From 8bfac12f88dbafff40af72c7990b7d14e0158545 Mon Sep 17 00:00:00 2001 From: Mikita Lipski Date: Wed, 7 Mar 2018 10:49:23 -0500 Subject: drm/amd/display: Allow truncation to 10 bits The truncation isn't being programmed if the truncation depth is set to 2, it causes an issue with dce11.2 asic using 6bit eDP panel. It required to truncate 12:10 in order to perform spatial dither 10:6. This change will allow 12:10 truncation to be enabled. Signed-off-by: Mikita Lipski Reviewed-by: Jun Lei Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dce/dce_opp.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c index 3931412ab6d3..f19de13024f8 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_opp.c @@ -128,8 +128,7 @@ static void set_truncation( return; } /* on other format-to do */ - if (params->flags.TRUNCATE_ENABLED == 0 || - params->flags.TRUNCATE_DEPTH == 2) + if (params->flags.TRUNCATE_ENABLED == 0) return; /*Set truncation depth and Enable truncation*/ REG_UPDATE_3(FMT_BIT_DEPTH_CONTROL, @@ -144,7 +143,7 @@ static void set_truncation( /** * set_spatial_dither * 1) set spatial dithering mode: pattern of seed - * 2) set spatical dithering depth: 0 for 18bpp or 1 for 24bpp + * 2) set spatial dithering depth: 0 for 18bpp or 1 for 24bpp * 3) set random seed * 4) set random mode * lfsr is reset every frame or not reset -- cgit