From 862a876c3a6372f2fa9d0c6510f1976ac94fc857 Mon Sep 17 00:00:00 2001 From: Chris Park Date: Tue, 15 Mar 2022 12:21:43 -0400 Subject: drm/amd/display: Correct Slice reset calculation [Why] Once DSC slice cannot fit pixel clock, we incorrectly reset min slices to 0 and allow max slice to operate, even when max slice itself cannot fit the pixel clock properly. [How] Change the sequence such that we correctly determine DSC is not possible when both min slices and max slices cannot fit pixel clock per slice. Reviewed-by: Wenjing Liu Acked-by: Alex Hung Signed-off-by: Chris Park Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c index efc2339f1fa0..4385d19bc489 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -864,11 +864,11 @@ static bool setup_dsc_config( min_slices_h = inc_num_slices(dsc_common_caps.slice_caps, min_slices_h); } + is_dsc_possible = (min_slices_h <= max_slices_h); + if (pic_width % min_slices_h != 0) min_slices_h = 0; // DSC TODO: Maybe try increasing the number of slices first? - is_dsc_possible = (min_slices_h <= max_slices_h); - if (min_slices_h == 0 && max_slices_h == 0) is_dsc_possible = false; -- cgit v1.2.3