diff options
Diffstat (limited to 'sys/dev/terasic/de4led/terasic_de4led.c')
| -rw-r--r-- | sys/dev/terasic/de4led/terasic_de4led.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/sys/dev/terasic/de4led/terasic_de4led.c b/sys/dev/terasic/de4led/terasic_de4led.c new file mode 100644 index 0000000..1fb92d2 --- /dev/null +++ b/sys/dev/terasic/de4led/terasic_de4led.c @@ -0,0 +1,188 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/rman.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <dev/led/led.h> +#include <dev/terasic/de4led/terasic_de4led.h> + +static void +terasic_de4led_update(struct terasic_de4led_softc *sc) +{ + + TERASIC_DE4LED_LOCK_ASSERT(sc); + + bus_write_1(sc->tdl_res, TERASIC_DE4LED_OFF_LED, sc->tdl_bits); +} + +static void +led_update(struct terasic_de4led_softc *sc, int bit, int onoff) +{ + + TERASIC_DE4LED_LOCK(sc); + TERASIC_DE4LED_SETLED(sc, bit, onoff); + terasic_de4led_update(sc); + TERASIC_DE4LED_UNLOCK(sc); +} + +static void +led_0(void *arg, int onoff) +{ + + led_update(arg, 0, onoff); +} + +static void +led_1(void *arg, int onoff) +{ + + led_update(arg, 1, onoff); +} + +static void +led_2(void *arg, int onoff) +{ + + led_update(arg, 2, onoff); +} + +static void +led_3(void *arg, int onoff) +{ + + led_update(arg, 3, onoff); +} + +static void +led_4(void *arg, int onoff) +{ + + led_update(arg, 4, onoff); +} + +static void +led_5(void *arg, int onoff) +{ + + led_update(arg, 5, onoff); +} + +static void +led_6(void *arg, int onoff) +{ + + led_update(arg, 6, onoff); +} + +static void +led_7(void *arg, int onoff) +{ + + led_update(arg, 7, onoff); +} + +void +terasic_de4led_attach(struct terasic_de4led_softc *sc) +{ + const char *cmd; + + TERASIC_DE4LED_LOCK_INIT(sc); + + /* + * Clear the LED array before we start. + */ + TERASIC_DE4LED_LOCK(sc); + TERASIC_DE4LED_CLEARBAR(sc); + terasic_de4led_update(sc); + TERASIC_DE4LED_UNLOCK(sc); + + /* + * Register the LED array with led(4). + */ + sc->tdl_leds[0] = led_create(led_0, sc, "de4led_0"); + sc->tdl_leds[1] = led_create(led_1, sc, "de4led_1"); + sc->tdl_leds[2] = led_create(led_2, sc, "de4led_2"); + sc->tdl_leds[3] = led_create(led_3, sc, "de4led_3"); + sc->tdl_leds[4] = led_create(led_4, sc, "de4led_4"); + sc->tdl_leds[5] = led_create(led_5, sc, "de4led_5"); + sc->tdl_leds[6] = led_create(led_6, sc, "de4led_6"); + sc->tdl_leds[7] = led_create(led_7, sc, "de4led_7"); + + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_0_cmd", &cmd) == 0) + led_set("de4led_0", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_1_cmd", &cmd) == 0) + led_set("de4led_1", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_2_cmd", &cmd) == 0) + led_set("de4led_2", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_3_cmd", &cmd) == 0) + led_set("de4led_3", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_4_cmd", &cmd) == 0) + led_set("de4led_4", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_5_cmd", &cmd) == 0) + led_set("de4led_5", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_6_cmd", &cmd) == 0) + led_set("de4led_6", cmd); + if (resource_string_value(device_get_name(sc->tdl_dev), + sc->tdl_unit, "de4led_7_cmd", &cmd) == 0) + led_set("de4led_7", cmd); +} + +void +terasic_de4led_detach(struct terasic_de4led_softc *sc) +{ + int i; + + for (i = 0; i < 8; i++) { + led_destroy(sc->tdl_leds[i]); + sc->tdl_leds[i] = NULL; + } + TERASIC_DE4LED_LOCK(sc); + TERASIC_DE4LED_CLEARBAR(sc); + terasic_de4led_update(sc); + TERASIC_DE4LED_UNLOCK(sc); + TERASIC_DE4LED_LOCK_DESTROY(sc); +} |
