[alsa-devel] [PATCH v3 4/8] ASoC: sun8i-codec-analog: Add amplifier event to fix first delay

[Maxime Ripard]

On Tue, Jan 31, 2017 at 11:05:48AM +0100, Mylène Josserand wrote:
> When playing a sound for the first time, a short delay, where the audio
> file is not played, can be noticed.
> On a second play (right after), the sound is played correctly.
> If we wait a short time (~5 sec which corresponds to the aplay
> timeout), the delay is back.
> 
> This patch fixes it by using an event on headphone amplifier.
> It allows to keep the amplifier enable while playing a sound.
> A delay of 700ms allows to wait that the amplifier is powered-up
> before playing the sound.
> 
> Signed-off-by: Mylène Josserand <mylene.josserand at free-electrons.com>

Acked-by: Maxime Ripard <maxime.ripard at free-electrons.com>

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 801 bytes
Desc: not available
URL: <http://mailman.alsa-project.org/pipermail/alsa-devel/attachments/20170131/ae424bee/attachment.sig>