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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/arm/broadcom/bcm2835/bcm2835_bscvar.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2012 Oleksandr Tymoshenko <[email protected]>

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 * Copyright (c) 2013 Luiz Otavio O Souza <[email protected]>

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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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#ifndef _BCM2835_BSCVAR_H

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#define _BCM2835_BSCVAR_H

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struct iic_msg;

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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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	void *			sc_intrhand;

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	struct iic_msg *	sc_curmsg;

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	bus_space_tag_t		sc_bst;

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	bus_space_handle_t	sc_bsh;

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	int			sc_debug;

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	uint16_t		sc_replen;

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	uint16_t		sc_totlen;

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	uint16_t		sc_resid;

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	uint16_t		sc_dlen;

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	uint8_t *		sc_data;

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	uint8_t			sc_flags;

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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_I2C_DONE		0x08

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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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