Commit 7624629d authored Oct 21, 2019 by Thierry Reding

drm/dp: Add drm_dp_alternate_scrambler_reset_cap() helper



Add a helper to check if the sink supports the eDP alternate scrambler
reset value of 0xfffe.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-6-thierry.reding@gmail.com

parent 99c830b8

include/drm/drm_dp_helper.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -1294,6 +1294,13 @@ drm_dp_channel_coding_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
		return dpcd[DP_MAIN_LINK_CHANNEL_CODING] & DP_CAP_ANSI_8B10B;
		}

		static inline bool
		drm_dp_alternate_scrambler_reset_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
		{
		return dpcd[DP_EDP_CONFIGURATION_CAP] &
		DP_ALTERNATE_SCRAMBLER_RESET_CAP;
		}

		/*
		* DisplayPort AUX channel
		*/

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