2 * Copyright (c) 2008 Sam Leffler. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 #include <sys/cdefs.h>
26 __FBSDID("$FreeBSD$");
28 * Cambria Front Panel LED sitting on the I2C bus.
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
36 #include <machine/bus.h>
38 #include <dev/iicbus/iiconf.h>
39 #include <dev/led/led.h>
41 #include "iicbus_if.h"
43 #define IIC_M_WR 0 /* write operation */
44 #define LED_ADDR 0xae /* slave address */
51 fled_probe(device_t dev)
53 device_set_desc(dev, "Gateworks Cambria Front Panel LED");
58 fled_cb(void *arg, int onoff)
61 struct iic_msg msgs[1] = {
62 { LED_ADDR, IIC_M_WR, 1, data },
66 data[0] = (onoff == 0); /* NB: low true */
67 (void) iicbus_transfer(dev, msgs, 1);
71 fled_attach(device_t dev)
73 struct fled_softc *sc = device_get_softc(dev);
75 sc->sc_led = led_create(fled_cb, dev, "front");
77 fled_cb(dev, 1); /* Turn on LED */
83 fled_detach(device_t dev)
85 struct fled_softc *sc = device_get_softc(dev);
87 if (sc->sc_led != NULL)
88 led_destroy(sc->sc_led);
93 static device_method_t fled_methods[] = {
94 DEVMETHOD(device_probe, fled_probe),
95 DEVMETHOD(device_attach, fled_attach),
96 DEVMETHOD(device_detach, fled_detach),
101 static driver_t fled_driver = {
104 sizeof(struct fled_softc),
106 static devclass_t fled_devclass;
108 DRIVER_MODULE(fled, iicbus, fled_driver, fled_devclass, 0, 0);
109 MODULE_VERSION(fled, 1);
110 MODULE_DEPEND(fled, iicbus, 1, 1, 1);