drm/i915: Kill intel_prepare_ddi()

Move the ddi buffer translation programming to occur from the encoder
.pre_enable() hook, for just the ddi port we are enabling. Previously
we used to reprogram the translations for all ddi ports during
init and during power well enabling.

v2: s/intel_prepare_ddi_buffers/intel_prepare_ddi_buffer/ (Daniel)
    Resolve conflicts due to  dev_priv->atomic_cdclk_freq

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 5cb168dc2f0c..6f4762dc5a94 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -184,6 +184,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder)
         intel_mst->port = found->port;
 
         if (intel_dp->active_mst_links == 0) {
+                intel_prepare_ddi_buffer(&intel_dig_port->base);
+
                 intel_ddi_clk_select(&intel_dig_port->base, intel_crtc->config);
 
                 intel_dp_set_link_params(intel_dp, intel_crtc->config);