[PATCH] drm/vmwgfx: Add blend mode property

[Ian Forbes <ian.forbes@broadcom.com>]

This stops the log spamming introduced by the referenced fixes commit.

Fixes: 860e748bddcc ("drm: ensure blend mode supported if pixel format with alpha exposed")
Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 1b407b61f683..c06548960008 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -20,10 +20,17 @@
 #include <drm/drm_rect.h>
 #include <drm/drm_sysfs.h>
 #include <drm/drm_edid.h>
+#include <drm/drm_blend.h>
 
 void vmw_du_init(struct vmw_display_unit *du)
 {
 	vmw_vkms_crtc_init(&du->crtc);
+	drm_plane_create_blend_mode_property(&du->primary,
+					     BIT(DRM_MODE_BLEND_PIXEL_NONE));
+	// Check that the cursor plane was actually initialized
+	if (du->crtc.cursor == &du->cursor.base)
+		drm_plane_create_blend_mode_property(&du->cursor.base,
+						     BIT(DRM_MODE_BLEND_PREMULTI));
 }
 
 void vmw_du_cleanup(struct vmw_display_unit *du)
-- 
2.55.0