drm/amd/display: Save/restore link setting for disable phy when link retraining (99218d12) · Commits · 戴 / test

[Why] The link setting will be modify after disable phy and due to DP Compliance Fails. [How] Save and resotre link setting for disable link phy when link retraining. Signed-off-by:

Hugo Hu <hugo.hu@amd.com> Reviewed-by:

Wenjing Liu <Wenjing.Liu@amd.com> Acked-by:

Leo Li <sunpeng.li@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

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

+3 −2

Original line number	Diff line number	Diff line
		@@ -2788,9 +2788,9 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link link, union hpd_irq_data out_hpd
		union hpd_irq_data hpd_irq_dpcd_data = { { { {0} } } };
		union device_service_irq device_service_clear = { { 0 } };
		enum dc_status result;

		bool status = false;
		struct pipe_ctx *pipe_ctx;
		struct dc_link_settings previous_link_settings;
		int i;

		if (out_link_loss)
		@@ -2873,9 +2873,10 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link link, union hpd_irq_data out_hpd
		if (pipe_ctx == NULL \|\| pipe_ctx->stream == NULL)
		return false;

		previous_link_settings = link->cur_link_settings;
		dp_disable_link_phy(link, pipe_ctx->stream->signal);

		perform_link_training_with_retries(&link->cur_link_settings,
		perform_link_training_with_retries(&previous_link_settings,
		true, LINK_TRAINING_ATTEMPTS,
		pipe_ctx,
		pipe_ctx->stream->signal);

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