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staging: comedi: cb_pcidas: absorb cal_enable_bits() 

This inline function just returns the bits needd to enable
a calibration source. For aethetics, absorb it into the callers.
Sorten the variable name in the private data used to hold the
current calibration source.

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>
This commit is contained in:
H Hartley Sweeten 2015-10-19 09:43:58 -07:00 committed by Greg Kroah-Hartman
parent 46c95d970f
commit 042bac563b
1 changed files with 7 additions and 13 deletions
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20
drivers/staging/comedi/drivers/cb_pcidas.c
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@ -313,16 +313,9 @@ struct cb_pcidas_private {
/* fifo buffers */
unsigned short ai_buffer[AI_BUFFER_SIZE];
unsigned short ao_buffer[AO_BUFFER_SIZE];
unsigned int calibration_source;
unsigned int calib_src;
};
static inline unsigned int cal_enable_bits(struct comedi_device *dev)
{
struct cb_pcidas_private *devpriv = dev->private;
return PCIDAS_CALIB_EN | PCIDAS_CALIB_SRC(devpriv->calibration_source);
}
static int cb_pcidas_ai_eoc(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
@ -352,7 +345,7 @@ static int cb_pcidas_ai_insn_read(struct comedi_device *dev,
/* enable calibration input if appropriate */
if (insn->chanspec & CR_ALT_SOURCE) {
outw(cal_enable_bits(dev),
outw(PCIDAS_CALIB_EN | PCIDAS_CALIB_SRC(devpriv->calib_src),
devpriv->pcibar1 + PCIDAS_CALIB_REG);
chan = 0;
} else {
@ -407,7 +400,7 @@ static int cb_pcidas_ai_insn_config(struct comedi_device *dev,
source);
return -EINVAL;
}
devpriv->calibration_source = source;
devpriv->calib_src = source;
break;
default:
return -EINVAL;
@ -532,9 +525,10 @@ static void cb_pcidas_calib_write(struct comedi_device *dev,
bool trimpot)
{
struct cb_pcidas_private *devpriv = dev->private;
unsigned int calib_bits = cal_enable_bits(dev);
unsigned int calib_bits;
unsigned int bit;
calib_bits = PCIDAS_CALIB_EN | PCIDAS_CALIB_SRC(devpriv->calib_src);
if (trimpot) {
/* select trimpot */
calib_bits |= PCIDAS_CALIB_TRIM_SEL;
@ -552,7 +546,7 @@ static void cb_pcidas_calib_write(struct comedi_device *dev,
}
udelay(1);
calib_bits = cal_enable_bits(dev);
calib_bits = PCIDAS_CALIB_EN | PCIDAS_CALIB_SRC(devpriv->calib_src);
if (!trimpot) {
/* select caldac */
@ -590,7 +584,7 @@ static void cb_pcidas_dac08_write(struct comedi_device *dev, unsigned int val)
{
struct cb_pcidas_private *devpriv = dev->private;
val |= cal_enable_bits(dev);
val |= PCIDAS_CALIB_EN | PCIDAS_CALIB_SRC(devpriv->calib_src);
/* latch the new value into the caldac */
outw(val, devpriv->pcibar1 + PCIDAS_CALIB_REG);