terasic_de4led.h revision 239709
1228753Smm/*- 2228753Smm * Copyright (c) 2012 Robert N. M. Watson 3228753Smm * All rights reserved. 4228753Smm * 5228753Smm * This software was developed by SRI International and the University of 6228753Smm * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7228753Smm * ("CTSRD"), as part of the DARPA CRASH research programme. 8228753Smm * 9228753Smm * Redistribution and use in source and binary forms, with or without 10228753Smm * modification, are permitted provided that the following conditions 11228753Smm * are met: 12228753Smm * 1. Redistributions of source code must retain the above copyright 13228753Smm * notice, this list of conditions and the following disclaimer. 14228753Smm * 2. Redistributions in binary form must reproduce the above copyright 15228753Smm * notice, this list of conditions and the following disclaimer in the 16228753Smm * documentation and/or other materials provided with the distribution. 17228753Smm * 18228753Smm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19228753Smm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20228753Smm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21228753Smm * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22228753Smm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23228753Smm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24228753Smm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25228753Smm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26228763Smm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27228753Smm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28228753Smm * SUCH DAMAGE. 29228753Smm * 30228753Smm * $FreeBSD: head/sys/dev/terasic/de4led/terasic_de4led.h 239709 2012-08-26 09:21:59Z rwatson $ 31228753Smm */ 32228753Smm 33228753Smm#ifndef _DEV_TERASIC_DE4LED_H_ 34228753Smm#define _DEV_TERASIC_DE4LED_H_ 35228753Smm 36228753Smm#define TERASIC_DE4LED_NUMLEDS 8 37228753Smmstruct terasic_de4led_softc { 38228753Smm device_t tdl_dev; 39228753Smm int tdl_unit; 40228753Smm struct resource *tdl_res; 41228753Smm int tdl_rid; 42232153Smm struct mtx tdl_lock; 43232153Smm uint8_t tdl_bits; 44228753Smm struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS]; 45228753Smm}; 46232153Smm 47228753Smm#define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock) 48228753Smm#define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED) 49228753Smm#define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock) 50228753Smm#define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \ 51228753Smm "terasic_de4led", NULL, MTX_DEF) 52228753Smm#define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock) 53248616Smm 54248616Smm/* 55228753Smm * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O. 56228753Smm * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so 57302001Smm * on. 58302001Smm */ 59228753Smm#define TERASIC_DE4LED_CLEARBAR(sc) do { \ 60232153Smm (sc)->tdl_bits = 0; \ 61228753Smm} while (0) 62228753Smm#define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \ 63228753Smm (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