From: Thierry Reding treding@nvidia.com
When working with framebuffer modifiers, it can be useful to extract the vendor identifier or check a modifier against a given vendor identifier. Add one macro that extracts the vendor identifier and a helper to check a modifier against a given vendor identifier.
Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Acked-by: Daniel Stone daniels@collabora.com Signed-off-by: Thierry Reding treding@nvidia.com --- include/uapi/drm/drm_fourcc.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index f7156322aba5..36771d8ffc4a 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -373,6 +373,12 @@ extern "C" {
#define DRM_FORMAT_RESERVED ((1ULL << 56) - 1)
+#define fourcc_mod_get_vendor(modifier) \ + (((modifier) >> 56) & 0xff) + +#define fourcc_mod_is_vendor(modifier, vendor) \ + (fourcc_mod_get_vendor(modifier) == DRM_FORMAT_MOD_VENDOR_## vendor) + #define fourcc_mod_code(vendor, val) \ ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))