drm/i915: add GETPARAM request for page flipping
Add a GETPARAM request for checking if page flipping is supported.
Useful for the 2D driver to enable the flipping path.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index a8efe78..fe89d0c 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -810,6 +810,9 @@
case I915_PARAM_HAS_OVERLAY:
value = dev_priv->overlay ? 1 : 0;
break;
+ case I915_PARAM_HAS_PAGEFLIPPING:
+ value = 1;
+ break;
default:
DRM_DEBUG_DRIVER("Unknown parameter %d\n",
param->param);
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index c900499..1b4f3a5 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -271,6 +271,7 @@
#define I915_PARAM_HAS_GEM 5
#define I915_PARAM_NUM_FENCES_AVAIL 6
#define I915_PARAM_HAS_OVERLAY 7
+#define I915_PARAM_HAS_PAGEFLIPPING 8
typedef struct drm_i915_getparam {
int param;