diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-11-13 11:41:04 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-26 15:35:24 -0800 |
| commit | 1fe6a03ac8ddbf0fa93fe4aa6d728cdb6c056a1c (patch) | |
| tree | 2c66ec725fc89cacda98f8ef8c210ba6b470caf3 /drivers/staging/comedi/drivers/das6402.c | |
| parent | d1d24cb65ee3605cc348a16eb9fd833c60c07ff7 (diff) | |
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: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/das6402.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/das6402.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/das6402.c b/drivers/staging/comedi/drivers/das6402.c index 047e9737d1fb..780f4f646ea0 100644 --- a/drivers/staging/comedi/drivers/das6402.c +++ b/drivers/staging/comedi/drivers/das6402.c @@ -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, |