FM / usb

/usr/include/linux/usb

Name	Size	Mode	Actions
audio.h	19490	0644	edit dl rm
cdc-wdm.h	739	0644	edit dl rm
cdc.h	13478	0644	edit dl rm
ch9.h	39522	0644	edit dl rm
ch11.h	9149	0644	edit dl rm
charger.h	598	0644	edit dl rm
functionfs.h	10370	0644	edit dl rm
gadgetfs.h	2818	0644	edit dl rm
g_printer.h	1385	0644	edit dl rm
g_uvc.h	1073	0644	edit dl rm
midi.h	3434	0644	edit dl rm
tmc.h	4854	0644	edit dl rm
video.h	17295	0644	edit dl rm

Edit: /usr/include/linux/usb/midi.h (3434B)

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * <linux/usb/midi.h> -- USB MIDI definitions.
 *
 * Copyright (C) 2006 Thumtronics Pty Ltd.
 * Developed for Thumtronics by Grey Innovation
 * Ben Williamson <ben.williamson@greyinnovation.com>
 *
 * This software is distributed under the terms of the GNU General Public
 * License ("GPL") version 2, as published by the Free Software Foundation.
 *
 * This file holds USB constants and structures defined
 * by the USB Device Class Definition for MIDI Devices.
 * Comments below reference relevant sections of that document:
 *
 * http://www.usb.org/developers/devclass_docs/midi10.pdf
 */

#ifndef __LINUX_USB_MIDI_H
#define __LINUX_USB_MIDI_H

#include <linux/types.h>

/* A.1  MS Class-Specific Interface Descriptor Subtypes */
#define USB_MS_HEADER		0x01
#define USB_MS_MIDI_IN_JACK	0x02
#define USB_MS_MIDI_OUT_JACK	0x03
#define USB_MS_ELEMENT		0x04

/* A.2  MS Class-Specific Endpoint Descriptor Subtypes */
#define USB_MS_GENERAL		0x01

/* A.3  MS MIDI IN and OUT Jack Types */
#define USB_MS_EMBEDDED		0x01
#define USB_MS_EXTERNAL		0x02

/* 6.1.2.1  Class-Specific MS Interface Header Descriptor */
struct usb_ms_header_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;
	__u8  bDescriptorSubtype;
	__le16 bcdMSC;
	__le16 wTotalLength;
} __attribute__ ((packed));

#define USB_DT_MS_HEADER_SIZE	7

/* 6.1.2.2  MIDI IN Jack Descriptor */
struct usb_midi_in_jack_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;		/* USB_DT_CS_INTERFACE */
	__u8  bDescriptorSubtype;	/* USB_MS_MIDI_IN_JACK */
	__u8  bJackType;		/* USB_MS_EMBEDDED/EXTERNAL */
	__u8  bJackID;
	__u8  iJack;
} __attribute__ ((packed));

#define USB_DT_MIDI_IN_SIZE	6

struct usb_midi_source_pin {
	__u8  baSourceID;
	__u8  baSourcePin;
} __attribute__ ((packed));

/* 6.1.2.3  MIDI OUT Jack Descriptor */
struct usb_midi_out_jack_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;		/* USB_DT_CS_INTERFACE */
	__u8  bDescriptorSubtype;	/* USB_MS_MIDI_OUT_JACK */
	__u8  bJackType;		/* USB_MS_EMBEDDED/EXTERNAL */
	__u8  bJackID;
	__u8  bNrInputPins;		/* p */
	struct usb_midi_source_pin pins[]; /* [p] */
	/*__u8  iJack;  -- omitted due to variable-sized pins[] */
} __attribute__ ((packed));

#define USB_DT_MIDI_OUT_SIZE(p)	(7 + 2 * (p))

/* As above, but more useful for defining your own descriptors: */
#define DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(p)			\
struct usb_midi_out_jack_descriptor_##p {			\
	__u8  bLength;						\
	__u8  bDescriptorType;					\
	__u8  bDescriptorSubtype;				\
	__u8  bJackType;					\
	__u8  bJackID;						\
	__u8  bNrInputPins;					\
	struct usb_midi_source_pin pins[p];			\
	__u8  iJack;						\
} __attribute__ ((packed))

/* 6.2.2  Class-Specific MS Bulk Data Endpoint Descriptor */
struct usb_ms_endpoint_descriptor {
	__u8  bLength;			/* 4+n */
	__u8  bDescriptorType;		/* USB_DT_CS_ENDPOINT */
	__u8  bDescriptorSubtype;	/* USB_MS_GENERAL */
	__u8  bNumEmbMIDIJack;		/* n */
	__u8  baAssocJackID[];		/* [n] */
} __attribute__ ((packed));

#define USB_DT_MS_ENDPOINT_SIZE(n)	(4 + (n))

/* As above, but more useful for defining your own descriptors: */
#define DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(n)			\
struct usb_ms_endpoint_descriptor_##n {				\
	__u8  bLength;						\
	__u8  bDescriptorType;					\
	__u8  bDescriptorSubtype;				\
	__u8  bNumEmbMIDIJack;					\
	__u8  baAssocJackID[n];					\
} __attribute__ ((packed))

#endif /* __LINUX_USB_MIDI_H */

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