git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From b3b3d12cf0734318a0fed0b33e13d714188369db Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Tue, 22 Oct 2024 17:17:31 +0100
   4 Subject: [PATCH] drm: Add a DRM_MODE_TRANSPOSE option to the DRM rotation
   5  property
   6
   7 Some hardware will implement transpose as a rotation operation,
   8 which when combined with X and Y reflect can result in a rotation,
   9 but is a discrete operation in its own right.
  10
  11 Add an option for transpose only.
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  14 ---
  15  drivers/gpu/drm/drm_blend.c | 3 +++
  16  include/uapi/drm/drm_mode.h | 1 +
  17  2 files changed, 4 insertions(+)
  18
  19 --- a/drivers/gpu/drm/drm_blend.c
  20 +++ b/drivers/gpu/drm/drm_blend.c
  21 @@ -263,6 +263,8 @@ EXPORT_SYMBOL(drm_plane_create_alpha_pro
  22   *     "reflect-x"
  23   * DRM_MODE_REFLECT_Y:
  24   *     "reflect-y"
  25 + * DRM_MODE_TRANSPOSE:
  26 + *     "transpose"
  27   *
  28   * Rotation is the specified amount in degrees in counter clockwise direction,
  29   * the X and Y axis are within the source rectangle, i.e.  the X/Y axis before
  30 @@ -280,6 +282,7 @@ int drm_plane_create_rotation_property(s
  31                 { __builtin_ffs(DRM_MODE_ROTATE_270) - 1, "rotate-270" },
  32                 { __builtin_ffs(DRM_MODE_REFLECT_X) - 1,  "reflect-x" },
  33                 { __builtin_ffs(DRM_MODE_REFLECT_Y) - 1,  "reflect-y" },
  34 +               { __builtin_ffs(DRM_MODE_TRANSPOSE) - 1,  "transpose" },
  35         };
  36         struct drm_property *prop;
  37
  38 --- a/include/uapi/drm/drm_mode.h
  39 +++ b/include/uapi/drm/drm_mode.h
  40 @@ -203,6 +203,7 @@ extern "C" {
  41   */
  42  #define DRM_MODE_REFLECT_X      (1<<4)
  43  #define DRM_MODE_REFLECT_Y      (1<<5)
  44 +#define DRM_MODE_TRANSPOSE      (1<<6)
  45
  46  /*
  47   * DRM_MODE_REFLECT_MASK