Bluetooth: Audio: Microphone Input Control Service and Client

This commit implements the microphone input  control service
(MICS) and client, The implementation supports and uses the
Audio Input Control Service (AICS) secondary service.

Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>

subsys/bluetooth/audio/Kconfig.mics

@@ -0,0 +1,84 @@
+# Bluetooth Audio - Microphone Input Control Service options
+#
+# Copyright (c) 2020 Bose Corporation
+# Copyright (c) 2020-2021 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if BT_AUDIO
+
+##################### Microphone Input Control Service #####################
+
+config BT_MICS
+	bool "Microphone Input Control Service Support"
+	default n
+	help
+	  This option enables support for Microphone Input Control Service.
+
+if BT_MICS
+
+config BT_MICS_AICS_INSTANCE_COUNT
+	int "Audio Input Control Service instance count for Microphone Input Control Service"
+	default 0
+	range 0 BT_AICS_MAX_INSTANCE_COUNT
+	help
+	  This option sets the number of instances of Audio Input Control
+	  Services for MICS.
+
+config BT_MICS_AICS
+	bool # Hidden
+	default y if BT_MICS_AICS_INSTANCE_COUNT > 0
+	help
+	  This hidden option makes it possible to easily check if AICS is
+	  enabled for MICS.
+
+############# DEBUG #############
+
+config BT_DEBUG_MICS
+	bool "Microphone Input Control Service debug"
+	depends on BT_AUDIO_DEBUG
+	help
+	  Use this option to enable Microphone Input Control Service debug logs
+	  for the Bluetooth Audio functionality.
+
+endif # BT_MICS
+
+##################### Microphone Control Profile Client #####################
+
+config BT_MICS_CLIENT
+	bool "Microphone Control Profile Support"
+	select BT_GATT_CLIENT
+	select BT_GATT_AUTO_DISCOVER_CCC
+	help
+	  This option enables support for Microphone Control Profile.
+
+if BT_MICS_CLIENT
+
+config BT_MICS_CLIENT_MAX_AICS_INST
+	int "Maximum number of Audio Input Control Service instances to setup"
+	default 0
+	range 0 3
+	help
+	  Sets the maximum number of Audio Input Control Service (AICS)
+	  instances to setup and use.
+
+config BT_MICS_CLIENT_AICS
+	bool # Hidden
+	default y if BT_MICS_CLIENT_MAX_AICS_INST > 0
+	help
+	  This hidden option makes it possible to easily check if AICS is
+	  enabled for MICS client.
+
+############# DEBUG #############
+
+config BT_DEBUG_MICS_CLIENT
+	bool "Microphone Control Profile debug"
+	depends on BT_AUDIO_DEBUG
+	help
+	  Use this option to enable Microphone Control Profile debug logs for
+	  the Bluetooth Audio functionality.
+
+endif # BT_MICS_CLIENT
+
+endif # BT_AUDIO