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staging: comedi: pcl726: remove 'bipolar' from the private data 

These flags are set in the private data during the attach to indicate
if the range for each channel is bipolar or unipolar. Use the helper
function conedi_chan_range_is_bipolar() to determine this by checking
the range_table_list directly.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2013-09-25 15:35:26 -07:00 committed by Greg Kroah-Hartman
parent 4916211615
commit b4f58e1f68
1 changed files with 4 additions and 10 deletions
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14
drivers/staging/comedi/drivers/pcl726.c
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@ -183,8 +183,6 @@ static const struct pcl726_board boardtypes[] = {
};
struct pcl726_private {
int bipolar[12];
const struct comedi_lrange *rangelist[12];
unsigned int ao_readback[12];
};
@ -193,14 +191,15 @@ static int pcl726_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
struct pcl726_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int range = CR_RANGE(insn->chanspec);
int hi, lo;
int n;
int chan = CR_CHAN(insn->chanspec);
for (n = 0; n < insn->n; n++) {
lo = data[n] & 0xff;
hi = (data[n] >> 8) & 0xf;
if (devpriv->bipolar[chan])
if (comedi_chan_range_is_bipolar(s, chan, range))
hi ^= 0x8;
/*
* the programming info did not say which order
@ -279,10 +278,8 @@ static int pcl726_attach(struct comedi_device *dev, struct comedi_devconfig *it)
if (!devpriv)
return -ENOMEM;
for (i = 0; i < 12; i++) {
devpriv->bipolar[i] = 0;
for (i = 0; i < 12; i++)
devpriv->rangelist[i] = &range_unknown;
}
#ifdef ACL6126_IRQ
irq = 0;
@ -339,9 +336,6 @@ static int pcl726_attach(struct comedi_device *dev, struct comedi_devconfig *it)
j = 0;
}
devpriv->rangelist[i] = board->range_type_list[j];
if (devpriv->rangelist[i]->range[0].min ==
-devpriv->rangelist[i]->range[0].max)
devpriv->bipolar[i] = 1; /* bipolar range */
}
s = &dev->subdevices[1];