xref: /freebsd/sys/arm/broadcom/bcm2835/bcm2835_spivar.h (revision 8ef8939fd4581572e17860d7089cc6e06fd0221f)

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
 * Copyright (c) 2013 Luiz Otavio O Souza <loos@freebsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef	_BCM2835_SPIVAR_H_
#define	_BCM2835_SPIVAR_H_

struct bcm_spi_softc {
	device_t		sc_dev;
	struct mtx		sc_mtx;
	struct resource *	sc_mem_res;
	struct resource *	sc_irq_res;
	struct spi_command	*sc_cmd;
	struct thread		*sc_thread;
	bus_space_tag_t		sc_bst;
	bus_space_handle_t	sc_bsh;
	uint32_t		sc_len;
	uint32_t		sc_read;
	uint32_t		sc_flags;
	uint32_t		sc_written;
	void *			sc_intrhand;
};

#define	BCM_SPI_BUSY		0x1
#define	BCM_SPI_KEEP_CS		0x2

#define BCM_SPI_WRITE(_sc, _off, _val)		\
    bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
#define BCM_SPI_READ(_sc, _off)			\
    bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)

#define BCM_SPI_LOCK(_sc)			\
    mtx_lock(&(_sc)->sc_mtx)
#define BCM_SPI_UNLOCK(_sc)			\
    mtx_unlock(&(_sc)->sc_mtx)

#endif	/* _BCM2835_SPIVAR_H_ */