ACK: [SRU] [Bionic/Unstable] [PATCH 0/1] Allow Raven Ridge's audio controller to be runtime suspended

[Hui Wang]

Acked-by: Hui Wang<hui.wang at canonical.com>



On 2018年07月19日 17:21, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1782540
>
> [Impact]
> AMD Raven Ridge's audio controller doesn't get runtime suspended. It
> consumes unnecessary power.
>
> [Test]
> With the patch, it can get runtime suspended and save ~1W for the
> system.
> It can also get runtime resumed correctly when doing audio input/output.
>
> [Fix]
> Add AZX_DCAPS_PM_RUNTIME flag to let sound subsystem know it supports
> runtime PM.
>
> [Regression Potential]
> Low. This change limits to Raven Ridge's audio controller
>
> Kai-Heng Feng (1):
>    ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge
>
>   sound/pci/hda/hda_intel.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>