[alsa-devel] [PATCH] ALSA: hda: hdmi - Keep old slot assignment behavior for Intel platforms

[Kai Vehmanen]

Hey,

thanks Takashi. A small correction still:

On Tue, 3 Dec 2019, Takashi Iwai wrote:

> The commit 609f5485344b ("ALSA: hda: hdmi - preserve non-MST PCM
> routing for Intel platforms") tried to restore the old behavior wrt
> assignment of the PCM slot for Intel platforms, but this didn't do it
> right.  As found in the later discussion, even on non-MST, a positive
> pipe id is passed, which is equivalent with dev_id on Intel.

Small correction still:

""As found in the later discussion, a positive pipe id can be
passed for single monitor attachment case.""

> This patch reverts the previous attempt and applies a simpler
> workaround instead.  Actually, for Intel platforms, we can handle as
> if per_pin->dev_id=0, assign the primary slot at the first try.  This
> assures the compatible behavior with the previous versions regarding
> the slot assignment.

This applies. So if you have a DP-MST case with a single monitor
and dev_id>0, this patch assure compatible behaviour with past versions.

Br, Kai