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diff --git a/include/media/i2c/cs53l32a.h b/include/media/i2c/cs53l32a.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ cs53l32a.h - definition for cs53l32a inputs and outputs
+
+ Copyright (C) 2006 Hans Verkuil (hverkuil@xs4all.nl)
+
+*/
+
+#ifndef _CS53L32A_H_
+#define _CS53L32A_H_
+
+/* There are 2 physical inputs, but the second input can be
+ placed in two modes, the first mode bypasses the PGA (gain),
+ the second goes through the PGA. Hence there are three
+ possible inputs to choose from. */
+
+/* CS53L32A HW inputs */
+#define CS53L32A_IN0 0
+#define CS53L32A_IN1 1
+#define CS53L32A_IN2 2
+
+#endif