; | |
944 | struct saa7146_dev *dev = fh->dev; | |
945 | struct saa7146_vv *vv = dev->vv_data; | |
946 | int err; | |
947 | ||
948 | DEB_D("VIDIOC_STREAMOFF, type:%d\n", type); | |
949 | ||
950 | /* ugly: we need to copy some checks from video_end(), | |
951 | because videobuf_streamoff() relies on the capture running. | |
952 | check and fix this */ | |
953 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { | |
954 | DEB_S("not capturing\n"); | |
955 | return 0; | |
956 | } | |
957 | ||
958 | if (vv->video_fh != fh) { | |
959 | DEB_S("capturing, but in another open\n"); | |
960 | return -EBUSY; | |
961 | } | |
962 | ||
963 | err = -EINVAL; | |
964 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
965 | err = videobuf_streamoff(&fh->video_q); | |
966 | else if (type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
967 | err = videobuf_streamoff(&fh->vbi_q); | |
968 | if (0 != err) { | |
969 | DEB_D("warning: videobuf_streamoff() failed\n"); | |
970 | video_end(fh, file); | |
971 | } else { | |
972 | err = video_end(fh, file); | |
973 | } | |
974 | return err; | |
975 | } | |
976 | ||
977 | static int vidioc_g_chip_ident(struct file *file, void *__fh, | |
978 | struct v4l2_dbg_chip_ident *chip) | |
979 | { | |
980 | struct saa7146_fh *fh = __fh; | |
981 | struct saa7146_dev *dev = fh->dev; | |
982 | ||
983 | chip->ident = V4L2_IDENT_NONE; | |
984 | chip->revision = 0; | |
985 | if (chip->match.type == V4L2_CHIP_MATCH_HOST && !chip->match.addr) { | |
986 | chip->ident = V4L2_IDENT_SAA7146; | |
987 | return 0; | |
988 | } | |
989 | return v4l2_device_call_until_err(&dev->v4l2_dev, 0, | |
990 | core, g_chip_ident, chip); | |
991 | } | |
992 | ||
993 | const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = { | |
994 | .vidioc_querycap = vidioc_querycap, | |
995 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
996 | .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap, | |
997 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
998 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
999 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
1000 | .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, | |
1001 | .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, | |
1002 | .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, | |
1003 | .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, | |
1004 | .vidioc_g_chip_ident = vidioc_g_chip_ident, | |
1005 | ||
1006 | .vidioc_overlay = vidioc_overlay, | |
1007 | .vidioc_g_fbuf = vidioc_g_fbuf, | |
1008 | .vidioc_s_fbuf = vidioc_s_fbuf, | |
1009 | .vidioc_reqbufs = vidioc_reqbufs, | |
1010 | .vidioc_querybuf = vidioc_querybuf, | |
1011 | .vidioc_qbuf = vidioc_qbuf, | |
1012 | .vidioc_dqbuf = vidioc_dqbuf, | |
1013 | .vidioc_g_std = vidioc_g_std, | |
1014 | .vidioc_s_std = vidioc_s_std, | |
1015 | .vidioc_streamon = vidioc_streamon, | |
1016 | .vidioc_streamoff = vidioc_streamoff, | |
1017 | .vidioc_g_parm = vidioc_g_parm, | |
1018 | }; | |
1019 | ||
1020 | /*********************************************************************************/ | |
1021 | /* buffer handling functions */ | |
1022 | ||
1023 | static int buffer_activate (struct saa7146_dev *dev, | |
1024 | struct saa7146_buf *buf, | |
1025 | struct saa7146_buf *next) | |
1026 | { | |
1027 | struct saa7146_vv *vv = dev->vv_data; | |
1028 | ||
1029 | buf->vb.state = VIDEOBUF_ACTIVE; | |
1030 | saa7146_set_capture(dev,buf,next); | |
1031 | ||
1032 | mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf) | |
1037 | { | |
1038 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); | |
1039 | saa7146_pgtable_free(dev->pci, &buf->pt[1]); | |
1040 | saa7146_pgtable_free(dev->pci, &buf->pt[2]); | |
1041 | } | |
1042 | ||
1043 | static int buffer_prepare(struct videobuf_queue *q, | |
1044 | struct videobuf_buffer *vb, enum v4l2_field field) | |
1045 | { | |
1046 | struct file *file = q->priv_data; | |
1047 | struct saa7146_fh *fh = file->private_data; | |
1048 | struct saa7146_dev *dev = fh->dev; | |
1049 | struct saa7146_vv *vv = dev->vv_data; | |
1050 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1051 | int size,err = 0; | |
1052 | ||
1053 | DEB_CAP("vbuf:%p\n", vb); | |
1054 | ||
1055 | /* sanity checks */ | |
1056 | if (fh->video_fmt.width < 48 || | |
1057 | fh->video_fmt.height < 32 || | |
1058 | fh->video_fmt.width > vv->standard->h_max_out || | |
1059 | fh->video_fmt.height > vv->standard->v_max_out) { | |
1060 | DEB_D("w (%d) / h (%d) out of bounds\n", | |
1061 | fh->video_fmt.width, fh->video_fmt.height); | |
1062 | return -EINVAL; | |
1063 | } | |
1064 | ||
1065 | size = fh->video_fmt.sizeimage; | |
1066 | if (0 != buf->vb.baddr && buf->vb.bsize < size) { | |
1067 | DEB_D("size mismatch\n"); | |
1068 | return -EINVAL; | |
1069 | } | |
1070 | ||
1071 | DEB_CAP("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", | |
1072 | fh->video_fmt.width, fh->video_fmt.height, | |
1073 | size, v4l2_field_names[fh->video_fmt.field]); | |
1074 | if (buf->vb.width != fh->video_fmt.width || | |
1075 | buf->vb.bytesperline != fh->video_fmt.bytesperline || | |
1076 | buf->vb.height != fh->video_fmt.height || | |
1077 | buf->vb.size != size || | |
1078 | buf->vb.field != field || | |
1079 | buf->vb.field != fh->video_fmt.field || | |
1080 | buf->fmt != &fh->video_fmt) { | |
1081 | saa7146_dma_free(dev,q,buf); | |
1082 | } | |
1083 | ||
1084 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { | |
1085 | struct saa7146_format *sfmt; | |
1086 | ||
1087 | buf->vb.bytesperline = fh->video_fmt.bytesperline; | |
1088 | buf->vb.width = fh->video_fmt.width; | |
1089 | buf->vb.height = fh->video_fmt.height; | |
1090 | buf->vb.size = size; | |
1091 | buf->vb.field = field; | |
1092 | buf->fmt = &fh->video_fmt; | |
1093 | buf->vb.field = fh->video_fmt.field; | |
1094 | ||
1095 | sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); | |
1096 | ||
1097 | release_all_pagetables(dev, buf); | |
1098 | if( 0 != IS_PLANAR(sfmt->trans)) { | |
1099 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); | |
1100 | saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); | |
1101 | saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); | |
1102 | } else { | |
1103 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); | |
1104 | } | |
1105 | ||
1106 | err = videobuf_iolock(q,&buf->vb, &vv->ov_fb); | |
1107 | if (err) | |
1108 | goto oops; | |
1109 | err = saa7146_pgtable_build(dev,buf); | |
1110 | if (err) | |
1111 | goto oops; | |
1112 | } | |
1113 | buf->vb.state = VIDEOBUF_PREPARED; | |
1114 | buf->activate = buffer_activate; | |
1115 | ||
1116 | return 0; | |
1117 | ||
1118 | oops: | |
1119 | DEB_D("error out\n"); | |
1120 | saa7146_dma_free(dev,q,buf); | |
1121 | ||
1122 | return err; | |
1123 | } | |
1124 | ||
1125 | static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) | |
1126 | { | |
1127 | struct file *file = q->priv_data; | |
1128 | struct saa7146_fh *fh = file->private_data; | |
1129 | ||
1130 | if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) | |
1131 | *count = MAX_SAA7146_CAPTURE_BUFFERS; | |
1132 | ||
1133 | *size = fh->video_fmt.sizeimage; | |
1134 | ||
1135 | /* check if we exceed the "max_memory" parameter */ | |
1136 | if( (*count * *size) > (max_memory*1048576) ) { | |
1137 | *count = (max_memory*1048576) / *size; | |
1138 | } | |
1139 | ||
1140 | DEB_CAP("%d buffers, %d bytes each\n", *count, *size); | |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
1146 | { | |
1147 | struct file *file = q->priv_data; | |
1148 | struct saa7146_fh *fh = file->private_data; | |
1149 | struct saa7146_dev *dev = fh->dev; | |
1150 | struct saa7146_vv *vv = dev->vv_data; | |
1151 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1152 | ||
1153 | DEB_CAP("vbuf:%p\n", vb); | |
1154 | saa7146_buffer_queue(fh->dev,&vv->video_q,buf); | |
1155 | } | |
1156 | ||
1157 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
1158 | { | |
1159 | struct file *file = q->priv_data; | |
1160 | struct saa7146_fh *fh = file->private_data; | |
1161 | struct saa7146_dev *dev = fh->dev; | |
1162 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1163 | ||
1164 | DEB_CAP("vbuf:%p\n", vb); | |
1165 | ||
1166 | saa7146_dma_free(dev,q,buf); | |
1167 | ||
1168 | release_all_pagetables(dev, buf); | |
1169 | } | |
1170 | ||
1171 | static struct videobuf_queue_ops video_qops = { | |
1172 | .buf_setup = buffer_setup, | |
1173 | .buf_prepare = buffer_prepare, | |
1174 | .buf_queue = buffer_queue, | |
1175 | .buf_release = buffer_release, | |
1176 | }; | |
1177 | ||
1178 | /********************************************************************************/ | |
1179 | /* file operations */ | |
1180 | ||
1181 | static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) | |
1182 | { | |
1183 | INIT_LIST_HEAD(&vv->video_q.queue); | |
1184 | ||
1185 | init_timer(&vv->video_q.timeout); | |
1186 | vv->video_q.timeout.function = saa7146_buffer_timeout; | |
1187 | vv->video_q.timeout.data = (unsigned long)(&vv->video_q); | |
1188 | vv->video_q.dev = dev; | |
1189 | ||
1190 | /* set some default values */ | |
1191 | vv->standard = &dev->ext_vv_data->stds[0]; | |
1192 | ||
1193 | /* FIXME: what's this? */ | |
1194 | vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; | |
1195 | vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; | |
1196 | } | |
1197 | ||
1198 | ||
1199 | static int video_open(struct saa7146_dev *dev, struct file *file) | |
1200 | { | |
1201 | struct saa7146_fh *fh = file->private_data; | |
1202 | struct saa7146_format *sfmt; | |
1203 | ||
1204 | fh->video_fmt.width = 384; | |
1205 | fh->video_fmt.height = 288; | |
1206 | fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; | |
1207 | fh->video_fmt.bytesperline = 0; | |
1208 | fh->video_fmt.field = V4L2_FIELD_ANY; | |
1209 | fh->video_fmt.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
1210 | sfmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
1211 | fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; | |
1212 | ||
1213 | videobuf_queue_sg_init(&fh->video_q, &video_qops, | |
1214 | &dev->pci->dev, &dev->slock, | |
1215 | V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1216 | V4L2_FIELD_INTERLACED, | |
1217 | sizeof(struct saa7146_buf), | |
1218 | file, &dev->v4l2_lock); | |
1219 | ||
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | ||
1224 | static void video_close(struct saa7146_dev *dev, struct file *file) | |
1225 | { | |
1226 | struct saa7146_fh *fh = file->private_data; | |
1227 | struct saa7146_vv *vv = dev->vv_data; | |
1228 | struct videobuf_queue *q = &fh->video_q; | |
1229 | ||
1230 | if (IS_CAPTURE_ACTIVE(fh) != 0) | |
1231 | video_end(fh, file); | |
1232 | else if (IS_OVERLAY_ACTIVE(fh) != 0) | |
1233 | saa7146_stop_preview(fh); | |
1234 | ||
1235 | videobuf_stop(q); | |
1236 | /* hmm, why is this function declared void? */ | |
1237 | } | |
1238 | ||
1239 | ||
1240 | static void video_irq_done(struct saa7146_dev *dev, unsigned long st) | |
1241 | { | |
1242 | struct saa7146_vv *vv = dev->vv_data; | |
1243 | struct saa7146_dmaqueue *q = &vv->video_q; | |
1244 | ||
1245 | spin_lock(&dev->slock); | |
1246 | DEB_CAP("called\n"); | |
1247 | ||
1248 | /* only finish the buffer if we have one... */ | |
1249 | if( NULL != q->curr ) { | |
1250 | saa7146_buffer_finish(dev,q,VIDEOBUF_DONE); | |
1251 | } | |
1252 | saa7146_buffer_next(dev,q,0); | |
1253 | ||
1254 | spin_unlock(&dev->slock); | |
1255 | } | |
1256 | ||
1257 | static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1258 | { | |
1259 | struct saa7146_fh *fh = file->private_data; | |
1260 | struct saa7146_dev *dev = fh->dev; | |
1261 | struct saa7146_vv *vv = dev->vv_data; | |
1262 | ssize_t ret = 0; | |
1263 | ||
1264 | DEB_EE("called\n"); | |
1265 | ||
1266 | if ((vv->video_status & STATUS_CAPTURE) != 0) { | |
1267 | /* fixme: should we allow read() captures while streaming capture? */ | |
1268 | if (vv->video_fh == fh) { | |
1269 | DEB_S("already capturing\n"); | |
1270 | return -EBUSY; | |
1271 | } | |
1272 | DEB_S("already capturing in another open\n"); | |
1273 | return -EBUSY; | |
1274 | } | |
1275 | ||
1276 | ret = video_begin(fh); | |
1277 | if( 0 != ret) { | |
1278 | goto out; | |
1279 | } | |
1280 | ||
1281 | ret = videobuf_read_one(&fh->video_q , data, count, ppos, | |
1282 | file->f_flags & O_NONBLOCK); | |
1283 | if (ret != 0) { | |
1284 | video_end(fh, file); | |
1285 | } else { | |
1286 | ret = video_end(fh, file); | |
1287 | } | |
1288 | out: | |
1289 | /* restart overlay if it was active before */ | |
1290 | if (vv->ov_suspend != NULL) { | |
1291 | saa7146_start_preview(vv->ov_suspend); | |
1292 | vv->ov_suspend = NULL; | |
1293 | } | |
1294 | ||
1295 | return ret; | |
1296 | } | |
1297 | ||
1298 | struct saa7146_use_ops saa7146_video_uops = { | |
1299 | .init = video_init, | |
1300 | .open = video_open, | |
1301 | .release = video_close, | |
1302 | .irq_done = video_irq_done, | |
1303 | .read = video_read, | |
1304 | }; |