diff options
Diffstat (limited to 'drivers/gpio/gpio-uclass.c')
| -rw-r--r-- | drivers/gpio/gpio-uclass.c | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index fde046e8df..1c5e2e7976 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -186,6 +186,34 @@ int gpio_lookup_name(const char *name, struct udevice **devp, return 0; } +unsigned long gpio_flags_xlate(uint32_t arg) +{ + unsigned long flags = 0; + + if (arg & GPIO_ACTIVE_LOW) + flags |= GPIOD_ACTIVE_LOW; + + /* + * need to test 2 bits for gpio output binding: + * OPEN_DRAIN (0x6) = SINGLE_ENDED (0x2) | LINE_OPEN_DRAIN (0x4) + * OPEN_SOURCE (0x2) = SINGLE_ENDED (0x2) | LINE_OPEN_SOURCE (0x0) + */ + if (arg & GPIO_SINGLE_ENDED) { + if (arg & GPIO_LINE_OPEN_DRAIN) + flags |= GPIOD_OPEN_DRAIN; + else + flags |= GPIOD_OPEN_SOURCE; + } + + if (arg & GPIO_PULL_UP) + flags |= GPIOD_PULL_UP; + + if (arg & GPIO_PULL_DOWN) + flags |= GPIOD_PULL_DOWN; + + return flags; +} + int gpio_xlate_offs_flags(struct udevice *dev, struct gpio_desc *desc, struct ofnode_phandle_args *args) { @@ -201,27 +229,7 @@ int gpio_xlate_offs_flags(struct udevice *dev, struct gpio_desc *desc, if (args->args_count < 2) return 0; - desc->flags = 0; - if (args->args[1] & GPIO_ACTIVE_LOW) - desc->flags |= GPIOD_ACTIVE_LOW; - - /* - * need to test 2 bits for gpio output binding: - * OPEN_DRAIN (0x6) = SINGLE_ENDED (0x2) | LINE_OPEN_DRAIN (0x4) - * OPEN_SOURCE (0x2) = SINGLE_ENDED (0x2) | LINE_OPEN_SOURCE (0x0) - */ - if (args->args[1] & GPIO_SINGLE_ENDED) { - if (args->args[1] & GPIO_LINE_OPEN_DRAIN) - desc->flags |= GPIOD_OPEN_DRAIN; - else - desc->flags |= GPIOD_OPEN_SOURCE; - } - - if (args->args[1] & GPIO_PULL_UP) - desc->flags |= GPIOD_PULL_UP; - - if (args->args[1] & GPIO_PULL_DOWN) - desc->flags |= GPIOD_PULL_DOWN; + desc->flags = gpio_flags_xlate(args->args[1]); return 0; } |