include/linux/bcm47xx_nvram.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  */
   4
   5 #ifndef __BCM47XX_NVRAM_H
   6 #define __BCM47XX_NVRAM_H
   7
   8 #include <linux/errno.h>
   9 #include <linux/types.h>
  10 #include <linux/kernel.h>
  11 #include <linux/vmalloc.h>
  12
  13 #ifdef CONFIG_BCM47XX_NVRAM
  14 int bcm47xx_nvram_init_from_iomem(void __iomem *nvram_start, size_t res_size);
  15 int bcm47xx_nvram_init_from_mem(u32 base, u32 lim);
  16 int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
  17 int bcm47xx_nvram_gpio_pin(const char *name);
  18 char *bcm47xx_nvram_get_contents(size_t *val_len);
  19 static inline void bcm47xx_nvram_release_contents(char *nvram)
  20 {
  21         vfree(nvram);
  22 };
  23 #else
  24 static inline int bcm47xx_nvram_init_from_iomem(void __iomem *nvram_start,
  25                                                 size_t res_size)
  26 {
  27         return -ENOTSUPP;
  28 }
  29 static inline int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
  30 {
  31         return -ENOTSUPP;
  32 };
  33 static inline int bcm47xx_nvram_getenv(const char *name, char *val,
  34                                        size_t val_len)
  35 {
  36         return -ENOTSUPP;
  37 };
  38 static inline int bcm47xx_nvram_gpio_pin(const char *name)
  39 {
  40         return -ENOTSUPP;
  41 };
  42
  43 static inline char *bcm47xx_nvram_get_contents(size_t *val_len)
  44 {
  45         return NULL;
  46 };
  47
  48 static inline void bcm47xx_nvram_release_contents(char *nvram)
  49 {
  50 };
  51 #endif
  52
  53 #endif /* __BCM47XX_NVRAM_H */