On 15.08.2014 00:21, ville.syrj...@linux.intel.com wrote:
From: Ville Syrjälä <ville.syrj...@linux.intel.com>

To more closely match the IEGD ns2501 driver behaviour, call the
mode_set hook while the DVO port is still disabled, then enable the DVO
port, and finally call the dpms hook.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>

Tested-by: Thomas Richter <rich...@rus.uni-stuttgart.de>

---
  drivers/gpu/drm/i915/intel_dvo.c | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index d5ea393..4f115c1 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -185,12 +185,13 @@ static void intel_enable_dvo(struct intel_encoder 
*encoder)
        u32 dvo_reg = intel_dvo->dev.dvo_reg;
        u32 temp = I915_READ(dvo_reg);

-       I915_WRITE(dvo_reg, temp | DVO_ENABLE);
-       I915_READ(dvo_reg);
        intel_dvo->dev.dev_ops->mode_set(&intel_dvo->dev,
                                         &crtc->config.requested_mode,
                                         &crtc->config.adjusted_mode);

+       I915_WRITE(dvo_reg, temp | DVO_ENABLE);
+       I915_READ(dvo_reg);
+
        intel_dvo->dev.dev_ops->dpms(&intel_dvo->dev, true);
  }



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