audio: Add support for Audience EarSmart ICs
Some devices (often T-Mobile variants) have extra hardware for
incall audio processing.
Audio must be routed to the ES IC properly so it can be passed to
ALSA, otherwise the RX/TX streams are lost.
Change-Id: Ib29c747d5728a09726e14bab00f26ad273400aba
diff --git a/audio/audience.h b/audio/audience.h
new file mode 100644
index 0000000..5200a3f
--- /dev/null
+++ b/audio/audience.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2017 Christopher N. Hesse <raymanfx@gmail.com>
+ *
+ * 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.
+ */
+
+#include "audio_hw.h"
+#include "voice.h"
+
+enum es_power_state {
+ ES_POWER_FW_LOAD,
+ ES_POWER_SLEEP,
+ ES_POWER_SLEEP_PENDING,
+ ES_POWER_AWAKE,
+ ES_MAX = ES_POWER_AWAKE
+};
+
+int es_start_voice_session(struct voice_session *session);
+void es_stop_voice_session();