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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/gadget/function/u_tcm.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/gadget/function/u_tcm.h')
-rw-r--r--drivers/usb/gadget/function/u_tcm.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_tcm.h b/drivers/usb/gadget/function/u_tcm.h
new file mode 100644
index 000000000..2cd15d9a1
--- /dev/null
+++ b/drivers/usb/gadget/function/u_tcm.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * u_tcm.h
+ *
+ * Utility definitions for the tcm function
+ *
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
+ */
+
+#ifndef U_TCM_H
+#define U_TCM_H
+
+#include <linux/usb/composite.h>
+
+/**
+ * @dependent: optional dependent module. Meant for legacy gadget.
+ * If non-null its refcount will be increased when a tpg is created and
+ * decreased when tpg is dropped.
+ * @dep_lock: lock for dependent module operations.
+ * @ready: true if the dependent module information is set.
+ * @can_attach: true a function can be bound to gadget
+ * @has_dep: true if there is a dependent module
+ *
+ */
+struct f_tcm_opts {
+ struct usb_function_instance func_inst;
+ struct module *dependent;
+ struct mutex dep_lock;
+ bool ready;
+ bool can_attach;
+ bool has_dep;
+
+ /*
+ * Callbacks to be removed when legacy tcm gadget disappears.
+ *
+ * If you use the new function registration interface
+ * programmatically, you MUST set these callbacks to
+ * something sensible (e.g. probe/remove the composite).
+ */
+ int (*tcm_register_callback)(struct usb_function_instance *);
+ void (*tcm_unregister_callback)(struct usb_function_instance *);
+};
+
+#endif /* U_TCM_H */