target/linux/bcm27xx/patches-5.10/950-0403-drm-vc4-Make-normalize_zpos-conditional-on-using-fkm.patch

   1 From a384e2c5d6e72e08e3d183b58ca8697f6665a793 Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Tue, 15 Dec 2020 16:26:51 +0000
   4 Subject: [PATCH] drm/vc4: Make normalize_zpos conditional on using
   5  fkms
   6
   7 Eric's view was that there was no point in having zpos
   8 support on vc4 as all the planes had the same functionality.
   9
  10 Can be later squashed into (and fixes):
  11 drm/vc4: Add firmware-kms mode
  12
  13 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
  14 ---
  15  drivers/gpu/drm/vc4/vc4_kms.c | 3 ++-
  16  1 file changed, 2 insertions(+), 1 deletion(-)
  17
  18 --- a/drivers/gpu/drm/vc4/vc4_kms.c
  19 +++ b/drivers/gpu/drm/vc4/vc4_kms.c
  20 @@ -923,7 +923,8 @@ int vc4_kms_load(struct drm_device *dev)
  21         dev->mode_config.preferred_depth = 24;
  22         dev->mode_config.async_page_flip = true;
  23         dev->mode_config.allow_fb_modifiers = true;
  24 -       dev->mode_config.normalize_zpos = true;
  25 +       if (vc4->firmware_kms)
  26 +               dev->mode_config.normalize_zpos = true;
  27
  28         ret = vc4_ctm_obj_init(vc4);
  29         if (ret)