UsbGadget: Add support for UVC function

UVC is a new USB function supported in Android. This CL adds UVC as a
valid function and gives it a new pid of 0x4ee[de]. UVC function is
guarded by the property `ro.usb.uvc.enabled`. When this property is set
to false, UVC won't be considered as a valid gadget function.

Bug: 242344221
Test: Manually tested that the UVC function is successfully configured
Change-Id: I7ce1cc192c09b5f3cd7c73405fe54426a1311dfb

1 files changed, 27 insertions, 0 deletions

diff --git a/usb/gadget/UsbGadget.cpp b/usb/gadget/UsbGadget.cpp
index 7e0b3bd..bccf8a5 100644
--- a/usb/gadget/UsbGadget.cpp
+++ b/usb/gadget/UsbGadget.cpp
@@ -26,6 +26,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <android-base/properties.h>
+
 #include <aidl/android/frameworks/stats/IStats.h>
 
 namespace aidl {
@@ -34,6 +36,9 @@ namespace hardware {
 namespace usb {
 namespace gadget {
 
+using ::android::base::GetBoolProperty;
+using ::android::hardware::google::pixel::usb::kUvcEnabled;
+
 string enabledPath;
 constexpr char kHsi2cPath[] = "/sys/devices/platform/10d60000.hsi2c";
 constexpr char kI2CPath[] = "/sys/devices/platform/10d60000.hsi2c/i2c-";
@@ -302,6 +307,28 @@ static Status validateAndSetVidPid(uint64_t functions) {
                 ret = Status(setVidPid("0x18d1", "0x4eec"));
             }
             break;
+        case GadgetFunction::UVC:
+            if (!(vendorFunctions == "user" || vendorFunctions == "")) {
+                ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
+                ret = Status::CONFIGURATION_NOT_SUPPORTED;
+            } else if (!GetBoolProperty(kUvcEnabled, false)) {
+                ALOGE("UVC function not enabled by config");
+                ret = Status::CONFIGURATION_NOT_SUPPORTED;
+            } else {
+                ret = Status(setVidPid("0x18d1", "0x4eed"));
+            }
+            break;
+        case GadgetFunction::ADB | GadgetFunction::UVC:
+            if (!(vendorFunctions == "user" || vendorFunctions == "")) {
+                ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
+                ret = Status::CONFIGURATION_NOT_SUPPORTED;
+            } else if (!GetBoolProperty(kUvcEnabled, false)) {
+                ALOGE("UVC function not enabled by config");
+                ret = Status::CONFIGURATION_NOT_SUPPORTED;
+            } else {
+                ret = Status(setVidPid("0x18d1", "0x4eee"));
+            }
+            break;
         default:
             ALOGE("Combination not supported");
             ret = Status::CONFIGURATION_NOT_SUPPORTED;