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Message-Id: <b5d20f79b289d7ade9d89c2c8f3e28fafbd686fb.1407804777.git.chase.southwood@gmail.com>
Date: Mon, 11 Aug 2014 21:03:19 -0500
From: Chase Southwood <chase.southwood@...il.com>
To: gregkh@...uxfoundation.org
Cc: abbotti@....co.uk, hsweeten@...ionengravers.com,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
Chase Southwood <chase.southwood@...il.com>
Subject: [PATCH 2/3] staging: comedi: addi_apci_1564: Remove in-driver watchdog support code
Starting with commit 1496e5961113 ("staging: comedi: addi_apci_1564: use
addi_watchdog module to init watchdog subdevice"), this driver uses the
addi_watchdog module to provide support for the watchdog subdevice. Any
remaining watchdog code in-driver can and should be removed.
This will also make future work on the timer and counter subdevices easier.
Signed-off-by: Chase Southwood <chase.southwood@...il.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: H Hartley Sweeten <hsweeten@...ionengravers.com>
---
.../comedi/drivers/addi-data/hwdrv_apci1564.c | 54 +++++-----------------
1 file changed, 12 insertions(+), 42 deletions(-)
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
index 0ce1deb..f8d8cc9 100644
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
@@ -88,9 +88,9 @@
#define APCI1564_TCW_WARN_TIMEBASE_REG(x) (0x1c + ((x) * 0x20))
/*
- * Configures The Timer, Counter or Watchdog
+ * Configures The Timer or Counter
*
- * data[0] Configure as: 0 = Timer, 1 = Counter, 2 = Watchdog
+ * data[0] Configure as: 0 = Timer, 1 = Counter
* data[1] 1 = Enable Interrupt, 0 = Disable Interrupt
* data[2] Time Unit
* data[3] Reload Value
@@ -107,14 +107,7 @@ static int apci1564_timer_config(struct comedi_device *dev,
unsigned int ul_Command1 = 0;
devpriv->tsk_current = current;
- if (data[0] == ADDIDATA_WATCHDOG) {
- devpriv->timer_select_mode = ADDIDATA_WATCHDOG;
-
- /* Disable the watchdog */
- outl(0x0, devpriv->amcc_iobase + APCI1564_WDOG_CTRL_REG);
- /* Loading the Reload value */
- outl(data[3], devpriv->amcc_iobase + APCI1564_WDOG_RELOAD_REG);
- } else if (data[0] == ADDIDATA_TIMER) {
+ if (data[0] == ADDIDATA_TIMER) {
/* First Stop The Timer */
ul_Command1 = inl(devpriv->amcc_iobase + APCI1564_TIMER_CTRL_REG);
ul_Command1 = ul_Command1 & 0xFFFFF9FEUL;
@@ -187,14 +180,13 @@ static int apci1564_timer_config(struct comedi_device *dev,
} else {
dev_err(dev->class_dev, "Invalid subdevice.\n");
}
-
return insn->n;
}
/*
- * Start / Stop The Selected Timer, Counter or Watchdog
+ * Start / Stop The Selected Timer or Counter
*
- * data[0] Configure as: 0 = Timer, 1 = Counter, 2 = Watchdog
+ * data[0] Configure as: 0 = Timer, 1 = Counter
* data[1] 0 = Stop, 1 = Start, 2 = Trigger Clear (Only Counter)
*/
static int apci1564_timer_write(struct comedi_device *dev,
@@ -205,23 +197,6 @@ static int apci1564_timer_write(struct comedi_device *dev,
struct apci1564_private *devpriv = dev->private;
unsigned int ul_Command1 = 0;
- if (devpriv->timer_select_mode == ADDIDATA_WATCHDOG) {
- switch (data[1]) {
- case 0: /* stop the watchdog */
- /* disable the watchdog */
- outl(0x0, devpriv->amcc_iobase + APCI1564_WDOG_CTRL_REG);
- break;
- case 1: /* start the watchdog */
- outl(0x0001, devpriv->amcc_iobase + APCI1564_WDOG_CTRL_REG);
- break;
- case 2: /* Software trigger */
- outl(0x0201, devpriv->amcc_iobase + APCI1564_WDOG_CTRL_REG);
- break;
- default:
- dev_err(dev->class_dev, "Specified functionality does not exist.\n");
- return -EINVAL;
- }
- }
if (devpriv->timer_select_mode == ADDIDATA_TIMER) {
if (data[1] == 1) {
ul_Command1 = inl(devpriv->amcc_iobase + APCI1564_TIMER_CTRL_REG);
@@ -236,8 +211,7 @@ static int apci1564_timer_write(struct comedi_device *dev,
ul_Command1 = ul_Command1 & 0xFFFFF9FEUL;
outl(ul_Command1, devpriv->amcc_iobase + APCI1564_TIMER_CTRL_REG);
}
- }
- if (devpriv->timer_select_mode == ADDIDATA_COUNTER) {
+ } else if (devpriv->timer_select_mode == ADDIDATA_COUNTER) {
ul_Command1 =
inl(dev->iobase +
APCI1564_TCW_CTRL_REG(devpriv->mode_select_register - 1));
@@ -254,12 +228,14 @@ static int apci1564_timer_write(struct comedi_device *dev,
}
outl(ul_Command1, dev->iobase +
APCI1564_TCW_CTRL_REG(devpriv->mode_select_register - 1));
+ } else {
+ dev_err(dev->class_dev, "Invalid subdevice.\n");
}
return insn->n;
}
/*
- * Read The Selected Timer, Counter or Watchdog
+ * Read The Selected Timer or Counter
*/
static int apci1564_timer_read(struct comedi_device *dev,
struct comedi_subdevice *s,
@@ -269,11 +245,7 @@ static int apci1564_timer_read(struct comedi_device *dev,
struct apci1564_private *devpriv = dev->private;
unsigned int ul_Command1 = 0;
- if (devpriv->timer_select_mode == ADDIDATA_WATCHDOG) {
- /* Stores the status of the Watchdog */
- data[0] = inl(devpriv->amcc_iobase + APCI1564_WDOG_STATUS_REG) & 0x1;
- data[1] = inl(devpriv->amcc_iobase + APCI1564_WDOG_REG);
- } else if (devpriv->timer_select_mode == ADDIDATA_TIMER) {
+ if (devpriv->timer_select_mode == ADDIDATA_TIMER) {
/* Stores the status of the Timer */
data[0] = inl(devpriv->amcc_iobase + APCI1564_TIMER_STATUS_REG) & 0x1;
@@ -299,10 +271,8 @@ static int apci1564_timer_read(struct comedi_device *dev,
/* Get the overflow status */
data[4] = (unsigned char) ((ul_Command1 >> 0) & 1);
- } else if ((devpriv->timer_select_mode != ADDIDATA_TIMER)
- && (devpriv->timer_select_mode != ADDIDATA_WATCHDOG)
- && (devpriv->timer_select_mode != ADDIDATA_COUNTER)) {
- dev_err(dev->class_dev, "Invalid Subdevice!\n");
+ } else {
+ dev_err(dev->class_dev, "Invalid subdevice.\n");
}
return insn->n;
}
--
2.0.4
--
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