#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/bus.h>

#include <alpha/alpha/mcpcfiicvar.h>
#include <dev/i2c/i2cvar.h>
#include <dev/ic/pcf8584var.h>
#include <dev/isa/isavar.h>

struct mcpcfiic_isa_softc {
        struct pcfiic_softc     sc_pcfiic;

        bus_space_tag_t         sc_iot;
        bus_space_handle_t      sc_ioh;
};

int     mcpcfiic_isa_match(struct device *, void *, void *);
void    mcpcfiic_isa_attach(struct device *, struct device *, void *);

struct cfattach mcpcfiic_isa_ca = {
        sizeof (struct mcpcfiic_isa_softc), mcpcfiic_isa_match,
            mcpcfiic_isa_attach,
};

int
mcpcfiic_isa_match(parent, match, aux)
        struct device *parent;
        void *match;
        void *aux;
{
        struct isa_attach_args *ia = aux;
        bus_space_handle_t ioh;

        if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != 0xe0000) ||
            ia->ia_maddr != MADDRUNK || ia->ia_msize != 0 ||
            ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
                return (0);

        if (bus_space_map(ia->ia_iot, 0xe0000, 0x2, 0, &ioh))
                return (0);

        bus_space_unmap(ia->ia_iot, ioh, 0x2);

        ia->ia_iobase = 0xe0000;
        ia->ia_iosize = 0x2;

        return (1);
}

void
mcpcfiic_isa_attach(parent, self, aux)
        struct device *parent, *self;
        void *aux;
{
        struct isa_attach_args *ia = aux;
        struct mcpcfiic_isa_softc *sc = (struct mcpcfiic_isa_softc *)self;
        struct pcfiic_softc *psc = &sc->sc_pcfiic;

        sc->sc_iot = ia->ia_iot;
        if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
            &sc->sc_ioh))
                panic("mcpcfiic_isa_attach: couldn't map clock I/O space");

        pcfiic_attach(psc, (i2c_addr_t)ia->ia_iobase, PCF_CLOCK_8, 0,
            0, NULL);
}