Some pin configurations IP allows to set the current output to the pin.
This patch adds such a parameter to the pinconf-generic mechanism.

This parameter takes as argument the drive strength in mA.

Signed-off-by: Maxime Ripard <[email protected]>
---
 include/linux/pinctrl/pinconf-generic.h |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/pinctrl/pinconf-generic.h 
b/include/linux/pinctrl/pinconf-generic.h
index 47a1bdd..c533789 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -46,6 +46,8 @@
  * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source
  *     (open emitter). Sending this config will enabale open drain mode, the
  *     argument is ignored.
+ * @PIN_CONFIG_DRIVE_STRENGTH: the pin will output the current passed as
+ *     argument. The argument is in mA.
  * @PIN_CONFIG_INPUT_SCHMITT_DISABLE: disable schmitt-trigger mode on the pin.
  * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in
  *     schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis,
@@ -74,6 +76,7 @@ enum pin_config_param {
        PIN_CONFIG_DRIVE_PUSH_PULL,
        PIN_CONFIG_DRIVE_OPEN_DRAIN,
        PIN_CONFIG_DRIVE_OPEN_SOURCE,
+       PIN_CONFIG_DRIVE_STRENGTH,
        PIN_CONFIG_INPUT_SCHMITT_DISABLE,
        PIN_CONFIG_INPUT_SCHMITT,
        PIN_CONFIG_INPUT_DEBOUNCE,
-- 
1.7.10.4

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