f86e60008b
o Remove All Rights Reserved from my notices o imp@FreeBSD.org everywhere o regularize punctiation, eliminate date ranges o Make sure that it's clear that I don't claim All Rights reserved by listing All Rights Reserved on same line as other copyright holders (but not me). Other such holders are also listed last where it's clear.
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*-
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* Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define SPIBUS_IVAR(d) (struct spibus_ivar *) device_get_ivars(d)
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#define SPIBUS_SOFTC(d) (struct spibus_softc *) device_get_softc(d)
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struct spibus_softc
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{
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device_t dev;
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};
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#define SPIBUS_MODE_NONE 0
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#define SPIBUS_MODE_CPHA 1
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#define SPIBUS_MODE_CPOL 2
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#define SPIBUS_MODE_CPOL_CPHA 3
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struct spibus_ivar
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{
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uint32_t cs;
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uint32_t mode;
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uint32_t clock;
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};
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#define SPIBUS_CS_HIGH (1U << 31)
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enum {
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SPIBUS_IVAR_CS, /* chip select that we're on */
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SPIBUS_IVAR_MODE, /* SPI mode (0-3) */
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SPIBUS_IVAR_CLOCK, /* maximum clock freq for device */
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};
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#define SPIBUS_ACCESSOR(A, B, T) \
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static inline int \
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spibus_get_ ## A(device_t dev, T *t) \
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{ \
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return BUS_READ_IVAR(device_get_parent(dev), dev, \
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SPIBUS_IVAR_ ## B, (uintptr_t *) t); \
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} \
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static inline int \
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spibus_set_ ## A(device_t dev, T t) \
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{ \
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return BUS_WRITE_IVAR(device_get_parent(dev), dev, \
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SPIBUS_IVAR_ ## B, (uintptr_t) t); \
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}
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SPIBUS_ACCESSOR(cs, CS, uint32_t)
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SPIBUS_ACCESSOR(mode, MODE, uint32_t)
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SPIBUS_ACCESSOR(clock, CLOCK, uint32_t)
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extern driver_t spibus_driver;
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extern devclass_t spibus_devclass;
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extern driver_t ofw_spibus_driver;
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extern devclass_t ofw_spibus_devclass;
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