Commit 1022f64e authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

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



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

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 15e920fb

drivers/staging/comedi/drivers/addi_apci_3120.c

+4 −4
Original line number Diff line number Diff line
@@ -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"