PITA_GPIN_SDA
u8 gp_outen = readb(card->cfg_base + PITA_GPOEN) & ~PITA_GPIN_SDA;
gp_out = readb(card->cfg_base + PITA_GPOUT) & ~PITA_GPIN_SDA;
gp_outen &= ~PITA_GPIN_SDA;
gp_outen |= PITA_GPIN_SDA;
return (readb(card->cfg_base + PITA_GPIN) & PITA_GPIN_SDA) ? 1 : 0;