add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/video/of_display_timing.h
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@@ -1,14 +1,15 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright 2012 Steffen Trumtrar <s.trumtrar@pengutronix.de>
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  *
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  * display timings of helpers
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- *
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- * This file is released under the GPLv2
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  */
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 #ifndef __LINUX_OF_DISPLAY_TIMING_H
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 #define __LINUX_OF_DISPLAY_TIMING_H
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+#include <linux/errno.h>
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+
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 struct device_node;
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 struct display_timing;
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 struct display_timings;