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Release 4.12 include/uapi/linux/usb/midi.h

/*
 * <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 */

Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Williamson22093.62%125.00%
Greg Kroah-Hartman135.53%125.00%
Lucas De Marchi10.43%125.00%
Robert P. J. Day10.43%125.00%
Total235100.00%4100.00%
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