---
drivers/staging/comedi/drivers/amplc_pci230.c | 38 ++++++++++++++++-----------
1 file changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c
index 907c39c..cf5ac8a 100644
--- a/drivers/staging/comedi/drivers/amplc_pci230.c
+++ b/drivers/staging/comedi/drivers/amplc_pci230.c
@@ -379,8 +379,12 @@
#define GAT_GND 1 /* GND (i.e. disabled) */
#define GAT_EXT 2 /* external gate input (PPCn on PCI230) */
#define GAT_NOUTNM2 3 /* inverted output of channel-2 modulo total */
-/* Macro to construct gate input configuration register value. */
-#define GAT_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
+
+static inline unsigned int pci230_gat_config(unsigned int chan,
+ unsigned int src)
+{
+ return ((chan & 3) << 3) | (src & 7);
+}
/*
* Summary of CLK_OUTNM1 and GAT_NOUTNM2 connections for PCI230 and PCI260:
@@ -1263,7 +1267,8 @@ static void pci230_ao_start(struct comedi_device *dev,
irqflags);
}
/* Set CT1 gate high to start counting. */
- outb(GAT_CONFIG(1, GAT_VCC), dev->iobase + PCI230_ZGAT_SCE);
+ outb(pci230_gat_config(1, GAT_VCC),
+ dev->iobase + PCI230_ZGAT_SCE);
break;
case TRIG_INT:
async->inttrig = pci230_ao_inttrig_scan_begin;
@@ -1351,7 +1356,8 @@ static int pci230_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
* cmd->scan_begin_arg is sampling period in ns.
* Gate it off for now.
*/
- outb(GAT_CONFIG(1, GAT_GND), dev->iobase + PCI230_ZGAT_SCE);
+ outb(pci230_gat_config(1, GAT_GND),
+ dev->iobase + PCI230_ZGAT_SCE);
pci230_ct_setup_ns_mode(dev, 1, I8254_MODE3,
cmd->scan_begin_arg,
cmd->flags);
@@ -1792,9 +1798,9 @@ static int pci230_ai_inttrig_scan_begin(struct comedi_device *dev,
spin_lock_irqsave(&devpriv->ai_stop_spinlock, irqflags);
if (devpriv->ai_cmd_started) {
/* Trigger scan by waggling CT0 gate source. */
- zgat = GAT_CONFIG(0, GAT_GND);
+ zgat = pci230_gat_config(0, GAT_GND);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
- zgat = GAT_CONFIG(0, GAT_VCC);
+ zgat = pci230_gat_config(0, GAT_VCC);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
}
spin_unlock_irqrestore(&devpriv->ai_stop_spinlock, irqflags);
@@ -1926,20 +1932,20 @@ static void pci230_ai_start(struct comedi_device *dev,
* Conversion timer CT2 needs to be gated by
* inverted output of monostable CT2.
*/
- zgat = GAT_CONFIG(2, GAT_NOUTNM2);
+ zgat = pci230_gat_config(2, GAT_NOUTNM2);
} else {
/*
* Conversion timer CT2 needs to be gated on
* continuously.
*/
- zgat = GAT_CONFIG(2, GAT_VCC);
+ zgat = pci230_gat_config(2, GAT_VCC);
}
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
if (cmd->scan_begin_src != TRIG_FOLLOW) {
/* Set monostable CT0 trigger source. */
switch (cmd->scan_begin_src) {
default:
- zgat = GAT_CONFIG(0, GAT_VCC);
+ zgat = pci230_gat_config(0, GAT_VCC);
break;
case TRIG_EXT:
/*
@@ -1950,21 +1956,21 @@ static void pci230_ai_start(struct comedi_device *dev,
* input in order to use it as an external scan
* trigger.
*/
- zgat = GAT_CONFIG(0, GAT_EXT);
+ zgat = pci230_gat_config(0, GAT_EXT);
break;
case TRIG_TIMER:
/*
* Monostable CT0 triggered by rising edge on
* inverted output of CT1 (falling edge on CT1).
*/
- zgat = GAT_CONFIG(0, GAT_NOUTNM2);
+ zgat = pci230_gat_config(0, GAT_NOUTNM2);
break;
case TRIG_INT:
/*
* Monostable CT0 is triggered by inttrig
* function waggling the CT0 gate source.
*/
- zgat = GAT_CONFIG(0, GAT_VCC);
+ zgat = pci230_gat_config(0, GAT_VCC);
break;
}
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
@@ -1974,7 +1980,7 @@ static void pci230_ai_start(struct comedi_device *dev,
* Scan period timer CT1 needs to be
* gated on to start counting.
*/
- zgat = GAT_CONFIG(1, GAT_VCC);
+ zgat = pci230_gat_config(1, GAT_VCC);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
break;
case TRIG_INT:
@@ -2216,7 +2222,7 @@ static int pci230_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
* Note, counter/timer output 2 can be monitored on the
* connector: PCI230 pin 21, PCI260 pin 18.
*/
- zgat = GAT_CONFIG(2, GAT_GND);
+ zgat = pci230_gat_config(2, GAT_GND);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
/* Set counter/timer 2 to the specified conversion period. */
pci230_ct_setup_ns_mode(dev, 2, I8254_MODE3, cmd->convert_arg,
@@ -2234,7 +2240,7 @@ static int pci230_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
* monostable to stop it triggering. The trigger
* source will be changed later.
*/
- zgat = GAT_CONFIG(0, GAT_VCC);
+ zgat = pci230_gat_config(0, GAT_VCC);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
pci230_ct_setup_ns_mode(dev, 0, I8254_MODE1,
((uint64_t)cmd->convert_arg *
@@ -2247,7 +2253,7 @@ static int pci230_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
*
* Set up CT1 but gate it off for now.
*/
- zgat = GAT_CONFIG(1, GAT_GND);
+ zgat = pci230_gat_config(1, GAT_GND);
outb(zgat, dev->iobase + PCI230_ZGAT_SCE);
pci230_ct_setup_ns_mode(dev, 1, I8254_MODE3,
cmd->scan_begin_arg, |
