[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/oss/sb_ess.h b/src/kernel/linux/v4.14/sound/oss/sb_ess.h
new file mode 100644
index 0000000..1c74121
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/oss/sb_ess.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Created: 9-Jan-1999 Rolf Fokkens
+ */
+
+extern void ess_intr
+ (sb_devc *devc);
+extern int ess_dsp_init
+ (sb_devc *devc, struct address_info *hw_config);
+
+extern struct audio_driver *ess_audio_init
+ (sb_devc *devc, int *audio_flags, int *format_mask);
+extern int ess_midi_init
+ (sb_devc *devc, struct address_info *hw_config);
+extern void ess_mixer_init
+ (sb_devc *devc);
+
+extern int ess_init
+ (sb_devc *devc, struct address_info *hw_config);
+extern int ess_dsp_reset
+ (sb_devc *devc);
+
+extern void ess_setmixer
+ (sb_devc *devc, unsigned int port, unsigned int value);
+extern unsigned int ess_getmixer
+ (sb_devc *devc, unsigned int port);
+extern int ess_mixer_set
+ (sb_devc *devc, int dev, int left, int right);
+extern int ess_mixer_reset
+ (sb_devc *devc);
+extern void ess_mixer_reload
+ (sb_devc * devc, int dev);
+extern int ess_set_recmask
+ (sb_devc *devc, int *mask);
+