drm/omap: print warning when rotating non-TILER fb

Print a warning when the user tries to rotate a non-TILER framebuffer.

Also set the rotation to 0, to avoid constant flood of the warnings in
case of page flipping.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c
index d2b8c49..8b01960 100644 (file)
--- a/drivers/gpu/drm/omapdrm/omap_fb.c
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -218,6 +218,20 @@ void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
                info->rotation_type = OMAP_DSS_ROT_TILER;
                info->screen_width  = omap_gem_tiled_stride(plane->bo, orient);
        } else {
+               switch (win->rotation & 0xf) {
+               case 0:
+               case BIT(DRM_ROTATE_0):
+                       /* OK */
+                       break;
+
+               default:
+                       dev_warn(fb->dev->dev,
+                               "rotation '%d' ignored for non-tiled fb\n",
+                               win->rotation);
+                       win->rotation = 0;
+                       break;
+               }
+
                info->paddr         = get_linear_addr(plane, format, 0, x, y);
                info->rotation_type = OMAP_DSS_ROT_DMA;
                info->screen_width  = plane->pitch;