drm/tegra: fb: Properly support linear modifier

Instead of relying on the tiling attached to a buffer object, make sure
to set the proper tiling for linear buffers.

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

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 0786159edef3..e69434909a42 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -55,6 +55,11 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
         uint64_t modifier = fb->base.modifier;
 
         switch (modifier) {
+        case DRM_FORMAT_MOD_LINEAR:
+                tiling->mode = TEGRA_BO_TILING_MODE_PITCH;
+                tiling->value = 0;
+                break;
+
         case DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED:
                 tiling->mode = TEGRA_BO_TILING_MODE_TILED;
                 tiling->value = 0;
@@ -91,9 +96,7 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
                 break;
 
         default:
-                /* TODO: handle YUV formats? */
-                *tiling = fb->planes[0]->tiling;
-                break;
+                return -EINVAL;
         }
 
         return 0;