[PATCH v2 1/3] video: bridge-uclass: add get_display_timing ops

[Svyatoslav Ryhel]

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.

Signed-off-by: Svyatoslav Ryhel <clamor95 at gmail.com>
---
 drivers/video/bridge/video-bridge-uclass.c | 11 +++++++++++
 include/video_bridge.h                     | 21 +++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/drivers/video/bridge/video-bridge-uclass.c b/drivers/video/bridge/video-bridge-uclass.c
index 2084a2e03ee..1b8aa12b9e8 100644
--- 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 3b429eac578..7158deb299a 100644
--- 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
  *
-- 
2.43.0