Annotation of sys/dev/onewire/owid.c, Revision 1.1
1.1 ! nbrk 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: }
CVSweb