[SRU][Focal][OEM-5.6][Groovy][PATCH 0/1] alsa/sof: support 1 and 3 dmics

[Stefan Bader]

On 14.08.20 07:39, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1891585
> 
> [Impact]
> On a Dell tigerlake laptop, the sof driver fails to detect the dmic,
> it alwasys report 0 dmics on the machine. So users doesn't have
> internal mic to use.

This does not warrant a "high" importance for SRU. I lowered it to "medium".
Also I saw on the bug report that there are tasks for linux-firmware. Is there
any hard dependency or ordering restriction between the kernel and the
linux-firmware change?

-Stefan

> 
> [Fix]
> Intel write a patch to fix this issue, if NHLT table returns 1 or
> 3 dmics, the sof driver will not fail like before, it can support
> 1 or 3 dmics after applying this patch.
> 
> [Test Case]
> Boot the kernel with this patch, and put sof-hda-generic-1ch.tplg in
> the linux-firmware, the sof driver could detect the dmic and users
> have a workable internal mic after booting up.
> 
> [Regression Risk]
> This patch adds new support for 1 and 3 dmics, it doesn't change
> anything on existing functions, so the regression posibility is very
> low.
> 
> 
> Jaska Uimonen (1):
>   UBUNTU: SAUCE: ASoC: SOF: intel: hda: support also devices with 1 and
>     3 dmics
> 
>  sound/soc/sof/intel/hda.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 


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