drm/amdgpu/cgs: add refresh rate checking to non-DC display code
authorAlex Deucher <[email protected]>
Tue, 13 Feb 2018 19:33:51 +0000 (14:33 -0500)
committerAlex Deucher <[email protected]>
Mon, 19 Feb 2018 19:20:22 +0000 (14:20 -0500)
commit7a572b1eda235052b9e0a41954938fa29f4b0f20
tree85a77b24281d4582cb373500323d68d04f96cb08
parenta9b3c001650984993dc96e09e1c59f57b905fd2d
drm/amdgpu/cgs: add refresh rate checking to non-DC display code

Clamp the vblank period to 0 if the refresh rate is larger than
120 hz for non-DC.  This allows us to remove the refresh rate
checks from powerplay for mclk switching.

Reviewed-by: Eric Huang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c