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author=?utf-8?q?Michel_D=C3=A4nzer?= <michel@tungstengraphics.com>2006-10-24 14:28:51 +0200
committerairlied <airlied@linux.ie>2006-12-07 05:53:28 +0100
commit68815bad7239989d92f315c10d9ef65a11945a75 (patch)
tree148ae38036feb708147022a8ecc57daa1b61d9c6 /drivers/char/drm
parentdrm: add support for secondary vertical blank interrupt to DRM core (diff)
downloadlinux-68815bad7239989d92f315c10d9ef65a11945a75.tar.xz
linux-68815bad7239989d92f315c10d9ef65a11945a75.zip
drm: add support for secondary vertical blank interrupt to i915
When the vertical blank interrupt is enabled for both pipes, pipe A is considered primary and pipe B secondary. When it's only enabled for one pipe, it's always considered primary for backwards compatibility. Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm')
-rw-r--r--drivers/char/drm/i915_drv.c4
-rw-r--r--drivers/char/drm/i915_drv.h1
-rw-r--r--drivers/char/drm/i915_irq.c26
3 files changed, 27 insertions, 4 deletions
diff --git a/drivers/char/drm/i915_drv.c b/drivers/char/drm/i915_drv.c
index 8e2e6095c4b3..85bcc276f804 100644
--- a/drivers/char/drm/i915_drv.c
+++ b/drivers/char/drm/i915_drv.c
@@ -44,12 +44,14 @@ static struct drm_driver driver = {
*/
.driver_features =
DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
- DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
+ DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL |
+ DRIVER_IRQ_VBL2,
.load = i915_driver_load,
.lastclose = i915_driver_lastclose,
.preclose = i915_driver_preclose,
.device_is_agp = i915_driver_device_is_agp,
.vblank_wait = i915_driver_vblank_wait,
+ .vblank_wait2 = i915_driver_vblank_wait2,
.irq_preinstall = i915_driver_irq_preinstall,
.irq_postinstall = i915_driver_irq_postinstall,
.irq_uninstall = i915_driver_irq_uninstall,
diff --git a/drivers/char/drm/i915_drv.h b/drivers/char/drm/i915_drv.h
index fdc2bf192714..5f0c4fa04da2 100644
--- a/drivers/char/drm/i915_drv.h
+++ b/drivers/char/drm/i915_drv.h
@@ -117,6 +117,7 @@ extern int i915_irq_emit(DRM_IOCTL_ARGS);
extern int i915_irq_wait(DRM_IOCTL_ARGS);
extern int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence);
+extern int i915_driver_vblank_wait2(drm_device_t *dev, unsigned int *sequence);
extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
extern void i915_driver_irq_preinstall(drm_device_t * dev);
extern void i915_driver_irq_postinstall(drm_device_t * dev);
diff --git a/drivers/char/drm/i915_irq.c b/drivers/char/drm/i915_irq.c
index 0d4a162aa385..33d40187696a 100644
--- a/drivers/char/drm/i915_irq.c
+++ b/drivers/char/drm/i915_irq.c
@@ -60,7 +60,16 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
DRM_WAKEUP(&dev_priv->irq_queue);
if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) {
- atomic_inc(&dev->vbl_received);
+ if ((dev_priv->vblank_pipe &
+ (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B))
+ == (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) {
+ if (temp & VSYNC_PIPEA_FLAG)
+ atomic_inc(&dev->vbl_received);
+ if (temp & VSYNC_PIPEB_FLAG)
+ atomic_inc(&dev->vbl_received2);
+ } else
+ atomic_inc(&dev->vbl_received);
+
DRM_WAKEUP(&dev->vbl_queue);
drm_vbl_send_signals(dev);
}
@@ -120,7 +129,8 @@ static int i915_wait_irq(drm_device_t * dev, int irq_nr)
return ret;
}
-int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
+static int i915_driver_vblank_do_wait(drm_device_t *dev, unsigned int *sequence,
+ atomic_t *counter)
{
drm_i915_private_t *dev_priv = dev->dev_private;
unsigned int cur_vblank;
@@ -132,7 +142,7 @@ int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
}
DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
- (((cur_vblank = atomic_read(&dev->vbl_received))
+ (((cur_vblank = atomic_read(counter))
- *sequence) <= (1<<23)));
*sequence = cur_vblank;
@@ -141,6 +151,16 @@ int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
}
+int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
+{
+ return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received);
+}
+
+int i915_driver_vblank_wait2(drm_device_t *dev, unsigned int *sequence)
+{
+ return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received2);
+}
+
/* Needs the lock as it touches the ring.
*/
int i915_irq_emit(DRM_IOCTL_ARGS)