drm/arm: malidp: Use fourcc_mod_is_vendor() helper

Rather than open-coding the vendor extraction operation, use the newly
introduced helper macro.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210610111236.3814211-2-thierry.reding@gmail.com

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 8c2ab3d..0562bda 100644 (file)
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -165,7 +165,7 @@ bool malidp_format_mod_supported(struct drm_device *drm,
                return !malidp_hw_format_is_afbc_only(format);
        }
 
-       if ((modifier >> 56) != DRM_FORMAT_MOD_VENDOR_ARM) {
+       if (!fourcc_mod_is_vendor(modifier, ARM)) {
                DRM_ERROR("Unknown modifier (not Arm)\n");
                return false;
        }