greybus: bundle: Create bundles using bundle descriptors

Currently we are creating bundles based on interface descriptors. An interface
can have one or more bundles associated with it and so a bundle must be created
based on a bundle descriptor.

Also get class_type from bundle descriptor.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/bundle.c

@@ -80,7 +80,8 @@ void gb_bundle_bind_protocols(void)
  * bundle.  Returns a pointer to the new bundle or a null
  * pointer if a failure occurs due to memory exhaustion.
  */
-struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 interface_id)
+struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
+				   u8 class_type)
 {
 	struct gb_bundle *bundle;
 	int retval;
@@ -90,7 +91,8 @@ struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 interface_id)
 		return NULL;
 
 	bundle->intf = intf;
-	bundle->id = interface_id;
+	bundle->id = bundle_id;
+	bundle->class_type = class_type;
 	INIT_LIST_HEAD(&bundle->connections);
 
 	/* Invalid device id to start with */
@@ -103,12 +105,12 @@ struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 interface_id)
 	bundle->dev.type = &greybus_bundle_type;
 	bundle->dev.groups = bundle_groups;
 	device_initialize(&bundle->dev);
-	dev_set_name(&bundle->dev, "%s:%d", dev_name(&intf->dev), interface_id);
+	dev_set_name(&bundle->dev, "%s:%d", dev_name(&intf->dev), bundle_id);
 
 	retval = device_add(&bundle->dev);
 	if (retval) {
 		pr_err("failed to add bundle device for id 0x%02hhx\n",
-			interface_id);
+			bundle_id);
 		put_device(&bundle->dev);
 		kfree(bundle);
 		return NULL;

drivers/staging/greybus/bundle.h

@@ -17,6 +17,7 @@ struct gb_bundle {
 	struct device		dev;
 	struct gb_interface	*intf;
 	u8			id;
+	u8			class_type;
 	u8			device_id;
 	struct list_head	connections;
 
@@ -27,7 +28,8 @@ struct gb_bundle {
 #define GB_DEVICE_ID_BAD	0xff
 
 /* Greybus "private" definitions" */
-struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 module_id);
+struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id,
+				   u8 class_type);
 void gb_bundle_destroy(struct gb_interface *intf);
 int gb_bundle_init(struct gb_interface *intf, u8 module_id, u8 device_id);
 

drivers/staging/greybus/manifest.c

@@ -108,6 +108,9 @@ static int identify_descriptor(struct gb_interface *intf,
 		break;
 	case GREYBUS_TYPE_INTERFACE:
 		break;
+	case GREYBUS_TYPE_BUNDLE:
+		expected_size += sizeof(struct greybus_descriptor_bundle);
+		break;
 	case GREYBUS_TYPE_CPORT:
 		expected_size += sizeof(struct greybus_descriptor_cport);
 		break;
@@ -237,7 +240,7 @@ static u32 gb_manifest_parse_cports(struct gb_interface *intf,
 /*
  * Find bundle descriptors in the manifest and set up their data
  * structures.  Returns the number of bundles set up for the
- * given module.
+ * given interface.
  */
 static u32 gb_manifest_parse_bundles(struct gb_interface *intf)
 {
@@ -245,13 +248,13 @@ static u32 gb_manifest_parse_bundles(struct gb_interface *intf)
 
 	while (true) {
 		struct manifest_desc *descriptor;
-		struct greybus_descriptor_interface *desc_interface;
+		struct greybus_descriptor_bundle *desc_bundle;
 		struct gb_bundle *bundle;
 		bool found = false;
 
 		/* Find an bundle descriptor */
 		list_for_each_entry(descriptor, &intf->manifest_descs, links) {
-			if (descriptor->type == GREYBUS_TYPE_INTERFACE) {
+			if (descriptor->type == GREYBUS_TYPE_BUNDLE) {
 				found = true;
 				break;
 			}
@@ -260,8 +263,9 @@ static u32 gb_manifest_parse_bundles(struct gb_interface *intf)
 			break;
 
 		/* Found one.  Set up its bundle structure*/
-		desc_interface = descriptor->data;
-		bundle = gb_bundle_create(intf, desc_interface->id);
+		desc_bundle = descriptor->data;
+		bundle = gb_bundle_create(intf, desc_bundle->id,
+					  desc_bundle->class_type);
 		if (!bundle)
 			return 0;	/* Error */