Commit 3f460907 authored by Xingyue Tao's avatar Xingyue Tao Committed by Alex Deucher
Browse files

drm/amd/display: Add dc cap to restrict VSR downscaling src size 



- Adds int max_downscale_src_width in dc struct
- Checks and does not support if downscale size is more than 4k (width > 3840)

Signed-off-by: default avatarXingyue Tao <xingyue.tao@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7ea034ce

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

+1 −0
Original line number Diff line number Diff line
@@ -203,6 +203,7 @@ struct dc_debug { 
	bool clock_trace;

	bool validation_trace;

	bool bandwidth_calcs_trace;

	int max_downscale_src_width;



	/* stutter efficiency related */

	bool disable_stutter;

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c

+11 −5
Original line number Diff line number Diff line
@@ -145,13 +145,19 @@ bool dpp_get_optimal_number_of_taps( 
	else

		pixel_width = scl_data->viewport.width;



	/* Some ASICs does not support  FP16 scaling, so we reject modes require this*/

	if (scl_data->viewport.width  != scl_data->h_active &&

		scl_data->viewport.height != scl_data->v_active &&

		dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&

		scl_data->viewport.height != scl_data->v_active) {



		/* Some ASICs does not support  FP16 scaling, so we reject modes require this*/

		if (dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&

			scl_data->format == PIXEL_FORMAT_FP16)

			return false;



		if (dpp->ctx->dc->debug.max_downscale_src_width != 0 &&

			scl_data->viewport.width > dpp->ctx->dc->debug.max_downscale_src_width)

			return false;

	}



	/* TODO: add lb check */



	/* No support for programming ratio of 4, drop to 3.99999.. */

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

+1 −0
Original line number Diff line number Diff line
@@ -447,6 +447,7 @@ static const struct dc_debug debug_defaults_drv = { 
		.performance_trace = false,

		.az_endpoint_mute_only = true,

		.recovery_enabled = false, /*enable this by default after testing.*/

		.max_downscale_src_width = 3840,

};



static const struct dc_debug debug_defaults_diags = {

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