For aesthetics, define a macro to set the analog input range bits.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/adl_pci9111.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adl_pci9111.c b/drivers/staging/comedi/drivers/adl_pci9111.c
index 8ce54c0..dd42bd0a 100644
--- a/drivers/staging/comedi/drivers/adl_pci9111.c
+++ b/drivers/staging/comedi/drivers/adl_pci9111.c
@@ -93,7 +93,8 @@ TODO:
#define PCI9111_AI_STAT_FF_FF BIT(6)
#define PCI9111_AI_STAT_FF_HF BIT(5)
#define PCI9111_AI_STAT_FF_EF BIT(4)
-#define PCI9111_AI_RANGE_MASK (7 << 0)
+#define PCI9111_AI_RANGE(x) (((x) & 0x7) << 0)
+#define PCI9111_AI_RANGE_MASK PCI9111_AI_RANGE(7)
#define PCI9111_AI_TRIG_CTRL_REG 0x0a
#define PCI9111_AI_TRIG_CTRL_TRGEVENT BIT(5)
#define PCI9111_AI_TRIG_CTRL_POTRG BIT(4)
@@ -363,6 +364,7 @@ static int pci9111_ai_do_cmd(struct comedi_device *dev,
struct pci9111_private_data *dev_private = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
unsigned int last_chan = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]);
+ unsigned int range0 = CR_RANGE(cmd->chanlist[0]);
unsigned int trig = 0;
/* Set channel scan limit */
@@ -374,11 +376,8 @@ static int pci9111_ai_do_cmd(struct comedi_device *dev,
outb(last_chan, dev->iobase + PCI9111_AI_CHANNEL_REG);
- /* Set gain */
- /* This is the same gain on every channel */
-
- outb(CR_RANGE(cmd->chanlist[0]) & PCI9111_AI_RANGE_MASK,
- dev->iobase + PCI9111_AI_RANGE_STAT_REG);
+ /* Set gain - all channels use the same range */
+ outb(PCI9111_AI_RANGE(range0), dev->iobase + PCI9111_AI_RANGE_STAT_REG);
/* Set timer pacer */
dev_private->scan_delay = 0;
@@ -571,7 +570,7 @@ static int pci9111_ai_insn_read(struct comedi_device *dev,
status = inb(dev->iobase + PCI9111_AI_RANGE_STAT_REG);
if ((status & PCI9111_AI_RANGE_MASK) != range) {
- outb(range & PCI9111_AI_RANGE_MASK,
+ outb(PCI9111_AI_RANGE(range),
dev->iobase + PCI9111_AI_RANGE_STAT_REG);
}
--
2.5.1
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