af3dc4a7ca
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Sam Leffler. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Cambria Front Panel LED sitting on the I2C bus.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/led/led.h>
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#include "iicbus_if.h"
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#define IIC_M_WR 0 /* write operation */
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#define LED_ADDR 0xae /* slave address */
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struct fled_softc {
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struct cdev *sc_led;
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};
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static int
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fled_probe(device_t dev)
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{
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device_set_desc(dev, "Gateworks Cambria Front Panel LED");
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return 0;
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}
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static void
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fled_cb(void *arg, int onoff)
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{
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uint8_t data[1];
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struct iic_msg msgs[1] = {
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{ LED_ADDR, IIC_M_WR, 1, data },
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};
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device_t dev = arg;
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data[0] = (onoff == 0); /* NB: low true */
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(void) iicbus_transfer(dev, msgs, 1);
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}
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static int
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fled_attach(device_t dev)
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{
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struct fled_softc *sc = device_get_softc(dev);
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sc->sc_led = led_create(fled_cb, dev, "front");
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fled_cb(dev, 1); /* Turn on LED */
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return 0;
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}
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static int
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fled_detach(device_t dev)
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{
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struct fled_softc *sc = device_get_softc(dev);
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if (sc->sc_led != NULL)
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led_destroy(sc->sc_led);
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return 0;
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}
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static device_method_t fled_methods[] = {
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DEVMETHOD(device_probe, fled_probe),
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DEVMETHOD(device_attach, fled_attach),
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DEVMETHOD(device_detach, fled_detach),
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{0, 0},
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};
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static driver_t fled_driver = {
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"fled",
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fled_methods,
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sizeof(struct fled_softc),
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};
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static devclass_t fled_devclass;
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DRIVER_MODULE(fled, iicbus, fled_driver, fled_devclass, 0, 0);
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MODULE_VERSION(fled, 1);
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MODULE_DEPEND(fled, iicbus, 1, 1, 1);
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