/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2012 Robert N. M. Watson * All rights reserved. * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) * ("CTSRD"), as part of the DARPA CRASH research programme. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _DEV_TERASIC_DE4LED_H_ #define _DEV_TERASIC_DE4LED_H_ #define TERASIC_DE4LED_NUMLEDS 8 struct terasic_de4led_softc { device_t tdl_dev; int tdl_unit; struct resource *tdl_res; int tdl_rid; struct mtx tdl_lock; uint8_t tdl_bits; struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS]; }; #define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock) #define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED) #define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock) #define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \ "terasic_de4led", NULL, MTX_DEF) #define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock) /* * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O. * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so * on. */ #define TERASIC_DE4LED_CLEARBAR(sc) do { \ (sc)->tdl_bits = 0; \ } while (0) #define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \ (sc)->tdl_bits &= ~(1 << (led)); \ (sc)->tdl_bits |= ((onoff != 0) ? 1 : 0) << (led); \ } while (0) /* * Only one offset matters for this device -- 0. */ #define TERASIC_DE4LED_OFF_LED 0 void terasic_de4led_attach(struct terasic_de4led_softc *sc); void terasic_de4led_detach(struct terasic_de4led_softc *sc); extern devclass_t terasic_de4led_devclass; #endif /* _DEV_TERASIC_DE4LED_H_ */ |