2 * Copyright (c) 2012 Robert N. M. Watson
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.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
33 #ifndef _DEV_TERASIC_DE4LED_H_
34 #define _DEV_TERASIC_DE4LED_H_
36 #define TERASIC_DE4LED_NUMLEDS 8
37 struct terasic_de4led_softc {
40 struct resource *tdl_res;
44 struct cdev *tdl_leds[TERASIC_DE4LED_NUMLEDS];
47 #define TERASIC_DE4LED_LOCK(sc) mtx_lock(&(sc)->tdl_lock)
48 #define TERASIC_DE4LED_LOCK_ASSERT(sc) mtx_assert(&(sc)->tdl_lock, MA_OWNED)
49 #define TERASIC_DE4LED_LOCK_DESTROY(sc) mtx_destroy(&(sc)->tdl_lock)
50 #define TERASIC_DE4LED_LOCK_INIT(sc) mtx_init(&(sc)->tdl_lock, \
51 "terasic_de4led", NULL, MTX_DEF)
52 #define TERASIC_DE4LED_UNLOCK(sc) mtx_unlock(&(sc)->tdl_lock)
55 * Setting and clearing LEDs. tdl_bits is in the bit order preferred for I/O.
56 * The LED elements are labelled 1..8 on the DE-4, so bit 0 is LED 1, and so
59 #define TERASIC_DE4LED_CLEARBAR(sc) do { \
62 #define TERASIC_DE4LED_SETLED(sc, led, onoff) do { \
63 (sc)->tdl_bits &= ~(1 << (led)); \
64 (sc)->tdl_bits |= ((onoff != 0) ? 1 : 0) << (led); \
68 * Only one offset matters for this device -- 0.
70 #define TERASIC_DE4LED_OFF_LED 0
72 void terasic_de4led_attach(struct terasic_de4led_softc *sc);
73 void terasic_de4led_detach(struct terasic_de4led_softc *sc);
75 extern devclass_t terasic_de4led_devclass;
77 #endif /* _DEV_TERASIC_DE4LED_H_ */