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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2015-02-13 15:14:07 -0600 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-02-20 17:30:06 +0100 |
| commit | 9e94df3a624b1b485f2c2ac5ab94032da01e45b3 (patch) | |
| tree | be9e24bfccd220394e2150934e0d64adf4811c32 /sound/pci | |
| parent | 3179f62001880e588e229db3006a59ad87b7792a (diff) | |
| download | linux-9e94df3a624b1b485f2c2ac5ab94032da01e45b3.tar.gz linux-9e94df3a624b1b485f2c2ac5ab94032da01e45b3.tar.bz2 linux-9e94df3a624b1b485f2c2ac5ab94032da01e45b3.zip | |
ALSA: hda: replace .wallclock by .get_time_info
No real functional change, only take wall clock and system time
in same routine and add accuracy report.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_controller.c | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index dfcb5e929f9f..7806f1d297cb 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -732,17 +732,32 @@ static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream) azx_get_position(chip, azx_dev)); } -static int azx_get_wallclock_tstamp(struct snd_pcm_substream *substream, - struct timespec *ts) +static int azx_get_time_info(struct snd_pcm_substream *substream, + struct timespec *system_ts, struct timespec *audio_ts, + struct snd_pcm_audio_tstamp_config *audio_tstamp_config, + struct snd_pcm_audio_tstamp_report *audio_tstamp_report) { struct azx_dev *azx_dev = get_azx_dev(substream); u64 nsec; - nsec = timecounter_read(&azx_dev->azx_tc); - nsec = div_u64(nsec, 3); /* can be optimized */ - nsec = azx_adjust_codec_delay(substream, nsec); + if ((substream->runtime->hw.info & SNDRV_PCM_INFO_HAS_LINK_ATIME) && + (audio_tstamp_config->type_requested == SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK)) { - *ts = ns_to_timespec(nsec); + snd_pcm_gettime(substream->runtime, system_ts); + + nsec = timecounter_read(&azx_dev->azx_tc); + nsec = div_u64(nsec, 3); /* can be optimized */ + if (audio_tstamp_config->report_delay) + nsec = azx_adjust_codec_delay(substream, nsec); + + *audio_ts = ns_to_timespec(nsec); + + audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK; + audio_tstamp_report->accuracy_report = 1; /* rest of structure is valid */ + audio_tstamp_report->accuracy = 42; /* 24 MHz WallClock == 42ns resolution */ + + } else + audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT; return 0; } @@ -756,7 +771,8 @@ static struct snd_pcm_hardware azx_pcm_hw = { /* SNDRV_PCM_INFO_RESUME |*/ SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START | - SNDRV_PCM_INFO_HAS_WALL_CLOCK | + SNDRV_PCM_INFO_HAS_WALL_CLOCK | /* legacy */ + SNDRV_PCM_INFO_HAS_LINK_ATIME | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_48000, @@ -842,10 +858,12 @@ static int azx_pcm_open(struct snd_pcm_substream *substream) return -EINVAL; } - /* disable WALLCLOCK timestamps for capture streams + /* disable LINK_ATIME timestamps for capture streams until we figure out how to handle digital inputs */ - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) - runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; /* legacy */ + runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_LINK_ATIME; + } spin_lock_irqsave(&chip->reg_lock, flags); azx_dev->substream = substream; @@ -877,7 +895,7 @@ static struct snd_pcm_ops azx_pcm_ops = { .prepare = azx_pcm_prepare, .trigger = azx_pcm_trigger, .pointer = azx_pcm_pointer, - .wall_clock = azx_get_wallclock_tstamp, + .get_time_info = azx_get_time_info, .mmap = azx_pcm_mmap, .page = snd_pcm_sgbuf_ops_page, }; |