target/linux/bcm27xx/patches-6.1/950-0983-drm-vc4-tests-Add-function-to-lookup-a-plane-for-a-C.patch

   1 From 3320e449e40eeb49b601dcbbd4bd72b8cb8f3054 Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Fri, 14 Apr 2023 11:26:58 +0200
   4 Subject: [PATCH] drm/vc4: tests: Add function to lookup a plane for a CRTC
   5
   6 Some tests will need to find a plane to run a test on for a given CRTC.
   7 Let's create a small helper to do that.
   8
   9 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  10 ---
  11  drivers/gpu/drm/vc4/tests/vc4_mock.h | 14 ++++++++++++++
  12  1 file changed, 14 insertions(+)
  13
  14 --- a/drivers/gpu/drm/vc4/tests/vc4_mock.h
  15 +++ b/drivers/gpu/drm/vc4/tests/vc4_mock.h
  16 @@ -21,6 +21,20 @@ struct drm_crtc *vc4_find_crtc_for_encod
  17         return NULL;
  18  }
  19
  20 +static inline
  21 +struct drm_plane *vc4_mock_find_plane_for_crtc(struct kunit *test,
  22 +                                              struct drm_crtc *crtc)
  23 +{
  24 +       struct drm_device *drm = crtc->dev;
  25 +       struct drm_plane *plane;
  26 +
  27 +       drm_for_each_plane(plane, drm)
  28 +               if (plane->possible_crtcs & drm_crtc_mask(crtc))
  29 +                       return plane;
  30 +
  31 +       return NULL;
  32 +}
  33 +
  34  struct vc4_dummy_plane {
  35         struct vc4_plane plane;
  36  };