diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_printer.h')
| -rw-r--r-- | drivers/usb/gadget/function/u_printer.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_printer.h b/drivers/usb/gadget/function/u_printer.h new file mode 100644 index 000000000000..0e2c49d4274e --- /dev/null +++ b/drivers/usb/gadget/function/u_printer.h @@ -0,0 +1,37 @@ +/* + * u_printer.h + * + * Utility definitions for the printer function + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_PRINTER_H +#define U_PRINTER_H + +#include <linux/usb/composite.h> + +#define PNP_STRING_LEN 1024 + +struct f_printer_opts { + struct usb_function_instance func_inst; + int minor; + char pnp_string[PNP_STRING_LEN]; + unsigned q_len; + + /* + * Protect the data from concurrent access by read/write + * and create symlink/remove symlink + */ + struct mutex lock; + int refcnt; +}; + +#endif /* U_PRINTER_H */ |