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treewide: fix a few typos in comments
[zen-stable.git] / drivers / media / video / saa7164 / saa7164-vbi.c
blobbc1fcedba874b87ce7b384e9a9775928e1520753
1 /*
2 * Driver for the NXP SAA7164 PCIe bridge
3 *
4 * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 *
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., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #include "saa7164.h"
23
24 static struct saa7164_tvnorm saa7164_tvnorms[] = {
25 {
26 .name = "NTSC-M",
27 .id = V4L2_STD_NTSC_M,
28 }, {
29 .name = "NTSC-JP",
30 .id = V4L2_STD_NTSC_M_JP,
31 }
32 };
33
34 static const u32 saa7164_v4l2_ctrls[] = {
35 0
36 };
37
38 /* Take the encoder configuration from the port struct and
39 * flush it to the hardware.
40 */
41 static void saa7164_vbi_configure(struct saa7164_port *port)
42 {
43 struct saa7164_dev *dev = port->dev;
44 dprintk(DBGLVL_VBI, "%s()\n", __func__);
45
46 port->vbi_params.width = port->width;
47 port->vbi_params.height = port->height;
48 port->vbi_params.is_50hz =
49 (port->encodernorm.id & V4L2_STD_625_50) != 0;
50
51 /* Set up the DIF (enable it) for analog mode by default */
52 saa7164_api_initialize_dif(port);
53
54 /* Configure the correct video standard */
55 #if 0
56 saa7164_api_configure_dif(port, port->encodernorm.id);
57 #endif
58
59 #if 0
60 /* Ensure the audio decoder is correct configured */
61 saa7164_api_set_audio_std(port);
62 #endif
63 dprintk(DBGLVL_VBI, "%s() ends\n", __func__);
64 }
65
66 static int saa7164_vbi_buffers_dealloc(struct saa7164_port *port)
67 {
68 struct list_head *c, *n, *p, *q, *l, *v;
69 struct saa7164_dev *dev = port->dev;
70 struct saa7164_buffer *buf;
71 struct saa7164_user_buffer *ubuf;
72
73 /* Remove any allocated buffers */
74 mutex_lock(&port->dmaqueue_lock);
75
76 dprintk(DBGLVL_VBI, "%s(port=%d) dmaqueue\n", __func__, port->nr);
77 list_for_each_safe(c, n, &port->dmaqueue.list) {
78 buf = list_entry(c, struct saa7164_buffer, list);
79 list_del(c);
80 saa7164_buffer_dealloc(buf);
81 }
82
83 dprintk(DBGLVL_VBI, "%s(port=%d) used\n", __func__, port->nr);
84 list_for_each_safe(p, q, &port->list_buf_used.list) {
85 ubuf = list_entry(p, struct saa7164_user_buffer, list);
86 list_del(p);
87 saa7164_buffer_dealloc_user(ubuf);
88 }
89
90 dprintk(DBGLVL_VBI, "%s(port=%d) free\n", __func__, port->nr);
91 list_for_each_safe(l, v, &port->list_buf_free.list) {
92 ubuf = list_entry(l, struct saa7164_user_buffer, list);
93 list_del(l);
94 saa7164_buffer_dealloc_user(ubuf);
95 }
96
97 mutex_unlock(&port->dmaqueue_lock);
98 dprintk(DBGLVL_VBI, "%s(port=%d) done\n", __func__, port->nr);
99
100 return 0;
101 }
102
103 /* Dynamic buffer switch at vbi start time */
104 static int saa7164_vbi_buffers_alloc(struct saa7164_port *port)
105 {
106 struct saa7164_dev *dev = port->dev;
107 struct saa7164_buffer *buf;
108 struct saa7164_user_buffer *ubuf;
109 struct tmHWStreamParameters *params = &port->hw_streamingparams;
110 int result = -ENODEV, i;
111 int len = 0;
112
113 dprintk(DBGLVL_VBI, "%s()\n", __func__);
114
115 /* TODO: NTSC SPECIFIC */
116 /* Init and establish defaults */
117 params->samplesperline = 1440;
118 params->numberoflines = 12;
119 params->numberoflines = 18;
120 params->pitch = 1600;
121 params->pitch = 1440;
122 params->numpagetables = 2 +
123 ((params->numberoflines * params->pitch) / PAGE_SIZE);
124 params->bitspersample = 8;
125 params->linethreshold = 0;
126 params->pagetablelistvirt = NULL;
127 params->pagetablelistphys = NULL;
128 params->numpagetableentries = port->hwcfg.buffercount;
129
130 /* Allocate the PCI resources, buffers (hard) */
131 for (i = 0; i < port->hwcfg.buffercount; i++) {
132 buf = saa7164_buffer_alloc(port,
133 params->numberoflines *
134 params->pitch);
135
136 if (!buf) {
137 printk(KERN_ERR "%s() failed "
138 "(errno = %d), unable to allocate buffer\n",
139 __func__, result);
140 result = -ENOMEM;
141 goto failed;
142 } else {
143
144 mutex_lock(&port->dmaqueue_lock);
145 list_add_tail(&buf->list, &port->dmaqueue.list);
146 mutex_unlock(&port->dmaqueue_lock);
147
148 }
149 }
150
151 /* Allocate some kernel buffers for copying
152 * to userpsace.
153 */
154 len = params->numberoflines * params->pitch;
155
156 if (vbi_buffers < 16)
157 vbi_buffers = 16;
158 if (vbi_buffers > 512)
159 vbi_buffers = 512;
160
161 for (i = 0; i < vbi_buffers; i++) {
162
163 ubuf = saa7164_buffer_alloc_user(dev, len);
164 if (ubuf) {
165 mutex_lock(&port->dmaqueue_lock);
166 list_add_tail(&ubuf->list, &port->list_buf_free.list);
167 mutex_unlock(&port->dmaqueue_lock);
168 }
169
170 }
171
172 result = 0;
173
174 failed:
175 return result;
176 }
177
178
179 static int saa7164_vbi_initialize(struct saa7164_port *port)
180 {
181 saa7164_vbi_configure(port);
182 return 0;
183 }
184
185 /* -- V4L2 --------------------------------------------------------- */
186 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
187 {
188 struct saa7164_vbi_fh *fh = file->private_data;
189 struct saa7164_port *port = fh->port;
190 struct saa7164_dev *dev = port->dev;
191 unsigned int i;
192
193 dprintk(DBGLVL_VBI, "%s(id=0x%x)\n", __func__, (u32)*id);
194
195 for (i = 0; i < ARRAY_SIZE(saa7164_tvnorms); i++) {
196 if (*id & saa7164_tvnorms[i].id)
197 break;
198 }
199 if (i == ARRAY_SIZE(saa7164_tvnorms))
200 return -EINVAL;
201
202 port->encodernorm = saa7164_tvnorms[i];
203
204 /* Update the audio decoder while is not running in
205 * auto detect mode.
206 */
207 saa7164_api_set_audio_std(port);
208
209 dprintk(DBGLVL_VBI, "%s(id=0x%x) OK\n", __func__, (u32)*id);
210
211 return 0;
212 }
213
214 static int vidioc_enum_input(struct file *file, void *priv,
215 struct v4l2_input *i)
216 {
217 int n;
218
219 char *inputs[] = { "tuner", "composite", "svideo", "aux",
220 "composite 2", "svideo 2", "aux 2" };
221
222 if (i->index >= 7)
223 return -EINVAL;
224
225 strcpy(i->name, inputs[i->index]);
226
227 if (i->index == 0)
228 i->type = V4L2_INPUT_TYPE_TUNER;
229 else
230 i->type = V4L2_INPUT_TYPE_CAMERA;
231
232 for (n = 0; n < ARRAY_SIZE(saa7164_tvnorms); n++)
233 i->std |= saa7164_tvnorms[n].id;
234
235 return 0;
236 }
237
238 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
239 {
240 struct saa7164_vbi_fh *fh = file->private_data;
241 struct saa7164_port *port = fh->port;
242 struct saa7164_dev *dev = port->dev;
243
244 if (saa7164_api_get_videomux(port) != SAA_OK)
245 return -EIO;
246
247 *i = (port->mux_input - 1);
248
249 dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, *i);
250
251 return 0;
252 }
253
254 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
255 {
256 struct saa7164_vbi_fh *fh = file->private_data;
257 struct saa7164_port *port = fh->port;
258 struct saa7164_dev *dev = port->dev;
259
260 dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, i);
261
262 if (i >= 7)
263 return -EINVAL;
264
265 port->mux_input = i + 1;
266
267 if (saa7164_api_set_videomux(port) != SAA_OK)
268 return -EIO;
269
270 return 0;
271 }
272
273 static int vidioc_g_tuner(struct file *file, void *priv,
274 struct v4l2_tuner *t)
275 {
276 struct saa7164_vbi_fh *fh = file->private_data;
277 struct saa7164_port *port = fh->port;
278 struct saa7164_dev *dev = port->dev;
279
280 if (0 != t->index)
281 return -EINVAL;
282
283 strcpy(t->name, "tuner");
284 t->type = V4L2_TUNER_ANALOG_TV;
285 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
286
287 dprintk(DBGLVL_VBI, "VIDIOC_G_TUNER: tuner type %d\n", t->type);
288
289 return 0;
290 }
291
292 static int vidioc_s_tuner(struct file *file, void *priv,
293 struct v4l2_tuner *t)
294 {
295 /* Update the A/V core */
296 return 0;
297 }
298
299 static int vidioc_g_frequency(struct file *file, void *priv,
300 struct v4l2_frequency *f)
301 {
302 struct saa7164_vbi_fh *fh = file->private_data;
303 struct saa7164_port *port = fh->port;
304
305 f->type = V4L2_TUNER_ANALOG_TV;
306 f->frequency = port->freq;
307
308 return 0;
309 }
310
311 static int vidioc_s_frequency(struct file *file, void *priv,
312 struct v4l2_frequency *f)
313 {
314 struct saa7164_vbi_fh *fh = file->private_data;
315 struct saa7164_port *port = fh->port;
316 struct saa7164_dev *dev = port->dev;
317 struct saa7164_port *tsport;
318 struct dvb_frontend *fe;
319
320 /* TODO: Pull this for the std */
321 struct analog_parameters params = {
322 .mode = V4L2_TUNER_ANALOG_TV,
323 .audmode = V4L2_TUNER_MODE_STEREO,
324 .std = port->encodernorm.id,
325 .frequency = f->frequency
326 };
327
328 /* Stop the encoder */
329 dprintk(DBGLVL_VBI, "%s() frequency=%d tuner=%d\n", __func__,
330 f->frequency, f->tuner);
331
332 if (f->tuner != 0)
333 return -EINVAL;
334
335 if (f->type != V4L2_TUNER_ANALOG_TV)
336 return -EINVAL;
337
338 port->freq = f->frequency;
339
340 /* Update the hardware */
341 if (port->nr == SAA7164_PORT_VBI1)
342 tsport = &dev->ports[SAA7164_PORT_TS1];
343 else
344 if (port->nr == SAA7164_PORT_VBI2)
345 tsport = &dev->ports[SAA7164_PORT_TS2];
346 else
347 BUG();
348
349 fe = tsport->dvb.frontend;
350
351 if (fe && fe->ops.tuner_ops.set_analog_params)
352 fe->ops.tuner_ops.set_analog_params(fe, &params);
353 else
354 printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__);
355
356 saa7164_vbi_initialize(port);
357
358 return 0;
359 }
360
361 static int vidioc_g_ctrl(struct file *file, void *priv,
362 struct v4l2_control *ctl)
363 {
364 struct saa7164_vbi_fh *fh = file->private_data;
365 struct saa7164_port *port = fh->port;
366 struct saa7164_dev *dev = port->dev;
367
368 dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
369 ctl->id, ctl->value);
370
371 switch (ctl->id) {
372 case V4L2_CID_BRIGHTNESS:
373 ctl->value = port->ctl_brightness;
374 break;
375 case V4L2_CID_CONTRAST:
376 ctl->value = port->ctl_contrast;
377 break;
378 case V4L2_CID_SATURATION:
379 ctl->value = port->ctl_saturation;
380 break;
381 case V4L2_CID_HUE:
382 ctl->value = port->ctl_hue;
383 break;
384 case V4L2_CID_SHARPNESS:
385 ctl->value = port->ctl_sharpness;
386 break;
387 case V4L2_CID_AUDIO_VOLUME:
388 ctl->value = port->ctl_volume;
389 break;
390 default:
391 return -EINVAL;
392 }
393
394 return 0;
395 }
396
397 static int vidioc_s_ctrl(struct file *file, void *priv,
398 struct v4l2_control *ctl)
399 {
400 struct saa7164_vbi_fh *fh = file->private_data;
401 struct saa7164_port *port = fh->port;
402 struct saa7164_dev *dev = port->dev;
403 int ret = 0;
404
405 dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
406 ctl->id, ctl->value);
407
408 switch (ctl->id) {
409 case V4L2_CID_BRIGHTNESS:
410 if ((ctl->value >= 0) && (ctl->value <= 255)) {
411 port->ctl_brightness = ctl->value;
412 saa7164_api_set_usercontrol(port,
413 PU_BRIGHTNESS_CONTROL);
414 } else
415 ret = -EINVAL;
416 break;
417 case V4L2_CID_CONTRAST:
418 if ((ctl->value >= 0) && (ctl->value <= 255)) {
419 port->ctl_contrast = ctl->value;
420 saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL);
421 } else
422 ret = -EINVAL;
423 break;
424 case V4L2_CID_SATURATION:
425 if ((ctl->value >= 0) && (ctl->value <= 255)) {
426 port->ctl_saturation = ctl->value;
427 saa7164_api_set_usercontrol(port,
428 PU_SATURATION_CONTROL);
429 } else
430 ret = -EINVAL;
431 break;
432 case V4L2_CID_HUE:
433 if ((ctl->value >= 0) && (ctl->value <= 255)) {
434 port->ctl_hue = ctl->value;
435 saa7164_api_set_usercontrol(port, PU_HUE_CONTROL);
436 } else
437 ret = -EINVAL;
438 break;
439 case V4L2_CID_SHARPNESS:
440 if ((ctl->value >= 0) && (ctl->value <= 255)) {
441 port->ctl_sharpness = ctl->value;
442 saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL);
443 } else
444 ret = -EINVAL;
445 break;
446 case V4L2_CID_AUDIO_VOLUME:
447 if ((ctl->value >= -83) && (ctl->value <= 24)) {
448 port->ctl_volume = ctl->value;
449 saa7164_api_set_audio_volume(port, port->ctl_volume);
450 } else
451 ret = -EINVAL;
452 break;
453 default:
454 ret = -EINVAL;
455 }
456
457 return ret;
458 }
459
460 static int saa7164_get_ctrl(struct saa7164_port *port,
461 struct v4l2_ext_control *ctrl)
462 {
463 struct saa7164_vbi_params *params = &port->vbi_params;
464
465 switch (ctrl->id) {
466 case V4L2_CID_MPEG_STREAM_TYPE:
467 ctrl->value = params->stream_type;
468 break;
469 case V4L2_CID_MPEG_AUDIO_MUTE:
470 ctrl->value = params->ctl_mute;
471 break;
472 case V4L2_CID_MPEG_VIDEO_ASPECT:
473 ctrl->value = params->ctl_aspect;
474 break;
475 case V4L2_CID_MPEG_VIDEO_B_FRAMES:
476 ctrl->value = params->refdist;
477 break;
478 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
479 ctrl->value = params->gop_size;
480 break;
481 default:
482 return -EINVAL;
483 }
484 return 0;
485 }
486
487 static int vidioc_g_ext_ctrls(struct file *file, void *priv,
488 struct v4l2_ext_controls *ctrls)
489 {
490 struct saa7164_vbi_fh *fh = file->private_data;
491 struct saa7164_port *port = fh->port;
492 int i, err = 0;
493
494 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
495 for (i = 0; i < ctrls->count; i++) {
496 struct v4l2_ext_control *ctrl = ctrls->controls + i;
497
498 err = saa7164_get_ctrl(port, ctrl);
499 if (err) {
500 ctrls->error_idx = i;
501 break;
502 }
503 }
504 return err;
505
506 }
507
508 return -EINVAL;
509 }
510
511 static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
512 {
513 int ret = -EINVAL;
514
515 switch (ctrl->id) {
516 case V4L2_CID_MPEG_STREAM_TYPE:
517 if ((ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_PS) ||
518 (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS))
519 ret = 0;
520 break;
521 case V4L2_CID_MPEG_AUDIO_MUTE:
522 if ((ctrl->value >= 0) &&
523 (ctrl->value <= 1))
524 ret = 0;
525 break;
526 case V4L2_CID_MPEG_VIDEO_ASPECT:
527 if ((ctrl->value >= V4L2_MPEG_VIDEO_ASPECT_1x1) &&
528 (ctrl->value <= V4L2_MPEG_VIDEO_ASPECT_221x100))
529 ret = 0;
530 break;
531 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
532 if ((ctrl->value >= 0) &&
533 (ctrl->value <= 255))
534 ret = 0;
535 break;
536 case V4L2_CID_MPEG_VIDEO_B_FRAMES:
537 if ((ctrl->value >= 1) &&
538 (ctrl->value <= 3))
539 ret = 0;
540 break;
541 default:
542 ret = -EINVAL;
543 }
544
545 return ret;
546 }
547
548 static int vidioc_try_ext_ctrls(struct file *file, void *priv,
549 struct v4l2_ext_controls *ctrls)
550 {
551 int i, err = 0;
552
553 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
554 for (i = 0; i < ctrls->count; i++) {
555 struct v4l2_ext_control *ctrl = ctrls->controls + i;
556
557 err = saa7164_try_ctrl(ctrl, 0);
558 if (err) {
559 ctrls->error_idx = i;
560 break;
561 }
562 }
563 return err;
564 }
565
566 return -EINVAL;
567 }
568
569 static int saa7164_set_ctrl(struct saa7164_port *port,
570 struct v4l2_ext_control *ctrl)
571 {
572 struct saa7164_vbi_params *params = &port->vbi_params;
573 int ret = 0;
574
575 switch (ctrl->id) {
576 case V4L2_CID_MPEG_STREAM_TYPE:
577 params->stream_type = ctrl->value;
578 break;
579 case V4L2_CID_MPEG_AUDIO_MUTE:
580 params->ctl_mute = ctrl->value;
581 ret = saa7164_api_audio_mute(port, params->ctl_mute);
582 if (ret != SAA_OK) {
583 printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
584 ret);
585 ret = -EIO;
586 }
587 break;
588 case V4L2_CID_MPEG_VIDEO_ASPECT:
589 params->ctl_aspect = ctrl->value;
590 ret = saa7164_api_set_aspect_ratio(port);
591 if (ret != SAA_OK) {
592 printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
593 ret);
594 ret = -EIO;
595 }
596 break;
597 case V4L2_CID_MPEG_VIDEO_B_FRAMES:
598 params->refdist = ctrl->value;
599 break;
600 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
601 params->gop_size = ctrl->value;
602 break;
603 default:
604 return -EINVAL;
605 }
606
607 /* TODO: Update the hardware */
608
609 return ret;
610 }
611
612 static int vidioc_s_ext_ctrls(struct file *file, void *priv,
613 struct v4l2_ext_controls *ctrls)
614 {
615 struct saa7164_vbi_fh *fh = file->private_data;
616 struct saa7164_port *port = fh->port;
617 int i, err = 0;
618
619 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
620 for (i = 0; i < ctrls->count; i++) {
621 struct v4l2_ext_control *ctrl = ctrls->controls + i;
622
623 err = saa7164_try_ctrl(ctrl, 0);
624 if (err) {
625 ctrls->error_idx = i;
626 break;
627 }
628 err = saa7164_set_ctrl(port, ctrl);
629 if (err) {
630 ctrls->error_idx = i;
631 break;
632 }
633 }
634 return err;
635
636 }
637
638 return -EINVAL;
639 }
640
641 static int vidioc_querycap(struct file *file, void *priv,
642 struct v4l2_capability *cap)
643 {
644 struct saa7164_vbi_fh *fh = file->private_data;
645 struct saa7164_port *port = fh->port;
646 struct saa7164_dev *dev = port->dev;
647
648 strcpy(cap->driver, dev->name);
649 strlcpy(cap->card, saa7164_boards[dev->board].name,
650 sizeof(cap->card));
651 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
652
653 cap->capabilities =
654 V4L2_CAP_VBI_CAPTURE |
655 V4L2_CAP_READWRITE |
656 0;
657
658 cap->capabilities |= V4L2_CAP_TUNER;
659 cap->version = 0;
660
661 return 0;
662 }
663
664 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
665 struct v4l2_fmtdesc *f)
666 {
667 if (f->index != 0)
668 return -EINVAL;
669
670 strlcpy(f->description, "VBI", sizeof(f->description));
671 f->pixelformat = V4L2_PIX_FMT_MPEG;
672
673 return 0;
674 }
675
676 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
677 struct v4l2_format *f)
678 {
679 struct saa7164_vbi_fh *fh = file->private_data;
680 struct saa7164_port *port = fh->port;
681 struct saa7164_dev *dev = port->dev;
682
683 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
684 f->fmt.pix.bytesperline = 0;
685 f->fmt.pix.sizeimage =
686 port->ts_packet_size * port->ts_packet_count;
687 f->fmt.pix.colorspace = 0;
688 f->fmt.pix.width = port->width;
689 f->fmt.pix.height = port->height;
690
691 dprintk(DBGLVL_VBI, "VIDIOC_G_FMT: w: %d, h: %d\n",
692 port->width, port->height);
693
694 return 0;
695 }
696
697 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
698 struct v4l2_format *f)
699 {
700 struct saa7164_vbi_fh *fh = file->private_data;
701 struct saa7164_port *port = fh->port;
702 struct saa7164_dev *dev = port->dev;
703
704 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
705 f->fmt.pix.bytesperline = 0;
706 f->fmt.pix.sizeimage =
707 port->ts_packet_size * port->ts_packet_count;
708 f->fmt.pix.colorspace = 0;
709 dprintk(DBGLVL_VBI, "VIDIOC_TRY_FMT: w: %d, h: %d\n",
710 port->width, port->height);
711 return 0;
712 }
713
714 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
715 struct v4l2_format *f)
716 {
717 struct saa7164_vbi_fh *fh = file->private_data;
718 struct saa7164_port *port = fh->port;
719 struct saa7164_dev *dev = port->dev;
720
721 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
722 f->fmt.pix.bytesperline = 0;
723 f->fmt.pix.sizeimage =
724 port->ts_packet_size * port->ts_packet_count;
725 f->fmt.pix.colorspace = 0;
726
727 dprintk(DBGLVL_VBI, "VIDIOC_S_FMT: w: %d, h: %d, f: %d\n",
728 f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
729
730 return 0;
731 }
732
733 static int vidioc_log_status(struct file *file, void *priv)
734 {
735 return 0;
736 }
737
738 static int fill_queryctrl(struct saa7164_vbi_params *params,
739 struct v4l2_queryctrl *c)
740 {
741 switch (c->id) {
742 case V4L2_CID_BRIGHTNESS:
743 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 127);
744 case V4L2_CID_CONTRAST:
745 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 66);
746 case V4L2_CID_SATURATION:
747 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 62);
748 case V4L2_CID_HUE:
749 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 128);
750 case V4L2_CID_SHARPNESS:
751 return v4l2_ctrl_query_fill(c, 0x0, 0x0f, 1, 8);
752 case V4L2_CID_MPEG_AUDIO_MUTE:
753 return v4l2_ctrl_query_fill(c, 0x0, 0x01, 1, 0);
754 case V4L2_CID_AUDIO_VOLUME:
755 return v4l2_ctrl_query_fill(c, -83, 24, 1, 20);
756 case V4L2_CID_MPEG_STREAM_TYPE:
757 return v4l2_ctrl_query_fill(c,
758 V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
759 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
760 1, V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
761 case V4L2_CID_MPEG_VIDEO_ASPECT:
762 return v4l2_ctrl_query_fill(c,
763 V4L2_MPEG_VIDEO_ASPECT_1x1,
764 V4L2_MPEG_VIDEO_ASPECT_221x100,
765 1, V4L2_MPEG_VIDEO_ASPECT_4x3);
766 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
767 return v4l2_ctrl_query_fill(c, 1, 255, 1, 15);
768 case V4L2_CID_MPEG_VIDEO_B_FRAMES:
769 return v4l2_ctrl_query_fill(c,
770 1, 3, 1, 1);
771 default:
772 return -EINVAL;
773 }
774 }
775
776 static int vidioc_queryctrl(struct file *file, void *priv,
777 struct v4l2_queryctrl *c)
778 {
779 struct saa7164_vbi_fh *fh = priv;
780 struct saa7164_port *port = fh->port;
781 int i, next;
782 u32 id = c->id;
783
784 memset(c, 0, sizeof(*c));
785
786 next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
787 c->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
788
789 for (i = 0; i < ARRAY_SIZE(saa7164_v4l2_ctrls); i++) {
790 if (next) {
791 if (c->id < saa7164_v4l2_ctrls[i])
792 c->id = saa7164_v4l2_ctrls[i];
793 else
794 continue;
795 }
796
797 if (c->id == saa7164_v4l2_ctrls[i])
798 return fill_queryctrl(&port->vbi_params, c);
799
800 if (c->id < saa7164_v4l2_ctrls[i])
801 break;
802 }
803
804 return -EINVAL;
805 }
806
807 static int saa7164_vbi_stop_port(struct saa7164_port *port)
808 {
809 struct saa7164_dev *dev = port->dev;
810 int ret;
811
812 ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
813 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
814 printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
815 __func__, ret);
816 ret = -EIO;
817 } else {
818 dprintk(DBGLVL_VBI, "%s() Stopped\n", __func__);
819 ret = 0;
820 }
821
822 return ret;
823 }
824
825 static int saa7164_vbi_acquire_port(struct saa7164_port *port)
826 {
827 struct saa7164_dev *dev = port->dev;
828 int ret;
829
830 ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
831 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
832 printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
833 __func__, ret);
834 ret = -EIO;
835 } else {
836 dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__);
837 ret = 0;
838 }
839
840 return ret;
841 }
842
843 static int saa7164_vbi_pause_port(struct saa7164_port *port)
844 {
845 struct saa7164_dev *dev = port->dev;
846 int ret;
847
848 ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
849 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
850 printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
851 __func__, ret);
852 ret = -EIO;
853 } else {
854 dprintk(DBGLVL_VBI, "%s() Paused\n", __func__);
855 ret = 0;
856 }
857
858 return ret;
859 }
860
861 /* Firmware is very windows centric, meaning you have to transition
862 * the part through AVStream / KS Windows stages, forwards or backwards.
863 * States are: stopped, acquired (h/w), paused, started.
864 * We have to leave here will all of the soft buffers on the free list,
865 * else the cfg_post() func won't have soft buffers to correctly configure.
866 */
867 static int saa7164_vbi_stop_streaming(struct saa7164_port *port)
868 {
869 struct saa7164_dev *dev = port->dev;
870 struct saa7164_buffer *buf;
871 struct saa7164_user_buffer *ubuf;
872 struct list_head *c, *n;
873 int ret;
874
875 dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
876
877 ret = saa7164_vbi_pause_port(port);
878 ret = saa7164_vbi_acquire_port(port);
879 ret = saa7164_vbi_stop_port(port);
880
881 dprintk(DBGLVL_VBI, "%s(port=%d) Hardware stopped\n", __func__,
882 port->nr);
883
884 /* Reset the state of any allocated buffer resources */
885 mutex_lock(&port->dmaqueue_lock);
886
887 /* Reset the hard and soft buffer state */
888 list_for_each_safe(c, n, &port->dmaqueue.list) {
889 buf = list_entry(c, struct saa7164_buffer, list);
890 buf->flags = SAA7164_BUFFER_FREE;
891 buf->pos = 0;
892 }
893
894 list_for_each_safe(c, n, &port->list_buf_used.list) {
895 ubuf = list_entry(c, struct saa7164_user_buffer, list);
896 ubuf->pos = 0;
897 list_move_tail(&ubuf->list, &port->list_buf_free.list);
898 }
899
900 mutex_unlock(&port->dmaqueue_lock);
901
902 /* Free any allocated resources */
903 saa7164_vbi_buffers_dealloc(port);
904
905 dprintk(DBGLVL_VBI, "%s(port=%d) Released\n", __func__, port->nr);
906
907 return ret;
908 }
909
910 static int saa7164_vbi_start_streaming(struct saa7164_port *port)
911 {
912 struct saa7164_dev *dev = port->dev;
913 int result, ret = 0;
914
915 dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
916
917 port->done_first_interrupt = 0;
918
919 /* allocate all of the PCIe DMA buffer resources on the fly,
920 * allowing switching between TS and PS payloads without
921 * requiring a complete driver reload.
922 */
923 saa7164_vbi_buffers_alloc(port);
924
925 /* Configure the encoder with any cache values */
926 #if 0
927 saa7164_api_set_encoder(port);
928 saa7164_api_get_encoder(port);
929 #endif
930
931 /* Place the empty buffers on the hardware */
932 saa7164_buffer_cfg_port(port);
933
934 /* Negotiate format */
935 if (saa7164_api_set_vbi_format(port) != SAA_OK) {
936 printk(KERN_ERR "%s() No supported VBI format\n", __func__);
937 ret = -EIO;
938 goto out;
939 }
940
941 /* Acquire the hardware */
942 result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
943 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
944 printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
945 __func__, result);
946
947 ret = -EIO;
948 goto out;
949 } else
950 dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__);
951
952 /* Pause the hardware */
953 result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
954 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
955 printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
956 __func__, result);
957
958 /* Stop the hardware, regardless */
959 result = saa7164_vbi_stop_port(port);
960 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
961 printk(KERN_ERR "%s() pause/forced stop transition "
962 "failed, res = 0x%x\n", __func__, result);
963 }
964
965 ret = -EIO;
966 goto out;
967 } else
968 dprintk(DBGLVL_VBI, "%s() Paused\n", __func__);
969
970 /* Start the hardware */
971 result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
972 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
973 printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
974 __func__, result);
975
976 /* Stop the hardware, regardless */
977 result = saa7164_vbi_acquire_port(port);
978 result = saa7164_vbi_stop_port(port);
979 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
980 printk(KERN_ERR "%s() run/forced stop transition "
981 "failed, res = 0x%x\n", __func__, result);
982 }
983
984 ret = -EIO;
985 } else
986 dprintk(DBGLVL_VBI, "%s() Running\n", __func__);
987
988 out:
989 return ret;
990 }
991
992 int saa7164_vbi_fmt(struct file *file, void *priv, struct v4l2_format *f)
993 {
994 /* ntsc */
995 f->fmt.vbi.samples_per_line = 1600;
996 f->fmt.vbi.samples_per_line = 1440;
997 f->fmt.vbi.sampling_rate = 27000000;
998 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
999 f->fmt.vbi.offset = 0;
1000 f->fmt.vbi.flags = 0;
1001 f->fmt.vbi.start[0] = 10;
1002 f->fmt.vbi.count[0] = 18;
1003 f->fmt.vbi.start[1] = 263 + 10 + 1;
1004 f->fmt.vbi.count[1] = 18;
1005 return 0;
1006 }
1007
1008 static int fops_open(struct file *file)
1009 {
1010 struct saa7164_dev *dev;
1011 struct saa7164_port *port;
1012 struct saa7164_vbi_fh *fh;
1013
1014 port = (struct saa7164_port *)video_get_drvdata(video_devdata(file));
1015 if (!port)
1016 return -ENODEV;
1017
1018 dev = port->dev;
1019
1020 dprintk(DBGLVL_VBI, "%s()\n", __func__);
1021
1022 /* allocate + initialize per filehandle data */
1023 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1024 if (NULL == fh)
1025 return -ENOMEM;
1026
1027 file->private_data = fh;
1028 fh->port = port;
1029
1030 return 0;
1031 }
1032
1033 static int fops_release(struct file *file)
1034 {
1035 struct saa7164_vbi_fh *fh = file->private_data;
1036 struct saa7164_port *port = fh->port;
1037 struct saa7164_dev *dev = port->dev;
1038
1039 dprintk(DBGLVL_VBI, "%s()\n", __func__);
1040
1041 /* Shut device down on last close */
1042 if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) {
1043 if (atomic_dec_return(&port->v4l_reader_count) == 0) {
1044 /* stop vbi capture then cancel buffers */
1045 saa7164_vbi_stop_streaming(port);
1046 }
1047 }
1048
1049 file->private_data = NULL;
1050 kfree(fh);
1051
1052 return 0;
1053 }
1054
1055 struct saa7164_user_buffer *saa7164_vbi_next_buf(struct saa7164_port *port)
1056 {
1057 struct saa7164_user_buffer *ubuf = NULL;
1058 struct saa7164_dev *dev = port->dev;
1059 u32 crc;
1060
1061 mutex_lock(&port->dmaqueue_lock);
1062 if (!list_empty(&port->list_buf_used.list)) {
1063 ubuf = list_first_entry(&port->list_buf_used.list,
1064 struct saa7164_user_buffer, list);
1065
1066 if (crc_checking) {
1067 crc = crc32(0, ubuf->data, ubuf->actual_size);
1068 if (crc != ubuf->crc) {
1069 printk(KERN_ERR "%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n",
1070 __func__,
1071 ubuf, ubuf->crc, crc);
1072 }
1073 }
1074
1075 }
1076 mutex_unlock(&port->dmaqueue_lock);
1077
1078 dprintk(DBGLVL_VBI, "%s() returns %p\n", __func__, ubuf);
1079
1080 return ubuf;
1081 }
1082
1083 static ssize_t fops_read(struct file *file, char __user *buffer,
1084 size_t count, loff_t *pos)
1085 {
1086 struct saa7164_vbi_fh *fh = file->private_data;
1087 struct saa7164_port *port = fh->port;
1088 struct saa7164_user_buffer *ubuf = NULL;
1089 struct saa7164_dev *dev = port->dev;
1090 int ret = 0;
1091 int rem, cnt;
1092 u8 *p;
1093
1094 port->last_read_msecs_diff = port->last_read_msecs;
1095 port->last_read_msecs = jiffies_to_msecs(jiffies);
1096 port->last_read_msecs_diff = port->last_read_msecs -
1097 port->last_read_msecs_diff;
1098
1099 saa7164_histogram_update(&port->read_interval,
1100 port->last_read_msecs_diff);
1101
1102 if (*pos) {
1103 printk(KERN_ERR "%s() ESPIPE\n", __func__);
1104 return -ESPIPE;
1105 }
1106
1107 if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
1108 if (atomic_inc_return(&port->v4l_reader_count) == 1) {
1109
1110 if (saa7164_vbi_initialize(port) < 0) {
1111 printk(KERN_ERR "%s() EINVAL\n", __func__);
1112 return -EINVAL;
1113 }
1114
1115 saa7164_vbi_start_streaming(port);
1116 msleep(200);
1117 }
1118 }
1119
1120 /* blocking wait for buffer */
1121 if ((file->f_flags & O_NONBLOCK) == 0) {
1122 if (wait_event_interruptible(port->wait_read,
1123 saa7164_vbi_next_buf(port))) {
1124 printk(KERN_ERR "%s() ERESTARTSYS\n", __func__);
1125 return -ERESTARTSYS;
1126 }
1127 }
1128
1129 /* Pull the first buffer from the used list */
1130 ubuf = saa7164_vbi_next_buf(port);
1131
1132 while ((count > 0) && ubuf) {
1133
1134 /* set remaining bytes to copy */
1135 rem = ubuf->actual_size - ubuf->pos;
1136 cnt = rem > count ? count : rem;
1137
1138 p = ubuf->data + ubuf->pos;
1139
1140 dprintk(DBGLVL_VBI,
1141 "%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n",
1142 __func__, (int)count, cnt, rem, ubuf, ubuf->pos);
1143
1144 if (copy_to_user(buffer, p, cnt)) {
1145 printk(KERN_ERR "%s() copy_to_user failed\n", __func__);
1146 if (!ret) {
1147 printk(KERN_ERR "%s() EFAULT\n", __func__);
1148 ret = -EFAULT;
1149 }
1150 goto err;
1151 }
1152
1153 ubuf->pos += cnt;
1154 count -= cnt;
1155 buffer += cnt;
1156 ret += cnt;
1157
1158 if (ubuf->pos > ubuf->actual_size)
1159 printk(KERN_ERR "read() pos > actual, huh?\n");
1160
1161 if (ubuf->pos == ubuf->actual_size) {
1162
1163 /* finished with current buffer, take next buffer */
1164
1165 /* Requeue the buffer on the free list */
1166 ubuf->pos = 0;
1167
1168 mutex_lock(&port->dmaqueue_lock);
1169 list_move_tail(&ubuf->list, &port->list_buf_free.list);
1170 mutex_unlock(&port->dmaqueue_lock);
1171
1172 /* Dequeue next */
1173 if ((file->f_flags & O_NONBLOCK) == 0) {
1174 if (wait_event_interruptible(port->wait_read,
1175 saa7164_vbi_next_buf(port))) {
1176 break;
1177 }
1178 }
1179 ubuf = saa7164_vbi_next_buf(port);
1180 }
1181 }
1182 err:
1183 if (!ret && !ubuf) {
1184 printk(KERN_ERR "%s() EAGAIN\n", __func__);
1185 ret = -EAGAIN;
1186 }
1187
1188 return ret;
1189 }
1190
1191 static unsigned int fops_poll(struct file *file, poll_table *wait)
1192 {
1193 struct saa7164_vbi_fh *fh = (struct saa7164_vbi_fh *)file->private_data;
1194 struct saa7164_port *port = fh->port;
1195 struct saa7164_user_buffer *ubuf;
1196 unsigned int mask = 0;
1197
1198 port->last_poll_msecs_diff = port->last_poll_msecs;
1199 port->last_poll_msecs = jiffies_to_msecs(jiffies);
1200 port->last_poll_msecs_diff = port->last_poll_msecs -
1201 port->last_poll_msecs_diff;
1202
1203 saa7164_histogram_update(&port->poll_interval,
1204 port->last_poll_msecs_diff);
1205
1206 if (!video_is_registered(port->v4l_device))
1207 return -EIO;
1208
1209 if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
1210 if (atomic_inc_return(&port->v4l_reader_count) == 1) {
1211 if (saa7164_vbi_initialize(port) < 0)
1212 return -EINVAL;
1213 saa7164_vbi_start_streaming(port);
1214 msleep(200);
1215 }
1216 }
1217
1218 /* blocking wait for buffer */
1219 if ((file->f_flags & O_NONBLOCK) == 0) {
1220 if (wait_event_interruptible(port->wait_read,
1221 saa7164_vbi_next_buf(port))) {
1222 return -ERESTARTSYS;
1223 }
1224 }
1225
1226 /* Pull the first buffer from the used list */
1227 ubuf = list_first_entry(&port->list_buf_used.list,
1228 struct saa7164_user_buffer, list);
1229
1230 if (ubuf)
1231 mask |= POLLIN | POLLRDNORM;
1232
1233 return mask;
1234 }
1235 static const struct v4l2_file_operations vbi_fops = {
1236 .owner = THIS_MODULE,
1237 .open = fops_open,
1238 .release = fops_release,
1239 .read = fops_read,
1240 .poll = fops_poll,
1241 .unlocked_ioctl = video_ioctl2,
1242 };
1243
1244 static const struct v4l2_ioctl_ops vbi_ioctl_ops = {
1245 .vidioc_s_std = vidioc_s_std,
1246 .vidioc_enum_input = vidioc_enum_input,
1247 .vidioc_g_input = vidioc_g_input,
1248 .vidioc_s_input = vidioc_s_input,
1249 .vidioc_g_tuner = vidioc_g_tuner,
1250 .vidioc_s_tuner = vidioc_s_tuner,
1251 .vidioc_g_frequency = vidioc_g_frequency,
1252 .vidioc_s_frequency = vidioc_s_frequency,
1253 .vidioc_s_ctrl = vidioc_s_ctrl,
1254 .vidioc_g_ctrl = vidioc_g_ctrl,
1255 .vidioc_querycap = vidioc_querycap,
1256 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1257 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1258 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1259 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1260 .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls,
1261 .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
1262 .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
1263 .vidioc_log_status = vidioc_log_status,
1264 .vidioc_queryctrl = vidioc_queryctrl,
1265 #if 0
1266 .vidioc_g_chip_ident = saa7164_g_chip_ident,
1267 #endif
1268 #ifdef CONFIG_VIDEO_ADV_DEBUG
1269 #if 0
1270 .vidioc_g_register = saa7164_g_register,
1271 .vidioc_s_register = saa7164_s_register,
1272 #endif
1273 #endif
1274 .vidioc_g_fmt_vbi_cap = saa7164_vbi_fmt,
1275 .vidioc_try_fmt_vbi_cap = saa7164_vbi_fmt,
1276 .vidioc_s_fmt_vbi_cap = saa7164_vbi_fmt,
1277 };
1278
1279 static struct video_device saa7164_vbi_template = {
1280 .name = "saa7164",
1281 .fops = &vbi_fops,
1282 .ioctl_ops = &vbi_ioctl_ops,
1283 .minor = -1,
1284 .tvnorms = SAA7164_NORMS,
1285 .current_norm = V4L2_STD_NTSC_M,
1286 };
1287
1288 static struct video_device *saa7164_vbi_alloc(
1289 struct saa7164_port *port,
1290 struct pci_dev *pci,
1291 struct video_device *template,
1292 char *type)
1293 {
1294 struct video_device *vfd;
1295 struct saa7164_dev *dev = port->dev;
1296
1297 dprintk(DBGLVL_VBI, "%s()\n", __func__);
1298
1299 vfd = video_device_alloc();
1300 if (NULL == vfd)
1301 return NULL;
1302
1303 *vfd = *template;
1304 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
1305 type, saa7164_boards[dev->board].name);
1306
1307 vfd->parent = &pci->dev;
1308 vfd->release = video_device_release;
1309 return vfd;
1310 }
1311
1312 int saa7164_vbi_register(struct saa7164_port *port)
1313 {
1314 struct saa7164_dev *dev = port->dev;
1315 int result = -ENODEV;
1316
1317 dprintk(DBGLVL_VBI, "%s()\n", __func__);
1318
1319 if (port->type != SAA7164_MPEG_VBI)
1320 BUG();
1321
1322 /* Sanity check that the PCI configuration space is active */
1323 if (port->hwcfg.BARLocation == 0) {
1324 printk(KERN_ERR "%s() failed "
1325 "(errno = %d), NO PCI configuration\n",
1326 __func__, result);
1327 result = -ENOMEM;
1328 goto failed;
1329 }
1330
1331 /* Establish VBI defaults here */
1332
1333 /* Allocate and register the video device node */
1334 port->v4l_device = saa7164_vbi_alloc(port,
1335 dev->pci, &saa7164_vbi_template, "vbi");
1336
1337 if (!port->v4l_device) {
1338 printk(KERN_INFO "%s: can't allocate vbi device\n",
1339 dev->name);
1340 result = -ENOMEM;
1341 goto failed;
1342 }
1343
1344 video_set_drvdata(port->v4l_device, port);
1345 result = video_register_device(port->v4l_device,
1346 VFL_TYPE_VBI, -1);
1347 if (result < 0) {
1348 printk(KERN_INFO "%s: can't register vbi device\n",
1349 dev->name);
1350 /* TODO: We're going to leak here if we don't dealloc
1351 The buffers above. The unreg function can't deal wit it.
1352 */
1353 goto failed;
1354 }
1355
1356 printk(KERN_INFO "%s: registered device vbi%d [vbi]\n",
1357 dev->name, port->v4l_device->num);
1358
1359 /* Configure the hardware defaults */
1360
1361 result = 0;
1362 failed:
1363 return result;
1364 }
1365
1366 void saa7164_vbi_unregister(struct saa7164_port *port)
1367 {
1368 struct saa7164_dev *dev = port->dev;
1369
1370 dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
1371
1372 if (port->type != SAA7164_MPEG_VBI)
1373 BUG();
1374
1375 if (port->v4l_device) {
1376 if (port->v4l_device->minor != -1)
1377 video_unregister_device(port->v4l_device);
1378 else
1379 video_device_release(port->v4l_device);
1380
1381 port->v4l_device = NULL;
1382 }
1383
1384 }