diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index eb17d3d7d3c6..91398230d408 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -114,25 +114,7 @@ void amdgpu_dm_plane_fill_blending_from_plane_state(const struct drm_plane_state
 
 	if (plane_state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI ||
 		plane_state->pixel_blend_mode == DRM_MODE_BLEND_COVERAGE) {
-		static const uint32_t alpha_formats[] = {
-			DRM_FORMAT_ARGB8888,
-			DRM_FORMAT_RGBA8888,
-			DRM_FORMAT_ABGR8888,
-			DRM_FORMAT_ARGB2101010,
-			DRM_FORMAT_ABGR2101010,
-			DRM_FORMAT_ARGB16161616,
-			DRM_FORMAT_ABGR16161616,
-			DRM_FORMAT_ARGB16161616F,
-		};
-		uint32_t format = plane_state->fb->format->format;
-		unsigned int i;
-
-		for (i = 0; i < ARRAY_SIZE(alpha_formats); ++i) {
-			if (format == alpha_formats[i]) {
-				*per_pixel_alpha = true;
-				break;
-			}
-		}
+		*per_pixel_alpha = plane_state->fb->format->has_alpha;
 
 		if (*per_pixel_alpha && plane_state->pixel_blend_mode == DRM_MODE_BLEND_COVERAGE)
 			*pre_multiplied_alpha = false;