Look Ma' what I found on my harddisk ...

 o New faster syscalls for 2.1.x, too
 o Upgrade to 2.1.89.

Don't try to run this.  It's flaky as hell.  But feel free to debug ...

1 files changed, 57 insertions, 0 deletions

diff --git a/include/asm-ppc/adb.h b/include/asm-ppc/adb.h
new file mode 100644
index 000000000..92fd06e02
--- /dev/null
+++ b/include/asm-ppc/adb.h
@@ -0,0 +1,57 @@
+/*
+ * Definitions for ADB (Apple Desktop Bus) support.
+ */
+#ifndef __PPC_ADB_H
+#define __PPC_ADB_H
+
+/* ADB commands */
+#define ADB_BUSRESET		0
+#define ADB_FLUSH(id)		(1 + ((id) << 4))
+#define ADB_WRITEREG(id, reg)	(8 + (reg) + ((id) << 4))
+#define ADB_READREG(id, reg)	(0xc + (reg) + ((id) << 4))
+
+/* ADB default device IDs (upper 4 bits of ADB command byte) */
+#define ADB_DONGLE	1	/* "software execution control" devices */
+#define ADB_KEYBOARD	2
+#define ADB_MOUSE	3
+#define ADB_TABLET	4
+#define ADB_MODEM	5
+#define ADB_MISC	7	/* maybe a monitor */
+
+
+#ifdef __KERNEL__
+
+struct adb_request {
+    unsigned char data[16];
+    int nbytes;
+    unsigned char reply[16];
+    int reply_len;
+    unsigned char reply_expected;
+    unsigned char sent;
+    unsigned char complete;
+    void (*done)(struct adb_request *);
+    void *arg;
+    struct adb_request *next;
+};
+
+extern enum adb_hw {
+	ADB_NONE, ADB_VIACUDA, ADB_VIAPMU, ADB_MACIO
+} adb_hardware;
+
+extern int (*adb_send_request)(struct adb_request *req, int sync);
+extern int (*adb_autopoll)(int on);
+
+/* Values for adb_request flags */
+#define ADBREQ_REPLY	1	/* expect reply */
+#define ADBREQ_SYNC	2	/* poll until done */
+
+void adb_init(void);
+int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
+		int flags, int nbytes, ...);
+int adb_register(int default_id,
+		 void (*handler)(unsigned char *, int, struct pt_regs *, int));
+void adb_input(unsigned char *, int, struct pt_regs *, int);
+
+#endif /* __KERNEL__ */
+
+#endif /* __PPC_ADB_H */