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staging: comedi: daqboard2000: rename reference DACs register macros

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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 `DB2K_REG_DACS_SET` for the value `0x0080`
that triggers setting one of the references.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2016-05-19 19:15:25 +01:00 committed by Greg Kroah-Hartman
parent 77b9634cbd
commit 2c7aab274d
1 changed files with 5 additions and 4 deletions
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9
drivers/staging/comedi/drivers/daqboard2000.c
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@ -244,8 +244,9 @@ static const struct comedi_lrange range_daqboard2000_ai = {
#define DB2K_TRIG_CONTROL_DISABLE 0x0000
/* Reference Dac Selection */
#define DAQBOARD2000_PosRefDacSelect 0x0100
#define DAQBOARD2000_NegRefDacSelect 0x0000
#define DB2K_REF_DACS_SET 0x0080
#define DB2K_REF_DACS_SELECT_POS_REF 0x0100
#define DB2K_REF_DACS_SELECT_NEG_REF 0x0000
struct daq200_boardtype {
const char *name;
@ -569,7 +570,7 @@ static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
int timeout;
/* Set the + reference dac value in the FPGA */
writew(0x80 | DAQBOARD2000_PosRefDacSelect,
writew(DB2K_REF_DACS_SET | DB2K_REF_DACS_SELECT_POS_REF,
dev->mmio + DB2K_REG_REF_DACS);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(dev->mmio + DB2K_REG_DAC_STATUS);
@ -579,7 +580,7 @@ static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
}
/* Set the - reference dac value in the FPGA */
writew(0x80 | DAQBOARD2000_NegRefDacSelect,
writew(DB2K_REF_DACS_SET | DB2K_REF_DACS_SELECT_NEG_REF,
dev->mmio + DB2K_REG_REF_DACS);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(dev->mmio + DB2K_REG_DAC_STATUS);