diff options
| -rw-r--r-- | drivers/pinctrl/pinctrl-uclass.c | 10 | ||||
| -rw-r--r-- | include/dm/pinctrl.h | 32 |
2 files changed, 42 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c index 1acbfafa81..ccc5d309d6 100644 --- a/drivers/pinctrl/pinctrl-uclass.c +++ b/drivers/pinctrl/pinctrl-uclass.c @@ -246,6 +246,16 @@ int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph) return ops->get_periph_id(dev, periph); } +int pinctrl_get_gpio_mux(struct udevice *dev, int banknum, int index) +{ + struct pinctrl_ops *ops = pinctrl_get_ops(dev); + + if (!ops->get_gpio_mux) + return -ENOSYS; + + return ops->get_gpio_mux(dev, banknum, index); +} + /** * pinconfig_post-bind() - post binding for PINCTRL uclass * Recursively bind child nodes as pinconfig devices in case of full pinctrl. diff --git a/include/dm/pinctrl.h b/include/dm/pinctrl.h index 5cd45038eb..0eb4b924d4 100644 --- a/include/dm/pinctrl.h +++ b/include/dm/pinctrl.h @@ -114,6 +114,22 @@ struct pinctrl_ops { * @return peripheral ID of @periph, or -ENOENT on error */ int (*get_periph_id)(struct udevice *dev, struct udevice *periph); + + /** + * get_gpio_mux() - get the mux value for a particular GPIO + * + * This allows the raw mux value for a GPIO to be obtained. It is + * useful for displaying the function being used by that GPIO, such + * as with the 'gpio' command. This function is internal to the GPIO + * subsystem and should not be used by generic code. Typically it is + * used by a GPIO driver with knowledge of the SoC pinctrl setup. + * + * @dev: Pinctrl device to use + * @banknum: GPIO bank number + * @index: GPIO index within the bank + * @return mux value (SoC-specific, e.g. 0 for input, 1 for output) + */ + int (*get_gpio_mux)(struct udevice *dev, int banknum, int index); }; #define pinctrl_get_ops(dev) ((struct pinctrl_ops *)(dev)->driver->ops) @@ -297,4 +313,20 @@ int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph); */ int pinctrl_decode_pin_config(const void *blob, int node); +/** + * pinctrl_get_gpio_mux() - get the mux value for a particular GPIO + * + * This allows the raw mux value for a GPIO to be obtained. It is + * useful for displaying the function being used by that GPIO, such + * as with the 'gpio' command. This function is internal to the GPIO + * subsystem and should not be used by generic code. Typically it is + * used by a GPIO driver with knowledge of the SoC pinctrl setup. + * + * @dev: Pinctrl device to use + * @banknum: GPIO bank number + * @index: GPIO index within the bank + * @return mux value (SoC-specific, e.g. 0 for input, 1 for output) +*/ +int pinctrl_get_gpio_mux(struct udevice *dev, int banknum, int index); + #endif /* __PINCTRL_H */ |
