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diff --git a/include/sound/da9055.h b/include/sound/da9055.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * DA9055 ALSA Soc codec driver
+ *
+ * Copyright (c) 2012 Dialog Semiconductor
+ *
+ * Tested on (Samsung SMDK6410 board + DA9055 EVB) using I2S and I2C
+ * Written by David Chen <david.chen@diasemi.com> and
+ * Ashish Chavan <ashish.chavan@kpitcummins.com>
+ */
+
+#ifndef __SOUND_DA9055_H__
+#define __SOUND_DA9055_H__
+
+enum da9055_micbias_voltage {
+ DA9055_MICBIAS_1_6V = 0,
+ DA9055_MICBIAS_1_8V = 1,
+ DA9055_MICBIAS_2_1V = 2,
+ DA9055_MICBIAS_2_2V = 3,
+};
+
+struct da9055_platform_data {
+ /* Selects which of the two MicBias pins acts as the bias source */
+ bool micbias_source;
+ /* Selects the micbias voltage */
+ enum da9055_micbias_voltage micbias;
+};
+
+#endif