static int dio200_subdev_intr_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct dio200_subdev_intr *subpriv = s->private;
unsigned long flags;
spin_lock_irqsave(&subpriv->spinlock, flags);
if (subpriv->active)
dio200_stop_intr(dev, s);
spin_unlock_irqrestore(&subpriv->spinlock, flags);
return 0;
}
static void dio200_read_scan_intr(struct comedi_device *dev,
struct comedi_subdevice *s,
unsigned int triggered)
{
struct dio200_subdev_intr *subpriv = s->private;
struct comedi_cmd *cmd = &s->async->cmd;
unsigned short val;
unsigned int n, ch;
val = 0;
for (n = 0; n < cmd->chanlist_len; n++) {
ch = CR_CHAN(cmd->chanlist[n]);
if (triggered & (1U << ch))
val |= (1U << n);
}
/* Write the scan to the buffer. */
if (comedi_buf_put(s, val)) {
s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS);
} else {
/* Error! Stop acquisition. */
dio200_stop_intr(dev, s);
s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW;
dev_err(dev->class_dev, "buffer overflow\n");
}
/* Check for end of acquisition. */
if (cmd->stop_src == TRIG_COUNT) {
if (subpriv->stopcount > 0) {
subpriv->stopcount--;
if (subpriv->stopcount == 0) {
s->async->events |= COMEDI_CB_EOA;
dio200_stop_intr(dev, s);
}
}
}
}