For multi-channel AI commands, the interrupt handler is missing code to
switch to the next channel. Add some (untested) code to handle this.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
unsigned int mask, timeout;
struct comedi_device *dev = d;
struct comedi_subdevice *s = dev->subdevices + 0;
unsigned int mask, timeout;
struct comedi_device *dev = d;
struct comedi_subdevice *s = dev->subdevices + 0;
+ unsigned int next_chan;
((inb(dev->iobase + PCL812_AD_HI) << 8) |
inb(dev->iobase + PCL812_AD_LO)) & mask);
((inb(dev->iobase + PCL812_AD_HI) << 8) |
inb(dev->iobase + PCL812_AD_LO)) & mask);
+ /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
+ next_chan = s->async->cur_chan + 1;
+ if (next_chan >= devpriv->ai_n_chan)
+ next_chan = 0;
+ if (devpriv->ai_chanlist[s->async->cur_chan] !=
+ devpriv->ai_chanlist[next_chan])
+ setup_range_channel(dev, s, devpriv->ai_chanlist[next_chan], 0);
+
outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
- s->async->cur_chan++;
- if (s->async->cur_chan >= devpriv->ai_n_chan) { /* one scan done */
- s->async->cur_chan = 0;
+ s->async->cur_chan = next_chan;
+ if (next_chan == 0) { /* one scan done */
devpriv->ai_act_scan++;
if (!(devpriv->ai_neverending))
if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */
devpriv->ai_act_scan++;
if (!(devpriv->ai_neverending))
if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */