diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-05 08:04:41 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-06 08:40:18 +0200 |
| commit | ec2fae2558ba6b7b166db20901545cab7e41a050 (patch) | |
| tree | 12e4ba4bfbfdf5a9082d29a289b6c3a11c399c73 /include/drm/drm_fourcc.h | |
| parent | 0e94043ee1d98d5112aa4e1d68733b0197dfdafa (diff) | |
| download | linux-ec2fae2558ba6b7b166db20901545cab7e41a050.tar.gz linux-ec2fae2558ba6b7b166db20901545cab7e41a050.tar.bz2 linux-ec2fae2558ba6b7b166db20901545cab7e41a050.zip | |
drm: byteorder: add DRM_FORMAT_HOST_*
Add fourcc variants in host byte order. With these at hand we don't
need #ifdefs in drivers which support framebuffers in cpu endianess.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180905060445.15008-3-kraxel@redhat.com
Diffstat (limited to 'include/drm/drm_fourcc.h')
| -rw-r--r-- | include/drm/drm_fourcc.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index f9c15845f465..fac831c40106 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -25,6 +25,28 @@ #include <linux/types.h> #include <uapi/drm/drm_fourcc.h> +/* + * DRM formats are little endian. Define host endian variants for the + * most common formats here, to reduce the #ifdefs needed in drivers. + * + * Note that the DRM_FORMAT_BIG_ENDIAN flag should only be used in + * case the format can't be specified otherwise, so we don't end up + * with two values describing the same format. + */ +#ifdef __BIG_ENDIAN +# define DRM_FORMAT_HOST_XRGB1555 (DRM_FORMAT_XRGB1555 | \ + DRM_FORMAT_BIG_ENDIAN) +# define DRM_FORMAT_HOST_RGB565 (DRM_FORMAT_RGB565 | \ + DRM_FORMAT_BIG_ENDIAN) +# define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_BGRX8888 +# define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_BGRA8888 +#else +# define DRM_FORMAT_HOST_XRGB1555 DRM_FORMAT_XRGB1555 +# define DRM_FORMAT_HOST_RGB565 DRM_FORMAT_RGB565 +# define DRM_FORMAT_HOST_XRGB8888 DRM_FORMAT_XRGB8888 +# define DRM_FORMAT_HOST_ARGB8888 DRM_FORMAT_ARGB8888 +#endif + struct drm_device; struct drm_mode_fb_cmd2; |