pinctrl: generic: add input schmitt disable parameter

In Marvell PXA/MMP silicons, input schmitt disable value is 0x40, not 0.
So append new config parameter -- input schmitt disable.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index 33fbaea..833a364 100644 (file)
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -41,6 +41,7 @@ struct pin_config_item conf_items[] = {
        PCONFDUMP(PIN_CONFIG_DRIVE_PUSH_PULL, "output drive push pull", NULL),
        PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_DRAIN, "output drive open drain", NULL),
        PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_SOURCE, "output drive open source", NULL),
+       PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_DISABLE, "input schmitt disabled", NULL),
        PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL),
        PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE, "input debounce", "time units"),
        PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector"),

diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index 4f0abb9..47a1bdd 100644 (file)
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -46,11 +46,11 @@
  * @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_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,
  *     the threshold value is given on a custom format as argument when
- *     setting pins to this mode. The argument zero turns the schmitt trigger
- *     off.
+ *     setting pins to this mode.
  * @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 on a custom format. Setting the
@@ -74,6 +74,7 @@ enum pin_config_param {
        PIN_CONFIG_DRIVE_PUSH_PULL,
        PIN_CONFIG_DRIVE_OPEN_DRAIN,
        PIN_CONFIG_DRIVE_OPEN_SOURCE,
+       PIN_CONFIG_INPUT_SCHMITT_DISABLE,
        PIN_CONFIG_INPUT_SCHMITT,
        PIN_CONFIG_INPUT_DEBOUNCE,
        PIN_CONFIG_POWER_SOURCE,