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drm/dp: Add definitions for eDP Rev 1.4a and 1.4b

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VESA eDP 1.4 specification has separate fields defined in
EDP_DPCD_REV for eDP 1.4a and 1.4b eDP revisions.
This patch defines those. Found this when one of my eDP panels
advertises eDP 1.4a (04h) in the EDP_DPCD_REV DPCD field.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181009002351.23085-1-manasi.d.navare@intel.com
This commit is contained in:
Manasi Navare 2018-10-08 17:23:51 -07:00
parent 4035cc5738
commit 4c953d0397
1 changed files with 2 additions and 0 deletions
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2
include/drm/drm_dp_helper.h
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@ -685,6 +685,8 @@
# define DP_EDP_12 0x01
# define DP_EDP_13 0x02
# define DP_EDP_14 0x03
# define DP_EDP_14a 0x04 /* eDP 1.4a */
# define DP_EDP_14b 0x05 /* eDP 1.4b */
#define DP_EDP_GENERAL_CAP_1 0x701
# define DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP (1 << 0)