This patch set cleans up and attempts to make runtime pm more reliable in radeon and amdgpu on PX systems. If you have a PX system that requires setting the runpm=0 module parameter for stability, please try this patch set.
The main fix is that a minimum of 200ms of delay is required between a dGPU power down and a power up.
This patch also properly handles the detection of the ATPX dGPU power control method properly and handles dGPU power control for platforms that do not support the ATPX dGPU power control method.
Alex Deucher (12): drm/amdgpu: disable power control on hybrid laptops drm/amdgpu: clean up atpx power control handling drm/amdgpu: add a delay after ATPX dGPU power off drm/amdgpu/atpx: add a query for ATPX dGPU power control drm/amdgpu: use PCI_D3hot for PX systems without dGPU power control drm/amdgpu/atpx: drop forcing of dGPU power control drm/radeon: disable power control on hybrid laptops drm/radeon: clean up atpx power control handling drm/radeon: add a delay after ATPX dGPU power off drm/radeon/atpx: add a query for ATPX dGPU power control drm/radeon: use PCI_D3hot for PX systems without dGPU power control drm/radeon/atpx: drop forcing of dGPU power control
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c | 50 ++++++++++++++++-------- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 ++- drivers/gpu/drm/radeon/radeon_atpx_handler.c | 49 +++++++++++++++-------- drivers/gpu/drm/radeon/radeon_drv.c | 7 +++- 5 files changed, 77 insertions(+), 36 deletions(-)