On Tue, Sep 22, 2015 at 04:26:57PM +0300, Priit Laes wrote:
On Sat, 2015-09-12 at 15:26 +0200, Maxime Ripard wrote:
This patch set adds the support for what Allwinner calls the codec on
This codec is actually a combination of a codec and DAI, tied
in a single memory-mapped IP. It is completely standalone, and
directly the analog signal.
While it supports both playback and capture, the capture is not
implemented in this patch, and will be posted eventually as a
This set, in order to be functional, has a dependency on the audio
clocks patch set posted separately. However, it doesn't needs this to
compile properly, so I guess it can be merged without really caring
for the merging status of the clock patches.
It works on Gemei G9 tablet which has also extra chip that
automatically switches output over from internal speakers to headphones
when connector is inserted.
Now I noticed some weird things:
When I have all the switches as ON in alsamixer, and I start disabling
them, I get following weird results.
Left Mixer Left - LML
Right Mixer Left - LMR
Right Mixer Right - RMR
Very faint output:
LML - ON
RML - Mute
RMR - ON
Output works fully:
LML - Mute
RML - Mute
RMR - Mute
When I Mute Pre-Amplifier and fiddle any of LML, RML or RMR, the output
stays mute even after setting Pre-Amplifier Mute back on:
1. All switches on
2. Mute pre-amplifier
3. Mute RMR
4. Pre-Amilifier Mute Off
.. Music stays off
5. Toggle Pre-Amplifier twice - output turns on
Unfortunately, I don't have access to that SoC or that setup.