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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / usb / pvrusb2 / pvrusb2-v4l2.c
blobeaa08c7999d4fd81fcb0f23f925fa93690fb057d
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 *
4 * Copyright (C) 2005 Mike Isely <isely@pobox.com>
5 * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/slab.h>
10 #include "pvrusb2-context.h"
11 #include "pvrusb2-hdw.h"
12 #include "pvrusb2.h"
13 #include "pvrusb2-debug.h"
14 #include "pvrusb2-v4l2.h"
15 #include "pvrusb2-ioread.h"
16 #include <linux/videodev2.h>
17 #include <linux/module.h>
18 #include <media/v4l2-dev.h>
19 #include <media/v4l2-device.h>
20 #include <media/v4l2-fh.h>
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-ioctl.h>
23
24 struct pvr2_v4l2_dev;
25 struct pvr2_v4l2_fh;
26 struct pvr2_v4l2;
27
28 struct pvr2_v4l2_dev {
29 struct video_device devbase; /* MUST be first! */
30 struct pvr2_v4l2 *v4lp;
31 struct pvr2_context_stream *stream;
32 /* Information about this device: */
33 enum pvr2_config config; /* Expected stream format */
34 int v4l_type; /* V4L defined type for this device node */
35 enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */
36 };
37
38 struct pvr2_v4l2_fh {
39 struct v4l2_fh fh;
40 struct pvr2_channel channel;
41 struct pvr2_v4l2_dev *pdi;
42 struct pvr2_ioread *rhp;
43 struct file *file;
44 wait_queue_head_t wait_data;
45 int fw_mode_flag;
46 /* Map contiguous ordinal value to input id */
47 unsigned char *input_map;
48 unsigned int input_cnt;
49 };
50
51 struct pvr2_v4l2 {
52 struct pvr2_channel channel;
53
54 /* streams - Note that these must be separately, individually,
55 * allocated pointers. This is because the v4l core is going to
56 * manage their deletion - separately, individually... */
57 struct pvr2_v4l2_dev *dev_video;
58 struct pvr2_v4l2_dev *dev_radio;
59 };
60
61 static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
62 module_param_array(video_nr, int, NULL, 0444);
63 MODULE_PARM_DESC(video_nr, "Offset for device's video dev minor");
64 static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
65 module_param_array(radio_nr, int, NULL, 0444);
66 MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor");
67 static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
68 module_param_array(vbi_nr, int, NULL, 0444);
69 MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor");
70
71 #define PVR_FORMAT_PIX 0
72 #define PVR_FORMAT_VBI 1
73
74 static struct v4l2_format pvr_format [] = {
75 [PVR_FORMAT_PIX] = {
76 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
77 .fmt = {
78 .pix = {
79 .width = 720,
80 .height = 576,
81 .pixelformat = V4L2_PIX_FMT_MPEG,
82 .field = V4L2_FIELD_INTERLACED,
83 /* FIXME : Don't know what to put here... */
84 .sizeimage = 32 * 1024,
85 }
86 }
87 },
88 [PVR_FORMAT_VBI] = {
89 .type = V4L2_BUF_TYPE_VBI_CAPTURE,
90 .fmt = {
91 .vbi = {
92 .sampling_rate = 27000000,
93 .offset = 248,
94 .samples_per_line = 1443,
95 .sample_format = V4L2_PIX_FMT_GREY,
96 .start = { 0, 0 },
97 .count = { 0, 0 },
98 .flags = 0,
99 }
100 }
101 }
102 };
103
104
105
106 /*
107 * This is part of Video 4 Linux API. These procedures handle ioctl() calls.
108 */
109 static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
110 {
111 struct pvr2_v4l2_fh *fh = file->private_data;
112 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
113
114 strscpy(cap->driver, "pvrusb2", sizeof(cap->driver));
115 strscpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw),
116 sizeof(cap->bus_info));
117 strscpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card));
118 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
119 V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
120 V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS;
121 return 0;
122 }
123
124 static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std)
125 {
126 struct pvr2_v4l2_fh *fh = file->private_data;
127 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
128 int val = 0;
129 int ret;
130
131 ret = pvr2_ctrl_get_value(
132 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), &val);
133 *std = val;
134 return ret;
135 }
136
137 static int pvr2_s_std(struct file *file, void *priv, v4l2_std_id std)
138 {
139 struct pvr2_v4l2_fh *fh = file->private_data;
140 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
141 int ret;
142
143 ret = pvr2_ctrl_set_value(
144 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), std);
145 pvr2_hdw_commit_ctl(hdw);
146 return ret;
147 }
148
149 static int pvr2_querystd(struct file *file, void *priv, v4l2_std_id *std)
150 {
151 struct pvr2_v4l2_fh *fh = file->private_data;
152 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
153 int val = 0;
154 int ret;
155
156 ret = pvr2_ctrl_get_value(
157 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDDETECT), &val);
158 *std = val;
159 return ret;
160 }
161
162 static int pvr2_enum_input(struct file *file, void *priv, struct v4l2_input *vi)
163 {
164 struct pvr2_v4l2_fh *fh = file->private_data;
165 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
166 struct pvr2_ctrl *cptr;
167 struct v4l2_input tmp;
168 unsigned int cnt;
169 int val;
170
171 cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
172
173 memset(&tmp, 0, sizeof(tmp));
174 tmp.index = vi->index;
175 if (vi->index >= fh->input_cnt)
176 return -EINVAL;
177 val = fh->input_map[vi->index];
178 switch (val) {
179 case PVR2_CVAL_INPUT_TV:
180 case PVR2_CVAL_INPUT_DTV:
181 case PVR2_CVAL_INPUT_RADIO:
182 tmp.type = V4L2_INPUT_TYPE_TUNER;
183 break;
184 case PVR2_CVAL_INPUT_SVIDEO:
185 case PVR2_CVAL_INPUT_COMPOSITE:
186 tmp.type = V4L2_INPUT_TYPE_CAMERA;
187 break;
188 default:
189 return -EINVAL;
190 }
191
192 cnt = 0;
193 pvr2_ctrl_get_valname(cptr, val,
194 tmp.name, sizeof(tmp.name) - 1, &cnt);
195 tmp.name[cnt] = 0;
196
197 /* Don't bother with audioset, since this driver currently
198 always switches the audio whenever the video is
199 switched. */
200
201 /* Handling std is a tougher problem. It doesn't make
202 sense in cases where a device might be multi-standard.
203 We could just copy out the current value for the
204 standard, but it can change over time. For now just
205 leave it zero. */
206 *vi = tmp;
207 return 0;
208 }
209
210 static int pvr2_g_input(struct file *file, void *priv, unsigned int *i)
211 {
212 struct pvr2_v4l2_fh *fh = file->private_data;
213 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
214 unsigned int idx;
215 struct pvr2_ctrl *cptr;
216 int val;
217 int ret;
218
219 cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
220 val = 0;
221 ret = pvr2_ctrl_get_value(cptr, &val);
222 *i = 0;
223 for (idx = 0; idx < fh->input_cnt; idx++) {
224 if (fh->input_map[idx] == val) {
225 *i = idx;
226 break;
227 }
228 }
229 return ret;
230 }
231
232 static int pvr2_s_input(struct file *file, void *priv, unsigned int inp)
233 {
234 struct pvr2_v4l2_fh *fh = file->private_data;
235 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
236 int ret;
237
238 if (inp >= fh->input_cnt)
239 return -EINVAL;
240 ret = pvr2_ctrl_set_value(
241 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),
242 fh->input_map[inp]);
243 pvr2_hdw_commit_ctl(hdw);
244 return ret;
245 }
246
247 static int pvr2_enumaudio(struct file *file, void *priv, struct v4l2_audio *vin)
248 {
249 /* pkt: FIXME: We are returning one "fake" input here
250 which could very well be called "whatever_we_like".
251 This is for apps that want to see an audio input
252 just to feel comfortable, as well as to test if
253 it can do stereo or sth. There is actually no guarantee
254 that the actual audio input cannot change behind the app's
255 back, but most applications should not mind that either.
256
257 Hopefully, mplayer people will work with us on this (this
258 whole mess is to support mplayer pvr://), or Hans will come
259 up with a more standard way to say "we have inputs but we
260 don 't want you to change them independent of video" which
261 will sort this mess.
262 */
263
264 if (vin->index > 0)
265 return -EINVAL;
266 strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));
267 vin->capability = V4L2_AUDCAP_STEREO;
268 return 0;
269 }
270
271 static int pvr2_g_audio(struct file *file, void *priv, struct v4l2_audio *vin)
272 {
273 /* pkt: FIXME: see above comment (VIDIOC_ENUMAUDIO) */
274 vin->index = 0;
275 strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));
276 vin->capability = V4L2_AUDCAP_STEREO;
277 return 0;
278 }
279
280 static int pvr2_s_audio(struct file *file, void *priv, const struct v4l2_audio *vout)
281 {
282 if (vout->index)
283 return -EINVAL;
284 return 0;
285 }
286
287 static int pvr2_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
288 {
289 struct pvr2_v4l2_fh *fh = file->private_data;
290 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
291
292 if (vt->index != 0)
293 return -EINVAL; /* Only answer for the 1st tuner */
294
295 pvr2_hdw_execute_tuner_poll(hdw);
296 return pvr2_hdw_get_tuner_status(hdw, vt);
297 }
298
299 static int pvr2_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt)
300 {
301 struct pvr2_v4l2_fh *fh = file->private_data;
302 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
303 int ret;
304
305 if (vt->index != 0)
306 return -EINVAL;
307
308 ret = pvr2_ctrl_set_value(
309 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_AUDIOMODE),
310 vt->audmode);
311 pvr2_hdw_commit_ctl(hdw);
312 return ret;
313 }
314
315 static int pvr2_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf)
316 {
317 struct pvr2_v4l2_fh *fh = file->private_data;
318 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
319 unsigned long fv;
320 struct v4l2_tuner vt;
321 int cur_input;
322 struct pvr2_ctrl *ctrlp;
323 int ret;
324
325 ret = pvr2_hdw_get_tuner_status(hdw, &vt);
326 if (ret != 0)
327 return ret;
328 ctrlp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
329 ret = pvr2_ctrl_get_value(ctrlp, &cur_input);
330 if (ret != 0)
331 return ret;
332 if (vf->type == V4L2_TUNER_RADIO) {
333 if (cur_input != PVR2_CVAL_INPUT_RADIO)
334 pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_RADIO);
335 } else {
336 if (cur_input == PVR2_CVAL_INPUT_RADIO)
337 pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_TV);
338 }
339 fv = vf->frequency;
340 if (vt.capability & V4L2_TUNER_CAP_LOW)
341 fv = (fv * 125) / 2;
342 else
343 fv = fv * 62500;
344 ret = pvr2_ctrl_set_value(
345 pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv);
346 pvr2_hdw_commit_ctl(hdw);
347 return ret;
348 }
349
350 static int pvr2_g_frequency(struct file *file, void *priv, struct v4l2_frequency *vf)
351 {
352 struct pvr2_v4l2_fh *fh = file->private_data;
353 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
354 int val = 0;
355 int cur_input;
356 struct v4l2_tuner vt;
357 int ret;
358
359 ret = pvr2_hdw_get_tuner_status(hdw, &vt);
360 if (ret != 0)
361 return ret;
362 ret = pvr2_ctrl_get_value(
363 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_FREQUENCY),
364 &val);
365 if (ret != 0)
366 return ret;
367 pvr2_ctrl_get_value(
368 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),
369 &cur_input);
370 if (cur_input == PVR2_CVAL_INPUT_RADIO)
371 vf->type = V4L2_TUNER_RADIO;
372 else
373 vf->type = V4L2_TUNER_ANALOG_TV;
374 if (vt.capability & V4L2_TUNER_CAP_LOW)
375 val = (val * 2) / 125;
376 else
377 val /= 62500;
378 vf->frequency = val;
379 return 0;
380 }
381
382 static int pvr2_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *fd)
383 {
384 /* Only one format is supported: MPEG. */
385 if (fd->index)
386 return -EINVAL;
387
388 fd->pixelformat = V4L2_PIX_FMT_MPEG;
389 return 0;
390 }
391
392 static int pvr2_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
393 {
394 struct pvr2_v4l2_fh *fh = file->private_data;
395 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
396 int val;
397
398 memcpy(vf, &pvr_format[PVR_FORMAT_PIX], sizeof(struct v4l2_format));
399 val = 0;
400 pvr2_ctrl_get_value(
401 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES),
402 &val);
403 vf->fmt.pix.width = val;
404 val = 0;
405 pvr2_ctrl_get_value(
406 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES),
407 &val);
408 vf->fmt.pix.height = val;
409 return 0;
410 }
411
412 static int pvr2_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
413 {
414 struct pvr2_v4l2_fh *fh = file->private_data;
415 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
416 int lmin, lmax, ldef;
417 struct pvr2_ctrl *hcp, *vcp;
418 int h = vf->fmt.pix.height;
419 int w = vf->fmt.pix.width;
420
421 hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);
422 vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);
423
424 lmin = pvr2_ctrl_get_min(hcp);
425 lmax = pvr2_ctrl_get_max(hcp);
426 pvr2_ctrl_get_def(hcp, &ldef);
427 if (w == -1)
428 w = ldef;
429 else if (w < lmin)
430 w = lmin;
431 else if (w > lmax)
432 w = lmax;
433 lmin = pvr2_ctrl_get_min(vcp);
434 lmax = pvr2_ctrl_get_max(vcp);
435 pvr2_ctrl_get_def(vcp, &ldef);
436 if (h == -1)
437 h = ldef;
438 else if (h < lmin)
439 h = lmin;
440 else if (h > lmax)
441 h = lmax;
442
443 memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
444 sizeof(struct v4l2_format));
445 vf->fmt.pix.width = w;
446 vf->fmt.pix.height = h;
447 return 0;
448 }
449
450 static int pvr2_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
451 {
452 struct pvr2_v4l2_fh *fh = file->private_data;
453 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
454 struct pvr2_ctrl *hcp, *vcp;
455 int ret = pvr2_try_fmt_vid_cap(file, fh, vf);
456
457 if (ret)
458 return ret;
459 hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);
460 vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);
461 pvr2_ctrl_set_value(hcp, vf->fmt.pix.width);
462 pvr2_ctrl_set_value(vcp, vf->fmt.pix.height);
463 pvr2_hdw_commit_ctl(hdw);
464 return 0;
465 }
466
467 static int pvr2_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
468 {
469 struct pvr2_v4l2_fh *fh = file->private_data;
470 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
471 struct pvr2_v4l2_dev *pdi = fh->pdi;
472 int ret;
473
474 if (!fh->pdi->stream) {
475 /* No stream defined for this node. This means
476 that we're not currently allowed to stream from
477 this node. */
478 return -EPERM;
479 }
480 ret = pvr2_hdw_set_stream_type(hdw, pdi->config);
481 if (ret < 0)
482 return ret;
483 return pvr2_hdw_set_streaming(hdw, !0);
484 }
485
486 static int pvr2_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
487 {
488 struct pvr2_v4l2_fh *fh = file->private_data;
489 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
490
491 if (!fh->pdi->stream) {
492 /* No stream defined for this node. This means
493 that we're not currently allowed to stream from
494 this node. */
495 return -EPERM;
496 }
497 return pvr2_hdw_set_streaming(hdw, 0);
498 }
499
500 static int pvr2_queryctrl(struct file *file, void *priv,
501 struct v4l2_queryctrl *vc)
502 {
503 struct pvr2_v4l2_fh *fh = file->private_data;
504 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
505 struct pvr2_ctrl *cptr;
506 int val;
507
508 if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
509 cptr = pvr2_hdw_get_ctrl_nextv4l(
510 hdw, (vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL));
511 if (cptr)
512 vc->id = pvr2_ctrl_get_v4lid(cptr);
513 } else {
514 cptr = pvr2_hdw_get_ctrl_v4l(hdw, vc->id);
515 }
516 if (!cptr) {
517 pvr2_trace(PVR2_TRACE_V4LIOCTL,
518 "QUERYCTRL id=0x%x not implemented here",
519 vc->id);
520 return -EINVAL;
521 }
522
523 pvr2_trace(PVR2_TRACE_V4LIOCTL,
524 "QUERYCTRL id=0x%x mapping name=%s (%s)",
525 vc->id, pvr2_ctrl_get_name(cptr),
526 pvr2_ctrl_get_desc(cptr));
527 strscpy(vc->name, pvr2_ctrl_get_desc(cptr), sizeof(vc->name));
528 vc->flags = pvr2_ctrl_get_v4lflags(cptr);
529 pvr2_ctrl_get_def(cptr, &val);
530 vc->default_value = val;
531 switch (pvr2_ctrl_get_type(cptr)) {
532 case pvr2_ctl_enum:
533 vc->type = V4L2_CTRL_TYPE_MENU;
534 vc->minimum = 0;
535 vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1;
536 vc->step = 1;
537 break;
538 case pvr2_ctl_bool:
539 vc->type = V4L2_CTRL_TYPE_BOOLEAN;
540 vc->minimum = 0;
541 vc->maximum = 1;
542 vc->step = 1;
543 break;
544 case pvr2_ctl_int:
545 vc->type = V4L2_CTRL_TYPE_INTEGER;
546 vc->minimum = pvr2_ctrl_get_min(cptr);
547 vc->maximum = pvr2_ctrl_get_max(cptr);
548 vc->step = 1;
549 break;
550 default:
551 pvr2_trace(PVR2_TRACE_V4LIOCTL,
552 "QUERYCTRL id=0x%x name=%s not mappable",
553 vc->id, pvr2_ctrl_get_name(cptr));
554 return -EINVAL;
555 }
556 return 0;
557 }
558
559 static int pvr2_querymenu(struct file *file, void *priv, struct v4l2_querymenu *vm)
560 {
561 struct pvr2_v4l2_fh *fh = file->private_data;
562 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
563 unsigned int cnt = 0;
564 int ret;
565
566 ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw, vm->id),
567 vm->index,
568 vm->name, sizeof(vm->name) - 1,
569 &cnt);
570 vm->name[cnt] = 0;
571 return ret;
572 }
573
574 static int pvr2_g_ctrl(struct file *file, void *priv, struct v4l2_control *vc)
575 {
576 struct pvr2_v4l2_fh *fh = file->private_data;
577 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
578 int val = 0;
579 int ret;
580
581 ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),
582 &val);
583 vc->value = val;
584 return ret;
585 }
586
587 static int pvr2_s_ctrl(struct file *file, void *priv, struct v4l2_control *vc)
588 {
589 struct pvr2_v4l2_fh *fh = file->private_data;
590 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
591 int ret;
592
593 ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),
594 vc->value);
595 pvr2_hdw_commit_ctl(hdw);
596 return ret;
597 }
598
599 static int pvr2_g_ext_ctrls(struct file *file, void *priv,
600 struct v4l2_ext_controls *ctls)
601 {
602 struct pvr2_v4l2_fh *fh = file->private_data;
603 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
604 struct v4l2_ext_control *ctrl;
605 struct pvr2_ctrl *cptr;
606 unsigned int idx;
607 int val;
608 int ret;
609
610 ret = 0;
611 for (idx = 0; idx < ctls->count; idx++) {
612 ctrl = ctls->controls + idx;
613 cptr = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);
614 if (cptr) {
615 if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL)
616 pvr2_ctrl_get_def(cptr, &val);
617 else
618 ret = pvr2_ctrl_get_value(cptr, &val);
619 } else
620 ret = -EINVAL;
621
622 if (ret) {
623 ctls->error_idx = idx;
624 return ret;
625 }
626 /* Ensure that if read as a 64 bit value, the user
627 will still get a hopefully sane value */
628 ctrl->value64 = 0;
629 ctrl->value = val;
630 }
631 return 0;
632 }
633
634 static int pvr2_s_ext_ctrls(struct file *file, void *priv,
635 struct v4l2_ext_controls *ctls)
636 {
637 struct pvr2_v4l2_fh *fh = file->private_data;
638 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
639 struct v4l2_ext_control *ctrl;
640 unsigned int idx;
641 int ret;
642
643 /* Default value cannot be changed */
644 if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL)
645 return -EINVAL;
646
647 ret = 0;
648 for (idx = 0; idx < ctls->count; idx++) {
649 ctrl = ctls->controls + idx;
650 ret = pvr2_ctrl_set_value(
651 pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id),
652 ctrl->value);
653 if (ret) {
654 ctls->error_idx = idx;
655 goto commit;
656 }
657 }
658 commit:
659 pvr2_hdw_commit_ctl(hdw);
660 return ret;
661 }
662
663 static int pvr2_try_ext_ctrls(struct file *file, void *priv,
664 struct v4l2_ext_controls *ctls)
665 {
666 struct pvr2_v4l2_fh *fh = file->private_data;
667 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
668 struct v4l2_ext_control *ctrl;
669 struct pvr2_ctrl *pctl;
670 unsigned int idx;
671
672 /* For the moment just validate that the requested control
673 actually exists. */
674 for (idx = 0; idx < ctls->count; idx++) {
675 ctrl = ctls->controls + idx;
676 pctl = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);
677 if (!pctl) {
678 ctls->error_idx = idx;
679 return -EINVAL;
680 }
681 }
682 return 0;
683 }
684
685 static int pvr2_g_pixelaspect(struct file *file, void *priv,
686 int type, struct v4l2_fract *f)
687 {
688 struct pvr2_v4l2_fh *fh = file->private_data;
689 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
690 struct v4l2_cropcap cap = { .type = type };
691 int ret;
692
693 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
694 return -EINVAL;
695 ret = pvr2_hdw_get_cropcap(hdw, &cap);
696 if (!ret)
697 *f = cap.pixelaspect;
698 return ret;
699 }
700
701 static int pvr2_g_selection(struct file *file, void *priv,
702 struct v4l2_selection *sel)
703 {
704 struct pvr2_v4l2_fh *fh = file->private_data;
705 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
706 struct v4l2_cropcap cap;
707 int val = 0;
708 int ret;
709
710 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
711 return -EINVAL;
712
713 cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
714
715 switch (sel->target) {
716 case V4L2_SEL_TGT_CROP:
717 ret = pvr2_ctrl_get_value(
718 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL), &val);
719 if (ret != 0)
720 return -EINVAL;
721 sel->r.left = val;
722 ret = pvr2_ctrl_get_value(
723 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT), &val);
724 if (ret != 0)
725 return -EINVAL;
726 sel->r.top = val;
727 ret = pvr2_ctrl_get_value(
728 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW), &val);
729 if (ret != 0)
730 return -EINVAL;
731 sel->r.width = val;
732 ret = pvr2_ctrl_get_value(
733 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH), &val);
734 if (ret != 0)
735 return -EINVAL;
736 sel->r.height = val;
737 break;
738 case V4L2_SEL_TGT_CROP_DEFAULT:
739 ret = pvr2_hdw_get_cropcap(hdw, &cap);
740 sel->r = cap.defrect;
741 break;
742 case V4L2_SEL_TGT_CROP_BOUNDS:
743 ret = pvr2_hdw_get_cropcap(hdw, &cap);
744 sel->r = cap.bounds;
745 break;
746 default:
747 return -EINVAL;
748 }
749 return ret;
750 }
751
752 static int pvr2_s_selection(struct file *file, void *priv,
753 struct v4l2_selection *sel)
754 {
755 struct pvr2_v4l2_fh *fh = file->private_data;
756 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
757 int ret;
758
759 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
760 sel->target != V4L2_SEL_TGT_CROP)
761 return -EINVAL;
762 ret = pvr2_ctrl_set_value(
763 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL),
764 sel->r.left);
765 if (ret != 0)
766 goto commit;
767 ret = pvr2_ctrl_set_value(
768 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT),
769 sel->r.top);
770 if (ret != 0)
771 goto commit;
772 ret = pvr2_ctrl_set_value(
773 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW),
774 sel->r.width);
775 if (ret != 0)
776 goto commit;
777 ret = pvr2_ctrl_set_value(
778 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH),
779 sel->r.height);
780 commit:
781 pvr2_hdw_commit_ctl(hdw);
782 return ret;
783 }
784
785 static int pvr2_log_status(struct file *file, void *priv)
786 {
787 struct pvr2_v4l2_fh *fh = file->private_data;
788 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
789
790 pvr2_hdw_trigger_module_log(hdw);
791 return 0;
792 }
793
794 static const struct v4l2_ioctl_ops pvr2_ioctl_ops = {
795 .vidioc_querycap = pvr2_querycap,
796 .vidioc_s_audio = pvr2_s_audio,
797 .vidioc_g_audio = pvr2_g_audio,
798 .vidioc_enumaudio = pvr2_enumaudio,
799 .vidioc_enum_input = pvr2_enum_input,
800 .vidioc_g_pixelaspect = pvr2_g_pixelaspect,
801 .vidioc_s_selection = pvr2_s_selection,
802 .vidioc_g_selection = pvr2_g_selection,
803 .vidioc_g_input = pvr2_g_input,
804 .vidioc_s_input = pvr2_s_input,
805 .vidioc_g_frequency = pvr2_g_frequency,
806 .vidioc_s_frequency = pvr2_s_frequency,
807 .vidioc_s_tuner = pvr2_s_tuner,
808 .vidioc_g_tuner = pvr2_g_tuner,
809 .vidioc_g_std = pvr2_g_std,
810 .vidioc_s_std = pvr2_s_std,
811 .vidioc_querystd = pvr2_querystd,
812 .vidioc_log_status = pvr2_log_status,
813 .vidioc_enum_fmt_vid_cap = pvr2_enum_fmt_vid_cap,
814 .vidioc_g_fmt_vid_cap = pvr2_g_fmt_vid_cap,
815 .vidioc_s_fmt_vid_cap = pvr2_s_fmt_vid_cap,
816 .vidioc_try_fmt_vid_cap = pvr2_try_fmt_vid_cap,
817 .vidioc_streamon = pvr2_streamon,
818 .vidioc_streamoff = pvr2_streamoff,
819 .vidioc_queryctrl = pvr2_queryctrl,
820 .vidioc_querymenu = pvr2_querymenu,
821 .vidioc_g_ctrl = pvr2_g_ctrl,
822 .vidioc_s_ctrl = pvr2_s_ctrl,
823 .vidioc_g_ext_ctrls = pvr2_g_ext_ctrls,
824 .vidioc_s_ext_ctrls = pvr2_s_ext_ctrls,
825 .vidioc_try_ext_ctrls = pvr2_try_ext_ctrls,
826 };
827
828 static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
829 {
830 struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw;
831 enum pvr2_config cfg = dip->config;
832 char msg[80];
833 unsigned int mcnt;
834
835 /* Construct the unregistration message *before* we actually
836 perform the unregistration step. By doing it this way we don't
837 have to worry about potentially touching deleted resources. */
838 mcnt = scnprintf(msg, sizeof(msg) - 1,
839 "pvrusb2: unregistered device %s [%s]",
840 video_device_node_name(&dip->devbase),
841 pvr2_config_get_name(cfg));
842 msg[mcnt] = 0;
843
844 pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1);
845
846 /* Paranoia */
847 dip->v4lp = NULL;
848 dip->stream = NULL;
849
850 /* Actual deallocation happens later when all internal references
851 are gone. */
852 video_unregister_device(&dip->devbase);
853
854 pr_info("%s\n", msg);
855
856 }
857
858
859 static void pvr2_v4l2_dev_disassociate_parent(struct pvr2_v4l2_dev *dip)
860 {
861 if (!dip) return;
862 if (!dip->devbase.v4l2_dev->dev) return;
863 dip->devbase.v4l2_dev->dev = NULL;
864 device_move(&dip->devbase.dev, NULL, DPM_ORDER_NONE);
865 }
866
867
868 static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
869 {
870 if (vp->dev_video) {
871 pvr2_v4l2_dev_destroy(vp->dev_video);
872 vp->dev_video = NULL;
873 }
874 if (vp->dev_radio) {
875 pvr2_v4l2_dev_destroy(vp->dev_radio);
876 vp->dev_radio = NULL;
877 }
878
879 pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);
880 pvr2_channel_done(&vp->channel);
881 kfree(vp);
882 }
883
884
885 static void pvr2_video_device_release(struct video_device *vdev)
886 {
887 struct pvr2_v4l2_dev *dev;
888 dev = container_of(vdev,struct pvr2_v4l2_dev,devbase);
889 kfree(dev);
890 }
891
892
893 static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
894 {
895 struct pvr2_v4l2 *vp;
896 vp = container_of(chp,struct pvr2_v4l2,channel);
897 if (!vp->channel.mc_head->disconnect_flag) return;
898 pvr2_v4l2_dev_disassociate_parent(vp->dev_video);
899 pvr2_v4l2_dev_disassociate_parent(vp->dev_radio);
900 if (!list_empty(&vp->dev_video->devbase.fh_list) ||
901 (vp->dev_radio &&
902 !list_empty(&vp->dev_radio->devbase.fh_list))) {
903 pvr2_trace(PVR2_TRACE_STRUCT,
904 "pvr2_v4l2 internal_check exit-empty id=%p", vp);
905 return;
906 }
907 pvr2_v4l2_destroy_no_lock(vp);
908 }
909
910
911 static int pvr2_v4l2_release(struct file *file)
912 {
913 struct pvr2_v4l2_fh *fhp = file->private_data;
914 struct pvr2_v4l2 *vp = fhp->pdi->v4lp;
915 struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;
916
917 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");
918
919 if (fhp->rhp) {
920 struct pvr2_stream *sp;
921 pvr2_hdw_set_streaming(hdw,0);
922 sp = pvr2_ioread_get_stream(fhp->rhp);
923 if (sp) pvr2_stream_set_callback(sp,NULL,NULL);
924 pvr2_ioread_destroy(fhp->rhp);
925 fhp->rhp = NULL;
926 }
927
928 v4l2_fh_del(&fhp->fh);
929 v4l2_fh_exit(&fhp->fh);
930 file->private_data = NULL;
931
932 pvr2_channel_done(&fhp->channel);
933 pvr2_trace(PVR2_TRACE_STRUCT,
934 "Destroying pvr_v4l2_fh id=%p",fhp);
935 if (fhp->input_map) {
936 kfree(fhp->input_map);
937 fhp->input_map = NULL;
938 }
939 kfree(fhp);
940 if (vp->channel.mc_head->disconnect_flag &&
941 list_empty(&vp->dev_video->devbase.fh_list) &&
942 (!vp->dev_radio ||
943 list_empty(&vp->dev_radio->devbase.fh_list))) {
944 pvr2_v4l2_destroy_no_lock(vp);
945 }
946 return 0;
947 }
948
949
950 static int pvr2_v4l2_open(struct file *file)
951 {
952 struct pvr2_v4l2_dev *dip; /* Our own context pointer */
953 struct pvr2_v4l2_fh *fhp;
954 struct pvr2_v4l2 *vp;
955 struct pvr2_hdw *hdw;
956 unsigned int input_mask = 0;
957 unsigned int input_cnt,idx;
958 int ret = 0;
959
960 dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
961
962 vp = dip->v4lp;
963 hdw = vp->channel.hdw;
964
965 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open");
966
967 if (!pvr2_hdw_dev_ok(hdw)) {
968 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,
969 "pvr2_v4l2_open: hardware not ready");
970 return -EIO;
971 }
972
973 fhp = kzalloc(sizeof(*fhp),GFP_KERNEL);
974 if (!fhp) {
975 return -ENOMEM;
976 }
977
978 v4l2_fh_init(&fhp->fh, &dip->devbase);
979 init_waitqueue_head(&fhp->wait_data);
980 fhp->pdi = dip;
981
982 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
983 pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
984
985 if (dip->v4l_type == VFL_TYPE_RADIO) {
986 /* Opening device as a radio, legal input selection subset
987 is just the radio. */
988 input_mask = (1 << PVR2_CVAL_INPUT_RADIO);
989 } else {
990 /* Opening the main V4L device, legal input selection
991 subset includes all analog inputs. */
992 input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) |
993 (1 << PVR2_CVAL_INPUT_TV) |
994 (1 << PVR2_CVAL_INPUT_COMPOSITE) |
995 (1 << PVR2_CVAL_INPUT_SVIDEO));
996 }
997 ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask);
998 if (ret) {
999 pvr2_channel_done(&fhp->channel);
1000 pvr2_trace(PVR2_TRACE_STRUCT,
1001 "Destroying pvr_v4l2_fh id=%p (input mask error)",
1002 fhp);
1003 v4l2_fh_exit(&fhp->fh);
1004 kfree(fhp);
1005 return ret;
1006 }
1007
1008 input_mask &= pvr2_hdw_get_input_available(hdw);
1009 input_cnt = 0;
1010 for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
1011 if (input_mask & (1UL << idx)) input_cnt++;
1012 }
1013 fhp->input_cnt = input_cnt;
1014 fhp->input_map = kzalloc(input_cnt,GFP_KERNEL);
1015 if (!fhp->input_map) {
1016 pvr2_channel_done(&fhp->channel);
1017 pvr2_trace(PVR2_TRACE_STRUCT,
1018 "Destroying pvr_v4l2_fh id=%p (input map failure)",
1019 fhp);
1020 v4l2_fh_exit(&fhp->fh);
1021 kfree(fhp);
1022 return -ENOMEM;
1023 }
1024 input_cnt = 0;
1025 for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
1026 if (!(input_mask & (1UL << idx))) continue;
1027 fhp->input_map[input_cnt++] = idx;
1028 }
1029
1030 fhp->file = file;
1031 file->private_data = fhp;
1032
1033 fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
1034 v4l2_fh_add(&fhp->fh);
1035
1036 return 0;
1037 }
1038
1039
1040 static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp)
1041 {
1042 wake_up(&fhp->wait_data);
1043 }
1044
1045 static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
1046 {
1047 int ret;
1048 struct pvr2_stream *sp;
1049 struct pvr2_hdw *hdw;
1050 if (fh->rhp) return 0;
1051
1052 if (!fh->pdi->stream) {
1053 /* No stream defined for this node. This means that we're
1054 not currently allowed to stream from this node. */
1055 return -EPERM;
1056 }
1057
1058 /* First read() attempt. Try to claim the stream and start
1059 it... */
1060 if ((ret = pvr2_channel_claim_stream(&fh->channel,
1061 fh->pdi->stream)) != 0) {
1062 /* Someone else must already have it */
1063 return ret;
1064 }
1065
1066 fh->rhp = pvr2_channel_create_mpeg_stream(fh->pdi->stream);
1067 if (!fh->rhp) {
1068 pvr2_channel_claim_stream(&fh->channel,NULL);
1069 return -ENOMEM;
1070 }
1071
1072 hdw = fh->channel.mc_head->hdw;
1073 sp = fh->pdi->stream->stream;
1074 pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh);
1075 pvr2_hdw_set_stream_type(hdw,fh->pdi->config);
1076 if ((ret = pvr2_hdw_set_streaming(hdw,!0)) < 0) return ret;
1077 return pvr2_ioread_set_enabled(fh->rhp,!0);
1078 }
1079
1080
1081 static ssize_t pvr2_v4l2_read(struct file *file,
1082 char __user *buff, size_t count, loff_t *ppos)
1083 {
1084 struct pvr2_v4l2_fh *fh = file->private_data;
1085 int ret;
1086
1087 if (fh->fw_mode_flag) {
1088 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
1089 char *tbuf;
1090 int c1,c2;
1091 int tcnt = 0;
1092 unsigned int offs = *ppos;
1093
1094 tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL);
1095 if (!tbuf) return -ENOMEM;
1096
1097 while (count) {
1098 c1 = count;
1099 if (c1 > PAGE_SIZE) c1 = PAGE_SIZE;
1100 c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1);
1101 if (c2 < 0) {
1102 tcnt = c2;
1103 break;
1104 }
1105 if (!c2) break;
1106 if (copy_to_user(buff,tbuf,c2)) {
1107 tcnt = -EFAULT;
1108 break;
1109 }
1110 offs += c2;
1111 tcnt += c2;
1112 buff += c2;
1113 count -= c2;
1114 *ppos += c2;
1115 }
1116 kfree(tbuf);
1117 return tcnt;
1118 }
1119
1120 if (!fh->rhp) {
1121 ret = pvr2_v4l2_iosetup(fh);
1122 if (ret) {
1123 return ret;
1124 }
1125 }
1126
1127 for (;;) {
1128 ret = pvr2_ioread_read(fh->rhp,buff,count);
1129 if (ret >= 0) break;
1130 if (ret != -EAGAIN) break;
1131 if (file->f_flags & O_NONBLOCK) break;
1132 /* Doing blocking I/O. Wait here. */
1133 ret = wait_event_interruptible(
1134 fh->wait_data,
1135 pvr2_ioread_avail(fh->rhp) >= 0);
1136 if (ret < 0) break;
1137 }
1138
1139 return ret;
1140 }
1141
1142
1143 static __poll_t pvr2_v4l2_poll(struct file *file, poll_table *wait)
1144 {
1145 __poll_t mask = 0;
1146 struct pvr2_v4l2_fh *fh = file->private_data;
1147 int ret;
1148
1149 if (fh->fw_mode_flag) {
1150 mask |= EPOLLIN | EPOLLRDNORM;
1151 return mask;
1152 }
1153
1154 if (!fh->rhp) {
1155 ret = pvr2_v4l2_iosetup(fh);
1156 if (ret) return EPOLLERR;
1157 }
1158
1159 poll_wait(file,&fh->wait_data,wait);
1160
1161 if (pvr2_ioread_avail(fh->rhp) >= 0) {
1162 mask |= EPOLLIN | EPOLLRDNORM;
1163 }
1164
1165 return mask;
1166 }
1167
1168
1169 static const struct v4l2_file_operations vdev_fops = {
1170 .owner = THIS_MODULE,
1171 .open = pvr2_v4l2_open,
1172 .release = pvr2_v4l2_release,
1173 .read = pvr2_v4l2_read,
1174 .unlocked_ioctl = video_ioctl2,
1175 .poll = pvr2_v4l2_poll,
1176 };
1177
1178
1179 static const struct video_device vdev_template = {
1180 .fops = &vdev_fops,
1181 };
1182
1183
1184 static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
1185 struct pvr2_v4l2 *vp,
1186 int v4l_type)
1187 {
1188 int mindevnum;
1189 int unit_number;
1190 struct pvr2_hdw *hdw;
1191 int *nr_ptr = NULL;
1192 u32 caps = V4L2_CAP_TUNER | V4L2_CAP_READWRITE;
1193
1194 dip->v4lp = vp;
1195
1196 hdw = vp->channel.mc_head->hdw;
1197 dip->v4l_type = v4l_type;
1198 switch (v4l_type) {
1199 case VFL_TYPE_GRABBER:
1200 dip->stream = &vp->channel.mc_head->video_stream;
1201 dip->config = pvr2_config_mpeg;
1202 dip->minor_type = pvr2_v4l_type_video;
1203 nr_ptr = video_nr;
1204 caps |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO;
1205 if (!dip->stream) {
1206 pr_err(KBUILD_MODNAME
1207 ": Failed to set up pvrusb2 v4l video dev due to missing stream instance\n");
1208 return;
1209 }
1210 break;
1211 case VFL_TYPE_VBI:
1212 dip->config = pvr2_config_vbi;
1213 dip->minor_type = pvr2_v4l_type_vbi;
1214 nr_ptr = vbi_nr;
1215 caps |= V4L2_CAP_VBI_CAPTURE;
1216 break;
1217 case VFL_TYPE_RADIO:
1218 dip->stream = &vp->channel.mc_head->video_stream;
1219 dip->config = pvr2_config_mpeg;
1220 dip->minor_type = pvr2_v4l_type_radio;
1221 nr_ptr = radio_nr;
1222 caps |= V4L2_CAP_RADIO;
1223 break;
1224 default:
1225 /* Bail out (this should be impossible) */
1226 pr_err(KBUILD_MODNAME ": Failed to set up pvrusb2 v4l dev due to unrecognized config\n");
1227 return;
1228 }
1229
1230 dip->devbase = vdev_template;
1231 dip->devbase.release = pvr2_video_device_release;
1232 dip->devbase.ioctl_ops = &pvr2_ioctl_ops;
1233 dip->devbase.device_caps = caps;
1234 {
1235 int val;
1236 pvr2_ctrl_get_value(
1237 pvr2_hdw_get_ctrl_by_id(hdw,
1238 PVR2_CID_STDAVAIL), &val);
1239 dip->devbase.tvnorms = (v4l2_std_id)val;
1240 }
1241
1242 mindevnum = -1;
1243 unit_number = pvr2_hdw_get_unit_number(hdw);
1244 if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) {
1245 mindevnum = nr_ptr[unit_number];
1246 }
1247 pvr2_hdw_set_v4l2_dev(hdw, &dip->devbase);
1248 if ((video_register_device(&dip->devbase,
1249 dip->v4l_type, mindevnum) < 0) &&
1250 (video_register_device(&dip->devbase,
1251 dip->v4l_type, -1) < 0)) {
1252 pr_err(KBUILD_MODNAME
1253 ": Failed to register pvrusb2 v4l device\n");
1254 }
1255
1256 pr_info("pvrusb2: registered device %s [%s]\n",
1257 video_device_node_name(&dip->devbase),
1258 pvr2_config_get_name(dip->config));
1259
1260 pvr2_hdw_v4l_store_minor_number(hdw,
1261 dip->minor_type,dip->devbase.minor);
1262 }
1263
1264
1265 struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
1266 {
1267 struct pvr2_v4l2 *vp;
1268
1269 vp = kzalloc(sizeof(*vp),GFP_KERNEL);
1270 if (!vp) return vp;
1271 pvr2_channel_init(&vp->channel,mnp);
1272 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp);
1273
1274 vp->channel.check_func = pvr2_v4l2_internal_check;
1275
1276 /* register streams */
1277 vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL);
1278 if (!vp->dev_video) goto fail;
1279 pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER);
1280 if (pvr2_hdw_get_input_available(vp->channel.mc_head->hdw) &
1281 (1 << PVR2_CVAL_INPUT_RADIO)) {
1282 vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL);
1283 if (!vp->dev_radio) goto fail;
1284 pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO);
1285 }
1286
1287 return vp;
1288 fail:
1289 pvr2_trace(PVR2_TRACE_STRUCT,"Failure creating pvr2_v4l2 id=%p",vp);
1290 pvr2_v4l2_destroy_no_lock(vp);
1291 return NULL;
1292 }
Linux with added FPC-III support