+
+static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
+ struct drm_file *file)
+{
+ struct drm_tegra_gem_set_tiling *args = data;
+ enum tegra_bo_tiling_mode mode;
+ struct drm_gem_object *gem;
+ unsigned long value = 0;
+ struct tegra_bo *bo;
+
+ switch (args->mode) {
+ case DRM_TEGRA_GEM_TILING_MODE_PITCH:
+ mode = TEGRA_BO_TILING_MODE_PITCH;
+
+ if (args->value != 0)
+ return -EINVAL;
+
+ break;
+
+ case DRM_TEGRA_GEM_TILING_MODE_TILED:
+ mode = TEGRA_BO_TILING_MODE_TILED;
+
+ if (args->value != 0)
+ return -EINVAL;
+
+ break;
+
+ case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
+ mode = TEGRA_BO_TILING_MODE_BLOCK;
+
+ if (args->value > 5)
+ return -EINVAL;
+
+ value = args->value;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ gem = drm_gem_object_lookup(drm, file, args->handle);
+ if (!gem)
+ return -ENOENT;
+
+ bo = to_tegra_bo(gem);
+
+ bo->tiling.mode = mode;
+ bo->tiling.value = value;
+
+ drm_gem_object_unreference(gem);
+
+ return 0;
+}
+
+static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
+ struct drm_file *file)
+{
+ struct drm_tegra_gem_get_tiling *args = data;
+ struct drm_gem_object *gem;
+ struct tegra_bo *bo;
+ int err = 0;
+
+ gem = drm_gem_object_lookup(drm, file, args->handle);
+ if (!gem)
+ return -ENOENT;
+
+ bo = to_tegra_bo(gem);
+
+ switch (bo->tiling.mode) {
+ case TEGRA_BO_TILING_MODE_PITCH:
+ args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
+ args->value = 0;
+ break;
+
+ case TEGRA_BO_TILING_MODE_TILED:
+ args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
+ args->value = 0;
+ break;
+
+ case TEGRA_BO_TILING_MODE_BLOCK:
+ args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
+ args->value = bo->tiling.value;
+ break;
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ drm_gem_object_unreference(gem);
+
+ return err;
+}