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drm/vc4: plane: Add more debugging for LBM allocation

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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>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240621152055.4180873-12-dave.stevenson@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Maxime Ripard 2024-06-21 16:20:35 +01:00 committed by Dave Stevenson
parent 6184b9446d
commit f18029bdf2
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/vc4/vc4_plane.c
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@ -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;