lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

staging: comedi: cb_pcidda: cleanup DACCONTROL defines

Browse Source 
Rename the defines used for the D/A Control register so that they
have namespace with this driver. Cleanup the use of these defines.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
2012-10-24 16:33:30 -07:00
committed by Greg Kroah-Hartman
parent c8ffd143fa
commit be2fcdbf91
1 changed files with 21 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/staging/comedi/drivers/cb_pcidda.c
View File

@@ -65,16 +65,14 @@
#define CB_DDA_DIO1_8255_BASE 0x04
/* DAC registers */
#define DACONTROL 0 /* D/A CONTROL REGISTER */
#define SU 0000001 /* Simultaneous update enabled */
#define NOSU 0000000 /* Simultaneous update disabled */
#define ENABLEDAC 0000002 /* Enable specified DAC */
#define DISABLEDAC 0000000 /* Disable specified DAC */
#define RANGE2V5 0000000 /* 2.5V */
#define RANGE5V 0000200 /* 5V */
#define RANGE10V 0000300 /* 10V */
#define UNIP 0000400 /* Unipolar outputs */
#define BIP 0000000 /* Bipolar outputs */
#define CB_DDA_DA_CTRL_REG 0x00 /* D/A Control Register */
#define CB_DDA_DA_CTRL_SU (1 << 0) /* Simultaneous update */
#define CB_DDA_DA_CTRL_EN (1 << 1) /* Enable specified DAC */
#define CB_DDA_DA_CTRL_DAC(x) ((x) << 2) /* Specify DAC channel */
#define CB_DDA_DA_CTRL_RANGE2V5 (0 << 6) /* 2.5V range */
#define CB_DDA_DA_CTRL_RANGE5V (2 << 6) /* 5V range */
#define CB_DDA_DA_CTRL_RANGE10V (3 << 6) /* 10V range */
#define CB_DDA_DA_CTRL_UNIP (1 << 8) /* Unipolar range */
#define DACALIBRATION1 4 /* D/A CALIBRATION REGISTER 1 */
/* write bits */
@@ -364,44 +362,35 @@ static int cb_pcidda_ao_winsn(struct comedi_device *dev,
struct comedi_insn *insn, unsigned int *data)
{
struct cb_pcidda_private *devpriv = dev->private;
unsigned int command;
unsigned int channel, range;
channel = CR_CHAN(insn->chanspec);
range = CR_RANGE(insn->chanspec);
unsigned int channel = CR_CHAN(insn->chanspec);
unsigned int range = CR_RANGE(insn->chanspec);
unsigned int ctrl;
/* adjust calibration dacs if range has changed */
if (range != devpriv->ao_range[channel])
cb_pcidda_calibrate(dev, channel, range);
/* output channel configuration */
command = NOSU | ENABLEDAC;
ctrl = CB_DDA_DA_CTRL_EN | CB_DDA_DA_CTRL_DAC(channel);
/* output channel range */
switch (range) {
case 0:
command |= BIP | RANGE10V;
case 3:
ctrl |= CB_DDA_DA_CTRL_RANGE10V;
break;
case 1:
command |= BIP | RANGE5V;
case 4:
ctrl |= CB_DDA_DA_CTRL_RANGE5V;
break;
case 2:
command |= BIP | RANGE2V5;
break;
case 3:
command |= UNIP | RANGE10V;
break;
case 4:
command |= UNIP | RANGE5V;
break;
case 5:
command |= UNIP | RANGE2V5;
ctrl |= CB_DDA_DA_CTRL_RANGE2V5;
break;
}
/* output channel specification */
command |= channel << 2;
outw(command, dev->iobase + DACONTROL);
if (range > 2)
ctrl |= CB_DDA_DA_CTRL_UNIP;
outw(ctrl, dev->iobase + CB_DDA_DA_CTRL_REG);
/* write data */
outw(data[0], dev->iobase + DADATA + channel * 2);