df4878e969
The gpio_chip label is useful for userspace to understand what kind of GPIO chip it is dealing with. Let's store a copy of this label in the gpio_device, add it to the struct passed to userspace for GPIO_GET_CHIPINFO_IOCTL and modify lsgpio to show it. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
31 lines
771 B
C
31 lines
771 B
C
/*
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* <linux/gpio.h> - userspace ABI for the GPIO character devices
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*
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* Copyright (C) 2015 Linus Walleij
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#ifndef _UAPI_GPIO_H_
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#define _UAPI_GPIO_H_
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/**
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* struct gpiochip_info - Information about a certain GPIO chip
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* @name: the name of this GPIO chip
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* @label: a functional name for this GPIO chip
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* @lines: number of GPIO lines on this chip
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*/
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struct gpiochip_info {
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char name[32];
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char label[32];
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__u32 lines;
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};
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#define GPIO_GET_CHIPINFO_IOCTL _IOR('o', 0x01, struct gpiochip_info)
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#endif /* _UAPI_GPIO_H_ */
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