summaryrefslogtreecommitdiffstats
path: root/drivers/char/drm/via_irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/drm/via_irq.c')
-rw-r--r--drivers/char/drm/via_irq.c81
1 files changed, 34 insertions, 47 deletions
diff --git a/drivers/char/drm/via_irq.c b/drivers/char/drm/via_irq.c
index f1ab6fc..c6bb978 100644
--- a/drivers/char/drm/via_irq.c
+++ b/drivers/char/drm/via_irq.c
@@ -92,17 +92,8 @@ static int via_irqmap_unichrome[] = {-1, -1, -1, 0, -1, 1};
static unsigned time_diff(struct timeval *now, struct timeval *then)
{
return (now->tv_usec >= then->tv_usec) ?
- now->tv_usec - then->tv_usec :
- 1000000 - (then->tv_usec - now->tv_usec);
-}
-
-u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
-{
- drm_via_private_t *dev_priv = dev->dev_private;
- if (crtc != 0)
- return 0;
-
- return atomic_read(&dev_priv->vbl_received);
+ now->tv_usec - then->tv_usec :
+ 1000000 - (then->tv_usec - now->tv_usec);
}
irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
@@ -117,8 +108,8 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
status = VIA_READ(VIA_REG_INTERRUPT);
if (status & VIA_IRQ_VBLANK_PENDING) {
- atomic_inc(&dev_priv->vbl_received);
- if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
+ atomic_inc(&dev->vbl_received);
+ if (!(atomic_read(&dev->vbl_received) & 0x0F)) {
do_gettimeofday(&cur_vblank);
if (dev_priv->last_vblank_valid) {
dev_priv->usec_per_vblank =
@@ -128,11 +119,12 @@ irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
dev_priv->last_vblank = cur_vblank;
dev_priv->last_vblank_valid = 1;
}
- if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
+ if (!(atomic_read(&dev->vbl_received) & 0xFF)) {
DRM_DEBUG("US per vblank is: %u\n",
dev_priv->usec_per_vblank);
}
- drm_handle_vblank(dev, 0);
+ DRM_WAKEUP(&dev->vbl_queue);
+ drm_vbl_send_signals(dev);
handled = 1;
}
@@ -171,34 +163,31 @@ static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv)
}
}
-int via_enable_vblank(struct drm_device *dev, int crtc)
+int via_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
{
- drm_via_private_t *dev_priv = dev->dev_private;
- u32 status;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ unsigned int cur_vblank;
+ int ret = 0;
- if (crtc != 0) {
- DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc);
+ DRM_DEBUG("\n");
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
return -EINVAL;
}
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status & VIA_IRQ_VBLANK_ENABLE);
+ viadrv_acknowledge_irqs(dev_priv);
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+ /* 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...
+ */
- return 0;
-}
+ DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+ (((cur_vblank = atomic_read(&dev->vbl_received)) -
+ *sequence) <= (1 << 23)));
-void via_disable_vblank(struct drm_device *dev, int crtc)
-{
- drm_via_private_t *dev_priv = dev->dev_private;
-
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
-
- if (crtc != 0)
- DRM_ERROR("%s: bad crtc %d\n", __FUNCTION__, crtc);
+ *sequence = cur_vblank;
+ return ret;
}
static int
@@ -303,25 +292,23 @@ void via_driver_irq_preinstall(struct drm_device * dev)
}
}
-int via_driver_irq_postinstall(struct drm_device * dev)
+void via_driver_irq_postinstall(struct drm_device * dev)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
u32 status;
- DRM_DEBUG("via_driver_irq_postinstall\n");
- if (!dev_priv)
- return -EINVAL;
+ DRM_DEBUG("\n");
+ if (dev_priv) {
+ status = VIA_READ(VIA_REG_INTERRUPT);
+ VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
+ | dev_priv->irq_enable_mask);
- drm_vblank_init(dev, 1);
- status = VIA_READ(VIA_REG_INTERRUPT);
- VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
- | dev_priv->irq_enable_mask);
+ /* Some magic, oh for some data sheets ! */
- /* Some magic, oh for some data sheets ! */
- VIA_WRITE8(0x83d4, 0x11);
- VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+ VIA_WRITE8(0x83d4, 0x11);
+ VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
- return 0;
+ }
}
void via_driver_irq_uninstall(struct drm_device * dev)
OpenPOWER on IntegriCloud