#ifndef _IIO_UTILS_H_ #define _IIO_UTILS_H_ /* IIO - useful set of util functionality * * Copyright (c) 2008 Jonathan Cameron * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #include /* Made up value to limit allocation sizes */ #define IIO_MAX_NAME_LENGTH 30 #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_ */ mp;id=d7eb3c0a6bb34cf0e6bc73ed65784363bbba6763'>tools/arch/powerpc

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