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staging: comedi: dt2817: fix dt2817_dio_insn_config() 

This is the (*insn_config) function for a DIO subdevice. It should be
using the data[0] value as the "instruction" to perform on the subdevice.

Use the comedi_dio_insn_config() helper to properly handle instructions.

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 2013-08-26 15:28:32 -07:00 committed by Greg Kroah-Hartman
parent dcdf1d0323
commit c7fe22f6f6
1 changed files with 14 additions and 16 deletions
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30
drivers/staging/comedi/drivers/dt2817.c
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@ -43,28 +43,26 @@ Configuration options:
static int dt2817_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
struct comedi_insn *insn,
unsigned int *data)
{
int mask;
int chan;
int oe = 0;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int oe = 0;
unsigned int mask;
int ret;
if (insn->n != 1)
return -EINVAL;
chan = CR_CHAN(insn->chanspec);
if (chan < 8)
mask = 0xff;
mask = 0x000000ff;
else if (chan < 16)
mask = 0xff00;
mask = 0x0000ff00;
else if (chan < 24)
mask = 0xff0000;
mask = 0x00ff0000;
else
mask = 0xff000000;
if (data[0])
s->io_bits |= mask;
else
s->io_bits &= ~mask;
ret = comedi_dio_insn_config(dev, s, insn, data, mask);
if (ret)
return ret;
if (s->io_bits & 0x000000ff)
oe |= 0x1;
@ -77,7 +75,7 @@ static int dt2817_dio_insn_config(struct comedi_device *dev,
outb(oe, dev->iobase + DT2817_CR);
return 1;
return insn->n;
}
static int dt2817_dio_insn_bits(struct comedi_device *dev,