TSI721_INT_IMSG_CHAN
iowrite32(rval | TSI721_INT_IMSG_CHAN(ch),
rval &= ~TSI721_INT_IMSG_CHAN(ch);
ch_inte |= TSI721_INT_IMSG_CHAN(ch);
if (!(dev_ch_int & TSI721_INT_IMSG_CHAN(ch)))