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 * $FreeBSD$ 28 */ 29 30 #ifndef _BCM2835_BSCVAR_H 31 #define _BCM2835_BSCVAR_H 32 33 struct { 34 uint32_t sda; 35 uint32_t scl; 36 unsigned long start; 37 } bcm_bsc_pins[] = { 38 { 0, 1, 0x205000 }, /* BSC0 GPIO pins and base address. */ 39 { 2, 3, 0x804000 } /* BSC1 GPIO pins and base address. */ 40 }; 41 #define BCM_BSC_BASE_MASK 0x00ffffff 42 43 struct bcm_bsc_softc { 44 device_t sc_dev; 45 device_t sc_iicbus; 46 struct mtx sc_mtx; 47 struct resource * sc_mem_res; 48 struct resource * sc_irq_res; 49 bus_space_tag_t sc_bst; 50 bus_space_handle_t sc_bsh; 51 uint16_t sc_resid; 52 uint8_t *sc_data; 53 uint8_t sc_flags; 54 void * sc_intrhand; 55 }; 56 57 #define BCM_I2C_BUSY 0x01 58 #define BCM_I2C_READ 0x02 59 #define BCM_I2C_ERROR 0x04 60 61 #define BCM_BSC_WRITE(_sc, _off, _val) \ 62 bus_space_write_4((_sc)->sc_bst, (_sc)->sc_bsh, _off, _val) 63 #define BCM_BSC_READ(_sc, _off) \ 64 bus_space_read_4((_sc)->sc_bst, (_sc)->sc_bsh, _off) 65 66 #define BCM_BSC_LOCK(_sc) \ 67 mtx_lock(&(_sc)->sc_mtx) 68 #define BCM_BSC_UNLOCK(_sc) \ 69 mtx_unlock(&(_sc)->sc_mtx) 70 71 #endif /* _BCM2835_BSCVAR_H_ */ 72