72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/* $NetBSD: pxa2x0_i2c.h,v 1.5 2011/08/06 03:42:11 kiyohara Exp $ */
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/* $OpenBSD: pxa2x0_i2c.h,v 1.2 2005/05/26 03:52:07 pascoe Exp $ */
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/*
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* Copyright (c) 2005 Christopher Pascoe <pascoe@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _PXA2X0_I2C_H_
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#define _PXA2X0_I2C_H_
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#include <sys/bus.h>
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struct pxa2x0_i2c_softc {
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device_t sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_addr_t sc_addr;
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bus_size_t sc_size;
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uint32_t sc_icr;
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uint32_t sc_isar; /* I2C Slave Address */
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enum {
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PI2C_STAT_UNKNOWN = -2,
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PI2C_STAT_ERROR = -1,
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PI2C_STAT_INIT = 0,
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PI2C_STAT_SEND,
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PI2C_STAT_RECEIVE,
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PI2C_STAT_STOP,
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} sc_stat;
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uint32_t sc_flags;
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#define PI2CF_FAST_MODE (1U << 0)
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};
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int pxa2x0_i2c_attach_sub(struct pxa2x0_i2c_softc *);
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int pxa2x0_i2c_detach_sub(struct pxa2x0_i2c_softc *);
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void pxa2x0_i2c_init(struct pxa2x0_i2c_softc *);
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void pxa2x0_i2c_open(struct pxa2x0_i2c_softc *);
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void pxa2x0_i2c_close(struct pxa2x0_i2c_softc *);
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int pxa2x0_i2c_read(struct pxa2x0_i2c_softc *, u_char, u_char *);
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int pxa2x0_i2c_write(struct pxa2x0_i2c_softc *, u_char, u_char);
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int pxa2x0_i2c_write_2(struct pxa2x0_i2c_softc *, u_char, u_short);
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int pxa2x0_i2c_quick(struct pxa2x0_i2c_softc *, u_char, u_char);
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int pxa2x0_i2c_send_start(struct pxa2x0_i2c_softc *, int flags);
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int pxa2x0_i2c_send_stop(struct pxa2x0_i2c_softc *, int flags);
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int pxa2x0_i2c_initiate_xfer(struct pxa2x0_i2c_softc *, uint16_t, int);
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int pxa2x0_i2c_read_byte(struct pxa2x0_i2c_softc *, uint8_t *, int);
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int pxa2x0_i2c_write_byte(struct pxa2x0_i2c_softc *, uint8_t, int);
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void pxa2x0_i2c_reset(struct pxa2x0_i2c_softc *);
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int pxa2x0_i2c_wait(struct pxa2x0_i2c_softc *, int, int);
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int pxa2x0_i2c_poll(struct pxa2x0_i2c_softc *, int, char *, int);
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int pxa2x0_i2c_intr_sub(struct pxa2x0_i2c_softc *, int *, uint8_t *);
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#endif /* _PXA2X0_I2C_H_ */
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