From ae59e633b52cccf5761ac3012378fec2480c49aa Mon Sep 17 00:00:00 2001
From: vathsala nagaraju <vathsala.nagaraju@intel.com>
Date: Tue, 26 Sep 2017 15:29:12 +0530
Subject: [PATCH] drm/dp: Add defines for latency in sink
Git-commit: ae59e633b52cccf5761ac3012378fec2480c49aa
Patch-mainline: v4.15-rc1
References: FATE#322643 bsc#1055900

Add defines for dpcd register 2009 (synchronization latency
in sink).

V2: - add spec version (Daniel) - use register name as is in spec,only drop excess   from end (jani) - add the full register contents (jani)
[Rodrigo fixed spec version when merging]

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1506419953-32605-1-git-send-email-vathsala.nagaraju@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 include/drm/drm_dp_helper.h |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -735,6 +735,12 @@
 # define DP_PSR_SINK_INTERNAL_ERROR         7
 # define DP_PSR_SINK_STATE_MASK             0x07
 
+#define DP_SYNCHRONIZATION_LATENCY_IN_SINK		0x2009 /* edp 1.4 */
+# define DP_MAX_RESYNC_FRAME_COUNT_MASK			(0xf << 0)
+# define DP_MAX_RESYNC_FRAME_COUNT_SHIFT		0
+# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_MASK	(0xf << 4)
+# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_SHIFT	4
+
 #define DP_RECEIVER_ALPM_STATUS		    0x200b  /* eDP 1.4 */
 # define DP_ALPM_LOCK_TIMEOUT_ERROR	    (1 << 0)