From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: alsa-devel@alsa-project.org
Subject: Re: [PATCH 2/2] ALSA: hda: support for wallclock timestamps
Date: Sat, 29 Sep 2012 15:12:29 -0500 [thread overview]
Message-ID: <5067562D.50704@linux.intel.com> (raw)
In-Reply-To: <50656F02.5030005@ladisch.de>
On 09/28/2012 04:33 AM, Clemens Ladisch wrote:
> Pierre-Louis Bossart wrote:
>> @@ -1712,6 +1777,7 @@ 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 |
>
> ... but not if this device is connected to an S/PDIF input.
Yeah, but I can't figure out what happens here. HDAudio is the clock
master in all cases, unless the audio codec does an ASRC I don't think
this works. I've looked at the spec several times, asked around, this
case looks wild.
next prev parent reply other threads:[~2012-09-29 20:12 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-28 8:15 [PATCH 1/2] ALSA: core: add hooks for audio timestamps Pierre-Louis Bossart
2012-09-28 8:15 ` [PATCH 2/2] ALSA: hda: support for wallclock timestamps Pierre-Louis Bossart
2012-09-28 9:33 ` Clemens Ladisch
2012-09-29 20:12 ` Pierre-Louis Bossart [this message]
2012-09-30 10:12 ` Clemens Ladisch
2012-09-29 1:47 ` Raymond Yau
2012-09-28 9:33 ` [PATCH 1/2] ALSA: core: add hooks for audio timestamps Clemens Ladisch
2012-09-29 20:17 ` Pierre-Louis Bossart
2012-09-30 10:11 ` Clemens Ladisch
-- strict thread matches above, loose matches on Subject: below --
2012-06-28 21:12 [PATCH 0/2] RFC: support for audio wall clock Pierre-Louis Bossart
2012-06-28 21:12 ` [PATCH 2/2] ALSA: hda: support for wallclock timestamps Pierre-Louis Bossart
2012-06-13 20:26 [PATCH 0/2] RFC: support for audio wall clock Pierre-Louis Bossart
2012-06-13 20:26 ` [PATCH 2/2] ALSA: hda: support for wallclock timestamps Pierre-Louis Bossart
2012-06-14 3:32 ` Wang Xingchao
2012-06-14 4:57 ` Pierre-Louis Bossart
2012-06-14 8:15 ` Clemens Ladisch
2012-06-14 17:01 ` Pierre-Louis Bossart
2012-06-14 7:38 ` Takashi Iwai
2012-06-15 10:02 ` Pierre-Louis Bossart
2012-06-15 10:34 ` Takashi Iwai
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