/* * <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	6struct 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;  -- ommitted 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