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path: root/drivers/char/drm/mga_irq.c
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Diffstat (limited to 'drivers/char/drm/mga_irq.c')
-rw-r--r--drivers/char/drm/mga_irq.c42
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/char/drm/mga_irq.c b/drivers/char/drm/mga_irq.c
index 52eaa4e788f..eb964402417 100644
--- a/drivers/char/drm/mga_irq.c
+++ b/drivers/char/drm/mga_irq.c
@@ -1,7 +1,7 @@
/* mga_irq.c -- IRQ handling for radeon -*- linux-c -*-
*
* Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
- *
+ *
* The Weather Channel (TM) funded Tungsten Graphics to develop the
* initial release of the Radeon 8500 driver under the XFree86 license.
* This notice must be preserved.
@@ -35,19 +35,18 @@
#include "mga_drm.h"
#include "mga_drv.h"
-irqreturn_t mga_driver_irq_handler( DRM_IRQ_ARGS )
+irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS)
{
drm_device_t *dev = (drm_device_t *) arg;
- drm_mga_private_t *dev_priv =
- (drm_mga_private_t *)dev->dev_private;
+ drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
int status;
int handled = 0;
status = MGA_READ(MGA_STATUS);
/* VBLANK interrupt */
- if ( status & MGA_VLINEPEN ) {
- MGA_WRITE( MGA_ICLEAR, MGA_VLINEICLR );
+ if (status & MGA_VLINEPEN) {
+ MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
atomic_inc(&dev->vbl_received);
DRM_WAKEUP(&dev->vbl_queue);
drm_vbl_send_signals(dev);
@@ -57,15 +56,14 @@ irqreturn_t mga_driver_irq_handler( DRM_IRQ_ARGS )
/* SOFTRAP interrupt */
if (status & MGA_SOFTRAPEN) {
const u32 prim_start = MGA_READ(MGA_PRIMADDRESS);
- const u32 prim_end = MGA_READ(MGA_PRIMEND);
-
+ const u32 prim_end = MGA_READ(MGA_PRIMEND);
MGA_WRITE(MGA_ICLEAR, MGA_SOFTRAPICLR);
/* In addition to clearing the interrupt-pending bit, we
* have to write to MGA_PRIMEND to re-start the DMA operation.
*/
- if ( (prim_start & ~0x03) != (prim_end & ~0x03) ) {
+ if ((prim_start & ~0x03) != (prim_end & ~0x03)) {
MGA_WRITE(MGA_PRIMEND, prim_end);
}
@@ -74,24 +72,24 @@ irqreturn_t mga_driver_irq_handler( DRM_IRQ_ARGS )
handled = 1;
}
- if ( handled ) {
+ if (handled) {
return IRQ_HANDLED;
}
return IRQ_NONE;
}
-int mga_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
+int mga_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence)
{
unsigned int cur_vblank;
int ret = 0;
/* Assume that the user has missed the current sequence number
* by about a day rather than she wants to wait for years
- * using vertical blanks...
+ * using vertical blanks...
*/
- DRM_WAIT_ON( ret, dev->vbl_queue, 3*DRM_HZ,
- ( ( ( cur_vblank = atomic_read(&dev->vbl_received ) )
- - *sequence ) <= (1<<23) ) );
+ DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+ (((cur_vblank = atomic_read(&dev->vbl_received))
+ - *sequence) <= (1 << 23)));
*sequence = cur_vblank;
@@ -122,29 +120,29 @@ void mga_driver_irq_preinstall(drm_device_t * dev)
drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
/* Disable *all* interrupts */
- MGA_WRITE( MGA_IEN, 0 );
+ MGA_WRITE(MGA_IEN, 0);
/* Clear bits if they're already high */
- MGA_WRITE( MGA_ICLEAR, ~0 );
+ MGA_WRITE(MGA_ICLEAR, ~0);
}
void mga_driver_irq_postinstall(drm_device_t * dev)
{
drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
- DRM_INIT_WAITQUEUE( &dev_priv->fence_queue );
+ DRM_INIT_WAITQUEUE(&dev_priv->fence_queue);
/* Turn on vertical blank interrupt and soft trap interrupt. */
MGA_WRITE(MGA_IEN, MGA_VLINEIEN | MGA_SOFTRAPEN);
}
-void mga_driver_irq_uninstall( drm_device_t *dev ) {
- drm_mga_private_t *dev_priv =
- (drm_mga_private_t *)dev->dev_private;
+void mga_driver_irq_uninstall(drm_device_t * dev)
+{
+ drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
if (!dev_priv)
return;
/* Disable *all* interrupts */
MGA_WRITE(MGA_IEN, 0);
-
+
dev->irq_enabled = 0;
}