interfaces: Introduce QTI CryptFS HW HAL.

* Clean room implementation of the new Q cryptfs_hw HAL.

 * Based on observing libcryptfs_hw expectations.

Change-Id: I3acf0b9041279b29fee6e747364d91c86c4f541e

interfaces/qcom/Android.bp

@@ -21,3 +21,8 @@ hidl_package_root {
     name: "vendor.qti.hardware.btconfigstore",
     path: "vendor/aospa/interfaces/qcom/btconfigstore",
 }
+
+hidl_package_root {
+    name: "vendor.qti.hardware.cryptfshw",
+    path: "vendor/aospa/interfaces/qcom/cryptfshw",
+}

interfaces/qcom/cryptfshw/1.0/Android.bp

@@ -0,0 +1,14 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "vendor.qti.hardware.cryptfshw@1.0",
+    root: "vendor.qti.hardware.cryptfshw",
+    system_ext_specific: true,
+    srcs: [
+        "ICryptfsHw.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}

interfaces/qcom/cryptfshw/1.0/ICryptfsHw.hal

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2019 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package vendor.qti.hardware.cryptfshw@1.0;
+
+interface ICryptfsHw {
+    setIceParam(uint32_t flag) generates (int32_t setIceParamRet);
+    setKey(string passwd, string enc_mode) generates (int32_t setKeyRet);
+    updateKey(string oldpw, string newpw, string enc_mode) generates (int32_t updateKeyRet);
+    clearKey() generates(int32_t clearKeyRet);
+};