include/linux/bcm47xx_nvram.h

   1 /*
   2  *  This program is free software; you can redistribute  it and/or modify it
   3  *  under  the terms of  the GNU General  Public License as published by the
   4  *  Free Software Foundation;  either version 2 of the  License, or (at your
   5  *  option) any later version.
   6  */
   7
   8 #ifndef __BCM47XX_NVRAM_H
   9 #define __BCM47XX_NVRAM_H
  10
  11 #include <linux/errno.h>
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/vmalloc.h>
  15
  16 #ifdef CONFIG_BCM47XX_NVRAM
  17 int bcm47xx_nvram_init_from_mem(u32 base, u32 lim);
  18 int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
  19 int bcm47xx_nvram_gpio_pin(const char *name);
  20 char *bcm47xx_nvram_get_contents(size_t *val_len);
  21 static inline void bcm47xx_nvram_release_contents(char *nvram)
  22 {
  23         vfree(nvram);
  24 };
  25 #else
  26 static inline int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
  27 {
  28         return -ENOTSUPP;
  29 };
  30 static inline int bcm47xx_nvram_getenv(const char *name, char *val,
  31                                        size_t val_len)
  32 {
  33         return -ENOTSUPP;
  34 };
  35 static inline int bcm47xx_nvram_gpio_pin(const char *name)
  36 {
  37         return -ENOTSUPP;
  38 };
  39
  40 static inline char *bcm47xx_nvram_get_contents(size_t *val_len)
  41 {
  42         return NULL;
  43 };
  44
  45 static inline void bcm47xx_nvram_release_contents(char *nvram)
  46 {
  47 };
  48 #endif
  49
  50 #endif /* __BCM47XX_NVRAM_H */