109 lines
4.0 KiB
C
Executable File
109 lines
4.0 KiB
C
Executable File
/*****************************************************************************
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* | File : luckfox_sysfs.h
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* | Author : luckfox team
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* | Function : sysfs
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2023-08-01
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* | Info : Basic version
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*
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#ifndef _SYSFS_H_
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#define _SYSFS_H_
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/**
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* write_sysfs_int() - write an integer value to a sysfs file
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* @filename: name of the file to write to
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* @basedir: the sysfs directory in which the file is to be found
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* @val: integer value to write to file
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int write_sysfs_int(const char *filename, const char *basedir, int val);
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/**
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* write_sysfs_int_and_verify() - write an integer value to a sysfs file
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* and verify
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* @filename: name of the file to write to
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* @basedir: the sysfs directory in which the file is to be found
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* @val: integer value to write to file
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int write_sysfs_int_and_verify(const char *filename, const char *basedir,
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int val);
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/**
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* write_sysfs_string_and_verify() - string write, readback and verify
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* @filename: name of file to write to
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* @basedir: the sysfs directory in which the file is to be found
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* @val: the string to write
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int write_sysfs_string_and_verify(const char *filename, const char *basedir,
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const char *val);
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/**
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* write_sysfs_string() - write string to a sysfs file
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* @filename: name of file to write to
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* @basedir: the sysfs directory in which the file is to be found
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* @val: the string to write
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int write_sysfs_string(const char *filename, const char *basedir,
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const char *val);
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/**
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* read_sysfs_posint() - read an integer value from file
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* @filename: name of file to read from
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* @basedir: the sysfs directory in which the file is to be found
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*
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* Returns the read integer value >= 0 on success, otherwise a negative error
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* code.
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**/
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int read_sysfs_posint(const char *filename, const char *basedir);
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/**
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* read_sysfs_float() - read a float value from file
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* @filename: name of file to read from
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* @basedir: the sysfs directory in which the file is to be found
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* @val: output the read float value
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int read_sysfs_float(const char *filename, const char *basedir, float *val);
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/**
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* read_sysfs_string() - read a string from file
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* @filename: name of file to read from
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* @basedir: the sysfs directory in which the file is to be found
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* @str: output the read string
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*
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* Returns a value >= 0 on success, otherwise a negative error code.
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**/
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int read_sysfs_string(const char *filename, const char *basedir, char *str);
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#endif
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