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1da177e4 LT |
1 | #include <media/saa7146_vv.h> |
2 | ||
3 | static int max_memory = 32; | |
4 | ||
5 | module_param(max_memory, int, 0644); | |
6 | MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)"); | |
7 | ||
8 | #define IS_CAPTURE_ACTIVE(fh) \ | |
9 | (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh)) | |
10 | ||
11 | #define IS_OVERLAY_ACTIVE(fh) \ | |
12 | (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh)) | |
13 | ||
14 | /* format descriptions for capture and preview */ | |
15 | static struct saa7146_format formats[] = { | |
16 | { | |
17 | .name = "RGB-8 (3-3-2)", | |
18 | .pixelformat = V4L2_PIX_FMT_RGB332, | |
19 | .trans = RGB08_COMPOSED, | |
20 | .depth = 8, | |
21 | .flags = 0, | |
22 | }, { | |
23 | .name = "RGB-16 (5/B-6/G-5/R)", | |
24 | .pixelformat = V4L2_PIX_FMT_RGB565, | |
25 | .trans = RGB16_COMPOSED, | |
26 | .depth = 16, | |
27 | .flags = 0, | |
28 | }, { | |
29 | .name = "RGB-24 (B-G-R)", | |
30 | .pixelformat = V4L2_PIX_FMT_BGR24, | |
31 | .trans = RGB24_COMPOSED, | |
32 | .depth = 24, | |
33 | .flags = 0, | |
34 | }, { | |
35 | .name = "RGB-32 (B-G-R)", | |
36 | .pixelformat = V4L2_PIX_FMT_BGR32, | |
37 | .trans = RGB32_COMPOSED, | |
38 | .depth = 32, | |
39 | .flags = 0, | |
40 | }, { | |
41 | .name = "RGB-32 (R-G-B)", | |
42 | .pixelformat = V4L2_PIX_FMT_RGB32, | |
43 | .trans = RGB32_COMPOSED, | |
44 | .depth = 32, | |
45 | .flags = 0, | |
46 | .swap = 0x2, | |
47 | }, { | |
48 | .name = "Greyscale-8", | |
49 | .pixelformat = V4L2_PIX_FMT_GREY, | |
50 | .trans = Y8, | |
51 | .depth = 8, | |
52 | .flags = 0, | |
53 | }, { | |
54 | .name = "YUV 4:2:2 planar (Y-Cb-Cr)", | |
55 | .pixelformat = V4L2_PIX_FMT_YUV422P, | |
56 | .trans = YUV422_DECOMPOSED, | |
57 | .depth = 16, | |
58 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, | |
59 | }, { | |
60 | .name = "YVU 4:2:0 planar (Y-Cb-Cr)", | |
61 | .pixelformat = V4L2_PIX_FMT_YVU420, | |
62 | .trans = YUV420_DECOMPOSED, | |
63 | .depth = 12, | |
64 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, | |
65 | }, { | |
66 | .name = "YUV 4:2:0 planar (Y-Cb-Cr)", | |
67 | .pixelformat = V4L2_PIX_FMT_YUV420, | |
68 | .trans = YUV420_DECOMPOSED, | |
69 | .depth = 12, | |
70 | .flags = FORMAT_IS_PLANAR, | |
71 | }, { | |
72 | .name = "YUV 4:2:2 (U-Y-V-Y)", | |
73 | .pixelformat = V4L2_PIX_FMT_UYVY, | |
74 | .trans = YUV422_COMPOSED, | |
75 | .depth = 16, | |
76 | .flags = 0, | |
77 | } | |
78 | }; | |
79 | ||
80 | /* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps. | |
81 | due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped | |
82 | (like V4L2_PIX_FMT_YUYV) ... 8-( */ | |
83 | ||
84 | static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); | |
85 | ||
86 | struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc) | |
87 | { | |
88 | int i, j = NUM_FORMATS; | |
89 | ||
90 | for (i = 0; i < j; i++) { | |
91 | if (formats[i].pixelformat == fourcc) { | |
92 | return formats+i; | |
93 | } | |
94 | } | |
95 | ||
96 | DEB_D(("unknown pixelformat:'%4.4s'\n",(char *)&fourcc)); | |
97 | return NULL; | |
98 | } | |
99 | ||
100 | static int g_fmt(struct saa7146_fh *fh, struct v4l2_format *f) | |
101 | { | |
102 | struct saa7146_dev *dev = fh->dev; | |
103 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); | |
104 | ||
105 | switch (f->type) { | |
106 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
107 | f->fmt.pix = fh->video_fmt; | |
108 | return 0; | |
109 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
110 | f->fmt.win = fh->ov.win; | |
111 | return 0; | |
112 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
113 | { | |
114 | f->fmt.vbi = fh->vbi_fmt; | |
115 | return 0; | |
116 | } | |
117 | default: | |
118 | DEB_D(("invalid format type '%d'.\n",f->type)); | |
119 | return -EINVAL; | |
120 | } | |
121 | } | |
122 | ||
123 | static int try_win(struct saa7146_dev *dev, struct v4l2_window *win) | |
124 | { | |
125 | struct saa7146_vv *vv = dev->vv_data; | |
126 | enum v4l2_field field; | |
127 | int maxw, maxh; | |
128 | ||
129 | DEB_EE(("dev:%p\n",dev)); | |
130 | ||
131 | if (NULL == vv->ov_fb.base) { | |
132 | DEB_D(("no fb base set.\n")); | |
133 | return -EINVAL; | |
134 | } | |
135 | if (NULL == vv->ov_fmt) { | |
136 | DEB_D(("no fb fmt set.\n")); | |
137 | return -EINVAL; | |
138 | } | |
139 | if (win->w.width < 48 || win->w.height < 32) { | |
140 | DEB_D(("min width/height. (%d,%d)\n",win->w.width,win->w.height)); | |
141 | return -EINVAL; | |
142 | } | |
143 | if (win->clipcount > 16) { | |
144 | DEB_D(("clipcount too big.\n")); | |
145 | return -EINVAL; | |
146 | } | |
147 | ||
148 | field = win->field; | |
149 | maxw = vv->standard->h_max_out; | |
150 | maxh = vv->standard->v_max_out; | |
151 | ||
152 | if (V4L2_FIELD_ANY == field) { | |
afd1a0c9 | 153 | field = (win->w.height > maxh/2) |
50c25fff MK |
154 | ? V4L2_FIELD_INTERLACED |
155 | : V4L2_FIELD_TOP; | |
afd1a0c9 MCC |
156 | } |
157 | switch (field) { | |
158 | case V4L2_FIELD_TOP: | |
159 | case V4L2_FIELD_BOTTOM: | |
160 | case V4L2_FIELD_ALTERNATE: | |
161 | maxh = maxh / 2; | |
162 | break; | |
163 | case V4L2_FIELD_INTERLACED: | |
164 | break; | |
165 | default: { | |
1da177e4 | 166 | DEB_D(("no known field mode '%d'.\n",field)); |
afd1a0c9 MCC |
167 | return -EINVAL; |
168 | } | |
1da177e4 | 169 | } |
1da177e4 LT |
170 | |
171 | win->field = field; | |
172 | if (win->w.width > maxw) | |
173 | win->w.width = maxw; | |
174 | if (win->w.height > maxh) | |
175 | win->w.height = maxh; | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | static int try_fmt(struct saa7146_fh *fh, struct v4l2_format *f) | |
181 | { | |
182 | struct saa7146_dev *dev = fh->dev; | |
183 | struct saa7146_vv *vv = dev->vv_data; | |
184 | int err; | |
185 | ||
186 | switch (f->type) { | |
187 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
188 | { | |
189 | struct saa7146_format *fmt; | |
190 | enum v4l2_field field; | |
191 | int maxw, maxh; | |
192 | int calc_bpl; | |
193 | ||
194 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh)); | |
195 | ||
196 | fmt = format_by_fourcc(dev,f->fmt.pix.pixelformat); | |
197 | if (NULL == fmt) { | |
198 | return -EINVAL; | |
199 | } | |
200 | ||
201 | field = f->fmt.pix.field; | |
202 | maxw = vv->standard->h_max_out; | |
203 | maxh = vv->standard->v_max_out; | |
204 | ||
205 | if (V4L2_FIELD_ANY == field) { | |
206 | field = (f->fmt.pix.height > maxh/2) | |
207 | ? V4L2_FIELD_INTERLACED | |
208 | : V4L2_FIELD_BOTTOM; | |
209 | } | |
210 | switch (field) { | |
211 | case V4L2_FIELD_ALTERNATE: { | |
212 | vv->last_field = V4L2_FIELD_TOP; | |
213 | maxh = maxh / 2; | |
214 | break; | |
215 | } | |
216 | case V4L2_FIELD_TOP: | |
217 | case V4L2_FIELD_BOTTOM: | |
218 | vv->last_field = V4L2_FIELD_INTERLACED; | |
219 | maxh = maxh / 2; | |
220 | break; | |
221 | case V4L2_FIELD_INTERLACED: | |
222 | vv->last_field = V4L2_FIELD_INTERLACED; | |
223 | break; | |
224 | default: { | |
225 | DEB_D(("no known field mode '%d'.\n",field)); | |
226 | return -EINVAL; | |
227 | } | |
228 | } | |
229 | ||
230 | f->fmt.pix.field = field; | |
231 | if (f->fmt.pix.width > maxw) | |
232 | f->fmt.pix.width = maxw; | |
233 | if (f->fmt.pix.height > maxh) | |
234 | f->fmt.pix.height = maxh; | |
235 | ||
236 | calc_bpl = (f->fmt.pix.width * fmt->depth)/8; | |
237 | ||
238 | if (f->fmt.pix.bytesperline < calc_bpl) | |
239 | f->fmt.pix.bytesperline = calc_bpl; | |
240 | ||
241 | if (f->fmt.pix.bytesperline > (2*PAGE_SIZE * fmt->depth)/8) /* arbitrary constraint */ | |
242 | f->fmt.pix.bytesperline = calc_bpl; | |
243 | ||
244 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; | |
245 | DEB_D(("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n",f->fmt.pix.width,f->fmt.pix.height,f->fmt.pix.bytesperline,f->fmt.pix.sizeimage)); | |
246 | ||
247 | return 0; | |
248 | } | |
249 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
250 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh)); | |
251 | err = try_win(dev,&f->fmt.win); | |
252 | if (0 != err) { | |
253 | return err; | |
254 | } | |
255 | return 0; | |
256 | default: | |
257 | DEB_EE(("unknown format type '%d'\n",f->type)); | |
258 | return -EINVAL; | |
259 | } | |
260 | } | |
261 | ||
262 | int saa7146_start_preview(struct saa7146_fh *fh) | |
263 | { | |
264 | struct saa7146_dev *dev = fh->dev; | |
265 | struct saa7146_vv *vv = dev->vv_data; | |
266 | int ret = 0, err = 0; | |
267 | ||
268 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); | |
269 | ||
270 | /* check if we have overlay informations */ | |
271 | if( NULL == fh->ov.fh ) { | |
272 | DEB_D(("no overlay data available. try S_FMT first.\n")); | |
273 | return -EAGAIN; | |
274 | } | |
275 | ||
276 | /* check if streaming capture is running */ | |
277 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
278 | DEB_D(("streaming capture is active.\n")); | |
279 | return -EBUSY; | |
280 | } | |
281 | ||
282 | /* check if overlay is running */ | |
283 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
284 | if (vv->video_fh == fh) { | |
285 | DEB_D(("overlay is already active.\n")); | |
286 | return 0; | |
287 | } | |
288 | DEB_D(("overlay is already active in another open.\n")); | |
289 | return -EBUSY; | |
290 | } | |
291 | ||
292 | if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { | |
293 | DEB_D(("cannot get necessary overlay resources\n")); | |
294 | return -EBUSY; | |
295 | } | |
296 | ||
297 | err = try_win(dev,&fh->ov.win); | |
298 | if (0 != err) { | |
299 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); | |
300 | return -EBUSY; | |
301 | } | |
302 | ||
303 | vv->ov_data = &fh->ov; | |
304 | ||
305 | DEB_D(("%dx%d+%d+%d %s field=%s\n", | |
306 | fh->ov.win.w.width,fh->ov.win.w.height, | |
307 | fh->ov.win.w.left,fh->ov.win.w.top, | |
308 | vv->ov_fmt->name,v4l2_field_names[fh->ov.win.field])); | |
309 | ||
310 | if (0 != (ret = saa7146_enable_overlay(fh))) { | |
311 | DEB_D(("enabling overlay failed: %d\n",ret)); | |
312 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); | |
313 | return ret; | |
314 | } | |
315 | ||
316 | vv->video_status = STATUS_OVERLAY; | |
317 | vv->video_fh = fh; | |
318 | ||
319 | return 0; | |
320 | } | |
5d7dc8c4 | 321 | EXPORT_SYMBOL_GPL(saa7146_start_preview); |
1da177e4 LT |
322 | |
323 | int saa7146_stop_preview(struct saa7146_fh *fh) | |
324 | { | |
325 | struct saa7146_dev *dev = fh->dev; | |
326 | struct saa7146_vv *vv = dev->vv_data; | |
327 | ||
328 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); | |
329 | ||
330 | /* check if streaming capture is running */ | |
331 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
332 | DEB_D(("streaming capture is active.\n")); | |
333 | return -EBUSY; | |
334 | } | |
335 | ||
336 | /* check if overlay is running at all */ | |
337 | if ((vv->video_status & STATUS_OVERLAY) == 0) { | |
338 | DEB_D(("no active overlay.\n")); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | if (vv->video_fh != fh) { | |
343 | DEB_D(("overlay is active, but in another open.\n")); | |
344 | return -EBUSY; | |
345 | } | |
346 | ||
347 | vv->video_status = 0; | |
348 | vv->video_fh = NULL; | |
349 | ||
350 | saa7146_disable_overlay(fh); | |
351 | ||
352 | saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); | |
353 | ||
354 | return 0; | |
355 | } | |
5d7dc8c4 | 356 | EXPORT_SYMBOL_GPL(saa7146_stop_preview); |
1da177e4 LT |
357 | |
358 | static int s_fmt(struct saa7146_fh *fh, struct v4l2_format *f) | |
359 | { | |
360 | struct saa7146_dev *dev = fh->dev; | |
361 | struct saa7146_vv *vv = dev->vv_data; | |
362 | ||
363 | int err; | |
364 | ||
365 | switch (f->type) { | |
366 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
367 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh)); | |
368 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
369 | DEB_EE(("streaming capture is active\n")); | |
370 | return -EBUSY; | |
371 | } | |
372 | err = try_fmt(fh,f); | |
373 | if (0 != err) | |
374 | return err; | |
375 | fh->video_fmt = f->fmt.pix; | |
376 | DEB_EE(("set to pixelformat '%4.4s'\n",(char *)&fh->video_fmt.pixelformat)); | |
377 | return 0; | |
378 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
379 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh)); | |
380 | err = try_win(dev,&f->fmt.win); | |
381 | if (0 != err) | |
382 | return err; | |
3593cab5 | 383 | mutex_lock(&dev->lock); |
1da177e4 LT |
384 | fh->ov.win = f->fmt.win; |
385 | fh->ov.nclips = f->fmt.win.clipcount; | |
386 | if (fh->ov.nclips > 16) | |
387 | fh->ov.nclips = 16; | |
388 | if (copy_from_user(fh->ov.clips,f->fmt.win.clips,sizeof(struct v4l2_clip)*fh->ov.nclips)) { | |
3593cab5 | 389 | mutex_unlock(&dev->lock); |
1da177e4 LT |
390 | return -EFAULT; |
391 | } | |
392 | ||
393 | /* fh->ov.fh is used to indicate that we have valid overlay informations, too */ | |
394 | fh->ov.fh = fh; | |
395 | ||
3593cab5 | 396 | mutex_unlock(&dev->lock); |
1da177e4 LT |
397 | |
398 | /* check if our current overlay is active */ | |
399 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
400 | saa7146_stop_preview(fh); | |
401 | saa7146_start_preview(fh); | |
402 | } | |
403 | return 0; | |
404 | default: | |
405 | DEB_D(("unknown format type '%d'\n",f->type)); | |
406 | return -EINVAL; | |
407 | } | |
408 | } | |
409 | ||
410 | /********************************************************************************/ | |
411 | /* device controls */ | |
412 | ||
413 | static struct v4l2_queryctrl controls[] = { | |
414 | { | |
415 | .id = V4L2_CID_BRIGHTNESS, | |
416 | .name = "Brightness", | |
417 | .minimum = 0, | |
418 | .maximum = 255, | |
419 | .step = 1, | |
420 | .default_value = 128, | |
421 | .type = V4L2_CTRL_TYPE_INTEGER, | |
422 | },{ | |
423 | .id = V4L2_CID_CONTRAST, | |
424 | .name = "Contrast", | |
425 | .minimum = 0, | |
426 | .maximum = 127, | |
427 | .step = 1, | |
428 | .default_value = 64, | |
429 | .type = V4L2_CTRL_TYPE_INTEGER, | |
430 | },{ | |
431 | .id = V4L2_CID_SATURATION, | |
432 | .name = "Saturation", | |
433 | .minimum = 0, | |
434 | .maximum = 127, | |
435 | .step = 1, | |
436 | .default_value = 64, | |
437 | .type = V4L2_CTRL_TYPE_INTEGER, | |
438 | },{ | |
439 | .id = V4L2_CID_VFLIP, | |
440 | .name = "Vertical flip", | |
441 | .minimum = 0, | |
442 | .maximum = 1, | |
443 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
444 | },{ | |
445 | .id = V4L2_CID_HFLIP, | |
446 | .name = "Horizontal flip", | |
447 | .minimum = 0, | |
448 | .maximum = 1, | |
449 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
450 | }, | |
451 | }; | |
452 | static int NUM_CONTROLS = sizeof(controls)/sizeof(struct v4l2_queryctrl); | |
453 | ||
454 | #define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 0) | |
455 | ||
456 | static struct v4l2_queryctrl* ctrl_by_id(int id) | |
457 | { | |
458 | int i; | |
459 | ||
460 | for (i = 0; i < NUM_CONTROLS; i++) | |
461 | if (controls[i].id == id) | |
462 | return controls+i; | |
463 | return NULL; | |
464 | } | |
465 | ||
466 | static int get_control(struct saa7146_fh *fh, struct v4l2_control *c) | |
467 | { | |
468 | struct saa7146_dev *dev = fh->dev; | |
469 | struct saa7146_vv *vv = dev->vv_data; | |
470 | ||
471 | const struct v4l2_queryctrl* ctrl; | |
472 | u32 value = 0; | |
473 | ||
474 | ctrl = ctrl_by_id(c->id); | |
475 | if (NULL == ctrl) | |
476 | return -EINVAL; | |
477 | switch (c->id) { | |
478 | case V4L2_CID_BRIGHTNESS: | |
479 | value = saa7146_read(dev, BCS_CTRL); | |
480 | c->value = 0xff & (value >> 24); | |
481 | DEB_D(("V4L2_CID_BRIGHTNESS: %d\n",c->value)); | |
482 | break; | |
483 | case V4L2_CID_CONTRAST: | |
484 | value = saa7146_read(dev, BCS_CTRL); | |
485 | c->value = 0x7f & (value >> 16); | |
486 | DEB_D(("V4L2_CID_CONTRAST: %d\n",c->value)); | |
487 | break; | |
488 | case V4L2_CID_SATURATION: | |
489 | value = saa7146_read(dev, BCS_CTRL); | |
490 | c->value = 0x7f & (value >> 0); | |
491 | DEB_D(("V4L2_CID_SATURATION: %d\n",c->value)); | |
492 | break; | |
493 | case V4L2_CID_VFLIP: | |
494 | c->value = vv->vflip; | |
495 | DEB_D(("V4L2_CID_VFLIP: %d\n",c->value)); | |
496 | break; | |
497 | case V4L2_CID_HFLIP: | |
498 | c->value = vv->hflip; | |
499 | DEB_D(("V4L2_CID_HFLIP: %d\n",c->value)); | |
500 | break; | |
501 | default: | |
502 | return -EINVAL; | |
503 | } | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | static int set_control(struct saa7146_fh *fh, struct v4l2_control *c) | |
509 | { | |
510 | struct saa7146_dev *dev = fh->dev; | |
511 | struct saa7146_vv *vv = dev->vv_data; | |
512 | ||
513 | const struct v4l2_queryctrl* ctrl; | |
514 | ||
515 | ctrl = ctrl_by_id(c->id); | |
516 | if (NULL == ctrl) { | |
517 | DEB_D(("unknown control %d\n",c->id)); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
3593cab5 | 521 | mutex_lock(&dev->lock); |
1da177e4 LT |
522 | |
523 | switch (ctrl->type) { | |
524 | case V4L2_CTRL_TYPE_BOOLEAN: | |
525 | case V4L2_CTRL_TYPE_MENU: | |
526 | case V4L2_CTRL_TYPE_INTEGER: | |
527 | if (c->value < ctrl->minimum) | |
528 | c->value = ctrl->minimum; | |
529 | if (c->value > ctrl->maximum) | |
530 | c->value = ctrl->maximum; | |
531 | break; | |
532 | default: | |
533 | /* nothing */; | |
534 | }; | |
535 | ||
536 | switch (c->id) { | |
537 | case V4L2_CID_BRIGHTNESS: { | |
538 | u32 value = saa7146_read(dev, BCS_CTRL); | |
539 | value &= 0x00ffffff; | |
540 | value |= (c->value << 24); | |
541 | saa7146_write(dev, BCS_CTRL, value); | |
542 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); | |
543 | break; | |
544 | } | |
545 | case V4L2_CID_CONTRAST: { | |
546 | u32 value = saa7146_read(dev, BCS_CTRL); | |
547 | value &= 0xff00ffff; | |
548 | value |= (c->value << 16); | |
549 | saa7146_write(dev, BCS_CTRL, value); | |
550 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); | |
551 | break; | |
552 | } | |
553 | case V4L2_CID_SATURATION: { | |
554 | u32 value = saa7146_read(dev, BCS_CTRL); | |
555 | value &= 0xffffff00; | |
556 | value |= (c->value << 0); | |
557 | saa7146_write(dev, BCS_CTRL, value); | |
558 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); | |
559 | break; | |
560 | } | |
561 | case V4L2_CID_HFLIP: | |
562 | /* fixme: we can support changing VFLIP and HFLIP here... */ | |
563 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
564 | DEB_D(("V4L2_CID_HFLIP while active capture.\n")); | |
3593cab5 | 565 | mutex_unlock(&dev->lock); |
1da177e4 LT |
566 | return -EINVAL; |
567 | } | |
568 | vv->hflip = c->value; | |
569 | break; | |
570 | case V4L2_CID_VFLIP: | |
571 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
572 | DEB_D(("V4L2_CID_VFLIP while active capture.\n")); | |
3593cab5 | 573 | mutex_unlock(&dev->lock); |
1da177e4 LT |
574 | return -EINVAL; |
575 | } | |
576 | vv->vflip = c->value; | |
577 | break; | |
578 | default: { | |
579 | return -EINVAL; | |
580 | } | |
581 | } | |
3593cab5 | 582 | mutex_unlock(&dev->lock); |
1da177e4 LT |
583 | |
584 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
585 | saa7146_stop_preview(fh); | |
586 | saa7146_start_preview(fh); | |
587 | } | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /********************************************************************************/ | |
592 | /* common pagetable functions */ | |
593 | ||
594 | static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) | |
595 | { | |
596 | struct pci_dev *pci = dev->pci; | |
c1accaa2 MCC |
597 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
598 | struct scatterlist *list = dma->sglist; | |
599 | int length = dma->sglen; | |
1da177e4 LT |
600 | struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); |
601 | ||
602 | DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length)); | |
603 | ||
604 | if( 0 != IS_PLANAR(sfmt->trans)) { | |
605 | struct saa7146_pgtable *pt1 = &buf->pt[0]; | |
606 | struct saa7146_pgtable *pt2 = &buf->pt[1]; | |
607 | struct saa7146_pgtable *pt3 = &buf->pt[2]; | |
a36ef6b1 AV |
608 | __le32 *ptr1, *ptr2, *ptr3; |
609 | __le32 fill; | |
1da177e4 LT |
610 | |
611 | int size = buf->fmt->width*buf->fmt->height; | |
612 | int i,p,m1,m2,m3,o1,o2; | |
613 | ||
614 | switch( sfmt->depth ) { | |
615 | case 12: { | |
616 | /* create some offsets inside the page table */ | |
617 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; | |
618 | m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1; | |
619 | m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; | |
620 | o1 = size%PAGE_SIZE; | |
621 | o2 = (size+(size/4))%PAGE_SIZE; | |
622 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); | |
623 | break; | |
624 | } | |
625 | case 16: { | |
626 | /* create some offsets inside the page table */ | |
627 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; | |
628 | m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; | |
629 | m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1; | |
630 | o1 = size%PAGE_SIZE; | |
631 | o2 = (size+(size/2))%PAGE_SIZE; | |
632 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); | |
633 | break; | |
634 | } | |
635 | default: { | |
636 | return -1; | |
637 | } | |
638 | } | |
639 | ||
640 | ptr1 = pt1->cpu; | |
641 | ptr2 = pt2->cpu; | |
642 | ptr3 = pt3->cpu; | |
643 | ||
644 | /* walk all pages, copy all page addresses to ptr1 */ | |
645 | for (i = 0; i < length; i++, list++) { | |
646 | for (p = 0; p * 4096 < list->length; p++, ptr1++) { | |
647 | *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset); | |
648 | } | |
649 | } | |
650 | /* | |
651 | ptr1 = pt1->cpu; | |
652 | for(j=0;j<40;j++) { | |
653 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); | |
654 | } | |
655 | */ | |
656 | ||
657 | /* if we have a user buffer, the first page may not be | |
658 | aligned to a page boundary. */ | |
429e9089 | 659 | pt1->offset = dma->sglist->offset; |
1da177e4 LT |
660 | pt2->offset = pt1->offset+o1; |
661 | pt3->offset = pt1->offset+o2; | |
662 | ||
663 | /* create video-dma2 page table */ | |
664 | ptr1 = pt1->cpu; | |
665 | for(i = m1; i <= m2 ; i++, ptr2++) { | |
666 | *ptr2 = ptr1[i]; | |
667 | } | |
668 | fill = *(ptr2-1); | |
669 | for(;i<1024;i++,ptr2++) { | |
670 | *ptr2 = fill; | |
671 | } | |
672 | /* create video-dma3 page table */ | |
673 | ptr1 = pt1->cpu; | |
674 | for(i = m2; i <= m3; i++,ptr3++) { | |
675 | *ptr3 = ptr1[i]; | |
676 | } | |
677 | fill = *(ptr3-1); | |
678 | for(;i<1024;i++,ptr3++) { | |
679 | *ptr3 = fill; | |
680 | } | |
681 | /* finally: finish up video-dma1 page table */ | |
682 | ptr1 = pt1->cpu+m1; | |
683 | fill = pt1->cpu[m1]; | |
684 | for(i=m1;i<1024;i++,ptr1++) { | |
685 | *ptr1 = fill; | |
686 | } | |
687 | /* | |
688 | ptr1 = pt1->cpu; | |
689 | ptr2 = pt2->cpu; | |
690 | ptr3 = pt3->cpu; | |
691 | for(j=0;j<40;j++) { | |
692 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); | |
693 | } | |
694 | for(j=0;j<40;j++) { | |
695 | printk("ptr2 %d: 0x%08x\n",j,ptr2[j]); | |
696 | } | |
697 | for(j=0;j<40;j++) { | |
698 | printk("ptr3 %d: 0x%08x\n",j,ptr3[j]); | |
699 | } | |
700 | */ | |
701 | } else { | |
702 | struct saa7146_pgtable *pt = &buf->pt[0]; | |
703 | return saa7146_pgtable_build_single(pci, pt, list, length); | |
704 | } | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | ||
710 | /********************************************************************************/ | |
711 | /* file operations */ | |
712 | ||
713 | static int video_begin(struct saa7146_fh *fh) | |
714 | { | |
715 | struct saa7146_dev *dev = fh->dev; | |
716 | struct saa7146_vv *vv = dev->vv_data; | |
717 | struct saa7146_format *fmt = NULL; | |
718 | unsigned int resource; | |
719 | int ret = 0, err = 0; | |
720 | ||
721 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); | |
722 | ||
723 | if ((vv->video_status & STATUS_CAPTURE) != 0) { | |
724 | if (vv->video_fh == fh) { | |
725 | DEB_S(("already capturing.\n")); | |
726 | return 0; | |
727 | } | |
728 | DEB_S(("already capturing in another open.\n")); | |
729 | return -EBUSY; | |
730 | } | |
731 | ||
732 | if ((vv->video_status & STATUS_OVERLAY) != 0) { | |
733 | DEB_S(("warning: suspending overlay video for streaming capture.\n")); | |
734 | vv->ov_suspend = vv->video_fh; | |
735 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ | |
736 | if (0 != err) { | |
737 | DEB_D(("suspending video failed. aborting\n")); | |
738 | return err; | |
739 | } | |
740 | } | |
741 | ||
742 | fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
743 | /* we need to have a valid format set here */ | |
744 | BUG_ON(NULL == fmt); | |
745 | ||
746 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { | |
747 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; | |
748 | } else { | |
749 | resource = RESOURCE_DMA1_HPS; | |
750 | } | |
751 | ||
752 | ret = saa7146_res_get(fh, resource); | |
753 | if (0 == ret) { | |
754 | DEB_S(("cannot get capture resource %d\n",resource)); | |
755 | if (vv->ov_suspend != NULL) { | |
756 | saa7146_start_preview(vv->ov_suspend); | |
757 | vv->ov_suspend = NULL; | |
758 | } | |
759 | return -EBUSY; | |
760 | } | |
761 | ||
762 | /* clear out beginning of streaming bit (rps register 0)*/ | |
763 | saa7146_write(dev, MC2, MASK_27 ); | |
764 | ||
765 | /* enable rps0 irqs */ | |
766 | SAA7146_IER_ENABLE(dev, MASK_27); | |
767 | ||
768 | vv->video_fh = fh; | |
769 | vv->video_status = STATUS_CAPTURE; | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
774 | static int video_end(struct saa7146_fh *fh, struct file *file) | |
775 | { | |
776 | struct saa7146_dev *dev = fh->dev; | |
777 | struct saa7146_vv *vv = dev->vv_data; | |
778 | struct saa7146_format *fmt = NULL; | |
779 | unsigned long flags; | |
780 | unsigned int resource; | |
781 | u32 dmas = 0; | |
782 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); | |
783 | ||
784 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { | |
785 | DEB_S(("not capturing.\n")); | |
786 | return 0; | |
787 | } | |
788 | ||
789 | if (vv->video_fh != fh) { | |
790 | DEB_S(("capturing, but in another open.\n")); | |
791 | return -EBUSY; | |
792 | } | |
793 | ||
794 | fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
795 | /* we need to have a valid format set here */ | |
796 | BUG_ON(NULL == fmt); | |
797 | ||
798 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { | |
799 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; | |
800 | dmas = MASK_22 | MASK_21 | MASK_20; | |
801 | } else { | |
802 | resource = RESOURCE_DMA1_HPS; | |
803 | dmas = MASK_22; | |
804 | } | |
805 | spin_lock_irqsave(&dev->slock,flags); | |
806 | ||
807 | /* disable rps0 */ | |
808 | saa7146_write(dev, MC1, MASK_28); | |
809 | ||
810 | /* disable rps0 irqs */ | |
811 | SAA7146_IER_DISABLE(dev, MASK_27); | |
812 | ||
813 | /* shut down all used video dma transfers */ | |
814 | saa7146_write(dev, MC1, dmas); | |
815 | ||
816 | spin_unlock_irqrestore(&dev->slock, flags); | |
817 | ||
818 | vv->video_fh = NULL; | |
819 | vv->video_status = 0; | |
820 | ||
821 | saa7146_res_free(fh, resource); | |
822 | ||
823 | if (vv->ov_suspend != NULL) { | |
824 | saa7146_start_preview(vv->ov_suspend); | |
825 | vv->ov_suspend = NULL; | |
826 | } | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | /* | |
832 | * This function is _not_ called directly, but from | |
833 | * video_generic_ioctl (and maybe others). userspace | |
834 | * copying is done already, arg is a kernel pointer. | |
835 | */ | |
836 | ||
069b7479 | 837 | long saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
1da177e4 LT |
838 | { |
839 | struct saa7146_fh *fh = file->private_data; | |
840 | struct saa7146_dev *dev = fh->dev; | |
841 | struct saa7146_vv *vv = dev->vv_data; | |
842 | ||
069b7479 HV |
843 | long err = 0; |
844 | int result = 0, ee = 0; | |
1da177e4 LT |
845 | |
846 | struct saa7146_use_ops *ops; | |
847 | struct videobuf_queue *q; | |
848 | ||
849 | /* check if extension handles the command */ | |
850 | for(ee = 0; dev->ext_vv_data->ioctls[ee].flags != 0; ee++) { | |
851 | if( cmd == dev->ext_vv_data->ioctls[ee].cmd ) | |
852 | break; | |
853 | } | |
854 | ||
855 | if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_EXCLUSIVE) ) { | |
856 | DEB_D(("extension handles ioctl exclusive.\n")); | |
857 | result = dev->ext_vv_data->ioctl(fh, cmd, arg); | |
858 | return result; | |
859 | } | |
860 | if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_BEFORE) ) { | |
861 | DEB_D(("extension handles ioctl before.\n")); | |
862 | result = dev->ext_vv_data->ioctl(fh, cmd, arg); | |
863 | if( -EAGAIN != result ) { | |
864 | return result; | |
865 | } | |
866 | } | |
867 | ||
868 | /* fixme: add handle "after" case (is it still needed?) */ | |
869 | ||
870 | switch (fh->type) { | |
871 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: { | |
872 | ops = &saa7146_video_uops; | |
873 | q = &fh->video_q; | |
874 | break; | |
875 | } | |
876 | case V4L2_BUF_TYPE_VBI_CAPTURE: { | |
877 | ops = &saa7146_vbi_uops; | |
878 | q = &fh->vbi_q; | |
879 | break; | |
880 | } | |
881 | default: | |
882 | BUG(); | |
883 | return 0; | |
884 | } | |
885 | ||
886 | switch (cmd) { | |
887 | case VIDIOC_QUERYCAP: | |
888 | { | |
889 | struct v4l2_capability *cap = arg; | |
890 | memset(cap,0,sizeof(*cap)); | |
891 | ||
892 | DEB_EE(("VIDIOC_QUERYCAP\n")); | |
893 | ||
804b4458 OE |
894 | strcpy((char *)cap->driver, "saa7146 v4l2"); |
895 | strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card)); | |
896 | sprintf((char *)cap->bus_info,"PCI:%s", pci_name(dev->pci)); | |
1da177e4 LT |
897 | cap->version = SAA7146_VERSION_CODE; |
898 | cap->capabilities = | |
899 | V4L2_CAP_VIDEO_CAPTURE | | |
900 | V4L2_CAP_VIDEO_OVERLAY | | |
901 | V4L2_CAP_READWRITE | | |
902 | V4L2_CAP_STREAMING; | |
903 | cap->capabilities |= dev->ext_vv_data->capabilities; | |
904 | return 0; | |
905 | } | |
906 | case VIDIOC_G_FBUF: | |
907 | { | |
908 | struct v4l2_framebuffer *fb = arg; | |
909 | ||
910 | DEB_EE(("VIDIOC_G_FBUF\n")); | |
911 | ||
912 | *fb = vv->ov_fb; | |
913 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; | |
914 | return 0; | |
915 | } | |
916 | case VIDIOC_S_FBUF: | |
917 | { | |
918 | struct v4l2_framebuffer *fb = arg; | |
919 | struct saa7146_format *fmt; | |
920 | ||
921 | DEB_EE(("VIDIOC_S_FBUF\n")); | |
922 | ||
923 | if(!capable(CAP_SYS_ADMIN) && | |
924 | !capable(CAP_SYS_RAWIO)) | |
925 | return -EPERM; | |
926 | ||
927 | /* check args */ | |
928 | fmt = format_by_fourcc(dev,fb->fmt.pixelformat); | |
929 | if (NULL == fmt) { | |
930 | return -EINVAL; | |
931 | } | |
932 | ||
933 | /* planar formats are not allowed for overlay video, clipping and video dma would clash */ | |
934 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { | |
935 | DEB_S(("planar pixelformat '%4.4s' not allowed for overlay\n",(char *)&fmt->pixelformat)); | |
936 | } | |
937 | ||
938 | /* check if overlay is running */ | |
939 | if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
940 | if (vv->video_fh != fh) { | |
941 | DEB_D(("refusing to change framebuffer informations while overlay is active in another open.\n")); | |
942 | return -EBUSY; | |
943 | } | |
944 | } | |
945 | ||
3593cab5 | 946 | mutex_lock(&dev->lock); |
1da177e4 LT |
947 | |
948 | /* ok, accept it */ | |
949 | vv->ov_fb = *fb; | |
950 | vv->ov_fmt = fmt; | |
951 | if (0 == vv->ov_fb.fmt.bytesperline) | |
952 | vv->ov_fb.fmt.bytesperline = | |
953 | vv->ov_fb.fmt.width*fmt->depth/8; | |
954 | ||
3593cab5 | 955 | mutex_unlock(&dev->lock); |
1da177e4 LT |
956 | |
957 | return 0; | |
958 | } | |
959 | case VIDIOC_ENUM_FMT: | |
960 | { | |
961 | struct v4l2_fmtdesc *f = arg; | |
1da177e4 LT |
962 | |
963 | switch (f->type) { | |
964 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
f796804f HV |
965 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
966 | if (f->index >= NUM_FORMATS) | |
1da177e4 | 967 | return -EINVAL; |
f796804f HV |
968 | strlcpy((char *)f->description, formats[f->index].name, |
969 | sizeof(f->description)); | |
970 | f->pixelformat = formats[f->index].pixelformat; | |
971 | f->flags = 0; | |
972 | memset(f->reserved, 0, sizeof(f->reserved)); | |
1da177e4 | 973 | break; |
1da177e4 LT |
974 | default: |
975 | return -EINVAL; | |
976 | } | |
977 | ||
978 | DEB_EE(("VIDIOC_ENUM_FMT: type:%d, index:%d\n",f->type,f->index)); | |
979 | return 0; | |
980 | } | |
981 | case VIDIOC_QUERYCTRL: | |
982 | { | |
983 | const struct v4l2_queryctrl *ctrl; | |
984 | struct v4l2_queryctrl *c = arg; | |
985 | ||
986 | if ((c->id < V4L2_CID_BASE || | |
987 | c->id >= V4L2_CID_LASTP1) && | |
988 | (c->id < V4L2_CID_PRIVATE_BASE || | |
989 | c->id >= V4L2_CID_PRIVATE_LASTP1)) | |
990 | return -EINVAL; | |
991 | ||
992 | ctrl = ctrl_by_id(c->id); | |
993 | if( NULL == ctrl ) { | |
994 | return -EINVAL; | |
995 | /* | |
996 | c->flags = V4L2_CTRL_FLAG_DISABLED; | |
997 | return 0; | |
998 | */ | |
999 | } | |
1000 | ||
1001 | DEB_EE(("VIDIOC_QUERYCTRL: id:%d\n",c->id)); | |
1002 | *c = *ctrl; | |
1003 | return 0; | |
1004 | } | |
1005 | case VIDIOC_G_CTRL: { | |
1006 | DEB_EE(("VIDIOC_G_CTRL\n")); | |
1007 | return get_control(fh,arg); | |
1008 | } | |
1009 | case VIDIOC_S_CTRL: | |
1010 | { | |
1011 | DEB_EE(("VIDIOC_S_CTRL\n")); | |
1012 | err = set_control(fh,arg); | |
1013 | return err; | |
1014 | } | |
afd1a0c9 MCC |
1015 | case VIDIOC_G_PARM: |
1016 | { | |
1017 | struct v4l2_streamparm *parm = arg; | |
1da177e4 LT |
1018 | if( parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ) { |
1019 | return -EINVAL; | |
1020 | } | |
afd1a0c9 | 1021 | memset(&parm->parm.capture,0,sizeof(struct v4l2_captureparm)); |
1da177e4 LT |
1022 | parm->parm.capture.readbuffers = 1; |
1023 | // fixme: only for PAL! | |
1024 | parm->parm.capture.timeperframe.numerator = 1; | |
1025 | parm->parm.capture.timeperframe.denominator = 25; | |
afd1a0c9 MCC |
1026 | return 0; |
1027 | } | |
1da177e4 LT |
1028 | case VIDIOC_G_FMT: |
1029 | { | |
1030 | struct v4l2_format *f = arg; | |
1031 | DEB_EE(("VIDIOC_G_FMT\n")); | |
1032 | return g_fmt(fh,f); | |
1033 | } | |
1034 | case VIDIOC_S_FMT: | |
1035 | { | |
1036 | struct v4l2_format *f = arg; | |
1037 | DEB_EE(("VIDIOC_S_FMT\n")); | |
1038 | return s_fmt(fh,f); | |
1039 | } | |
1040 | case VIDIOC_TRY_FMT: | |
1041 | { | |
1042 | struct v4l2_format *f = arg; | |
1043 | DEB_EE(("VIDIOC_TRY_FMT\n")); | |
1044 | return try_fmt(fh,f); | |
1045 | } | |
1046 | case VIDIOC_G_STD: | |
1047 | { | |
1048 | v4l2_std_id *id = arg; | |
1049 | DEB_EE(("VIDIOC_G_STD\n")); | |
1050 | *id = vv->standard->id; | |
1051 | return 0; | |
1052 | } | |
1053 | /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) | |
1054 | PAL / NTSC / SECAM. if your hardware does not (or does more) | |
1055 | -- override this function in your extension */ | |
1056 | case VIDIOC_ENUMSTD: | |
1057 | { | |
1058 | struct v4l2_standard *e = arg; | |
1059 | if (e->index < 0 ) | |
1060 | return -EINVAL; | |
1061 | if( e->index < dev->ext_vv_data->num_stds ) { | |
1062 | DEB_EE(("VIDIOC_ENUMSTD: index:%d\n",e->index)); | |
1063 | v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); | |
1064 | return 0; | |
1065 | } | |
1066 | return -EINVAL; | |
1067 | } | |
1068 | case VIDIOC_S_STD: | |
1069 | { | |
1070 | v4l2_std_id *id = arg; | |
1071 | int found = 0; | |
c6eb8eaf | 1072 | int i; |
1da177e4 LT |
1073 | |
1074 | DEB_EE(("VIDIOC_S_STD\n")); | |
1075 | ||
1076 | if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { | |
1077 | DEB_D(("cannot change video standard while streaming capture is active\n")); | |
1078 | return -EBUSY; | |
1079 | } | |
1080 | ||
1081 | if ((vv->video_status & STATUS_OVERLAY) != 0) { | |
1082 | vv->ov_suspend = vv->video_fh; | |
1083 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ | |
1084 | if (0 != err) { | |
1085 | DEB_D(("suspending video failed. aborting\n")); | |
1086 | return err; | |
1087 | } | |
1088 | } | |
1089 | ||
3593cab5 | 1090 | mutex_lock(&dev->lock); |
1da177e4 LT |
1091 | |
1092 | for(i = 0; i < dev->ext_vv_data->num_stds; i++) | |
1093 | if (*id & dev->ext_vv_data->stds[i].id) | |
1094 | break; | |
1095 | if (i != dev->ext_vv_data->num_stds) { | |
1096 | vv->standard = &dev->ext_vv_data->stds[i]; | |
1097 | if( NULL != dev->ext_vv_data->std_callback ) | |
1098 | dev->ext_vv_data->std_callback(dev, vv->standard); | |
1099 | found = 1; | |
1100 | } | |
1101 | ||
3593cab5 | 1102 | mutex_unlock(&dev->lock); |
1da177e4 LT |
1103 | |
1104 | if (vv->ov_suspend != NULL) { | |
1105 | saa7146_start_preview(vv->ov_suspend); | |
1106 | vv->ov_suspend = NULL; | |
1107 | } | |
1108 | ||
1109 | if( 0 == found ) { | |
1110 | DEB_EE(("VIDIOC_S_STD: standard not found.\n")); | |
1111 | return -EINVAL; | |
1112 | } | |
1113 | ||
1114 | DEB_EE(("VIDIOC_S_STD: set to standard to '%s'\n",vv->standard->name)); | |
1115 | return 0; | |
1116 | } | |
1117 | case VIDIOC_OVERLAY: | |
1da177e4 LT |
1118 | { |
1119 | int on = *(int *)arg; | |
1da177e4 LT |
1120 | |
1121 | DEB_D(("VIDIOC_OVERLAY on:%d\n",on)); | |
1122 | if (on != 0) { | |
1123 | err = saa7146_start_preview(fh); | |
1124 | } else { | |
1125 | err = saa7146_stop_preview(fh); | |
1126 | } | |
1127 | return err; | |
1128 | } | |
1129 | case VIDIOC_REQBUFS: { | |
1130 | struct v4l2_requestbuffers *req = arg; | |
1131 | DEB_D(("VIDIOC_REQBUFS, type:%d\n",req->type)); | |
1132 | return videobuf_reqbufs(q,req); | |
1133 | } | |
1134 | case VIDIOC_QUERYBUF: { | |
1135 | struct v4l2_buffer *buf = arg; | |
1136 | DEB_D(("VIDIOC_QUERYBUF, type:%d, offset:%d\n",buf->type,buf->m.offset)); | |
1137 | return videobuf_querybuf(q,buf); | |
1138 | } | |
1139 | case VIDIOC_QBUF: { | |
1140 | struct v4l2_buffer *buf = arg; | |
1141 | int ret = 0; | |
1142 | ret = videobuf_qbuf(q,buf); | |
1143 | DEB_D(("VIDIOC_QBUF: ret:%d, index:%d\n",ret,buf->index)); | |
1144 | return ret; | |
1145 | } | |
1146 | case VIDIOC_DQBUF: { | |
1147 | struct v4l2_buffer *buf = arg; | |
1148 | int ret = 0; | |
1149 | ret = videobuf_dqbuf(q,buf,file->f_flags & O_NONBLOCK); | |
1150 | DEB_D(("VIDIOC_DQBUF: ret:%d, index:%d\n",ret,buf->index)); | |
1151 | return ret; | |
1152 | } | |
1153 | case VIDIOC_STREAMON: { | |
1154 | int *type = arg; | |
1155 | DEB_D(("VIDIOC_STREAMON, type:%d\n",*type)); | |
1156 | ||
1157 | err = video_begin(fh); | |
1158 | if( 0 != err) { | |
1159 | return err; | |
1160 | } | |
1161 | err = videobuf_streamon(q); | |
1162 | return err; | |
1163 | } | |
1164 | case VIDIOC_STREAMOFF: { | |
1165 | int *type = arg; | |
1166 | ||
1167 | DEB_D(("VIDIOC_STREAMOFF, type:%d\n",*type)); | |
1168 | ||
1169 | /* ugly: we need to copy some checks from video_end(), | |
1170 | because videobuf_streamoff() relies on the capture running. | |
1171 | check and fix this */ | |
1172 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { | |
1173 | DEB_S(("not capturing.\n")); | |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | if (vv->video_fh != fh) { | |
1178 | DEB_S(("capturing, but in another open.\n")); | |
1179 | return -EBUSY; | |
1180 | } | |
1181 | ||
1182 | err = videobuf_streamoff(q); | |
1183 | if (0 != err) { | |
1184 | DEB_D(("warning: videobuf_streamoff() failed.\n")); | |
1185 | video_end(fh, file); | |
1186 | } else { | |
1187 | err = video_end(fh, file); | |
1188 | } | |
1189 | return err; | |
1190 | } | |
c3ab204c | 1191 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
1da177e4 LT |
1192 | case VIDIOCGMBUF: |
1193 | { | |
1194 | struct video_mbuf *mbuf = arg; | |
1da177e4 LT |
1195 | int i; |
1196 | ||
1197 | /* fixme: number of capture buffers and sizes for v4l apps */ | |
1198 | int gbuffers = 2; | |
1199 | int gbufsize = 768*576*4; | |
1200 | ||
1201 | DEB_D(("VIDIOCGMBUF \n")); | |
1202 | ||
1203 | q = &fh->video_q; | |
1da177e4 LT |
1204 | err = videobuf_mmap_setup(q,gbuffers,gbufsize, |
1205 | V4L2_MEMORY_MMAP); | |
820eacd8 | 1206 | if (err < 0) |
1da177e4 | 1207 | return err; |
49ee718e BP |
1208 | |
1209 | gbuffers = err; | |
1da177e4 LT |
1210 | memset(mbuf,0,sizeof(*mbuf)); |
1211 | mbuf->frames = gbuffers; | |
1212 | mbuf->size = gbuffers * gbufsize; | |
1213 | for (i = 0; i < gbuffers; i++) | |
1214 | mbuf->offsets[i] = i * gbufsize; | |
1da177e4 LT |
1215 | return 0; |
1216 | } | |
c3ab204c | 1217 | #endif |
1da177e4 | 1218 | default: |
b1f88407 | 1219 | return v4l_compat_translate_ioctl(file, cmd, arg, |
f473bf76 | 1220 | saa7146_video_do_ioctl); |
1da177e4 LT |
1221 | } |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | /*********************************************************************************/ | |
1226 | /* buffer handling functions */ | |
1227 | ||
1228 | static int buffer_activate (struct saa7146_dev *dev, | |
1229 | struct saa7146_buf *buf, | |
1230 | struct saa7146_buf *next) | |
1231 | { | |
1232 | struct saa7146_vv *vv = dev->vv_data; | |
1233 | ||
0fc0686e | 1234 | buf->vb.state = VIDEOBUF_ACTIVE; |
1da177e4 LT |
1235 | saa7146_set_capture(dev,buf,next); |
1236 | ||
1237 | mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT); | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static int buffer_prepare(struct videobuf_queue *q, | |
1242 | struct videobuf_buffer *vb, enum v4l2_field field) | |
1243 | { | |
1244 | struct file *file = q->priv_data; | |
1245 | struct saa7146_fh *fh = file->private_data; | |
1246 | struct saa7146_dev *dev = fh->dev; | |
1247 | struct saa7146_vv *vv = dev->vv_data; | |
1248 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1249 | int size,err = 0; | |
1250 | ||
1251 | DEB_CAP(("vbuf:%p\n",vb)); | |
1252 | ||
1253 | /* sanity checks */ | |
1254 | if (fh->video_fmt.width < 48 || | |
1255 | fh->video_fmt.height < 32 || | |
1256 | fh->video_fmt.width > vv->standard->h_max_out || | |
1257 | fh->video_fmt.height > vv->standard->v_max_out) { | |
1258 | DEB_D(("w (%d) / h (%d) out of bounds.\n",fh->video_fmt.width,fh->video_fmt.height)); | |
1259 | return -EINVAL; | |
1260 | } | |
1261 | ||
1262 | size = fh->video_fmt.sizeimage; | |
1263 | if (0 != buf->vb.baddr && buf->vb.bsize < size) { | |
1264 | DEB_D(("size mismatch.\n")); | |
1265 | return -EINVAL; | |
1266 | } | |
1267 | ||
1268 | DEB_CAP(("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", | |
1269 | fh->video_fmt.width,fh->video_fmt.height,size,v4l2_field_names[fh->video_fmt.field])); | |
1270 | if (buf->vb.width != fh->video_fmt.width || | |
1271 | buf->vb.bytesperline != fh->video_fmt.bytesperline || | |
1272 | buf->vb.height != fh->video_fmt.height || | |
1273 | buf->vb.size != size || | |
1274 | buf->vb.field != field || | |
1275 | buf->vb.field != fh->video_fmt.field || | |
1276 | buf->fmt != &fh->video_fmt) { | |
c7b0ac05 | 1277 | saa7146_dma_free(dev,q,buf); |
1da177e4 LT |
1278 | } |
1279 | ||
0fc0686e | 1280 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
1da177e4 LT |
1281 | struct saa7146_format *sfmt; |
1282 | ||
1283 | buf->vb.bytesperline = fh->video_fmt.bytesperline; | |
1284 | buf->vb.width = fh->video_fmt.width; | |
1285 | buf->vb.height = fh->video_fmt.height; | |
1286 | buf->vb.size = size; | |
1287 | buf->vb.field = field; | |
1288 | buf->fmt = &fh->video_fmt; | |
1289 | buf->vb.field = fh->video_fmt.field; | |
1290 | ||
1291 | sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); | |
1292 | ||
1293 | if( 0 != IS_PLANAR(sfmt->trans)) { | |
1294 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); | |
1295 | saa7146_pgtable_free(dev->pci, &buf->pt[1]); | |
1296 | saa7146_pgtable_free(dev->pci, &buf->pt[2]); | |
1297 | ||
1298 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); | |
1299 | saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); | |
1300 | saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); | |
1301 | } else { | |
1302 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); | |
1303 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); | |
1304 | } | |
1305 | ||
c7b0ac05 | 1306 | err = videobuf_iolock(q,&buf->vb, &vv->ov_fb); |
1da177e4 LT |
1307 | if (err) |
1308 | goto oops; | |
1309 | err = saa7146_pgtable_build(dev,buf); | |
1310 | if (err) | |
1311 | goto oops; | |
1312 | } | |
0fc0686e | 1313 | buf->vb.state = VIDEOBUF_PREPARED; |
1da177e4 LT |
1314 | buf->activate = buffer_activate; |
1315 | ||
1316 | return 0; | |
1317 | ||
1318 | oops: | |
1319 | DEB_D(("error out.\n")); | |
c7b0ac05 | 1320 | saa7146_dma_free(dev,q,buf); |
1da177e4 LT |
1321 | |
1322 | return err; | |
1323 | } | |
1324 | ||
1325 | static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) | |
1326 | { | |
1327 | struct file *file = q->priv_data; | |
1328 | struct saa7146_fh *fh = file->private_data; | |
1329 | ||
1330 | if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) | |
1331 | *count = MAX_SAA7146_CAPTURE_BUFFERS; | |
1332 | ||
1333 | *size = fh->video_fmt.sizeimage; | |
1334 | ||
1335 | /* check if we exceed the "max_memory" parameter */ | |
1336 | if( (*count * *size) > (max_memory*1048576) ) { | |
1337 | *count = (max_memory*1048576) / *size; | |
1338 | } | |
1339 | ||
1340 | DEB_CAP(("%d buffers, %d bytes each.\n",*count,*size)); | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) | |
1346 | { | |
1347 | struct file *file = q->priv_data; | |
1348 | struct saa7146_fh *fh = file->private_data; | |
1349 | struct saa7146_dev *dev = fh->dev; | |
1350 | struct saa7146_vv *vv = dev->vv_data; | |
1351 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1352 | ||
1353 | DEB_CAP(("vbuf:%p\n",vb)); | |
1354 | saa7146_buffer_queue(fh->dev,&vv->video_q,buf); | |
1355 | } | |
1356 | ||
1da177e4 LT |
1357 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) |
1358 | { | |
1359 | struct file *file = q->priv_data; | |
1360 | struct saa7146_fh *fh = file->private_data; | |
1361 | struct saa7146_dev *dev = fh->dev; | |
1362 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; | |
1363 | ||
1364 | DEB_CAP(("vbuf:%p\n",vb)); | |
c7b0ac05 | 1365 | saa7146_dma_free(dev,q,buf); |
1da177e4 LT |
1366 | } |
1367 | ||
1368 | static struct videobuf_queue_ops video_qops = { | |
1369 | .buf_setup = buffer_setup, | |
1370 | .buf_prepare = buffer_prepare, | |
1371 | .buf_queue = buffer_queue, | |
1372 | .buf_release = buffer_release, | |
1373 | }; | |
1374 | ||
1375 | /********************************************************************************/ | |
1376 | /* file operations */ | |
1377 | ||
1378 | static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) | |
1379 | { | |
afd1a0c9 | 1380 | INIT_LIST_HEAD(&vv->video_q.queue); |
1da177e4 LT |
1381 | |
1382 | init_timer(&vv->video_q.timeout); | |
1383 | vv->video_q.timeout.function = saa7146_buffer_timeout; | |
1384 | vv->video_q.timeout.data = (unsigned long)(&vv->video_q); | |
1385 | vv->video_q.dev = dev; | |
1386 | ||
1387 | /* set some default values */ | |
1388 | vv->standard = &dev->ext_vv_data->stds[0]; | |
1389 | ||
1390 | /* FIXME: what's this? */ | |
1391 | vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; | |
1392 | vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; | |
1393 | } | |
1394 | ||
1395 | ||
1396 | static int video_open(struct saa7146_dev *dev, struct file *file) | |
1397 | { | |
1398 | struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data; | |
1399 | struct saa7146_format *sfmt; | |
1400 | ||
1401 | fh->video_fmt.width = 384; | |
1402 | fh->video_fmt.height = 288; | |
1403 | fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; | |
1404 | fh->video_fmt.bytesperline = 0; | |
1405 | fh->video_fmt.field = V4L2_FIELD_ANY; | |
1406 | sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); | |
1407 | fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; | |
1408 | ||
0705135e GL |
1409 | videobuf_queue_sg_init(&fh->video_q, &video_qops, |
1410 | &dev->pci->dev, &dev->slock, | |
1da177e4 LT |
1411 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
1412 | V4L2_FIELD_INTERLACED, | |
1413 | sizeof(struct saa7146_buf), | |
1414 | file); | |
1415 | ||
1da177e4 LT |
1416 | return 0; |
1417 | } | |
1418 | ||
1419 | ||
1420 | static void video_close(struct saa7146_dev *dev, struct file *file) | |
1421 | { | |
1422 | struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data; | |
1423 | struct saa7146_vv *vv = dev->vv_data; | |
2970c492 | 1424 | struct videobuf_queue *q = &fh->video_q; |
1da177e4 LT |
1425 | int err; |
1426 | ||
1427 | if (IS_CAPTURE_ACTIVE(fh) != 0) { | |
1428 | err = video_end(fh, file); | |
1429 | } else if (IS_OVERLAY_ACTIVE(fh) != 0) { | |
1430 | err = saa7146_stop_preview(fh); | |
1431 | } | |
1432 | ||
19bc5133 | 1433 | videobuf_stop(q); |
2970c492 | 1434 | |
1da177e4 LT |
1435 | /* hmm, why is this function declared void? */ |
1436 | /* return err */ | |
1437 | } | |
1438 | ||
1439 | ||
1440 | static void video_irq_done(struct saa7146_dev *dev, unsigned long st) | |
1441 | { | |
1442 | struct saa7146_vv *vv = dev->vv_data; | |
1443 | struct saa7146_dmaqueue *q = &vv->video_q; | |
1444 | ||
1445 | spin_lock(&dev->slock); | |
1446 | DEB_CAP(("called.\n")); | |
1447 | ||
1448 | /* only finish the buffer if we have one... */ | |
1449 | if( NULL != q->curr ) { | |
0fc0686e | 1450 | saa7146_buffer_finish(dev,q,VIDEOBUF_DONE); |
1da177e4 LT |
1451 | } |
1452 | saa7146_buffer_next(dev,q,0); | |
1453 | ||
1454 | spin_unlock(&dev->slock); | |
1455 | } | |
1456 | ||
1457 | static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
1458 | { | |
1459 | struct saa7146_fh *fh = file->private_data; | |
1460 | struct saa7146_dev *dev = fh->dev; | |
1461 | struct saa7146_vv *vv = dev->vv_data; | |
1462 | ssize_t ret = 0; | |
1463 | ||
1464 | DEB_EE(("called.\n")); | |
1465 | ||
1466 | if ((vv->video_status & STATUS_CAPTURE) != 0) { | |
1467 | /* fixme: should we allow read() captures while streaming capture? */ | |
1468 | if (vv->video_fh == fh) { | |
1469 | DEB_S(("already capturing.\n")); | |
1470 | return -EBUSY; | |
1471 | } | |
1472 | DEB_S(("already capturing in another open.\n")); | |
1473 | return -EBUSY; | |
1474 | } | |
1475 | ||
1476 | ret = video_begin(fh); | |
1477 | if( 0 != ret) { | |
1478 | goto out; | |
1479 | } | |
1480 | ||
1481 | ret = videobuf_read_one(&fh->video_q , data, count, ppos, | |
1482 | file->f_flags & O_NONBLOCK); | |
1483 | if (ret != 0) { | |
1484 | video_end(fh, file); | |
1485 | } else { | |
1486 | ret = video_end(fh, file); | |
1487 | } | |
1488 | out: | |
1489 | /* restart overlay if it was active before */ | |
1490 | if (vv->ov_suspend != NULL) { | |
1491 | saa7146_start_preview(vv->ov_suspend); | |
1492 | vv->ov_suspend = NULL; | |
1493 | } | |
1494 | ||
1495 | return ret; | |
1496 | } | |
1497 | ||
1498 | struct saa7146_use_ops saa7146_video_uops = { | |
1499 | .init = video_init, | |
1500 | .open = video_open, | |
1501 | .release = video_close, | |
1502 | .irq_done = video_irq_done, | |
1503 | .read = video_read, | |
1504 | }; |