staging: comedi: cb_pcimdas: provide analog output range table
The analog output range is not programmable. The DAC ranges are
jumper-settable on the board. For aesthetics, provide a range table
for the user with all possible ranges.
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>
diff --git a/drivers/staging/comedi/drivers/cb_pcimdas.c b/drivers/staging/comedi/drivers/cb_pcimdas.c
index b0cc4f5..94da819 100644
--- a/drivers/staging/comedi/drivers/cb_pcimdas.c
+++ b/drivers/staging/comedi/drivers/cb_pcimdas.c
@@ -137,6 +137,19 @@
};
/*
+ * The Analog Output range is not programmable. The DAC ranges are
+ * jumper-settable on the board. The settings are not software-readable.
+ */
+static const struct comedi_lrange cb_pcimdas_ao_range = {
+ 4, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ UNI_RANGE(10),
+ UNI_RANGE(5)
+ }
+};
+
+/*
* this structure is for data unique to this hardware driver. If
* several hardware drivers keep similar information in this structure,
* feel free to suggest moving the variable to the struct comedi_device
@@ -306,8 +319,7 @@
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->maxdata = 0xfff;
- /* ranges are hardware settable, but not software readable. */
- s->range_table = &range_unknown;
+ s->range_table = &cb_pcimdas_ao_range;
s->insn_write = cb_pcimdas_ao_insn_write;
ret = comedi_alloc_subdev_readback(s);