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Annotation of sys/dev/acpi/acpiac.c, Revision 1.1.1.1

1.1       nbrk        1: /* $OpenBSD: acpiac.c,v 1.18 2007/06/23 11:41:03 canacar Exp $ */
                      2: /*
                      3:  * Copyright (c) 2005 Marco Peereboom <marco@openbsd.org>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17:
                     18: #include <sys/param.h>
                     19: #include <sys/systm.h>
                     20: #include <sys/device.h>
                     21: #include <sys/malloc.h>
                     22:
                     23: #include <machine/bus.h>
                     24:
                     25: #include <dev/acpi/acpireg.h>
                     26: #include <dev/acpi/acpivar.h>
                     27: #include <dev/acpi/acpidev.h>
                     28: #include <dev/acpi/amltypes.h>
                     29: #include <dev/acpi/dsdt.h>
                     30:
                     31: #include <sys/sensors.h>
                     32:
                     33: int  acpiac_match(struct device *, void *, void *);
                     34: void acpiac_attach(struct device *, struct device *, void *);
                     35: int  acpiac_notify(struct aml_node *, int, void *);
                     36:
                     37: void acpiac_refresh(void *);
                     38: int acpiac_getsta(struct acpiac_softc *);
                     39:
                     40: struct cfattach acpiac_ca = {
                     41:        sizeof(struct acpiac_softc), acpiac_match, acpiac_attach
                     42: };
                     43:
                     44: struct cfdriver acpiac_cd = {
                     45:        NULL, "acpiac", DV_DULL
                     46: };
                     47:
                     48: int
                     49: acpiac_match(struct device *parent, void *match, void *aux)
                     50: {
                     51:        struct acpi_attach_args *aa = aux;
                     52:        struct cfdata *cf = match;
                     53:
                     54:        /* sanity */
                     55:        if (aa->aaa_name == NULL ||
                     56:            strcmp(aa->aaa_name, cf->cf_driver->cd_name) != 0 ||
                     57:            aa->aaa_table != NULL)
                     58:                return (0);
                     59:        return (1);
                     60: }
                     61:
                     62: void
                     63: acpiac_attach(struct device *parent, struct device *self, void *aux)
                     64: {
                     65:        struct acpiac_softc *sc = (struct acpiac_softc *)self;
                     66:        struct acpi_attach_args *aa = aux;
                     67:
                     68:        sc->sc_acpi = (struct acpi_softc *)parent;
                     69:        sc->sc_devnode = aa->aaa_node->child;
                     70:
                     71:        aml_register_notify(sc->sc_devnode->parent, aa->aaa_dev,
                     72:            acpiac_notify, sc, ACPIDEV_NOPOLL);
                     73:
                     74:        acpiac_getsta(sc);
                     75:        printf(": AC unit ");
                     76:        if (sc->sc_ac_stat == PSR_ONLINE)
                     77:                printf("online\n");
                     78:        else if (sc->sc_ac_stat == PSR_OFFLINE)
                     79:                printf("offline\n");
                     80:        else
                     81:                printf("in unknown state\n");
                     82:
                     83:        strlcpy(sc->sc_sensdev.xname, DEVNAME(sc),
                     84:            sizeof(sc->sc_sensdev.xname));
                     85:        strlcpy(sc->sc_sens[0].desc, "power supply",
                     86:            sizeof(sc->sc_sens[0].desc));
                     87:        sc->sc_sens[0].type = SENSOR_INDICATOR;
                     88:        sensor_attach(&sc->sc_sensdev, &sc->sc_sens[0]);
                     89:        sensordev_install(&sc->sc_sensdev);
                     90:        sc->sc_sens[0].value = sc->sc_ac_stat;
                     91: }
                     92:
                     93: void
                     94: acpiac_refresh(void *arg)
                     95: {
                     96:        struct acpiac_softc *sc = arg;
                     97:
                     98:        acpiac_getsta(sc);
                     99:        sc->sc_sens[0].value = sc->sc_ac_stat;
                    100: }
                    101:
                    102: int
                    103: acpiac_getsta(struct acpiac_softc *sc)
                    104: {
                    105:        struct aml_value res;
                    106:
                    107:        if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_STA", 0, NULL, NULL)) {
                    108:                dnprintf(10, "%s: no _STA\n",
                    109:                    DEVNAME(sc));
                    110:        }
                    111:
                    112:        if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PSR", 0, NULL, &res)) {
                    113:                dnprintf(10, "%s: no _PSR\n",
                    114:                    DEVNAME(sc));
                    115:                return (1);
                    116:        }
                    117:        sc->sc_ac_stat = aml_val2int(&res);
                    118:        aml_freevalue(&res);
                    119:        return (0);
                    120: }
                    121:
                    122: int
                    123: acpiac_notify(struct aml_node *node, int notify_type, void *arg)
                    124: {
                    125:        struct acpiac_softc *sc = arg;
                    126:
                    127:        dnprintf(10, "acpiac_notify: %.2x %s\n", notify_type,
                    128:            sc->sc_devnode->parent->name);
                    129:
                    130:        switch (notify_type) {
                    131:        case 0x00:
                    132:        case 0x81:
                    133:                /*
                    134:                 * XXX some sony vaio's use the wrong notify type
                    135:                 * work around it by honoring it as a 0x80
                    136:                 */
                    137:                /* FALLTHROUGH */
                    138:        case 0x80:
                    139:                acpiac_refresh(sc);
                    140:                dnprintf(10, "A/C status: %d\n", sc->sc_ac_stat);
                    141:                break;
                    142:        }
                    143:        return (0);
                    144: }