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>

1 files changed, 1 insertions, 0 deletions

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);