Eric Lee / smarc-uboot

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include/hwconfig.h 2.37 KB
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93f9dcf9e   Anton Vorontsov   Add simple hwconf... 
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  /*
   * An inteface for configuring a hardware via u-boot environment.
   *
   * Copyright (c) 2009  MontaVista Software, Inc.
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   * Copyright 2011 Freescale Semiconductor, Inc.
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   *
   * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
   *
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   * SPDX-License-Identifier:	GPL-2.0+
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   */
  
  #ifndef _HWCONFIG_H
  #define _HWCONFIG_H
  
  #include <linux/types.h>
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  #include <linux/errno.h>
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  #ifdef CONFIG_HWCONFIG
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  extern int hwconfig_f(const char *opt, char *buf);
  extern const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf);
  extern int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf);
  extern int hwconfig_sub_f(const char *opt, const char *subopt, char *buf);
  extern const char *hwconfig_subarg_f(const char *opt, const char *subopt,
  				     size_t *subarglen, char *buf);
  extern int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
  				 const char *subarg, char *buf);
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  #else
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  static inline int hwconfig_f(const char *opt, char *buf)
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  {
  	return -ENOSYS;
  }
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  static inline const char *hwconfig_arg_f(const char *opt, size_t *arglen,
  					 char *buf)
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  {
  	*arglen = 0;
  	return "";
  }
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  static inline int hwconfig_arg_cmp_f(const char *opt, const char *arg,
  				     char *buf)
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  {
  	return -ENOSYS;
  }
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  static inline int hwconfig_sub_f(const char *opt, const char *subopt, char *buf)
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  {
  	return -ENOSYS;
  }
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  static inline const char *hwconfig_subarg_f(const char *opt, const char *subopt,
  					    size_t *subarglen, char *buf)
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  {
  	*subarglen = 0;
  	return "";
  }
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  static inline int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
  					const char *subarg, char *buf)
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  {
  	return -ENOSYS;
  }
  
  #endif /* CONFIG_HWCONFIG */
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  static inline int hwconfig(const char *opt)
  {
  	return hwconfig_f(opt, NULL);
  }
  
  static inline const char *hwconfig_arg(const char *opt, size_t *arglen)
  {
  	return hwconfig_arg_f(opt, arglen, NULL);
  }
  
  static inline int hwconfig_arg_cmp(const char *opt, const char *arg)
  {
  	return hwconfig_arg_cmp_f(opt, arg, NULL);
  }
  
  static inline int hwconfig_sub(const char *opt, const char *subopt)
  {
  	return hwconfig_sub_f(opt, subopt, NULL);
  }
  
  static inline const char *hwconfig_subarg(const char *opt, const char *subopt,
  					  size_t *subarglen)
  {
  	return hwconfig_subarg_f(opt, subopt, subarglen, NULL);
  }
  
  static inline int hwconfig_subarg_cmp(const char *opt, const char *subopt,
  				      const char *subarg)
  {
  	return hwconfig_subarg_cmp_f(opt, subopt, subarg, NULL);
  }
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  #endif /* _HWCONFIG_H */