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Message-ID: <201206201926.12261.hartleys@visionengravers.com>
Date: Wed, 20 Jun 2012 19:26:11 -0700
From: H Hartley Sweeten <hartleys@...ionengravers.com>
To: Linux Kernel <linux-kernel@...r.kernel.org>
CC: <devel@...verdev.osuosl.org>, <abbotti@....co.uk>,
<fmhess@...rs.sourceforge.net>, <gregkh@...uxfoundation.org>
Subject: [PATCH 07/12] staging: comedi: s626: remove forward declarations 5
Move the irq set/reset/clear and ns_to_timer helper functions
up to remove the need for the forward declarations.
Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: Frank Mori Hess <fmhess@...rs.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/staging/comedi/drivers/s626.c | 224 +++++++++++++++++-----------------
1 file changed, 109 insertions(+), 115 deletions(-)
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index 3cdb293..cc18bf0 100644
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -207,12 +207,6 @@ static struct dio_private *dio_private_word[]={
#define devpriv ((struct s626_private *)dev->private)
#define diopriv ((struct dio_private *)s->private)
-static int s626_dio_set_irq(struct comedi_device *dev, unsigned int chan);
-static int s626_dio_reset_irq(struct comedi_device *dev, unsigned int gruop,
- unsigned int mask);
-static int s626_dio_clear_irq(struct comedi_device *dev);
-static int s626_ns_to_timer(int *nanosec, int round_mode);
-
/* COUNTER OBJECT ------------------------------------------------ */
struct enc_private {
/* Pointers to functions that differ for A and B counters: */
@@ -803,6 +797,87 @@ static unsigned int s626_ai_reg_to_uint(int data)
/* return 0; */
/* } */
+static int s626_dio_set_irq(struct comedi_device *dev, unsigned int chan)
+{
+ unsigned int group;
+ unsigned int bitmask;
+ unsigned int status;
+
+ /* select dio bank */
+ group = chan / 16;
+ bitmask = 1 << (chan - (16 * group));
+ DEBUG("s626_dio_set_irq: enable interrupt on dio channel %d group %d\n",
+ chan - (16 * group), group);
+
+ /* set channel to capture positive edge */
+ status = DEBIread(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->RDEdgSel);
+ DEBIwrite(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->WREdgSel,
+ bitmask | status);
+
+ /* enable interrupt on selected channel */
+ status = DEBIread(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->RDIntSel);
+ DEBIwrite(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->WRIntSel,
+ bitmask | status);
+
+ /* enable edge capture write command */
+ DEBIwrite(dev, LP_MISC1, MISC1_EDCAP);
+
+ /* enable edge capture on selected channel */
+ status = DEBIread(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->RDCapSel);
+ DEBIwrite(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->WRCapSel,
+ bitmask | status);
+
+ return 0;
+}
+
+static int s626_dio_reset_irq(struct comedi_device *dev, unsigned int group,
+ unsigned int mask)
+{
+ DEBUG
+ ("s626_dio_reset_irq: disable interrupt on dio channel %d group %d\n",
+ mask, group);
+
+ /* disable edge capture write command */
+ DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
+
+ /* enable edge capture on selected channel */
+ DEBIwrite(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->WRCapSel, mask);
+
+ return 0;
+}
+
+static int s626_dio_clear_irq(struct comedi_device *dev)
+{
+ unsigned int group;
+
+ /* disable edge capture write command */
+ DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
+
+ for (group = 0; group < S626_DIO_BANKS; group++) {
+ /* clear pending events and interrupt */
+ DEBIwrite(dev,
+ ((struct dio_private *)(dev->subdevices + 2 +
+ group)->private)->WRCapSel,
+ 0xffff);
+ }
+
+ return 0;
+}
+
static irqreturn_t s626_irq_handler(int irq, void *d)
{
struct comedi_device *dev = d;
@@ -1500,6 +1575,34 @@ static int s626_ai_inttrig(struct comedi_device *dev,
return 1;
}
+/* This function doesn't require a particular form, this is just what
+ * happens to be used in some of the drivers. It should convert ns
+ * nanoseconds to a counter value suitable for programming the device.
+ * Also, it should adjust ns so that it cooresponds to the actual time
+ * that the device will use. */
+static int s626_ns_to_timer(int *nanosec, int round_mode)
+{
+ int divider, base;
+
+ base = 500; /* 2MHz internal clock */
+
+ switch (round_mode) {
+ case TRIG_ROUND_NEAREST:
+ default:
+ divider = (*nanosec + base / 2) / base;
+ break;
+ case TRIG_ROUND_DOWN:
+ divider = (*nanosec) / base;
+ break;
+ case TRIG_ROUND_UP:
+ divider = (*nanosec + base - 1) / base;
+ break;
+ }
+
+ *nanosec = base * divider;
+ return divider - 1;
+}
+
/* TO COMPLETE */
static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
@@ -1832,34 +1935,6 @@ static int s626_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
return 0;
}
-/* This function doesn't require a particular form, this is just what
- * happens to be used in some of the drivers. It should convert ns
- * nanoseconds to a counter value suitable for programming the device.
- * Also, it should adjust ns so that it cooresponds to the actual time
- * that the device will use. */
-static int s626_ns_to_timer(int *nanosec, int round_mode)
-{
- int divider, base;
-
- base = 500; /* 2MHz internal clock */
-
- switch (round_mode) {
- case TRIG_ROUND_NEAREST:
- default:
- divider = (*nanosec + base / 2) / base;
- break;
- case TRIG_ROUND_DOWN:
- divider = (*nanosec) / base;
- break;
- case TRIG_ROUND_UP:
- divider = (*nanosec + base - 1) / base;
- break;
- }
-
- *nanosec = base * divider;
- return divider - 1;
-}
-
static int s626_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
@@ -1980,87 +2055,6 @@ static int s626_dio_insn_config(struct comedi_device *dev,
return 1;
}
-static int s626_dio_set_irq(struct comedi_device *dev, unsigned int chan)
-{
- unsigned int group;
- unsigned int bitmask;
- unsigned int status;
-
- /* select dio bank */
- group = chan / 16;
- bitmask = 1 << (chan - (16 * group));
- DEBUG("s626_dio_set_irq: enable interrupt on dio channel %d group %d\n",
- chan - (16 * group), group);
-
- /* set channel to capture positive edge */
- status = DEBIread(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->RDEdgSel);
- DEBIwrite(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->WREdgSel,
- bitmask | status);
-
- /* enable interrupt on selected channel */
- status = DEBIread(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->RDIntSel);
- DEBIwrite(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->WRIntSel,
- bitmask | status);
-
- /* enable edge capture write command */
- DEBIwrite(dev, LP_MISC1, MISC1_EDCAP);
-
- /* enable edge capture on selected channel */
- status = DEBIread(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->RDCapSel);
- DEBIwrite(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->WRCapSel,
- bitmask | status);
-
- return 0;
-}
-
-static int s626_dio_reset_irq(struct comedi_device *dev, unsigned int group,
- unsigned int mask)
-{
- DEBUG
- ("s626_dio_reset_irq: disable interrupt on dio channel %d group %d\n",
- mask, group);
-
- /* disable edge capture write command */
- DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
-
- /* enable edge capture on selected channel */
- DEBIwrite(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->WRCapSel, mask);
-
- return 0;
-}
-
-static int s626_dio_clear_irq(struct comedi_device *dev)
-{
- unsigned int group;
-
- /* disable edge capture write command */
- DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
-
- for (group = 0; group < S626_DIO_BANKS; group++) {
- /* clear pending events and interrupt */
- DEBIwrite(dev,
- ((struct dio_private *)(dev->subdevices + 2 +
- group)->private)->WRCapSel,
- 0xffff);
- }
-
- return 0;
-}
-
/* Now this function initializes the value of the counter (data[0])
and set the subdevice. To complete with trigger and interrupt
configuration */
--
1.7.11
--
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