diff options
| author |   Ian Abbott <abbotti@mev.co.uk> | 2019-04-16 14:37:48 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-17 12:40:51 +0200 |
| commit | 6229fed9ee85f38126ebb0818ada55dddcf9f97a (patch) | |
| tree | d4b542d0c36b5d85f514482bae4b657b9044e795 /drivers/staging | |
| parent | staging: comedi: dyna_pci10xx: Don't bother configuring len_chanlist (diff) | |
| download | linux-dev-6229fed9ee85f38126ebb0818ada55dddcf9f97a.tar.xz linux-dev-6229fed9ee85f38126ebb0818ada55dddcf9f97a.zip | |
staging: comedi: dyna_pci10xx: Set number of AO channels to 1
The "dyna_pci10xx" driver supports the Dynalog India PCI-1050. There
seems to be very little online information available about this card,
but as far as I can tell[*], it only has 1 AO (analog output) channel,
not 16 AO channels as reported in the Comedi subdevice information.
Besides, the Comedi "insn_write" handler for the AO subdevice takes no
account of channel numbers. Change the `n_chans` member of the AO
subdevice structure to 1 to reflect this.
[*] The card is no longer mentioned on the manufacturer's web-site and I
couldn't find any archived page for the site on archive.org. I found
part of a scientific paper which describes the card as having a single
channel D/A converter:
<http://shodhganga.inflibnet.ac.in/bitstream/10603/150646/15/15_chapter%205.pdf>.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/comedi/drivers/dyna_pci10xx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c index 08c7e8eba285..c224422bb126 100644 --- a/drivers/staging/comedi/drivers/dyna_pci10xx.c +++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c @@ -196,7 +196,7 @@ static int dyna_pci10xx_auto_attach(struct comedi_device *dev, s = &dev->subdevices[1]; s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; - s->n_chan = 16; + s->n_chan = 1; s->maxdata = 0x0FFF; s->range_table = &range_unipolar10; s->insn_write = dyna_pci10xx_insn_write_ao; |