From 35c1bfb99fef9c71f9df5c1325db99a79300bc97 Mon Sep 17 00:00:00 2001 From: Nuno Sa Date: Mon, 29 Jan 2024 17:13:24 +0100 Subject: [PATCH] hwmon: add fault attribute for voltage channels Sometimes a voltage channel might have an hard failure (eg: a shorted MOSFET). Hence, add a fault attribute to report such failures. Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240129-b4-ltc4282-support-v4-2-fe75798164cc@analog.com Signed-off-by: Guenter Roeck --- 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/ABI/testing/sysfs-class-hwmon index 3dac923c9b0ef..6c4e68ad4a833 100644 --- a/Documentation/ABI/testing/sysfs-class-hwmon +++ b/Documentation/ABI/testing/sysfs-class-hwmon @@ -149,6 +149,15 @@ Description: RW +What: /sys/class/hwmon/hwmonX/inY_fault +Description: + Reports a voltage hard failure (eg: shorted component) + + - 1: Failed + - 0: Ok + + RO + What: /sys/class/hwmon/hwmonX/cpuY_vid Description: CPU core reference voltage. diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index c7dd3f5b2bd54..18705049ad610 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -510,6 +510,7 @@ static const char * const hwmon_in_attr_templates[] = { [hwmon_in_rated_min] = "in%d_rated_min", [hwmon_in_rated_max] = "in%d_rated_max", [hwmon_in_beep] = "in%d_beep", + [hwmon_in_fault] = "in%d_fault", }; static const char * const hwmon_curr_attr_templates[] = { diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h index c2c0da18dfa36..c7885fdce88f0 100644 --- a/include/linux/hwmon.h +++ b/include/linux/hwmon.h @@ -141,6 +141,7 @@ enum hwmon_in_attributes { hwmon_in_rated_min, hwmon_in_rated_max, hwmon_in_beep, + hwmon_in_fault, }; #define HWMON_I_ENABLE BIT(hwmon_in_enable) @@ -162,6 +163,7 @@ enum hwmon_in_attributes { #define HWMON_I_RATED_MIN BIT(hwmon_in_rated_min) #define HWMON_I_RATED_MAX BIT(hwmon_in_rated_max) #define HWMON_I_BEEP BIT(hwmon_in_beep) +#define HWMON_I_FAULT BIT(hwmon_in_fault) enum hwmon_curr_attributes { hwmon_curr_enable, -- 2.30.2