From f58ff8549ec0dba61aa7f2510559bce814507316 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Wed, 28 Sep 2011 16:44:14 -0700 Subject: [PATCH] drm/i915: Ensure eDP powered up during DP_SET_POWER operation in dp_prepare Any call to intel_dp_sink_dpms must ensure that the panel has power so that the DP_SET_POWER operation will be correctly received. The only one missing this was in intel_dp_prepare. Signed-off-by: Keith Packard Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2b4acfda21cc..a178414d5d67 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1039,7 +1039,9 @@ static void intel_dp_prepare(struct drm_encoder *encoder) struct drm_device *dev = encoder->dev; /* Wake up the sink first */ + ironlake_edp_panel_vdd_on(intel_dp); intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); + ironlake_edp_panel_vdd_off(intel_dp); if (is_edp(intel_dp)) { ironlake_edp_backlight_off(dev); -- 2.11.0