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 * $FreeBSD$ 30 */ 31 32 #ifndef _BCM2835_BSCVAR_H 33 #define _BCM2835_BSCVAR_H 34 35 struct { 36 uint32_t sda; 37 uint32_t scl; 38 unsigned long start; 39 } bcm_bsc_pins[] = { 40 { 0, 1, 0x205000 }, /* BSC0 GPIO pins and base address. */ 41 { 2, 3, 0x804000 } /* BSC1 GPIO pins and base address. */ 42 }; 43 #define BCM_BSC_BASE_MASK 0x00ffffff 44 45 struct iic_msg; 46 47 struct bcm_bsc_softc { 48 device_t sc_dev; 49 device_t sc_iicbus; 50 struct mtx sc_mtx; 51 struct resource * sc_mem_res; 52 struct resource * sc_irq_res; 53 void * sc_intrhand; 54 struct iic_msg * sc_curmsg; 55 bus_space_tag_t sc_bst; 56 bus_space_handle_t sc_bsh; 57 int sc_debug; 58 uint16_t sc_replen; 59 uint16_t sc_totlen; 60 uint16_t sc_resid; 61 uint16_t sc_dlen; 62 uint8_t * sc_data; 63 uint8_t sc_flags; 64 }; 65 66 #define BCM_I2C_BUSY 0x01 67 #define BCM_I2C_READ 0x02 68 #define BCM_I2C_ERROR 0x04 69 #define BCM_I2C_DONE 0x08 70 71 #define BCM_BSC_WRITE(_sc, _off, _val) \ 72 bus_space_write_4((_sc)->sc_bst, (_sc)->sc_bsh, _off, _val) 73 #define BCM_BSC_READ(_sc, _off) \ 74 bus_space_read_4((_sc)->sc_bst, (_sc)->sc_bsh, _off) 75 76 #define BCM_BSC_LOCK(_sc) \ 77 mtx_lock(&(_sc)->sc_mtx) 78 #define BCM_BSC_UNLOCK(_sc) \ 79 mtx_unlock(&(_sc)->sc_mtx) 80 81 #endif /* _BCM2835_BSCVAR_H_ */ 82