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-queue.h" |
39 | #include "ivtv-mailbox.h" |
40 | #include "ivtv-ioctl.h" |
41 | #include "ivtv-irq.h" |
42 | #include "ivtv-yuv.h" |
43 | #include "ivtv-cards.h" |
44 | #include "ivtv-streams.h" |
45 | #include "ivtv-firmware.h" |
46 | #include <media/v4l2-event.h> |
47 | |
48 | static const struct v4l2_file_operations ivtv_v4l2_enc_fops = { |
49 | .owner = THIS_MODULE, |
50 | .read = ivtv_v4l2_read, |
51 | .write = ivtv_v4l2_write, |
52 | .open = ivtv_v4l2_open, |
53 | .unlocked_ioctl = video_ioctl2, |
54 | #ifdef CONFIG_COMPAT |
55 | .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ |
56 | #endif |
57 | .release = ivtv_v4l2_close, |
58 | .poll = ivtv_v4l2_enc_poll, |
59 | }; |
60 | |
61 | static const struct v4l2_file_operations ivtv_v4l2_dec_fops = { |
62 | .owner = THIS_MODULE, |
63 | .read = ivtv_v4l2_read, |
64 | .write = ivtv_v4l2_write, |
65 | .open = ivtv_v4l2_open, |
66 | .unlocked_ioctl = video_ioctl2, |
67 | #ifdef CONFIG_COMPAT |
68 | .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ |
69 | #endif |
70 | .release = ivtv_v4l2_close, |
71 | .poll = ivtv_v4l2_dec_poll, |
72 | }; |
73 | |
74 | static const struct v4l2_file_operations ivtv_v4l2_radio_fops = { |
75 | .owner = THIS_MODULE, |
76 | .open = ivtv_v4l2_open, |
77 | .unlocked_ioctl = video_ioctl2, |
78 | #ifdef CONFIG_COMPAT |
79 | .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ |
80 | #endif |
81 | .release = ivtv_v4l2_close, |
82 | .poll = ivtv_v4l2_enc_poll, |
83 | }; |
84 | |
85 | #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */ |
86 | #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */ |
87 | #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */ |
88 | #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */ |
89 | #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */ |
90 | #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */ |
91 | |
92 | static struct { |
93 | const char *name; |
94 | int vfl_type; |
95 | int num_offset; |
96 | int dma, pio; |
97 | u32 v4l2_caps; |
98 | const struct v4l2_file_operations *fops; |
99 | } ivtv_stream_info[] = { |
100 | { /* IVTV_ENC_STREAM_TYPE_MPG */ |
101 | "encoder MPG" , |
102 | VFL_TYPE_VIDEO, 0, |
103 | DMA_FROM_DEVICE, 0, |
104 | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | |
105 | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
106 | &ivtv_v4l2_enc_fops |
107 | }, |
108 | { /* IVTV_ENC_STREAM_TYPE_YUV */ |
109 | "encoder YUV" , |
110 | VFL_TYPE_VIDEO, IVTV_V4L2_ENC_YUV_OFFSET, |
111 | DMA_FROM_DEVICE, 0, |
112 | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | |
113 | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
114 | &ivtv_v4l2_enc_fops |
115 | }, |
116 | { /* IVTV_ENC_STREAM_TYPE_VBI */ |
117 | "encoder VBI" , |
118 | VFL_TYPE_VBI, 0, |
119 | DMA_FROM_DEVICE, 0, |
120 | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER | |
121 | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
122 | &ivtv_v4l2_enc_fops |
123 | }, |
124 | { /* IVTV_ENC_STREAM_TYPE_PCM */ |
125 | "encoder PCM" , |
126 | VFL_TYPE_VIDEO, IVTV_V4L2_ENC_PCM_OFFSET, |
127 | DMA_FROM_DEVICE, 0, |
128 | V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
129 | &ivtv_v4l2_enc_fops |
130 | }, |
131 | { /* IVTV_ENC_STREAM_TYPE_RAD */ |
132 | "encoder radio" , |
133 | VFL_TYPE_RADIO, 0, |
134 | DMA_NONE, 1, |
135 | V4L2_CAP_RADIO | V4L2_CAP_TUNER, |
136 | &ivtv_v4l2_radio_fops |
137 | }, |
138 | { /* IVTV_DEC_STREAM_TYPE_MPG */ |
139 | "decoder MPG" , |
140 | VFL_TYPE_VIDEO, IVTV_V4L2_DEC_MPG_OFFSET, |
141 | DMA_TO_DEVICE, 0, |
142 | V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
143 | &ivtv_v4l2_dec_fops |
144 | }, |
145 | { /* IVTV_DEC_STREAM_TYPE_VBI */ |
146 | "decoder VBI" , |
147 | VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET, |
148 | DMA_NONE, 1, |
149 | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE, |
150 | &ivtv_v4l2_enc_fops |
151 | }, |
152 | { /* IVTV_DEC_STREAM_TYPE_VOUT */ |
153 | "decoder VOUT" , |
154 | VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET, |
155 | DMA_NONE, 1, |
156 | V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
157 | &ivtv_v4l2_dec_fops |
158 | }, |
159 | { /* IVTV_DEC_STREAM_TYPE_YUV */ |
160 | "decoder YUV" , |
161 | VFL_TYPE_VIDEO, IVTV_V4L2_DEC_YUV_OFFSET, |
162 | DMA_TO_DEVICE, 0, |
163 | V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, |
164 | &ivtv_v4l2_dec_fops |
165 | } |
166 | }; |
167 | |
168 | static void ivtv_stream_init(struct ivtv *itv, int type) |
169 | { |
170 | struct ivtv_stream *s = &itv->streams[type]; |
171 | |
172 | /* we need to keep vdev, so restore it afterwards */ |
173 | memset(s, 0, sizeof(*s)); |
174 | |
175 | /* initialize ivtv_stream fields */ |
176 | s->itv = itv; |
177 | s->type = type; |
178 | s->name = ivtv_stream_info[type].name; |
179 | s->vdev.device_caps = ivtv_stream_info[type].v4l2_caps; |
180 | |
181 | if (ivtv_stream_info[type].pio) |
182 | s->dma = DMA_NONE; |
183 | else |
184 | s->dma = ivtv_stream_info[type].dma; |
185 | s->buf_size = itv->stream_buf_size[type]; |
186 | if (s->buf_size) |
187 | s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size; |
188 | spin_lock_init(&s->qlock); |
189 | init_waitqueue_head(&s->waitq); |
190 | s->sg_handle = IVTV_DMA_UNMAPPED; |
191 | ivtv_queue_init(q: &s->q_free); |
192 | ivtv_queue_init(q: &s->q_full); |
193 | ivtv_queue_init(q: &s->q_dma); |
194 | ivtv_queue_init(q: &s->q_predma); |
195 | ivtv_queue_init(q: &s->q_io); |
196 | } |
197 | |
198 | static int ivtv_prep_dev(struct ivtv *itv, int type) |
199 | { |
200 | struct ivtv_stream *s = &itv->streams[type]; |
201 | int num_offset = ivtv_stream_info[type].num_offset; |
202 | int num = itv->instance + ivtv_first_minor + num_offset; |
203 | |
204 | /* These four fields are always initialized. If vdev.v4l2_dev == NULL, then |
205 | this stream is not in use. In that case no other fields but these |
206 | four can be used. */ |
207 | s->vdev.v4l2_dev = NULL; |
208 | s->itv = itv; |
209 | s->type = type; |
210 | s->name = ivtv_stream_info[type].name; |
211 | |
212 | /* Check whether the radio is supported */ |
213 | if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO)) |
214 | return 0; |
215 | if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) |
216 | return 0; |
217 | |
218 | /* User explicitly selected 0 buffers for these streams, so don't |
219 | create them. */ |
220 | if (ivtv_stream_info[type].dma != DMA_NONE && |
221 | itv->options.kilobytes[type] == 0) { |
222 | IVTV_INFO("Disabled %s device\n" , ivtv_stream_info[type].name); |
223 | return 0; |
224 | } |
225 | |
226 | ivtv_stream_init(itv, type); |
227 | |
228 | snprintf(buf: s->vdev.name, size: sizeof(s->vdev.name), fmt: "%s %s" , |
229 | itv->v4l2_dev.name, s->name); |
230 | |
231 | s->vdev.num = num; |
232 | s->vdev.v4l2_dev = &itv->v4l2_dev; |
233 | if (ivtv_stream_info[type].v4l2_caps & |
234 | (V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_SLICED_VBI_OUTPUT)) |
235 | s->vdev.vfl_dir = VFL_DIR_TX; |
236 | s->vdev.fops = ivtv_stream_info[type].fops; |
237 | s->vdev.ctrl_handler = itv->v4l2_dev.ctrl_handler; |
238 | s->vdev.release = video_device_release_empty; |
239 | s->vdev.tvnorms = V4L2_STD_ALL; |
240 | s->vdev.lock = &itv->serialize_lock; |
241 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { |
242 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_S_AUDIO); |
243 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_G_AUDIO); |
244 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_ENUMAUDIO); |
245 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_ENUMINPUT); |
246 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_S_INPUT); |
247 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_G_INPUT); |
248 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_S_FREQUENCY); |
249 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_G_FREQUENCY); |
250 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_S_TUNER); |
251 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_G_TUNER); |
252 | v4l2_disable_ioctl(vdev: &s->vdev, VIDIOC_S_STD); |
253 | } |
254 | ivtv_set_funcs(vdev: &s->vdev); |
255 | return 0; |
256 | } |
257 | |
258 | /* Initialize v4l2 variables and prepare v4l2 devices */ |
259 | int ivtv_streams_setup(struct ivtv *itv) |
260 | { |
261 | int type; |
262 | |
263 | /* Setup V4L2 Devices */ |
264 | for (type = 0; type < IVTV_MAX_STREAMS; type++) { |
265 | /* Prepare device */ |
266 | if (ivtv_prep_dev(itv, type)) |
267 | break; |
268 | |
269 | if (itv->streams[type].vdev.v4l2_dev == NULL) |
270 | continue; |
271 | |
272 | /* Allocate Stream */ |
273 | if (ivtv_stream_alloc(s: &itv->streams[type])) |
274 | break; |
275 | } |
276 | if (type == IVTV_MAX_STREAMS) |
277 | return 0; |
278 | |
279 | /* One or more streams could not be initialized. Clean 'em all up. */ |
280 | ivtv_streams_cleanup(itv); |
281 | return -ENOMEM; |
282 | } |
283 | |
284 | static int ivtv_reg_dev(struct ivtv *itv, int type) |
285 | { |
286 | struct ivtv_stream *s = &itv->streams[type]; |
287 | int vfl_type = ivtv_stream_info[type].vfl_type; |
288 | const char *name; |
289 | int num; |
290 | |
291 | if (s->vdev.v4l2_dev == NULL) |
292 | return 0; |
293 | |
294 | num = s->vdev.num; |
295 | /* card number + user defined offset + device offset */ |
296 | if (type != IVTV_ENC_STREAM_TYPE_MPG) { |
297 | struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG]; |
298 | |
299 | if (s_mpg->vdev.v4l2_dev) |
300 | num = s_mpg->vdev.num + ivtv_stream_info[type].num_offset; |
301 | } |
302 | if (itv->osd_video_pbase && (type == IVTV_DEC_STREAM_TYPE_YUV || |
303 | type == IVTV_DEC_STREAM_TYPE_MPG)) { |
304 | s->vdev.device_caps |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY; |
305 | itv->v4l2_cap |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY; |
306 | } |
307 | video_set_drvdata(vdev: &s->vdev, data: s); |
308 | |
309 | /* Register device. First try the desired minor, then any free one. */ |
310 | if (video_register_device_no_warn(vdev: &s->vdev, type: vfl_type, nr: num)) { |
311 | IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n" , |
312 | s->name, num); |
313 | return -ENOMEM; |
314 | } |
315 | name = video_device_node_name(vdev: &s->vdev); |
316 | |
317 | switch (vfl_type) { |
318 | case VFL_TYPE_VIDEO: |
319 | IVTV_INFO("Registered device %s for %s (%d kB)\n" , |
320 | name, s->name, itv->options.kilobytes[type]); |
321 | break; |
322 | case VFL_TYPE_RADIO: |
323 | IVTV_INFO("Registered device %s for %s\n" , |
324 | name, s->name); |
325 | break; |
326 | case VFL_TYPE_VBI: |
327 | if (itv->options.kilobytes[type]) |
328 | IVTV_INFO("Registered device %s for %s (%d kB)\n" , |
329 | name, s->name, itv->options.kilobytes[type]); |
330 | else |
331 | IVTV_INFO("Registered device %s for %s\n" , |
332 | name, s->name); |
333 | break; |
334 | } |
335 | return 0; |
336 | } |
337 | |
338 | /* Register v4l2 devices */ |
339 | int ivtv_streams_register(struct ivtv *itv) |
340 | { |
341 | int type; |
342 | int err = 0; |
343 | |
344 | /* Register V4L2 devices */ |
345 | for (type = 0; type < IVTV_MAX_STREAMS; type++) |
346 | err |= ivtv_reg_dev(itv, type); |
347 | |
348 | if (err == 0) |
349 | return 0; |
350 | |
351 | /* One or more streams could not be initialized. Clean 'em all up. */ |
352 | ivtv_streams_cleanup(itv); |
353 | return -ENOMEM; |
354 | } |
355 | |
356 | /* Unregister v4l2 devices */ |
357 | void ivtv_streams_cleanup(struct ivtv *itv) |
358 | { |
359 | int type; |
360 | |
361 | /* Teardown all streams */ |
362 | for (type = 0; type < IVTV_MAX_STREAMS; type++) { |
363 | struct video_device *vdev = &itv->streams[type].vdev; |
364 | |
365 | if (vdev->v4l2_dev == NULL) |
366 | continue; |
367 | |
368 | video_unregister_device(vdev); |
369 | ivtv_stream_free(s: &itv->streams[type]); |
370 | itv->streams[type].vdev.v4l2_dev = NULL; |
371 | } |
372 | } |
373 | |
374 | static void ivtv_vbi_setup(struct ivtv *itv) |
375 | { |
376 | int raw = ivtv_raw_vbi(itv); |
377 | u32 data[CX2341X_MBOX_MAX_DATA]; |
378 | int lines; |
379 | int i; |
380 | |
381 | /* Reset VBI */ |
382 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, args: 5, 0xffff , 0, 0, 0, 0); |
383 | |
384 | /* setup VBI registers */ |
385 | if (raw) |
386 | v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi); |
387 | else |
388 | v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced); |
389 | |
390 | /* determine number of lines and total number of VBI bytes. |
391 | A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 |
392 | The '- 1' byte is probably an unused U or V byte. Or something... |
393 | A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal |
394 | header, 42 data bytes + checksum (to be confirmed) */ |
395 | if (raw) { |
396 | lines = itv->vbi.count * 2; |
397 | } else { |
398 | lines = itv->is_60hz ? 24 : 38; |
399 | if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840)) |
400 | lines += 2; |
401 | } |
402 | |
403 | itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); |
404 | |
405 | /* Note: sliced vs raw flag doesn't seem to have any effect |
406 | TODO: check mode (0x02) value with older ivtv versions. */ |
407 | data[0] = raw | 0x02 | (0xbd << 8); |
408 | |
409 | /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */ |
410 | data[1] = 1; |
411 | /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */ |
412 | data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size); |
413 | /* The start/stop codes determine which VBI lines end up in the raw VBI data area. |
414 | The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line |
415 | is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video) |
416 | code. These values for raw VBI are obtained from a driver disassembly. The sliced |
417 | start/stop codes was deduced from this, but they do not appear in the driver. |
418 | Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54. |
419 | However, I have no idea what these values are for. */ |
420 | if (itv->hw_flags & IVTV_HW_CX25840) { |
421 | /* Setup VBI for the cx25840 digitizer */ |
422 | if (raw) { |
423 | data[3] = 0x20602060; |
424 | data[4] = 0x30703070; |
425 | } else { |
426 | data[3] = 0xB0F0B0F0; |
427 | data[4] = 0xA0E0A0E0; |
428 | } |
429 | /* Lines per frame */ |
430 | data[5] = lines; |
431 | /* bytes per line */ |
432 | data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); |
433 | } else { |
434 | /* Setup VBI for the saa7115 digitizer */ |
435 | if (raw) { |
436 | data[3] = 0x25256262; |
437 | data[4] = 0x387F7F7F; |
438 | } else { |
439 | data[3] = 0xABABECEC; |
440 | data[4] = 0xB6F1F1F1; |
441 | } |
442 | /* Lines per frame */ |
443 | data[5] = lines; |
444 | /* bytes per line */ |
445 | data[6] = itv->vbi.enc_size / lines; |
446 | } |
447 | |
448 | IVTV_DEBUG_INFO( |
449 | "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n" , |
450 | data[0], data[1], data[2], data[5], data[6]); |
451 | |
452 | ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, args: 7, data); |
453 | |
454 | /* returns the VBI encoder memory area. */ |
455 | itv->vbi.enc_start = data[2]; |
456 | itv->vbi.fpi = data[0]; |
457 | if (!itv->vbi.fpi) |
458 | itv->vbi.fpi = 1; |
459 | |
460 | IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n" , |
461 | itv->vbi.enc_start, data[1], itv->vbi.fpi); |
462 | |
463 | /* select VBI lines. |
464 | Note that the sliced argument seems to have no effect. */ |
465 | for (i = 2; i <= 24; i++) { |
466 | int valid; |
467 | |
468 | if (itv->is_60hz) { |
469 | valid = i >= 10 && i < 22; |
470 | } else { |
471 | valid = i >= 6 && i < 24; |
472 | } |
473 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, args: 5, i - 1, |
474 | valid, 0 , 0, 0); |
475 | ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, args: 5, (i - 1) | 0x80000000, |
476 | valid, 0, 0, 0); |
477 | } |
478 | |
479 | /* Remaining VBI questions: |
480 | - Is it possible to select particular VBI lines only for inclusion in the MPEG |
481 | stream? Currently you can only get the first X lines. |
482 | - Is mixed raw and sliced VBI possible? |
483 | - What's the meaning of the raw/sliced flag? |
484 | - What's the meaning of params 2, 3 & 4 of the Select VBI command? */ |
485 | } |
486 | |
487 | int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) |
488 | { |
489 | u32 data[CX2341X_MBOX_MAX_DATA]; |
490 | struct ivtv *itv = s->itv; |
491 | int captype = 0, subtype = 0; |
492 | int enable_passthrough = 0; |
493 | |
494 | if (s->vdev.v4l2_dev == NULL) |
495 | return -EINVAL; |
496 | |
497 | IVTV_DEBUG_INFO("Start encoder stream %s\n" , s->name); |
498 | |
499 | switch (s->type) { |
500 | case IVTV_ENC_STREAM_TYPE_MPG: |
501 | captype = 0; |
502 | subtype = 3; |
503 | |
504 | /* Stop Passthrough */ |
505 | if (itv->output_mode == OUT_PASSTHROUGH) { |
506 | ivtv_passthrough_mode(itv, enable: 0); |
507 | enable_passthrough = 1; |
508 | } |
509 | itv->mpg_data_received = itv->vbi_data_inserted = 0; |
510 | itv->dualwatch_jiffies = jiffies; |
511 | itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(ctrl: itv->cxhdl.audio_mode); |
512 | itv->search_pack_header = 0; |
513 | break; |
514 | |
515 | case IVTV_ENC_STREAM_TYPE_YUV: |
516 | if (itv->output_mode == OUT_PASSTHROUGH) { |
517 | captype = 2; |
518 | subtype = 11; /* video+audio+decoder */ |
519 | break; |
520 | } |
521 | captype = 1; |
522 | subtype = 1; |
523 | break; |
524 | case IVTV_ENC_STREAM_TYPE_PCM: |
525 | captype = 1; |
526 | subtype = 2; |
527 | break; |
528 | case IVTV_ENC_STREAM_TYPE_VBI: |
529 | captype = 1; |
530 | subtype = 4; |
531 | |
532 | itv->vbi.frame = 0; |
533 | itv->vbi.inserted_frame = 0; |
534 | memset(itv->vbi.sliced_mpeg_size, |
535 | 0, sizeof(itv->vbi.sliced_mpeg_size)); |
536 | break; |
537 | default: |
538 | return -EINVAL; |
539 | } |
540 | s->subtype = subtype; |
541 | s->buffers_stolen = 0; |
542 | |
543 | /* Clear Streamoff flags in case left from last capture */ |
544 | clear_bit(IVTV_F_S_STREAMOFF, addr: &s->s_flags); |
545 | |
546 | if (atomic_read(v: &itv->capturing) == 0) { |
547 | int digitizer; |
548 | |
549 | /* Always use frame based mode. Experiments have demonstrated that byte |
550 | stream based mode results in dropped frames and corruption. Not often, |
551 | but occasionally. Many thanks go to Leonard Orb who spent a lot of |
552 | effort and time trying to trace the cause of the drop outs. */ |
553 | /* 1 frame per DMA */ |
554 | /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */ |
555 | ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, args: 2, 1, 1); |
556 | |
557 | /* Stuff from Windows, we don't know what it is */ |
558 | ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, args: 1, 0); |
559 | /* According to the docs, this should be correct. However, this is |
560 | untested. I don't dare enable this without having tested it. |
561 | Only very few old cards actually have this hardware combination. |
562 | ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, |
563 | ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0); |
564 | */ |
565 | ivtv_vapi(itv, CX2341X_ENC_MISC, args: 2, 3, !itv->has_cx23415); |
566 | ivtv_vapi(itv, CX2341X_ENC_MISC, args: 2, 8, 0); |
567 | ivtv_vapi(itv, CX2341X_ENC_MISC, args: 2, 4, 1); |
568 | ivtv_vapi(itv, CX2341X_ENC_MISC, args: 1, 12); |
569 | |
570 | /* assign placeholder */ |
571 | ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, args: 12, |
572 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); |
573 | |
574 | if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X)) |
575 | digitizer = 0xF1; |
576 | else if (itv->card->hw_all & IVTV_HW_SAA7114) |
577 | digitizer = 0xEF; |
578 | else /* cx25840 */ |
579 | digitizer = 0x140; |
580 | |
581 | ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, args: 2, digitizer, digitizer); |
582 | |
583 | /* Setup VBI */ |
584 | if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) { |
585 | ivtv_vbi_setup(itv); |
586 | } |
587 | |
588 | /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */ |
589 | ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, args: 2, 7, 400); |
590 | itv->pgm_info_offset = data[0]; |
591 | itv->pgm_info_num = data[1]; |
592 | itv->pgm_info_write_idx = 0; |
593 | itv->pgm_info_read_idx = 0; |
594 | |
595 | IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n" , |
596 | itv->pgm_info_offset, itv->pgm_info_num); |
597 | |
598 | /* Setup API for Stream */ |
599 | cx2341x_handler_setup(cxhdl: &itv->cxhdl); |
600 | |
601 | /* mute if capturing radio */ |
602 | if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) |
603 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, args: 1, |
604 | 1 | (v4l2_ctrl_g_ctrl(ctrl: itv->cxhdl.video_mute_yuv) << 8)); |
605 | } |
606 | |
607 | /* Vsync Setup */ |
608 | if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, addr: &itv->i_flags)) { |
609 | /* event notification (on) */ |
610 | ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, args: 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1); |
611 | ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); |
612 | } |
613 | |
614 | if (atomic_read(v: &itv->capturing) == 0) { |
615 | /* Clear all Pending Interrupts */ |
616 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); |
617 | |
618 | clear_bit(IVTV_F_I_EOS, addr: &itv->i_flags); |
619 | |
620 | cx2341x_handler_set_busy(cxhdl: &itv->cxhdl, busy: 1); |
621 | |
622 | /* Initialize Digitizer for Capture */ |
623 | /* Avoid tinny audio problem - ensure audio clocks are going */ |
624 | v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1); |
625 | /* Avoid unpredictable PCI bus hang - disable video clocks */ |
626 | if (itv->sd_video_is_streaming) |
627 | v4l2_subdev_call(itv->sd_video, video, s_stream, 0); |
628 | ivtv_msleep_timeout(msecs: 300, intr: 0); |
629 | ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, args: 0); |
630 | v4l2_subdev_call(itv->sd_video, video, s_stream, 1); |
631 | itv->sd_video_is_streaming = true; |
632 | } |
633 | |
634 | /* begin_capture */ |
635 | if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, args: 2, captype, subtype)) |
636 | { |
637 | IVTV_DEBUG_WARN( "Error starting capture!\n" ); |
638 | return -EINVAL; |
639 | } |
640 | |
641 | /* Start Passthrough */ |
642 | if (enable_passthrough) { |
643 | ivtv_passthrough_mode(itv, enable: 1); |
644 | } |
645 | |
646 | if (s->type == IVTV_ENC_STREAM_TYPE_VBI) |
647 | ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); |
648 | else |
649 | ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); |
650 | |
651 | /* you're live! sit back and await interrupts :) */ |
652 | atomic_inc(v: &itv->capturing); |
653 | return 0; |
654 | } |
655 | EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream); |
656 | |
657 | static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s) |
658 | { |
659 | u32 data[CX2341X_MBOX_MAX_DATA]; |
660 | struct ivtv *itv = s->itv; |
661 | int datatype; |
662 | u16 width; |
663 | u16 height; |
664 | |
665 | if (s->vdev.v4l2_dev == NULL) |
666 | return -EINVAL; |
667 | |
668 | IVTV_DEBUG_INFO("Setting some initial decoder settings\n" ); |
669 | |
670 | width = itv->cxhdl.width; |
671 | height = itv->cxhdl.height; |
672 | |
673 | /* set audio mode to left/stereo for dual/stereo mode. */ |
674 | ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, args: 2, itv->audio_bilingual_mode, itv->audio_stereo_mode); |
675 | |
676 | /* set number of internal decoder buffers */ |
677 | ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, args: 1, 0); |
678 | |
679 | /* prebuffering */ |
680 | ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, args: 1, 1); |
681 | |
682 | /* extract from user packets */ |
683 | ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, args: 1, 1); |
684 | itv->vbi.dec_start = data[0]; |
685 | |
686 | IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n" , |
687 | itv->vbi.dec_start, data[1]); |
688 | |
689 | /* set decoder source settings */ |
690 | /* Data type: 0 = mpeg from host, |
691 | 1 = yuv from encoder, |
692 | 2 = yuv_from_host */ |
693 | switch (s->type) { |
694 | case IVTV_DEC_STREAM_TYPE_YUV: |
695 | if (itv->output_mode == OUT_PASSTHROUGH) { |
696 | datatype = 1; |
697 | } else { |
698 | /* Fake size to avoid switching video standard */ |
699 | datatype = 2; |
700 | width = 720; |
701 | height = itv->is_out_50hz ? 576 : 480; |
702 | } |
703 | IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n" , datatype); |
704 | break; |
705 | case IVTV_DEC_STREAM_TYPE_MPG: |
706 | default: |
707 | datatype = 0; |
708 | break; |
709 | } |
710 | if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, args: 4, datatype, |
711 | width, height, itv->cxhdl.audio_properties)) { |
712 | IVTV_DEBUG_WARN("Couldn't initialize decoder source\n" ); |
713 | } |
714 | |
715 | /* Decoder sometimes dies here, so wait a moment */ |
716 | ivtv_msleep_timeout(msecs: 10, intr: 0); |
717 | |
718 | /* Known failure point for firmware, so check */ |
719 | return ivtv_firmware_check(itv, where: "ivtv_setup_v4l2_decode_stream" ); |
720 | } |
721 | |
722 | int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset) |
723 | { |
724 | struct ivtv *itv = s->itv; |
725 | int rc; |
726 | |
727 | if (s->vdev.v4l2_dev == NULL) |
728 | return -EINVAL; |
729 | |
730 | if (test_and_set_bit(IVTV_F_S_STREAMING, addr: &s->s_flags)) |
731 | return 0; /* already started */ |
732 | |
733 | IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n" , s->name, gop_offset); |
734 | |
735 | rc = ivtv_setup_v4l2_decode_stream(s); |
736 | if (rc < 0) { |
737 | clear_bit(IVTV_F_S_STREAMING, addr: &s->s_flags); |
738 | return rc; |
739 | } |
740 | |
741 | /* set dma size to 65536 bytes */ |
742 | ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, args: 1, 65536); |
743 | |
744 | /* Clear Streamoff */ |
745 | clear_bit(IVTV_F_S_STREAMOFF, addr: &s->s_flags); |
746 | |
747 | /* Zero out decoder counters */ |
748 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]); |
749 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]); |
750 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]); |
751 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]); |
752 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]); |
753 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]); |
754 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]); |
755 | writel(val: 0, addr: &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]); |
756 | |
757 | /* turn on notification of dual/stereo mode change */ |
758 | ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, args: 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); |
759 | |
760 | /* start playback */ |
761 | ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, args: 2, gop_offset, 0); |
762 | |
763 | /* Let things settle before we actually start */ |
764 | ivtv_msleep_timeout(msecs: 10, intr: 0); |
765 | |
766 | /* Clear the following Interrupt mask bits for decoding */ |
767 | ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE); |
768 | IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n" , itv->irqmask); |
769 | |
770 | /* you're live! sit back and await interrupts :) */ |
771 | atomic_inc(v: &itv->decoding); |
772 | return 0; |
773 | } |
774 | |
775 | void ivtv_stop_all_captures(struct ivtv *itv) |
776 | { |
777 | int i; |
778 | |
779 | for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) { |
780 | struct ivtv_stream *s = &itv->streams[i]; |
781 | |
782 | if (s->vdev.v4l2_dev == NULL) |
783 | continue; |
784 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { |
785 | ivtv_stop_v4l2_encode_stream(s, gop_end: 0); |
786 | } |
787 | } |
788 | } |
789 | |
790 | int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end) |
791 | { |
792 | struct ivtv *itv = s->itv; |
793 | DECLARE_WAITQUEUE(wait, current); |
794 | int cap_type; |
795 | int stopmode; |
796 | |
797 | if (s->vdev.v4l2_dev == NULL) |
798 | return -EINVAL; |
799 | |
800 | /* This function assumes that you are allowed to stop the capture |
801 | and that we are actually capturing */ |
802 | |
803 | IVTV_DEBUG_INFO("Stop Capture\n" ); |
804 | |
805 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) |
806 | return 0; |
807 | if (atomic_read(v: &itv->capturing) == 0) |
808 | return 0; |
809 | |
810 | switch (s->type) { |
811 | case IVTV_ENC_STREAM_TYPE_YUV: |
812 | cap_type = 1; |
813 | break; |
814 | case IVTV_ENC_STREAM_TYPE_PCM: |
815 | cap_type = 1; |
816 | break; |
817 | case IVTV_ENC_STREAM_TYPE_VBI: |
818 | cap_type = 1; |
819 | break; |
820 | case IVTV_ENC_STREAM_TYPE_MPG: |
821 | default: |
822 | cap_type = 0; |
823 | break; |
824 | } |
825 | |
826 | /* Stop Capture Mode */ |
827 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { |
828 | stopmode = 0; |
829 | } else { |
830 | stopmode = 1; |
831 | } |
832 | |
833 | /* end_capture */ |
834 | /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */ |
835 | ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, args: 3, stopmode, cap_type, s->subtype); |
836 | |
837 | if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) { |
838 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { |
839 | /* only run these if we're shutting down the last cap */ |
840 | unsigned long duration; |
841 | unsigned long then = jiffies; |
842 | |
843 | add_wait_queue(wq_head: &itv->eos_waitq, wq_entry: &wait); |
844 | |
845 | set_current_state(TASK_INTERRUPTIBLE); |
846 | |
847 | /* wait 2s for EOS interrupt */ |
848 | while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && |
849 | time_before(jiffies, |
850 | then + msecs_to_jiffies(2000))) { |
851 | schedule_timeout(timeout: msecs_to_jiffies(m: 10)); |
852 | } |
853 | |
854 | /* To convert jiffies to ms, we must multiply by 1000 |
855 | * and divide by HZ. To avoid runtime division, we |
856 | * convert this to multiplication by 1000/HZ. |
857 | * Since integer division truncates, we get the best |
858 | * accuracy if we do a rounding calculation of the constant. |
859 | * Think of the case where HZ is 1024. |
860 | */ |
861 | duration = ((1000 + HZ / 2) / HZ) * (jiffies - then); |
862 | |
863 | if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) { |
864 | IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n" , s->name); |
865 | IVTV_DEBUG_WARN("%s: waited %lu ms.\n" , s->name, duration); |
866 | } else { |
867 | IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n" , s->name, duration); |
868 | } |
869 | set_current_state(TASK_RUNNING); |
870 | remove_wait_queue(wq_head: &itv->eos_waitq, wq_entry: &wait); |
871 | set_bit(IVTV_F_S_STREAMOFF, addr: &s->s_flags); |
872 | } |
873 | |
874 | /* Handle any pending interrupts */ |
875 | ivtv_msleep_timeout(msecs: 100, intr: 0); |
876 | } |
877 | |
878 | atomic_dec(v: &itv->capturing); |
879 | |
880 | /* Clear capture and no-read bits */ |
881 | clear_bit(IVTV_F_S_STREAMING, addr: &s->s_flags); |
882 | |
883 | if (s->type == IVTV_ENC_STREAM_TYPE_VBI) |
884 | ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); |
885 | |
886 | if (atomic_read(v: &itv->capturing) > 0) { |
887 | return 0; |
888 | } |
889 | |
890 | cx2341x_handler_set_busy(cxhdl: &itv->cxhdl, busy: 0); |
891 | |
892 | /* Set the following Interrupt mask bits for capture */ |
893 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); |
894 | del_timer(timer: &itv->dma_timer); |
895 | |
896 | /* event notification (off) */ |
897 | if (test_and_clear_bit(IVTV_F_I_DIG_RST, addr: &itv->i_flags)) { |
898 | /* type: 0 = refresh */ |
899 | /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */ |
900 | ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, args: 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1); |
901 | ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); |
902 | } |
903 | |
904 | /* Raw-passthrough is implied on start. Make sure it's stopped so |
905 | the encoder will re-initialize when next started */ |
906 | ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, args: 3, 1, 2, 7); |
907 | |
908 | wake_up(&s->waitq); |
909 | |
910 | return 0; |
911 | } |
912 | EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream); |
913 | |
914 | int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts) |
915 | { |
916 | static const struct v4l2_event ev = { |
917 | .type = V4L2_EVENT_EOS, |
918 | }; |
919 | struct ivtv *itv = s->itv; |
920 | |
921 | if (s->vdev.v4l2_dev == NULL) |
922 | return -EINVAL; |
923 | |
924 | if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG) |
925 | return -EINVAL; |
926 | |
927 | if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags)) |
928 | return 0; |
929 | |
930 | IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n" , (unsigned long long)pts, flags); |
931 | |
932 | /* Stop Decoder */ |
933 | if (!(flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) || pts) { |
934 | u32 tmp = 0; |
935 | |
936 | /* Wait until the decoder is no longer running */ |
937 | if (pts) { |
938 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, args: 3, |
939 | 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32)); |
940 | } |
941 | while (1) { |
942 | u32 data[CX2341X_MBOX_MAX_DATA]; |
943 | ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, args: 0); |
944 | if (s->q_full.buffers + s->q_dma.buffers == 0) { |
945 | if (tmp == data[3]) |
946 | break; |
947 | tmp = data[3]; |
948 | } |
949 | if (ivtv_msleep_timeout(msecs: 100, intr: 1)) |
950 | break; |
951 | } |
952 | } |
953 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, args: 3, flags & V4L2_DEC_CMD_STOP_TO_BLACK, 0, 0); |
954 | |
955 | /* turn off notification of dual/stereo mode change */ |
956 | ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, args: 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); |
957 | |
958 | ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE); |
959 | del_timer(timer: &itv->dma_timer); |
960 | |
961 | clear_bit(IVTV_F_S_NEEDS_DATA, addr: &s->s_flags); |
962 | clear_bit(IVTV_F_S_STREAMING, addr: &s->s_flags); |
963 | ivtv_flush_queues(s); |
964 | |
965 | /* decoder needs time to settle */ |
966 | ivtv_msleep_timeout(msecs: 40, intr: 0); |
967 | |
968 | /* decrement decoding */ |
969 | atomic_dec(v: &itv->decoding); |
970 | |
971 | set_bit(IVTV_F_I_EV_DEC_STOPPED, addr: &itv->i_flags); |
972 | wake_up(&itv->event_waitq); |
973 | v4l2_event_queue(vdev: &s->vdev, ev: &ev); |
974 | |
975 | /* wake up wait queues */ |
976 | wake_up(&s->waitq); |
977 | |
978 | return 0; |
979 | } |
980 | |
981 | int ivtv_passthrough_mode(struct ivtv *itv, int enable) |
982 | { |
983 | struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV]; |
984 | struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; |
985 | |
986 | if (yuv_stream->vdev.v4l2_dev == NULL || dec_stream->vdev.v4l2_dev == NULL) |
987 | return -EINVAL; |
988 | |
989 | IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n" ); |
990 | |
991 | /* Prevent others from starting/stopping streams while we |
992 | initiate/terminate passthrough mode */ |
993 | if (enable) { |
994 | if (itv->output_mode == OUT_PASSTHROUGH) { |
995 | return 0; |
996 | } |
997 | if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH) |
998 | return -EBUSY; |
999 | |
1000 | /* Fully initialize stream, and then unflag init */ |
1001 | set_bit(IVTV_F_S_PASSTHROUGH, addr: &dec_stream->s_flags); |
1002 | set_bit(IVTV_F_S_STREAMING, addr: &dec_stream->s_flags); |
1003 | |
1004 | /* Setup YUV Decoder */ |
1005 | ivtv_setup_v4l2_decode_stream(s: dec_stream); |
1006 | |
1007 | /* Start Decoder */ |
1008 | ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, args: 2, 0, 1); |
1009 | atomic_inc(v: &itv->decoding); |
1010 | |
1011 | /* Setup capture if not already done */ |
1012 | if (atomic_read(v: &itv->capturing) == 0) { |
1013 | cx2341x_handler_setup(cxhdl: &itv->cxhdl); |
1014 | cx2341x_handler_set_busy(cxhdl: &itv->cxhdl, busy: 1); |
1015 | } |
1016 | |
1017 | /* Start Passthrough Mode */ |
1018 | ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, args: 2, 2, 11); |
1019 | atomic_inc(v: &itv->capturing); |
1020 | return 0; |
1021 | } |
1022 | |
1023 | if (itv->output_mode != OUT_PASSTHROUGH) |
1024 | return 0; |
1025 | |
1026 | /* Stop Passthrough Mode */ |
1027 | ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, args: 3, 1, 2, 11); |
1028 | ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, args: 3, 1, 0, 0); |
1029 | |
1030 | atomic_dec(v: &itv->capturing); |
1031 | atomic_dec(v: &itv->decoding); |
1032 | clear_bit(IVTV_F_S_PASSTHROUGH, addr: &dec_stream->s_flags); |
1033 | clear_bit(IVTV_F_S_STREAMING, addr: &dec_stream->s_flags); |
1034 | itv->output_mode = OUT_NONE; |
1035 | if (atomic_read(v: &itv->capturing) == 0) |
1036 | cx2341x_handler_set_busy(cxhdl: &itv->cxhdl, busy: 0); |
1037 | |
1038 | return 0; |
1039 | } |
1040 | |