From 164f7e94da446984f275be1c082b93243beadfba Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Wed, 22 Mar 2023 16:17:57 +0100 Subject: [PATCH] drm/vc4: plane: Add more debugging for LBM allocation LBM allocations need a different size depending on the line length, format, etc. This can get tricky, and fail. Let's add some more prints to ease the debugging when it does. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_plane.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -735,6 +735,7 @@ static int vc4_plane_allocate_lbm(struct { struct drm_device *drm = state->plane->dev; struct vc4_dev *vc4 = to_vc4_dev(drm); + struct drm_plane *plane = state->plane; struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); unsigned long irqflags; u32 lbm_size; @@ -743,6 +744,9 @@ static int vc4_plane_allocate_lbm(struct if (!lbm_size) return 0; + drm_dbg_driver(drm, "[PLANE:%d:%s] LBM Allocation Size: %u\n", + plane->base.id, plane->name, lbm_size); + if (WARN_ON(!vc4_state->lbm_offset)) return -EINVAL;