pinctrl: pinconf-generic: Add support for "input-schmitt-microvolt" property

Add "input-schmitt-microvolt" property to generic options used for DT
parsing files. This enables drivers, which use generic pin configurations,
to get the value passed to this property.

Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Link: https://lore.kernel.org/IA1PR20MB4953806785BA04E075DC4F03BBAC2@IA1PR20MB4953.namprd20.prod.outlook.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 a499b8af5c1f197303cd116b57fbf5282b614324..0b13d7f17b32563ca82ef8c428920cea8bf14618 100644 (file)
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -44,6 +44,7 @@ static const struct pin_config_item conf_items[] = {
        PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE, "input debounce", "usec", true),
        PCONFDUMP(PIN_CONFIG_INPUT_ENABLE, "input enabled", NULL, false),
        PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL, false),
+       PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_UV, "input schmitt threshold", "uV", true),
        PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_ENABLE, "input schmitt enabled", NULL, false),
        PCONFDUMP(PIN_CONFIG_MODE_LOW_POWER, "pin low power", "mode", true),
        PCONFDUMP(PIN_CONFIG_OUTPUT_ENABLE, "output enabled", NULL, false),
@@ -177,6 +178,7 @@ static const struct pinconf_generic_params dt_params[] = {
        { "input-schmitt", PIN_CONFIG_INPUT_SCHMITT, 0 },
        { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 },
        { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
+       { "input-schmitt-microvolts", PIN_CONFIG_INPUT_SCHMITT_UV, 0 },
        { "low-power-disable", PIN_CONFIG_MODE_LOW_POWER, 0 },
        { "low-power-enable", PIN_CONFIG_MODE_LOW_POWER, 1 },
        { "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },

diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index a65d3d078e58ba6c9b70bd349f9687b649d3f35e..53cfde98433d8e5fc0a3e4e4b734a9ddb3311131 100644 (file)
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -81,6 +81,8 @@ struct pinctrl_map;
  * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin.
  *      If the argument != 0, schmitt-trigger mode is enabled. If it's 0,
  *      schmitt-trigger mode is disabled.
+ * @PIN_CONFIG_INPUT_SCHMITT_UV: this will configure an input pin to run in
+ *     schmitt-trigger mode. The argument is in uV.
  * @PIN_CONFIG_MODE_LOW_POWER: this will configure the pin for low power
  *     operation, if several modes of operation are supported these can be
  *     passed in the argument on a custom form, else just use argument 1
@@ -132,6 +134,7 @@ enum pin_config_param {
        PIN_CONFIG_INPUT_ENABLE,
        PIN_CONFIG_INPUT_SCHMITT,
        PIN_CONFIG_INPUT_SCHMITT_ENABLE,
+       PIN_CONFIG_INPUT_SCHMITT_UV,
        PIN_CONFIG_MODE_LOW_POWER,
        PIN_CONFIG_MODE_PWM,
        PIN_CONFIG_OUTPUT,