--- zzzz-none-000/linux-3.10.107/sound/soc/codecs/tlv320aic23.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/soc/codecs/tlv320aic23.h	2021-02-04 17:41:59.000000000 +0000
@@ -12,6 +12,12 @@
 #ifndef _TLV320AIC23_H
 #define _TLV320AIC23_H
 
+struct device;
+struct regmap_config;
+
+extern const struct regmap_config tlv320aic23_regmap;
+int tlv320aic23_probe(struct device *dev, struct regmap *regmap);
+
 /* Codec TLV320AIC23 */
 #define TLV320AIC23_LINVOL		0x00
 #define TLV320AIC23_RINVOL		0x01