target/linux/brcm2708/patches-4.19/950-0735-drm-vc4-Correct-handling-of-rotation-parameter-in-fk.patch

   1 From e99a60f018524bf7b1ba382e3994c22ebcdbafe6 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Wed, 18 Sep 2019 15:49:13 +0100
   4 Subject: [PATCH] drm/vc4: Correct handling of rotation parameter in
   5  fkms
   6
   7 One bit within DRM_MODE_ROTATE_MASK will always be set to
   8 determine the base rotation 0/90/180/270, and then REFLECT_X
   9 and REFLECT_Y are on top.
  10
  11 Correct the handling which was assuming that REFLECT_[X|Y]
  12 was instead of ROTATE_x.
  13
  14 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  15 ---
  16  drivers/gpu/drm/vc4/vc4_firmware_kms.c | 37 ++++++++++----------------
  17  1 file changed, 14 insertions(+), 23 deletions(-)
  18
  19 --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  20 +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  21 @@ -79,11 +79,6 @@ struct set_plane {
  22  #define TRANSFORM_FLIP_HRIZ    BIT(16)
  23  #define TRANSFORM_FLIP_VERT    BIT(17)
  24
  25 -#define SUPPORTED_ROTATIONS    (DRM_MODE_ROTATE_0 | \
  26 -                                DRM_MODE_ROTATE_180 | \
  27 -                                DRM_MODE_REFLECT_X | \
  28 -                                DRM_MODE_REFLECT_Y)
  29 -
  30  struct mailbox_set_plane {
  31         struct rpi_firmware_property_tag_header tag;
  32         struct set_plane plane;
  33 @@ -523,7 +518,7 @@ static int vc4_plane_to_mb(struct drm_pl
  34         const struct vc_image_format *vc_fmt =
  35                                         vc4_get_vc_image_fmt(drm_fmt->format);
  36         int num_planes = fb->format->num_planes;
  37 -       unsigned int rotation = SUPPORTED_ROTATIONS;
  38 +       unsigned int rotation;
  39
  40         mb->plane.vc_image_type = vc_fmt->vc_image;
  41         mb->plane.width = fb->width;
  42 @@ -544,23 +539,16 @@ static int vc4_plane_to_mb(struct drm_pl
  43         mb->plane.is_vu = vc_fmt->is_vu;
  44         mb->plane.planes[0] = bo->paddr + fb->offsets[0];
  45
  46 -       rotation = drm_rotation_simplify(state->rotation, rotation);
  47 -
  48 -       switch (rotation) {
  49 -       default:
  50 -       case DRM_MODE_ROTATE_0:
  51 -               mb->plane.transform = TRANSFORM_NO_ROTATE;
  52 -               break;
  53 -       case DRM_MODE_ROTATE_180:
  54 -               mb->plane.transform = TRANSFORM_ROTATE_180;
  55 -               break;
  56 -       case DRM_MODE_REFLECT_X:
  57 -               mb->plane.transform = TRANSFORM_FLIP_HRIZ;
  58 -               break;
  59 -       case DRM_MODE_REFLECT_Y:
  60 -               mb->plane.transform = TRANSFORM_FLIP_VERT;
  61 -               break;
  62 -       }
  63 +       rotation = drm_rotation_simplify(state->rotation,
  64 +                                        DRM_MODE_ROTATE_0 |
  65 +                                        DRM_MODE_REFLECT_X |
  66 +                                        DRM_MODE_REFLECT_Y);
  67 +
  68 +       mb->plane.transform = TRANSFORM_NO_ROTATE;
  69 +       if (rotation & DRM_MODE_REFLECT_X)
  70 +               mb->plane.transform |= TRANSFORM_FLIP_HRIZ;
  71 +       if (rotation & DRM_MODE_REFLECT_Y)
  72 +               mb->plane.transform |= TRANSFORM_FLIP_VERT;
  73
  74         vc4_fkms_margins_adj(state, &mb->plane);
  75
  76 @@ -772,7 +760,10 @@ static struct drm_plane *vc4_fkms_plane_
  77
  78         drm_plane_create_alpha_property(plane);
  79         drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
  80 -                                          SUPPORTED_ROTATIONS);
  81 +                                          DRM_MODE_ROTATE_0 |
  82 +                                          DRM_MODE_ROTATE_180 |
  83 +                                          DRM_MODE_REFLECT_X |
  84 +                                          DRM_MODE_REFLECT_Y);
  85         drm_plane_create_color_properties(plane,
  86                                           BIT(DRM_COLOR_YCBCR_BT601) |
  87                                           BIT(DRM_COLOR_YCBCR_BT709) |