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staging: comedi: addi_apci_3xxx: remove 'b_SingleDiff' private data 

The analog reference desired for the acquisition is stored in the
insn->chanspec that is passed to the (*insn_read) function. There is
no need to use a private data variable to hold the desired analog
reference that is set in the (*insn_config).

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 2013-06-12 16:21:53 -07:00 committed by Greg Kroah-Hartman
parent 8d4729066c
commit 040540763b
2 changed files with 2 additions and 10 deletions
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8
drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c
View File

@ -41,14 +41,10 @@ static int apci3xxx_ai_configure(struct comedi_device *dev,
{
const struct apci3xxx_boardinfo *board = comedi_board(dev);
struct apci3xxx_private *devpriv = dev->private;
unsigned int aref_mode = data[1];
unsigned int time_base = data[2];
unsigned int reload_time = data[3];
unsigned int acq_ns;
if (aref_mode != 0 && aref_mode != 1)
return -EINVAL;
if (time_base > 2)
return -EINVAL;
@ -80,7 +76,6 @@ static int apci3xxx_ai_configure(struct comedi_device *dev,
devpriv->ui_EocEosConversionTime = reload_time;
devpriv->b_EocEosConversionTimeBase = time_base;
devpriv->b_SingelDiff = aref_mode;
/* Set the convert timing unit */
writel(time_base, devpriv->mmio + 36);
@ -116,6 +111,7 @@ static int apci3xxx_ai_insn_read(struct comedi_device *dev,
struct apci3xxx_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int range = CR_RANGE(insn->chanspec);
unsigned int aref = CR_AREF(insn->chanspec);
unsigned char use_interrupt = 0; /* FIXME: use interrupts */
unsigned int delay_mode;
unsigned int val;
@ -139,7 +135,7 @@ static int apci3xxx_ai_insn_read(struct comedi_device *dev,
/* Make the configuration */
val = (range & 3) | ((range >> 2) << 6) |
(devpriv->b_SingelDiff << 7);
((aref == AREF_DIFF) << 7);
writel(val, devpriv->mmio + 0);
/* Channel selection */

4
drivers/staging/comedi/drivers/addi_apci_3xxx.c
View File

@ -356,7 +356,6 @@ struct apci3xxx_private {
unsigned char b_EocEosInterrupt;
unsigned int ui_EocEosConversionTime;
unsigned char b_EocEosConversionTimeBase;
unsigned char b_SingelDiff;
};
#include "addi-data/hwdrv_apci3xxx.c"
@ -611,9 +610,6 @@ static int apci3xxx_auto_attach(struct comedi_device *dev,
s->insn_config = apci3xxx_ai_insn_config;
s->insn_read = apci3xxx_ai_insn_read;
if ((board->ai_subdev_flags & (SDF_COMMON | SDF_GROUND)) == 0)
devpriv->b_SingelDiff = 1;
} else {
s->type = COMEDI_SUBD_UNUSED;
}