diff options
Diffstat (limited to 'include/asm-generic/gpio.h')
| -rw-r--r-- | include/asm-generic/gpio.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index de91e57efc..0af599f86d 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -322,6 +322,19 @@ struct gpio_dev_priv { const char *gpio_get_bank_info(struct udevice *dev, int *offset_count); /** + * dm_gpio_lookup_name() - Look up a named GPIO and return its description + * + * The name of a GPIO is typically its bank name followed by a number from 0. + * For example A0 is the first GPIO in bank A. Each bank is a separate driver + * model device. + * + * @name: Name to look up + * @desc: Returns description, on success + * @return 0 if OK, -ve on error + */ +int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc); + +/** * gpio_lookup_name - Look up a GPIO name and return its details * * This is used to convert a named GPIO into a device, offset and GPIO @@ -421,6 +434,18 @@ int gpio_request_list_by_name(struct udevice *dev, const char *list_name, int flags); /** + * dm_gpio_request() - manually request a GPIO + * + * Note: This function should only be used for testing / debugging. Instead. + * use gpio_request_by_name() to pull GPIOs from the device tree. + * + * @desc: GPIO description of GPIO to request (see dm_gpio_lookup_name()) + * @label: Label to attach to the GPIO while claimed + * @return 0 if OK, -ve on error + */ +int dm_gpio_request(struct gpio_desc *desc, const char *label); + +/** * gpio_get_list_count() - Returns the number of GPIOs in a list * * Counts the GPIOs in a list. See gpio_request_by_name() for additional |