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>
diff --git a/drivers/staging/line6/variax.h b/drivers/staging/line6/variax.h
new file mode 100644
index 0000000..286df24
--- /dev/null
+++ b/drivers/staging/line6/variax.h
@@ -0,0 +1,107 @@
+/*
+ * 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 VARIAX_H
+#define VARIAX_H
+
+
+#include "driver.h"
+
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+#include <linux/wait.h>
+
+#include <sound/core.h>
+
+#include "dumprequest.h"
+
+
+#define VARIAX_ACTIVATE_DELAY 10
+#define VARIAX_STARTUP_DELAY 3
+
+
+enum {
+ VARIAX_DUMP_PASS1 = LINE6_DUMP_CURRENT,
+ VARIAX_DUMP_PASS2,
+ VARIAX_DUMP_PASS3
+};
+
+
+/**
+ Binary Variax model dump
+*/
+struct variax_model {
+ /**
+ Header information (including program name).
+ */
+ unsigned char name[18];
+
+ /**
+ Model parameters.
+ */
+ unsigned char control[78 * 2];
+};
+
+struct usb_line6_variax {
+ /**
+ Generic Line6 USB data.
+ */
+ struct usb_line6 line6;
+
+ /**
+ Dump request structure.
+ Append two extra buffers for 3-pass data query.
+ */
+ struct line6_dump_request dumpreq; struct line6_dump_reqbuf extrabuf[2];
+
+ /**
+ Buffer for activation code.
+ */
+ unsigned char *buffer_activate;
+
+ /**
+ Model number.
+ */
+ int model;
+
+ /**
+ Current model settings.
+ */
+ struct variax_model model_data;
+
+ /**
+ Name of current model bank.
+ */
+ unsigned char bank[18];
+
+ /**
+ Position of volume dial.
+ */
+ int volume;
+
+ /**
+ Position of tone control dial.
+ */
+ int tone;
+
+ /**
+ Timer for delayed activation request.
+ */
+ struct timer_list activate_timer;
+};
+
+
+extern void variax_disconnect(struct usb_interface *interface);
+extern int variax_init(struct usb_interface *interface, struct usb_line6_variax *variax);
+extern void variax_process_message(struct usb_line6_variax *variax);
+
+
+#endif