diff options
Diffstat (limited to 'drivers/gpio/gpio-uclass.c')
| -rw-r--r-- | drivers/gpio/gpio-uclass.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index b58d4e64e8..732b6c2afa 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -6,6 +6,7 @@ #include <common.h> #include <dm.h> +#include <dt-bindings/gpio/gpio.h> #include <errno.h> #include <fdtdec.h> #include <malloc.h> @@ -113,19 +114,33 @@ int gpio_lookup_name(const char *name, struct udevice **devp, return 0; } +int gpio_xlate_offs_flags(struct udevice *dev, + struct gpio_desc *desc, + struct fdtdec_phandle_args *args) +{ + if (args->args_count < 1) + return -EINVAL; + + desc->offset = args->args[0]; + + if (args->args_count < 2) + return 0; + + if (args->args[1] & GPIO_ACTIVE_LOW) + desc->flags = GPIOD_ACTIVE_LOW; + + return 0; +} + static int gpio_find_and_xlate(struct gpio_desc *desc, struct fdtdec_phandle_args *args) { struct dm_gpio_ops *ops = gpio_get_ops(desc->dev); - /* Use the first argument as the offset by default */ - if (args->args_count > 0) - desc->offset = args->args[0]; + if (ops->xlate) + return ops->xlate(desc->dev, desc, args); else - desc->offset = -1; - desc->flags = 0; - - return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0; + return gpio_xlate_offs_flags(desc->dev, desc, args); } int dm_gpio_request(struct gpio_desc *desc, const char *label) @@ -605,6 +620,7 @@ static int _gpio_request_by_name_nodev(const void *blob, int node, desc->dev = NULL; desc->offset = 0; + desc->flags = 0; ret = fdtdec_parse_phandle_with_args(blob, node, list_name, "#gpio-cells", 0, index, &args); if (ret) { |