å?¨ 2018/7/13 23:07, Takashi Iwai å??é??: > On Wed, 11 Jul 2018 13:12:01 +0200, > Takashi Iwai wrote: >> And the forced runtime PM is still an issue, and this would need the >> other notification mechanism than the HD-audio unsolicited event as >> AMD HDMI controller doesn't honor the HD-audio WAKEEN bit. > Since we had a nice "hack week" in this week at SUSE, I spent some > time to write some patches for the support of the direct hotplug > notification / ELD query between HD-audio and radeon/amdgpu. It > re-utilizes the audio component framework for i915 but in a slightly > more flexible way. > > The patches are found in topic/hda-acomp branch of my sound.git tree: > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git > > The following commits are relevant: > drm/i915: Split audio component to a generic type > ALSA: hda/i915: Allow delayed i915 audio component binding > ALSA: hda/i915: Associate audio component with devres > ALSA: hda: Make audio component support more generic > ALSA: hda/hdmi: Allow audio component for AMD/ATI HDMI > ALSA: hda/hdmi: Use single mutex unlock in error paths > drm/radeon: Add audio component support > drm/amdgpu: Add audio component support > > The branch should be cleanly pullable onto the latest 4.18-rc. > > I couldn't test amdgpu but the test with a radeon driver on an old > laptop seemed working through a very quick test. > > Please give it a try. That is really wonderful work. I will check it on our AMD platform. BTW, For display, AMD has moved to use DC to support new asics. so there also need a patch for amdgpu in DC code. Thanks JimQu > > thanks, > > Takashi
