[alsa-devel] [PATCH 0/4] drm_audio_component support for AMD/ATI HDMI codecs

[Takashi Iwai]

Hi,

this is a patch set to add the support of drm_audio_component for
AMD/ATI HDMI codecs.  With the drm_audio_component, the HDMI/DP audio
hotplug and ELD read-out can be achieved directly without the hardware
access.  The best point by that is that it makes the hotplug
notification working even during runtime suspend.

The support is totally optional and dynamic, hence it still works even
if either HD-audio or DRM side isn't patched, and it'll fall back to
the existing method.

The current patch supports only radeon and a part of amdgpu; the DC
support isn't included yet.


Takashi

===

Takashi Iwai (4):
  ALSA: hda/hdmi: Use single mutex unlock in error paths
  ALSA: hda/hdmi: Allow audio component for AMD/ATI HDMI
  drm/radeon: Add audio component support
  drm/amdgpu: Add audio component support

 drivers/gpu/drm/Kconfig                   |   2 +
 drivers/gpu/drm/amd/amdgpu/Makefile       |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu.h       |   4 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_audio.c |  97 ++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h  |   3 +
 drivers/gpu/drm/amd/amdgpu/dce_v10_0.c    |   6 +
 drivers/gpu/drm/amd/amdgpu/dce_v11_0.c    |   6 +
 drivers/gpu/drm/amd/amdgpu/dce_v6_0.c     |   6 +
 drivers/gpu/drm/amd/amdgpu/dce_v8_0.c     |   6 +
 drivers/gpu/drm/radeon/radeon.h           |   3 +
 drivers/gpu/drm/radeon/radeon_audio.c     |  79 ++++++++
 sound/pci/hda/patch_hdmi.c                | 209 +++++++++++++++++-----
 12 files changed, 374 insertions(+), 49 deletions(-)
 create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_audio.c

-- 
2.18.0