terasic_de4led.c revision 239709
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 239709 2012-08-26 09:21:59Z 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 46static void 47terasic_de4led_update(struct terasic_de4led_softc *sc) 48{ 49 50 TERASIC_DE4LED_LOCK_ASSERT(sc); 51 52 bus_write_1(sc->tdl_res, TERASIC_DE4LED_OFF_LED, sc->tdl_bits); 53} 54 55static void 56led_update(struct terasic_de4led_softc *sc, int bit, int onoff) 57{ 58 59 TERASIC_DE4LED_LOCK(sc); 60 TERASIC_DE4LED_SETLED(sc, bit, onoff); 61 terasic_de4led_update(sc); 62 TERASIC_DE4LED_UNLOCK(sc); 63} 64 65static void 66led_0(void *arg, int onoff) 67{ 68 69 led_update(arg, 0, onoff); 70} 71 72static void 73led_1(void *arg, int onoff) 74{ 75 76 led_update(arg, 1, onoff); 77} 78 79static void 80led_2(void *arg, int onoff) 81{ 82 83 led_update(arg, 2, onoff); 84} 85 86static void 87led_3(void *arg, int onoff) 88{ 89 90 led_update(arg, 3, onoff); 91} 92 93static void 94led_4(void *arg, int onoff) 95{ 96 97 led_update(arg, 4, onoff); 98} 99 100static void 101led_5(void *arg, int onoff) 102{ 103 104 led_update(arg, 5, onoff); 105} 106 107static void 108led_6(void *arg, int onoff) 109{ 110 111 led_update(arg, 6, onoff); 112} 113 114static void 115led_7(void *arg, int onoff) 116{ 117 118 led_update(arg, 7, onoff); 119} 120 121void 122terasic_de4led_attach(struct terasic_de4led_softc *sc) 123{ 124 const char *cmd; 125 126 TERASIC_DE4LED_LOCK_INIT(sc); 127 128 /* 129 * Clear the LED array before we start. 130 */ 131 TERASIC_DE4LED_LOCK(sc); 132 TERASIC_DE4LED_CLEARBAR(sc); 133 terasic_de4led_update(sc); 134 TERASIC_DE4LED_UNLOCK(sc); 135 136 /* 137 * Register the LED array with led(4). 138 */ 139 sc->tdl_leds[0] = led_create(led_0, sc, "de4led_0"); 140 sc->tdl_leds[1] = led_create(led_1, sc, "de4led_1"); 141 sc->tdl_leds[2] = led_create(led_2, sc, "de4led_2"); 142 sc->tdl_leds[3] = led_create(led_3, sc, "de4led_3"); 143 sc->tdl_leds[4] = led_create(led_4, sc, "de4led_4"); 144 sc->tdl_leds[5] = led_create(led_5, sc, "de4led_5"); 145 sc->tdl_leds[6] = led_create(led_6, sc, "de4led_6"); 146 sc->tdl_leds[7] = led_create(led_7, sc, "de4led_7"); 147 148 if (resource_string_value(device_get_name(sc->tdl_dev), 149 sc->tdl_unit, "de4led_0_cmd", &cmd) == 0) 150 led_set("de4led_0", cmd); 151 if (resource_string_value(device_get_name(sc->tdl_dev), 152 sc->tdl_unit, "de4led_1_cmd", &cmd) == 0) 153 led_set("de4led_1", cmd); 154 if (resource_string_value(device_get_name(sc->tdl_dev), 155 sc->tdl_unit, "de4led_2_cmd", &cmd) == 0) 156 led_set("de4led_2", cmd); 157 if (resource_string_value(device_get_name(sc->tdl_dev), 158 sc->tdl_unit, "de4led_3_cmd", &cmd) == 0) 159 led_set("de4led_3", cmd); 160 if (resource_string_value(device_get_name(sc->tdl_dev), 161 sc->tdl_unit, "de4led_4_cmd", &cmd) == 0) 162 led_set("de4led_4", cmd); 163 if (resource_string_value(device_get_name(sc->tdl_dev), 164 sc->tdl_unit, "de4led_5_cmd", &cmd) == 0) 165 led_set("de4led_5", cmd); 166 if (resource_string_value(device_get_name(sc->tdl_dev), 167 sc->tdl_unit, "de4led_6_cmd", &cmd) == 0) 168 led_set("de4led_6", cmd); 169 if (resource_string_value(device_get_name(sc->tdl_dev), 170 sc->tdl_unit, "de4led_7_cmd", &cmd) == 0) 171 led_set("de4led_7", cmd); 172} 173 174void 175terasic_de4led_detach(struct terasic_de4led_softc *sc) 176{ 177 int i; 178 179 for (i = 0; i < 8; i++) { 180 led_destroy(sc->tdl_leds[i]); 181 sc->tdl_leds[i] = NULL; 182 } 183 TERASIC_DE4LED_LOCK(sc); 184 TERASIC_DE4LED_CLEARBAR(sc); 185 terasic_de4led_update(sc); 186 TERASIC_DE4LED_UNLOCK(sc); 187 TERASIC_DE4LED_LOCK_DESTROY(sc); 188} 189