gadget/legacy/gmidi.c

1 // SPDX-License-Identifier: GPL-2.0
3  * gmidi.c -- USB MIDI Gadget Driver
11  * Gadget Zero driver, Copyright (C) 2003-2004 David Brownell.
12  * USB Audio driver, Copyright (C) 2002 by Takashi Iwai.
13  * USB MIDI driver, Copyright (C) 2002-2005 Clemens Ladisch.
15  * Refer to the USB Device Class Definition for MIDI Devices:
16  * http://www.usb.org/developers/devclass_docs/midi10.pdf
26 #include <linux/usb/composite.h>
27 #include <linux/usb/gadget.h>
31 /*-------------------------------------------------------------------------*/
42 MODULE_PARM_DESC(index, "Index value for the USB MIDI Gadget adapter.");
46 MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter.");
54 MODULE_PARM_DESC(qlen, "USB read and write request queue length");
66  * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
67  * Instead:  allocate your own, using normal USB-IF procedures.
70 #define DRIVER_PRODUCT_NUM	0x0004		/* Linux-USB "MIDI Gadget" */
97 	.language	= 0x0409,	/* en-us */
151 	midi_opts->index = index;  in midi_bind()
152 	midi_opts->id = id;  in midi_bind()
153 	midi_opts->in_ports = in_ports;  in midi_bind()
154 	midi_opts->out_ports = out_ports;  in midi_bind()
155 	midi_opts->buflen = buflen;  in midi_bind()
156 	midi_opts->qlen = qlen;  in midi_bind()