From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- tools/gpio/gpio-utils.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 tools/gpio/gpio-utils.h (limited to 'tools/gpio/gpio-utils.h') diff --git a/tools/gpio/gpio-utils.h b/tools/gpio/gpio-utils.h new file mode 100644 index 000000000..6c69a9f1c --- /dev/null +++ b/tools/gpio/gpio-utils.h @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * GPIO tools - utility helpers library for the GPIO tools + * + * Copyright (C) 2015 Linus Walleij + * + * Portions copied from iio_utils and lssio: + * Copyright (c) 2010 Manuel Stahl + * Copyright (c) 2008 Jonathan Cameron + * * + */ +#ifndef _GPIO_UTILS_H_ +#define _GPIO_UTILS_H_ + +#include +#include +#include + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +static inline int check_prefix(const char *str, const char *prefix) +{ + return strlen(str) > strlen(prefix) && + strncmp(str, prefix, strlen(prefix)) == 0; +} + +int gpiotools_request_linehandle(const char *device_name, unsigned int *lines, + unsigned int num_lines, unsigned int flag, + struct gpiohandle_data *data, + const char *consumer_label); +int gpiotools_release_linehandle(const int fd); + +int gpiotools_request_line(const char *device_name, + unsigned int *lines, + unsigned int num_lines, + struct gpio_v2_line_config *config, + const char *consumer); +int gpiotools_set_values(const int fd, struct gpio_v2_line_values *values); +int gpiotools_get_values(const int fd, struct gpio_v2_line_values *values); +int gpiotools_release_line(const int fd); + +int gpiotools_get(const char *device_name, unsigned int line); +int gpiotools_gets(const char *device_name, unsigned int *lines, + unsigned int num_lines, unsigned int *values); +int gpiotools_set(const char *device_name, unsigned int line, + unsigned int value); +int gpiotools_sets(const char *device_name, unsigned int *lines, + unsigned int num_lines, unsigned int *values); + +/* helper functions for gpio_v2_line_values bits */ +static inline void gpiotools_set_bit(__u64 *b, int n) +{ + *b |= _BITULL(n); +} + +static inline void gpiotools_change_bit(__u64 *b, int n) +{ + *b ^= _BITULL(n); +} + +static inline void gpiotools_clear_bit(__u64 *b, int n) +{ + *b &= ~_BITULL(n); +} + +static inline int gpiotools_test_bit(__u64 b, int n) +{ + return !!(b & _BITULL(n)); +} + +static inline void gpiotools_assign_bit(__u64 *b, int n, bool value) +{ + if (value) + gpiotools_set_bit(b, n); + else + gpiotools_clear_bit(b, n); +} + +#endif /* _GPIO_UTILS_H_ */ -- cgit v1.2.3