asoc: wcd937x: move export functions to new header

For export functions from wcd937x use separate
header as internal header is only supposed to be
used within wcd937x driver logic.

Change-Id: Ice373ff95f7166a2f968458b25223c582edc7fba
Signed-off-by: Laxminath Kasam <[email protected]>

asoc/codecs/wcd937x/internal.h

@@ -168,6 +168,4 @@ extern int wcd937x_mbhc_micb_adjust_voltage(struct snd_soc_codec *codec,
 extern int wcd937x_get_micb_vout_ctl_val(u32 micb_mv);
 extern int wcd937x_micbias_control(struct snd_soc_codec *codec, int micb_num,
 			int req, bool is_dapm);
-extern int wcd937x_info_create_codec_entry(struct snd_info_entry *codec_root,
-				    struct snd_soc_codec *codec);
 #endif

asoc/codecs/wcd937x/wcd937x.c

@@ -25,6 +25,7 @@
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include "internal.h"
+#include "wcd937x.h"
 #include "../wcdcal-hwdep.h"
 #include "wcd937x-registers.h"
 #include "../msm-cdc-pinctrl.h"

asoc/codecs/wcd937x/wcd937x.h

@@ -0,0 +1,27 @@
+/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _WCD937X_H
+#define _WCD937X_H
+
+#ifdef CONFIG_SND_SOC_WCD937X
+extern int wcd937x_info_create_codec_entry(struct snd_info_entry *codec_root,
+				    struct snd_soc_codec *codec);
+#else
+extern int wcd937x_info_create_codec_entry(struct snd_info_entry *codec_root,
+				    struct snd_soc_codec *codec)
+{
+	return 0;
+}
+#endif /* CONFIG_SND_SOC_WCD937X */
+
+#endif

asoc/sm6150.c

@@ -42,7 +42,7 @@
 #include "codecs/bolero/bolero-cdc.h"
 #include <dt-bindings/sound/audio-codec-port-types.h>
 #include "codecs/bolero/wsa-macro.h"
-#include "codecs/wcd937x/internal.h"
+#include "codecs/wcd937x/wcd937x.h"
 
 #define DRV_NAME "sm6150-asoc-snd"