drm/nouveau/drm/nouveau: Don't forget to label dp_aux devices

This makes debugging with DP tracing a lot harder to interpret, so name
each i2c based off the name of the encoder that it's for
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/dispnv04/disp.c

@@ -67,7 +67,7 @@ nv04_display_create(struct drm_device *dev)
 	for (i = 0; i < dcb->entries; i++) {
 		struct dcb_output *dcbent = &dcb->entry[i];
 
-		connector = nouveau_connector_create(dev, dcbent->connector);
+		connector = nouveau_connector_create(dev, dcbent);
 		if (IS_ERR(connector))
 			continue;
 

drivers/gpu/drm/nouveau/dispnv50/disp.c

@@ -2301,7 +2301,7 @@ nv50_display_create(struct drm_device *dev)
 
 	/* create encoder/connector objects based on VBIOS DCB table */
 	for (i = 0, dcbe = &dcb->entry[0]; i < dcb->entries; i++, dcbe++) {
-		connector = nouveau_connector_create(dev, dcbe->connector);
+		connector = nouveau_connector_create(dev, dcbe);
 		if (IS_ERR(connector))
 			continue;
 

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -403,6 +403,7 @@ nouveau_connector_destroy(struct drm_connector *connector)
 	if (nv_connector->aux.transfer) {
 		drm_dp_cec_unregister_connector(&nv_connector->aux);
 		drm_dp_aux_unregister(&nv_connector->aux);
+		kfree(nv_connector->aux.name);
 	}
 	kfree(connector);
 }
@@ -1232,7 +1233,8 @@ drm_conntype_from_dcb(enum dcb_connector_type dcb)
 }
 
 struct drm_connector *
-nouveau_connector_create(struct drm_device *dev, int index)
+nouveau_connector_create(struct drm_device *dev,
+			 const struct dcb_output *dcbe)
 {
 	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
 	struct nouveau_drm *drm = nouveau_drm(dev);
@@ -1240,6 +1242,8 @@ nouveau_connector_create(struct drm_device *dev, int index)
 	struct nouveau_connector *nv_connector = NULL;
 	struct drm_connector *connector;
 	struct drm_connector_list_iter conn_iter;
+	char aux_name[48] = {0};
+	int index = dcbe->connector;
 	int type, ret = 0;
 	bool dummy;
 
@@ -1342,6 +1346,9 @@ nouveau_connector_create(struct drm_device *dev, int index)
 	case DRM_MODE_CONNECTOR_eDP:
 		nv_connector->aux.dev = dev->dev;
 		nv_connector->aux.transfer = nouveau_connector_aux_xfer;
+		snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
+			 dcbe->hasht, dcbe->hashm);
+		nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
 		ret = drm_dp_aux_register(&nv_connector->aux);
 		if (ret) {
 			NV_ERROR(drm, "failed to register aux channel\n");

drivers/gpu/drm/nouveau/nouveau_connector.h

@@ -38,6 +38,7 @@
 #include "nouveau_encoder.h"
 
 struct nvkm_i2c_port;
+struct dcb_output;
 
 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
 struct nouveau_backlight;
@@ -113,7 +114,7 @@ nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
 }
 
 struct drm_connector *
-nouveau_connector_create(struct drm_device *, int index);
+nouveau_connector_create(struct drm_device *, const struct dcb_output *);
 
 extern int nouveau_tv_disable;
 extern int nouveau_ignorelid;