This board has 4 digital inputs not 1. Fix the subdevice init.
The digital input lines are shared with other functions. Add a
comment about this.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/quatech_daqp_cs.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
index a4a5244..b2effb8 100644
--- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
+++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
@@ -741,10 +741,21 @@ static int daqp_auto_attach(struct comedi_device *dev,
if (ret)
return ret;
+ /*
+ * Digital Input subdevice
+ * NOTE: The digital input lines are shared:
+ *
+ * Chan Normal Mode Expansion Mode
+ * ---- ----------------- ----------------------------
+ * 0 DI0, ext. trigger Same as normal mode
+ * 1 DI1 External gain select, lo bit
+ * 2 DI2, ext. clock Same as normal mode
+ * 3 DI3 External gain select, hi bit
+ */
s = &dev->subdevices[2];
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
- s->n_chan = 1;
+ s->n_chan = 4;
s->maxdata = 1;
s->insn_bits = daqp_di_insn_bits;
--
2.5.1
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