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pxa2x0_i2c.h revision 1.3 
      1 /*	$NetBSD: pxa2x0_i2c.h,v 1.3 2011/06/19 16:16:42 nonaka Exp $	*/
      2 /*	$OpenBSD: pxa2x0_i2c.h,v 1.2 2005/05/26 03:52:07 pascoe Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 2005 Christopher Pascoe <pascoe (at) openbsd.org>
      6  *
      7  * Permission to use, copy, modify, and distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #ifndef _PXA2X0_I2C_H_
     21 #define _PXA2X0_I2C_H_
     22 
     23 #include <sys/bus.h>
     24 
     25 struct pxa2x0_i2c_softc {
     26 	device_t sc_dev;
     27 	bus_space_tag_t sc_iot;
     28 	bus_space_handle_t sc_ioh;
     29 
     30 	bus_size_t sc_size;
     31 
     32 	uint32_t sc_icr;
     33 
     34 	uint32_t sc_flags;
     35 #define	PI2CF_FAST_MODE		(1U << 0)
     36 };
     37 
     38 int	pxa2x0_i2c_attach_sub(struct pxa2x0_i2c_softc *);
     39 int	pxa2x0_i2c_detach_sub(struct pxa2x0_i2c_softc *);
     40 void	pxa2x0_i2c_init(struct pxa2x0_i2c_softc *);
     41 void	pxa2x0_i2c_open(struct pxa2x0_i2c_softc *);
     42 void	pxa2x0_i2c_close(struct pxa2x0_i2c_softc *);
     43 int	pxa2x0_i2c_read(struct pxa2x0_i2c_softc *sc, u_char, u_char *);
     44 int	pxa2x0_i2c_write(struct pxa2x0_i2c_softc *, u_char, u_char);
     45 int	pxa2x0_i2c_write_2(struct pxa2x0_i2c_softc *, u_char, u_short);
     46 int	pxa2x0_i2c_quick(struct pxa2x0_i2c_softc *sc, u_char, u_char);
     47 
     48 int	pxa2x0_i2c_send_start(struct pxa2x0_i2c_softc *, int flags);
     49 int	pxa2x0_i2c_send_stop(struct pxa2x0_i2c_softc *, int flags);
     50 int	pxa2x0_i2c_initiate_xfer(struct pxa2x0_i2c_softc *, uint16_t, int);
     51 int	pxa2x0_i2c_read_byte(struct pxa2x0_i2c_softc *, uint8_t *, int);
     52 int	pxa2x0_i2c_write_byte(struct pxa2x0_i2c_softc *, uint8_t, int);
     53 
     54 void	pxa2x0_i2c_reset(struct pxa2x0_i2c_softc *);
     55 int	pxa2x0_i2c_wait(struct pxa2x0_i2c_softc *, int, int);
     56 
     57 #endif	/* _PXA2X0_I2C_H_ */
     58