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author | Markus Grabner <grabner@icg.tugraz.at> | 2009-02-28 03:43:04 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-04-03 21:54:24 (GMT) |
commit | 705ececd1c60d0f5d6ef2a719008847883516970 (patch) | |
tree | e2a96ac85e15850919e493181fe47f7fdd471af1 /drivers/staging/line6/midi.h | |
parent | e642f09951f7cbb69983781b07bb9cd881546ac4 (diff) | |
download | linux-fsl-qoriq-705ececd1c60d0f5d6ef2a719008847883516970.tar.xz |
Staging: add line6 usb driver
This is an experimental Linux driver for the guitar amp, cab, and
effects modeller PODxt Pro by Line6 (and similar devices), supporting
the following features:
- Reading/writing individual parameters
- Reading/writing complete channel, effects setup, and amp setup data
- Channel switching
- Virtual MIDI interface
- Tuner access
- Playback/capture/mixer device for any ALSA-compatible PCM audio
application
- Signal routing (record clean/processed guitar signal, re-amping)
Moreover, preliminary support for the Variax Workbench is included.
From: Markus Grabner <grabner@icg.tugraz.at>
Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/line6/midi.h')
-rw-r--r-- | drivers/staging/line6/midi.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/staging/line6/midi.h b/drivers/staging/line6/midi.h new file mode 100644 index 0000000..be05a54 --- /dev/null +++ b/drivers/staging/line6/midi.h @@ -0,0 +1,87 @@ +/* + * Line6 Linux USB driver - 0.8.0 + * + * Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, version 2. + * + */ + +#ifndef MIDI_H +#define MIDI_H + + +#include <sound/rawmidi.h> + +#include "midibuf.h" + + +#define MIDI_BUFFER_SIZE 1024 + + +struct snd_line6_midi +{ + /** + Pointer back to the Line6 driver data structure. + */ + struct usb_line6 *line6; + + /** + MIDI substream for receiving (or NULL if not active). + */ + struct snd_rawmidi_substream *substream_receive; + + /** + MIDI substream for transmitting (or NULL if not active). + */ + struct snd_rawmidi_substream *substream_transmit; + + /** + Number of currently active MIDI send URBs. + */ + int num_active_send_urbs; + + /** + Spin lock to protect updates of send_urb. + */ + spinlock_t send_urb_lock; + + /** + Spin lock to protect MIDI buffer handling. + */ + spinlock_t midi_transmit_lock; + + /** + Wait queue for MIDI transmission. + */ + wait_queue_head_t send_wait; + + /** + Bit mask for output MIDI channels. + */ + int midi_mask_transmit; + + /** + Bit mask for input MIDI channels. + */ + int midi_mask_receive; + + /** + Buffer for incoming MIDI stream. + */ + struct MidiBuffer midibuf_in; + + /** + Buffer for outgoing MIDI stream. + */ + struct MidiBuffer midibuf_out; +}; + + +extern int line6_init_midi(struct usb_line6 *line6); +extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data, int length); + + +#endif |