5.10-stable review patch. If anyone has any objections, please let me know.
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From: Alex Hung alex.hung@amd.com
commit 8f4bdbc8e99db6ec9cb0520748e49a2f2d7d1727 upstream.
This reverts commit 58c3b3341cea4f75dc8c003b89f8a6dd8ec55e50.
[WHY & HOW] The writeback series cause a regression in thunderbolt display.
Signed-off-by: Alex Hung alex.hung@amd.com Reviewed-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c | 3 --- 1 file changed, 3 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c @@ -243,9 +243,6 @@ static bool dwb3_program_ogam_lut( return false; }
- if (params->hw_points_num == 0) - return false; - REG_SET(DWB_OGAM_CONTROL, 0, DWB_OGAM_MODE, 2);
current_mode = dwb3_get_ogam_current(dwbc30);