[PATCH 12/31] drm/vc4: plane: Add more debugging for LBM allocation

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

From: Maxime Ripard <maxime@cerno.tech>

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 <mripard@kernel.org>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/gpu/drm/vc4/vc4_plane.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index e4fcef11cf6f..16197c4b4b33 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -741,6 +741,7 @@ static int vc4_plane_allocate_lbm(struct drm_plane_state *state)
 {
 	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;
@@ -749,6 +750,9 @@ static int vc4_plane_allocate_lbm(struct drm_plane_state *state)
 	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;
 
-- 
2.34.1