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d855497e MI |
1 | /* |
2 | * | |
3 | * $Id$ | |
4 | * | |
5 | * Copyright (C) 2005 Mike Isely <isely@pobox.com> | |
6 | * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/kernel.h> | |
ce4260c3 | 24 | #include <linux/version.h> |
d855497e MI |
25 | #include "pvrusb2-context.h" |
26 | #include "pvrusb2-hdw.h" | |
27 | #include "pvrusb2.h" | |
28 | #include "pvrusb2-debug.h" | |
29 | #include "pvrusb2-v4l2.h" | |
30 | #include "pvrusb2-ioread.h" | |
75910053 | 31 | #include <linux/videodev.h> |
d855497e MI |
32 | #include <linux/videodev2.h> |
33 | #include <media/v4l2-common.h> | |
34 | ||
35 | struct pvr2_v4l2_dev; | |
36 | struct pvr2_v4l2_fh; | |
37 | struct pvr2_v4l2; | |
38 | ||
d855497e | 39 | struct pvr2_v4l2_dev { |
75910053 | 40 | struct video_device devbase; /* MUST be first! */ |
d855497e | 41 | struct pvr2_v4l2 *v4lp; |
d855497e | 42 | struct pvr2_context_stream *stream; |
d855497e MI |
43 | enum pvr2_config config; |
44 | }; | |
45 | ||
46 | struct pvr2_v4l2_fh { | |
47 | struct pvr2_channel channel; | |
48 | struct pvr2_v4l2_dev *dev_info; | |
49 | enum v4l2_priority prio; | |
50 | struct pvr2_ioread *rhp; | |
51 | struct file *file; | |
52 | struct pvr2_v4l2 *vhead; | |
53 | struct pvr2_v4l2_fh *vnext; | |
54 | struct pvr2_v4l2_fh *vprev; | |
55 | wait_queue_head_t wait_data; | |
56 | int fw_mode_flag; | |
57 | }; | |
58 | ||
59 | struct pvr2_v4l2 { | |
60 | struct pvr2_channel channel; | |
61 | struct pvr2_v4l2_fh *vfirst; | |
62 | struct pvr2_v4l2_fh *vlast; | |
63 | ||
64 | struct v4l2_prio_state prio; | |
65 | ||
66 | /* streams */ | |
75910053 | 67 | struct pvr2_v4l2_dev *vdev; |
d855497e MI |
68 | }; |
69 | ||
70 | static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; | |
71 | module_param_array(video_nr, int, NULL, 0444); | |
72 | MODULE_PARM_DESC(video_nr, "Offset for device's minor"); | |
73 | ||
07e337ee | 74 | static struct v4l2_capability pvr_capability ={ |
d855497e MI |
75 | .driver = "pvrusb2", |
76 | .card = "Hauppauge WinTV pvr-usb2", | |
77 | .bus_info = "usb", | |
78 | .version = KERNEL_VERSION(0,8,0), | |
79 | .capabilities = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE | | |
80 | V4L2_CAP_TUNER | V4L2_CAP_AUDIO | | |
81 | V4L2_CAP_READWRITE), | |
82 | .reserved = {0,0,0,0} | |
83 | }; | |
84 | ||
85 | static struct v4l2_tuner pvr_v4l2_tuners[]= { | |
86 | { | |
87 | .index = 0, | |
88 | .name = "TV Tuner", | |
89 | .type = V4L2_TUNER_ANALOG_TV, | |
90 | .capability = (V4L2_TUNER_CAP_NORM | | |
91 | V4L2_TUNER_CAP_STEREO | | |
92 | V4L2_TUNER_CAP_LANG1 | | |
93 | V4L2_TUNER_CAP_LANG2), | |
94 | .rangelow = 0, | |
95 | .rangehigh = 0, | |
96 | .rxsubchans = V4L2_TUNER_SUB_STEREO, | |
97 | .audmode = V4L2_TUNER_MODE_STEREO, | |
98 | .signal = 0, | |
99 | .afc = 0, | |
100 | .reserved = {0,0,0,0} | |
101 | } | |
102 | }; | |
103 | ||
07e337ee | 104 | static struct v4l2_fmtdesc pvr_fmtdesc [] = { |
d855497e MI |
105 | { |
106 | .index = 0, | |
107 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
108 | .flags = V4L2_FMT_FLAG_COMPRESSED, | |
109 | .description = "MPEG1/2", | |
110 | // This should really be V4L2_PIX_FMT_MPEG, but xawtv | |
111 | // breaks when I do that. | |
112 | .pixelformat = 0, // V4L2_PIX_FMT_MPEG, | |
113 | .reserved = { 0, 0, 0, 0 } | |
114 | } | |
115 | }; | |
116 | ||
117 | #define PVR_FORMAT_PIX 0 | |
118 | #define PVR_FORMAT_VBI 1 | |
119 | ||
07e337ee | 120 | static struct v4l2_format pvr_format [] = { |
d855497e MI |
121 | [PVR_FORMAT_PIX] = { |
122 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
123 | .fmt = { | |
124 | .pix = { | |
125 | .width = 720, | |
126 | .height = 576, | |
127 | // This should really be V4L2_PIX_FMT_MPEG, | |
128 | // but xawtv breaks when I do that. | |
129 | .pixelformat = 0, // V4L2_PIX_FMT_MPEG, | |
130 | .field = V4L2_FIELD_INTERLACED, | |
131 | .bytesperline = 0, // doesn't make sense | |
132 | // here | |
133 | //FIXME : Don't know what to put here... | |
134 | .sizeimage = (32*1024), | |
135 | .colorspace = 0, // doesn't make sense here | |
136 | .priv = 0 | |
137 | } | |
138 | } | |
139 | }, | |
140 | [PVR_FORMAT_VBI] = { | |
141 | .type = V4L2_BUF_TYPE_VBI_CAPTURE, | |
142 | .fmt = { | |
143 | .vbi = { | |
144 | .sampling_rate = 27000000, | |
145 | .offset = 248, | |
146 | .samples_per_line = 1443, | |
147 | .sample_format = V4L2_PIX_FMT_GREY, | |
148 | .start = { 0, 0 }, | |
149 | .count = { 0, 0 }, | |
150 | .flags = 0, | |
151 | .reserved = { 0, 0 } | |
152 | } | |
153 | } | |
154 | } | |
155 | }; | |
156 | ||
157 | /* | |
158 | * pvr_ioctl() | |
159 | * | |
160 | * This is part of Video 4 Linux API. The procedure handles ioctl() calls. | |
161 | * | |
162 | */ | |
163 | static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file, | |
164 | unsigned int cmd, void *arg) | |
165 | { | |
166 | struct pvr2_v4l2_fh *fh = file->private_data; | |
167 | struct pvr2_v4l2 *vp = fh->vhead; | |
168 | struct pvr2_v4l2_dev *dev_info = fh->dev_info; | |
169 | struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; | |
170 | int ret = -EINVAL; | |
171 | ||
172 | if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { | |
173 | v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),cmd); | |
174 | } | |
175 | ||
176 | if (!pvr2_hdw_dev_ok(hdw)) { | |
177 | pvr2_trace(PVR2_TRACE_ERROR_LEGS, | |
178 | "ioctl failed - bad or no context"); | |
179 | return -EFAULT; | |
180 | } | |
181 | ||
182 | /* check priority */ | |
183 | switch (cmd) { | |
184 | case VIDIOC_S_CTRL: | |
185 | case VIDIOC_S_STD: | |
186 | case VIDIOC_S_INPUT: | |
187 | case VIDIOC_S_TUNER: | |
188 | case VIDIOC_S_FREQUENCY: | |
189 | ret = v4l2_prio_check(&vp->prio, &fh->prio); | |
190 | if (ret) | |
191 | return ret; | |
192 | } | |
193 | ||
194 | switch (cmd) { | |
195 | case VIDIOC_QUERYCAP: | |
196 | { | |
197 | struct v4l2_capability *cap = arg; | |
198 | ||
199 | memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability)); | |
200 | ||
201 | ret = 0; | |
202 | break; | |
203 | } | |
204 | ||
205 | case VIDIOC_G_PRIORITY: | |
206 | { | |
207 | enum v4l2_priority *p = arg; | |
208 | ||
209 | *p = v4l2_prio_max(&vp->prio); | |
210 | ret = 0; | |
211 | break; | |
212 | } | |
213 | ||
214 | case VIDIOC_S_PRIORITY: | |
215 | { | |
216 | enum v4l2_priority *prio = arg; | |
217 | ||
218 | ret = v4l2_prio_change(&vp->prio, &fh->prio, *prio); | |
219 | break; | |
220 | } | |
221 | ||
222 | case VIDIOC_ENUMSTD: | |
223 | { | |
224 | struct v4l2_standard *vs = (struct v4l2_standard *)arg; | |
225 | int idx = vs->index; | |
226 | ret = pvr2_hdw_get_stdenum_value(hdw,vs,idx+1); | |
227 | break; | |
228 | } | |
229 | ||
230 | case VIDIOC_G_STD: | |
231 | { | |
232 | int val = 0; | |
233 | ret = pvr2_ctrl_get_value( | |
234 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),&val); | |
235 | *(v4l2_std_id *)arg = val; | |
236 | break; | |
237 | } | |
238 | ||
239 | case VIDIOC_S_STD: | |
240 | { | |
241 | ret = pvr2_ctrl_set_value( | |
242 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR), | |
243 | *(v4l2_std_id *)arg); | |
244 | break; | |
245 | } | |
246 | ||
247 | case VIDIOC_ENUMINPUT: | |
248 | { | |
249 | struct pvr2_ctrl *cptr; | |
250 | struct v4l2_input *vi = (struct v4l2_input *)arg; | |
251 | struct v4l2_input tmp; | |
252 | unsigned int cnt; | |
253 | ||
254 | cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); | |
255 | ||
256 | memset(&tmp,0,sizeof(tmp)); | |
257 | tmp.index = vi->index; | |
258 | ret = 0; | |
259 | switch (vi->index) { | |
260 | case PVR2_CVAL_INPUT_TV: | |
261 | case PVR2_CVAL_INPUT_RADIO: | |
262 | tmp.type = V4L2_INPUT_TYPE_TUNER; | |
263 | break; | |
264 | case PVR2_CVAL_INPUT_SVIDEO: | |
265 | case PVR2_CVAL_INPUT_COMPOSITE: | |
266 | tmp.type = V4L2_INPUT_TYPE_CAMERA; | |
267 | break; | |
268 | default: | |
269 | ret = -EINVAL; | |
270 | break; | |
271 | } | |
272 | if (ret < 0) break; | |
273 | ||
274 | cnt = 0; | |
275 | pvr2_ctrl_get_valname(cptr,vi->index, | |
276 | tmp.name,sizeof(tmp.name)-1,&cnt); | |
277 | tmp.name[cnt] = 0; | |
278 | ||
279 | /* Don't bother with audioset, since this driver currently | |
280 | always switches the audio whenever the video is | |
281 | switched. */ | |
282 | ||
283 | /* Handling std is a tougher problem. It doesn't make | |
284 | sense in cases where a device might be multi-standard. | |
285 | We could just copy out the current value for the | |
286 | standard, but it can change over time. For now just | |
287 | leave it zero. */ | |
288 | ||
289 | memcpy(vi, &tmp, sizeof(tmp)); | |
290 | ||
291 | ret = 0; | |
292 | break; | |
293 | } | |
294 | ||
295 | case VIDIOC_G_INPUT: | |
296 | { | |
297 | struct pvr2_ctrl *cptr; | |
298 | struct v4l2_input *vi = (struct v4l2_input *)arg; | |
299 | int val; | |
300 | cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); | |
301 | val = 0; | |
302 | ret = pvr2_ctrl_get_value(cptr,&val); | |
303 | vi->index = val; | |
304 | break; | |
305 | } | |
306 | ||
307 | case VIDIOC_S_INPUT: | |
308 | { | |
309 | struct v4l2_input *vi = (struct v4l2_input *)arg; | |
310 | ret = pvr2_ctrl_set_value( | |
311 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT), | |
312 | vi->index); | |
313 | break; | |
314 | } | |
315 | ||
316 | case VIDIOC_ENUMAUDIO: | |
317 | { | |
318 | ret = -EINVAL; | |
319 | break; | |
320 | } | |
321 | ||
322 | case VIDIOC_G_AUDIO: | |
323 | { | |
324 | ret = -EINVAL; | |
325 | break; | |
326 | } | |
327 | ||
328 | case VIDIOC_S_AUDIO: | |
329 | { | |
330 | ret = -EINVAL; | |
331 | break; | |
332 | } | |
333 | case VIDIOC_G_TUNER: | |
334 | { | |
335 | struct v4l2_tuner *vt = (struct v4l2_tuner *)arg; | |
336 | unsigned int status_mask; | |
337 | int val; | |
338 | if (vt->index !=0) break; | |
339 | ||
340 | status_mask = pvr2_hdw_get_signal_status(hdw); | |
341 | ||
342 | memcpy(vt, &pvr_v4l2_tuners[vt->index], | |
343 | sizeof(struct v4l2_tuner)); | |
344 | ||
345 | vt->signal = 0; | |
346 | if (status_mask & PVR2_SIGNAL_OK) { | |
347 | if (status_mask & PVR2_SIGNAL_STEREO) { | |
348 | vt->rxsubchans = V4L2_TUNER_SUB_STEREO; | |
349 | } else { | |
350 | vt->rxsubchans = V4L2_TUNER_SUB_MONO; | |
351 | } | |
352 | if (status_mask & PVR2_SIGNAL_SAP) { | |
353 | vt->rxsubchans |= (V4L2_TUNER_SUB_LANG1 | | |
354 | V4L2_TUNER_SUB_LANG2); | |
355 | } | |
356 | vt->signal = 65535; | |
357 | } | |
358 | ||
359 | val = 0; | |
360 | ret = pvr2_ctrl_get_value( | |
361 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE), | |
362 | &val); | |
363 | vt->audmode = val; | |
364 | break; | |
365 | } | |
366 | ||
367 | case VIDIOC_S_TUNER: | |
368 | { | |
369 | struct v4l2_tuner *vt=(struct v4l2_tuner *)arg; | |
370 | ||
371 | if (vt->index != 0) | |
372 | break; | |
373 | ||
374 | ret = pvr2_ctrl_set_value( | |
375 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE), | |
376 | vt->audmode); | |
377 | } | |
378 | ||
379 | case VIDIOC_S_FREQUENCY: | |
380 | { | |
381 | const struct v4l2_frequency *vf = (struct v4l2_frequency *)arg; | |
382 | ret = pvr2_ctrl_set_value( | |
383 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY), | |
384 | vf->frequency * 62500); | |
385 | break; | |
386 | } | |
387 | ||
388 | case VIDIOC_G_FREQUENCY: | |
389 | { | |
390 | struct v4l2_frequency *vf = (struct v4l2_frequency *)arg; | |
391 | int val = 0; | |
392 | ret = pvr2_ctrl_get_value( | |
393 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY), | |
394 | &val); | |
395 | val /= 62500; | |
396 | vf->frequency = val; | |
397 | break; | |
398 | } | |
399 | ||
400 | case VIDIOC_ENUM_FMT: | |
401 | { | |
402 | struct v4l2_fmtdesc *fd = (struct v4l2_fmtdesc *)arg; | |
403 | ||
404 | /* Only one format is supported : mpeg.*/ | |
405 | if (fd->index != 0) | |
406 | break; | |
407 | ||
408 | memcpy(fd, pvr_fmtdesc, sizeof(struct v4l2_fmtdesc)); | |
409 | ret = 0; | |
410 | break; | |
411 | } | |
412 | ||
413 | case VIDIOC_G_FMT: | |
414 | { | |
415 | struct v4l2_format *vf = (struct v4l2_format *)arg; | |
416 | int val; | |
417 | switch(vf->type) { | |
418 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
419 | memcpy(vf, &pvr_format[PVR_FORMAT_PIX], | |
420 | sizeof(struct v4l2_format)); | |
421 | val = 0; | |
422 | pvr2_ctrl_get_value( | |
423 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES), | |
424 | &val); | |
425 | vf->fmt.pix.width = val; | |
426 | val = 0; | |
d855497e MI |
427 | pvr2_ctrl_get_value( |
428 | pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES), | |
429 | &val); | |
430 | vf->fmt.pix.height = val; | |
431 | ret = 0; | |
432 | break; | |
433 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
434 | // ????? Still need to figure out to do VBI correctly | |
435 | ret = -EINVAL; | |
436 | break; | |
437 | default: | |
438 | ret = -EINVAL; | |
439 | break; | |
440 | } | |
441 | break; | |
442 | } | |
443 | ||
444 | case VIDIOC_TRY_FMT: | |
445 | case VIDIOC_S_FMT: | |
446 | { | |
447 | struct v4l2_format *vf = (struct v4l2_format *)arg; | |
448 | ||
449 | ret = 0; | |
450 | switch(vf->type) { | |
451 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: { | |
e95a1915 MI |
452 | int lmin,lmax; |
453 | struct pvr2_ctrl *hcp,*vcp; | |
d855497e MI |
454 | int h = vf->fmt.pix.height; |
455 | int w = vf->fmt.pix.width; | |
e95a1915 MI |
456 | hcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES); |
457 | vcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES); | |
458 | ||
459 | lmin = pvr2_ctrl_get_min(hcp); | |
460 | lmax = pvr2_ctrl_get_max(hcp); | |
e95a1915 MI |
461 | if (w < lmin) { |
462 | w = lmin; | |
463 | } else if (w > lmax) { | |
464 | w = lmax; | |
d855497e | 465 | } |
b31e341b HV |
466 | lmin = pvr2_ctrl_get_min(vcp); |
467 | lmax = pvr2_ctrl_get_max(vcp); | |
468 | if (h < lmin) { | |
469 | h = lmin; | |
470 | } else if (h > lmax) { | |
471 | h = lmax; | |
472 | } | |
d855497e MI |
473 | |
474 | memcpy(vf, &pvr_format[PVR_FORMAT_PIX], | |
475 | sizeof(struct v4l2_format)); | |
039c430f MI |
476 | vf->fmt.pix.width = w; |
477 | vf->fmt.pix.height = h; | |
d855497e MI |
478 | |
479 | if (cmd == VIDIOC_S_FMT) { | |
e95a1915 MI |
480 | pvr2_ctrl_set_value(hcp,vf->fmt.pix.width); |
481 | pvr2_ctrl_set_value(vcp,vf->fmt.pix.height); | |
d855497e MI |
482 | } |
483 | } break; | |
484 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
485 | // ????? Still need to figure out to do VBI correctly | |
486 | ret = -EINVAL; | |
487 | break; | |
488 | default: | |
489 | ret = -EINVAL; | |
490 | break; | |
491 | } | |
492 | break; | |
493 | } | |
494 | ||
495 | case VIDIOC_STREAMON: | |
496 | { | |
497 | ret = pvr2_hdw_set_stream_type(hdw,dev_info->config); | |
498 | if (ret < 0) return ret; | |
499 | ret = pvr2_hdw_set_streaming(hdw,!0); | |
500 | break; | |
501 | } | |
502 | ||
503 | case VIDIOC_STREAMOFF: | |
504 | { | |
505 | ret = pvr2_hdw_set_streaming(hdw,0); | |
506 | break; | |
507 | } | |
508 | ||
509 | case VIDIOC_QUERYCTRL: | |
510 | { | |
511 | struct pvr2_ctrl *cptr; | |
512 | struct v4l2_queryctrl *vc = (struct v4l2_queryctrl *)arg; | |
513 | ret = 0; | |
1d9f8461 MI |
514 | if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) { |
515 | cptr = pvr2_hdw_get_ctrl_nextv4l( | |
516 | hdw,(vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL)); | |
517 | if (cptr) vc->id = pvr2_ctrl_get_v4lid(cptr); | |
518 | } else { | |
519 | cptr = pvr2_hdw_get_ctrl_v4l(hdw,vc->id); | |
520 | } | |
d855497e | 521 | if (!cptr) { |
0885ba1d | 522 | pvr2_trace(PVR2_TRACE_V4LIOCTL, |
a761f431 MI |
523 | "QUERYCTRL id=0x%x not implemented here", |
524 | vc->id); | |
d855497e MI |
525 | ret = -EINVAL; |
526 | break; | |
527 | } | |
528 | ||
a761f431 MI |
529 | pvr2_trace(PVR2_TRACE_V4LIOCTL, |
530 | "QUERYCTRL id=0x%x mapping name=%s (%s)", | |
531 | vc->id,pvr2_ctrl_get_name(cptr), | |
532 | pvr2_ctrl_get_desc(cptr)); | |
533 | strlcpy(vc->name,pvr2_ctrl_get_desc(cptr),sizeof(vc->name)); | |
534 | vc->flags = pvr2_ctrl_get_v4lflags(cptr); | |
d855497e MI |
535 | vc->default_value = pvr2_ctrl_get_def(cptr); |
536 | switch (pvr2_ctrl_get_type(cptr)) { | |
537 | case pvr2_ctl_enum: | |
538 | vc->type = V4L2_CTRL_TYPE_MENU; | |
539 | vc->minimum = 0; | |
540 | vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1; | |
541 | vc->step = 1; | |
542 | break; | |
33213963 | 543 | case pvr2_ctl_bool: |
1d9f8461 | 544 | vc->type = V4L2_CTRL_TYPE_BOOLEAN; |
33213963 MI |
545 | vc->minimum = 0; |
546 | vc->maximum = 1; | |
547 | vc->step = 1; | |
548 | break; | |
d855497e MI |
549 | case pvr2_ctl_int: |
550 | vc->type = V4L2_CTRL_TYPE_INTEGER; | |
551 | vc->minimum = pvr2_ctrl_get_min(cptr); | |
552 | vc->maximum = pvr2_ctrl_get_max(cptr); | |
553 | vc->step = 1; | |
554 | break; | |
555 | default: | |
0885ba1d | 556 | pvr2_trace(PVR2_TRACE_V4LIOCTL, |
a761f431 MI |
557 | "QUERYCTRL id=0x%x name=%s not mappable", |
558 | vc->id,pvr2_ctrl_get_name(cptr)); | |
d855497e MI |
559 | ret = -EINVAL; |
560 | break; | |
561 | } | |
562 | break; | |
563 | } | |
564 | ||
565 | case VIDIOC_QUERYMENU: | |
566 | { | |
567 | struct v4l2_querymenu *vm = (struct v4l2_querymenu *)arg; | |
568 | unsigned int cnt = 0; | |
569 | ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw,vm->id), | |
570 | vm->index, | |
571 | vm->name,sizeof(vm->name)-1, | |
572 | &cnt); | |
573 | vm->name[cnt] = 0; | |
574 | break; | |
575 | } | |
576 | ||
577 | case VIDIOC_G_CTRL: | |
578 | { | |
579 | struct v4l2_control *vc = (struct v4l2_control *)arg; | |
580 | int val = 0; | |
581 | ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id), | |
582 | &val); | |
583 | vc->value = val; | |
584 | break; | |
585 | } | |
586 | ||
587 | case VIDIOC_S_CTRL: | |
588 | { | |
589 | struct v4l2_control *vc = (struct v4l2_control *)arg; | |
590 | ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id), | |
591 | vc->value); | |
592 | break; | |
593 | } | |
594 | ||
1d9f8461 MI |
595 | case VIDIOC_G_EXT_CTRLS: |
596 | { | |
597 | struct v4l2_ext_controls *ctls = | |
598 | (struct v4l2_ext_controls *)arg; | |
599 | struct v4l2_ext_control *ctrl; | |
600 | unsigned int idx; | |
601 | int val; | |
602 | for (idx = 0; idx < ctls->count; idx++) { | |
603 | ctrl = ctls->controls + idx; | |
604 | ret = pvr2_ctrl_get_value( | |
605 | pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),&val); | |
606 | if (ret) { | |
607 | ctls->error_idx = idx; | |
608 | break; | |
609 | } | |
610 | /* Ensure that if read as a 64 bit value, the user | |
611 | will still get a hopefully sane value */ | |
612 | ctrl->value64 = 0; | |
613 | ctrl->value = val; | |
614 | } | |
615 | break; | |
616 | } | |
617 | ||
618 | case VIDIOC_S_EXT_CTRLS: | |
619 | { | |
620 | struct v4l2_ext_controls *ctls = | |
621 | (struct v4l2_ext_controls *)arg; | |
622 | struct v4l2_ext_control *ctrl; | |
623 | unsigned int idx; | |
624 | for (idx = 0; idx < ctls->count; idx++) { | |
625 | ctrl = ctls->controls + idx; | |
626 | ret = pvr2_ctrl_set_value( | |
627 | pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id), | |
628 | ctrl->value); | |
629 | if (ret) { | |
630 | ctls->error_idx = idx; | |
631 | break; | |
632 | } | |
633 | } | |
634 | break; | |
635 | } | |
636 | ||
637 | case VIDIOC_TRY_EXT_CTRLS: | |
638 | { | |
639 | struct v4l2_ext_controls *ctls = | |
640 | (struct v4l2_ext_controls *)arg; | |
641 | struct v4l2_ext_control *ctrl; | |
642 | struct pvr2_ctrl *pctl; | |
643 | unsigned int idx; | |
644 | /* For the moment just validate that the requested control | |
645 | actually exists. */ | |
646 | for (idx = 0; idx < ctls->count; idx++) { | |
647 | ctrl = ctls->controls + idx; | |
648 | pctl = pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id); | |
649 | if (!pctl) { | |
650 | ret = -EINVAL; | |
651 | ctls->error_idx = idx; | |
652 | break; | |
653 | } | |
654 | } | |
655 | break; | |
656 | } | |
657 | ||
d855497e MI |
658 | case VIDIOC_LOG_STATUS: |
659 | { | |
d855497e | 660 | pvr2_hdw_trigger_module_log(hdw); |
d855497e MI |
661 | ret = 0; |
662 | break; | |
663 | } | |
32ffa9ae MI |
664 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
665 | case VIDIOC_INT_G_REGISTER: | |
666 | case VIDIOC_INT_S_REGISTER: | |
667 | { | |
668 | u32 val; | |
669 | struct v4l2_register *req = (struct v4l2_register *)arg; | |
670 | if (cmd == VIDIOC_INT_S_REGISTER) val = req->val; | |
671 | ret = pvr2_hdw_register_access( | |
672 | hdw,req->i2c_id,req->reg, | |
673 | cmd == VIDIOC_INT_S_REGISTER,&val); | |
674 | if (cmd == 0) req->val = val; | |
675 | break; | |
676 | } | |
677 | #endif | |
d855497e MI |
678 | |
679 | default : | |
680 | ret = v4l_compat_translate_ioctl(inode,file,cmd, | |
681 | arg,pvr2_v4l2_do_ioctl); | |
682 | } | |
683 | ||
684 | pvr2_hdw_commit_ctl(hdw); | |
685 | ||
686 | if (ret < 0) { | |
687 | if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { | |
0885ba1d | 688 | pvr2_trace(PVR2_TRACE_V4LIOCTL, |
d855497e MI |
689 | "pvr2_v4l2_do_ioctl failure, ret=%d",ret); |
690 | } else { | |
0885ba1d MI |
691 | if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) { |
692 | pvr2_trace(PVR2_TRACE_V4LIOCTL, | |
d855497e MI |
693 | "pvr2_v4l2_do_ioctl failure, ret=%d" |
694 | " command was:",ret); | |
695 | v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw), | |
696 | cmd); | |
697 | } | |
698 | } | |
699 | } else { | |
700 | pvr2_trace(PVR2_TRACE_V4LIOCTL, | |
701 | "pvr2_v4l2_do_ioctl complete, ret=%d (0x%x)", | |
702 | ret,ret); | |
703 | } | |
704 | return ret; | |
705 | } | |
706 | ||
707 | ||
708 | static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip) | |
709 | { | |
47ed3bc6 | 710 | printk(KERN_INFO "pvrusb2: unregistering device video%d [%s]\n", |
75910053 MI |
711 | dip->devbase.minor,pvr2_config_get_name(dip->config)); |
712 | ||
713 | /* Paranoia */ | |
714 | dip->v4lp = 0; | |
715 | dip->stream = 0; | |
716 | ||
717 | /* Actual deallocation happens later when all internal references | |
718 | are gone. */ | |
719 | video_unregister_device(&dip->devbase); | |
d855497e MI |
720 | } |
721 | ||
722 | ||
723 | static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp) | |
724 | { | |
725 | pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw,-1); | |
75910053 | 726 | pvr2_v4l2_dev_destroy(vp->vdev); |
d855497e MI |
727 | |
728 | pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp); | |
729 | pvr2_channel_done(&vp->channel); | |
730 | kfree(vp); | |
731 | } | |
732 | ||
733 | ||
75910053 MI |
734 | static void pvr2_video_device_release(struct video_device *vdev) |
735 | { | |
736 | struct pvr2_v4l2_dev *dev; | |
737 | dev = container_of(vdev,struct pvr2_v4l2_dev,devbase); | |
738 | kfree(dev); | |
739 | } | |
740 | ||
741 | ||
07e337ee | 742 | static void pvr2_v4l2_internal_check(struct pvr2_channel *chp) |
d855497e MI |
743 | { |
744 | struct pvr2_v4l2 *vp; | |
745 | vp = container_of(chp,struct pvr2_v4l2,channel); | |
746 | if (!vp->channel.mc_head->disconnect_flag) return; | |
747 | if (vp->vfirst) return; | |
748 | pvr2_v4l2_destroy_no_lock(vp); | |
749 | } | |
750 | ||
751 | ||
07e337ee AB |
752 | static int pvr2_v4l2_ioctl(struct inode *inode, struct file *file, |
753 | unsigned int cmd, unsigned long arg) | |
d855497e MI |
754 | { |
755 | ||
756 | /* Temporary hack : use ivtv api until a v4l2 one is available. */ | |
757 | #define IVTV_IOC_G_CODEC 0xFFEE7703 | |
758 | #define IVTV_IOC_S_CODEC 0xFFEE7704 | |
759 | if (cmd == IVTV_IOC_G_CODEC || cmd == IVTV_IOC_S_CODEC) return 0; | |
760 | return video_usercopy(inode, file, cmd, arg, pvr2_v4l2_do_ioctl); | |
761 | } | |
762 | ||
763 | ||
07e337ee | 764 | static int pvr2_v4l2_release(struct inode *inode, struct file *file) |
d855497e MI |
765 | { |
766 | struct pvr2_v4l2_fh *fhp = file->private_data; | |
767 | struct pvr2_v4l2 *vp = fhp->vhead; | |
768 | struct pvr2_context *mp = fhp->vhead->channel.mc_head; | |
769 | ||
770 | pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release"); | |
771 | ||
772 | if (fhp->rhp) { | |
773 | struct pvr2_stream *sp; | |
774 | struct pvr2_hdw *hdw; | |
775 | hdw = fhp->channel.mc_head->hdw; | |
776 | pvr2_hdw_set_streaming(hdw,0); | |
777 | sp = pvr2_ioread_get_stream(fhp->rhp); | |
a0fd1cb1 | 778 | if (sp) pvr2_stream_set_callback(sp,NULL,NULL); |
d855497e | 779 | pvr2_ioread_destroy(fhp->rhp); |
a0fd1cb1 | 780 | fhp->rhp = NULL; |
d855497e MI |
781 | } |
782 | v4l2_prio_close(&vp->prio, &fhp->prio); | |
783 | file->private_data = NULL; | |
784 | ||
785 | pvr2_context_enter(mp); do { | |
786 | if (fhp->vnext) { | |
787 | fhp->vnext->vprev = fhp->vprev; | |
788 | } else { | |
789 | vp->vlast = fhp->vprev; | |
790 | } | |
791 | if (fhp->vprev) { | |
792 | fhp->vprev->vnext = fhp->vnext; | |
793 | } else { | |
794 | vp->vfirst = fhp->vnext; | |
795 | } | |
a0fd1cb1 MI |
796 | fhp->vnext = NULL; |
797 | fhp->vprev = NULL; | |
798 | fhp->vhead = NULL; | |
d855497e MI |
799 | pvr2_channel_done(&fhp->channel); |
800 | pvr2_trace(PVR2_TRACE_STRUCT, | |
801 | "Destroying pvr_v4l2_fh id=%p",fhp); | |
802 | kfree(fhp); | |
803 | if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) { | |
804 | pvr2_v4l2_destroy_no_lock(vp); | |
805 | } | |
806 | } while (0); pvr2_context_exit(mp); | |
807 | return 0; | |
808 | } | |
809 | ||
810 | ||
07e337ee | 811 | static int pvr2_v4l2_open(struct inode *inode, struct file *file) |
d855497e | 812 | { |
75910053 | 813 | struct pvr2_v4l2_dev *dip; /* Our own context pointer */ |
d855497e MI |
814 | struct pvr2_v4l2_fh *fhp; |
815 | struct pvr2_v4l2 *vp; | |
816 | struct pvr2_hdw *hdw; | |
817 | ||
75910053 | 818 | dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase); |
d855497e MI |
819 | |
820 | vp = dip->v4lp; | |
821 | hdw = vp->channel.hdw; | |
822 | ||
823 | pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open"); | |
824 | ||
825 | if (!pvr2_hdw_dev_ok(hdw)) { | |
826 | pvr2_trace(PVR2_TRACE_OPEN_CLOSE, | |
827 | "pvr2_v4l2_open: hardware not ready"); | |
828 | return -EIO; | |
829 | } | |
830 | ||
831 | fhp = kmalloc(sizeof(*fhp),GFP_KERNEL); | |
832 | if (!fhp) { | |
833 | return -ENOMEM; | |
834 | } | |
835 | memset(fhp,0,sizeof(*fhp)); | |
836 | ||
837 | init_waitqueue_head(&fhp->wait_data); | |
838 | fhp->dev_info = dip; | |
839 | ||
840 | pvr2_context_enter(vp->channel.mc_head); do { | |
841 | pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp); | |
842 | pvr2_channel_init(&fhp->channel,vp->channel.mc_head); | |
a0fd1cb1 | 843 | fhp->vnext = NULL; |
d855497e MI |
844 | fhp->vprev = vp->vlast; |
845 | if (vp->vlast) { | |
846 | vp->vlast->vnext = fhp; | |
847 | } else { | |
848 | vp->vfirst = fhp; | |
849 | } | |
850 | vp->vlast = fhp; | |
851 | fhp->vhead = vp; | |
852 | } while (0); pvr2_context_exit(vp->channel.mc_head); | |
853 | ||
854 | fhp->file = file; | |
855 | file->private_data = fhp; | |
856 | v4l2_prio_open(&vp->prio,&fhp->prio); | |
857 | ||
858 | fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw); | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | ||
864 | static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp) | |
865 | { | |
866 | wake_up(&fhp->wait_data); | |
867 | } | |
868 | ||
869 | static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh) | |
870 | { | |
871 | int ret; | |
872 | struct pvr2_stream *sp; | |
873 | struct pvr2_hdw *hdw; | |
874 | if (fh->rhp) return 0; | |
875 | ||
876 | /* First read() attempt. Try to claim the stream and start | |
877 | it... */ | |
878 | if ((ret = pvr2_channel_claim_stream(&fh->channel, | |
879 | fh->dev_info->stream)) != 0) { | |
880 | /* Someone else must already have it */ | |
881 | return ret; | |
882 | } | |
883 | ||
884 | fh->rhp = pvr2_channel_create_mpeg_stream(fh->dev_info->stream); | |
885 | if (!fh->rhp) { | |
a0fd1cb1 | 886 | pvr2_channel_claim_stream(&fh->channel,NULL); |
d855497e MI |
887 | return -ENOMEM; |
888 | } | |
889 | ||
890 | hdw = fh->channel.mc_head->hdw; | |
891 | sp = fh->dev_info->stream->stream; | |
892 | pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh); | |
893 | pvr2_hdw_set_stream_type(hdw,fh->dev_info->config); | |
894 | pvr2_hdw_set_streaming(hdw,!0); | |
895 | ret = pvr2_ioread_set_enabled(fh->rhp,!0); | |
896 | ||
897 | return ret; | |
898 | } | |
899 | ||
900 | ||
901 | static ssize_t pvr2_v4l2_read(struct file *file, | |
902 | char __user *buff, size_t count, loff_t *ppos) | |
903 | { | |
904 | struct pvr2_v4l2_fh *fh = file->private_data; | |
905 | int ret; | |
906 | ||
907 | if (fh->fw_mode_flag) { | |
908 | struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; | |
909 | char *tbuf; | |
910 | int c1,c2; | |
911 | int tcnt = 0; | |
912 | unsigned int offs = *ppos; | |
913 | ||
914 | tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL); | |
915 | if (!tbuf) return -ENOMEM; | |
916 | ||
917 | while (count) { | |
918 | c1 = count; | |
919 | if (c1 > PAGE_SIZE) c1 = PAGE_SIZE; | |
920 | c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1); | |
921 | if (c2 < 0) { | |
922 | tcnt = c2; | |
923 | break; | |
924 | } | |
925 | if (!c2) break; | |
926 | if (copy_to_user(buff,tbuf,c2)) { | |
927 | tcnt = -EFAULT; | |
928 | break; | |
929 | } | |
930 | offs += c2; | |
931 | tcnt += c2; | |
932 | buff += c2; | |
933 | count -= c2; | |
934 | *ppos += c2; | |
935 | } | |
936 | kfree(tbuf); | |
937 | return tcnt; | |
938 | } | |
939 | ||
940 | if (!fh->rhp) { | |
941 | ret = pvr2_v4l2_iosetup(fh); | |
942 | if (ret) { | |
943 | return ret; | |
944 | } | |
945 | } | |
946 | ||
947 | for (;;) { | |
948 | ret = pvr2_ioread_read(fh->rhp,buff,count); | |
949 | if (ret >= 0) break; | |
950 | if (ret != -EAGAIN) break; | |
951 | if (file->f_flags & O_NONBLOCK) break; | |
952 | /* Doing blocking I/O. Wait here. */ | |
953 | ret = wait_event_interruptible( | |
954 | fh->wait_data, | |
955 | pvr2_ioread_avail(fh->rhp) >= 0); | |
956 | if (ret < 0) break; | |
957 | } | |
958 | ||
959 | return ret; | |
960 | } | |
961 | ||
962 | ||
963 | static unsigned int pvr2_v4l2_poll(struct file *file, poll_table *wait) | |
964 | { | |
965 | unsigned int mask = 0; | |
966 | struct pvr2_v4l2_fh *fh = file->private_data; | |
967 | int ret; | |
968 | ||
969 | if (fh->fw_mode_flag) { | |
970 | mask |= POLLIN | POLLRDNORM; | |
971 | return mask; | |
972 | } | |
973 | ||
974 | if (!fh->rhp) { | |
975 | ret = pvr2_v4l2_iosetup(fh); | |
976 | if (ret) return POLLERR; | |
977 | } | |
978 | ||
979 | poll_wait(file,&fh->wait_data,wait); | |
980 | ||
981 | if (pvr2_ioread_avail(fh->rhp) >= 0) { | |
982 | mask |= POLLIN | POLLRDNORM; | |
983 | } | |
984 | ||
985 | return mask; | |
986 | } | |
987 | ||
988 | ||
989 | static struct file_operations vdev_fops = { | |
990 | .owner = THIS_MODULE, | |
991 | .open = pvr2_v4l2_open, | |
992 | .release = pvr2_v4l2_release, | |
993 | .read = pvr2_v4l2_read, | |
994 | .ioctl = pvr2_v4l2_ioctl, | |
995 | .llseek = no_llseek, | |
996 | .poll = pvr2_v4l2_poll, | |
997 | }; | |
998 | ||
999 | ||
1000 | #define VID_HARDWARE_PVRUSB2 38 /* FIXME : need a good value */ | |
1001 | ||
1002 | static struct video_device vdev_template = { | |
1003 | .owner = THIS_MODULE, | |
1004 | .type = VID_TYPE_CAPTURE | VID_TYPE_TUNER, | |
1005 | .type2 = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE | |
1006 | | V4L2_CAP_TUNER | V4L2_CAP_AUDIO | |
1007 | | V4L2_CAP_READWRITE), | |
1008 | .hardware = VID_HARDWARE_PVRUSB2, | |
1009 | .fops = &vdev_fops, | |
1010 | }; | |
1011 | ||
1012 | ||
1013 | static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip, | |
1014 | struct pvr2_v4l2 *vp, | |
1015 | enum pvr2_config cfg) | |
1016 | { | |
1017 | int mindevnum; | |
1018 | int unit_number; | |
1019 | int v4l_type; | |
1020 | dip->v4lp = vp; | |
1021 | dip->config = cfg; | |
1022 | ||
1023 | ||
1024 | switch (cfg) { | |
1025 | case pvr2_config_mpeg: | |
1026 | v4l_type = VFL_TYPE_GRABBER; | |
1027 | dip->stream = &vp->channel.mc_head->video_stream; | |
1028 | break; | |
1029 | case pvr2_config_vbi: | |
1030 | v4l_type = VFL_TYPE_VBI; | |
1031 | break; | |
1032 | case pvr2_config_radio: | |
1033 | v4l_type = VFL_TYPE_RADIO; | |
1034 | break; | |
1035 | default: | |
1036 | /* Bail out (this should be impossible) */ | |
1037 | err("Failed to set up pvrusb2 v4l dev" | |
1038 | " due to unrecognized config"); | |
1039 | return; | |
1040 | } | |
1041 | ||
1042 | if (!dip->stream) { | |
1043 | err("Failed to set up pvrusb2 v4l dev" | |
1044 | " due to missing stream instance"); | |
1045 | return; | |
1046 | } | |
1047 | ||
75910053 MI |
1048 | memcpy(&dip->devbase,&vdev_template,sizeof(vdev_template)); |
1049 | dip->devbase.release = pvr2_video_device_release; | |
d855497e MI |
1050 | |
1051 | mindevnum = -1; | |
1052 | unit_number = pvr2_hdw_get_unit_number(vp->channel.mc_head->hdw); | |
1053 | if ((unit_number >= 0) && (unit_number < PVR_NUM)) { | |
1054 | mindevnum = video_nr[unit_number]; | |
1055 | } | |
75910053 MI |
1056 | if ((video_register_device(&dip->devbase, v4l_type, mindevnum) < 0) && |
1057 | (video_register_device(&dip->devbase, v4l_type, -1) < 0)) { | |
d855497e MI |
1058 | err("Failed to register pvrusb2 v4l video device"); |
1059 | } else { | |
47ed3bc6 | 1060 | printk(KERN_INFO "pvrusb2: registered device video%d [%s]\n", |
75910053 | 1061 | dip->devbase.minor,pvr2_config_get_name(dip->config)); |
d855497e MI |
1062 | } |
1063 | ||
d855497e | 1064 | pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw, |
75910053 | 1065 | dip->devbase.minor); |
d855497e MI |
1066 | } |
1067 | ||
1068 | ||
1069 | struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp) | |
1070 | { | |
1071 | struct pvr2_v4l2 *vp; | |
1072 | ||
1073 | vp = kmalloc(sizeof(*vp),GFP_KERNEL); | |
1074 | if (!vp) return vp; | |
1075 | memset(vp,0,sizeof(*vp)); | |
75910053 MI |
1076 | vp->vdev = kmalloc(sizeof(*vp->vdev),GFP_KERNEL); |
1077 | if (!vp->vdev) { | |
1078 | kfree(vp); | |
1079 | return 0; | |
1080 | } | |
1081 | memset(vp->vdev,0,sizeof(*vp->vdev)); | |
d855497e MI |
1082 | pvr2_channel_init(&vp->channel,mnp); |
1083 | pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp); | |
1084 | ||
1085 | vp->channel.check_func = pvr2_v4l2_internal_check; | |
1086 | ||
1087 | /* register streams */ | |
75910053 | 1088 | pvr2_v4l2_dev_init(vp->vdev,vp,pvr2_config_mpeg); |
d855497e MI |
1089 | |
1090 | return vp; | |
1091 | } | |
1092 | ||
1093 | /* | |
1094 | Stuff for Emacs to see, in order to encourage consistent editing style: | |
1095 | *** Local Variables: *** | |
1096 | *** mode: c *** | |
1097 | *** fill-column: 75 *** | |
1098 | *** tab-width: 8 *** | |
1099 | *** c-basic-offset: 8 *** | |
1100 | *** End: *** | |
1101 | */ |