diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
new file mode 100644
index 0000000..3f9db51
--- /dev/null
+++ b/include/sound/rawmidi.h
@@ -0,0 +1,180 @@
+#ifndef __SOUND_RAWMIDI_H
+#define __SOUND_RAWMIDI_H
+
+/*
+ *  Abstract layer for MIDI v1.0 stream
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   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; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/asound.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/wait.h>
+#include <asm/semaphore.h>
+
+#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
+#include "seq_device.h"
+#endif
+
+/*
+ *  Raw MIDI interface
+ */
+
+typedef enum sndrv_rawmidi_stream snd_rawmidi_stream_t;
+typedef struct sndrv_rawmidi_info snd_rawmidi_info_t;
+typedef struct sndrv_rawmidi_params snd_rawmidi_params_t;
+typedef struct sndrv_rawmidi_status snd_rawmidi_status_t;
+
+#define SNDRV_RAWMIDI_DEVICES		8
+
+#define SNDRV_RAWMIDI_LFLG_OUTPUT	(1<<0)
+#define SNDRV_RAWMIDI_LFLG_INPUT	(1<<1)
+#define SNDRV_RAWMIDI_LFLG_OPEN		(3<<0)
+#define SNDRV_RAWMIDI_LFLG_APPEND	(1<<2)
+#define	SNDRV_RAWMIDI_LFLG_NOOPENLOCK	(1<<3)
+
+typedef struct _snd_rawmidi_runtime snd_rawmidi_runtime_t;
+typedef struct _snd_rawmidi_substream snd_rawmidi_substream_t;
+typedef struct _snd_rawmidi_str snd_rawmidi_str_t;
+
+typedef struct _snd_rawmidi_ops {
+	int (*open) (snd_rawmidi_substream_t * substream);
+	int (*close) (snd_rawmidi_substream_t * substream);
+	void (*trigger) (snd_rawmidi_substream_t * substream, int up);
+	void (*drain) (snd_rawmidi_substream_t * substream);
+} snd_rawmidi_ops_t;
+
+typedef struct _snd_rawmidi_global_ops {
+	int (*dev_register) (snd_rawmidi_t * rmidi);
+	int (*dev_unregister) (snd_rawmidi_t * rmidi);
+} snd_rawmidi_global_ops_t;
+
+struct _snd_rawmidi_runtime {
+	unsigned int drain: 1,	/* drain stage */
+		     oss: 1;	/* OSS compatible mode */
+	/* midi stream buffer */
+	unsigned char *buffer;	/* buffer for MIDI data */
+	size_t buffer_size;	/* size of buffer */
+	size_t appl_ptr;	/* application pointer */
+	size_t hw_ptr;		/* hardware pointer */
+	size_t avail_min;	/* min avail for wakeup */
+	size_t avail;		/* max used buffer for wakeup */
+	size_t xruns;		/* over/underruns counter */
+	/* misc */
+	spinlock_t lock;
+	wait_queue_head_t sleep;
+	/* event handler (new bytes, input only) */
+	void (*event)(snd_rawmidi_substream_t *substream);
+	/* defers calls to event [input] or ops->trigger [output] */
+	struct tasklet_struct tasklet;
+	/* private data */
+	void *private_data;
+	void (*private_free)(snd_rawmidi_substream_t *substream);
+};
+
+struct _snd_rawmidi_substream {
+	struct list_head list;		/* list of all substream for given stream */
+	int stream;			/* direction */
+	int number;			/* substream number */
+	unsigned int opened: 1,		/* open flag */
+		     append: 1,		/* append flag (merge more streams) */
+		     active_sensing: 1; /* send active sensing when close */
+	int use_count;			/* use counter (for output) */
+	size_t bytes;
+	snd_rawmidi_t *rmidi;
+	snd_rawmidi_str_t *pstr;
+	char name[32];
+	snd_rawmidi_runtime_t *runtime;
+	/* hardware layer */
+	snd_rawmidi_ops_t *ops;
+};
+
+typedef struct _snd_rawmidi_file {
+	snd_rawmidi_t *rmidi;
+	snd_rawmidi_substream_t *input;
+	snd_rawmidi_substream_t *output;
+} snd_rawmidi_file_t;
+
+struct _snd_rawmidi_str {
+	unsigned int substream_count;
+	unsigned int substream_opened;
+	struct list_head substreams;
+};
+
+struct _snd_rawmidi {
+	snd_card_t *card;
+
+	unsigned int device;		/* device number */
+	unsigned int info_flags;	/* SNDRV_RAWMIDI_INFO_XXXX */
+	char id[64];
+	char name[80];
+
+#ifdef CONFIG_SND_OSSEMUL
+	int ossreg;
+#endif
+
+	snd_rawmidi_global_ops_t *ops;
+
+	snd_rawmidi_str_t streams[2];
+
+	void *private_data;
+	void (*private_free) (snd_rawmidi_t *rmidi);
+
+	struct semaphore open_mutex;
+	wait_queue_head_t open_wait;
+
+	snd_info_entry_t *dev;
+	snd_info_entry_t *proc_entry;
+
+#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
+	snd_seq_device_t *seq_dev;
+#endif
+};
+
+/* main rawmidi functions */
+
+int snd_rawmidi_new(snd_card_t * card, char *id, int device,
+		    int output_count, int input_count,
+		    snd_rawmidi_t ** rmidi);
+void snd_rawmidi_set_ops(snd_rawmidi_t * rmidi, int stream, snd_rawmidi_ops_t * ops);
+
+/* callbacks */
+
+void snd_rawmidi_receive_reset(snd_rawmidi_substream_t * substream);
+int snd_rawmidi_receive(snd_rawmidi_substream_t * substream, const unsigned char *buffer, int count);
+void snd_rawmidi_transmit_reset(snd_rawmidi_substream_t * substream);
+int snd_rawmidi_transmit_empty(snd_rawmidi_substream_t * substream);
+int snd_rawmidi_transmit_peek(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count);
+int snd_rawmidi_transmit_ack(snd_rawmidi_substream_t * substream, int count);
+int snd_rawmidi_transmit(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count);
+
+/* main midi functions */
+
+int snd_rawmidi_info_select(snd_card_t *card, snd_rawmidi_info_t *info);
+int snd_rawmidi_kernel_open(int cardnum, int device, int subdevice, int mode, snd_rawmidi_file_t * rfile);
+int snd_rawmidi_kernel_release(snd_rawmidi_file_t * rfile);
+int snd_rawmidi_output_params(snd_rawmidi_substream_t * substream, snd_rawmidi_params_t * params);
+int snd_rawmidi_input_params(snd_rawmidi_substream_t * substream, snd_rawmidi_params_t * params);
+int snd_rawmidi_drop_output(snd_rawmidi_substream_t * substream);
+int snd_rawmidi_drain_output(snd_rawmidi_substream_t * substream);
+int snd_rawmidi_drain_input(snd_rawmidi_substream_t * substream);
+long snd_rawmidi_kernel_read(snd_rawmidi_substream_t * substream, unsigned char *buf, long count);
+long snd_rawmidi_kernel_write(snd_rawmidi_substream_t * substream, const unsigned char *buf, long count);
+
+#endif /* __SOUND_RAWMIDI_H */