This configuration is intended to be used to allow a pin controller based
GPIO driver to obtain a value at a gpio input pin.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@xxxxxxxxxx>
---
RFC v2 (Oct 5, 2023)
* improve a comment against @PIN_CONFIG_INPUT as per Linus
RFC(Oct 2, 2023)
---
include/linux/pinctrl/pinconf-generic.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index d74b7a4ea154..da0d80aa532d 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -67,6 +67,10 @@ struct pinctrl_map;
* passed as argument. The argument is in mA.
* @PIN_CONFIG_DRIVE_STRENGTH_UA: the pin will sink or source at most the current
* passed as argument. The argument is in uA.
+ * @PIN_CONFIG_INPUT: This will obtain a value on an input pin. To put a line
+ * into input mode, @PIN_CONFIG_INPUT_ENABLE must be used. Otherwise,
+ * an error will be returned. The returned argument is 1 for logic high
+ * and 0 for logic low.
* @PIN_CONFIG_INPUT_DEBOUNCE: this will configure the pin to debounce mode,
* which means it will wait for signals to settle when reading inputs. The
* argument gives the debounce time in usecs. Setting the
@@ -128,6 +132,7 @@ enum pin_config_param {
PIN_CONFIG_DRIVE_PUSH_PULL,
PIN_CONFIG_DRIVE_STRENGTH,
PIN_CONFIG_DRIVE_STRENGTH_UA,
+ PIN_CONFIG_INPUT,
PIN_CONFIG_INPUT_DEBOUNCE,
PIN_CONFIG_INPUT_ENABLE,
PIN_CONFIG_INPUT_SCHMITT,
--
2.34.1
