diff options
Diffstat (limited to 'drivers/gpio/gpio-uclass.c')
| -rw-r--r-- | drivers/gpio/gpio-uclass.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index f016532354..ab17fa8a5d 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -68,6 +68,45 @@ static int gpio_to_device(unsigned int gpio, struct gpio_desc *desc) return ret ? ret : -ENOENT; } +#if CONFIG_IS_ENABLED(DM_GPIO_LOOKUP_LABEL) +/** + * dm_gpio_lookup_label() - look for name in gpio device + * + * search in uc_priv, if there is a gpio with labelname same + * as name. + * + * @name: name which is searched + * @uc_priv: gpio_dev_priv pointer. + * @offset: gpio offset within the device + * @return: 0 if found, -ENOENT if not. + */ +static int dm_gpio_lookup_label(const char *name, + struct gpio_dev_priv *uc_priv, ulong *offset) +{ + int len; + int i; + + *offset = -1; + len = strlen(name); + for (i = 0; i < uc_priv->gpio_count; i++) { + if (!uc_priv->name[i]) + continue; + if (!strncmp(name, uc_priv->name[i], len)) { + *offset = i; + return 0; + } + } + return -ENOENT; +} +#else +static int +dm_gpio_lookup_label(const char *name, struct gpio_dev_priv *uc_priv, + ulong *offset) +{ + return -ENOENT; +} +#endif + int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc) { struct gpio_dev_priv *uc_priv = NULL; @@ -96,6 +135,13 @@ int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc) if (!strict_strtoul(name + len, 10, &offset)) break; } + + /* + * if we did not found a gpio through its bank + * name, we search for a valid gpio label. + */ + if (!dm_gpio_lookup_label(name, uc_priv, &offset)) + break; } if (!dev) |