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drm/dp: add helper for extracting adjust 128b/132b TX FFE preset
authorJani Nikula <jani.nikula@intel.com>
Thu, 9 Sep 2021 12:51:56 +0000 (15:51 +0300)
committerJani Nikula <jani.nikula@intel.com>
Mon, 20 Sep 2021 15:45:35 +0000 (18:45 +0300)
commitc78b4a85721f3905ba9baeac4e0bb99a36211d9b
treec4a7290e152f7a946362f52307597535a09843e3
parent762520e310258aa69add29261cef106fddf8f915
drm/dp: add helper for extracting adjust 128b/132b TX FFE preset

The DP 2.0 128b/132b channel coding uses TX FFE presets instead of
vswing and pre-emphasis.

Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/4ba129c51aeb01a5f210de7026abe704a554a178.1631191763.git.jani.nikula@intel.com
drivers/gpu/drm/drm_dp_helper.c
include/drm/drm_dp_helper.h