bcm2835_spivar.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
5 * Copyright (c) 2013 Luiz Otavio O Souza <loos@freebsd.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/sys/arm/broadcom/bcm2835/bcm2835_spivar.h 330897 2018-03-14 03:19:51Z eadler $
30 */
31
32#ifndef	_BCM2835_SPIVAR_H_
33#define	_BCM2835_SPIVAR_H_
34
35/*
36 * Only the available pins are listed here.
37 * i.e. CS2 isn't available.
38 */
39uint32_t bcm_spi_pins[] = {
40	7,	/* CS1 */
41	8,	/* CS0 */
42	9,	/* MISO */
43	10,	/* MOSI */
44	11	/* SCLK */
45};
46
47struct bcm_spi_softc {
48	device_t		sc_dev;
49	struct mtx		sc_mtx;
50	struct resource *	sc_mem_res;
51	struct resource *	sc_irq_res;
52	struct spi_command	*sc_cmd;
53	bus_space_tag_t		sc_bst;
54	bus_space_handle_t	sc_bsh;
55	uint32_t		sc_len;
56	uint32_t		sc_read;
57	uint32_t		sc_flags;
58	uint32_t		sc_written;
59	void *			sc_intrhand;
60};
61
62#define	BCM_SPI_BUSY		0x1
63
64#define BCM_SPI_WRITE(_sc, _off, _val)		\
65    bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
66#define BCM_SPI_READ(_sc, _off)			\
67    bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)
68
69#define BCM_SPI_LOCK(_sc)			\
70    mtx_lock(&(_sc)->sc_mtx)
71#define BCM_SPI_UNLOCK(_sc)			\
72    mtx_unlock(&(_sc)->sc_mtx)
73
74#endif	/* _BCM2835_SPIVAR_H_ */
75