Introduce a helper function to set the operation mode of a timer.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
.../comedi/drivers/addi-data/hwdrv_apci3120.c | 57 +++++++---------------
drivers/staging/comedi/drivers/addi_apci_3120.c | 6 +++
2 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
index a876ada..dc6eb56 100644
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3120.c
@@ -101,8 +101,6 @@ This program is distributed in the hope that it will be
useful, but WITHOUT ANY
#define APCI3120_10_GAIN 0x30
#define APCI3120_SEQ_RAM_ADDRESS 0x06
#define APCI3120_RESET_FIFO 0x0c
-#define APCI3120_TIMER_0_MODE_2 0x01
-#define APCI3120_TIMER_0_MODE_4 0x2
#define APCI3120_ENABLE_TIMER0 0x1000
#define APCI3120_CLEAR_PR 0xf0ff
#define APCI3120_CLEAR_PA 0xfff0
@@ -140,14 +138,6 @@ This program is distributed in the hope that it will be
useful, but WITHOUT ANY
#define APCI3120_ENABLE_TIMER_INT 0x04
#define APCI3120_DISABLE_TIMER_INT (~APCI3120_ENABLE_TIMER_INT)
#define APCI3120_WRITE_MODE_SELECT 0x0e
-#define APCI3120_TIMER_1_MODE_2 0x4
-
-/* $$ BIT FOR MODE IN nCsTimerCtr1 */
-#define APCI3120_TIMER_2_MODE_0 0x0
-#define APCI3120_TIMER_2_MODE_2 0x10
-#define APCI3120_TIMER_2_MODE_5 0x30
-
-#define APCI3120_TIMER_CRT1 0x0c
#define APCI3120_TIMER_STATUS_REGISTER 0x0d
#define APCI3120_RD_STATUS 0x02
@@ -224,6 +214,16 @@ static unsigned int apci3120_timer_read(struct
comedi_device *dev,
return val;
}
+static void apci3120_timer_set_mode(struct comedi_device *dev,
+ unsigned int timer, unsigned int mode)
+{
+ struct apci3120_private *devpriv = dev->private;
+
+ devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(timer);
+ devpriv->timer_mode |= APCI3120_TIMER_MODE(timer, mode);
+ outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_MODE_REG);
+}
+
static int apci3120_ai_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
@@ -373,10 +373,7 @@ static int apci3120_ai_insn_read(struct comedi_device *dev,
return -EINVAL;
/* Initialize Timer 0 mode 4 */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(0);
- devpriv->timer_mode |= APCI3120_TIMER_0_MODE_4;
- outb(devpriv->timer_mode,
- dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 0, APCI3120_TIMER_MODE4);
/* Reset the scan bit and Disables the EOS, DMA, EOC
interrupt */
devpriv->b_ModeSelectRegister =
@@ -456,10 +453,7 @@ static int apci3120_ai_insn_read(struct comedi_device *dev,
return -EINVAL;
/* Initialize Timer 0 mode 2 */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(0);
- devpriv->timer_mode |= APCI3120_TIMER_0_MODE_2;
- outb(devpriv->timer_mode,
- dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 0, APCI3120_TIMER_MODE2);
/* Set the conversion time */
apci3120_timer_write(dev, 0, divisor);
@@ -755,9 +749,7 @@ static int apci3120_cyclic_ai(int mode,
switch (mode) {
case 1:
/* init timer0 in mode 2 */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(0);
- devpriv->timer_mode |= APCI3120_TIMER_0_MODE_2;
- outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 0, APCI3120_TIMER_MODE2);
/* Set the conversion time */
apci3120_timer_write(dev, 0, divisor0);
@@ -765,17 +757,13 @@ static int apci3120_cyclic_ai(int mode,
case 2:
/* init timer1 in mode 2 */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(1);
- devpriv->timer_mode |= APCI3120_TIMER_1_MODE_2;
- outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 1, APCI3120_TIMER_MODE2);
/* Set the scan begin time */
apci3120_timer_write(dev, 1, divisor1);
/* init timer0 in mode 2 */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(0);
- devpriv->timer_mode |= APCI3120_TIMER_0_MODE_2;
- outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 0, APCI3120_TIMER_MODE2);
/* Set the conversion time */
apci3120_timer_write(dev, 0, divisor0);
@@ -824,10 +812,7 @@ static int apci3120_cyclic_ai(int mode,
dev->iobase + APCI3120_WRITE_MODE_SELECT);
/* (1) Init timer 2 in mode 0 and write timer value */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(2);
- devpriv->timer_mode |= APCI3120_TIMER_2_MODE_0;
- outb(devpriv->timer_mode,
- dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 2, APCI3120_TIMER_MODE0);
/* Set the scan stop count (not sure about the -2) */
apci3120_timer_write(dev, 2, cmd->stop_arg - 2);
@@ -1422,22 +1407,16 @@ static int apci3120_config_insn_timer(struct
comedi_device *dev,
dev->iobase + APCI3120_WRITE_MODE_SELECT);
if (data[0] == APCI3120_TIMER) { /* initialize timer */
/* Set the Timer 2 in mode 2(Timer) */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(2);
- devpriv->timer_mode |= APCI3120_TIMER_2_MODE_2;
- outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 2, APCI3120_TIMER_MODE2);
/* Set timer 2 delay */
apci3120_timer_write(dev, 2, divisor);
/* timer2 in Timer mode enabled */
devpriv->b_Timer2Mode = APCI3120_TIMER;
-
} else { /* Initialize Watch dog */
-
/* Set the Timer 2 in mode 5(Watchdog) */
- devpriv->timer_mode &= ~APCI3120_TIMER_MODE_MASK(2);
- devpriv->timer_mode |= APCI3120_TIMER_2_MODE_5;
- outb(devpriv->timer_mode, dev->iobase + APCI3120_TIMER_CRT1);
+ apci3120_timer_set_mode(dev, 2, APCI3120_TIMER_MODE5);
/* Set timer 2 delay */
apci3120_timer_write(dev, 2, divisor);
diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c
b/drivers/staging/comedi/drivers/addi_apci_3120.c
index 999add3..20babac 100644
--- a/drivers/staging/comedi/drivers/addi_apci_3120.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3120.c
@@ -20,6 +20,12 @@
#define APCI3120_AO_REG(x) (0x08 + (((x) / 4) * 2))
#define APCI3120_AO_MUX(x) (((x) & 0x3) << 14)
#define APCI3120_AO_DATA(x) ((x) << 0)
+#define APCI3120_TIMER_MODE_REG 0x0c
+#define APCI3120_TIMER_MODE(_t, _m) ((_m) << ((_t) * 2))
+#define APCI3120_TIMER_MODE0 0 /* I8254_MODE0 */
+#define APCI3120_TIMER_MODE2 1 /* I8254_MODE2 */
+#define APCI3120_TIMER_MODE4 2 /* I8254_MODE4 */
+#define APCI3120_TIMER_MODE5 3 /* I8254_MODE5 */
#define APCI3120_TIMER_MODE_MASK(_t) (3 << ((_t) * 2))
#define APCI3120_CTR0_REG 0x0d
#define APCI3120_CTR0_DO_BITS(x) ((x) << 4)
--
2.0.3
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