Merge "Improve docs for ro.input.video_enabled" into qt-dev am: 3c9aec6db9
am: 391c1887e9
Change-Id: Ifd9f6fbe37d330716c44fa7cd0b0fba4a47949af
diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp
index 0544ec1..ce56272 100644
--- a/services/inputflinger/EventHub.cpp
+++ b/services/inputflinger/EventHub.cpp
@@ -115,8 +115,15 @@
* The system property ro.input.video_enabled can be used to control whether
* EventHub scans and opens V4L devices. As V4L does not support multiple
* clients, EventHub effectively blocks access to these devices when it opens
- * them. This property enables other clients to read these devices for testing
- * and development.
+ * them.
+ *
+ * Setting this to "false" would prevent any video devices from being discovered and
+ * associated with input devices.
+ *
+ * This property can be used as follows:
+ * 1. To turn off features that are dependent on video device presence.
+ * 2. During testing and development, to allow other clients to read video devices
+ * directly from /dev.
*/
static bool isV4lScanningEnabled() {
return property_get_bool("ro.input.video_enabled", true /* default_value */);