linux-kernel - [PATCH 03/21] drm/i915: Remove extra 300ms delay during eDP mode setting

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Message-Id: <1317344993-24945-4-git-send-email-keithp@keithp.com>
Date:	Thu, 29 Sep 2011 18:09:35 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Dave Airlie <airlied@...hat.com>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org, Keith Packard <keithp@...thp.com>
Subject: [PATCH 03/21] drm/i915: Remove extra 300ms delay during eDP mode setting

There's no reason to enforce a 300ms delay during eDP mode setting.

Signed-off-by: Keith Packard <keithp@...thp.com>
---
 drivers/gpu/drm/i915/intel_dp.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 44fef5e..f0cfb6b 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -903,13 +903,6 @@ static void ironlake_edp_backlight_on (struct drm_device *dev)
 	u32 pp;
 
 	DRM_DEBUG_KMS("\n");
-	/*
-	 * If we enable the backlight right away following a panel power
-	 * on, we may see slight flicker as the panel syncs with the eDP
-	 * link.  So delay a bit to make sure the image is solid before
-	 * allowing it to appear.
-	 */
-	msleep(300);
 	pp = I915_READ(PCH_PP_CONTROL);
 	pp |= EDP_BLC_ENABLE;
 	I915_WRITE(PCH_PP_CONTROL, pp);
-- 
1.7.6.3

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