interfaces: Introduce the QTI FM HAL.

* Based on observing FM HCI expectations.

Change-Id: I54685ff840e8c4c4e5b0de3cc1bec3eb1ed29579

interfaces/qcom/Android.bp

@@ -31,3 +31,8 @@ hidl_package_root {
     name: "vendor.qti.hardware.cryptfshw",
     path: "vendor/aospa/interfaces/qcom/cryptfshw",
 }
+
+hidl_package_root {
+    name: "vendor.qti.hardware.fm",
+    path: "vendor/aospa/interfaces/qcom/fm",
+}

interfaces/qcom/fm/1.0/Android.bp

@@ -0,0 +1,16 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "vendor.qti.hardware.fm@1.0",
+    root: "vendor.qti.hardware.fm",
+    system_ext_specific: true,
+    srcs: [
+        "types.hal",
+        "IFmHci.hal",
+        "IFmHciCallbacks.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}

interfaces/qcom/fm/1.0/IFmHci.hal

@@ -0,0 +1,13 @@
+package vendor.qti.hardware.fm@1.0;
+
+import IFmHciCallbacks;
+
+interface IFmHci {
+    @entry
+    @callflow(next={"sendHciCommand", "close"})
+    initialize(IFmHciCallbacks callback);
+    @callflow(next={"sendHciCommand", "close"})
+    sendHciCommand(HciPacket command);
+    @exit
+    close();
+};

interfaces/qcom/fm/1.0/IFmHciCallbacks.hal

@@ -0,0 +1,6 @@
+package vendor.qti.hardware.fm@1.0;
+
+interface IFmHciCallbacks {
+    initializationComplete(Status status);
+    hciEventReceived(HciPacket event);
+};

interfaces/qcom/fm/1.0/types.hal

@@ -0,0 +1,10 @@
+package vendor.qti.hardware.fm@1.0;
+
+enum Status : int32_t {
+  SUCCESS,
+  TRANSPORT_ERROR,
+  INITIALIZATION_ERROR,
+  UNKNOWN
+};
+
+typedef vec<uint8_t> HciPacket;