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staging: comedi: addi_apci_3120: set scan length/start after programming chanlist

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The APCI-3120 documentation says that the PR/PA bits should be set after the
chanlist sequence is programmed.

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 2014-11-04 10:54:55 -07:00 • committed by Greg Kroah-Hartman
commit 1022f64e75
1 changed files with 4 additions and 4 deletions
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8
drivers/staging/comedi/drivers/addi_apci_3120.c
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@ -286,10 +286,6 @@ static void apci3120_set_chanlist(struct comedi_device *dev,
struct apci3120_private *devpriv = dev->private;
int i;
/* set scan length (PR) and scan start (PA) */
devpriv->ctrl = APCI3120_CTRL_PR(n_chan - 1) | APCI3120_CTRL_PA(0);
outw(devpriv->ctrl, dev->iobase + APCI3120_CTRL_REG);
/* set chanlist for scan */
for (i = 0; i < n_chan; i++) {
unsigned int chan = CR_CHAN(chanlist[i]);
@ -307,6 +303,10 @@ static void apci3120_set_chanlist(struct comedi_device *dev,
}
apci3120_ai_reset_fifo(dev);
/* set scan length (PR) and scan start (PA) */
devpriv->ctrl = APCI3120_CTRL_PR(n_chan - 1) | APCI3120_CTRL_PA(0);
outw(devpriv->ctrl, dev->iobase + APCI3120_CTRL_REG);
}
#include "addi-data/hwdrv_apci3120.c"