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Annotation of sys/arch/macppc/dev/sysbutton.c, Revision 1.1

1.1     ! nbrk        1: /*
        !             2:  * Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org>
        !             3:  *
        !             4:  * Permission to use, copy, modify, and distribute this software for any
        !             5:  * purpose with or without fee is hereby granted, provided that the above
        !             6:  * copyright notice and this permission notice appear in all copies.
        !             7:  *
        !             8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !             9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            15:  */
        !            16:
        !            17: #include <sys/types.h>
        !            18: #include <sys/param.h>
        !            19: #include <sys/systm.h>
        !            20: #include <sys/proc.h>
        !            21: #include <sys/device.h>
        !            22:
        !            23: #include <ddb/db_var.h>
        !            24: #include <dev/ofw/openfirm.h>
        !            25:
        !            26: #include <machine/bus.h>
        !            27: #include <machine/autoconf.h>
        !            28:
        !            29: struct sysbutton_softc {
        !            30:        struct device   sc_dev;
        !            31:        int             sc_node;
        !            32:        int             sc_intr;
        !            33: };
        !            34:
        !            35: int sysbutton_match(struct device *, void *, void *);
        !            36: void sysbutton_attach(struct device *, struct device *, void *);
        !            37: int sysbutton_intr(void *);
        !            38:
        !            39: struct cfattach sysbutton_ca = {
        !            40:        sizeof(struct sysbutton_softc), sysbutton_match,
        !            41:        sysbutton_attach
        !            42: };
        !            43:
        !            44: struct cfdriver sysbutton_cd = {
        !            45:        NULL, "sysbutton", DV_DULL
        !            46: };
        !            47:
        !            48: int
        !            49: sysbutton_match(struct device *parent, void *arg, void *aux)
        !            50: {
        !            51:        struct confargs *ca = aux;
        !            52:
        !            53:        if (strcmp(ca->ca_name, "indicatorSwitch-gpio") == 0)
        !            54:                return 1;
        !            55:
        !            56:        return 0;
        !            57: }
        !            58:
        !            59: void
        !            60: sysbutton_attach(struct device *parent, struct device *self, void *aux)
        !            61: {
        !            62:        struct sysbutton_softc *sc = (struct sysbutton_softc *)self;
        !            63:        struct confargs *ca = aux;
        !            64:        int intr[2];
        !            65:
        !            66:        sc->sc_node = ca->ca_node;
        !            67:
        !            68:        OF_getprop(sc->sc_node, "interrupts", intr, sizeof(intr));
        !            69:        sc->sc_intr = intr[0];
        !            70:
        !            71:        printf(": irq %d\n", sc->sc_intr);
        !            72:
        !            73:        mac_intr_establish(parent, sc->sc_intr, IST_EDGE,
        !            74:            IPL_NONE, sysbutton_intr, sc, sc->sc_dev.dv_xname);
        !            75: }
        !            76:
        !            77: int
        !            78: sysbutton_intr(void *v)
        !            79: {
        !            80:
        !            81:        /*
        !            82:         * XXX: Holding this button causes an interrupt storm if
        !            83:         * ddb.console=0.
        !            84:         */
        !            85: #ifdef DDB
        !            86:        if (db_console)
        !            87:                Debugger();
        !            88: #endif
        !            89:
        !            90:        return 1;
        !            91: }