Commit 663bfef0 authored by Aidan Yang's avatar Aidan Yang Committed by Alex Deucher
Browse files

drm/amd/display: Disable integerscaling for downscale and MPO 



[Why]
Integer scaling is applied to MPO planes when downscaling,
MPO planes use variable taps and integer scaling sets taps=1

[How]
Disable integer scaling on MPO planes,
Disable integer scaling for downscaling planes

Signed-off-by: default avatarAidan Yang <Aidan.Yang@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent c09d1d34

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

+17 −1
Original line number Diff line number Diff line
@@ -940,11 +940,27 @@ static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx) 


}



static bool is_downscaled(const struct rect *src_rect, const struct rect *dst_rect)

{

        if (src_rect->width > dst_rect->width || src_rect->height > dst_rect->height)

		return true;

	return false;

}



static bool is_mpo(int layer_index)

{

	if (layer_index > 0)

		return true;

	return false;

}



static void calculate_integer_scaling(struct pipe_ctx *pipe_ctx)

{

	unsigned int integer_multiple = 1;



	if (pipe_ctx->plane_state->scaling_quality.integer_scaling) {

	if (pipe_ctx->plane_state->scaling_quality.integer_scaling &&

	    !is_downscaled(&pipe_ctx->plane_state->src_rect, &pipe_ctx->plane_state->dst_rect) &&

	    !is_mpo(pipe_ctx->plane_state->layer_index)) {

		// calculate maximum # of replication of src onto addressable

		integer_multiple = min(

				pipe_ctx->stream->timing.h_addressable / pipe_ctx->stream->src.width,