bcm2835_spivar.h revision 259325 
1/*-
2 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
3 * Copyright (c) 2013 Luiz Otavio O Souza <loos@freebsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/10/sys/arm/broadcom/bcm2835/bcm2835_spivar.h 259325 2013-12-13 19:27:23Z ian $
28 */
29
30#ifndef	_BCM2835_SPIVAR_H_
31#define	_BCM2835_SPIVAR_H_
32
33/*
34 * Only the available pins are listed here.
35 * i.e. CS2 isn't available.
36 */
37uint32_t bcm_spi_pins[] = {
38	7,	/* CS1 */
39	8,	/* CS0 */
40	9,	/* MISO */
41	10,	/* MOSI */
42	11	/* SCLK */
43};
44
45struct bcm_spi_softc {
46	device_t		sc_dev;
47	struct mtx		sc_mtx;
48	struct resource *	sc_mem_res;
49	struct resource *	sc_irq_res;
50	struct spi_command	*sc_cmd;
51	bus_space_tag_t		sc_bst;
52	bus_space_handle_t	sc_bsh;
53	uint32_t		sc_len;
54	uint32_t		sc_read;
55	uint32_t		sc_flags;
56	uint32_t		sc_written;
57	void *			sc_intrhand;
58};
59
60#define	BCM_SPI_BUSY		0x1
61
62#define BCM_SPI_WRITE(_sc, _off, _val)		\
63    bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
64#define BCM_SPI_READ(_sc, _off)			\
65    bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)
66
67#define BCM_SPI_LOCK(_sc)			\
68    mtx_lock(&(_sc)->sc_mtx)
69#define BCM_SPI_UNLOCK(_sc)			\
70    mtx_unlock(&(_sc)->sc_mtx)
71
72#endif	/* _BCM2835_SPIVAR_H_ */
73