Rename the macros that define values for the reference DACs register to
avoid CamelCase, and to make it clearer which register they are
associated with. Add a macro `DAQBOARD2000_REF_DACS_SET` for the value
`0x80` that triggers setting one of the references.
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
drivers/staging/comedi/drivers/daqboard2000.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/comedi/drivers/daqboard2000.c b/drivers/staging/comedi/drivers/daqboard2000.c
index b6b4ee4..7034e68 100644
--- a/drivers/staging/comedi/drivers/daqboard2000.c
+++ b/drivers/staging/comedi/drivers/daqboard2000.c
@@ -244,8 +244,9 @@ static const struct comedi_lrange range_daqboard2000_ai = {
#define DAQBOARD2000_TRIG_CONTROL_DISABLE 0x0000
/* Reference Dac Selection */
-#define DAQBOARD2000_PosRefDacSelect 0x0100
-#define DAQBOARD2000_NegRefDacSelect 0x0000
+#define DAQBOARD2000_REF_DACS_SET 0x0080
+#define DAQBOARD2000_REF_DACS_SELECT_POS_REF 0x0100
+#define DAQBOARD2000_REF_DACS_SELECT_NEG_REF 0x0000
struct daq200_boardtype {
const char *name;
@@ -571,7 +572,7 @@ static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
int timeout;
/* Set the + reference dac value in the FPGA */
- writew(0x80 | DAQBOARD2000_PosRefDacSelect,
+ writew(DAQBOARD2000_REF_DACS_SET | DAQBOARD2000_REF_DACS_SELECT_POS_REF,
dev->mmio + DAQBOARD2000_REG_REF_DACS);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(dev->mmio + DAQBOARD2000_REG_DAC_STATUS);
@@ -581,7 +582,7 @@ static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
}
/* Set the - reference dac value in the FPGA */
- writew(0x80 | DAQBOARD2000_NegRefDacSelect,
+ writew(DAQBOARD2000_REF_DACS_SET | DAQBOARD2000_REF_DACS_SELECT_NEG_REF,
dev->mmio + DAQBOARD2000_REG_REF_DACS);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(dev->mmio + DAQBOARD2000_REG_DAC_STATUS);
--
2.8.1
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
