drm/i915: Split intel_ddi_encoder_reset() from intel_dp_encoder_reset()

Most of intel_dp_encoder_reset() is for pre-ddi platforms.
Make a clean split.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210318161015.22070-5-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -4017,8 +4017,17 @@ static void intel_ddi_encoder_destroy(struct drm_encoder *encoder)
 	kfree(dig_port);
 }
 
+static void intel_ddi_encoder_reset(struct drm_encoder *encoder)
+{
+	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
+
+	intel_dp->reset_link_params = true;
+
+	intel_pps_encoder_reset(intel_dp);
+}
+
 static const struct drm_encoder_funcs intel_ddi_funcs = {
-	.reset = intel_dp_encoder_reset,
+	.reset = intel_ddi_encoder_reset,
 	.destroy = intel_ddi_encoder_destroy,
 };
 

drivers/gpu/drm/i915/display/intel_dp.c

@@ -5736,13 +5736,12 @@ static enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
 	return INVALID_PIPE;
 }
 
-void intel_dp_encoder_reset(struct drm_encoder *encoder)
+static void intel_dp_encoder_reset(struct drm_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
 	struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
 
-	if (!HAS_DDI(dev_priv))
-		intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+	intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
 
 	intel_dp->reset_link_params = true;
 

drivers/gpu/drm/i915/display/intel_dp.h

@@ -56,7 +56,6 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
 void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
 					   const struct intel_crtc_state *crtc_state,
 					   bool enable);
-void intel_dp_encoder_reset(struct drm_encoder *encoder);
 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
 void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder);
 void intel_dp_encoder_flush_work(struct drm_encoder *encoder);