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1 | /* | |
2 | em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB | |
3 | video capture devices | |
4 | ||
5 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> | |
6 | Markus Rechberger <mrechberger@gmail.com> | |
7 | Mauro Carvalho Chehab <mchehab@infradead.org> | |
8 | Sascha Sommer <saschasommer@freenet.de> | |
9 | ||
10 | Some parts based on SN9C10x PC Camera Controllers GPL driver made | |
11 | by Luca Risolia <luca.risolia@studio.unibo.it> | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | #include <linux/init.h> | |
29 | #include <linux/list.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/bitmap.h> | |
33 | #include <linux/usb.h> | |
34 | #include <linux/i2c.h> | |
35 | #include <linux/version.h> | |
36 | #include <linux/mm.h> | |
37 | #include <linux/mutex.h> | |
38 | #include <linux/slab.h> | |
39 | ||
40 | #include "em28xx.h" | |
41 | #include <media/v4l2-common.h> | |
42 | #include <media/v4l2-ioctl.h> | |
43 | #include <media/v4l2-chip-ident.h> | |
44 | #include <media/msp3400.h> | |
45 | #include <media/tuner.h> | |
46 | ||
47 | #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ | |
48 | "Markus Rechberger <mrechberger@gmail.com>, " \ | |
49 | "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ | |
50 | "Sascha Sommer <saschasommer@freenet.de>" | |
51 | ||
52 | #define DRIVER_DESC "Empia em28xx based USB video device driver" | |
53 | #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 2) | |
54 | ||
55 | #define em28xx_videodbg(fmt, arg...) do {\ | |
56 | if (video_debug) \ | |
57 | printk(KERN_INFO "%s %s :"fmt, \ | |
58 | dev->name, __func__ , ##arg); } while (0) | |
59 | ||
60 | static unsigned int isoc_debug; | |
61 | module_param(isoc_debug, int, 0644); | |
62 | MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); | |
63 | ||
64 | #define em28xx_isocdbg(fmt, arg...) \ | |
65 | do {\ | |
66 | if (isoc_debug) { \ | |
67 | printk(KERN_INFO "%s %s :"fmt, \ | |
68 | dev->name, __func__ , ##arg); \ | |
69 | } \ | |
70 | } while (0) | |
71 | ||
72 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
73 | MODULE_DESCRIPTION(DRIVER_DESC); | |
74 | MODULE_LICENSE("GPL"); | |
75 | ||
76 | static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
77 | static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
78 | static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
79 | ||
80 | module_param_array(video_nr, int, NULL, 0444); | |
81 | module_param_array(vbi_nr, int, NULL, 0444); | |
82 | module_param_array(radio_nr, int, NULL, 0444); | |
83 | MODULE_PARM_DESC(video_nr, "video device numbers"); | |
84 | MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); | |
85 | MODULE_PARM_DESC(radio_nr, "radio device numbers"); | |
86 | ||
87 | static unsigned int video_debug; | |
88 | module_param(video_debug, int, 0644); | |
89 | MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); | |
90 | ||
91 | /* supported video standards */ | |
92 | static struct em28xx_fmt format[] = { | |
93 | { | |
94 | .name = "16 bpp YUY2, 4:2:2, packed", | |
95 | .fourcc = V4L2_PIX_FMT_YUYV, | |
96 | .depth = 16, | |
97 | .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, | |
98 | }, { | |
99 | .name = "16 bpp RGB 565, LE", | |
100 | .fourcc = V4L2_PIX_FMT_RGB565, | |
101 | .depth = 16, | |
102 | .reg = EM28XX_OUTFMT_RGB_16_656, | |
103 | }, { | |
104 | .name = "8 bpp Bayer BGBG..GRGR", | |
105 | .fourcc = V4L2_PIX_FMT_SBGGR8, | |
106 | .depth = 8, | |
107 | .reg = EM28XX_OUTFMT_RGB_8_BGBG, | |
108 | }, { | |
109 | .name = "8 bpp Bayer GRGR..BGBG", | |
110 | .fourcc = V4L2_PIX_FMT_SGRBG8, | |
111 | .depth = 8, | |
112 | .reg = EM28XX_OUTFMT_RGB_8_GRGR, | |
113 | }, { | |
114 | .name = "8 bpp Bayer GBGB..RGRG", | |
115 | .fourcc = V4L2_PIX_FMT_SGBRG8, | |
116 | .depth = 8, | |
117 | .reg = EM28XX_OUTFMT_RGB_8_GBGB, | |
118 | }, { | |
119 | .name = "12 bpp YUV411", | |
120 | .fourcc = V4L2_PIX_FMT_YUV411P, | |
121 | .depth = 12, | |
122 | .reg = EM28XX_OUTFMT_YUV411, | |
123 | }, | |
124 | }; | |
125 | ||
126 | /* supported controls */ | |
127 | /* Common to all boards */ | |
128 | static struct v4l2_queryctrl ac97_qctrl[] = { | |
129 | { | |
130 | .id = V4L2_CID_AUDIO_VOLUME, | |
131 | .type = V4L2_CTRL_TYPE_INTEGER, | |
132 | .name = "Volume", | |
133 | .minimum = 0x0, | |
134 | .maximum = 0x1f, | |
135 | .step = 0x1, | |
136 | .default_value = 0x1f, | |
137 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
138 | }, { | |
139 | .id = V4L2_CID_AUDIO_MUTE, | |
140 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
141 | .name = "Mute", | |
142 | .minimum = 0, | |
143 | .maximum = 1, | |
144 | .step = 1, | |
145 | .default_value = 1, | |
146 | .flags = 0, | |
147 | } | |
148 | }; | |
149 | ||
150 | /* ------------------------------------------------------------------ | |
151 | DMA and thread functions | |
152 | ------------------------------------------------------------------*/ | |
153 | ||
154 | /* | |
155 | * Announces that a buffer were filled and request the next | |
156 | */ | |
157 | static inline void buffer_filled(struct em28xx *dev, | |
158 | struct em28xx_dmaqueue *dma_q, | |
159 | struct em28xx_buffer *buf) | |
160 | { | |
161 | /* Advice that buffer was filled */ | |
162 | em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); | |
163 | buf->vb.state = VIDEOBUF_DONE; | |
164 | buf->vb.field_count++; | |
165 | do_gettimeofday(&buf->vb.ts); | |
166 | ||
167 | dev->isoc_ctl.vid_buf = NULL; | |
168 | ||
169 | list_del(&buf->vb.queue); | |
170 | wake_up(&buf->vb.done); | |
171 | } | |
172 | ||
173 | static inline void vbi_buffer_filled(struct em28xx *dev, | |
174 | struct em28xx_dmaqueue *dma_q, | |
175 | struct em28xx_buffer *buf) | |
176 | { | |
177 | /* Advice that buffer was filled */ | |
178 | em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); | |
179 | ||
180 | buf->vb.state = VIDEOBUF_DONE; | |
181 | buf->vb.field_count++; | |
182 | do_gettimeofday(&buf->vb.ts); | |
183 | ||
184 | dev->isoc_ctl.vbi_buf = NULL; | |
185 | ||
186 | list_del(&buf->vb.queue); | |
187 | wake_up(&buf->vb.done); | |
188 | } | |
189 | ||
190 | /* | |
191 | * Identify the buffer header type and properly handles | |
192 | */ | |
193 | static void em28xx_copy_video(struct em28xx *dev, | |
194 | struct em28xx_dmaqueue *dma_q, | |
195 | struct em28xx_buffer *buf, | |
196 | unsigned char *p, | |
197 | unsigned char *outp, unsigned long len) | |
198 | { | |
199 | void *fieldstart, *startwrite, *startread; | |
200 | int linesdone, currlinedone, offset, lencopy, remain; | |
201 | int bytesperline = dev->width << 1; | |
202 | ||
203 | if (dma_q->pos + len > buf->vb.size) | |
204 | len = buf->vb.size - dma_q->pos; | |
205 | ||
206 | startread = p; | |
207 | remain = len; | |
208 | ||
209 | if (dev->progressive) | |
210 | fieldstart = outp; | |
211 | else { | |
212 | /* Interlaces two half frames */ | |
213 | if (buf->top_field) | |
214 | fieldstart = outp; | |
215 | else | |
216 | fieldstart = outp + bytesperline; | |
217 | } | |
218 | ||
219 | linesdone = dma_q->pos / bytesperline; | |
220 | currlinedone = dma_q->pos % bytesperline; | |
221 | ||
222 | if (dev->progressive) | |
223 | offset = linesdone * bytesperline + currlinedone; | |
224 | else | |
225 | offset = linesdone * bytesperline * 2 + currlinedone; | |
226 | ||
227 | startwrite = fieldstart + offset; | |
228 | lencopy = bytesperline - currlinedone; | |
229 | lencopy = lencopy > remain ? remain : lencopy; | |
230 | ||
231 | if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { | |
232 | em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n", | |
233 | ((char *)startwrite + lencopy) - | |
234 | ((char *)outp + buf->vb.size)); | |
235 | remain = (char *)outp + buf->vb.size - (char *)startwrite; | |
236 | lencopy = remain; | |
237 | } | |
238 | if (lencopy <= 0) | |
239 | return; | |
240 | memcpy(startwrite, startread, lencopy); | |
241 | ||
242 | remain -= lencopy; | |
243 | ||
244 | while (remain > 0) { | |
245 | startwrite += lencopy + bytesperline; | |
246 | startread += lencopy; | |
247 | if (bytesperline > remain) | |
248 | lencopy = remain; | |
249 | else | |
250 | lencopy = bytesperline; | |
251 | ||
252 | if ((char *)startwrite + lencopy > (char *)outp + | |
253 | buf->vb.size) { | |
254 | em28xx_isocdbg("Overflow of %zi bytes past buffer end" | |
255 | "(2)\n", | |
256 | ((char *)startwrite + lencopy) - | |
257 | ((char *)outp + buf->vb.size)); | |
258 | lencopy = remain = (char *)outp + buf->vb.size - | |
259 | (char *)startwrite; | |
260 | } | |
261 | if (lencopy <= 0) | |
262 | break; | |
263 | ||
264 | memcpy(startwrite, startread, lencopy); | |
265 | ||
266 | remain -= lencopy; | |
267 | } | |
268 | ||
269 | dma_q->pos += len; | |
270 | } | |
271 | ||
272 | static void em28xx_copy_vbi(struct em28xx *dev, | |
273 | struct em28xx_dmaqueue *dma_q, | |
274 | struct em28xx_buffer *buf, | |
275 | unsigned char *p, | |
276 | unsigned char *outp, unsigned long len) | |
277 | { | |
278 | void *startwrite, *startread; | |
279 | int offset; | |
280 | int bytesperline; | |
281 | ||
282 | if (dev == NULL) { | |
283 | em28xx_isocdbg("dev is null\n"); | |
284 | return; | |
285 | } | |
286 | bytesperline = dev->vbi_width; | |
287 | ||
288 | if (dma_q == NULL) { | |
289 | em28xx_isocdbg("dma_q is null\n"); | |
290 | return; | |
291 | } | |
292 | if (buf == NULL) { | |
293 | return; | |
294 | } | |
295 | if (p == NULL) { | |
296 | em28xx_isocdbg("p is null\n"); | |
297 | return; | |
298 | } | |
299 | if (outp == NULL) { | |
300 | em28xx_isocdbg("outp is null\n"); | |
301 | return; | |
302 | } | |
303 | ||
304 | if (dma_q->pos + len > buf->vb.size) | |
305 | len = buf->vb.size - dma_q->pos; | |
306 | ||
307 | startread = p; | |
308 | ||
309 | startwrite = outp + dma_q->pos; | |
310 | offset = dma_q->pos; | |
311 | ||
312 | /* Make sure the bottom field populates the second half of the frame */ | |
313 | if (buf->top_field == 0) { | |
314 | startwrite += bytesperline * dev->vbi_height; | |
315 | offset += bytesperline * dev->vbi_height; | |
316 | } | |
317 | ||
318 | memcpy(startwrite, startread, len); | |
319 | dma_q->pos += len; | |
320 | } | |
321 | ||
322 | static inline void print_err_status(struct em28xx *dev, | |
323 | int packet, int status) | |
324 | { | |
325 | char *errmsg = "Unknown"; | |
326 | ||
327 | switch (status) { | |
328 | case -ENOENT: | |
329 | errmsg = "unlinked synchronuously"; | |
330 | break; | |
331 | case -ECONNRESET: | |
332 | errmsg = "unlinked asynchronuously"; | |
333 | break; | |
334 | case -ENOSR: | |
335 | errmsg = "Buffer error (overrun)"; | |
336 | break; | |
337 | case -EPIPE: | |
338 | errmsg = "Stalled (device not responding)"; | |
339 | break; | |
340 | case -EOVERFLOW: | |
341 | errmsg = "Babble (bad cable?)"; | |
342 | break; | |
343 | case -EPROTO: | |
344 | errmsg = "Bit-stuff error (bad cable?)"; | |
345 | break; | |
346 | case -EILSEQ: | |
347 | errmsg = "CRC/Timeout (could be anything)"; | |
348 | break; | |
349 | case -ETIME: | |
350 | errmsg = "Device does not respond"; | |
351 | break; | |
352 | } | |
353 | if (packet < 0) { | |
354 | em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); | |
355 | } else { | |
356 | em28xx_isocdbg("URB packet %d, status %d [%s].\n", | |
357 | packet, status, errmsg); | |
358 | } | |
359 | } | |
360 | ||
361 | /* | |
362 | * video-buf generic routine to get the next available buffer | |
363 | */ | |
364 | static inline void get_next_buf(struct em28xx_dmaqueue *dma_q, | |
365 | struct em28xx_buffer **buf) | |
366 | { | |
367 | struct em28xx *dev = container_of(dma_q, struct em28xx, vidq); | |
368 | char *outp; | |
369 | ||
370 | if (list_empty(&dma_q->active)) { | |
371 | em28xx_isocdbg("No active queue to serve\n"); | |
372 | dev->isoc_ctl.vid_buf = NULL; | |
373 | *buf = NULL; | |
374 | return; | |
375 | } | |
376 | ||
377 | /* Get the next buffer */ | |
378 | *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue); | |
379 | ||
380 | /* Cleans up buffer - Useful for testing for frame/URB loss */ | |
381 | outp = videobuf_to_vmalloc(&(*buf)->vb); | |
382 | memset(outp, 0, (*buf)->vb.size); | |
383 | ||
384 | dev->isoc_ctl.vid_buf = *buf; | |
385 | ||
386 | return; | |
387 | } | |
388 | ||
389 | /* | |
390 | * video-buf generic routine to get the next available VBI buffer | |
391 | */ | |
392 | static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q, | |
393 | struct em28xx_buffer **buf) | |
394 | { | |
395 | struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq); | |
396 | char *outp; | |
397 | ||
398 | if (list_empty(&dma_q->active)) { | |
399 | em28xx_isocdbg("No active queue to serve\n"); | |
400 | dev->isoc_ctl.vbi_buf = NULL; | |
401 | *buf = NULL; | |
402 | return; | |
403 | } | |
404 | ||
405 | /* Get the next buffer */ | |
406 | *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue); | |
407 | /* Cleans up buffer - Useful for testing for frame/URB loss */ | |
408 | outp = videobuf_to_vmalloc(&(*buf)->vb); | |
409 | memset(outp, 0x00, (*buf)->vb.size); | |
410 | ||
411 | dev->isoc_ctl.vbi_buf = *buf; | |
412 | ||
413 | return; | |
414 | } | |
415 | ||
416 | /* | |
417 | * Controls the isoc copy of each urb packet | |
418 | */ | |
419 | static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb) | |
420 | { | |
421 | struct em28xx_buffer *buf; | |
422 | struct em28xx_dmaqueue *dma_q = &dev->vidq; | |
423 | unsigned char *outp = NULL; | |
424 | int i, len = 0, rc = 1; | |
425 | unsigned char *p; | |
426 | ||
427 | if (!dev) | |
428 | return 0; | |
429 | ||
430 | if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) | |
431 | return 0; | |
432 | ||
433 | if (urb->status < 0) { | |
434 | print_err_status(dev, -1, urb->status); | |
435 | if (urb->status == -ENOENT) | |
436 | return 0; | |
437 | } | |
438 | ||
439 | buf = dev->isoc_ctl.vid_buf; | |
440 | if (buf != NULL) | |
441 | outp = videobuf_to_vmalloc(&buf->vb); | |
442 | ||
443 | for (i = 0; i < urb->number_of_packets; i++) { | |
444 | int status = urb->iso_frame_desc[i].status; | |
445 | ||
446 | if (status < 0) { | |
447 | print_err_status(dev, i, status); | |
448 | if (urb->iso_frame_desc[i].status != -EPROTO) | |
449 | continue; | |
450 | } | |
451 | ||
452 | len = urb->iso_frame_desc[i].actual_length - 4; | |
453 | ||
454 | if (urb->iso_frame_desc[i].actual_length <= 0) { | |
455 | /* em28xx_isocdbg("packet %d is empty",i); - spammy */ | |
456 | continue; | |
457 | } | |
458 | if (urb->iso_frame_desc[i].actual_length > | |
459 | dev->max_pkt_size) { | |
460 | em28xx_isocdbg("packet bigger than packet size"); | |
461 | continue; | |
462 | } | |
463 | ||
464 | p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
465 | ||
466 | /* FIXME: incomplete buffer checks where removed to make | |
467 | logic simpler. Impacts of those changes should be evaluated | |
468 | */ | |
469 | if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) { | |
470 | em28xx_isocdbg("VBI HEADER!!!\n"); | |
471 | /* FIXME: Should add vbi copy */ | |
472 | continue; | |
473 | } | |
474 | if (p[0] == 0x22 && p[1] == 0x5a) { | |
475 | em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2], | |
476 | len, (p[2] & 1) ? "odd" : "even"); | |
477 | ||
478 | if (dev->progressive || !(p[2] & 1)) { | |
479 | if (buf != NULL) | |
480 | buffer_filled(dev, dma_q, buf); | |
481 | get_next_buf(dma_q, &buf); | |
482 | if (buf == NULL) | |
483 | outp = NULL; | |
484 | else | |
485 | outp = videobuf_to_vmalloc(&buf->vb); | |
486 | } | |
487 | ||
488 | if (buf != NULL) { | |
489 | if (p[2] & 1) | |
490 | buf->top_field = 0; | |
491 | else | |
492 | buf->top_field = 1; | |
493 | } | |
494 | ||
495 | dma_q->pos = 0; | |
496 | } | |
497 | if (buf != NULL) { | |
498 | if (p[0] != 0x88 && p[0] != 0x22) { | |
499 | em28xx_isocdbg("frame is not complete\n"); | |
500 | len += 4; | |
501 | } else { | |
502 | p += 4; | |
503 | } | |
504 | em28xx_copy_video(dev, dma_q, buf, p, outp, len); | |
505 | } | |
506 | } | |
507 | return rc; | |
508 | } | |
509 | ||
510 | /* Version of isoc handler that takes into account a mixture of video and | |
511 | VBI data */ | |
512 | static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb) | |
513 | { | |
514 | struct em28xx_buffer *buf, *vbi_buf; | |
515 | struct em28xx_dmaqueue *dma_q = &dev->vidq; | |
516 | struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; | |
517 | unsigned char *outp = NULL; | |
518 | unsigned char *vbioutp = NULL; | |
519 | int i, len = 0, rc = 1; | |
520 | unsigned char *p; | |
521 | int vbi_size; | |
522 | ||
523 | if (!dev) | |
524 | return 0; | |
525 | ||
526 | if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) | |
527 | return 0; | |
528 | ||
529 | if (urb->status < 0) { | |
530 | print_err_status(dev, -1, urb->status); | |
531 | if (urb->status == -ENOENT) | |
532 | return 0; | |
533 | } | |
534 | ||
535 | buf = dev->isoc_ctl.vid_buf; | |
536 | if (buf != NULL) | |
537 | outp = videobuf_to_vmalloc(&buf->vb); | |
538 | ||
539 | vbi_buf = dev->isoc_ctl.vbi_buf; | |
540 | if (vbi_buf != NULL) | |
541 | vbioutp = videobuf_to_vmalloc(&vbi_buf->vb); | |
542 | ||
543 | for (i = 0; i < urb->number_of_packets; i++) { | |
544 | int status = urb->iso_frame_desc[i].status; | |
545 | ||
546 | if (status < 0) { | |
547 | print_err_status(dev, i, status); | |
548 | if (urb->iso_frame_desc[i].status != -EPROTO) | |
549 | continue; | |
550 | } | |
551 | ||
552 | len = urb->iso_frame_desc[i].actual_length; | |
553 | if (urb->iso_frame_desc[i].actual_length <= 0) { | |
554 | /* em28xx_isocdbg("packet %d is empty",i); - spammy */ | |
555 | continue; | |
556 | } | |
557 | if (urb->iso_frame_desc[i].actual_length > | |
558 | dev->max_pkt_size) { | |
559 | em28xx_isocdbg("packet bigger than packet size"); | |
560 | continue; | |
561 | } | |
562 | ||
563 | p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
564 | ||
565 | /* capture type 0 = vbi start | |
566 | capture type 1 = video start | |
567 | capture type 2 = video in progress */ | |
568 | if (p[0] == 0x33 && p[1] == 0x95) { | |
569 | dev->capture_type = 0; | |
570 | dev->vbi_read = 0; | |
571 | em28xx_isocdbg("VBI START HEADER!!!\n"); | |
572 | dev->cur_field = p[2]; | |
573 | p += 4; | |
574 | len -= 4; | |
575 | } else if (p[0] == 0x88 && p[1] == 0x88 && | |
576 | p[2] == 0x88 && p[3] == 0x88) { | |
577 | /* continuation */ | |
578 | p += 4; | |
579 | len -= 4; | |
580 | } else if (p[0] == 0x22 && p[1] == 0x5a) { | |
581 | /* start video */ | |
582 | p += 4; | |
583 | len -= 4; | |
584 | } | |
585 | ||
586 | vbi_size = dev->vbi_width * dev->vbi_height; | |
587 | ||
588 | if (dev->capture_type == 0) { | |
589 | if (dev->vbi_read >= vbi_size) { | |
590 | /* We've already read all the VBI data, so | |
591 | treat the rest as video */ | |
592 | em28xx_isocdbg("dev->vbi_read > vbi_size\n"); | |
593 | } else if ((dev->vbi_read + len) < vbi_size) { | |
594 | /* This entire frame is VBI data */ | |
595 | if (dev->vbi_read == 0 && | |
596 | (!(dev->cur_field & 1))) { | |
597 | /* Brand new frame */ | |
598 | if (vbi_buf != NULL) | |
599 | vbi_buffer_filled(dev, | |
600 | vbi_dma_q, | |
601 | vbi_buf); | |
602 | vbi_get_next_buf(vbi_dma_q, &vbi_buf); | |
603 | if (vbi_buf == NULL) | |
604 | vbioutp = NULL; | |
605 | else | |
606 | vbioutp = videobuf_to_vmalloc( | |
607 | &vbi_buf->vb); | |
608 | } | |
609 | ||
610 | if (dev->vbi_read == 0) { | |
611 | vbi_dma_q->pos = 0; | |
612 | if (vbi_buf != NULL) { | |
613 | if (dev->cur_field & 1) | |
614 | vbi_buf->top_field = 0; | |
615 | else | |
616 | vbi_buf->top_field = 1; | |
617 | } | |
618 | } | |
619 | ||
620 | dev->vbi_read += len; | |
621 | em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p, | |
622 | vbioutp, len); | |
623 | } else { | |
624 | /* Some of this frame is VBI data and some is | |
625 | video data */ | |
626 | int vbi_data_len = vbi_size - dev->vbi_read; | |
627 | dev->vbi_read += vbi_data_len; | |
628 | em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p, | |
629 | vbioutp, vbi_data_len); | |
630 | dev->capture_type = 1; | |
631 | p += vbi_data_len; | |
632 | len -= vbi_data_len; | |
633 | } | |
634 | } | |
635 | ||
636 | if (dev->capture_type == 1) { | |
637 | dev->capture_type = 2; | |
638 | if (dev->progressive || !(dev->cur_field & 1)) { | |
639 | if (buf != NULL) | |
640 | buffer_filled(dev, dma_q, buf); | |
641 | get_next_buf(dma_q, &buf); | |
642 | if (buf == NULL) | |
643 | outp = NULL; | |
644 | else | |
645 | outp = videobuf_to_vmalloc(&buf->vb); | |
646 | } | |
647 | if (buf != NULL) { | |
648 | if (dev->cur_field & 1) | |
649 | buf->top_field = 0; | |
650 | else | |
651 | buf->top_field = 1; | |
652 | } | |
653 | ||
654 | dma_q->pos = 0; | |
655 | } | |
656 | ||
657 | if (buf != NULL && dev->capture_type == 2) { | |
658 | if (len >= 4 && p[0] == 0x88 && p[1] == 0x88 && | |
659 | p[2] == 0x88 && p[3] == 0x88) { | |
660 | p += 4; | |
661 | len -= 4; | |
662 | } | |
663 | if (len >= 4 && p[0] == 0x22 && p[1] == 0x5a) { | |
664 | em28xx_isocdbg("Video frame %d, len=%i, %s\n", | |
665 | p[2], len, (p[2] & 1) ? | |
666 | "odd" : "even"); | |
667 | p += 4; | |
668 | len -= 4; | |
669 | } | |
670 | ||
671 | if (len > 0) | |
672 | em28xx_copy_video(dev, dma_q, buf, p, outp, | |
673 | len); | |
674 | } | |
675 | } | |
676 | return rc; | |
677 | } | |
678 | ||
679 | ||
680 | /* ------------------------------------------------------------------ | |
681 | Videobuf operations | |
682 | ------------------------------------------------------------------*/ | |
683 | ||
684 | static int | |
685 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) | |
686 | { | |
687 | struct em28xx_fh *fh = vq->priv_data; | |
688 | struct em28xx *dev = fh->dev; | |
689 | struct v4l2_frequency f; | |
690 | ||
691 | *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) | |
692 | >> 3; | |
693 | ||
694 | if (0 == *count) | |
695 | *count = EM28XX_DEF_BUF; | |
696 | ||
697 | if (*count < EM28XX_MIN_BUF) | |
698 | *count = EM28XX_MIN_BUF; | |
699 | ||
700 | /* Ask tuner to go to analog or radio mode */ | |
701 | memset(&f, 0, sizeof(f)); | |
702 | f.frequency = dev->ctl_freq; | |
703 | f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; | |
704 | ||
705 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | /* This is called *without* dev->slock held; please keep it that way */ | |
711 | static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf) | |
712 | { | |
713 | struct em28xx_fh *fh = vq->priv_data; | |
714 | struct em28xx *dev = fh->dev; | |
715 | unsigned long flags = 0; | |
716 | if (in_interrupt()) | |
717 | BUG(); | |
718 | ||
719 | /* We used to wait for the buffer to finish here, but this didn't work | |
720 | because, as we were keeping the state as VIDEOBUF_QUEUED, | |
721 | videobuf_queue_cancel marked it as finished for us. | |
722 | (Also, it could wedge forever if the hardware was misconfigured.) | |
723 | ||
724 | This should be safe; by the time we get here, the buffer isn't | |
725 | queued anymore. If we ever start marking the buffers as | |
726 | VIDEOBUF_ACTIVE, it won't be, though. | |
727 | */ | |
728 | spin_lock_irqsave(&dev->slock, flags); | |
729 | if (dev->isoc_ctl.vid_buf == buf) | |
730 | dev->isoc_ctl.vid_buf = NULL; | |
731 | spin_unlock_irqrestore(&dev->slock, flags); | |
732 | ||
733 | videobuf_vmalloc_free(&buf->vb); | |
734 | buf->vb.state = VIDEOBUF_NEEDS_INIT; | |
735 | } | |
736 | ||
737 | static int | |
738 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | |
739 | enum v4l2_field field) | |
740 | { | |
741 | struct em28xx_fh *fh = vq->priv_data; | |
742 | struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); | |
743 | struct em28xx *dev = fh->dev; | |
744 | int rc = 0, urb_init = 0; | |
745 | ||
746 | buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth | |
747 | + 7) >> 3; | |
748 | ||
749 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) | |
750 | return -EINVAL; | |
751 | ||
752 | buf->vb.width = dev->width; | |
753 | buf->vb.height = dev->height; | |
754 | buf->vb.field = field; | |
755 | ||
756 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { | |
757 | rc = videobuf_iolock(vq, &buf->vb, NULL); | |
758 | if (rc < 0) | |
759 | goto fail; | |
760 | } | |
761 | ||
762 | if (!dev->isoc_ctl.num_bufs) | |
763 | urb_init = 1; | |
764 | ||
765 | if (urb_init) { | |
766 | if (em28xx_vbi_supported(dev) == 1) | |
767 | rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS, | |
768 | EM28XX_NUM_BUFS, | |
769 | dev->max_pkt_size, | |
770 | em28xx_isoc_copy_vbi); | |
771 | else | |
772 | rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS, | |
773 | EM28XX_NUM_BUFS, | |
774 | dev->max_pkt_size, | |
775 | em28xx_isoc_copy); | |
776 | if (rc < 0) | |
777 | goto fail; | |
778 | } | |
779 | ||
780 | buf->vb.state = VIDEOBUF_PREPARED; | |
781 | return 0; | |
782 | ||
783 | fail: | |
784 | free_buffer(vq, buf); | |
785 | return rc; | |
786 | } | |
787 | ||
788 | static void | |
789 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | |
790 | { | |
791 | struct em28xx_buffer *buf = container_of(vb, | |
792 | struct em28xx_buffer, | |
793 | vb); | |
794 | struct em28xx_fh *fh = vq->priv_data; | |
795 | struct em28xx *dev = fh->dev; | |
796 | struct em28xx_dmaqueue *vidq = &dev->vidq; | |
797 | ||
798 | buf->vb.state = VIDEOBUF_QUEUED; | |
799 | list_add_tail(&buf->vb.queue, &vidq->active); | |
800 | ||
801 | } | |
802 | ||
803 | static void buffer_release(struct videobuf_queue *vq, | |
804 | struct videobuf_buffer *vb) | |
805 | { | |
806 | struct em28xx_buffer *buf = container_of(vb, | |
807 | struct em28xx_buffer, | |
808 | vb); | |
809 | struct em28xx_fh *fh = vq->priv_data; | |
810 | struct em28xx *dev = (struct em28xx *)fh->dev; | |
811 | ||
812 | em28xx_isocdbg("em28xx: called buffer_release\n"); | |
813 | ||
814 | free_buffer(vq, buf); | |
815 | } | |
816 | ||
817 | static struct videobuf_queue_ops em28xx_video_qops = { | |
818 | .buf_setup = buffer_setup, | |
819 | .buf_prepare = buffer_prepare, | |
820 | .buf_queue = buffer_queue, | |
821 | .buf_release = buffer_release, | |
822 | }; | |
823 | ||
824 | /********************* v4l2 interface **************************************/ | |
825 | ||
826 | static void video_mux(struct em28xx *dev, int index) | |
827 | { | |
828 | dev->ctl_input = index; | |
829 | dev->ctl_ainput = INPUT(index)->amux; | |
830 | dev->ctl_aoutput = INPUT(index)->aout; | |
831 | ||
832 | if (!dev->ctl_aoutput) | |
833 | dev->ctl_aoutput = EM28XX_AOUT_MASTER; | |
834 | ||
835 | v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing, | |
836 | INPUT(index)->vmux, 0, 0); | |
837 | ||
838 | if (dev->board.has_msp34xx) { | |
839 | if (dev->i2s_speed) { | |
840 | v4l2_device_call_all(&dev->v4l2_dev, 0, audio, | |
841 | s_i2s_clock_freq, dev->i2s_speed); | |
842 | } | |
843 | /* Note: this is msp3400 specific */ | |
844 | v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, | |
845 | dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); | |
846 | } | |
847 | ||
848 | if (dev->board.adecoder != EM28XX_NOADECODER) { | |
849 | v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing, | |
850 | dev->ctl_ainput, dev->ctl_aoutput, 0); | |
851 | } | |
852 | ||
853 | em28xx_audio_analog_set(dev); | |
854 | } | |
855 | ||
856 | /* Usage lock check functions */ | |
857 | static int res_get(struct em28xx_fh *fh, unsigned int bit) | |
858 | { | |
859 | struct em28xx *dev = fh->dev; | |
860 | ||
861 | if (fh->resources & bit) | |
862 | /* have it already allocated */ | |
863 | return 1; | |
864 | ||
865 | /* is it free? */ | |
866 | if (dev->resources & bit) { | |
867 | /* no, someone else uses it */ | |
868 | return 0; | |
869 | } | |
870 | /* it's free, grab it */ | |
871 | fh->resources |= bit; | |
872 | dev->resources |= bit; | |
873 | em28xx_videodbg("res: get %d\n", bit); | |
874 | return 1; | |
875 | } | |
876 | ||
877 | static int res_check(struct em28xx_fh *fh, unsigned int bit) | |
878 | { | |
879 | return fh->resources & bit; | |
880 | } | |
881 | ||
882 | static int res_locked(struct em28xx *dev, unsigned int bit) | |
883 | { | |
884 | return dev->resources & bit; | |
885 | } | |
886 | ||
887 | static void res_free(struct em28xx_fh *fh, unsigned int bits) | |
888 | { | |
889 | struct em28xx *dev = fh->dev; | |
890 | ||
891 | BUG_ON((fh->resources & bits) != bits); | |
892 | ||
893 | fh->resources &= ~bits; | |
894 | dev->resources &= ~bits; | |
895 | em28xx_videodbg("res: put %d\n", bits); | |
896 | } | |
897 | ||
898 | static int get_ressource(struct em28xx_fh *fh) | |
899 | { | |
900 | switch (fh->type) { | |
901 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
902 | return EM28XX_RESOURCE_VIDEO; | |
903 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
904 | return EM28XX_RESOURCE_VBI; | |
905 | default: | |
906 | BUG(); | |
907 | return 0; | |
908 | } | |
909 | } | |
910 | ||
911 | /* | |
912 | * ac97_queryctrl() | |
913 | * return the ac97 supported controls | |
914 | */ | |
915 | static int ac97_queryctrl(struct v4l2_queryctrl *qc) | |
916 | { | |
917 | int i; | |
918 | ||
919 | for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) { | |
920 | if (qc->id && qc->id == ac97_qctrl[i].id) { | |
921 | memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc)); | |
922 | return 0; | |
923 | } | |
924 | } | |
925 | ||
926 | /* Control is not ac97 related */ | |
927 | return 1; | |
928 | } | |
929 | ||
930 | /* | |
931 | * ac97_get_ctrl() | |
932 | * return the current values for ac97 mute and volume | |
933 | */ | |
934 | static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) | |
935 | { | |
936 | switch (ctrl->id) { | |
937 | case V4L2_CID_AUDIO_MUTE: | |
938 | ctrl->value = dev->mute; | |
939 | return 0; | |
940 | case V4L2_CID_AUDIO_VOLUME: | |
941 | ctrl->value = dev->volume; | |
942 | return 0; | |
943 | default: | |
944 | /* Control is not ac97 related */ | |
945 | return 1; | |
946 | } | |
947 | } | |
948 | ||
949 | /* | |
950 | * ac97_set_ctrl() | |
951 | * set values for ac97 mute and volume | |
952 | */ | |
953 | static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) | |
954 | { | |
955 | int i; | |
956 | ||
957 | for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) | |
958 | if (ctrl->id == ac97_qctrl[i].id) | |
959 | goto handle; | |
960 | ||
961 | /* Announce that hasn't handle it */ | |
962 | return 1; | |
963 | ||
964 | handle: | |
965 | if (ctrl->value < ac97_qctrl[i].minimum || | |
966 | ctrl->value > ac97_qctrl[i].maximum) | |
967 | return -ERANGE; | |
968 | ||
969 | switch (ctrl->id) { | |
970 | case V4L2_CID_AUDIO_MUTE: | |
971 | dev->mute = ctrl->value; | |
972 | break; | |
973 | case V4L2_CID_AUDIO_VOLUME: | |
974 | dev->volume = ctrl->value; | |
975 | break; | |
976 | } | |
977 | ||
978 | return em28xx_audio_analog_set(dev); | |
979 | } | |
980 | ||
981 | static int check_dev(struct em28xx *dev) | |
982 | { | |
983 | if (dev->state & DEV_DISCONNECTED) { | |
984 | em28xx_errdev("v4l2 ioctl: device not present\n"); | |
985 | return -ENODEV; | |
986 | } | |
987 | ||
988 | if (dev->state & DEV_MISCONFIGURED) { | |
989 | em28xx_errdev("v4l2 ioctl: device is misconfigured; " | |
990 | "close and open it again\n"); | |
991 | return -EIO; | |
992 | } | |
993 | return 0; | |
994 | } | |
995 | ||
996 | static void get_scale(struct em28xx *dev, | |
997 | unsigned int width, unsigned int height, | |
998 | unsigned int *hscale, unsigned int *vscale) | |
999 | { | |
1000 | unsigned int maxw = norm_maxw(dev); | |
1001 | unsigned int maxh = norm_maxh(dev); | |
1002 | ||
1003 | *hscale = (((unsigned long)maxw) << 12) / width - 4096L; | |
1004 | if (*hscale >= 0x4000) | |
1005 | *hscale = 0x3fff; | |
1006 | ||
1007 | *vscale = (((unsigned long)maxh) << 12) / height - 4096L; | |
1008 | if (*vscale >= 0x4000) | |
1009 | *vscale = 0x3fff; | |
1010 | } | |
1011 | ||
1012 | /* ------------------------------------------------------------------ | |
1013 | IOCTL vidioc handling | |
1014 | ------------------------------------------------------------------*/ | |
1015 | ||
1016 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
1017 | struct v4l2_format *f) | |
1018 | { | |
1019 | struct em28xx_fh *fh = priv; | |
1020 | struct em28xx *dev = fh->dev; | |
1021 | ||
1022 | f->fmt.pix.width = dev->width; | |
1023 | f->fmt.pix.height = dev->height; | |
1024 | f->fmt.pix.pixelformat = dev->format->fourcc; | |
1025 | f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; | |
1026 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; | |
1027 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
1028 | ||
1029 | /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ | |
1030 | if (dev->progressive) | |
1031 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
1032 | else | |
1033 | f->fmt.pix.field = dev->interlaced ? | |
1034 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; | |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) | |
1039 | { | |
1040 | unsigned int i; | |
1041 | ||
1042 | for (i = 0; i < ARRAY_SIZE(format); i++) | |
1043 | if (format[i].fourcc == fourcc) | |
1044 | return &format[i]; | |
1045 | ||
1046 | return NULL; | |
1047 | } | |
1048 | ||
1049 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
1050 | struct v4l2_format *f) | |
1051 | { | |
1052 | struct em28xx_fh *fh = priv; | |
1053 | struct em28xx *dev = fh->dev; | |
1054 | unsigned int width = f->fmt.pix.width; | |
1055 | unsigned int height = f->fmt.pix.height; | |
1056 | unsigned int maxw = norm_maxw(dev); | |
1057 | unsigned int maxh = norm_maxh(dev); | |
1058 | unsigned int hscale, vscale; | |
1059 | struct em28xx_fmt *fmt; | |
1060 | ||
1061 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); | |
1062 | if (!fmt) { | |
1063 | em28xx_videodbg("Fourcc format (%08x) invalid.\n", | |
1064 | f->fmt.pix.pixelformat); | |
1065 | return -EINVAL; | |
1066 | } | |
1067 | ||
1068 | if (dev->board.is_em2800) { | |
1069 | /* the em2800 can only scale down to 50% */ | |
1070 | height = height > (3 * maxh / 4) ? maxh : maxh / 2; | |
1071 | width = width > (3 * maxw / 4) ? maxw : maxw / 2; | |
1072 | } else { | |
1073 | /* width must even because of the YUYV format | |
1074 | height must be even because of interlacing */ | |
1075 | v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, | |
1076 | 1, 0); | |
1077 | } | |
1078 | ||
1079 | get_scale(dev, width, height, &hscale, &vscale); | |
1080 | ||
1081 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); | |
1082 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
1083 | ||
1084 | f->fmt.pix.width = width; | |
1085 | f->fmt.pix.height = height; | |
1086 | f->fmt.pix.pixelformat = fmt->fourcc; | |
1087 | f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3; | |
1088 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; | |
1089 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
1090 | if (dev->progressive) | |
1091 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
1092 | else | |
1093 | f->fmt.pix.field = dev->interlaced ? | |
1094 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, | |
1100 | unsigned width, unsigned height) | |
1101 | { | |
1102 | struct em28xx_fmt *fmt; | |
1103 | ||
1104 | fmt = format_by_fourcc(fourcc); | |
1105 | if (!fmt) | |
1106 | return -EINVAL; | |
1107 | ||
1108 | dev->format = fmt; | |
1109 | dev->width = width; | |
1110 | dev->height = height; | |
1111 | ||
1112 | /* set new image size */ | |
1113 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
1114 | ||
1115 | em28xx_set_alternate(dev); | |
1116 | em28xx_resolution_set(dev); | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
1122 | struct v4l2_format *f) | |
1123 | { | |
1124 | struct em28xx_fh *fh = priv; | |
1125 | struct em28xx *dev = fh->dev; | |
1126 | int rc; | |
1127 | ||
1128 | rc = check_dev(dev); | |
1129 | if (rc < 0) | |
1130 | return rc; | |
1131 | ||
1132 | vidioc_try_fmt_vid_cap(file, priv, f); | |
1133 | ||
1134 | if (videobuf_queue_is_busy(&fh->vb_vidq)) { | |
1135 | em28xx_errdev("%s queue busy\n", __func__); | |
1136 | return -EBUSY; | |
1137 | } | |
1138 | ||
1139 | return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, | |
1140 | f->fmt.pix.width, f->fmt.pix.height); | |
1141 | } | |
1142 | ||
1143 | static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) | |
1144 | { | |
1145 | struct em28xx_fh *fh = priv; | |
1146 | struct em28xx *dev = fh->dev; | |
1147 | int rc; | |
1148 | ||
1149 | rc = check_dev(dev); | |
1150 | if (rc < 0) | |
1151 | return rc; | |
1152 | ||
1153 | *norm = dev->norm; | |
1154 | ||
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) | |
1159 | { | |
1160 | struct em28xx_fh *fh = priv; | |
1161 | struct em28xx *dev = fh->dev; | |
1162 | struct v4l2_format f; | |
1163 | int rc; | |
1164 | ||
1165 | rc = check_dev(dev); | |
1166 | if (rc < 0) | |
1167 | return rc; | |
1168 | ||
1169 | dev->norm = *norm; | |
1170 | ||
1171 | /* Adjusts width/height, if needed */ | |
1172 | f.fmt.pix.width = dev->width; | |
1173 | f.fmt.pix.height = dev->height; | |
1174 | vidioc_try_fmt_vid_cap(file, priv, &f); | |
1175 | ||
1176 | /* set new image size */ | |
1177 | dev->width = f.fmt.pix.width; | |
1178 | dev->height = f.fmt.pix.height; | |
1179 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
1180 | ||
1181 | em28xx_resolution_set(dev); | |
1182 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); | |
1183 | ||
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | static int vidioc_g_parm(struct file *file, void *priv, | |
1188 | struct v4l2_streamparm *p) | |
1189 | { | |
1190 | struct em28xx_fh *fh = priv; | |
1191 | struct em28xx *dev = fh->dev; | |
1192 | int rc = 0; | |
1193 | ||
1194 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1195 | return -EINVAL; | |
1196 | ||
1197 | if (dev->board.is_webcam) | |
1198 | rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, | |
1199 | video, g_parm, p); | |
1200 | else | |
1201 | v4l2_video_std_frame_period(dev->norm, | |
1202 | &p->parm.capture.timeperframe); | |
1203 | ||
1204 | return rc; | |
1205 | } | |
1206 | ||
1207 | static int vidioc_s_parm(struct file *file, void *priv, | |
1208 | struct v4l2_streamparm *p) | |
1209 | { | |
1210 | struct em28xx_fh *fh = priv; | |
1211 | struct em28xx *dev = fh->dev; | |
1212 | ||
1213 | if (!dev->board.is_webcam) | |
1214 | return -EINVAL; | |
1215 | ||
1216 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1217 | return -EINVAL; | |
1218 | ||
1219 | return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); | |
1220 | } | |
1221 | ||
1222 | static const char *iname[] = { | |
1223 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
1224 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
1225 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
1226 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
1227 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
1228 | [EM28XX_VMUX_TELEVISION] = "Television", | |
1229 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
1230 | [EM28XX_VMUX_DVB] = "DVB", | |
1231 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
1232 | }; | |
1233 | ||
1234 | static int vidioc_enum_input(struct file *file, void *priv, | |
1235 | struct v4l2_input *i) | |
1236 | { | |
1237 | struct em28xx_fh *fh = priv; | |
1238 | struct em28xx *dev = fh->dev; | |
1239 | unsigned int n; | |
1240 | ||
1241 | n = i->index; | |
1242 | if (n >= MAX_EM28XX_INPUT) | |
1243 | return -EINVAL; | |
1244 | if (0 == INPUT(n)->type) | |
1245 | return -EINVAL; | |
1246 | ||
1247 | i->index = n; | |
1248 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
1249 | ||
1250 | strcpy(i->name, iname[INPUT(n)->type]); | |
1251 | ||
1252 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || | |
1253 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
1254 | i->type = V4L2_INPUT_TYPE_TUNER; | |
1255 | ||
1256 | i->std = dev->vdev->tvnorms; | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
1262 | { | |
1263 | struct em28xx_fh *fh = priv; | |
1264 | struct em28xx *dev = fh->dev; | |
1265 | ||
1266 | *i = dev->ctl_input; | |
1267 | ||
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
1272 | { | |
1273 | struct em28xx_fh *fh = priv; | |
1274 | struct em28xx *dev = fh->dev; | |
1275 | int rc; | |
1276 | ||
1277 | rc = check_dev(dev); | |
1278 | if (rc < 0) | |
1279 | return rc; | |
1280 | ||
1281 | if (i >= MAX_EM28XX_INPUT) | |
1282 | return -EINVAL; | |
1283 | if (0 == INPUT(i)->type) | |
1284 | return -EINVAL; | |
1285 | ||
1286 | dev->ctl_input = i; | |
1287 | ||
1288 | video_mux(dev, dev->ctl_input); | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
1293 | { | |
1294 | struct em28xx_fh *fh = priv; | |
1295 | struct em28xx *dev = fh->dev; | |
1296 | ||
1297 | if (!dev->audio_mode.has_audio) | |
1298 | return -EINVAL; | |
1299 | ||
1300 | switch (a->index) { | |
1301 | case EM28XX_AMUX_VIDEO: | |
1302 | strcpy(a->name, "Television"); | |
1303 | break; | |
1304 | case EM28XX_AMUX_LINE_IN: | |
1305 | strcpy(a->name, "Line In"); | |
1306 | break; | |
1307 | case EM28XX_AMUX_VIDEO2: | |
1308 | strcpy(a->name, "Television alt"); | |
1309 | break; | |
1310 | case EM28XX_AMUX_PHONE: | |
1311 | strcpy(a->name, "Phone"); | |
1312 | break; | |
1313 | case EM28XX_AMUX_MIC: | |
1314 | strcpy(a->name, "Mic"); | |
1315 | break; | |
1316 | case EM28XX_AMUX_CD: | |
1317 | strcpy(a->name, "CD"); | |
1318 | break; | |
1319 | case EM28XX_AMUX_AUX: | |
1320 | strcpy(a->name, "Aux"); | |
1321 | break; | |
1322 | case EM28XX_AMUX_PCM_OUT: | |
1323 | strcpy(a->name, "PCM"); | |
1324 | break; | |
1325 | default: | |
1326 | return -EINVAL; | |
1327 | } | |
1328 | ||
1329 | a->index = dev->ctl_ainput; | |
1330 | a->capability = V4L2_AUDCAP_STEREO; | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
1336 | { | |
1337 | struct em28xx_fh *fh = priv; | |
1338 | struct em28xx *dev = fh->dev; | |
1339 | ||
1340 | ||
1341 | if (!dev->audio_mode.has_audio) | |
1342 | return -EINVAL; | |
1343 | ||
1344 | if (a->index >= MAX_EM28XX_INPUT) | |
1345 | return -EINVAL; | |
1346 | if (0 == INPUT(a->index)->type) | |
1347 | return -EINVAL; | |
1348 | ||
1349 | dev->ctl_ainput = INPUT(a->index)->amux; | |
1350 | dev->ctl_aoutput = INPUT(a->index)->aout; | |
1351 | ||
1352 | if (!dev->ctl_aoutput) | |
1353 | dev->ctl_aoutput = EM28XX_AOUT_MASTER; | |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | static int vidioc_queryctrl(struct file *file, void *priv, | |
1359 | struct v4l2_queryctrl *qc) | |
1360 | { | |
1361 | struct em28xx_fh *fh = priv; | |
1362 | struct em28xx *dev = fh->dev; | |
1363 | int id = qc->id; | |
1364 | int rc; | |
1365 | ||
1366 | rc = check_dev(dev); | |
1367 | if (rc < 0) | |
1368 | return rc; | |
1369 | ||
1370 | memset(qc, 0, sizeof(*qc)); | |
1371 | ||
1372 | qc->id = id; | |
1373 | ||
1374 | /* enumerate AC97 controls */ | |
1375 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { | |
1376 | rc = ac97_queryctrl(qc); | |
1377 | if (!rc) | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | /* enumerate V4L2 device controls */ | |
1382 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc); | |
1383 | ||
1384 | if (qc->type) | |
1385 | return 0; | |
1386 | else | |
1387 | return -EINVAL; | |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * FIXME: This is an indirect way to check if a control exists at a | |
1392 | * subdev. Instead of that hack, maybe the better would be to change all | |
1393 | * subdevs to return -ENOIOCTLCMD, if an ioctl is not supported. | |
1394 | */ | |
1395 | static int check_subdev_ctrl(struct em28xx *dev, int id) | |
1396 | { | |
1397 | struct v4l2_queryctrl qc; | |
1398 | ||
1399 | memset(&qc, 0, sizeof(qc)); | |
1400 | qc.id = id; | |
1401 | ||
1402 | /* enumerate V4L2 device controls */ | |
1403 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, &qc); | |
1404 | ||
1405 | if (qc.type) | |
1406 | return 0; | |
1407 | else | |
1408 | return -EINVAL; | |
1409 | } | |
1410 | ||
1411 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
1412 | struct v4l2_control *ctrl) | |
1413 | { | |
1414 | struct em28xx_fh *fh = priv; | |
1415 | struct em28xx *dev = fh->dev; | |
1416 | int rc; | |
1417 | ||
1418 | rc = check_dev(dev); | |
1419 | if (rc < 0) | |
1420 | return rc; | |
1421 | rc = 0; | |
1422 | ||
1423 | /* Set an AC97 control */ | |
1424 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) | |
1425 | rc = ac97_get_ctrl(dev, ctrl); | |
1426 | else | |
1427 | rc = 1; | |
1428 | ||
1429 | /* It were not an AC97 control. Sends it to the v4l2 dev interface */ | |
1430 | if (rc == 1) { | |
1431 | if (check_subdev_ctrl(dev, ctrl->id)) | |
1432 | return -EINVAL; | |
1433 | ||
1434 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl); | |
1435 | rc = 0; | |
1436 | } | |
1437 | ||
1438 | return rc; | |
1439 | } | |
1440 | ||
1441 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
1442 | struct v4l2_control *ctrl) | |
1443 | { | |
1444 | struct em28xx_fh *fh = priv; | |
1445 | struct em28xx *dev = fh->dev; | |
1446 | int rc; | |
1447 | ||
1448 | rc = check_dev(dev); | |
1449 | if (rc < 0) | |
1450 | return rc; | |
1451 | ||
1452 | /* Set an AC97 control */ | |
1453 | if (dev->audio_mode.ac97 != EM28XX_NO_AC97) | |
1454 | rc = ac97_set_ctrl(dev, ctrl); | |
1455 | else | |
1456 | rc = 1; | |
1457 | ||
1458 | /* It isn't an AC97 control. Sends it to the v4l2 dev interface */ | |
1459 | if (rc == 1) { | |
1460 | rc = check_subdev_ctrl(dev, ctrl->id); | |
1461 | if (!rc) | |
1462 | v4l2_device_call_all(&dev->v4l2_dev, 0, | |
1463 | core, s_ctrl, ctrl); | |
1464 | /* | |
1465 | * In the case of non-AC97 volume controls, we still need | |
1466 | * to do some setups at em28xx, in order to mute/unmute | |
1467 | * and to adjust audio volume. However, the value ranges | |
1468 | * should be checked by the corresponding V4L subdriver. | |
1469 | */ | |
1470 | switch (ctrl->id) { | |
1471 | case V4L2_CID_AUDIO_MUTE: | |
1472 | dev->mute = ctrl->value; | |
1473 | rc = em28xx_audio_analog_set(dev); | |
1474 | break; | |
1475 | case V4L2_CID_AUDIO_VOLUME: | |
1476 | dev->volume = ctrl->value; | |
1477 | rc = em28xx_audio_analog_set(dev); | |
1478 | } | |
1479 | } | |
1480 | return (rc < 0) ? rc : 0; | |
1481 | } | |
1482 | ||
1483 | static int vidioc_g_tuner(struct file *file, void *priv, | |
1484 | struct v4l2_tuner *t) | |
1485 | { | |
1486 | struct em28xx_fh *fh = priv; | |
1487 | struct em28xx *dev = fh->dev; | |
1488 | int rc; | |
1489 | ||
1490 | rc = check_dev(dev); | |
1491 | if (rc < 0) | |
1492 | return rc; | |
1493 | ||
1494 | if (0 != t->index) | |
1495 | return -EINVAL; | |
1496 | ||
1497 | strcpy(t->name, "Tuner"); | |
1498 | t->type = V4L2_TUNER_ANALOG_TV; | |
1499 | ||
1500 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); | |
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | static int vidioc_s_tuner(struct file *file, void *priv, | |
1505 | struct v4l2_tuner *t) | |
1506 | { | |
1507 | struct em28xx_fh *fh = priv; | |
1508 | struct em28xx *dev = fh->dev; | |
1509 | int rc; | |
1510 | ||
1511 | rc = check_dev(dev); | |
1512 | if (rc < 0) | |
1513 | return rc; | |
1514 | ||
1515 | if (0 != t->index) | |
1516 | return -EINVAL; | |
1517 | ||
1518 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); | |
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | static int vidioc_g_frequency(struct file *file, void *priv, | |
1523 | struct v4l2_frequency *f) | |
1524 | { | |
1525 | struct em28xx_fh *fh = priv; | |
1526 | struct em28xx *dev = fh->dev; | |
1527 | ||
1528 | f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; | |
1529 | f->frequency = dev->ctl_freq; | |
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | static int vidioc_s_frequency(struct file *file, void *priv, | |
1534 | struct v4l2_frequency *f) | |
1535 | { | |
1536 | struct em28xx_fh *fh = priv; | |
1537 | struct em28xx *dev = fh->dev; | |
1538 | int rc; | |
1539 | ||
1540 | rc = check_dev(dev); | |
1541 | if (rc < 0) | |
1542 | return rc; | |
1543 | ||
1544 | if (0 != f->tuner) | |
1545 | return -EINVAL; | |
1546 | ||
1547 | if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV)) | |
1548 | return -EINVAL; | |
1549 | if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO)) | |
1550 | return -EINVAL; | |
1551 | ||
1552 | dev->ctl_freq = f->frequency; | |
1553 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f); | |
1554 | ||
1555 | return 0; | |
1556 | } | |
1557 | ||
1558 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1559 | static int em28xx_reg_len(int reg) | |
1560 | { | |
1561 | switch (reg) { | |
1562 | case EM28XX_R40_AC97LSB: | |
1563 | case EM28XX_R30_HSCALELOW: | |
1564 | case EM28XX_R32_VSCALELOW: | |
1565 | return 2; | |
1566 | default: | |
1567 | return 1; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | static int vidioc_g_chip_ident(struct file *file, void *priv, | |
1572 | struct v4l2_dbg_chip_ident *chip) | |
1573 | { | |
1574 | struct em28xx_fh *fh = priv; | |
1575 | struct em28xx *dev = fh->dev; | |
1576 | ||
1577 | chip->ident = V4L2_IDENT_NONE; | |
1578 | chip->revision = 0; | |
1579 | ||
1580 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip); | |
1581 | ||
1582 | return 0; | |
1583 | } | |
1584 | ||
1585 | ||
1586 | static int vidioc_g_register(struct file *file, void *priv, | |
1587 | struct v4l2_dbg_register *reg) | |
1588 | { | |
1589 | struct em28xx_fh *fh = priv; | |
1590 | struct em28xx *dev = fh->dev; | |
1591 | int ret; | |
1592 | ||
1593 | switch (reg->match.type) { | |
1594 | case V4L2_CHIP_MATCH_AC97: | |
1595 | ret = em28xx_read_ac97(dev, reg->reg); | |
1596 | if (ret < 0) | |
1597 | return ret; | |
1598 | ||
1599 | reg->val = ret; | |
1600 | reg->size = 1; | |
1601 | return 0; | |
1602 | case V4L2_CHIP_MATCH_I2C_DRIVER: | |
1603 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg); | |
1604 | return 0; | |
1605 | case V4L2_CHIP_MATCH_I2C_ADDR: | |
1606 | /* TODO: is this correct? */ | |
1607 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg); | |
1608 | return 0; | |
1609 | default: | |
1610 | if (!v4l2_chip_match_host(®->match)) | |
1611 | return -EINVAL; | |
1612 | } | |
1613 | ||
1614 | /* Match host */ | |
1615 | reg->size = em28xx_reg_len(reg->reg); | |
1616 | if (reg->size == 1) { | |
1617 | ret = em28xx_read_reg(dev, reg->reg); | |
1618 | ||
1619 | if (ret < 0) | |
1620 | return ret; | |
1621 | ||
1622 | reg->val = ret; | |
1623 | } else { | |
1624 | __le16 val = 0; | |
1625 | ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, | |
1626 | reg->reg, (char *)&val, 2); | |
1627 | if (ret < 0) | |
1628 | return ret; | |
1629 | ||
1630 | reg->val = le16_to_cpu(val); | |
1631 | } | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | static int vidioc_s_register(struct file *file, void *priv, | |
1637 | struct v4l2_dbg_register *reg) | |
1638 | { | |
1639 | struct em28xx_fh *fh = priv; | |
1640 | struct em28xx *dev = fh->dev; | |
1641 | __le16 buf; | |
1642 | ||
1643 | switch (reg->match.type) { | |
1644 | case V4L2_CHIP_MATCH_AC97: | |
1645 | return em28xx_write_ac97(dev, reg->reg, reg->val); | |
1646 | case V4L2_CHIP_MATCH_I2C_DRIVER: | |
1647 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg); | |
1648 | return 0; | |
1649 | case V4L2_CHIP_MATCH_I2C_ADDR: | |
1650 | /* TODO: is this correct? */ | |
1651 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg); | |
1652 | return 0; | |
1653 | default: | |
1654 | if (!v4l2_chip_match_host(®->match)) | |
1655 | return -EINVAL; | |
1656 | } | |
1657 | ||
1658 | /* Match host */ | |
1659 | buf = cpu_to_le16(reg->val); | |
1660 | ||
1661 | return em28xx_write_regs(dev, reg->reg, (char *)&buf, | |
1662 | em28xx_reg_len(reg->reg)); | |
1663 | } | |
1664 | #endif | |
1665 | ||
1666 | ||
1667 | static int vidioc_cropcap(struct file *file, void *priv, | |
1668 | struct v4l2_cropcap *cc) | |
1669 | { | |
1670 | struct em28xx_fh *fh = priv; | |
1671 | struct em28xx *dev = fh->dev; | |
1672 | ||
1673 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1674 | return -EINVAL; | |
1675 | ||
1676 | cc->bounds.left = 0; | |
1677 | cc->bounds.top = 0; | |
1678 | cc->bounds.width = dev->width; | |
1679 | cc->bounds.height = dev->height; | |
1680 | cc->defrect = cc->bounds; | |
1681 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
1682 | cc->pixelaspect.denominator = 59; | |
1683 | ||
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | static int vidioc_streamon(struct file *file, void *priv, | |
1688 | enum v4l2_buf_type type) | |
1689 | { | |
1690 | struct em28xx_fh *fh = priv; | |
1691 | struct em28xx *dev = fh->dev; | |
1692 | int rc = -EINVAL; | |
1693 | ||
1694 | rc = check_dev(dev); | |
1695 | if (rc < 0) | |
1696 | return rc; | |
1697 | ||
1698 | if (unlikely(type != fh->type)) | |
1699 | return -EINVAL; | |
1700 | ||
1701 | em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n", | |
1702 | fh, type, fh->resources, dev->resources); | |
1703 | ||
1704 | if (unlikely(!res_get(fh, get_ressource(fh)))) | |
1705 | return -EBUSY; | |
1706 | ||
1707 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1708 | rc = videobuf_streamon(&fh->vb_vidq); | |
1709 | else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
1710 | rc = videobuf_streamon(&fh->vb_vbiq); | |
1711 | ||
1712 | return rc; | |
1713 | } | |
1714 | ||
1715 | static int vidioc_streamoff(struct file *file, void *priv, | |
1716 | enum v4l2_buf_type type) | |
1717 | { | |
1718 | struct em28xx_fh *fh = priv; | |
1719 | struct em28xx *dev = fh->dev; | |
1720 | int rc; | |
1721 | ||
1722 | rc = check_dev(dev); | |
1723 | if (rc < 0) | |
1724 | return rc; | |
1725 | ||
1726 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && | |
1727 | fh->type != V4L2_BUF_TYPE_VBI_CAPTURE) | |
1728 | return -EINVAL; | |
1729 | if (type != fh->type) | |
1730 | return -EINVAL; | |
1731 | ||
1732 | em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n", | |
1733 | fh, type, fh->resources, dev->resources); | |
1734 | ||
1735 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
1736 | if (res_check(fh, EM28XX_RESOURCE_VIDEO)) { | |
1737 | videobuf_streamoff(&fh->vb_vidq); | |
1738 | res_free(fh, EM28XX_RESOURCE_VIDEO); | |
1739 | } | |
1740 | } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
1741 | if (res_check(fh, EM28XX_RESOURCE_VBI)) { | |
1742 | videobuf_streamoff(&fh->vb_vbiq); | |
1743 | res_free(fh, EM28XX_RESOURCE_VBI); | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | return 0; | |
1748 | } | |
1749 | ||
1750 | static int vidioc_querycap(struct file *file, void *priv, | |
1751 | struct v4l2_capability *cap) | |
1752 | { | |
1753 | struct em28xx_fh *fh = priv; | |
1754 | struct em28xx *dev = fh->dev; | |
1755 | ||
1756 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
1757 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
1758 | usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); | |
1759 | ||
1760 | cap->version = EM28XX_VERSION_CODE; | |
1761 | ||
1762 | cap->capabilities = | |
1763 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
1764 | V4L2_CAP_VIDEO_CAPTURE | | |
1765 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
1766 | ||
1767 | if (dev->vbi_dev) | |
1768 | cap->capabilities |= V4L2_CAP_VBI_CAPTURE; | |
1769 | ||
1770 | if (dev->audio_mode.has_audio) | |
1771 | cap->capabilities |= V4L2_CAP_AUDIO; | |
1772 | ||
1773 | if (dev->tuner_type != TUNER_ABSENT) | |
1774 | cap->capabilities |= V4L2_CAP_TUNER; | |
1775 | ||
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
1780 | struct v4l2_fmtdesc *f) | |
1781 | { | |
1782 | if (unlikely(f->index >= ARRAY_SIZE(format))) | |
1783 | return -EINVAL; | |
1784 | ||
1785 | strlcpy(f->description, format[f->index].name, sizeof(f->description)); | |
1786 | f->pixelformat = format[f->index].fourcc; | |
1787 | ||
1788 | return 0; | |
1789 | } | |
1790 | ||
1791 | /* Sliced VBI ioctls */ | |
1792 | static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv, | |
1793 | struct v4l2_format *f) | |
1794 | { | |
1795 | struct em28xx_fh *fh = priv; | |
1796 | struct em28xx *dev = fh->dev; | |
1797 | int rc; | |
1798 | ||
1799 | rc = check_dev(dev); | |
1800 | if (rc < 0) | |
1801 | return rc; | |
1802 | ||
1803 | f->fmt.sliced.service_set = 0; | |
1804 | v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced); | |
1805 | ||
1806 | if (f->fmt.sliced.service_set == 0) | |
1807 | rc = -EINVAL; | |
1808 | ||
1809 | return rc; | |
1810 | } | |
1811 | ||
1812 | static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv, | |
1813 | struct v4l2_format *f) | |
1814 | { | |
1815 | struct em28xx_fh *fh = priv; | |
1816 | struct em28xx *dev = fh->dev; | |
1817 | int rc; | |
1818 | ||
1819 | rc = check_dev(dev); | |
1820 | if (rc < 0) | |
1821 | return rc; | |
1822 | ||
1823 | v4l2_device_call_all(&dev->v4l2_dev, 0, vbi, g_sliced_fmt, &f->fmt.sliced); | |
1824 | ||
1825 | if (f->fmt.sliced.service_set == 0) | |
1826 | return -EINVAL; | |
1827 | ||
1828 | return 0; | |
1829 | } | |
1830 | ||
1831 | /* RAW VBI ioctls */ | |
1832 | ||
1833 | static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, | |
1834 | struct v4l2_format *format) | |
1835 | { | |
1836 | struct em28xx_fh *fh = priv; | |
1837 | struct em28xx *dev = fh->dev; | |
1838 | ||
1839 | format->fmt.vbi.samples_per_line = dev->vbi_width; | |
1840 | format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; | |
1841 | format->fmt.vbi.offset = 0; | |
1842 | format->fmt.vbi.flags = 0; | |
1843 | format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; | |
1844 | format->fmt.vbi.count[0] = dev->vbi_height; | |
1845 | format->fmt.vbi.count[1] = dev->vbi_height; | |
1846 | ||
1847 | /* Varies by video standard (NTSC, PAL, etc.) */ | |
1848 | if (dev->norm & V4L2_STD_525_60) { | |
1849 | /* NTSC */ | |
1850 | format->fmt.vbi.start[0] = 10; | |
1851 | format->fmt.vbi.start[1] = 273; | |
1852 | } else if (dev->norm & V4L2_STD_625_50) { | |
1853 | /* PAL */ | |
1854 | format->fmt.vbi.start[0] = 6; | |
1855 | format->fmt.vbi.start[1] = 318; | |
1856 | } | |
1857 | ||
1858 | return 0; | |
1859 | } | |
1860 | ||
1861 | static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, | |
1862 | struct v4l2_format *format) | |
1863 | { | |
1864 | struct em28xx_fh *fh = priv; | |
1865 | struct em28xx *dev = fh->dev; | |
1866 | ||
1867 | format->fmt.vbi.samples_per_line = dev->vbi_width; | |
1868 | format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; | |
1869 | format->fmt.vbi.offset = 0; | |
1870 | format->fmt.vbi.flags = 0; | |
1871 | format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; | |
1872 | format->fmt.vbi.count[0] = dev->vbi_height; | |
1873 | format->fmt.vbi.count[1] = dev->vbi_height; | |
1874 | ||
1875 | /* Varies by video standard (NTSC, PAL, etc.) */ | |
1876 | if (dev->norm & V4L2_STD_525_60) { | |
1877 | /* NTSC */ | |
1878 | format->fmt.vbi.start[0] = 10; | |
1879 | format->fmt.vbi.start[1] = 273; | |
1880 | } else if (dev->norm & V4L2_STD_625_50) { | |
1881 | /* PAL */ | |
1882 | format->fmt.vbi.start[0] = 6; | |
1883 | format->fmt.vbi.start[1] = 318; | |
1884 | } | |
1885 | ||
1886 | return 0; | |
1887 | } | |
1888 | ||
1889 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1890 | struct v4l2_requestbuffers *rb) | |
1891 | { | |
1892 | struct em28xx_fh *fh = priv; | |
1893 | struct em28xx *dev = fh->dev; | |
1894 | int rc; | |
1895 | ||
1896 | rc = check_dev(dev); | |
1897 | if (rc < 0) | |
1898 | return rc; | |
1899 | ||
1900 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1901 | return videobuf_reqbufs(&fh->vb_vidq, rb); | |
1902 | else | |
1903 | return videobuf_reqbufs(&fh->vb_vbiq, rb); | |
1904 | } | |
1905 | ||
1906 | static int vidioc_querybuf(struct file *file, void *priv, | |
1907 | struct v4l2_buffer *b) | |
1908 | { | |
1909 | struct em28xx_fh *fh = priv; | |
1910 | struct em28xx *dev = fh->dev; | |
1911 | int rc; | |
1912 | ||
1913 | rc = check_dev(dev); | |
1914 | if (rc < 0) | |
1915 | return rc; | |
1916 | ||
1917 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1918 | return videobuf_querybuf(&fh->vb_vidq, b); | |
1919 | else { | |
1920 | /* FIXME: I'm not sure yet whether this is a bug in zvbi or | |
1921 | the videobuf framework, but we probably shouldn't be | |
1922 | returning a buffer larger than that which was asked for. | |
1923 | At a minimum, it causes a crash in zvbi since it does | |
1924 | a memcpy based on the source buffer length */ | |
1925 | int result = videobuf_querybuf(&fh->vb_vbiq, b); | |
1926 | b->length = dev->vbi_width * dev->vbi_height * 2; | |
1927 | ||
1928 | return result; | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
1933 | { | |
1934 | struct em28xx_fh *fh = priv; | |
1935 | struct em28xx *dev = fh->dev; | |
1936 | int rc; | |
1937 | ||
1938 | rc = check_dev(dev); | |
1939 | if (rc < 0) | |
1940 | return rc; | |
1941 | ||
1942 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1943 | return videobuf_qbuf(&fh->vb_vidq, b); | |
1944 | else | |
1945 | return videobuf_qbuf(&fh->vb_vbiq, b); | |
1946 | } | |
1947 | ||
1948 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
1949 | { | |
1950 | struct em28xx_fh *fh = priv; | |
1951 | struct em28xx *dev = fh->dev; | |
1952 | int rc; | |
1953 | ||
1954 | rc = check_dev(dev); | |
1955 | if (rc < 0) | |
1956 | return rc; | |
1957 | ||
1958 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1959 | return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & | |
1960 | O_NONBLOCK); | |
1961 | else | |
1962 | return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags & | |
1963 | O_NONBLOCK); | |
1964 | } | |
1965 | ||
1966 | /* ----------------------------------------------------------- */ | |
1967 | /* RADIO ESPECIFIC IOCTLS */ | |
1968 | /* ----------------------------------------------------------- */ | |
1969 | ||
1970 | static int radio_querycap(struct file *file, void *priv, | |
1971 | struct v4l2_capability *cap) | |
1972 | { | |
1973 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
1974 | ||
1975 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
1976 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
1977 | usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); | |
1978 | ||
1979 | cap->version = EM28XX_VERSION_CODE; | |
1980 | cap->capabilities = V4L2_CAP_TUNER; | |
1981 | return 0; | |
1982 | } | |
1983 | ||
1984 | static int radio_g_tuner(struct file *file, void *priv, | |
1985 | struct v4l2_tuner *t) | |
1986 | { | |
1987 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
1988 | ||
1989 | if (unlikely(t->index > 0)) | |
1990 | return -EINVAL; | |
1991 | ||
1992 | strcpy(t->name, "Radio"); | |
1993 | t->type = V4L2_TUNER_RADIO; | |
1994 | ||
1995 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t); | |
1996 | ||
1997 | return 0; | |
1998 | } | |
1999 | ||
2000 | static int radio_enum_input(struct file *file, void *priv, | |
2001 | struct v4l2_input *i) | |
2002 | { | |
2003 | if (i->index != 0) | |
2004 | return -EINVAL; | |
2005 | strcpy(i->name, "Radio"); | |
2006 | i->type = V4L2_INPUT_TYPE_TUNER; | |
2007 | ||
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
2012 | { | |
2013 | if (unlikely(a->index)) | |
2014 | return -EINVAL; | |
2015 | ||
2016 | strcpy(a->name, "Radio"); | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | static int radio_s_tuner(struct file *file, void *priv, | |
2021 | struct v4l2_tuner *t) | |
2022 | { | |
2023 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
2024 | ||
2025 | if (0 != t->index) | |
2026 | return -EINVAL; | |
2027 | ||
2028 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t); | |
2029 | ||
2030 | return 0; | |
2031 | } | |
2032 | ||
2033 | static int radio_s_audio(struct file *file, void *fh, | |
2034 | struct v4l2_audio *a) | |
2035 | { | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | static int radio_s_input(struct file *file, void *fh, unsigned int i) | |
2040 | { | |
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | static int radio_queryctrl(struct file *file, void *priv, | |
2045 | struct v4l2_queryctrl *qc) | |
2046 | { | |
2047 | int i; | |
2048 | ||
2049 | if (qc->id < V4L2_CID_BASE || | |
2050 | qc->id >= V4L2_CID_LASTP1) | |
2051 | return -EINVAL; | |
2052 | ||
2053 | for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) { | |
2054 | if (qc->id && qc->id == ac97_qctrl[i].id) { | |
2055 | memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc)); | |
2056 | return 0; | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | return -EINVAL; | |
2061 | } | |
2062 | ||
2063 | /* | |
2064 | * em28xx_v4l2_open() | |
2065 | * inits the device and starts isoc transfer | |
2066 | */ | |
2067 | static int em28xx_v4l2_open(struct file *filp) | |
2068 | { | |
2069 | int errCode = 0, radio = 0; | |
2070 | struct video_device *vdev = video_devdata(filp); | |
2071 | struct em28xx *dev = video_drvdata(filp); | |
2072 | enum v4l2_buf_type fh_type = 0; | |
2073 | struct em28xx_fh *fh; | |
2074 | enum v4l2_field field; | |
2075 | ||
2076 | switch (vdev->vfl_type) { | |
2077 | case VFL_TYPE_GRABBER: | |
2078 | fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2079 | break; | |
2080 | case VFL_TYPE_VBI: | |
2081 | fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
2082 | break; | |
2083 | case VFL_TYPE_RADIO: | |
2084 | radio = 1; | |
2085 | break; | |
2086 | } | |
2087 | ||
2088 | em28xx_videodbg("open dev=%s type=%s users=%d\n", | |
2089 | video_device_node_name(vdev), v4l2_type_names[fh_type], | |
2090 | dev->users); | |
2091 | ||
2092 | ||
2093 | fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); | |
2094 | if (!fh) { | |
2095 | em28xx_errdev("em28xx-video.c: Out of memory?!\n"); | |
2096 | return -ENOMEM; | |
2097 | } | |
2098 | fh->dev = dev; | |
2099 | fh->radio = radio; | |
2100 | fh->type = fh_type; | |
2101 | filp->private_data = fh; | |
2102 | ||
2103 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { | |
2104 | em28xx_set_mode(dev, EM28XX_ANALOG_MODE); | |
2105 | em28xx_set_alternate(dev); | |
2106 | em28xx_resolution_set(dev); | |
2107 | ||
2108 | /* Needed, since GPIO might have disabled power of | |
2109 | some i2c device | |
2110 | */ | |
2111 | em28xx_wake_i2c(dev); | |
2112 | ||
2113 | } | |
2114 | if (fh->radio) { | |
2115 | em28xx_videodbg("video_open: setting radio device\n"); | |
2116 | v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio); | |
2117 | } | |
2118 | ||
2119 | dev->users++; | |
2120 | ||
2121 | if (dev->progressive) | |
2122 | field = V4L2_FIELD_NONE; | |
2123 | else | |
2124 | field = V4L2_FIELD_INTERLACED; | |
2125 | ||
2126 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops, | |
2127 | NULL, &dev->slock, | |
2128 | V4L2_BUF_TYPE_VIDEO_CAPTURE, field, | |
2129 | sizeof(struct em28xx_buffer), fh, &dev->lock); | |
2130 | ||
2131 | videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops, | |
2132 | NULL, &dev->slock, | |
2133 | V4L2_BUF_TYPE_VBI_CAPTURE, | |
2134 | V4L2_FIELD_SEQ_TB, | |
2135 | sizeof(struct em28xx_buffer), fh, &dev->lock); | |
2136 | ||
2137 | return errCode; | |
2138 | } | |
2139 | ||
2140 | /* | |
2141 | * em28xx_realease_resources() | |
2142 | * unregisters the v4l2,i2c and usb devices | |
2143 | * called when the device gets disconected or at module unload | |
2144 | */ | |
2145 | void em28xx_release_analog_resources(struct em28xx *dev) | |
2146 | { | |
2147 | ||
2148 | /*FIXME: I2C IR should be disconnected */ | |
2149 | ||
2150 | if (dev->radio_dev) { | |
2151 | if (video_is_registered(dev->radio_dev)) | |
2152 | video_unregister_device(dev->radio_dev); | |
2153 | else | |
2154 | video_device_release(dev->radio_dev); | |
2155 | dev->radio_dev = NULL; | |
2156 | } | |
2157 | if (dev->vbi_dev) { | |
2158 | em28xx_info("V4L2 device %s deregistered\n", | |
2159 | video_device_node_name(dev->vbi_dev)); | |
2160 | if (video_is_registered(dev->vbi_dev)) | |
2161 | video_unregister_device(dev->vbi_dev); | |
2162 | else | |
2163 | video_device_release(dev->vbi_dev); | |
2164 | dev->vbi_dev = NULL; | |
2165 | } | |
2166 | if (dev->vdev) { | |
2167 | em28xx_info("V4L2 device %s deregistered\n", | |
2168 | video_device_node_name(dev->vdev)); | |
2169 | if (video_is_registered(dev->vdev)) | |
2170 | video_unregister_device(dev->vdev); | |
2171 | else | |
2172 | video_device_release(dev->vdev); | |
2173 | dev->vdev = NULL; | |
2174 | } | |
2175 | } | |
2176 | ||
2177 | /* | |
2178 | * em28xx_v4l2_close() | |
2179 | * stops streaming and deallocates all resources allocated by the v4l2 | |
2180 | * calls and ioctls | |
2181 | */ | |
2182 | static int em28xx_v4l2_close(struct file *filp) | |
2183 | { | |
2184 | struct em28xx_fh *fh = filp->private_data; | |
2185 | struct em28xx *dev = fh->dev; | |
2186 | int errCode; | |
2187 | ||
2188 | em28xx_videodbg("users=%d\n", dev->users); | |
2189 | ||
2190 | if (res_check(fh, EM28XX_RESOURCE_VIDEO)) { | |
2191 | videobuf_stop(&fh->vb_vidq); | |
2192 | res_free(fh, EM28XX_RESOURCE_VIDEO); | |
2193 | } | |
2194 | ||
2195 | if (res_check(fh, EM28XX_RESOURCE_VBI)) { | |
2196 | videobuf_stop(&fh->vb_vbiq); | |
2197 | res_free(fh, EM28XX_RESOURCE_VBI); | |
2198 | } | |
2199 | ||
2200 | if (dev->users == 1) { | |
2201 | /* the device is already disconnect, | |
2202 | free the remaining resources */ | |
2203 | if (dev->state & DEV_DISCONNECTED) { | |
2204 | em28xx_release_resources(dev); | |
2205 | kfree(dev); | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | /* Save some power by putting tuner to sleep */ | |
2210 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0); | |
2211 | ||
2212 | /* do this before setting alternate! */ | |
2213 | em28xx_uninit_isoc(dev); | |
2214 | em28xx_set_mode(dev, EM28XX_SUSPEND); | |
2215 | ||
2216 | /* set alternate 0 */ | |
2217 | dev->alt = 0; | |
2218 | em28xx_videodbg("setting alternate 0\n"); | |
2219 | errCode = usb_set_interface(dev->udev, 0, 0); | |
2220 | if (errCode < 0) { | |
2221 | em28xx_errdev("cannot change alternate number to " | |
2222 | "0 (error=%i)\n", errCode); | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | videobuf_mmap_free(&fh->vb_vidq); | |
2227 | videobuf_mmap_free(&fh->vb_vbiq); | |
2228 | kfree(fh); | |
2229 | dev->users--; | |
2230 | wake_up_interruptible_nr(&dev->open, 1); | |
2231 | return 0; | |
2232 | } | |
2233 | ||
2234 | /* | |
2235 | * em28xx_v4l2_read() | |
2236 | * will allocate buffers when called for the first time | |
2237 | */ | |
2238 | static ssize_t | |
2239 | em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count, | |
2240 | loff_t *pos) | |
2241 | { | |
2242 | struct em28xx_fh *fh = filp->private_data; | |
2243 | struct em28xx *dev = fh->dev; | |
2244 | int rc; | |
2245 | ||
2246 | rc = check_dev(dev); | |
2247 | if (rc < 0) | |
2248 | return rc; | |
2249 | ||
2250 | /* FIXME: read() is not prepared to allow changing the video | |
2251 | resolution while streaming. Seems a bug at em28xx_set_fmt | |
2252 | */ | |
2253 | ||
2254 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
2255 | if (res_locked(dev, EM28XX_RESOURCE_VIDEO)) | |
2256 | return -EBUSY; | |
2257 | ||
2258 | return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, | |
2259 | filp->f_flags & O_NONBLOCK); | |
2260 | } | |
2261 | ||
2262 | ||
2263 | if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
2264 | if (!res_get(fh, EM28XX_RESOURCE_VBI)) | |
2265 | return -EBUSY; | |
2266 | ||
2267 | return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0, | |
2268 | filp->f_flags & O_NONBLOCK); | |
2269 | } | |
2270 | ||
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | /* | |
2275 | * em28xx_v4l2_poll() | |
2276 | * will allocate buffers when called for the first time | |
2277 | */ | |
2278 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait) | |
2279 | { | |
2280 | struct em28xx_fh *fh = filp->private_data; | |
2281 | struct em28xx *dev = fh->dev; | |
2282 | int rc; | |
2283 | ||
2284 | rc = check_dev(dev); | |
2285 | if (rc < 0) | |
2286 | return rc; | |
2287 | ||
2288 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { | |
2289 | if (!res_get(fh, EM28XX_RESOURCE_VIDEO)) | |
2290 | return POLLERR; | |
2291 | return videobuf_poll_stream(filp, &fh->vb_vidq, wait); | |
2292 | } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
2293 | if (!res_get(fh, EM28XX_RESOURCE_VBI)) | |
2294 | return POLLERR; | |
2295 | return videobuf_poll_stream(filp, &fh->vb_vbiq, wait); | |
2296 | } else { | |
2297 | return POLLERR; | |
2298 | } | |
2299 | } | |
2300 | ||
2301 | /* | |
2302 | * em28xx_v4l2_mmap() | |
2303 | */ | |
2304 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) | |
2305 | { | |
2306 | struct em28xx_fh *fh = filp->private_data; | |
2307 | struct em28xx *dev = fh->dev; | |
2308 | int rc; | |
2309 | ||
2310 | rc = check_dev(dev); | |
2311 | if (rc < 0) | |
2312 | return rc; | |
2313 | ||
2314 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2315 | rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); | |
2316 | else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) | |
2317 | rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma); | |
2318 | ||
2319 | em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", | |
2320 | (unsigned long)vma->vm_start, | |
2321 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, | |
2322 | rc); | |
2323 | ||
2324 | return rc; | |
2325 | } | |
2326 | ||
2327 | static const struct v4l2_file_operations em28xx_v4l_fops = { | |
2328 | .owner = THIS_MODULE, | |
2329 | .open = em28xx_v4l2_open, | |
2330 | .release = em28xx_v4l2_close, | |
2331 | .read = em28xx_v4l2_read, | |
2332 | .poll = em28xx_v4l2_poll, | |
2333 | .mmap = em28xx_v4l2_mmap, | |
2334 | .unlocked_ioctl = video_ioctl2, | |
2335 | }; | |
2336 | ||
2337 | static const struct v4l2_ioctl_ops video_ioctl_ops = { | |
2338 | .vidioc_querycap = vidioc_querycap, | |
2339 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
2340 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
2341 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
2342 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
2343 | .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, | |
2344 | .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap, | |
2345 | .vidioc_g_audio = vidioc_g_audio, | |
2346 | .vidioc_s_audio = vidioc_s_audio, | |
2347 | .vidioc_cropcap = vidioc_cropcap, | |
2348 | ||
2349 | .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap, | |
2350 | .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, | |
2351 | .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, | |
2352 | ||
2353 | .vidioc_reqbufs = vidioc_reqbufs, | |
2354 | .vidioc_querybuf = vidioc_querybuf, | |
2355 | .vidioc_qbuf = vidioc_qbuf, | |
2356 | .vidioc_dqbuf = vidioc_dqbuf, | |
2357 | .vidioc_g_std = vidioc_g_std, | |
2358 | .vidioc_s_std = vidioc_s_std, | |
2359 | .vidioc_g_parm = vidioc_g_parm, | |
2360 | .vidioc_s_parm = vidioc_s_parm, | |
2361 | .vidioc_enum_input = vidioc_enum_input, | |
2362 | .vidioc_g_input = vidioc_g_input, | |
2363 | .vidioc_s_input = vidioc_s_input, | |
2364 | .vidioc_queryctrl = vidioc_queryctrl, | |
2365 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
2366 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
2367 | .vidioc_streamon = vidioc_streamon, | |
2368 | .vidioc_streamoff = vidioc_streamoff, | |
2369 | .vidioc_g_tuner = vidioc_g_tuner, | |
2370 | .vidioc_s_tuner = vidioc_s_tuner, | |
2371 | .vidioc_g_frequency = vidioc_g_frequency, | |
2372 | .vidioc_s_frequency = vidioc_s_frequency, | |
2373 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
2374 | .vidioc_g_register = vidioc_g_register, | |
2375 | .vidioc_s_register = vidioc_s_register, | |
2376 | .vidioc_g_chip_ident = vidioc_g_chip_ident, | |
2377 | #endif | |
2378 | }; | |
2379 | ||
2380 | static const struct video_device em28xx_video_template = { | |
2381 | .fops = &em28xx_v4l_fops, | |
2382 | .release = video_device_release, | |
2383 | .ioctl_ops = &video_ioctl_ops, | |
2384 | ||
2385 | .tvnorms = V4L2_STD_ALL, | |
2386 | .current_norm = V4L2_STD_PAL, | |
2387 | }; | |
2388 | ||
2389 | static const struct v4l2_file_operations radio_fops = { | |
2390 | .owner = THIS_MODULE, | |
2391 | .open = em28xx_v4l2_open, | |
2392 | .release = em28xx_v4l2_close, | |
2393 | .unlocked_ioctl = video_ioctl2, | |
2394 | }; | |
2395 | ||
2396 | static const struct v4l2_ioctl_ops radio_ioctl_ops = { | |
2397 | .vidioc_querycap = radio_querycap, | |
2398 | .vidioc_g_tuner = radio_g_tuner, | |
2399 | .vidioc_enum_input = radio_enum_input, | |
2400 | .vidioc_g_audio = radio_g_audio, | |
2401 | .vidioc_s_tuner = radio_s_tuner, | |
2402 | .vidioc_s_audio = radio_s_audio, | |
2403 | .vidioc_s_input = radio_s_input, | |
2404 | .vidioc_queryctrl = radio_queryctrl, | |
2405 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
2406 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
2407 | .vidioc_g_frequency = vidioc_g_frequency, | |
2408 | .vidioc_s_frequency = vidioc_s_frequency, | |
2409 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
2410 | .vidioc_g_register = vidioc_g_register, | |
2411 | .vidioc_s_register = vidioc_s_register, | |
2412 | #endif | |
2413 | }; | |
2414 | ||
2415 | static struct video_device em28xx_radio_template = { | |
2416 | .name = "em28xx-radio", | |
2417 | .fops = &radio_fops, | |
2418 | .ioctl_ops = &radio_ioctl_ops, | |
2419 | }; | |
2420 | ||
2421 | /******************************** usb interface ******************************/ | |
2422 | ||
2423 | ||
2424 | ||
2425 | static struct video_device *em28xx_vdev_init(struct em28xx *dev, | |
2426 | const struct video_device *template, | |
2427 | const char *type_name) | |
2428 | { | |
2429 | struct video_device *vfd; | |
2430 | ||
2431 | vfd = video_device_alloc(); | |
2432 | if (NULL == vfd) | |
2433 | return NULL; | |
2434 | ||
2435 | *vfd = *template; | |
2436 | vfd->v4l2_dev = &dev->v4l2_dev; | |
2437 | vfd->release = video_device_release; | |
2438 | vfd->debug = video_debug; | |
2439 | vfd->lock = &dev->lock; | |
2440 | ||
2441 | snprintf(vfd->name, sizeof(vfd->name), "%s %s", | |
2442 | dev->name, type_name); | |
2443 | ||
2444 | video_set_drvdata(vfd, dev); | |
2445 | return vfd; | |
2446 | } | |
2447 | ||
2448 | int em28xx_register_analog_devices(struct em28xx *dev) | |
2449 | { | |
2450 | u8 val; | |
2451 | int ret; | |
2452 | ||
2453 | printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n", | |
2454 | dev->name, | |
2455 | (EM28XX_VERSION_CODE >> 16) & 0xff, | |
2456 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
2457 | ||
2458 | /* set default norm */ | |
2459 | dev->norm = em28xx_video_template.current_norm; | |
2460 | v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm); | |
2461 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; | |
2462 | dev->ctl_input = 0; | |
2463 | ||
2464 | /* Analog specific initialization */ | |
2465 | dev->format = &format[0]; | |
2466 | em28xx_set_video_format(dev, format[0].fourcc, | |
2467 | norm_maxw(dev), norm_maxh(dev)); | |
2468 | ||
2469 | video_mux(dev, dev->ctl_input); | |
2470 | ||
2471 | /* Audio defaults */ | |
2472 | dev->mute = 1; | |
2473 | dev->volume = 0x1f; | |
2474 | ||
2475 | /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ | |
2476 | val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); | |
2477 | em28xx_write_reg(dev, EM28XX_R0F_XCLK, | |
2478 | (EM28XX_XCLK_AUDIO_UNMUTE | val)); | |
2479 | ||
2480 | em28xx_set_outfmt(dev); | |
2481 | em28xx_colorlevels_set_default(dev); | |
2482 | em28xx_compression_disable(dev); | |
2483 | ||
2484 | /* allocate and fill video video_device struct */ | |
2485 | dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); | |
2486 | if (!dev->vdev) { | |
2487 | em28xx_errdev("cannot allocate video_device.\n"); | |
2488 | return -ENODEV; | |
2489 | } | |
2490 | ||
2491 | /* register v4l2 video video_device */ | |
2492 | ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER, | |
2493 | video_nr[dev->devno]); | |
2494 | if (ret) { | |
2495 | em28xx_errdev("unable to register video device (error=%i).\n", | |
2496 | ret); | |
2497 | return ret; | |
2498 | } | |
2499 | ||
2500 | /* Allocate and fill vbi video_device struct */ | |
2501 | if (em28xx_vbi_supported(dev) == 1) { | |
2502 | dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, | |
2503 | "vbi"); | |
2504 | ||
2505 | /* register v4l2 vbi video_device */ | |
2506 | ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, | |
2507 | vbi_nr[dev->devno]); | |
2508 | if (ret < 0) { | |
2509 | em28xx_errdev("unable to register vbi device\n"); | |
2510 | return ret; | |
2511 | } | |
2512 | } | |
2513 | ||
2514 | if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { | |
2515 | dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, | |
2516 | "radio"); | |
2517 | if (!dev->radio_dev) { | |
2518 | em28xx_errdev("cannot allocate video_device.\n"); | |
2519 | return -ENODEV; | |
2520 | } | |
2521 | ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, | |
2522 | radio_nr[dev->devno]); | |
2523 | if (ret < 0) { | |
2524 | em28xx_errdev("can't register radio device\n"); | |
2525 | return ret; | |
2526 | } | |
2527 | em28xx_info("Registered radio device as %s\n", | |
2528 | video_device_node_name(dev->radio_dev)); | |
2529 | } | |
2530 | ||
2531 | em28xx_info("V4L2 video device registered as %s\n", | |
2532 | video_device_node_name(dev->vdev)); | |
2533 | ||
2534 | if (dev->vbi_dev) | |
2535 | em28xx_info("V4L2 VBI device registered as %s\n", | |
2536 | video_device_node_name(dev->vbi_dev)); | |
2537 | ||
2538 | return 0; | |
2539 | } |