terasic_de4led.h revision 239709
1/*- 2 * Copyright (c) 2012 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: head/sys/dev/terasic/de4led/terasic_de4led.h 239709 2012-08-26 09:21:59Z rwatson $ 31 */ 32 33#ifndef _DEV_TERASIC_DE4LED_H_ 34#define _DEV_TERASIC_DE4LED_H_ 35 36#define TERASIC_DE4LED_NUMLEDS 8 37struct terasic_de4led_softc { 38 device_t tdl_dev; 39 int tdl_unit; 40 struct resource *tdl_res; 41 int tdl_rid; 42 struct mtx tdl_lock; 43 uint8_t tdl_bits; 44 struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS]; 45}; 46 47#define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock) 48#define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED) 49#define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock) 50#define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \ 51 "terasic_de4led", NULL, MTX_DEF) 52#define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock) 53 54/* 55 * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O. 56 * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so 57 * on. 58 */ 59#define TERASIC_DE4LED_CLEARBAR(sc) do { \ 60 (sc)->tdl_bits = 0; \ 61} while (0) 62#define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \ 63 (sc)->tdl_bits &= ~(1 << (led)); \ 64 (sc)->tdl_bits |= ((onoff != 0) ? 1 : 0) << (led); \ 65} while (0) 66 67/* 68 * Only one offset matters for this device -- 0. 69 */ 70#define TERASIC_DE4LED_OFF_LED 0 71 72void terasic_de4led_attach(struct terasic_de4led_softc *sc); 73void terasic_de4led_detach(struct terasic_de4led_softc *sc); 74 75#endif /* _DEV_TERASIC_DE4LED_H_ */ 76