target/linux/bcm27xx/patches-6.1/950-0933-drm-vc4-hvs-More-logging-for-dlist-generation.patch

   1 From 4ebd8283403daf5507e5aafb42fe3e4c7612eb14 Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Wed, 22 Mar 2023 09:51:51 +0100
   4 Subject: [PATCH] drm/vc4: hvs: More logging for dlist generation
   5
   6 DLIST generation can get pretty tricky and there's not a lot of debug in
   7 the driver to help. Let's add a few more to track the generated DLIST
   8 size.
   9
  10 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  11 ---
  12  drivers/gpu/drm/vc4/vc4_hvs.c | 15 +++++++++++++--
  13  1 file changed, 13 insertions(+), 2 deletions(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_hvs.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_hvs.c
  17 @@ -826,11 +826,22 @@ int vc4_hvs_atomic_check(struct drm_crtc
  18         if (hweight32(crtc_state->connector_mask) > 1)
  19                 return -EINVAL;
  20
  21 -       drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state)
  22 -               dlist_count += vc4_plane_dlist_size(plane_state);
  23 +       drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) {
  24 +               u32 plane_dlist_count = vc4_plane_dlist_size(plane_state);
  25 +
  26 +               drm_dbg_driver(dev, "[CRTC:%d:%s] Found [PLANE:%d:%s] with DLIST size: %u\n",
  27 +                              crtc->base.id, crtc->name,
  28 +                              plane->base.id, plane->name,
  29 +                              plane_dlist_count);
  30 +
  31 +               dlist_count += plane_dlist_count;
  32 +       }
  33
  34         dlist_count++; /* Account for SCALER_CTL0_END. */
  35
  36 +       drm_dbg_driver(dev, "[CRTC:%d:%s] Allocating DLIST block with size: %u\n",
  37 +                      crtc->base.id, crtc->name, dlist_count);
  38 +
  39         alloc = vc4_hvs_alloc_dlist_entry(vc4->hvs, vc4_state->assigned_channel, dlist_count);
  40         if (IS_ERR(alloc))
  41                 return PTR_ERR(alloc);