Commit 1fe6a03a authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: das6402: add (*do_cmd) for AI async commands 



Flesh out the (*do_cmd) function to support timed analog input
acquisitions.

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 d1d24cb6

drivers/staging/comedi/drivers/das6402.c

+19 −1
Original line number Diff line number Diff line
@@ -256,7 +256,25 @@ static void das6402_ai_set_mode(struct comedi_device *dev, 
static int das6402_ai_cmd(struct comedi_device *dev,

			  struct comedi_subdevice *s)

{

	return -EINVAL;

	struct das6402_private *devpriv = dev->private;

	struct comedi_cmd *cmd = &s->async->cmd;

	unsigned int chan_lo = CR_CHAN(cmd->chanlist[0]);

	unsigned int chan_hi = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]);



	das6402_ai_set_mode(dev, s, cmd->chanlist[0], DAS6402_MODE_FIFONEPTY);



	/* load the mux for chanlist conversion */

	outw(DAS6402_AI_MUX_HI(chan_hi) | DAS6402_AI_MUX_LO(chan_lo),

	     dev->iobase + DAS6402_AI_MUX_REG);



	das6402_enable_counter(dev, true);



	/* enable interrupt and pacer trigger */

	outb(DAS6402_CTRL_INTE |

	     DAS6402_CTRL_IRQ(devpriv->irq) |

	     DAS6402_CTRL_PACER_TRIG, dev->iobase + DAS6402_CTRL_REG);



	return 0;

}



static int das6402_ai_check_chanlist(struct comedi_device *dev,