ASoC: wsa883x: Add support for wsa883x speaker amplifer

WSA883x is a speaker amplifier with soundwire interface and
enumerates as soundwire slave. WSA883x supports audio playback
on speakers and has temperature sensors for better speaker
protection and enhanced boost control support. Add software
driver support to enable WSA883x speaker amplifier.

Change-Id: Ib9cf2eebdda5ce331154bc786f059c5757f34fa2
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>

asoc/codecs/wsa883x/wsa883x.h

@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _WSA883X_H
+#define _WSA883X_H
+
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/info.h>
+#include "wsa883x-registers.h"
+
+#define WSA883X_MAX_SWR_PORTS   4
+
+#if IS_ENABLED(CONFIG_SND_SOC_WSA883X)
+int wsa883x_set_channel_map(struct snd_soc_component *component,
+				   u8 *port, u8 num_port, unsigned int *ch_mask,
+				   unsigned int *ch_rate, u8 *port_type);
+
+
+int wsa883x_codec_info_create_codec_entry(
+					struct snd_info_entry *codec_root,
+					struct snd_soc_component *component);
+#else
+static int wsa883x_set_channel_map(struct snd_soc_component *component,
+				   u8 *port, u8 num_port, unsigned int *ch_mask,
+				   unsigned int *ch_rate, u8 *port_type)
+{
+	return 0;
+}
+
+static int wsa883x_codec_info_create_codec_entry(
+					struct snd_info_entry *codec_root,
+					struct snd_soc_component *component)
+{
+	return 0;
+}
+
+#endif
+
+#endif /* _WSA883X_H */