This patch set enables BACO (Bus Active Chip Off) for power savings on VI+ asics. Similar to PowerXpress and Hybrid Graphics (PX/HG) laptops, we can disable GPUs at runtime when they are not in use is they support BACO. The runtime pm code in amdgpu was originally developed for PX/HG laptops, so it was pretty entangled with the vga_switcheroo and ACPI code. Since the GPU contains an audio codec for HDMI/DP, there is some interaction with the hda driver. I am by no means an expert on alsa, so any advice on those patches is much appreciated. I had to enable runtime pm on the hda device to allow the GPU to enter runtime pm because they are linked. These patches depend on the clean patches and CI/VI BACO patches I sent out earlier today. The full tree can be found here: https://cgit.freedesktop.org/~agd5f/linux/log/?h=baco TODO: - Turn off runtime pm when KFD is active - Make sure audio still works - Make sure PX/HG still works Alex Deucher (19): drm/amdgpu: add asic callback for BACO support drm/amdgpu: add supports_baco callback for soc15 asics. drm/amdgpu: add supports_baco callback for SI asics. drm/amdgpu: add supports_baco callback for CIK asics. drm/amdgpu: add supports_baco callback for VI asics. drm/amdgpu: add supports_baco callback for NV asics. drm/amdgpu: add a amdgpu_device_supports_baco helper drm/amdgpu: rename amdgpu_device_is_px to amdgpu_device_supports_boco drm/amdgpu: add additional boco checks to runtime suspend/resume drm/amdgpu: split swSMU baco_reset into enter and exit drm/amdgpu: add helpers for baco entry and exit drm/amdgpu: add baco support to runtime suspend/resume drm/amdgpu: start to disentangle boco from runtime pm drm/amdgpu: disentangle runtime pm and vga_switcheroo drm/amdgpu: enable runtime pm on BACO capable boards if runpm=1 drm/amdgpu/runpm: enable runpm on baco capable VI+ asics ALSA: hda/hdmi - fix vgaswitcheroo detection for AMD ALSA: hda/hdmi - enable runtime pm for newer AMD display audio ALSA: hda/hdmi - enable automatic runtime pm for AMD HDMI codecs by default drivers/gpu/drm/amd/amdgpu/amdgpu.h | 12 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 106 ++++++++++++++++-- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 64 ++++++----- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 20 +++- drivers/gpu/drm/amd/amdgpu/cik.c | 18 +++ drivers/gpu/drm/amd/amdgpu/nv.c | 18 ++- drivers/gpu/drm/amd/amdgpu/si.c | 6 + drivers/gpu/drm/amd/amdgpu/soc15.c | 37 +++++- drivers/gpu/drm/amd/amdgpu/vi.c | 22 ++++ .../gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 9 +- drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 12 +- sound/pci/hda/hda_intel.c | 74 +++++++++++- sound/pci/hda/patch_hdmi.c | 1 + 13 files changed, 343 insertions(+), 56 deletions(-) -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
