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Commit 1e66bb25 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: pcl812: introduce pcl812_ai_soft_trig() 



Introduce a helper function to start a software triggered analog input
conversion.

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 939d33d6

drivers/staging/comedi/drivers/pcl812.c

+7 −2
Original line number Diff line number Diff line
@@ -643,6 +643,12 @@ static void pcl812_ai_clear_eoc(struct comedi_device *dev) 
	outb(0, dev->iobase + PCL812_CLRINT);

}



static void pcl812_ai_soft_trig(struct comedi_device *dev)

{

	/* writing any value triggers a software conversion */

	outb(255, dev->iobase + PCL812_SOFTTRIG);

}



static unsigned int pcl812_ai_get_sample(struct comedi_device *dev,

					 struct comedi_subdevice *s)

{
@@ -1028,8 +1034,7 @@ static int pcl812_ai_insn_read(struct comedi_device *dev, 


	for (i = 0; i < insn->n; i++) {

		pcl812_ai_clear_eoc(dev);

		/* start conversion */

		outb(255, dev->iobase + PCL812_SOFTTRIG);

		pcl812_ai_soft_trig(dev);



		ret = comedi_timeout(dev, s, insn, pcl812_ai_eoc, 0);

		if (ret)