Commit 551739b0 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: das16: use comedi_subdevice 'readback' 



Use the new comedi_subdevice 'readback' member and the core provided
(*insn_read) for the readback of the analog output subdevice channels.

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 80024255

drivers/staging/comedi/drivers/das16.c

+9 −2
Original line number Diff line number Diff line
@@ -927,11 +927,13 @@ static int das16_ao_insn_write(struct comedi_device *dev, 
			       unsigned int *data)

{

	unsigned int chan = CR_CHAN(insn->chanspec);

	unsigned int val;

	int i;



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

		val = data[i];

		unsigned int val = data[i];



		s->readback[chan] = val;



		val <<= 4;



		outb(val & 0xff, dev->iobase + DAS16_AO_LSB_REG(chan));
@@ -1163,6 +1165,11 @@ static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it) 
		s->maxdata	= 0x0fff;

		s->range_table	= devpriv->user_ao_range_table;

		s->insn_write	= das16_ao_insn_write;

		s->insn_read	= comedi_readback_insn_read;



		ret = comedi_alloc_subdev_readback(s);

		if (ret)

			return ret;

	} else {

		s->type		= COMEDI_SUBD_UNUSED;

	}