void
mcclock_mace_attach(struct device *parent, struct device *self, void *aux)
{
struct mcclock_mace_softc *sc = (void *)self;
struct mace_attach_args *maa = aux;
sc->sc_st = maa->maa_st;
/* XXX should be bus_space_map() */
if (bus_space_subregion(maa->maa_st, maa->maa_sh,
maa->maa_offset, 0, &sc->sc_sh))
panic("mcclock_mace_attach: couldn't map");
/*
* We want a fixed format: 24-hour, BCD data, so just force the
* RTC to this mode; if there was junk there we'll be able to
* fix things up later when we discover the time read back is
* no good.
*/
ds1687_write(sc, DS1687_CONTROLA, DS1687_DV1 | DS1687_BANK1);
ds1687_write(sc, DS1687_CONTROLB, DS1687_24HRS);
/* XXXrkb: init kickstart/wakeup stuff */
if (!(ds1687_read(sc, DS1687_CONTROLD) & DS1687_VRT))
printf(": lithium cell is dead, RTC unreliable");
printf("\n");
clockattach(&sc->sc_dev, &mcclock_mace_clockfns);
}
void
mcclock_poweroff(void)
{
uint8_t a, xctl_a, xctl_b;
if (mace0 == NULL)
return;
(void)splhigh();
a = ds1687_read(mace0, DS1687_CONTROLA);
a &= ~DS1687_DV2;
a |= DS1687_DV1;
ds1687_write(mace0, DS1687_CONTROLA, a | DS1687_BANK1);
wbflush();
xctl_b = ds1687_read(mace0, DS1687_BANK1_XCTRL4B);
xctl_b |= DS1687_X4B_ABE | DS1687_X4B_KIE;
ds1687_write(mace0, DS1687_BANK1_XCTRL4B, xctl_b);
xctl_a = ds1687_read(mace0, DS1687_BANK1_XCTRL4A);
xctl_a &= ~(DS1687_X4A_RCF | DS1687_X4A_WAF | DS1687_X4A_KF);
ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a);
wbflush();
/* and down we go */
ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a | DS1687_X4A_PAB);
ds1687_write(mace0, DS1687_CONTROLA, a);
wbflush();
for (;;)
;
}