drm/exynos/dsi: register connector if it is created after drm bind

DSI device can be attached after DRM device is registered. In such
case newly created connector must be registered by exynos_dsi.
The patch fixes exynos_drm on rinato and trats boards.

Fixes: 6afb7721e2a0 ("drm/exynos: move connector creation to attach callback")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 32f256749789..d81e62ae286a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -14,6 +14,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_atomic_helper.h>
@@ -1474,12 +1475,12 @@ static int exynos_dsi_create_connector(struct drm_encoder *encoder)
 {
         struct exynos_dsi *dsi = encoder_to_dsi(encoder);
         struct drm_connector *connector = &dsi->connector;
+        struct drm_device *drm = encoder->dev;
         int ret;
 
         connector->polled = DRM_CONNECTOR_POLL_HPD;
 
-        ret = drm_connector_init(encoder->dev, connector,
-                                 &exynos_dsi_connector_funcs,
+        ret = drm_connector_init(drm, connector, &exynos_dsi_connector_funcs,
                                  DRM_MODE_CONNECTOR_DSI);
         if (ret) {
                 DRM_ERROR("Failed to initialize connector with drm\n");
@@ -1489,7 +1490,12 @@ static int exynos_dsi_create_connector(struct drm_encoder *encoder)
         connector->status = connector_status_disconnected;
         drm_connector_helper_add(connector, &exynos_dsi_connector_helper_funcs);
         drm_connector_attach_encoder(connector, encoder);
+        if (!drm->registered)
+                return 0;
 
+        connector->funcs->reset(connector);
+        drm_fb_helper_add_one_connector(drm->fb_helper, connector);
+        drm_connector_register(connector);
         return 0;
 }