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

Keith Packard keithp at keithp.com
Thu Sep 29 18:09:35 PDT 2011


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

Signed-off-by: Keith Packard <keithp at keithp.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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