Commit | Line | Data |
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1a0adaf3 HV |
1 | /* |
2 | init/start/stop/exit stream functions | |
3 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | |
4 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> | |
5 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
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 | /* License: GPL | |
23 | * Author: Kevin Thayer <nufan_wfk at yahoo dot com> | |
24 | * | |
25 | * This file will hold API related functions, both internal (firmware api) | |
26 | * and external (v4l2, etc) | |
27 | * | |
28 | * ----- | |
29 | * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com> | |
30 | * and Takeru KOMORIYA<komoriya@paken.org> | |
31 | * | |
32 | * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org> | |
33 | * using information provided by Jiun-Kuei Jung @ AVerMedia. | |
34 | */ | |
35 | ||
36 | #include "ivtv-driver.h" | |
37 | #include "ivtv-fileops.h" | |
38 | #include "ivtv-i2c.h" | |
39 | #include "ivtv-queue.h" | |
40 | #include "ivtv-mailbox.h" | |
41 | #include "ivtv-audio.h" | |
42 | #include "ivtv-video.h" | |
43 | #include "ivtv-vbi.h" | |
44 | #include "ivtv-ioctl.h" | |
45 | #include "ivtv-irq.h" | |
46 | #include "ivtv-streams.h" | |
47 | #include "ivtv-cards.h" | |
48 | ||
49 | static struct file_operations ivtv_v4l2_enc_fops = { | |
50 | .owner = THIS_MODULE, | |
51 | .read = ivtv_v4l2_read, | |
52 | .write = ivtv_v4l2_write, | |
53 | .open = ivtv_v4l2_open, | |
54 | .ioctl = ivtv_v4l2_ioctl, | |
55 | .release = ivtv_v4l2_close, | |
56 | .poll = ivtv_v4l2_enc_poll, | |
57 | }; | |
58 | ||
59 | static struct file_operations ivtv_v4l2_dec_fops = { | |
60 | .owner = THIS_MODULE, | |
61 | .read = ivtv_v4l2_read, | |
62 | .write = ivtv_v4l2_write, | |
63 | .open = ivtv_v4l2_open, | |
64 | .ioctl = ivtv_v4l2_ioctl, | |
65 | .release = ivtv_v4l2_close, | |
66 | .poll = ivtv_v4l2_dec_poll, | |
67 | }; | |
68 | ||
31ec1356 | 69 | static struct { |
1a0adaf3 HV |
70 | const char *name; |
71 | int vfl_type; | |
72 | int minor_offset; | |
73 | int dma, pio; | |
74 | enum v4l2_buf_type buf_type; | |
75 | struct file_operations *fops; | |
76 | } ivtv_stream_info[] = { | |
77 | { /* IVTV_ENC_STREAM_TYPE_MPG */ | |
78 | "encoder MPEG", | |
79 | VFL_TYPE_GRABBER, 0, | |
80 | PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
81 | &ivtv_v4l2_enc_fops | |
82 | }, | |
83 | { /* IVTV_ENC_STREAM_TYPE_YUV */ | |
84 | "encoder YUV", | |
85 | VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET, | |
86 | PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
87 | &ivtv_v4l2_enc_fops | |
88 | }, | |
89 | { /* IVTV_ENC_STREAM_TYPE_VBI */ | |
90 | "encoder VBI", | |
91 | VFL_TYPE_VBI, 0, | |
92 | PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE, | |
93 | &ivtv_v4l2_enc_fops | |
94 | }, | |
95 | { /* IVTV_ENC_STREAM_TYPE_PCM */ | |
96 | "encoder PCM audio", | |
97 | VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET, | |
98 | PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE, | |
99 | &ivtv_v4l2_enc_fops | |
100 | }, | |
101 | { /* IVTV_ENC_STREAM_TYPE_RAD */ | |
102 | "encoder radio", | |
103 | VFL_TYPE_RADIO, 0, | |
104 | PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE, | |
105 | &ivtv_v4l2_enc_fops | |
106 | }, | |
107 | { /* IVTV_DEC_STREAM_TYPE_MPG */ | |
108 | "decoder MPEG", | |
109 | VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET, | |
110 | PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT, | |
111 | &ivtv_v4l2_dec_fops | |
112 | }, | |
113 | { /* IVTV_DEC_STREAM_TYPE_VBI */ | |
114 | "decoder VBI", | |
115 | VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET, | |
116 | PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE, | |
117 | &ivtv_v4l2_enc_fops | |
118 | }, | |
119 | { /* IVTV_DEC_STREAM_TYPE_VOUT */ | |
120 | "decoder VOUT", | |
121 | VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET, | |
122 | PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT, | |
123 | &ivtv_v4l2_dec_fops | |
124 | }, | |
125 | { /* IVTV_DEC_STREAM_TYPE_YUV */ | |
126 | "decoder YUV", | |
127 | VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET, | |
128 | PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT, | |
129 | &ivtv_v4l2_dec_fops | |
130 | } | |
131 | }; | |
132 | ||
133 | static void ivtv_stream_init(struct ivtv *itv, int type) | |
134 | { | |
135 | struct ivtv_stream *s = &itv->streams[type]; | |
136 | struct video_device *dev = s->v4l2dev; | |
137 | ||
138 | /* we need to keep v4l2dev, so restore it afterwards */ | |
139 | memset(s, 0, sizeof(*s)); | |
140 | s->v4l2dev = dev; | |
141 | ||
142 | /* initialize ivtv_stream fields */ | |
143 | s->itv = itv; | |
144 | s->type = type; | |
145 | s->name = ivtv_stream_info[type].name; | |
146 | ||
147 | if (ivtv_stream_info[type].pio) | |
148 | s->dma = PCI_DMA_NONE; | |
149 | else | |
150 | s->dma = ivtv_stream_info[type].dma; | |
151 | s->buf_size = itv->stream_buf_size[type]; | |
152 | if (s->buf_size) | |
153 | s->buffers = itv->options.megabytes[type] * 1024 * 1024 / s->buf_size; | |
154 | spin_lock_init(&s->qlock); | |
155 | init_waitqueue_head(&s->waitq); | |
156 | s->id = -1; | |
157 | s->SG_handle = IVTV_DMA_UNMAPPED; | |
158 | ivtv_queue_init(&s->q_free); | |
159 | ivtv_queue_init(&s->q_full); | |
160 | ivtv_queue_init(&s->q_dma); | |
161 | ivtv_queue_init(&s->q_predma); | |
162 | ivtv_queue_init(&s->q_io); | |
163 | } | |
164 | ||
165 | static int ivtv_reg_dev(struct ivtv *itv, int type) | |
166 | { | |
167 | struct ivtv_stream *s = &itv->streams[type]; | |
168 | int vfl_type = ivtv_stream_info[type].vfl_type; | |
169 | int minor_offset = ivtv_stream_info[type].minor_offset; | |
170 | int minor; | |
171 | ||
172 | /* These four fields are always initialized. If v4l2dev == NULL, then | |
173 | this stream is not in use. In that case no other fields but these | |
174 | four can be used. */ | |
175 | s->v4l2dev = NULL; | |
176 | s->itv = itv; | |
177 | s->type = type; | |
178 | s->name = ivtv_stream_info[type].name; | |
179 | ||
180 | /* Check whether the radio is supported */ | |
181 | if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO)) | |
182 | return 0; | |
183 | if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) | |
184 | return 0; | |
185 | ||
186 | if (minor_offset >= 0) | |
187 | /* card number + user defined offset + device offset */ | |
188 | minor = itv->num + ivtv_first_minor + minor_offset; | |
189 | else | |
190 | minor = -1; | |
191 | ||
192 | /* User explicitly selected 0 buffers for these streams, so don't | |
193 | create them. */ | |
194 | if (minor >= 0 && ivtv_stream_info[type].dma != PCI_DMA_NONE && | |
195 | itv->options.megabytes[type] == 0) { | |
196 | IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | ivtv_stream_init(itv, type); | |
201 | ||
202 | /* allocate and initialize the v4l2 video device structure */ | |
203 | s->v4l2dev = video_device_alloc(); | |
204 | if (s->v4l2dev == NULL) { | |
205 | IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name); | |
206 | return -ENOMEM; | |
207 | } | |
208 | ||
209 | s->v4l2dev->type = VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT | | |
210 | VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER; | |
211 | if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) { | |
212 | s->v4l2dev->type |= VID_TYPE_MPEG_DECODER; | |
213 | } | |
214 | snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s", | |
215 | itv->num, s->name); | |
216 | ||
217 | s->v4l2dev->minor = minor; | |
218 | s->v4l2dev->dev = &itv->dev->dev; | |
219 | s->v4l2dev->fops = ivtv_stream_info[type].fops; | |
220 | s->v4l2dev->release = video_device_release; | |
221 | ||
222 | if (minor >= 0) { | |
223 | /* Register device. First try the desired minor, then any free one. */ | |
224 | if (video_register_device(s->v4l2dev, vfl_type, minor) && | |
225 | video_register_device(s->v4l2dev, vfl_type, -1)) { | |
226 | IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n", | |
227 | s->name, minor); | |
228 | video_device_release(s->v4l2dev); | |
229 | s->v4l2dev = NULL; | |
230 | return -ENOMEM; | |
231 | } | |
232 | } | |
233 | else { | |
234 | /* Don't register a 'hidden' stream (OSD) */ | |
235 | IVTV_INFO("Created framebuffer stream for %s\n", s->name); | |
236 | return 0; | |
237 | } | |
238 | ||
239 | switch (vfl_type) { | |
240 | case VFL_TYPE_GRABBER: | |
241 | IVTV_INFO("Registered device video%d for %s (%d MB)\n", | |
242 | s->v4l2dev->minor, s->name, itv->options.megabytes[type]); | |
243 | break; | |
244 | case VFL_TYPE_RADIO: | |
245 | IVTV_INFO("Registered device radio%d for %s\n", | |
246 | s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name); | |
247 | break; | |
248 | case VFL_TYPE_VBI: | |
249 | if (itv->options.megabytes[type]) | |
250 | IVTV_INFO("Registered device vbi%d for %s (%d MB)\n", | |
251 | s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, | |
252 | s->name, itv->options.megabytes[type]); | |
253 | else | |
254 | IVTV_INFO("Registered device vbi%d for %s\n", | |
255 | s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name); | |
256 | break; | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
261 | /* Initialize v4l2 variables and register v4l2 devices */ | |
262 | int ivtv_streams_setup(struct ivtv *itv) | |
263 | { | |
264 | int type; | |
265 | ||
266 | /* Setup V4L2 Devices */ | |
267 | for (type = 0; type < IVTV_MAX_STREAMS; type++) { | |
268 | /* Register Device */ | |
269 | if (ivtv_reg_dev(itv, type)) | |
270 | break; | |
271 | ||
272 | if (itv->streams[type].v4l2dev == NULL) | |
273 | continue; | |
274 | ||
275 | /* Allocate Stream */ | |
276 | if (ivtv_stream_alloc(&itv->streams[type])) | |
277 | break; | |
278 | } | |
279 | if (type == IVTV_MAX_STREAMS) { | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /* One or more streams could not be initialized. Clean 'em all up. */ | |
284 | ivtv_streams_cleanup(itv); | |
285 | return -ENOMEM; | |
286 | } | |
287 | ||
288 | /* Unregister v4l2 devices */ | |
289 | void ivtv_streams_cleanup(struct ivtv *itv) | |
290 | { | |
291 | int type; | |
292 | ||
293 | /* Teardown all streams */ | |
294 | for (type = 0; type < IVTV_MAX_STREAMS; type++) { | |
295 | struct video_device *vdev = itv->streams[type].v4l2dev; | |
296 | ||
297 | itv->streams[type].v4l2dev = NULL; | |
298 | if (vdev == NULL) | |
299 | continue; | |
300 | ||
301 | ivtv_stream_free(&itv->streams[type]); | |
302 | /* Free Device */ | |
303 | if (vdev->minor == -1) /* 'Hidden' never registered stream (OSD) */ | |
304 | video_device_release(vdev); | |
305 | else /* All others, just unregister. */ | |
306 | video_unregister_device(vdev); | |
307 | } | |
308 | } | |
309 | ||
310 | static void ivtv_vbi_setup(struct ivtv *itv) | |
311 | { | |
312 | int raw = itv->vbi.sliced_in->service_set == 0; | |
313 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
314 | int lines; | |
315 | int i; | |
316 | ||
317 | /* If Embed then streamtype must be Program */ | |
318 | /* TODO: should we really do this? */ | |
319 | if (0 && !raw && itv->vbi.insert_mpeg) { | |
320 | itv->params.stream_type = 0; | |
321 | ||
322 | /* assign stream type */ | |
323 | ivtv_vapi(itv, CX2341X_ENC_SET_STREAM_TYPE, 1, itv->params.stream_type); | |
324 | } | |
325 | ||
326 | /* Reset VBI */ | |
327 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0); | |
328 | ||
329 | if (itv->is_60hz) { | |
330 | itv->vbi.count = 12; | |
331 | itv->vbi.start[0] = 10; | |
332 | itv->vbi.start[1] = 273; | |
333 | } else { /* PAL/SECAM */ | |
334 | itv->vbi.count = 18; | |
335 | itv->vbi.start[0] = 6; | |
336 | itv->vbi.start[1] = 318; | |
337 | } | |
338 | ||
339 | /* setup VBI registers */ | |
340 | itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in); | |
341 | ||
342 | /* determine number of lines and total number of VBI bytes. | |
343 | A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 | |
344 | The '- 1' byte is probably an unused U or V byte. Or something... | |
345 | A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal | |
346 | header, 42 data bytes + checksum (to be confirmed) */ | |
347 | if (raw) { | |
348 | lines = itv->vbi.count * 2; | |
349 | } else { | |
350 | lines = itv->is_60hz ? 24 : 38; | |
351 | if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840)) | |
352 | lines += 2; | |
353 | } | |
354 | ||
355 | itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); | |
356 | ||
357 | /* Note: sliced vs raw flag doesn't seem to have any effect | |
358 | TODO: check mode (0x02) value with older ivtv versions. */ | |
359 | data[0] = raw | 0x02 | (0xbd << 8); | |
360 | ||
361 | /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */ | |
362 | data[1] = 1; | |
363 | /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */ | |
364 | data[2] = raw ? 4 : 8; | |
365 | /* The start/stop codes determine which VBI lines end up in the raw VBI data area. | |
366 | The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line | |
367 | is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video) | |
368 | code. These values for raw VBI are obtained from a driver disassembly. The sliced | |
369 | start/stop codes was deduced from this, but they do not appear in the driver. | |
370 | Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54. | |
371 | However, I have no idea what these values are for. */ | |
372 | if (itv->hw_flags & IVTV_HW_CX25840) { | |
373 | /* Setup VBI for the cx25840 digitizer */ | |
374 | if (raw) { | |
375 | data[3] = 0x20602060; | |
376 | data[4] = 0x30703070; | |
377 | } else { | |
378 | data[3] = 0xB0F0B0F0; | |
379 | data[4] = 0xA0E0A0E0; | |
380 | } | |
381 | /* Lines per frame */ | |
382 | data[5] = lines; | |
383 | /* bytes per line */ | |
384 | data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); | |
385 | } else { | |
386 | /* Setup VBI for the saa7115 digitizer */ | |
387 | if (raw) { | |
388 | data[3] = 0x25256262; | |
389 | data[4] = 0x387F7F7F; | |
390 | } else { | |
391 | data[3] = 0xABABECEC; | |
392 | data[4] = 0xB6F1F1F1; | |
393 | } | |
394 | /* Lines per frame */ | |
395 | data[5] = lines; | |
396 | /* bytes per line */ | |
397 | data[6] = itv->vbi.enc_size / lines; | |
398 | } | |
399 | ||
400 | IVTV_DEBUG_INFO( | |
401 | "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n", | |
402 | data[0], data[1], data[2], data[5], data[6]); | |
403 | ||
404 | ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data); | |
405 | ||
406 | /* returns the VBI encoder memory area. */ | |
407 | itv->vbi.enc_start = data[2]; | |
408 | itv->vbi.fpi = data[0]; | |
409 | if (!itv->vbi.fpi) | |
410 | itv->vbi.fpi = 1; | |
411 | ||
412 | IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d lines 0x%08x\n", | |
413 | itv->vbi.enc_start, data[1], itv->vbi.fpi, itv->digitizer); | |
414 | ||
415 | /* select VBI lines. | |
416 | Note that the sliced argument seems to have no effect. */ | |
417 | for (i = 2; i <= 24; i++) { | |
418 | int valid; | |
419 | ||
420 | if (itv->is_60hz) { | |
421 | valid = i >= 10 && i < 22; | |
422 | } else { | |
423 | valid = i >= 6 && i < 24; | |
424 | } | |
425 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1, | |
426 | valid, 0 , 0, 0); | |
427 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000, | |
428 | valid, 0, 0, 0); | |
429 | } | |
430 | ||
431 | /* Remaining VBI questions: | |
432 | - Is it possible to select particular VBI lines only for inclusion in the MPEG | |
433 | stream? Currently you can only get the first X lines. | |
434 | - Is mixed raw and sliced VBI possible? | |
435 | - What's the meaning of the raw/sliced flag? | |
436 | - What's the meaning of params 2, 3 & 4 of the Select VBI command? */ | |
437 | } | |
438 | ||
439 | int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) | |
440 | { | |
441 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
442 | struct ivtv *itv = s->itv; | |
443 | int captype = 0, subtype = 0; | |
444 | int enable_passthrough = 0; | |
445 | ||
446 | if (s->v4l2dev == NULL) | |
447 | return -EINVAL; | |
448 | ||
f8859691 HV |
449 | /* Big serialization lock to ensure no two streams are started |
450 | simultaneously: that can give all sorts of weird results. */ | |
451 | mutex_lock(&itv->serialize_lock); | |
1a0adaf3 HV |
452 | IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name); |
453 | ||
454 | switch (s->type) { | |
455 | case IVTV_ENC_STREAM_TYPE_MPG: | |
456 | captype = 0; | |
457 | subtype = 3; | |
458 | ||
459 | /* Stop Passthrough */ | |
460 | if (itv->output_mode == OUT_PASSTHROUGH) { | |
461 | ivtv_passthrough_mode(itv, 0); | |
462 | enable_passthrough = 1; | |
463 | } | |
464 | itv->mpg_data_received = itv->vbi_data_inserted = 0; | |
465 | itv->dualwatch_jiffies = jiffies; | |
466 | itv->dualwatch_stereo_mode = itv->params.audio_properties & 0x0300; | |
467 | itv->search_pack_header = 0; | |
468 | break; | |
469 | ||
470 | case IVTV_ENC_STREAM_TYPE_YUV: | |
471 | if (itv->output_mode == OUT_PASSTHROUGH) { | |
472 | captype = 2; | |
473 | subtype = 11; /* video+audio+decoder */ | |
474 | break; | |
475 | } | |
476 | captype = 1; | |
477 | subtype = 1; | |
478 | break; | |
479 | case IVTV_ENC_STREAM_TYPE_PCM: | |
480 | captype = 1; | |
481 | subtype = 2; | |
482 | break; | |
483 | case IVTV_ENC_STREAM_TYPE_VBI: | |
484 | captype = 1; | |
485 | subtype = 4; | |
486 | ||
487 | itv->vbi.frame = 0; | |
488 | itv->vbi.inserted_frame = 0; | |
489 | memset(itv->vbi.sliced_mpeg_size, | |
490 | 0, sizeof(itv->vbi.sliced_mpeg_size)); | |
491 | break; | |
492 | default: | |
f8859691 | 493 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
494 | return -EINVAL; |
495 | } | |
496 | s->subtype = subtype; | |
497 | s->buffers_stolen = 0; | |
498 | ||
499 | /* mute/unmute video */ | |
500 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? 1 : 0); | |
501 | ||
502 | /* Clear Streamoff flags in case left from last capture */ | |
503 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
504 | ||
505 | if (atomic_read(&itv->capturing) == 0) { | |
506 | /* Always use frame based mode. Experiments have demonstrated that byte | |
507 | stream based mode results in dropped frames and corruption. Not often, | |
508 | but occasionally. Many thanks go to Leonard Orb who spent a lot of | |
509 | effort and time trying to trace the cause of the drop outs. */ | |
510 | /* 1 frame per DMA */ | |
511 | /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */ | |
512 | ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1); | |
513 | ||
514 | /* Stuff from Windows, we don't know what it is */ | |
515 | ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0); | |
516 | /* According to the docs, this should be correct. However, this is | |
517 | untested. I don't dare enable this without having tested it. | |
518 | Only very few old cards actually have this hardware combination. | |
519 | ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, | |
520 | ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0); | |
521 | */ | |
522 | ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415); | |
523 | ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0); | |
524 | ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1); | |
525 | ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); | |
526 | ||
527 | /* assign placeholder */ | |
528 | ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12, | |
529 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); | |
530 | ||
531 | ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, itv->digitizer, itv->digitizer); | |
532 | ||
533 | /* Setup VBI */ | |
534 | if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) { | |
535 | ivtv_vbi_setup(itv); | |
536 | } | |
537 | ||
538 | /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */ | |
539 | ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400); | |
540 | itv->pgm_info_offset = data[0]; | |
541 | itv->pgm_info_num = data[1]; | |
542 | itv->pgm_info_write_idx = 0; | |
543 | itv->pgm_info_read_idx = 0; | |
544 | ||
545 | IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n", | |
546 | itv->pgm_info_offset, itv->pgm_info_num); | |
547 | ||
548 | /* Setup API for Stream */ | |
549 | cx2341x_update(itv, ivtv_api_func, NULL, &itv->params); | |
550 | } | |
551 | ||
552 | /* Vsync Setup */ | |
553 | if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { | |
554 | /* event notification (on) */ | |
555 | ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1); | |
556 | ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); | |
557 | } | |
558 | ||
559 | if (atomic_read(&itv->capturing) == 0) { | |
560 | /* Clear all Pending Interrupts */ | |
561 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); | |
562 | ||
563 | clear_bit(IVTV_F_I_EOS, &itv->i_flags); | |
564 | ||
565 | /* Initialize Digitizer for Capture */ | |
566 | ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0); | |
567 | ||
201700d3 | 568 | ivtv_msleep_timeout(100, 0); |
1a0adaf3 HV |
569 | } |
570 | ||
571 | /* begin_capture */ | |
572 | if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype)) | |
573 | { | |
574 | IVTV_DEBUG_WARN( "Error starting capture!\n"); | |
f8859691 | 575 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
576 | return -EINVAL; |
577 | } | |
578 | ||
579 | /* Start Passthrough */ | |
580 | if (enable_passthrough) { | |
581 | ivtv_passthrough_mode(itv, 1); | |
582 | } | |
583 | ||
584 | if (s->type == IVTV_ENC_STREAM_TYPE_VBI) | |
585 | ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); | |
586 | else | |
587 | ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); | |
588 | ||
589 | /* you're live! sit back and await interrupts :) */ | |
590 | atomic_inc(&itv->capturing); | |
f8859691 | 591 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
592 | return 0; |
593 | } | |
594 | ||
595 | static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s) | |
596 | { | |
597 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
598 | struct ivtv *itv = s->itv; | |
599 | int datatype; | |
600 | ||
601 | if (s->v4l2dev == NULL) | |
602 | return -EINVAL; | |
603 | ||
604 | IVTV_DEBUG_INFO("Setting some initial decoder settings\n"); | |
605 | ||
606 | /* disable VBI signals, if the MPEG stream contains VBI data, | |
607 | then that data will be processed automatically for you. */ | |
608 | ivtv_disable_vbi(itv); | |
609 | ||
610 | /* set audio mode to left/stereo for dual/stereo mode. */ | |
611 | ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode); | |
612 | ||
613 | /* set number of internal decoder buffers */ | |
614 | ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0); | |
615 | ||
616 | /* prebuffering */ | |
617 | ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1); | |
618 | ||
619 | /* extract from user packets */ | |
620 | ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1); | |
621 | itv->vbi.dec_start = data[0]; | |
622 | ||
623 | IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n", | |
624 | itv->vbi.dec_start, data[1]); | |
625 | ||
626 | /* set decoder source settings */ | |
627 | /* Data type: 0 = mpeg from host, | |
628 | 1 = yuv from encoder, | |
629 | 2 = yuv_from_host */ | |
630 | switch (s->type) { | |
631 | case IVTV_DEC_STREAM_TYPE_YUV: | |
632 | datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2; | |
633 | IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype); | |
634 | break; | |
635 | case IVTV_DEC_STREAM_TYPE_MPG: | |
636 | default: | |
637 | datatype = 0; | |
638 | break; | |
639 | } | |
640 | if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype, | |
641 | itv->params.width, itv->params.height, itv->params.audio_properties)) { | |
642 | IVTV_DEBUG_WARN("COULDN'T INITIALIZE DECODER SOURCE\n"); | |
643 | } | |
644 | return 0; | |
645 | } | |
646 | ||
647 | int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset) | |
648 | { | |
649 | struct ivtv *itv = s->itv; | |
650 | ||
651 | if (s->v4l2dev == NULL) | |
652 | return -EINVAL; | |
653 | ||
654 | if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) | |
655 | return 0; /* already started */ | |
656 | ||
657 | IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset); | |
658 | ||
659 | /* Clear Streamoff */ | |
660 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { | |
661 | /* Initialize Decoder */ | |
662 | /* Reprogram Decoder YUV Buffers for YUV */ | |
663 | write_reg(yuv_offset[0] >> 4, 0x82c); | |
664 | write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830); | |
665 | write_reg(yuv_offset[0] >> 4, 0x834); | |
666 | write_reg((yuv_offset[0] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838); | |
667 | ||
668 | write_reg_sync(0x00000000 | (0x0c << 16) | (0x0b << 8), 0x2d24); | |
669 | ||
670 | write_reg_sync(0x00108080, 0x2898); | |
671 | /* Enable YUV decoder output */ | |
672 | write_reg_sync(0x01, IVTV_REG_VDM); | |
673 | } | |
674 | ||
675 | ivtv_setup_v4l2_decode_stream(s); | |
676 | ||
677 | /* set dma size to 65536 bytes */ | |
678 | ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536); | |
679 | ||
680 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
681 | ||
682 | /* Zero out decoder counters */ | |
683 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[0]); | |
684 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[1]); | |
685 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[2]); | |
686 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_FIELD_DISPLAYED].data[3]); | |
687 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]); | |
688 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]); | |
689 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]); | |
690 | writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]); | |
691 | ||
692 | /* turn on notification of dual/stereo mode change */ | |
693 | ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); | |
694 | ||
695 | /* start playback */ | |
696 | ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0); | |
697 | ||
698 | /* Clear the following Interrupt mask bits for decoding */ | |
699 | ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE); | |
700 | IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask); | |
701 | ||
702 | /* you're live! sit back and await interrupts :) */ | |
703 | atomic_inc(&itv->decoding); | |
704 | return 0; | |
705 | } | |
706 | ||
707 | void ivtv_stop_all_captures(struct ivtv *itv) | |
708 | { | |
709 | int i; | |
710 | ||
711 | for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) { | |
712 | struct ivtv_stream *s = &itv->streams[i]; | |
713 | ||
714 | if (s->v4l2dev == NULL) | |
715 | continue; | |
716 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
717 | ivtv_stop_v4l2_encode_stream(s, 0); | |
718 | } | |
719 | } | |
720 | } | |
721 | ||
722 | int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end) | |
723 | { | |
724 | struct ivtv *itv = s->itv; | |
725 | DECLARE_WAITQUEUE(wait, current); | |
726 | int cap_type; | |
727 | unsigned long then; | |
728 | int stopmode; | |
729 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
730 | ||
731 | if (s->v4l2dev == NULL) | |
732 | return -EINVAL; | |
733 | ||
734 | /* This function assumes that you are allowed to stop the capture | |
735 | and that we are actually capturing */ | |
736 | ||
737 | IVTV_DEBUG_INFO("Stop Capture\n"); | |
738 | ||
739 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) | |
740 | return 0; | |
741 | if (atomic_read(&itv->capturing) == 0) | |
742 | return 0; | |
743 | ||
744 | switch (s->type) { | |
745 | case IVTV_ENC_STREAM_TYPE_YUV: | |
746 | cap_type = 1; | |
747 | break; | |
748 | case IVTV_ENC_STREAM_TYPE_PCM: | |
749 | cap_type = 1; | |
750 | break; | |
751 | case IVTV_ENC_STREAM_TYPE_VBI: | |
752 | cap_type = 1; | |
753 | break; | |
754 | case IVTV_ENC_STREAM_TYPE_MPG: | |
755 | default: | |
756 | cap_type = 0; | |
757 | break; | |
758 | } | |
759 | ||
760 | /* Stop Capture Mode */ | |
761 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { | |
762 | stopmode = 0; | |
763 | } else { | |
764 | stopmode = 1; | |
765 | } | |
766 | ||
767 | /* end_capture */ | |
768 | /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */ | |
769 | ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype); | |
770 | ||
1a0adaf3 HV |
771 | then = jiffies; |
772 | ||
773 | if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) { | |
774 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { | |
775 | /* only run these if we're shutting down the last cap */ | |
776 | unsigned long duration; | |
777 | ||
778 | then = jiffies; | |
779 | add_wait_queue(&itv->cap_w, &wait); | |
780 | ||
781 | set_current_state(TASK_INTERRUPTIBLE); | |
782 | ||
783 | /* wait 2s for EOS interrupt */ | |
201700d3 MCC |
784 | while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && |
785 | jiffies < then + msecs_to_jiffies (2000)) { | |
786 | schedule_timeout(msecs_to_jiffies(10)); | |
1a0adaf3 HV |
787 | } |
788 | ||
789 | /* To convert jiffies to ms, we must multiply by 1000 | |
790 | * and divide by HZ. To avoid runtime division, we | |
791 | * convert this to multiplication by 1000/HZ. | |
792 | * Since integer division truncates, we get the best | |
793 | * accuracy if we do a rounding calculation of the constant. | |
794 | * Think of the case where HZ is 1024. | |
795 | */ | |
796 | duration = ((1000 + HZ / 2) / HZ) * (jiffies - then); | |
797 | ||
798 | if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) { | |
799 | IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name); | |
800 | IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration); | |
801 | } else { | |
802 | IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration); | |
803 | } | |
804 | set_current_state(TASK_RUNNING); | |
805 | remove_wait_queue(&itv->cap_w, &wait); | |
806 | } | |
807 | ||
808 | then = jiffies; | |
809 | /* Make sure DMA is complete */ | |
810 | add_wait_queue(&s->waitq, &wait); | |
1a0adaf3 HV |
811 | do { |
812 | /* check if DMA is pending */ | |
813 | if ((s->type == IVTV_ENC_STREAM_TYPE_MPG) && /* MPG Only */ | |
814 | (read_reg(IVTV_REG_DMASTATUS) & 0x02)) { | |
815 | /* Check for last DMA */ | |
816 | ivtv_vapi_result(itv, data, CX2341X_ENC_GET_SEQ_END, 2, 0, 0); | |
817 | ||
818 | if (data[0] == 1) { | |
819 | IVTV_DEBUG_DMA("%s: Last DMA of size 0x%08x\n", s->name, data[1]); | |
820 | break; | |
821 | } | |
822 | } else if (read_reg(IVTV_REG_DMASTATUS) & 0x02) { | |
823 | break; | |
824 | } | |
201700d3 MCC |
825 | } while (!ivtv_msleep_timeout(10, 1) && |
826 | then + msecs_to_jiffies(2000) > jiffies); | |
1a0adaf3 HV |
827 | |
828 | set_current_state(TASK_RUNNING); | |
829 | remove_wait_queue(&s->waitq, &wait); | |
830 | } | |
831 | ||
832 | atomic_dec(&itv->capturing); | |
833 | ||
834 | /* Clear capture and no-read bits */ | |
835 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
836 | ||
f8859691 HV |
837 | /* ensure these global cleanup actions are done only once */ |
838 | mutex_lock(&itv->serialize_lock); | |
839 | ||
1a0adaf3 HV |
840 | if (s->type == IVTV_ENC_STREAM_TYPE_VBI) |
841 | ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); | |
842 | ||
843 | if (atomic_read(&itv->capturing) > 0) { | |
f8859691 | 844 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
845 | return 0; |
846 | } | |
847 | ||
848 | /* Set the following Interrupt mask bits for capture */ | |
849 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); | |
850 | ||
f8859691 HV |
851 | /* event notification (off) */ |
852 | if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { | |
853 | /* type: 0 = refresh */ | |
854 | /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */ | |
855 | ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1); | |
856 | ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); | |
857 | } | |
858 | ||
1a0adaf3 | 859 | wake_up(&s->waitq); |
f8859691 | 860 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
861 | |
862 | return 0; | |
863 | } | |
864 | ||
865 | int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts) | |
866 | { | |
867 | struct ivtv *itv = s->itv; | |
868 | ||
869 | if (s->v4l2dev == NULL) | |
870 | return -EINVAL; | |
871 | ||
872 | if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG) | |
873 | return -EINVAL; | |
874 | ||
875 | if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags)) | |
876 | return 0; | |
877 | ||
c4385098 | 878 | IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags); |
1a0adaf3 HV |
879 | |
880 | /* Stop Decoder */ | |
881 | if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) { | |
882 | u32 tmp = 0; | |
883 | ||
884 | /* Wait until the decoder is no longer running */ | |
885 | if (pts) { | |
886 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, | |
887 | 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32)); | |
888 | } | |
889 | while (1) { | |
890 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
891 | ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0); | |
892 | if (s->q_full.buffers + s->q_dma.buffers == 0) { | |
893 | if (tmp == data[3]) | |
894 | break; | |
895 | tmp = data[3]; | |
896 | } | |
201700d3 | 897 | if (ivtv_msleep_timeout(100, 1)) |
1a0adaf3 HV |
898 | break; |
899 | } | |
900 | } | |
901 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0); | |
902 | ||
903 | /* turn off notification of dual/stereo mode change */ | |
904 | ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); | |
905 | ||
906 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE); | |
907 | ||
908 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
909 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
910 | ivtv_flush_queues(s); | |
911 | ||
912 | if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) { | |
913 | /* disable VBI on TV-out */ | |
914 | ivtv_disable_vbi(itv); | |
915 | } | |
916 | ||
917 | /* decrement decoding */ | |
918 | atomic_dec(&itv->decoding); | |
919 | ||
920 | set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags); | |
921 | wake_up(&itv->event_waitq); | |
922 | ||
923 | /* wake up wait queues */ | |
924 | wake_up(&s->waitq); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | int ivtv_passthrough_mode(struct ivtv *itv, int enable) | |
930 | { | |
931 | struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV]; | |
932 | struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; | |
933 | ||
934 | if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL) | |
935 | return -EINVAL; | |
936 | ||
937 | IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n"); | |
938 | ||
939 | /* Prevent others from starting/stopping streams while we | |
940 | initiate/terminate passthrough mode */ | |
941 | if (enable) { | |
942 | if (itv->output_mode == OUT_PASSTHROUGH) { | |
943 | return 0; | |
944 | } | |
945 | if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH) | |
946 | return -EBUSY; | |
947 | ||
948 | /* Fully initialize stream, and then unflag init */ | |
949 | set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); | |
950 | set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); | |
951 | ||
952 | /* Setup YUV Decoder */ | |
953 | ivtv_setup_v4l2_decode_stream(dec_stream); | |
954 | ||
955 | /* Start Decoder */ | |
956 | ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1); | |
957 | atomic_inc(&itv->decoding); | |
958 | ||
959 | /* Setup capture if not already done */ | |
960 | if (atomic_read(&itv->capturing) == 0) { | |
961 | cx2341x_update(itv, ivtv_api_func, NULL, &itv->params); | |
962 | } | |
963 | ||
964 | /* Start Passthrough Mode */ | |
965 | ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11); | |
966 | atomic_inc(&itv->capturing); | |
967 | return 0; | |
968 | } | |
969 | ||
970 | if (itv->output_mode != OUT_PASSTHROUGH) | |
971 | return 0; | |
972 | ||
973 | /* Stop Passthrough Mode */ | |
974 | ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11); | |
975 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0); | |
976 | ||
977 | atomic_dec(&itv->capturing); | |
978 | atomic_dec(&itv->decoding); | |
979 | clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); | |
980 | clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); | |
981 | itv->output_mode = OUT_NONE; | |
982 | ||
983 | return 0; | |
984 | } |