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drm/amd/display: Check for DSC support instead of ASIC revision

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[ Upstream commit 349a19b2f1 ]

[why]
This check for ASIC revision is no longer useful and causes
lightup issues after a topology change in MST DSC scenario.
In this case, DSC configs should be recalculated for the new
topology. This check prevented that from happening on certain
ASICs that do, in fact, support DSC.

[how]
Change the ASIC revision to instead check if DSC is supported.

Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eryk Brol 2021-02-09 17:09:52 -05:00 • committed by Greg Kroah-Hartman
commit 6b2132f50d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -8659,7 +8659,7 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
}
#if defined(CONFIG_DRM_AMD_DC_DCN)
if (adev->asic_type >= CHIP_NAVI10) {
if (dc_resource_is_dsc_encoding_supported(dc)) {
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
if (drm_atomic_crtc_needs_modeset(new_crtc_state)) {
ret = add_affected_mst_dsc_crtcs(state, crtc);