1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
index 86b93dde219a..ef4754f1519b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
@@ -195,6 +195,40 @@ static struct drm_encoder_funcs exynos_encoder_funcs = {
         .destroy = exynos_drm_encoder_destroy,
 };
 
+static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
+{
+        struct drm_encoder *clone;
+        struct drm_device *dev = encoder->dev;
+        struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
+        struct exynos_drm_display_ops *display_ops =
+                                exynos_encoder->manager->display_ops;
+        unsigned int clone_mask = 0;
+        int cnt = 0;
+
+        list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
+                switch (display_ops->type) {
+                case EXYNOS_DISPLAY_TYPE_LCD:
+                case EXYNOS_DISPLAY_TYPE_HDMI:
+                        clone_mask |= (1 << (cnt++));
+                        break;
+                default:
+                        continue;
+                }
+        }
+
+        return clone_mask;
+}
+
+void exynos_drm_encoder_setup(struct drm_device *dev)
+{
+        struct drm_encoder *encoder;
+
+        DRM_DEBUG_KMS("%s\n", __FILE__);
+
+        list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+                encoder->possible_clones = exynos_drm_encoder_clones(encoder);
+}
+
 struct drm_encoder *
 exynos_drm_encoder_create(struct drm_device *dev,
                            struct exynos_drm_manager *manager,