video: bridge-uclass: add get_display_timing ops

Add get_display_timing ops for internal bridges linked to
panels that do not support EDID (MIPI-DSI panels for example)
or have EDID not routed.

Tested-by: Dang Huynh <danct12@riseup.net> (PineTab 2)
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/video/bridge/video-bridge-uclass.c b/drivers/video/bridge/video-bridge-uclass.c
index 2084a2e..1b8aa12 100644 (file)
--- a/drivers/video/bridge/video-bridge-uclass.c
+++ b/drivers/video/bridge/video-bridge-uclass.c
@@ -33,6 +33,17 @@ int video_bridge_attach(struct udevice *dev)
        return ops->attach(dev);
 }
 
+int video_bridge_get_display_timing(struct udevice *dev,
+                                   struct display_timing *timings)
+{
+       struct video_bridge_ops *ops = video_bridge_get_ops(dev);
+
+       if (!ops->get_display_timing)
+               return -ENOSYS;
+
+       return ops->get_display_timing(dev, timings);
+}
+
 int video_bridge_check_attached(struct udevice *dev)
 {
        struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);

diff --git a/include/video_bridge.h b/include/video_bridge.h
index 3b429ea..7158deb 100644 (file)
--- a/include/video_bridge.h
+++ b/include/video_bridge.h
@@ -53,6 +53,19 @@ struct video_bridge_ops {
         */
        int (*set_backlight)(struct udevice *dev, int percent);
 
+       /**
+        * get_display_timing() - Get display timings from bridge.
+        *
+        * @dev:        Bridge device containing the linked display timings
+        * @tim:        Place to put timings
+        * @return 0 if OK, -ve on error
+        *
+        * This call it totally optional and useful mainly for integrated
+        * bridges with fixed output device.
+        */
+       int (*get_display_timing)(struct udevice *dev,
+                                 struct display_timing *timing);
+
        /**
         * read_edid() - Read information from EDID
         *
@@ -98,6 +111,14 @@ int video_bridge_set_active(struct udevice *dev, bool active);
  */
 int video_bridge_check_attached(struct udevice *dev);
 
+/**
+ * video_bridge_get_display_timing() - Get display timings from bridge.
+ *
+ * @dev:       Bridge device containing the linked display timings
+ * Return: 0 if OK, -ve on error
+ */
+int video_bridge_get_display_timing(struct udevice *dev,
+                                   struct display_timing *timing);
 /**
  * video_bridge_read_edid() - Read information from EDID
  *