diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/085-MIPS-BCM47XX-Get-GPIO-pin-from-nvram-configuration.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/085-MIPS-BCM47XX-Get-GPIO-pin-from-nvram-configuration.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/085-MIPS-BCM47XX-Get-GPIO-pin-from-nvram-configuration.patch b/target/linux/brcm47xx/patches-3.10/085-MIPS-BCM47XX-Get-GPIO-pin-from-nvram-configuration.patch new file mode 100644 index 0000000000..a0f91a48ad --- /dev/null +++ b/target/linux/brcm47xx/patches-3.10/085-MIPS-BCM47XX-Get-GPIO-pin-from-nvram-configuration.patch @@ -0,0 +1,54 @@ +commit e49ec29e2da1fd7cdd6d966f389add031a1027a9 +Author: Hauke Mehrtens <hauke@hauke-m.de> +Date: Wed Sep 18 13:31:15 2013 +0200 + + MIPS: BCM47XX: Get GPIO pin from nvram configuration + + The nvram contains some gpio configuration for boards. It is stored in + a gpio<number>=name format e.g. + gpio8=wps_button + gpio4=robo_reset + + This patches adds a function to parse these entries, so other driver + can use it. + + Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> + Cc: linux-mips@linux-mips.org + Patchwork: https://patchwork.linux-mips.org/patch/5841/ + Signed-off-by: Ralf Baechle <ralf@linux-mips.org> + +--- 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 */ |