Commit 23d4f024 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: quatech_daqp_cs: there are 4 digital outputs 



This board has 4 digital outputs not 1. Fix the subdevice init.

The digital output lines are used for the external channel selection
when the expansion mode is enabled. Add a comment about this.

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 647d8aec

drivers/staging/comedi/drivers/quatech_daqp_cs.c

+8 −1
Original line number Diff line number Diff line
@@ -748,10 +748,17 @@ static int daqp_auto_attach(struct comedi_device *dev, 
	s->maxdata	= 1;

	s->insn_bits	= daqp_di_insn_bits;



	/*

	 * Digital Output subdevice

	 * NOTE: The digital output lines share the same pins on the

	 * interface connector as the four external channel selection

	 * bits. If expansion mode is used the digital outputs do not

	 * work.

	 */

	s = &dev->subdevices[3];

	s->type		= COMEDI_SUBD_DO;

	s->subdev_flags	= SDF_WRITABLE;

	s->n_chan	= 1;

	s->n_chan	= 4;

	s->maxdata	= 1;

	s->insn_bits	= daqp_do_insn_bits;