@@ -691,6 +691,30 @@ void tb_switch_debugfs_remove(struct tb_switch *sw)
debugfs_remove_recursive(sw->debugfs_dir);
}
+/**
+ * tb_service_debugfs_init() - Add debugfs directory for service
+ * @svc: Thunderbolt service pointer
+ *
+ * Adds debugfs directory for service.
+ */
+void tb_service_debugfs_init(struct tb_service *svc)
+{
+ svc->debugfs_dir = debugfs_create_dir(dev_name(&svc->dev),
+ tb_debugfs_root);
+}
+
+/**
+ * tb_service_debugfs_remove() - Remove service debugfs directory
+ * @svc: Thunderbolt service pointer
+ *
+ * Removes the previously created debugfs directory for @svc.
+ */
+void tb_service_debugfs_remove(struct tb_service *svc)
+{
+ debugfs_remove(svc->debugfs_dir);
+ svc->debugfs_dir = NULL;
+}
+
void tb_debugfs_init(void)
{
tb_debugfs_root = debugfs_create_dir("thunderbolt", NULL);
@@ -1029,11 +1029,15 @@ void tb_debugfs_init(void);
void tb_debugfs_exit(void);
void tb_switch_debugfs_init(struct tb_switch *sw);
void tb_switch_debugfs_remove(struct tb_switch *sw);
+void tb_service_debugfs_init(struct tb_service *svc);
+void tb_service_debugfs_remove(struct tb_service *svc);
#else
static inline void tb_debugfs_init(void) { }
static inline void tb_debugfs_exit(void) { }
static inline void tb_switch_debugfs_init(struct tb_switch *sw) { }
static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { }
+static inline void tb_service_debugfs_init(struct tb_service *svc) { }
+static inline void tb_service_debugfs_remove(struct tb_service *svc) { }
#endif
#ifdef CONFIG_USB4_KUNIT_TEST
@@ -777,6 +777,7 @@ static void tb_service_release(struct device *dev)
struct tb_service *svc = container_of(dev, struct tb_service, dev);
struct tb_xdomain *xd = tb_service_parent(svc);
+ tb_service_debugfs_remove(svc);
ida_simple_remove(&xd->service_ids, svc->id);
kfree(svc->key);
kfree(svc);
@@ -891,6 +892,8 @@ static void enumerate_services(struct tb_xdomain *xd)
svc->dev.parent = &xd->dev;
dev_set_name(&svc->dev, "%s.%d", dev_name(&xd->dev), svc->id);
+ tb_service_debugfs_init(svc);
+
if (device_register(&svc->dev)) {
put_device(&svc->dev);
break;
@@ -350,6 +350,9 @@ void tb_unregister_protocol_handler(struct tb_protocol_handler *handler);
* @prtcvers: Protocol version from the properties directory
* @prtcrevs: Protocol software revision from the properties directory
* @prtcstns: Protocol settings mask from the properties directory
+ * @debugfs_dir: Pointer to the service debugfs directory. Always created
+ * when debugfs is enabled. Can be used by service drivers to
+ * add their own entries under the service.
*
* Each domain exposes set of services it supports as collection of
* properties. For each service there will be one corresponding
@@ -363,6 +366,7 @@ struct tb_service {
u32 prtcvers;
u32 prtcrevs;
u32 prtcstns;
+ struct dentry *debugfs_dir;
};
static inline struct tb_service *tb_service_get(struct tb_service *svc)
This allows service drivers to use it as parent directory if they need to add their own debugfs entries. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/debugfs.c | 24 ++++++++++++++++++++++++ drivers/thunderbolt/tb.h | 4 ++++ drivers/thunderbolt/xdomain.c | 3 +++ include/linux/thunderbolt.h | 4 ++++ 4 files changed, 35 insertions(+)