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diff --git a/kernel/include/sound/seq_oss.h b/kernel/include/sound/seq_oss.h
new file mode 100644
index 000000000..d0b27ec6f
--- /dev/null
+++ b/kernel/include/sound/seq_oss.h
@@ -0,0 +1,96 @@
+#ifndef __SOUND_SEQ_OSS_H
+#define __SOUND_SEQ_OSS_H
+
+/*
+ * OSS compatible sequencer driver
+ *
+ * Copyright (C) 1998,99 Takashi Iwai
+ *
+ * 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/asequencer.h>
+#include <sound/seq_kernel.h>
+
+/*
+ * argument structure for synthesizer operations
+ */
+struct snd_seq_oss_arg {
+	/* given by OSS sequencer */
+	int app_index;	/* application unique index */
+	int file_mode;	/* file mode - see below */
+	int seq_mode;	/* sequencer mode - see below */
+
+	/* following must be initialized in open callback */
+	struct snd_seq_addr addr;	/* opened port address */
+	void *private_data;	/* private data for lowlevel drivers */
+
+	/* note-on event passing mode: initially given by OSS seq,
+	 * but configurable by drivers - see below
+	 */
+	int event_passing;
+};
+
+
+/*
+ * synthesizer operation callbacks
+ */
+struct snd_seq_oss_callback {
+	struct module *owner;
+	int (*open)(struct snd_seq_oss_arg *p, void *closure);
+	int (*close)(struct snd_seq_oss_arg *p);
+	int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);
+	int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);
+	int (*reset)(struct snd_seq_oss_arg *p);
+	int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);
+};
+
+/* flag: file_mode */
+#define SNDRV_SEQ_OSS_FILE_ACMODE		3
+#define SNDRV_SEQ_OSS_FILE_READ		1
+#define SNDRV_SEQ_OSS_FILE_WRITE		2
+#define SNDRV_SEQ_OSS_FILE_NONBLOCK	4
+
+/* flag: seq_mode */
+#define SNDRV_SEQ_OSS_MODE_SYNTH		0
+#define SNDRV_SEQ_OSS_MODE_MUSIC		1
+
+/* flag: event_passing */
+#define SNDRV_SEQ_OSS_PROCESS_EVENTS	0	/* key == 255 is processed as velocity change */
+#define SNDRV_SEQ_OSS_PASS_EVENTS		1	/* pass all events to callback */
+#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS	2	/* key >= 128 will be processed as key-pressure */
+
+/* default control rate: fixed */
+#define SNDRV_SEQ_OSS_CTRLRATE		100
+
+/* default max queue length: configurable by module option */
+#define SNDRV_SEQ_OSS_MAX_QLEN		1024
+
+
+/*
+ * data pointer to snd_seq_register_device
+ */
+struct snd_seq_oss_reg {
+	int type;
+	int subtype;
+	int nvoices;
+	struct snd_seq_oss_callback oper;
+	void *private_data;
+};
+
+/* device id */
+#define SNDRV_SEQ_DEV_ID_OSS		"seq-oss"
+
+#endif /* __SOUND_SEQ_OSS_H */