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From: Armin Wolf <W_Armin@gmx.de>
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Subject: [PATCH v3 1/2] hwmon: (core) Add support for power fault attribute
Date: Fri, 12 Apr 2024 18:08:56 +0200
Message-Id: <20240412160857.79858-1-W_Armin@gmx.de>
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Power sensor driver might want to signal that the power
value is not usable. Add a new power fault attribute to
report such failures.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
=2D--
Changes since v2:
- added patch
=2D--
 Documentation/ABI/testing/sysfs-class-hwmon | 9 +++++++++
 drivers/hwmon/hwmon.c                       | 1 +
 include/linux/hwmon.h                       | 2 ++
 3 files changed, 12 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-hwmon b/Documentation/A=
BI/testing/sysfs-class-hwmon
index cfd0d0bab483..ed01d43d2491 100644
=2D-- a/Documentation/ABI/testing/sysfs-class-hwmon
+++ b/Documentation/ABI/testing/sysfs-class-hwmon
@@ -882,6 +882,15 @@ Description:

 		RW

+What:		/sys/class/hwmon/hwmonX/powerY_fault
+Description:
+		Reports a power sensor failure.
+
+		- 1: Failed
+		- 0: Ok
+
+		RO
+
 What:		/sys/class/hwmon/hwmonX/powerY_rated_min
 Description:
 		Minimum rated power.
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 3b259c425ab7..6150d64f5c4c 100644
=2D-- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -560,6 +560,7 @@ static const char * const hwmon_power_attr_templates[]=
 =3D {
 	[hwmon_power_crit] =3D "power%d_crit",
 	[hwmon_power_label] =3D "power%d_label",
 	[hwmon_power_alarm] =3D "power%d_alarm",
+	[hwmon_power_fault] =3D "power%d_fault",
 	[hwmon_power_cap_alarm] =3D "power%d_cap_alarm",
 	[hwmon_power_min_alarm] =3D "power%d_min_alarm",
 	[hwmon_power_max_alarm] =3D "power%d_max_alarm",
diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h
index edf96f249eb5..00122e565dbf 100644
=2D-- a/include/linux/hwmon.h
+++ b/include/linux/hwmon.h
@@ -237,6 +237,7 @@ enum hwmon_power_attributes {
 	hwmon_power_max_alarm,
 	hwmon_power_lcrit_alarm,
 	hwmon_power_crit_alarm,
+	hwmon_power_fault,
 	hwmon_power_rated_min,
 	hwmon_power_rated_max,
 };
@@ -270,6 +271,7 @@ enum hwmon_power_attributes {
 #define HWMON_P_MAX_ALARM		BIT(hwmon_power_max_alarm)
 #define HWMON_P_LCRIT_ALARM		BIT(hwmon_power_lcrit_alarm)
 #define HWMON_P_CRIT_ALARM		BIT(hwmon_power_crit_alarm)
+#define HWMON_P_FAULT			BIT(hwmon_power_fault)
 #define HWMON_P_RATED_MIN		BIT(hwmon_power_rated_min)
 #define HWMON_P_RATED_MAX		BIT(hwmon_power_rated_max)

=2D-
2.39.2