72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/*-
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* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
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* Copyright (c) 2013 Luiz Otavio O Souza <loos@freebsd.org>
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* All rights reserved.
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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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#ifndef _BCM2835_BSCVAR_H
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#define _BCM2835_BSCVAR_H
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struct {
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uint32_t sda;
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uint32_t scl;
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unsigned long start;
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} bcm_bsc_pins[] = {
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{ 0, 1, 0x205000 }, /* BSC0 GPIO pins and base address. */
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{ 2, 3, 0x804000 } /* BSC1 GPIO pins and base address. */
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};
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#define BCM_BSC_BASE_MASK 0x00ffffff
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struct bcm_bsc_softc {
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device_t sc_dev;
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device_t sc_iicbus;
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struct mtx sc_mtx;
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struct resource * sc_mem_res;
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struct resource * sc_irq_res;
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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uint16_t sc_resid;
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uint8_t *sc_data;
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uint8_t sc_flags;
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void * sc_intrhand;
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};
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#define BCM_I2C_BUSY 0x01
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#define BCM_I2C_READ 0x02
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#define BCM_I2C_ERROR 0x04
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#define BCM_BSC_WRITE(_sc, _off, _val) \
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bus_space_write_4((_sc)->sc_bst, (_sc)->sc_bsh, _off, _val)
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#define BCM_BSC_READ(_sc, _off) \
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bus_space_read_4((_sc)->sc_bst, (_sc)->sc_bsh, _off)
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#define BCM_BSC_LOCK(_sc) \
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mtx_lock(&(_sc)->sc_mtx)
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#define BCM_BSC_UNLOCK(_sc) \
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mtx_unlock(&(_sc)->sc_mtx)
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#endif /* _BCM2835_BSCVAR_H_ */
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