diff options
author | 2019-04-05 14:11:43 -0700 | |
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committer | 2019-04-05 14:11:43 -0700 | |
commit | 29f884906c37b19dfdfeae16e634034e64a6108a (patch) | |
tree | 0058318e803ea56f2aa1eb705e09a9b501766344 | |
parent | 7b5d9813aacda610b262d6773f13a21ba8a75b98 (diff) |
Improve docs for ro.input.video_enabled
The setting was originally intended for development only, but it is now
being used in production. Update the docs to highlight the importance of
this setting.
Bug: 123314955
Test: none
Change-Id: I9bcca416114ac39b2fa2949aa02111d721bdc566
-rw-r--r-- | services/inputflinger/EventHub.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp index 0544ec16c5..ce5627271a 100644 --- a/services/inputflinger/EventHub.cpp +++ b/services/inputflinger/EventHub.cpp @@ -115,8 +115,15 @@ static bool isV4lTouchNode(const char* name) { * 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 */); |