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 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/lock.h> 39#include <sys/mutex.h> 40#include <sys/rman.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44 45#include <dev/led/led.h> 46#include <dev/terasic/de4led/terasic_de4led.h> 47 48devclass_t terasic_de4led_devclass; 49 50static void 51terasic_de4led_update(struct terasic_de4led_softc *sc) 52{ 53 54 TERASIC_DE4LED_LOCK_ASSERT(sc); 55 56 bus_write_1(sc->tdl_res, TERASIC_DE4LED_OFF_LED, sc->tdl_bits); 57} 58 59static void 60led_update(struct terasic_de4led_softc *sc, int bit, int onoff) 61{ 62 63 TERASIC_DE4LED_LOCK(sc); 64 TERASIC_DE4LED_SETLED(sc, bit, onoff); 65 terasic_de4led_update(sc); 66 TERASIC_DE4LED_UNLOCK(sc); 67} 68 69static void 70led_0(void *arg, int onoff) 71{ 72 73 led_update(arg, 0, onoff); 74} 75 76static void 77led_1(void *arg, int onoff) 78{ 79 80 led_update(arg, 1, onoff); 81} 82 83static void 84led_2(void *arg, int onoff) 85{ 86 87 led_update(arg, 2, onoff); 88} 89 90static void 91led_3(void *arg, int onoff) 92{ 93 94 led_update(arg, 3, onoff); 95} 96 97static void 98led_4(void *arg, int onoff) 99{ 100 101 led_update(arg, 4, onoff); 102} 103 104static void 105led_5(void *arg, int onoff) 106{ 107 108 led_update(arg, 5, onoff); 109} 110 111static void 112led_6(void *arg, int onoff) 113{ 114 115 led_update(arg, 6, onoff); 116} 117 118static void 119led_7(void *arg, int onoff) 120{ 121 122 led_update(arg, 7, onoff); 123} 124 125void 126terasic_de4led_attach(struct terasic_de4led_softc *sc) 127{ 128 const char *cmd; 129 130 TERASIC_DE4LED_LOCK_INIT(sc); 131 132 /* 133 * Clear the LED array before we start. 134 */ 135 TERASIC_DE4LED_LOCK(sc); 136 TERASIC_DE4LED_CLEARBAR(sc); 137 terasic_de4led_update(sc); 138 TERASIC_DE4LED_UNLOCK(sc); 139 140 /* 141 * Register the LED array with led(4). 142 */ 143 sc->tdl_leds[0] = led_create(led_0, sc, "de4led_0"); 144 sc->tdl_leds[1] = led_create(led_1, sc, "de4led_1"); 145 sc->tdl_leds[2] = led_create(led_2, sc, "de4led_2"); 146 sc->tdl_leds[3] = led_create(led_3, sc, "de4led_3"); 147 sc->tdl_leds[4] = led_create(led_4, sc, "de4led_4"); 148 sc->tdl_leds[5] = led_create(led_5, sc, "de4led_5"); 149 sc->tdl_leds[6] = led_create(led_6, sc, "de4led_6"); 150 sc->tdl_leds[7] = led_create(led_7, sc, "de4led_7"); 151 152 if (resource_string_value(device_get_name(sc->tdl_dev), 153 sc->tdl_unit, "de4led_0_cmd", &cmd) == 0) 154 led_set("de4led_0", cmd); 155 if (resource_string_value(device_get_name(sc->tdl_dev), 156 sc->tdl_unit, "de4led_1_cmd", &cmd) == 0) 157 led_set("de4led_1", cmd); 158 if (resource_string_value(device_get_name(sc->tdl_dev), 159 sc->tdl_unit, "de4led_2_cmd", &cmd) == 0) 160 led_set("de4led_2", cmd); 161 if (resource_string_value(device_get_name(sc->tdl_dev), 162 sc->tdl_unit, "de4led_3_cmd", &cmd) == 0) 163 led_set("de4led_3", cmd); 164 if (resource_string_value(device_get_name(sc->tdl_dev), 165 sc->tdl_unit, "de4led_4_cmd", &cmd) == 0) 166 led_set("de4led_4", cmd); 167 if (resource_string_value(device_get_name(sc->tdl_dev), 168 sc->tdl_unit, "de4led_5_cmd", &cmd) == 0) 169 led_set("de4led_5", cmd); 170 if (resource_string_value(device_get_name(sc->tdl_dev), 171 sc->tdl_unit, "de4led_6_cmd", &cmd) == 0) 172 led_set("de4led_6", cmd); 173 if (resource_string_value(device_get_name(sc->tdl_dev), 174 sc->tdl_unit, "de4led_7_cmd", &cmd) == 0) 175 led_set("de4led_7", cmd); 176} 177 178void 179terasic_de4led_detach(struct terasic_de4led_softc *sc) 180{ 181 int i; 182 183 for (i = 0; i < 8; i++) { 184 led_destroy(sc->tdl_leds[i]); 185 sc->tdl_leds[i] = NULL; 186 } 187 TERASIC_DE4LED_LOCK(sc); 188 TERASIC_DE4LED_CLEARBAR(sc); 189 terasic_de4led_update(sc); 190 TERASIC_DE4LED_UNLOCK(sc); 191 TERASIC_DE4LED_LOCK_DESTROY(sc); 192} 193