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From: Clemens Ladisch <clemens@ladisch.de>
To: Laurence Darby <ldarby@tuffmail.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: [PATCH] ALSA: oxygen: Fix S/PDIF muting
Date: Sun, 28 Jun 2015 20:44:26 +0200	[thread overview]
Message-ID: <5590408A.6030100@ladisch.de> (raw)
In-Reply-To: <20150628131337.d8077aed73a9851b194bdc30@tuffmail.com>

Laurence Darby wrote:
> The S/PDIF output was muted whenever audio wasn't playing which resulted
> in a clicking noise from the DAC when resuming

It indeed appears that there are too many oxygen_clear_bits32() calls.
However, I don't trust the hardware; please confirm that the S/PDIF
output, without an active stream, play zeros and not the last sample.

> Also, the mixer control wasn't actually controlling the S/PDIF output.

Because that is not its purpose to begin with.  >:-)

The mixer control enables copying the "Multichannel" device to the
S/PDIF output.  The "Digital" device has no mute, and takes precedence
over the multichannel device when both are active.


Regards,
Clemens

  reply	other threads:[~2015-06-28 18:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-28 12:13 [PATCH] ALSA: oxygen: Fix S/PDIF muting Laurence Darby
2015-06-28 18:44 ` Clemens Ladisch [this message]
2015-06-29 20:01   ` Laurence Darby
2015-06-30  9:43     ` Clemens Ladisch
2015-07-05 18:56       ` Laurence Darby
2015-07-05 19:23         ` Clemens Ladisch

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