tegra: Implement drm_tegra_bo_{get,set}_tiling()

These two functions are simple wrappers around the corresponding IOCTLs
and operate on drm_tegra_bo objects.

Signed-off-by: Thierry Reding <treding@nvidia.com>

2 files changed, 61 insertions, 0 deletions

diff --git a/tegra/tegra.c b/tegra/tegra.c
index 614ab965..f8d40786 100644
--- a/tegra/tegra.c
+++ b/tegra/tegra.c
@@ -292,3 +292,54 @@ int drm_tegra_bo_set_flags(struct drm_tegra_bo *bo, uint32_t flags)
 
 	return 0;
 }
+
+drm_public
+int drm_tegra_bo_get_tiling(struct drm_tegra_bo *bo,
+			    struct drm_tegra_bo_tiling *tiling)
+{
+	struct drm_tegra_gem_get_tiling args;
+	struct drm_tegra *drm = bo->drm;
+	int err;
+
+	if (!bo)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+	args.handle = bo->handle;
+
+	err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_GET_TILING, &args,
+				  sizeof(args));
+	if (err < 0)
+		return -errno;
+
+	if (tiling) {
+		tiling->mode = args.mode;
+		tiling->value = args.value;
+	}
+
+	return 0;
+}
+
+drm_public
+int drm_tegra_bo_set_tiling(struct drm_tegra_bo *bo,
+			    const struct drm_tegra_bo_tiling *tiling)
+{
+	struct drm_tegra_gem_set_tiling args;
+	struct drm_tegra *drm = bo->drm;
+	int err;
+
+	if (!bo)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+	args.handle = bo->handle;
+	args.mode = tiling->mode;
+	args.value = tiling->value;
+
+	err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_SET_TILING, &args,
+				  sizeof(args));
+	if (err < 0)
+		return -errno;
+
+	return 0;
+}
diff --git a/tegra/tegra.h b/tegra/tegra.h
index a8624180..31b0995a 100644
--- a/tegra/tegra.h
+++ b/tegra/tegra.h
@@ -47,4 +47,14 @@ int drm_tegra_bo_unmap(struct drm_tegra_bo *bo);
 int drm_tegra_bo_get_flags(struct drm_tegra_bo *bo, uint32_t *flags);
 int drm_tegra_bo_set_flags(struct drm_tegra_bo *bo, uint32_t flags);
 
+struct drm_tegra_bo_tiling {
+	uint32_t mode;
+	uint32_t value;
+};
+
+int drm_tegra_bo_get_tiling(struct drm_tegra_bo *bo,
+			    struct drm_tegra_bo_tiling *tiling);
+int drm_tegra_bo_set_tiling(struct drm_tegra_bo *bo,
+			    const struct drm_tegra_bo_tiling *tiling);
+
 #endif /* __DRM_TEGRA_H__ */