drm/i915: Use intel_dp->DP in eDP PLL setup
Use intel_dp->DP in the eDP PLL setup, instead of doing RMWs. To do this we need to move DP_AUDIO_OUTPUT_ENABLE setup to happen later, so that we don't enable audio accidentally while configuring the PLL. Note that actually we already enabled audio before the port due to the double port register write magic required by VLV/CHV from 7b713f50 ("drm/i915: Fix eDP link training when switching pipes on VLV/CHV") So that gets changed now to keep audio off as long as the port is off. Also intel_dp_link_down() must be made to update intel_dp->DP so that we don't re-enable the port by accident when turning off the PLL. This is safe now that we don't call intel_dp_link_down() during link retraining. v2: Add a note about the audio vs. port enable (Daniel) Signed-off-by:Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1447164977-32315-1-git-send-email-ville.syrjala@linux.intel.com Reviewed-by:
Jani Nikula <jani.nikula@intel.com>
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64e1077a
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