From b348150406564595cf6c1be388e9797fa97c2a5d Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 24 Oct 2023 04:09:02 +0300 Subject: [PATCH] drm/dp: Add DP_HBLANK_EXPANSION_CAPABLE and DSC_PASSTHROUGH_EN DPCD flags Add the DPCD flag to enable DSC passthrough in a last branch device, used in a follow-up i915 patch. Also add a flag to detect HBLANK expansion support in a branch device, used by a workaround in a follow-up i915 patch. Cc: Lyude Paul Cc: dri-devel@lists.freedesktop.org Reviewed-by: Stanislav Lisovskiy Acked-by: Maxime Ripard Reviewed-by: Lyude Paul Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20231030155843.2251023-8-imre.deak@intel.com --- include/drm/display/drm_dp.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index e69cece404b3c..763d45a612f35 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -148,6 +148,7 @@ #define DP_RECEIVE_PORT_0_CAP_0 0x008 # define DP_LOCAL_EDID_PRESENT (1 << 1) # define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2) +# define DP_HBLANK_EXPANSION_CAPABLE (1 << 3) #define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009 @@ -699,6 +700,7 @@ #define DP_DSC_ENABLE 0x160 /* DP 1.4 */ # define DP_DECOMPRESSION_EN (1 << 0) +# define DP_DSC_PASSTHROUGH_EN (1 << 1) #define DP_DSC_CONFIGURATION 0x161 /* DP 2.0 */ #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */ -- 2.30.2