bcm2835_bscvar.h revision 256959 
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: head/sys/arm/broadcom/bcm2835/bcm2835_bscvar.h 256959 2013-10-23 12:29:39Z loos $
28 */
29
30#ifndef _BCM2835_BSCVAR_H
31#define _BCM2835_BSCVAR_H
32
33struct {
34	uint32_t	sda;
35	uint32_t	scl;
36} bcm_bsc_pins[] = {
37	{ 0, 1 },	/* BSC0 GPIO pins. */
38	{ 2, 3 }	/* BSC1 GPIO pins. */
39};
40
41struct bcm_bsc_softc {
42	device_t		sc_dev;
43	struct mtx		sc_mtx;
44	struct resource *	sc_mem_res;
45	struct resource *	sc_irq_res;
46	bus_space_tag_t		sc_bst;
47	bus_space_handle_t	sc_bsh;
48	uint16_t		sc_resid;
49	uint8_t			*sc_data;
50	uint8_t			sc_flags;
51	void *			sc_intrhand;
52};
53
54#define	BCM_I2C_BUSY		0x01
55#define	BCM_I2C_READ		0x02
56#define	BCM_I2C_ERROR		0x04
57
58#define	BCM_BSC_WRITE(_sc, _off, _val)		\
59    bus_space_write_4(_sc->sc_bst, _sc->sc_bsh, _off, _val)
60#define	BCM_BSC_READ(_sc, _off)			\
61    bus_space_read_4(_sc->sc_bst, _sc->sc_bsh, _off)
62
63#define	BCM_BSC_LOCK(_sc)			\
64    mtx_lock(&(_sc)->sc_mtx)
65#define	BCM_BSC_UNLOCK(_sc)			\
66    mtx_unlock(&(_sc)->sc_mtx)
67
68#endif	/* _BCM2835_BSCVAR_H_ */
69