For aesthetics, tidy this function up and use the register defines
to remove the magic numbers.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/adv_pci1723.c | 21 ++++++---------------
1 file changed, 6 insertions(+), 15 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adv_pci1723.c
b/drivers/staging/comedi/drivers/adv_pci1723.c
index a03f4bc..53f2b21 100644
--- a/drivers/staging/comedi/drivers/adv_pci1723.c
+++ b/drivers/staging/comedi/drivers/adv_pci1723.c
@@ -103,33 +103,24 @@ static int pci1723_ao_insn_write(struct comedi_device
*dev,
return insn->n;
}
-/*
- digital i/o config/query
-*/
static int pci1723_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)
{
unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned int mask;
- unsigned short mode;
+ unsigned int mask = (chan < 8) ? 0x00ff : 0xff00;
+ unsigned short mode = 0x0000; /* assume output */
int ret;
- if (chan < 8)
- mask = 0x00ff;
- else
- mask = 0xff00;
-
ret = comedi_dio_insn_config(dev, s, insn, data, mask);
if (ret)
return ret;
- /* update hardware DIO mode */
- mode = 0x0000; /* assume output */
if (!(s->io_bits & 0x00ff))
- mode |= 0x0001; /* low byte input */
+ mode |= PCI1723_DIO_CTRL_LDIO; /* low byte input */
if (!(s->io_bits & 0xff00))
- mode |= 0x0002; /* high byte input */
+ mode |= PCI1723_DIO_CTRL_HDIO; /* high byte input */
outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
return insn->n;
--
2.0.3
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