1 /*- 2 * Copyright (c) 1998, 2001 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/lock.h> 34 #include <sys/module.h> 35 #include <sys/mutex.h> 36 #include <sys/bus.h> 37 38 #include <dev/smbus/smbconf.h> 39 #include <dev/smbus/smbus.h> 40 41 /* 42 * Autoconfiguration and support routines for System Management bus 43 */ 44 45 /* 46 * Device methods 47 */ 48 static int smbus_probe(device_t); 49 static int smbus_attach(device_t); 50 static int smbus_detach(device_t); 51 52 static device_method_t smbus_methods[] = { 53 /* device interface */ 54 DEVMETHOD(device_probe, smbus_probe), 55 DEVMETHOD(device_attach, smbus_attach), 56 DEVMETHOD(device_detach, smbus_detach), 57 58 /* bus interface */ 59 DEVMETHOD(bus_add_child, bus_generic_add_child), 60 61 DEVMETHOD_END 62 }; 63 64 driver_t smbus_driver = { 65 "smbus", 66 smbus_methods, 67 sizeof(struct smbus_softc), 68 }; 69 70 devclass_t smbus_devclass; 71 72 /* 73 * At 'probe' time, we add all the devices which we know about to the 74 * bus. The generic attach routine will probe and attach them if they 75 * are alive. 76 */ 77 static int 78 smbus_probe(device_t dev) 79 { 80 81 device_set_desc(dev, "System Management Bus"); 82 83 return (0); 84 } 85 86 static int 87 smbus_attach(device_t dev) 88 { 89 struct smbus_softc *sc = device_get_softc(dev); 90 91 mtx_init(&sc->lock, device_get_nameunit(dev), "smbus", MTX_DEF); 92 bus_generic_probe(dev); 93 bus_generic_attach(dev); 94 95 return (0); 96 } 97 98 static int 99 smbus_detach(device_t dev) 100 { 101 struct smbus_softc *sc = device_get_softc(dev); 102 int error; 103 104 error = bus_generic_detach(dev); 105 if (error) 106 return (error); 107 mtx_destroy(&sc->lock); 108 109 return (0); 110 } 111 112 void 113 smbus_generic_intr(device_t dev, u_char devaddr, char low, char high, int err) 114 { 115 } 116 117 MODULE_VERSION(smbus, SMBUS_MODVER); 118