greybus: svc: move endo id and ap interface id to svc

Move endo_id and AP interface id to the svc device.

The endo abstraction is about to be removed, and these attributes are
arguable attributes of the svc anyway.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/connection.c

@@ -268,7 +268,7 @@ gb_connection_svc_connection_create(struct gb_connection *connection)
 
 	intf = connection->bundle->intf;
 	ret = gb_svc_connection_create(hd->svc,
-			hd->endo->ap_intf_id,
+			hd->svc->ap_intf_id,
 			connection->hd_cport_id,
 			intf->interface_id,
 			connection->intf_cport_id,
@@ -289,7 +289,7 @@ gb_connection_svc_connection_destroy(struct gb_connection *connection)
 		return;
 
 	gb_svc_connection_destroy(connection->hd->svc,
-				  connection->hd->endo->ap_intf_id,
+				  connection->hd->svc->ap_intf_id,
 				  connection->hd_cport_id,
 				  connection->bundle->intf->interface_id,
 				  connection->intf_cport_id);

drivers/staging/greybus/endo.c

@@ -75,36 +75,7 @@ static const struct attribute_group svc_group = {
 	.name = "svc",
 };
 
-static ssize_t id_show(struct device *dev,
-			struct device_attribute *attr, char *buf)
-{
-	struct gb_endo *endo = to_gb_endo(dev);
-
-	return sprintf(buf, "0x%04x\n", endo->id);
-}
-static DEVICE_ATTR_RO(id);
-
-static ssize_t ap_intf_id_show(struct device *dev,
-			struct device_attribute *attr, char *buf)
-{
-	struct gb_endo *endo = to_gb_endo(dev);
-
-	return sprintf(buf, "%u\n", endo->ap_intf_id);
-}
-static DEVICE_ATTR_RO(ap_intf_id);
-
-static struct attribute *endo_attrs[] = {
-	&dev_attr_id.attr,
-	&dev_attr_ap_intf_id.attr,
-	NULL,
-};
-
-static const struct attribute_group endo_group = {
-	.attrs = endo_attrs,
-};
-
 static const struct attribute_group *endo_groups[] = {
-	&endo_group,
 	&svc_group,
 	NULL,
 };
@@ -490,8 +461,6 @@ struct gb_endo *gb_endo_create(struct gb_host_device *hd, u16 endo_id,
 		retval = -EINVAL;
 		goto free_endo;
 	}
-	endo->id = endo_id;
-	endo->ap_intf_id = ap_intf_id;
 
 	/* Register Endo device */
 	retval = gb_endo_register(hd, endo);

drivers/staging/greybus/svc.c

@@ -24,6 +24,31 @@ struct svc_hotplug {
 };
 
 
+static ssize_t endo_id_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct gb_svc *svc = to_gb_svc(dev);
+
+	return sprintf(buf, "0x%04x\n", svc->endo_id);
+}
+static DEVICE_ATTR_RO(endo_id);
+
+static ssize_t ap_intf_id_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct gb_svc *svc = to_gb_svc(dev);
+
+	return sprintf(buf, "%u\n", svc->ap_intf_id);
+}
+static DEVICE_ATTR_RO(ap_intf_id);
+
+static struct attribute *svc_attrs[] = {
+	&dev_attr_endo_id.attr,
+	&dev_attr_ap_intf_id.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(svc);
+
 /*
  * AP's SVC cport is required early to get messages from the SVC. This happens
  * even before the Endo is created and hence any modules or interfaces.
@@ -339,8 +364,6 @@ static int gb_svc_hello(struct gb_operation *op)
 	struct gb_host_device *hd = connection->hd;
 	struct gb_svc_hello_request *hello_request;
 	struct gb_interface *intf;
-	u16 endo_id;
-	u8 interface_id;
 	int ret;
 
 	/*
@@ -355,8 +378,8 @@ static int gb_svc_hello(struct gb_operation *op)
 	}
 
 	hello_request = op->request->payload;
-	endo_id = le16_to_cpu(hello_request->endo_id);
+	svc->endo_id = le16_to_cpu(hello_request->endo_id);
-	interface_id = hello_request->interface_id;
+	svc->ap_intf_id = hello_request->interface_id;
 
 	ret = device_add(&svc->dev);
 	if (ret) {
@@ -365,7 +388,7 @@ static int gb_svc_hello(struct gb_operation *op)
 	}
 
 	/* Setup Endo */
-	ret = greybus_endo_setup(hd, endo_id, interface_id);
+	ret = greybus_endo_setup(hd, svc->endo_id, svc->ap_intf_id);
 	if (ret)
 		return ret;
 
@@ -373,7 +396,7 @@ static int gb_svc_hello(struct gb_operation *op)
 	 * Endo and its modules are ready now, fix AP's partially initialized
 	 * svc protocol and its connection.
 	 */
-	intf = gb_ap_interface_create(hd, connection, interface_id);
+	intf = gb_ap_interface_create(hd, connection, svc->ap_intf_id);
 	if (!intf) {
 		gb_endo_remove(hd->endo);
 		return ret;
@@ -385,7 +408,6 @@ static int gb_svc_hello(struct gb_operation *op)
 static void svc_intf_remove(struct gb_connection *connection,
 			    struct gb_interface *intf)
 {
-	struct gb_host_device *hd = connection->hd;
 	struct gb_svc *svc = connection->private;
 	u8 intf_id = intf->interface_id;
 	u8 device_id;
@@ -396,7 +418,7 @@ static void svc_intf_remove(struct gb_connection *connection,
 	/*
 	 * Destroy the two-way route between the AP and the interface.
 	 */
-	gb_svc_route_destroy(svc, hd->endo->ap_intf_id, intf_id);
+	gb_svc_route_destroy(svc, svc->ap_intf_id, intf_id);
 
 	ida_simple_remove(&svc->device_id_map, device_id);
 }
@@ -486,7 +508,7 @@ static void svc_process_hotplug(struct work_struct *work)
 	/*
 	 * Create a two-way route between the AP and the new interface
 	 */
-	ret = gb_svc_route_create(svc, hd->endo->ap_intf_id, GB_DEVICE_ID_AP,
+	ret = gb_svc_route_create(svc, svc->ap_intf_id, GB_DEVICE_ID_AP,
 				  intf_id, device_id);
 	if (ret) {
 		pr_err("%d: Route create operation failed, interface %hhu device_id %hhu (%d)\n",
@@ -504,7 +526,7 @@ static void svc_process_hotplug(struct work_struct *work)
 	goto free_svc_hotplug;
 
 destroy_route:
-	gb_svc_route_destroy(svc, hd->endo->ap_intf_id, intf_id);
+	gb_svc_route_destroy(svc, svc->ap_intf_id, intf_id);
 svc_id_free:
 	/*
 	 * XXX Should we tell SVC that this id doesn't belong to interface
@@ -688,6 +710,7 @@ static int gb_svc_connection_init(struct gb_connection *connection)
 	svc->dev.parent = &hd->dev;
 	svc->dev.bus = &greybus_bus_type;
 	svc->dev.type = &greybus_svc_type;
+	svc->dev.groups = svc_groups;
 	svc->dev.dma_mask = svc->dev.parent->dma_mask;
 	device_initialize(&svc->dev);
 

drivers/staging/greybus/svc.h

@@ -22,6 +22,9 @@ struct gb_svc {
 	struct gb_connection	*connection;
 	enum gb_svc_state	state;
 	struct ida		device_id_map;
+
+	u16 endo_id;
+	u8 ap_intf_id;
 };
 #define to_gb_svc(d) container_of(d, struct gb_svc, d)