drm/i915: split intel_hdmi_init into encoder and connector pieces

We want to split the HDMI connector and encoder initialization because
in the future the DDI code will have its own "encoder init" function,
but it will still call intel_hdmi_init_connector. The DDI encoder will
actually have two connectors attached to it: HDMI and DP.

The best way to look at this patch is to imagine that we're renaming
intel_hdmi_init to intel_hdmi_init_connector and removing the
encoder-specific pieces and placing them into intel_hdmi_init.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_hdmi.c

@@ -959,45 +959,24 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
 	intel_attach_broadcast_rgb_property(connector);
 }
 
-void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
+static void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
+				      struct intel_connector *intel_connector)
 {
+	struct drm_connector *connector = &intel_connector->base;
+	struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
+	struct intel_encoder *intel_encoder = &intel_dig_port->base;
+	struct drm_device *dev = intel_encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_connector *connector;
-	struct intel_encoder *intel_encoder;
-	struct intel_connector *intel_connector;
-	struct intel_digital_port *intel_dig_port;
-	struct intel_hdmi *intel_hdmi;
-
-	intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL);
-	if (!intel_dig_port)
-		return;
-
-	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
-	if (!intel_connector) {
-		kfree(intel_dig_port);
-		return;
-	}
-
-	intel_hdmi = &intel_dig_port->hdmi;
-	intel_encoder = &intel_dig_port->base;
-	drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
-			 DRM_MODE_ENCODER_TMDS);
+	enum port port = intel_hdmi->ddi_port;
 
-	connector = &intel_connector->base;
 	drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
 			   DRM_MODE_CONNECTOR_HDMIA);
 	drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
 
-	intel_encoder->type = INTEL_OUTPUT_HDMI;
-
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 	connector->interlace_allowed = 1;
 	connector->doublescan_allowed = 0;
-	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
-
-	intel_encoder->cloneable = false;
 
-	intel_hdmi->ddi_port = port;
 	switch (port) {
 	case PORT_B:
 		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
@@ -1017,8 +996,6 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
 		BUG();
 	}
 
-	intel_hdmi->sdvox_reg = sdvox_reg;
-
 	if (!HAS_PCH_SPLIT(dev)) {
 		intel_hdmi->write_infoframe = g4x_write_infoframe;
 		intel_hdmi->set_infoframes = g4x_set_infoframes;
@@ -1036,6 +1013,45 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
 		intel_hdmi->set_infoframes = cpt_set_infoframes;
 	}
 
+	intel_connector->get_hw_state = intel_connector_get_hw_state;
+
+	intel_hdmi_add_properties(intel_hdmi, connector);
+
+	intel_connector_attach_encoder(intel_connector, intel_encoder);
+	drm_sysfs_connector_add(connector);
+
+	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
+	 * 0xd.  Failure to do so will result in spurious interrupts being
+	 * generated on the port when a cable is not attached.
+	 */
+	if (IS_G4X(dev) && !IS_GM45(dev)) {
+		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
+		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
+	}
+}
+
+void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
+{
+	struct intel_digital_port *intel_dig_port;
+	struct intel_encoder *intel_encoder;
+	struct drm_encoder *encoder;
+	struct intel_connector *intel_connector;
+
+	intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL);
+	if (!intel_dig_port)
+		return;
+
+	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
+	if (!intel_connector) {
+		kfree(intel_dig_port);
+		return;
+	}
+
+	intel_encoder = &intel_dig_port->base;
+	encoder = &intel_encoder->base;
+
+	drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
+			 DRM_MODE_ENCODER_TMDS);
 	if (IS_HASWELL(dev)) {
 		intel_encoder->pre_enable = intel_ddi_pre_enable;
 		intel_encoder->enable = intel_enable_ddi;
@@ -1051,20 +1067,14 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
 		drm_encoder_helper_add(&intel_encoder->base,
 				       &intel_hdmi_helper_funcs);
 	}
-	intel_connector->get_hw_state = intel_connector_get_hw_state;
 
+	intel_encoder->type = INTEL_OUTPUT_HDMI;
+	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
+	intel_encoder->cloneable = false;
 
-	intel_hdmi_add_properties(intel_hdmi, connector);
+	intel_dig_port->hdmi.ddi_port = port;
+	intel_dig_port->hdmi.sdvox_reg = sdvox_reg;
+	intel_dig_port->dp.output_reg = 0;
 
-	intel_connector_attach_encoder(intel_connector, intel_encoder);
-	drm_sysfs_connector_add(connector);
-
-	/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
-	 * 0xd.  Failure to do so will result in spurious interrupts being
-	 * generated on the port when a cable is not attached.
-	 */
-	if (IS_G4X(dev) && !IS_GM45(dev)) {
-		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
-		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
-	}
+	intel_hdmi_init_connector(intel_dig_port, intel_connector);
 }