drm/amd/display: Disable secondary link for certain monitors (6d822156) · Commits · 戴 / test

[why] If the specific monitor supports DSC, the secondary link should be disabled, and the other way around, too: if either that monitor or our ASIC doesn't support DSC, the secodary link should be enabled. [how] Add a monitor patch and disable secondary link if that monitor is detected and if ASIC supports DSC, or otherwise enable secondary link. Signed-off-by:

Nikola Cornij <nikola.cornij@amd.com> Reviewed-by:

Joshua Aberback <Joshua.Aberback@amd.com> Acked-by:

Harry Wentland <harry.wentland@amd.com> Acked-by:

Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

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

+7 −3

Original line number	Diff line number	Diff line
		@@ -2066,6 +2066,13 @@ void dc_resource_state_construct(
		dst_ctx->clk_mgr = dc->clk_mgr;
		}


		bool dc_resource_is_dsc_encoding_supported(const struct dc *dc)
		{
		return dc->res_pool->res_cap->num_dsc > 0;
		}


		/**
		* dc_validate_global_state() - Determine if HW can support a given state
		* Checks HW resource availability and bandwidth requirement.
		@@ -2897,6 +2904,3 @@ void get_audio_check(struct audio_info *aud_modes,
		}
		}

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

+2 −0

Original line number	Diff line number	Diff line
		@@ -910,6 +910,8 @@ void dc_resource_state_copy_construct_current(

		void dc_resource_state_destruct(struct dc_state *context);

		bool dc_resource_is_dsc_encoding_supported(const struct dc *dc);

		/*
		* TODO update to make it about validation sets
		* Set up streams and links associated to drive sinks

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

+1 −0

Original line number	Diff line number	Diff line
		@@ -229,6 +229,7 @@ struct dc_panel_patch {
		unsigned int extra_t12_ms;
		unsigned int extra_delay_backlight_off;
		unsigned int extra_t7_ms;
		unsigned int manage_secondary_link;
		};

		struct dc_edid_caps {

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