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-rw-r--r--shared-core/mach64_irq.c45
1 files changed, 31 insertions, 14 deletions
diff --git a/shared-core/mach64_irq.c b/shared-core/mach64_irq.c
index 2d522a6c..57879e8d 100644
--- a/shared-core/mach64_irq.c
+++ b/shared-core/mach64_irq.c
@@ -71,11 +71,10 @@ irqreturn_t mach64_driver_irq_handler(DRM_IRQ_ARGS)
u32 mach64_get_vblank_counter(struct drm_device * dev, int crtc)
{
const drm_mach64_private_t *const dev_priv = dev->dev_private;
-
- if (crtc != 0) {
+
+ if (crtc != 0)
return 0;
- }
-
+
return atomic_read(&dev_priv->vbl_received);
}
@@ -83,14 +82,15 @@ int mach64_enable_vblank(struct drm_device * dev, int crtc)
{
drm_mach64_private_t *dev_priv = dev->dev_private;
u32 status = MACH64_READ(MACH64_CRTC_INT_CNTL);
-
+
if (crtc != 0) {
- DRM_ERROR("tried to enable vblank on non-existent crtc %d\n", crtc);
- return 0;
+ DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
+ crtc);
+ return -EINVAL;
}
-
+
DRM_DEBUG("before enable vblank CRTC_INT_CTNL: 0x%08x\n", status);
-
+
/* Turn on VBLANK interrupt */
MACH64_WRITE(MACH64_CRTC_INT_CNTL, MACH64_READ(MACH64_CRTC_INT_CNTL)
| MACH64_CRTC_VBLANK_INT_EN);
@@ -98,12 +98,31 @@ int mach64_enable_vblank(struct drm_device * dev, int crtc)
return 0;
}
-
void mach64_disable_vblank(struct drm_device * dev, int crtc)
{
+ if (crtc != 0) {
+ DRM_ERROR("tried to disable vblank on non-existent crtc %d\n",
+ crtc);
+ return;
+ }
+
+ /*
+ * FIXME: implement proper interrupt disable by using the vblank
+ * counter register (if available).
+ */
+}
+
+static void mach64_disable_vblank_local(struct drm_device * dev, int crtc)
+{
drm_mach64_private_t *dev_priv = dev->dev_private;
u32 status = MACH64_READ(MACH64_CRTC_INT_CNTL);
+ if (crtc != 0) {
+ DRM_ERROR("tried to disable vblank on non-existent crtc %d\n",
+ crtc);
+ return;
+ }
+
DRM_DEBUG("before disable vblank CRTC_INT_CTNL: 0x%08x\n", status);
/* Disable and clear VBLANK interrupt */
@@ -111,8 +130,6 @@ void mach64_disable_vblank(struct drm_device * dev, int crtc)
| MACH64_CRTC_VBLANK_INT);
}
-/* drm_dma.h hooks
-*/
void mach64_driver_irq_preinstall(struct drm_device * dev)
{
drm_mach64_private_t *dev_priv = dev->dev_private;
@@ -121,7 +138,7 @@ void mach64_driver_irq_preinstall(struct drm_device * dev)
DRM_DEBUG("before install CRTC_INT_CTNL: 0x%08x\n", status);
- mach64_disable_vblank(dev,0);
+ mach64_disable_vblank_local(dev, 0);
}
int mach64_driver_irq_postinstall(struct drm_device * dev)
@@ -135,7 +152,7 @@ void mach64_driver_irq_uninstall(struct drm_device * dev)
if (!dev_priv)
return;
- mach64_disable_vblank(dev, 0);
+ mach64_disable_vblank_local(dev, 0);
DRM_DEBUG("after uninstall CRTC_INT_CTNL: 0x%08x\n",
MACH64_READ(MACH64_CRTC_INT_CNTL));