drm/i915: add HAS_BSD check to i915_getparam

This will let userland only try to use the new media decode
functionality when the appropriate kernel is present.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 6577798d344..84ce95602f0 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -744,6 +744,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
                 /* depends on GEM */
                 value = dev_priv->has_gem;
                 break;
+        case I915_PARAM_HAS_BSD:
+                value = HAS_BSD(dev);
+                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 e9168704cab..7f0028e1010 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -275,6 +275,7 @@ typedef struct drm_i915_irq_wait {
 #define I915_PARAM_HAS_OVERLAY           7
 #define I915_PARAM_HAS_PAGEFLIPPING      8
 #define I915_PARAM_HAS_EXECBUF2          9
+#define I915_PARAM_HAS_BSD               10
 
 typedef struct drm_i915_getparam {
         int param;