bcm53xx: update NVRAM driver to support getting contents
[openwrt/openwrt.git] / target / linux / bcm53xx / files / 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/types.h>
12 #include <linux/kernel.h>
13 #include <linux/vmalloc.h>
14
15 #ifdef CONFIG_BCM47XX_NVRAM
16 int bcm47xx_nvram_init_from_mem(u32 base, u32 lim);
17 int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
18 int bcm47xx_nvram_gpio_pin(const char *name);
19 char *bcm47xx_nvram_get_contents(size_t *val_len);
20 static inline void bcm47xx_nvram_release_contents(char *nvram)
21 {
22 vfree(nvram);
23 };
24 #else
25 static inline int bcm47xx_nvram_init_from_mem(u32 base, u32 lim)
26 {
27 return -ENOTSUPP;
28 };
29 static inline int bcm47xx_nvram_getenv(const char *name, char *val,
30 size_t val_len)
31 {
32 return -ENOTSUPP;
33 };
34 static inline int bcm47xx_nvram_gpio_pin(const char *name)
35 {
36 return -ENOTSUPP;
37 };
38
39 static inline char *bcm47xx_nvram_get_contents(size_t *val_len)
40 {
41 return NULL;
42 };
43
44 static inline void bcm47xx_nvram_release_contents(char *nvram)
45 {
46 };
47 #endif
48
49 #endif /* __BCM47XX_NVRAM_H */