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113 lines
3.4 KiB
113 lines
3.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* <linux/usb/midi.h> -- USB MIDI definitions. |
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* |
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* Copyright (C) 2006 Thumtronics Pty Ltd. |
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* Developed for Thumtronics by Grey Innovation |
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* Ben Williamson <[email protected]> |
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* |
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* This software is distributed under the terms of the GNU General Public |
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* License ("GPL") version 2, as published by the Free Software Foundation. |
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* |
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* This file holds USB constants and structures defined |
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* by the USB Device Class Definition for MIDI Devices. |
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* Comments below reference relevant sections of that document: |
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* |
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* http://www.usb.org/developers/devclass_docs/midi10.pdf |
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*/ |
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#ifndef __LINUX_USB_MIDI_H |
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#define __LINUX_USB_MIDI_H |
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#include <linux/types.h> |
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/* A.1 MS Class-Specific Interface Descriptor Subtypes */ |
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#define USB_MS_HEADER 0x01 |
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#define USB_MS_MIDI_IN_JACK 0x02 |
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#define USB_MS_MIDI_OUT_JACK 0x03 |
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#define USB_MS_ELEMENT 0x04 |
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/* A.2 MS Class-Specific Endpoint Descriptor Subtypes */ |
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#define USB_MS_GENERAL 0x01 |
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/* A.3 MS MIDI IN and OUT Jack Types */ |
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#define USB_MS_EMBEDDED 0x01 |
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#define USB_MS_EXTERNAL 0x02 |
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/* 6.1.2.1 Class-Specific MS Interface Header Descriptor */ |
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struct usb_ms_header_descriptor { |
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__u8 bLength; |
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__u8 bDescriptorType; |
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__u8 bDescriptorSubtype; |
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__le16 bcdMSC; |
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__le16 wTotalLength; |
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} __attribute__ ((packed)); |
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#define USB_DT_MS_HEADER_SIZE 7 |
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/* 6.1.2.2 MIDI IN Jack Descriptor */ |
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struct usb_midi_in_jack_descriptor { |
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__u8 bLength; |
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__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ |
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__u8 bDescriptorSubtype; /* USB_MS_MIDI_IN_JACK */ |
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__u8 bJackType; /* USB_MS_EMBEDDED/EXTERNAL */ |
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__u8 bJackID; |
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__u8 iJack; |
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} __attribute__ ((packed)); |
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#define USB_DT_MIDI_IN_SIZE 6 |
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struct usb_midi_source_pin { |
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__u8 baSourceID; |
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__u8 baSourcePin; |
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} __attribute__ ((packed)); |
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/* 6.1.2.3 MIDI OUT Jack Descriptor */ |
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struct usb_midi_out_jack_descriptor { |
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__u8 bLength; |
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__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ |
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__u8 bDescriptorSubtype; /* USB_MS_MIDI_OUT_JACK */ |
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__u8 bJackType; /* USB_MS_EMBEDDED/EXTERNAL */ |
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__u8 bJackID; |
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__u8 bNrInputPins; /* p */ |
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struct usb_midi_source_pin pins[]; /* [p] */ |
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/*__u8 iJack; -- omitted due to variable-sized pins[] */ |
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} __attribute__ ((packed)); |
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#define USB_DT_MIDI_OUT_SIZE(p) (7 + 2 * (p)) |
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/* As above, but more useful for defining your own descriptors: */ |
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#define DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(p) \ |
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struct usb_midi_out_jack_descriptor_##p { \ |
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__u8 bLength; \ |
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__u8 bDescriptorType; \ |
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__u8 bDescriptorSubtype; \ |
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__u8 bJackType; \ |
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__u8 bJackID; \ |
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__u8 bNrInputPins; \ |
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struct usb_midi_source_pin pins[p]; \ |
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__u8 iJack; \ |
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} __attribute__ ((packed)) |
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/* 6.2.2 Class-Specific MS Bulk Data Endpoint Descriptor */ |
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struct usb_ms_endpoint_descriptor { |
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__u8 bLength; /* 4+n */ |
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__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */ |
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__u8 bDescriptorSubtype; /* USB_MS_GENERAL */ |
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__u8 bNumEmbMIDIJack; /* n */ |
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__u8 baAssocJackID[]; /* [n] */ |
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} __attribute__ ((packed)); |
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#define USB_DT_MS_ENDPOINT_SIZE(n) (4 + (n)) |
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/* As above, but more useful for defining your own descriptors: */ |
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#define DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(n) \ |
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struct usb_ms_endpoint_descriptor_##n { \ |
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__u8 bLength; \ |
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__u8 bDescriptorType; \ |
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__u8 bDescriptorSubtype; \ |
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__u8 bNumEmbMIDIJack; \ |
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__u8 baAssocJackID[n]; \ |
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} __attribute__ ((packed)) |
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#endif /* __LINUX_USB_MIDI_H */
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