terasic_de4led.h revision 239709
1239709Srwatson/*- 2239709Srwatson * Copyright (c) 2012 Robert N. M. Watson 3239709Srwatson * All rights reserved. 4239709Srwatson * 5239709Srwatson * This software was developed by SRI International and the University of 6239709Srwatson * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7239709Srwatson * ("CTSRD"), as part of the DARPA CRASH research programme. 8239709Srwatson * 9239709Srwatson * Redistribution and use in source and binary forms, with or without 10239709Srwatson * modification, are permitted provided that the following conditions 11239709Srwatson * are met: 12239709Srwatson * 1. Redistributions of source code must retain the above copyright 13239709Srwatson * notice, this list of conditions and the following disclaimer. 14239709Srwatson * 2. Redistributions in binary form must reproduce the above copyright 15239709Srwatson * notice, this list of conditions and the following disclaimer in the 16239709Srwatson * documentation and/or other materials provided with the distribution. 17239709Srwatson * 18239709Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19239709Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20239709Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21239709Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22239709Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23239709Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24239709Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25239709Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26239709Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27239709Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28239709Srwatson * SUCH DAMAGE. 29239709Srwatson * 30239709Srwatson * $FreeBSD: head/sys/dev/terasic/de4led/terasic_de4led.h 239709 2012-08-26 09:21:59Z rwatson $ 31239709Srwatson */ 32239709Srwatson 33239709Srwatson#ifndef _DEV_TERASIC_DE4LED_H_ 34239709Srwatson#define _DEV_TERASIC_DE4LED_H_ 35239709Srwatson 36239709Srwatson#define TERASIC_DE4LED_NUMLEDS 8 37239709Srwatsonstruct terasic_de4led_softc { 38239709Srwatson device_t tdl_dev; 39239709Srwatson int tdl_unit; 40239709Srwatson struct resource *tdl_res; 41239709Srwatson int tdl_rid; 42239709Srwatson struct mtx tdl_lock; 43239709Srwatson uint8_t tdl_bits; 44239709Srwatson struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS]; 45239709Srwatson}; 46239709Srwatson 47239709Srwatson#define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock) 48239709Srwatson#define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED) 49239709Srwatson#define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock) 50239709Srwatson#define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \ 51239709Srwatson "terasic_de4led", NULL, MTX_DEF) 52239709Srwatson#define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock) 53239709Srwatson 54239709Srwatson/* 55239709Srwatson * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O. 56239709Srwatson * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so 57239709Srwatson * on. 58239709Srwatson */ 59239709Srwatson#define TERASIC_DE4LED_CLEARBAR(sc) do { \ 60239709Srwatson (sc)->tdl_bits = 0; \ 61239709Srwatson} while (0) 62239709Srwatson#define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \ 63239709Srwatson (sc)->tdl_bits &= ~(1 << (led)); \ 64239709Srwatson (sc)->tdl_bits |= ((onoff != 0) ? 1 : 0) << (led); \ 65239709Srwatson} while (0) 66239709Srwatson 67239709Srwatson/* 68239709Srwatson * Only one offset matters for this device -- 0. 69239709Srwatson */ 70239709Srwatson#define TERASIC_DE4LED_OFF_LED 0 71239709Srwatson 72239709Srwatsonvoid terasic_de4led_attach(struct terasic_de4led_softc *sc); 73239709Srwatsonvoid terasic_de4led_detach(struct terasic_de4led_softc *sc); 74239709Srwatson 75239709Srwatson#endif /* _DEV_TERASIC_DE4LED_H_ */ 76