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

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

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
2014-11-13 11:41:04 -07:00
committed by Greg Kroah-Hartman
parent d1d24cb65e
commit 1fe6a03ac8
1 changed files with 19 additions and 1 deletions
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20
drivers/staging/comedi/drivers/das6402.c
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@@ -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,