| /* |
| * <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; -- 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 /* __LINUX_USB_MIDI_H */ |
