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 --- include/drm/drm_fourcc.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index f9c15845f4..fac831c401 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;