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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/iio/iio_utils.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/iio/iio_utils.h')
-rw-r--r-- | tools/iio/iio_utils.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/iio/iio_utils.h b/tools/iio/iio_utils.h new file mode 100644 index 000000000..74bde4fde --- /dev/null +++ b/tools/iio/iio_utils.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef _IIO_UTILS_H_ +#define _IIO_UTILS_H_ + +/* IIO - useful set of util functionality + * + * Copyright (c) 2008 Jonathan Cameron + */ + +#include <stdint.h> + +/* Made up value to limit allocation sizes */ +#define IIO_MAX_NAME_LENGTH 64 + +#define FORMAT_SCAN_ELEMENTS_DIR "%s/scan_elements" +#define FORMAT_TYPE_FILE "%s_type" + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0])) + +extern const char *iio_dir; + +/** + * struct iio_channel_info - information about a given channel + * @name: channel name + * @generic_name: general name for channel type + * @scale: scale factor to be applied for conversion to si units + * @offset: offset to be applied for conversion to si units + * @index: the channel index in the buffer output + * @bytes: number of bytes occupied in buffer output + * @bits_used: number of valid bits of data + * @shift: amount of bits to shift right data before applying bit mask + * @mask: a bit mask for the raw output + * @be: flag if data is big endian + * @is_signed: is the raw value stored signed + * @location: data offset for this channel inside the buffer (in bytes) + **/ +struct iio_channel_info { + char *name; + char *generic_name; + float scale; + float offset; + unsigned index; + unsigned bytes; + unsigned bits_used; + unsigned shift; + uint64_t mask; + unsigned be; + unsigned is_signed; + unsigned location; +}; + +static inline int iioutils_check_suffix(const char *str, const char *suffix) +{ + return strlen(str) >= strlen(suffix) && + strncmp(str+strlen(str)-strlen(suffix), + suffix, strlen(suffix)) == 0; +} + +int iioutils_break_up_name(const char *full_name, char **generic_name); +int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used, + unsigned *shift, uint64_t *mask, unsigned *be, + const char *device_dir, const char *name, + const char *generic_name); +int iioutils_get_param_float(float *output, const char *param_name, + const char *device_dir, const char *name, + const char *generic_name); +void bsort_channel_array_by_index(struct iio_channel_info *ci_array, int cnt); +int build_channel_array(const char *device_dir, + struct iio_channel_info **ci_array, int *counter); +int find_type_by_name(const char *name, const char *type); +int write_sysfs_int(const char *filename, const char *basedir, int val); +int write_sysfs_int_and_verify(const char *filename, const char *basedir, + int val); +int write_sysfs_string_and_verify(const char *filename, const char *basedir, + const char *val); +int write_sysfs_string(const char *filename, const char *basedir, + const char *val); +int read_sysfs_posint(const char *filename, const char *basedir); +int read_sysfs_float(const char *filename, const char *basedir, float *val); +int read_sysfs_string(const char *filename, const char *basedir, char *str); + +#endif /* _IIO_UTILS_H_ */ |