From be1ea51b83517803f8f351c638958864bc659f27 Mon Sep 17 00:00:00 2001
From: Simon Glass <simon.glass@canonical.com>
Date: Thu, 13 Nov 2025 06:51:03 -0700
Subject: [PATCH] input: Provide a way for tests to register a mouse click

In tests it is useful to fake a mouse click to check that expo handles
it correctly. Create a function for this.

Signed-off-by: Simon Glass <simon.glass@canonical.com>
---
 drivers/input/mouse-uclass.c | 13 +++++++++++++
 include/mouse.h              | 14 ++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/input/mouse-uclass.c b/drivers/input/mouse-uclass.c
index dea8babf5fe..99de94e68b0 100644
--- a/drivers/input/mouse-uclass.c
+++ b/drivers/input/mouse-uclass.c
@@ -107,6 +107,19 @@ int mouse_set_video(struct udevice *dev, struct udevice *video_dev)
 	return 0;
 }
 
+int mouse_queue_click_for_test(struct udevice *dev, int x, int y)
+{
+	struct mouse_uc_priv *uc_priv = dev_get_uclass_priv(dev);
+
+	uc_priv->click_pending = true;
+	uc_priv->click_pos.x = x;
+	uc_priv->click_pos.y = y;
+	uc_priv->last_pos.x = x;
+	uc_priv->last_pos.y = y;
+
+	return 0;
+}
+
 UCLASS_DRIVER(mouse) = {
 	.id		= UCLASS_MOUSE,
 	.name		= "mouse",
diff --git a/include/mouse.h b/include/mouse.h
index 92609cfd0e0..6180a2fc957 100644
--- a/include/mouse.h
+++ b/include/mouse.h
@@ -176,4 +176,18 @@ int mouse_set_ptr_visible(struct udevice *dev, bool visible);
  */
 int mouse_set_video(struct udevice *dev, struct udevice *video_dev);
 
+/**
+ * mouse_queue_click_for_test() - Queue a click event for testing
+ *
+ * This is a back-door function for tests to simulate a mouse click at a
+ * specific position. The click will be returned by the next call to
+ * mouse_get_click().
+ *
+ * @dev: Mouse device
+ * @x: X coordinate of click
+ * @y: Y coordinate of click
+ * Returns: 0 if OK, -ve on error
+ */
+int mouse_queue_click_for_test(struct udevice *dev, int x, int y);
+
 #endif