Hi,
On 09/28/2015 09:42 AM, Maxime Ripard wrote:
Hi Priit,
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:
Hi everyone,
This patch set adds the support for what Allwinner calls the codec on their SoCs.
This codec is actually a combination of a codec and DAI, tied together in a single memory-mapped IP. It is completely standalone, and outputs 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 separate one.
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:
- All switches on
- Mute pre-amplifier
- Mute RMR
- 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.
I'm seeing similar stuff on a cubieboard, both A10 and A20 based cubieboards, I have to fiddle a bit with the switches to get things to work. At boot all switches are disabled.
On both A10 and A20 I need to enable to following for things to work:
unmute Pre-Amplifier DAC unmute Pre-Amplifier Mute
I guess this is just a question if adding some mixer defaults to the alsa userspace somewhere ?
Regards,
Hans