1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9 * ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: stable/12/sys/dev/terasic/de4led/terasic_de4led.h 326255 2017-11-27 14:52:40Z pfg $ 33 */ 34 35 #ifndef _DEV_TERASIC_DE4LED_H_ 36 #define _DEV_TERASIC_DE4LED_H_ 37 38 #define TERASIC_DE4LED_NUMLEDS 8 39 struct terasic_de4led_softc { 40 device_t tdl_dev; 41 int tdl_unit; 42 struct resource *tdl_res; 43 int tdl_rid; 44 struct mtx tdl_lock; 45 uint8_t tdl_bits; 46 struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS]; 47 }; 48 49 #define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock) 50 #define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED) 51 #define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock) 52 #define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \ 53 "terasic_de4led", NULL, MTX_DEF) 54 #define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock) 55 56 /* 57 * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O. 58 * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so 59 * on. 60 */ 61 #define TERASIC_DE4LED_CLEARBAR(sc) do { \ 62 (sc)->tdl_bits = 0; \ 63 } while (0) 64 #define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \ 65 (sc)->tdl_bits &= ~(1 << (led)); \ 66 (sc)->tdl_bits |= ((onoff != 0) ? 1 : 0) << (led); \ 67 } while (0) 68 69 /* 70 * Only one offset matters for this device -- 0. 71 */ 72 #define TERASIC_DE4LED_OFF_LED 0 73 74 void terasic_de4led_attach(struct terasic_de4led_softc *sc); 75 void terasic_de4led_detach(struct terasic_de4led_softc *sc); 76 77 extern devclass_t terasic_de4led_devclass; 78 79 #endif /* _DEV_TERASIC_DE4LED_H_ */ 80