drm/msm/mdp5: clip img size to src size

If fb dimensions are larger than what can be scanned out, but the src
dimensions are not, the hw can still handle this.  So clip.

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
index 81c0562..ba4ebfa 100644 (file)
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
@@ -771,8 +771,8 @@ static int mdp5_plane_mode_set(struct drm_plane *plane,
        spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 
        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe),
-                       MDP5_PIPE_SRC_IMG_SIZE_WIDTH(fb->width) |
-                       MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(fb->height));
+                       MDP5_PIPE_SRC_IMG_SIZE_WIDTH(min(fb->width, src_w)) |
+                       MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(min(fb->height, src_h)));
 
        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_SIZE(pipe),
                        MDP5_PIPE_SRC_SIZE_WIDTH(src_w) |