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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: pxa2x0_i2c.h,v 1.2 2005/05/26 03:52:07 pascoe Exp $	*/

/*
 * Copyright (c) 2005 Christopher Pascoe <pascoe@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _PXA2X0_I2C_H_
#define _PXA2X0_I2C_H_

#include <machine/bus.h>

struct pxa2x0_i2c_softc {
	struct device sc_dev;
	bus_space_tag_t sc_iot;
	bus_space_handle_t sc_ioh;
	bus_size_t sc_size;
};

int	pxa2x0_i2c_attach_sub(struct pxa2x0_i2c_softc *);
int	pxa2x0_i2c_detach_sub(struct pxa2x0_i2c_softc *);
void	pxa2x0_i2c_init(struct pxa2x0_i2c_softc *);
void	pxa2x0_i2c_open(struct pxa2x0_i2c_softc *);
void	pxa2x0_i2c_close(struct pxa2x0_i2c_softc *);
int	pxa2x0_i2c_read(struct pxa2x0_i2c_softc *sc, u_char, u_char *);
int	pxa2x0_i2c_write(struct pxa2x0_i2c_softc *, u_char, u_char);
int	pxa2x0_i2c_write_2(struct pxa2x0_i2c_softc *, u_char, u_short);

#endif