drm/i915: Split intel_enable_ddi() into DP and HDMI variants

Untangle intel_enable_ddi() by splitting it into DP and HDMI specific
variants.

v2: Keep using intel_ddi_get_encoder_port() for now

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010121207.570-10-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 49cf8d9d2bc1c56d3b9693fb29609441d33c74c7..18bf06c7e43f89780bb625bfc4297cb317c48e18 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2369,45 +2369,57 @@ void intel_ddi_fdi_post_disable(struct intel_encoder *encoder,
        I915_WRITE(FDI_RX_CTL(PIPE_A), val);
 }
 
-static void intel_enable_ddi(struct intel_encoder *intel_encoder,
-                            const struct intel_crtc_state *pipe_config,
-                            const struct drm_connector_state *conn_state)
+static void intel_enable_ddi_dp(struct intel_encoder *encoder,
+                               const struct intel_crtc_state *crtc_state,
+                               const struct drm_connector_state *conn_state)
 {
-       struct drm_encoder *encoder = &intel_encoder->base;
-       struct drm_i915_private *dev_priv = to_i915(encoder->dev);
-       enum port port = intel_ddi_get_encoder_port(intel_encoder);
-       int type = intel_encoder->type;
+       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+       struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+       enum port port = intel_ddi_get_encoder_port(encoder);
 
-       if (type == INTEL_OUTPUT_HDMI) {
-               struct intel_digital_port *intel_dig_port =
-                       enc_to_dig_port(encoder);
-               bool clock_ratio = pipe_config->hdmi_high_tmds_clock_ratio;
-               bool scrambling = pipe_config->hdmi_scrambling;
-
-               intel_hdmi_handle_sink_scrambling(intel_encoder,
-                                                 conn_state->connector,
-                                                 clock_ratio, scrambling);
-
-               /* In HDMI/DVI mode, the port width, and swing/emphasis values
-                * are ignored so nothing special needs to be done besides
-                * enabling the port.
-                */
-               I915_WRITE(DDI_BUF_CTL(port),
-                          intel_dig_port->saved_port_bits |
-                          DDI_BUF_CTL_ENABLE);
-       } else if (type == INTEL_OUTPUT_EDP) {
-               struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+       if (port == PORT_A && INTEL_GEN(dev_priv) < 9)
+               intel_dp_stop_link_train(intel_dp);
 
-               if (port == PORT_A && INTEL_GEN(dev_priv) < 9)
-                       intel_dp_stop_link_train(intel_dp);
+       intel_edp_backlight_on(crtc_state, conn_state);
+       intel_psr_enable(intel_dp, crtc_state);
+       intel_edp_drrs_enable(intel_dp, crtc_state);
 
-               intel_edp_backlight_on(pipe_config, conn_state);
-               intel_psr_enable(intel_dp, pipe_config);
-               intel_edp_drrs_enable(intel_dp, pipe_config);
-       }
+       if (crtc_state->has_audio)
+               intel_audio_codec_enable(encoder, crtc_state, conn_state);
+}
 
-       if (pipe_config->has_audio)
-               intel_audio_codec_enable(intel_encoder, pipe_config, conn_state);
+static void intel_enable_ddi_hdmi(struct intel_encoder *encoder,
+                                 const struct intel_crtc_state *crtc_state,
+                                 const struct drm_connector_state *conn_state)
+{
+       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+       struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
+       enum port port = intel_ddi_get_encoder_port(encoder);
+
+       intel_hdmi_handle_sink_scrambling(encoder,
+                                         conn_state->connector,
+                                         crtc_state->hdmi_high_tmds_clock_ratio,
+                                         crtc_state->hdmi_scrambling);
+
+       /* In HDMI/DVI mode, the port width, and swing/emphasis values
+        * are ignored so nothing special needs to be done besides
+        * enabling the port.
+        */
+       I915_WRITE(DDI_BUF_CTL(port),
+                  dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE);
+
+       if (crtc_state->has_audio)
+               intel_audio_codec_enable(encoder, crtc_state, conn_state);
+}
+
+static void intel_enable_ddi(struct intel_encoder *encoder,
+                            const struct intel_crtc_state *crtc_state,
+                            const struct drm_connector_state *conn_state)
+{
+       if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+               intel_enable_ddi_hdmi(encoder, crtc_state, conn_state);
+       else
+               intel_enable_ddi_dp(encoder, crtc_state, conn_state);
 }
 
 static void intel_disable_ddi_dp(struct intel_encoder *encoder,