dev/onewire/owid.c

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This source file includes following definitions.
owid_match
owid_attach
owid_detach
owid_activate
    1 /*      $OpenBSD: owid.c,v 1.5 2007/06/01 21:30:31 cnst Exp $   */
    2 
    3 /*
    4  * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
    5  *
    6  * Permission to use, copy, modify, and distribute this software for any
    7  * purpose with or without fee is hereby granted, provided that the above
    8  * copyright notice and this permission notice appear in all copies.
    9  *
   10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   17  */
   18 
   19 /*
   20  * 1-Wire ID family type device driver.
   21  */
   22 
   23 #include <sys/param.h>
   24 #include <sys/systm.h>
   25 #include <sys/device.h>
   26 #include <sys/kernel.h>
   27 #include <sys/proc.h>
   28 #include <sys/sensors.h>
   29 
   30 #include <dev/onewire/onewiredevs.h>
   31 #include <dev/onewire/onewirereg.h>
   32 #include <dev/onewire/onewirevar.h>
   33 
   34 struct owid_softc {
   35         struct device           sc_dev;
   36 
   37         void *                  sc_onewire;
   38         u_int64_t               sc_rom;
   39 
   40         struct ksensor          sc_sensor;
   41         struct ksensordev       sc_sensordev;
   42 
   43         int                     sc_dying;
   44 };
   45 
   46 int     owid_match(struct device *, void *, void *);
   47 void    owid_attach(struct device *, struct device *, void *);
   48 int     owid_detach(struct device *, int);
   49 int     owid_activate(struct device *, enum devact);
   50 
   51 struct cfattach owid_ca = {
   52         sizeof(struct owid_softc),
   53         owid_match,
   54         owid_attach,
   55         owid_detach,
   56         owid_activate
   57 };
   58 
   59 struct cfdriver owid_cd = {
   60         NULL, "owid", DV_DULL
   61 };
   62 
   63 static const struct onewire_matchfam owid_fams[] = {
   64         { ONEWIRE_FAMILY_DS1990 }
   65 };
   66 
   67 int
   68 owid_match(struct device *parent, void *match, void *aux)
   69 {
   70         return (onewire_matchbyfam(aux, owid_fams,
   71             sizeof(owid_fams) /sizeof(owid_fams[0])));
   72 }
   73 
   74 void
   75 owid_attach(struct device *parent, struct device *self, void *aux)
   76 {
   77         struct owid_softc *sc = (struct owid_softc *)self;
   78         struct onewire_attach_args *oa = aux;
   79 
   80         sc->sc_onewire = oa->oa_onewire;
   81         sc->sc_rom = oa->oa_rom;
   82 
   83         /* Initialize sensor */
   84         strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
   85             sizeof(sc->sc_sensordev.xname));
   86         sc->sc_sensor.type = SENSOR_INTEGER;
   87         sc->sc_sensor.value = ONEWIRE_ROM_SN(sc->sc_rom);
   88         sensor_attach(&sc->sc_sensordev, &sc->sc_sensor);
   89         sensordev_install(&sc->sc_sensordev);
   90 
   91         printf("\n");
   92 }
   93 
   94 int
   95 owid_detach(struct device *self, int flags)
   96 {
   97         struct owid_softc *sc = (struct owid_softc *)self;
   98 
   99         sensordev_deinstall(&sc->sc_sensordev);
  100 
  101         return (0);
  102 }
  103 
  104 int
  105 owid_activate(struct device *self, enum devact act)
  106 {
  107         struct owid_softc *sc = (struct owid_softc *)self;
  108 
  109         switch (act) {
  110         case DVACT_ACTIVATE:
  111                 break;
  112         case DVACT_DEACTIVATE:
  113                 sc->sc_dying = 1;
  114                 break;
  115         }
  116 
  117         return (0);
  118 }
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root/dev/onewire/owid.c

DEFINITIONS
