Commit ef319dff authored by Samson Tam's avatar Samson Tam Committed by Alex Deucher
Browse files

drm/amd/display: add support for chroma offset 



[Why]
Adding support for chroma subsampling offset (cositing) in scaler
calculations to adjust reference point where we determine post-scaling
chroma value in YUV420 surfaces.

[How]
Add support for cositing options: NONE, LEFT and TOPLEFT Add debug
option force_cositing and set default to TOPLEFT to maintain same
behaviour as without offset support.

Reviewed-by: default avatarJun Lei <jun.lei@amd.com>
Acked-by: default avatarRodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: default avatarSamson Tam <samson.tam@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d7fedf26

drivers/gpu/drm/amd/display/dc/dc.h

+3 −0
Original line number Diff line number Diff line
@@ -1003,6 +1003,7 @@ struct dc_debug_options { 
	unsigned int static_screen_wait_frames;

	bool force_chroma_subsampling_1tap;

	bool disable_422_left_edge_pixel;

	unsigned int force_cositing;

};



struct gpu_info_soc_bounding_box_v1_0;
@@ -1285,6 +1286,7 @@ struct dc_plane_state { 
	struct tg_color visual_confirm_color;



	bool is_statically_allocated;

	enum chroma_cositing cositing;

};



struct dc_plane_info {
@@ -1303,6 +1305,7 @@ struct dc_plane_info { 
	int  global_alpha_value;

	bool input_csc_enabled;

	int layer_index;

	enum chroma_cositing cositing;

};



#include "dc_stream.h"

drivers/gpu/drm/amd/display/dc/dc_hw_types.h

+7 −0
Original line number Diff line number Diff line
@@ -738,6 +738,13 @@ enum scanning_type { 
	SCANNING_TYPE_UNDEFINED

};



enum chroma_cositing {

	CHROMA_COSITING_NONE,

	CHROMA_COSITING_LEFT,

	CHROMA_COSITING_TOPLEFT,

	CHROMA_COSITING_COUNT

};



struct dc_crtc_timing_flags {

	uint32_t INTERLACE :1;

	uint32_t HSYNC_POSITIVE_POLARITY :1; /* when set to 1,