REG_CBUS_INT_0
REG_CBUS_INT_0, 0xff,
u8 stat = sii8620_readb(ctx, REG_CBUS_INT_0);
sii8620_write(ctx, REG_CBUS_INT_0, stat & ~BIT_CBUS_HPD_CHG);
sii8620_write(ctx, REG_CBUS_INT_0, BIT_CBUS_HPD_CHG);