add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/gpio/gpio-exar.c
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@@ -1,11 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * GPIO driver for Exar XR17V35X chip
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  *
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  * Copyright (C) 2015 Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/bitops.h>
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 #include <linux/device.h>
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@@ -80,7 +77,10 @@
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 		EXAR_OFFSET_MPIOSEL_HI : EXAR_OFFSET_MPIOSEL_LO;
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 	unsigned int bit  = (offset + exar_gpio->first_pin) % 8;
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-	return !!(exar_get(chip, addr) & BIT(bit));
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+	if (exar_get(chip, addr) & BIT(bit))
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+		return GPIO_LINE_DIRECTION_IN;
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+
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+	return GPIO_LINE_DIRECTION_OUT;
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 }
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 static int exar_get_value(struct gpio_chip *chip, unsigned int offset)