terasic_de4led.c revision 245380
1/*- 2 * Copyright (c) 2012 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: head/sys/dev/terasic/de4led/terasic_de4led.c 245380 2013-01-13 16:57:11Z rwatson $"); 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/lock.h> 37#include <sys/mutex.h> 38#include <sys/rman.h> 39 40#include <machine/bus.h> 41#include <machine/resource.h> 42 43#include <dev/led/led.h> 44#include <dev/terasic/de4led/terasic_de4led.h> 45 46devclass_t terasic_de4led_devclass; 47 48static void 49terasic_de4led_update(struct terasic_de4led_softc *sc) 50{ 51 52 TERASIC_DE4LED_LOCK_ASSERT(sc); 53 54 bus_write_1(sc->tdl_res, TERASIC_DE4LED_OFF_LED, sc->tdl_bits); 55} 56 57static void 58led_update(struct terasic_de4led_softc *sc, int bit, int onoff) 59{ 60 61 TERASIC_DE4LED_LOCK(sc); 62 TERASIC_DE4LED_SETLED(sc, bit, onoff); 63 terasic_de4led_update(sc); 64 TERASIC_DE4LED_UNLOCK(sc); 65} 66 67static void 68led_0(void *arg, int onoff) 69{ 70 71 led_update(arg, 0, onoff); 72} 73 74static void 75led_1(void *arg, int onoff) 76{ 77 78 led_update(arg, 1, onoff); 79} 80 81static void 82led_2(void *arg, int onoff) 83{ 84 85 led_update(arg, 2, onoff); 86} 87 88static void 89led_3(void *arg, int onoff) 90{ 91 92 led_update(arg, 3, onoff); 93} 94 95static void 96led_4(void *arg, int onoff) 97{ 98 99 led_update(arg, 4, onoff); 100} 101 102static void 103led_5(void *arg, int onoff) 104{ 105 106 led_update(arg, 5, onoff); 107} 108 109static void 110led_6(void *arg, int onoff) 111{ 112 113 led_update(arg, 6, onoff); 114} 115 116static void 117led_7(void *arg, int onoff) 118{ 119 120 led_update(arg, 7, onoff); 121} 122 123void 124terasic_de4led_attach(struct terasic_de4led_softc *sc) 125{ 126 const char *cmd; 127 128 TERASIC_DE4LED_LOCK_INIT(sc); 129 130 /* 131 * Clear the LED array before we start. 132 */ 133 TERASIC_DE4LED_LOCK(sc); 134 TERASIC_DE4LED_CLEARBAR(sc); 135 terasic_de4led_update(sc); 136 TERASIC_DE4LED_UNLOCK(sc); 137 138 /* 139 * Register the LED array with led(4). 140 */ 141 sc->tdl_leds[0] = led_create(led_0, sc, "de4led_0"); 142 sc->tdl_leds[1] = led_create(led_1, sc, "de4led_1"); 143 sc->tdl_leds[2] = led_create(led_2, sc, "de4led_2"); 144 sc->tdl_leds[3] = led_create(led_3, sc, "de4led_3"); 145 sc->tdl_leds[4] = led_create(led_4, sc, "de4led_4"); 146 sc->tdl_leds[5] = led_create(led_5, sc, "de4led_5"); 147 sc->tdl_leds[6] = led_create(led_6, sc, "de4led_6"); 148 sc->tdl_leds[7] = led_create(led_7, sc, "de4led_7"); 149 150 if (resource_string_value(device_get_name(sc->tdl_dev), 151 sc->tdl_unit, "de4led_0_cmd", &cmd) == 0) 152 led_set("de4led_0", cmd); 153 if (resource_string_value(device_get_name(sc->tdl_dev), 154 sc->tdl_unit, "de4led_1_cmd", &cmd) == 0) 155 led_set("de4led_1", cmd); 156 if (resource_string_value(device_get_name(sc->tdl_dev), 157 sc->tdl_unit, "de4led_2_cmd", &cmd) == 0) 158 led_set("de4led_2", cmd); 159 if (resource_string_value(device_get_name(sc->tdl_dev), 160 sc->tdl_unit, "de4led_3_cmd", &cmd) == 0) 161 led_set("de4led_3", cmd); 162 if (resource_string_value(device_get_name(sc->tdl_dev), 163 sc->tdl_unit, "de4led_4_cmd", &cmd) == 0) 164 led_set("de4led_4", cmd); 165 if (resource_string_value(device_get_name(sc->tdl_dev), 166 sc->tdl_unit, "de4led_5_cmd", &cmd) == 0) 167 led_set("de4led_5", cmd); 168 if (resource_string_value(device_get_name(sc->tdl_dev), 169 sc->tdl_unit, "de4led_6_cmd", &cmd) == 0) 170 led_set("de4led_6", cmd); 171 if (resource_string_value(device_get_name(sc->tdl_dev), 172 sc->tdl_unit, "de4led_7_cmd", &cmd) == 0) 173 led_set("de4led_7", cmd); 174} 175 176void 177terasic_de4led_detach(struct terasic_de4led_softc *sc) 178{ 179 int i; 180 181 for (i = 0; i < 8; i++) { 182 led_destroy(sc->tdl_leds[i]); 183 sc->tdl_leds[i] = NULL; 184 } 185 TERASIC_DE4LED_LOCK(sc); 186 TERASIC_DE4LED_CLEARBAR(sc); 187 terasic_de4led_update(sc); 188 TERASIC_DE4LED_UNLOCK(sc); 189 TERASIC_DE4LED_LOCK_DESTROY(sc); 190} 191