[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/usb/mixer_quirks.h b/src/kernel/linux/v4.14/sound/usb/mixer_quirks.h
new file mode 100644
index 0000000..b5abd32
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/usb/mixer_quirks.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef SND_USB_MIXER_QUIRKS_H
+#define SND_USB_MIXER_QUIRKS_H
+
+int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer);
+
+void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+ unsigned char samplerate_id);
+
+void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
+ int unitid);
+
+void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
+ struct usb_mixer_elem_info *cval, int unitid,
+ struct snd_kcontrol *kctl);
+
+#endif /* SND_USB_MIXER_QUIRKS_H */
+