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staging: comedi: amplc_dio200: add 32-bit register access functions

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These are currently unused but will be used to support extra features of
the PCIe boards.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2012-10-24 16:48:10 +01:00 committed by Greg Kroah-Hartman
parent 025d1f675c
commit 87276012ea
1 changed files with 32 additions and 0 deletions
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32
drivers/staging/comedi/drivers/amplc_dio200.c
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@ -679,6 +679,38 @@ static void dio200_write8(struct comedi_device *dev, unsigned int offset,
writeb(val, devpriv->io.u.membase + offset);
}
/*
* Read 32-bit register.
*/
static unsigned int dio200_read32(struct comedi_device *dev,
unsigned int offset)
{
const struct dio200_board *thisboard = comedi_board(dev);
struct dio200_private *devpriv = dev->private;
offset <<= thisboard->mainshift;
if (devpriv->io.regtype == io_regtype)
return inl(devpriv->io.u.iobase + offset);
else
return readl(devpriv->io.u.membase + offset);
}
/*
* Write 32-bit register.
*/
static void dio200_write32(struct comedi_device *dev, unsigned int offset,
unsigned int val)
{
const struct dio200_board *thisboard = comedi_board(dev);
struct dio200_private *devpriv = dev->private;
offset <<= thisboard->mainshift;
if (devpriv->io.regtype == io_regtype)
outl(val, devpriv->io.u.iobase + offset);
else
writel(val, devpriv->io.u.membase + offset);
}
/*
* This function looks for a board matching the supplied PCI device.
*/