drm: byteorder: add DRM_FORMAT_HOST_*

#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;