718cf2ccb9
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.
158 lines
4.1 KiB
C
158 lines
4.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/gpio.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <dev/gpio/gpiobusvar.h>
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#include <dev/led/led.h>
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#include "gpiobus_if.h"
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/*
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* Only one pin for led
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*/
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#define GPIOLED_PIN 0
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#define GPIOLED_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
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#define GPIOLED_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
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#define GPIOLED_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \
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device_get_nameunit((_sc)->sc_dev), "gpioled", MTX_DEF)
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#define GPIOLED_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
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struct gpioled_softc
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{
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device_t sc_dev;
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device_t sc_busdev;
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struct mtx sc_mtx;
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struct cdev *sc_leddev;
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int sc_invert;
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};
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static void gpioled_control(void *, int);
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static int gpioled_probe(device_t);
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static int gpioled_attach(device_t);
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static int gpioled_detach(device_t);
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static void
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gpioled_control(void *priv, int onoff)
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{
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struct gpioled_softc *sc;
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sc = (struct gpioled_softc *)priv;
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GPIOLED_LOCK(sc);
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if (GPIOBUS_PIN_SETFLAGS(sc->sc_busdev, sc->sc_dev, GPIOLED_PIN,
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GPIO_PIN_OUTPUT) == 0) {
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if (sc->sc_invert)
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onoff = !onoff;
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GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, GPIOLED_PIN,
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onoff ? GPIO_PIN_HIGH : GPIO_PIN_LOW);
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}
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GPIOLED_UNLOCK(sc);
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}
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static int
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gpioled_probe(device_t dev)
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{
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device_set_desc(dev, "GPIO led");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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gpioled_attach(device_t dev)
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{
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struct gpioled_softc *sc;
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int state;
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const char *name;
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sc = device_get_softc(dev);
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sc->sc_dev = dev;
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sc->sc_busdev = device_get_parent(dev);
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GPIOLED_LOCK_INIT(sc);
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state = 0;
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if (resource_string_value(device_get_name(dev),
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device_get_unit(dev), "name", &name))
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name = NULL;
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resource_int_value(device_get_name(dev),
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device_get_unit(dev), "invert", &sc->sc_invert);
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sc->sc_leddev = led_create_state(gpioled_control, sc, name ? name :
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device_get_nameunit(dev), state);
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return (0);
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}
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static int
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gpioled_detach(device_t dev)
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{
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struct gpioled_softc *sc;
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sc = device_get_softc(dev);
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if (sc->sc_leddev) {
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led_destroy(sc->sc_leddev);
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sc->sc_leddev = NULL;
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}
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GPIOLED_LOCK_DESTROY(sc);
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return (0);
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}
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static devclass_t gpioled_devclass;
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static device_method_t gpioled_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, gpioled_probe),
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DEVMETHOD(device_attach, gpioled_attach),
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DEVMETHOD(device_detach, gpioled_detach),
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DEVMETHOD_END
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};
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static driver_t gpioled_driver = {
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"gpioled",
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gpioled_methods,
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sizeof(struct gpioled_softc),
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};
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DRIVER_MODULE(gpioled, gpiobus, gpioled_driver, gpioled_devclass, 0, 0);
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MODULE_DEPEND(gpioled, gpiobus, 1, 1, 1);
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