diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2013-08-01 19:04:12 +0000 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2013-08-01 19:04:12 +0000 |
| commit | 2363cb38937cac36dd468cdb70819b1c7fe9ba9e (patch) | |
| tree | f7c544b9a71bac552310044edf99c11300b9edc0 /target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch | |
| parent | 1eabf431df03b00e0fa7c2986f7c08ea0c404a4d (diff) | |
| download | upstream-2363cb38937cac36dd468cdb70819b1c7fe9ba9e.tar.gz upstream-2363cb38937cac36dd468cdb70819b1c7fe9ba9e.tar.bz2 upstream-2363cb38937cac36dd468cdb70819b1c7fe9ba9e.zip | |
brcm47xx: add function to get a gpio pin by name
bcm47xx_nvram_gpio_pin() returns a gpio pin number for a given name based
on configuration data in nvram.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 37644
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch b/target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch new file mode 100644 index 0000000000..c4efeab313 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch @@ -0,0 +1,35 @@ +--- a/arch/mips/bcm47xx/nvram.c ++++ b/arch/mips/bcm47xx/nvram.c +@@ -190,3 +190,23 @@ int bcm47xx_nvram_getenv(char *name, cha + return -ENOENT; + } + EXPORT_SYMBOL(bcm47xx_nvram_getenv); ++ ++int bcm47xx_nvram_gpio_pin(const char *name) ++{ ++ int i, err; ++ char nvram_var[10]; ++ char buf[30]; ++ ++ for (i = 0; i < 16; i++) { ++ err = snprintf(nvram_var, sizeof(nvram_var), "gpio%i", i); ++ if (err <= 0) ++ continue; ++ err = bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf)); ++ if (err <= 0) ++ continue; ++ if (!strcmp(name, buf)) ++ return i; ++ } ++ return -ENOENT; ++} ++EXPORT_SYMBOL(bcm47xx_nvram_gpio_pin); +--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h ++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_nvram.h +@@ -48,4 +48,6 @@ static inline void bcm47xx_nvram_parse_m + printk(KERN_WARNING "Can not parse mac address: %s\n", buf); + } + ++int bcm47xx_nvram_gpio_pin(const char *name); ++ + #endif /* __BCM47XX_NVRAM_H */ |