Pass through availability of audio mic for input devices.

Bug: 15374820
Change-Id: Id2ca6da10165e3a887ebfbb18f663a3bf316ac79

1 files changed, 15 insertions, 0 deletions

diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp
index 313569237a..4d54d56d8e 100644
--- a/services/inputflinger/EventHub.cpp
+++ b/services/inputflinger/EventHub.cpp
@@ -1279,6 +1279,11 @@ status_t EventHub::openDeviceLocked(const char *devicePath) {
         return -1;
     }
 
+    // Determine whether the device has a mic.
+    if (deviceHasMicLocked(device)) {
+        device->classes |= INPUT_DEVICE_CLASS_MIC;
+    }
+
     // Determine whether the device is external or internal.
     if (isExternalDeviceLocked(device)) {
         device->classes |= INPUT_DEVICE_CLASS_EXTERNAL;
@@ -1415,6 +1420,16 @@ bool EventHub::isExternalDeviceLocked(Device* device) {
     return device->identifier.bus == BUS_USB || device->identifier.bus == BUS_BLUETOOTH;
 }
 
+bool EventHub::deviceHasMicLocked(Device* device) {
+    if (device->configuration) {
+        bool value;
+        if (device->configuration->tryGetProperty(String8("audio.mic"), value)) {
+            return value;
+        }
+    }
+    return false;
+}
+
 int32_t EventHub::getNextControllerNumberLocked(Device* device) {
     if (mControllerNumbers.isFull()) {
         ALOGI("Maximum number of controllers reached, assigning controller number 0 to device %s",