Comment 525 for bug 1958019

The cs35l41 modules aren't built in. Only snd_pcm is. Not that it makes
any real difference.

Originally I thought I was only getting left channel audio out of the
right speaker, but it seems I'm getting left channel audio speakers out
of both speakers. It's possible this is a pinctrl issue that's separate
from the cs35l41 amp support. If that's the case, it's likely fixable by
making pinctl changes.

We'd still have no audio resuming from sleep, but it would be an
improvement.

Can you confirm what your audio situation is, Weikai Kong? Are you
getting left channel audio from both speakers like I am?

On 11/27/21 11:54, <email address hidden> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208555
>
> --- Comment #511 from Weikai Kong (<email address hidden>) ---
> (In reply to Cameron Berkenpas from comment #510)
>> Created attachment 299749 [details]
>> attachment-3712-0.html
>>
>> Without the patches, I'm missing:
>> /sys/devices/pci0000:00/0000:00:15.2/i2c_designware.2/i2c-3/i2c-CLSA0101:00
>>
>> With the patches, I'm missing:
>> /sys/kernel/btf/snd_hda_codec_cs35l41_i2c
>> /sys/kernel/btf/snd_soc_cs35l41_i2c
>> /sys/kernel/btf/snd_soc_cs35l41_spi
>> /sys/module/snd_pcm/holders/snd_soc_cs35l41_i2c
>> /sys/module/snd_pcm/holders/snd_soc_cs35l41_spi
>>
>> snd_pcm is compiled directly in though, and the btf stuff appears
>> related to debugging options I don't have enabled. Seems that for where
>> it matters, our related kernel options are identical.
>>
>> I don't have any NULL pointer dereferences.
> You have all modules built-in, it seems.
>
>> Also, it seems there's been a new BIOS release since early September. I
>> doubt it, but I wonder if would make any difference. I'm hesitant to try
>> it in case if makes a permanent upgrade related to the amp chips that
>> would completely break my sound. Here's the BIOS info I have (from lshw):
>> version: H1CN33WW
>>          date: 07/18/2021
>>
> I'm on the latest 39 BIOS and nothing has really changed. Speaker still
> partially works.
>