From 2c9d97545914cc764786702f361a1f1c9bb8dfa9 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Wed, 8 Sep 2010 12:42:05 -0700 Subject: [PATCH] drm/i915: make sure panel is sequenced off when starting a mode set Otherwise we may not be able to train the DP link. Signed-off-by: Jesse Barnes Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/intel_dp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index bcd81f96fc7f..27805a9ca877 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -894,6 +894,7 @@ static void intel_dp_prepare(struct drm_encoder *encoder) uint32_t dp_reg = I915_READ(intel_dp->output_reg); if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) { + ironlake_edp_panel_off(dev); ironlake_edp_backlight_off(dev); ironlake_edp_panel_vdd_on(dev); ironlake_edp_pll_on(encoder); -- 2.11.0