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Date: Sun, 9 Mar 2014 09:24:41 -0700
From: Conrad Meyer <cemeyer@...edu>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Ian Abbott <abbotti@....co.uk>,
H Hartley Sweeten <hsweeten@...ionengravers.com>,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
Conrad Meyer <cse.cem@...il.com>
Subject: [PATCH 2/2] Staging: comedi: Validate early to flatten code
Take advantage of -EINVAL returns to flatten code structure and
hopefully reduce the number of 80+ character lines.
Signed-off-by: Conrad Meyer <cse.cem@...il.com>
---
.../comedi/drivers/addi-data/hwdrv_apci1500.c | 621 ++++++++++-----------
1 file changed, 303 insertions(+), 318 deletions(-)
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
index e43db39..cdc6d3d 100644
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
@@ -307,439 +307,424 @@ static int i_APCI1500_ConfigDigitalInputEvent(struct comedi_device *dev,
i_PatternTransition | (1 << (i_MaxChannel -
i_Count));
break;
case 4:
i_PatternTransition =
i_PatternTransition | (1 << (i_MaxChannel -
i_Count));
break;
case 5:
break;
default:
dev_warn(dev->hw_dev,
"The option indicated in the event mask does not exist\n");
return -EINVAL;
}
}
if (data[0] == 1) {
/* Test the interrupt logic */
- if (data[1] == APCI1500_AND ||
- data[1] == APCI1500_OR ||
- data[1] == APCI1500_OR_PRIORITY) {
- /* Tests if a transition was declared */
- /* for a OR PRIORITY logic */
-
- if (data[1] == APCI1500_OR_PRIORITY
- && i_PatternTransition != 0) {
- dev_warn(dev->hw_dev,
- "Transition error on an OR PRIORITY logic\n");
- return -EINVAL;
- }
+ if (data[1] != APCI1500_AND && data[1] != APCI1500_OR &&
+ data[1] != APCI1500_OR_PRIORITY) {
+ dev_warn(dev->hw_dev,
+ "The choice for interrupt logic does not exist\n");
+ return -EINVAL;
+ }
- /* Tests if more than one transition */
- /* was declared for an AND logic */
+ /* Tests if a transition was declared */
+ /* for a OR PRIORITY logic */
- if (data[1] == APCI1500_AND) {
- for (i_Count = 0; i_Count < 8; i_Count++) {
- i_PatternTransitionCount =
- i_PatternTransitionCount +
- ((i_PatternTransition >>
- i_Count) & 0x1);
+ if (data[1] == APCI1500_OR_PRIORITY
+ && i_PatternTransition != 0) {
+ dev_warn(dev->hw_dev,
+ "Transition error on an OR PRIORITY logic\n");
+ return -EINVAL;
+ }
- }
+ /* Tests if more than one transition */
+ /* was declared for an AND logic */
- if (i_PatternTransitionCount > 1) {
- dev_warn(dev->hw_dev,
- "Transition error on an AND logic\n");
- return -EINVAL;
- }
- }
+ if (data[1] == APCI1500_AND) {
+ for (i_Count = 0; i_Count < 8; i_Count++) {
+ i_PatternTransitionCount =
+ i_PatternTransitionCount +
+ ((i_PatternTransition >>
+ i_Count) & 0x1);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port A */
- outb(0xF0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the polarity register of port 1 */
- outb(APCI1500_RW_PORT_A_PATTERN_POLARITY,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternPolarity,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
-
- /* Selects the pattern mask register of */
- /* port 1 */
- outb(APCI1500_RW_PORT_A_PATTERN_MASK,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternMask,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the pattern transition register */
- /* of port 1 */
- outb(APCI1500_RW_PORT_A_PATTERN_TRANSITION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternTransition,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ }
- /* Selects the mode specification mask */
- /* register of port 1 */
- outb(APCI1500_RW_PORT_A_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue =
- inb(devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ if (i_PatternTransitionCount > 1) {
+ dev_warn(dev->hw_dev,
+ "Transition error on an AND logic\n");
+ return -EINVAL;
+ }
+ }
- /* Selects the mode specification mask */
- /* register of port 1 */
- outb(APCI1500_RW_PORT_A_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port A */
+ outb(0xF0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the polarity register of port 1 */
+ outb(APCI1500_RW_PORT_A_PATTERN_POLARITY,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternPolarity,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ /* Selects the pattern mask register of */
+ /* port 1 */
+ outb(APCI1500_RW_PORT_A_PATTERN_MASK,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternMask,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the pattern transition register */
+ /* of port 1 */
+ outb(APCI1500_RW_PORT_A_PATTERN_TRANSITION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternTransition,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ /* Selects the mode specification mask */
+ /* register of port 1 */
+ outb(APCI1500_RW_PORT_A_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue =
+ inb(devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
- /* Port A new mode */
+ /* Selects the mode specification mask */
+ /* register of port 1 */
+ outb(APCI1500_RW_PORT_A_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue = (i_RegValue & 0xF9) | data[1] | 0x9;
- outb(i_RegValue,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Port A new mode */
- i_Event1Status = 1;
+ i_RegValue = (i_RegValue & 0xF9) | data[1] | 0x9;
+ outb(i_RegValue,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ i_Event1Status = 1;
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port A */
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- } else {
- dev_warn(dev->hw_dev,
- "The choice for interrupt logic does not exist\n");
- return -EINVAL;
- }
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port A */
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
}
/* Test if event setting for port 2 */
if (data[0] == 2) {
/* Test the event logic */
- if (data[1] == APCI1500_OR) {
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port B */
- outb(0x74,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the mode specification mask */
- /* register of port B */
- outb(APCI1500_RW_PORT_B_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue =
- inb(devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
-
- /* Selects the mode specification mask */
- /* register of port B */
- outb(APCI1500_RW_PORT_B_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue = i_RegValue & 0xF9;
- outb(i_RegValue,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
-
- /* Selects error channels 1 and 2 */
-
- i_PatternMask = (i_PatternMask | 0xC0);
- i_PatternPolarity = (i_PatternPolarity | 0xC0);
- i_PatternTransition = (i_PatternTransition | 0xC0);
-
- /* Selects the polarity register of port 2 */
- outb(APCI1500_RW_PORT_B_PATTERN_POLARITY,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternPolarity,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the pattern transition register */
- /* of port 2 */
- outb(APCI1500_RW_PORT_B_PATTERN_TRANSITION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternTransition,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the pattern Mask register */
- /* of port 2 */
-
- outb(APCI1500_RW_PORT_B_PATTERN_MASK,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- outb(i_PatternMask,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
-
- /* Selects the mode specification mask */
- /* register of port 2 */
- outb(APCI1500_RW_PORT_B_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue =
- inb(devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the mode specification mask */
- /* register of port 2 */
- outb(APCI1500_RW_PORT_B_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue = (i_RegValue & 0xF9) | 4;
- outb(i_RegValue,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
-
- i_Event2Status = 1;
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port B */
-
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- } else {
+ if (data[1] != APCI1500_OR) {
dev_warn(dev->hw_dev,
"The choice for interrupt logic does not exist\n");
return -EINVAL;
}
+
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port B */
+ outb(0x74,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the mode specification mask */
+ /* register of port B */
+ outb(APCI1500_RW_PORT_B_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue =
+ inb(devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ /* Selects the mode specification mask */
+ /* register of port B */
+ outb(APCI1500_RW_PORT_B_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue = i_RegValue & 0xF9;
+ outb(i_RegValue,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ /* Selects error channels 1 and 2 */
+
+ i_PatternMask = (i_PatternMask | 0xC0);
+ i_PatternPolarity = (i_PatternPolarity | 0xC0);
+ i_PatternTransition = (i_PatternTransition | 0xC0);
+
+ /* Selects the polarity register of port 2 */
+ outb(APCI1500_RW_PORT_B_PATTERN_POLARITY,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternPolarity,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the pattern transition register */
+ /* of port 2 */
+ outb(APCI1500_RW_PORT_B_PATTERN_TRANSITION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternTransition,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the pattern Mask register */
+ /* of port 2 */
+
+ outb(APCI1500_RW_PORT_B_PATTERN_MASK,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ outb(i_PatternMask,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ /* Selects the mode specification mask */
+ /* register of port 2 */
+ outb(APCI1500_RW_PORT_B_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue =
+ inb(devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the mode specification mask */
+ /* register of port 2 */
+ outb(APCI1500_RW_PORT_B_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue = (i_RegValue & 0xF9) | 4;
+ outb(i_RegValue,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+
+ i_Event2Status = 1;
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port B */
+
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
}
return insn->n;
}
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI1500_StartStopInputEvent |
| (struct comedi_device *dev,struct comedi_subdevice *s, |
| struct comedi_insn *insn,unsigned int *data) |
+----------------------------------------------------------------------------+
| Task : Allows or disallows a port event |
+----------------------------------------------------------------------------+
| Input Parameters : struct comedi_device *dev : Driver handle |
| unsigned int ui_Channel : Channel number to read |
| unsigned int *data : Data Pointer to read status |
| data[0] :0 Start input event
| 1 Stop input event
| data[1] :No of port (1 or 2)
+----------------------------------------------------------------------------+
| Output Parameters : -- |
+----------------------------------------------------------------------------+
| Return Value : TRUE : No error occur |
| : FALSE : Error occur. Return the error |
| |
+----------------------------------------------------------------------------+
*/
static int i_APCI1500_StartStopInputEvent(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct addi_private *devpriv = dev->private;
int i_Event1InterruptStatus = 0, i_Event2InterruptStatus =
0, i_RegValue;
switch (data[0]) {
case START:
- /* Tests the port number */
-
- if (data[1] == 1 || data[1] == 2) {
- /* Test if port 1 selected */
+ /* Test if port 1 selected */
+ if (data[1] == 1) {
+ /* Test if event initialised */
+ if (i_Event1Status != 1) {
+ dev_warn(dev->hw_dev,
+ "Event 1 not initialised\n");
+ return -EINVAL;
+ }
- if (data[1] == 1) {
- /* Test if event initialised */
- if (i_Event1Status == 1) {
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port A */
- outb(0xF0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the command and status register of */
- /* port 1 */
- outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Allows the pattern interrupt */
- outb(0xC0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port A */
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_Event1InterruptStatus = 1;
- outb(APCI1500_RW_PORT_A_SPECIFICATION,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_RegValue =
- inb(devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port A */
+ outb(0xF0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the command and status register of */
+ /* port 1 */
+ outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Allows the pattern interrupt */
+ outb(0xC0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port A */
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_Event1InterruptStatus = 1;
+ outb(APCI1500_RW_PORT_A_SPECIFICATION,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_RegValue =
+ inb(devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the master interrupt control register */
- outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Authorizes the main interrupt on the board */
- outb(0xD0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the master interrupt control register */
+ outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Authorizes the main interrupt on the board */
+ outb(0xD0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ } else if (data[1] == 2) {
- } else {
- dev_warn(dev->hw_dev,
- "Event 1 not initialised\n");
- return -EINVAL;
- }
+ if (i_Event2Status != 1) {
+ dev_warn(dev->hw_dev,
+ "Event 2 not initialised\n");
+ return -EINVAL;
}
- if (data[1] == 2) {
- if (i_Event2Status == 1) {
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port B */
- outb(0x74,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the command and status register of */
- /* port 2 */
- outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Allows the pattern interrupt */
- outb(0xC0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port B */
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port B */
+ outb(0x74,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the command and status register of */
+ /* port 2 */
+ outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Allows the pattern interrupt */
+ outb(0xC0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port B */
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the master interrupt control register */
- outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Authorizes the main interrupt on the board */
- outb(0xD0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_Event2InterruptStatus = 1;
- } else {
- dev_warn(dev->hw_dev,
- "Event 2 not initialised\n");
- return -EINVAL;
- }
- }
+ /* Selects the master interrupt control register */
+ outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Authorizes the main interrupt on the board */
+ outb(0xD0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_Event2InterruptStatus = 1;
} else {
dev_warn(dev->hw_dev,
"The port parameter is in error\n");
return -EINVAL;
}
break;
case STOP:
- /* Tests the port number */
+ /* Test if port 1 selected */
- if (data[1] == 1 || data[1] == 2) {
- /* Test if port 1 selected */
-
- if (data[1] == 1) {
- /* Test if event initialised */
- if (i_Event1Status == 1) {
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port A */
- outb(0xF0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the command and status register of */
- /* port 1 */
- outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Inhibits the pattern interrupt */
- outb(0xE0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port A */
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_Event1InterruptStatus = 0;
- } else {
- dev_warn(dev->hw_dev,
- "Event 1 not initialised\n");
- return -EINVAL;
- }
+ if (data[1] == 1) {
+ /* Test if event initialised */
+ if (i_Event1Status != 1) {
+ dev_warn(dev->hw_dev,
+ "Event 1 not initialised\n");
+ return -EINVAL;
}
- if (data[1] == 2) {
- /* Test if event initialised */
- if (i_Event2Status == 1) {
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Disable Port B */
- outb(0x74,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the command and status register of */
- /* port 2 */
- outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Inhibits the pattern interrupt */
- outb(0xE0,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
- outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
- /* Enable Port B */
- outb(0xF4,
- devpriv->iobase +
- APCI1500_Z8536_CONTROL_REGISTER);
- i_Event2InterruptStatus = 0;
- } else {
- dev_warn(dev->hw_dev,
- "Event 2 not initialised\n");
- return -EINVAL;
- }
+
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port A */
+ outb(0xF0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the command and status register of */
+ /* port 1 */
+ outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Inhibits the pattern interrupt */
+ outb(0xE0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port A */
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_Event1InterruptStatus = 0;
+ } else if (data[1] == 2) {
+ /* Test if event initialised */
+ if (i_Event2Status != 1) {
+ dev_warn(dev->hw_dev,
+ "Event 2 not initialised\n");
+ return -EINVAL;
}
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Disable Port B */
+ outb(0x74,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the command and status register of */
+ /* port 2 */
+ outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Inhibits the pattern interrupt */
+ outb(0xE0,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ /* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
+ outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+ /* Enable Port B */
+ outb(0xF4,
+ devpriv->iobase +
+ APCI1500_Z8536_CONTROL_REGISTER);
+ i_Event2InterruptStatus = 0;
} else {
dev_warn(dev->hw_dev,
"The port parameter is in error\n");
return -EINVAL;
}
break;
default:
dev_warn(dev->hw_dev,
"The option of START/STOP logic does not exist\n");
return -EINVAL;
}
return insn->n;
}
/*
+----------------------------------------------------------------------------+
| Function Name : int i_APCI1500_Initialisation |
| (struct comedi_device *dev,struct comedi_subdevice *s, |
| struct comedi_insn *insn,unsigned int *data) |
--
1.8.5.3
--
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