1186011Ssam/*- 2186011Ssam * Copyright (c) 2008 Sam Leffler. All rights reserved. 3186011Ssam * 4186011Ssam * Redistribution and use in source and binary forms, with or without 5186011Ssam * modification, are permitted provided that the following conditions 6186011Ssam * are met: 7186011Ssam * 1. Redistributions of source code must retain the above copyright 8186011Ssam * notice, this list of conditions and the following disclaimer. 9186011Ssam * 2. Redistributions in binary form must reproduce the above copyright 10186011Ssam * notice, this list of conditions and the following disclaimer in the 11186011Ssam * documentation and/or other materials provided with the distribution. 12186011Ssam * 13186011Ssam * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14186011Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15186011Ssam * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16186011Ssam * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17186011Ssam * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18186011Ssam * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19186011Ssam * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20186011Ssam * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21186011Ssam * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22186011Ssam * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23186011Ssam */ 24186011Ssam 25186011Ssam#include <sys/cdefs.h> 26186011Ssam__FBSDID("$FreeBSD: releng/11.0/sys/arm/xscale/ixp425/cambria_fled.c 205705 2010-03-26 18:49:43Z rpaulo $"); 27186011Ssam/* 28186011Ssam * Cambria Front Panel LED sitting on the I2C bus. 29186011Ssam */ 30186011Ssam#include <sys/param.h> 31186011Ssam#include <sys/systm.h> 32186011Ssam#include <sys/kernel.h> 33186011Ssam#include <sys/module.h> 34186011Ssam#include <sys/bus.h> 35186011Ssam 36186011Ssam#include <machine/bus.h> 37186011Ssam 38186011Ssam#include <dev/iicbus/iiconf.h> 39186011Ssam#include <dev/led/led.h> 40186011Ssam 41186011Ssam#include "iicbus_if.h" 42186011Ssam 43186011Ssam#define IIC_M_WR 0 /* write operation */ 44186011Ssam#define LED_ADDR 0xae /* slave address */ 45186011Ssam 46186011Ssamstruct fled_softc { 47186011Ssam struct cdev *sc_led; 48186011Ssam}; 49186011Ssam 50186011Ssamstatic int 51186011Ssamfled_probe(device_t dev) 52186011Ssam{ 53186011Ssam device_set_desc(dev, "Gateworks Cambria Front Panel LED"); 54186011Ssam return 0; 55186011Ssam} 56186011Ssam 57186011Ssamstatic void 58186011Ssamfled_cb(void *arg, int onoff) 59186011Ssam{ 60186011Ssam uint8_t data[1]; 61186011Ssam struct iic_msg msgs[1] = { 62186011Ssam { LED_ADDR, IIC_M_WR, 1, data }, 63186011Ssam }; 64186011Ssam device_t dev = arg; 65186011Ssam 66186011Ssam data[0] = (onoff == 0); /* NB: low true */ 67186011Ssam (void) iicbus_transfer(dev, msgs, 1); 68186011Ssam} 69186011Ssam 70186011Ssamstatic int 71186011Ssamfled_attach(device_t dev) 72186011Ssam{ 73186011Ssam struct fled_softc *sc = device_get_softc(dev); 74186011Ssam 75186011Ssam sc->sc_led = led_create(fled_cb, dev, "front"); 76186011Ssam 77205705Srpaulo fled_cb(dev, 1); /* Turn on LED */ 78203752Srpaulo 79186011Ssam return 0; 80186011Ssam} 81186011Ssam 82186011Ssamstatic int 83186011Ssamfled_detach(device_t dev) 84186011Ssam{ 85186011Ssam struct fled_softc *sc = device_get_softc(dev); 86186011Ssam 87186011Ssam if (sc->sc_led != NULL) 88186011Ssam led_destroy(sc->sc_led); 89186011Ssam 90186011Ssam return 0; 91186011Ssam} 92186011Ssam 93186011Ssamstatic device_method_t fled_methods[] = { 94186011Ssam DEVMETHOD(device_probe, fled_probe), 95186011Ssam DEVMETHOD(device_attach, fled_attach), 96186011Ssam DEVMETHOD(device_detach, fled_detach), 97186011Ssam 98186011Ssam {0, 0}, 99186011Ssam}; 100186011Ssam 101186011Ssamstatic driver_t fled_driver = { 102186011Ssam "fled", 103186011Ssam fled_methods, 104186011Ssam sizeof(struct fled_softc), 105186011Ssam}; 106186011Ssamstatic devclass_t fled_devclass; 107186011Ssam 108186011SsamDRIVER_MODULE(fled, iicbus, fled_driver, fled_devclass, 0, 0); 109186011SsamMODULE_VERSION(fled, 1); 110186011SsamMODULE_DEPEND(fled, iicbus, 1, 1, 1); 111