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authorHauke Mehrtens <hauke@hauke-m.de>2013-08-01 19:04:12 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2013-08-01 19:04:12 +0000
commit2363cb38937cac36dd468cdb70819b1c7fe9ba9e (patch)
treef7c544b9a71bac552310044edf99c11300b9edc0 /target/linux/brcm47xx/patches-3.10/180-bcm47xx-nvram-gpio.patch
parent1eabf431df03b00e0fa7c2986f7c08ea0c404a4d (diff)
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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.patch35
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 */