diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_midi.h')
| -rw-r--r-- | drivers/usb/gadget/function/u_midi.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_midi.h b/drivers/usb/gadget/function/u_midi.h new file mode 100644 index 000000000..2e400b495 --- /dev/null +++ b/drivers/usb/gadget/function/u_midi.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * u_midi.h + * + * Utility definitions for the midi function + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> + */ + +#ifndef U_MIDI_H +#define U_MIDI_H + +#include <linux/usb/composite.h> + +struct f_midi_opts { + struct usb_function_instance func_inst; + int index; + char *id; + bool id_allocated; + unsigned int in_ports; + unsigned int out_ports; + unsigned int buflen; + unsigned int qlen; + + /* + * Protect the data form concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_MIDI_H */ + |