diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2016-03-22 11:10:34 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-28 07:30:36 -0700 |
| commit | f0c9305ede52b42021ea53a33b3a2878e0c5d51e (patch) | |
| tree | 9f546b5bca16751abef065faa39eb796f2cc7b73 /drivers/staging/comedi/drivers/ni_660x.c | |
| parent | aa94f288882583fb2a214110ad021a75e78ff809 (diff) | |
staging: comedi: ni_660x: add a comment about the initial DIO state
The (*auto_attach) initializes all the DIO channels to a default state.
Add a comment for clarity.
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/ni_660x.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_660x.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 3415a15650fe..6f84946ea9a4 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -1073,6 +1073,11 @@ static int ni_660x_auto_attach(struct comedi_device *dev, for (i = 0; i < n_counters; ++i) ni_tio_init_counter(&devpriv->counter_dev->counters[i]); + /* + * Default the DIO channels as: + * chan 0-7: DIO inputs + * chan 8-39: counter signal inputs + */ for (i = 0; i < NUM_PFI_CHANNELS; ++i) { if (i < 8) ni_660x_set_pfi_routing(dev, i, NI_660X_PFI_OUTPUT_DIO); |