drm/gma500: Make cdv crt use ddc adapter from drm_connector

We're moving all uses of ddc_bus to drm_connector where they belong.
Also cleanup the error handling in cdv_intel_crt_init().
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220601092311.22648-7-patrik.r.jakobsson@gmail.com

drivers/gpu/drm/gma500/cdv_intel_crt.c

@@ -192,18 +192,16 @@ static enum drm_connector_status cdv_intel_crt_detect(
 static void cdv_intel_crt_destroy(struct drm_connector *connector)
 {
 	struct gma_connector *gma_connector = to_gma_connector(connector);
-	struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
+	struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc);
 
-	gma_i2c_destroy(gma_encoder->ddc_bus);
+	gma_i2c_destroy(ddc_bus);
 	drm_connector_cleanup(connector);
 	kfree(gma_connector);
 }
 
 static int cdv_intel_crt_get_modes(struct drm_connector *connector)
 {
-	struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
-	return psb_intel_ddc_get_modes(connector,
-				       &gma_encoder->ddc_bus->base);
+	return psb_intel_ddc_get_modes(connector, connector->ddc);
 }
 
 static int cdv_intel_crt_set_property(struct drm_connector *connector,
@@ -245,8 +243,10 @@ void cdv_intel_crt_init(struct drm_device *dev,
 
 	struct gma_connector *gma_connector;
 	struct gma_encoder *gma_encoder;
+	struct gma_i2c_chan *ddc_bus;
 	struct drm_connector *connector;
 	struct drm_encoder *encoder;
+	int ret;
 
 	gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
 	if (!gma_encoder)
@@ -254,25 +254,31 @@ void cdv_intel_crt_init(struct drm_device *dev,
 
 	gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
 	if (!gma_connector)
-		goto failed_connector;
+		goto err_free_encoder;
+
+	/* Set up the DDC bus. */
+	ddc_bus = gma_i2c_create(dev, GPIOA, "CRTDDC_A");
+	if (!ddc_bus) {
+		dev_printk(KERN_ERR, dev->dev, "DDC bus registration failed.\n");
+		goto err_free_connector;
+	}
 
 	connector = &gma_connector->base;
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
-	drm_connector_init(dev, connector,
-		&cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
+	ret = drm_connector_init_with_ddc(dev, connector,
+					  &cdv_intel_crt_connector_funcs,
+					  DRM_MODE_CONNECTOR_VGA,
+					  &ddc_bus->base);
+	if (ret)
+		goto err_ddc_destroy;
 
 	encoder = &gma_encoder->base;
-	drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
+	if (ret)
+		goto err_connector_cleanup;
 
 	gma_connector_attach_encoder(gma_connector, gma_encoder);
 
-	/* Set up the DDC bus. */
-	gma_encoder->ddc_bus = gma_i2c_create(dev, GPIOA, "CRTDDC_A");
-	if (!gma_encoder->ddc_bus) {
-		dev_printk(KERN_ERR, dev->dev, "DDC bus registration failed.\n");
-		goto failed_ddc;
-	}
-
 	gma_encoder->type = INTEL_OUTPUT_ANALOG;
 	connector->interlace_allowed = 0;
 	connector->doublescan_allowed = 0;
@@ -282,11 +288,14 @@ void cdv_intel_crt_init(struct drm_device *dev,
 					&cdv_intel_crt_connector_helper_funcs);
 
 	return;
-failed_ddc:
-	drm_encoder_cleanup(&gma_encoder->base);
+
+err_connector_cleanup:
 	drm_connector_cleanup(&gma_connector->base);
+err_ddc_destroy:
+	gma_i2c_destroy(ddc_bus);
+err_free_connector:
 	kfree(gma_connector);
-failed_connector:
+err_free_encoder:
 	kfree(gma_encoder);
 	return;
 }