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Commit 8fc0a0d4 authored by Charlene Liu's avatar Charlene Liu Committed by Alex Deucher
Browse files

drm/amd/display: add DalEnableHDMI20 key support 



[why]
"DalEnableHDMI20" set to 0, disallow HDMI YCbCr420 and  pixel clock > 340Mhz
Default is enabled.

Signed-off-by: default avatarCharlene Liu <charlene.liu@amd.com>
Reviewed-by: default avatarJun Lei <Jun.Lei@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e0d85b20

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

+1 −0
Original line number Diff line number Diff line
@@ -251,6 +251,7 @@ struct dc_debug { 
	bool recovery_enabled;

	bool avoid_vbios_exec_table;

	bool scl_reset_length10;

	bool hdmi20_disable;



};

struct dc_state;

drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c

+6 −0
Original line number Diff line number Diff line
@@ -646,6 +646,9 @@ static bool dce110_link_encoder_validate_hdmi_output( 
	if (!enc110->base.features.flags.bits.HDMI_6GB_EN &&

		adjusted_pix_clk_khz >= 300000)

		return false;

	if (enc110->base.ctx->dc->debug.hdmi20_disable &&

		crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)

		return false;

	return true;

}
@@ -773,6 +776,9 @@ void dce110_link_encoder_construct( 
				__func__,

				result);

	}

	if (enc110->base.ctx->dc->debug.hdmi20_disable) {

		enc110->base.features.flags.bits.HDMI_6GB_EN = 0;

	}

}



bool dce110_link_encoder_validate_output_with_stream(

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c

+6 −0
Original line number Diff line number Diff line
@@ -596,6 +596,9 @@ static bool dcn10_link_encoder_validate_hdmi_output( 
	if (!enc10->base.features.flags.bits.HDMI_6GB_EN &&

		adjusted_pix_clk_khz >= 300000)

		return false;

	if (enc10->base.ctx->dc->debug.hdmi20_disable &&

		crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)

		return false;

	return true;

}
@@ -728,6 +731,9 @@ void dcn10_link_encoder_construct( 
				__func__,

				result);

	}

	if (enc10->base.ctx->dc->debug.hdmi20_disable) {

		enc10->base.features.flags.bits.HDMI_6GB_EN = 0;

	}

}



bool dcn10_link_encoder_validate_output_with_stream(