add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pinctrl/pinmux.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Internal interface between the core pin control system and the
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  * pinmux portions
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@@ -7,14 +8,14 @@
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  * Based on bits of regulator core, gpio core and clk core
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  *
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  * Author: Linus Walleij <linus.walleij@linaro.org>
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- *
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- * License terms: GNU General Public License (GPL) version 2
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  */
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 #ifdef CONFIG_PINMUX
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 int pinmux_check_ops(struct pinctrl_dev *pctldev);
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 int pinmux_validate_map(const struct pinctrl_map *map, int i);
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+
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+bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned pin);
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 int pinmux_request_gpio(struct pinctrl_dev *pctldev,
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 			struct pinctrl_gpio_range *range,
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@@ -43,6 +44,12 @@
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 	return 0;
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 }
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+static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev,
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+					       unsigned pin)
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+{
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+	return true;
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+}
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+
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 static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev,
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 			struct pinctrl_gpio_range *range,
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 			unsigned pin, unsigned gpio)