hwmon: (core) Add support for humidity min/max alarm

Add min_alarm and max_alarm attributes for humidityX to support devices
that can generate these alarms.
Such attributes already exist for other magnitudes such as tempX.

Tested with a ChipCap 2 temperature-humidity sensor.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240130-topic-chipcap2-v6-2-260bea05cf9b@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 18705049ad610e8ceb781993478782ed1d9090e0..3b259c425ab701e36397da5fe88dfb2197f49fa6 100644 (file)
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -587,6 +587,8 @@ static const char * const hwmon_humidity_attr_templates[] = {
        [hwmon_humidity_fault] = "humidity%d_fault",
        [hwmon_humidity_rated_min] = "humidity%d_rated_min",
        [hwmon_humidity_rated_max] = "humidity%d_rated_max",
+       [hwmon_humidity_min_alarm] = "humidity%d_min_alarm",
+       [hwmon_humidity_max_alarm] = "humidity%d_max_alarm",
 };
 
 static const char * const hwmon_fan_attr_templates[] = {

diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h
index c7885fdce88f09675dd1733882e907afbda2c512..edf96f249eb50ad540d99990dfa211691cbb0554 100644 (file)
--- a/include/linux/hwmon.h
+++ b/include/linux/hwmon.h
@@ -295,6 +295,8 @@ enum hwmon_humidity_attributes {
        hwmon_humidity_fault,
        hwmon_humidity_rated_min,
        hwmon_humidity_rated_max,
+       hwmon_humidity_min_alarm,
+       hwmon_humidity_max_alarm,
 };
 
 #define HWMON_H_ENABLE                 BIT(hwmon_humidity_enable)
@@ -308,6 +310,8 @@ enum hwmon_humidity_attributes {
 #define HWMON_H_FAULT                  BIT(hwmon_humidity_fault)
 #define HWMON_H_RATED_MIN              BIT(hwmon_humidity_rated_min)
 #define HWMON_H_RATED_MAX              BIT(hwmon_humidity_rated_max)
+#define HWMON_H_MIN_ALARM              BIT(hwmon_humidity_min_alarm)
+#define HWMON_H_MAX_ALARM              BIT(hwmon_humidity_max_alarm)
 
 enum hwmon_fan_attributes {
        hwmon_fan_enable,