From: Nuno Sa <nuno.sa@analog.com>
To: <linux-hwmon@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-doc@vger.kernel.org>
Cc: Jean Delvare <jdelvare@suse.com>,
Guenter Roeck <linux@roeck-us.net>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Jonathan Corbet <corbet@lwn.net>
Subject: [PATCH RESEND v4 2/3] hwmon: add fault attribute for voltage channels
Date: Mon, 29 Jan 2024 17:13:24 +0100 [thread overview]
Message-ID: <20240129-b4-ltc4282-support-v4-2-fe75798164cc@analog.com> (raw)
In-Reply-To: <20240129-b4-ltc4282-support-v4-0-fe75798164cc@analog.com>
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 <nuno.sa@analog.com>
---
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 3dac923c9b0e..6c4e68ad4a83 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 c7dd3f5b2bd5..18705049ad61 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 c2c0da18dfa3..c7885fdce88f 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,
--
2.43.0
next prev parent reply other threads:[~2024-01-29 16:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-29 16:13 [PATCH RESEND v4 0/3] Add support for LTC4282 Nuno Sa
2024-01-29 16:13 ` [PATCH RESEND v4 1/3] dt-bindings: hwmon: Add LTC4282 bindings Nuno Sa
2024-01-29 16:13 ` Nuno Sa [this message]
2024-01-29 16:13 ` [PATCH RESEND v4 3/3] hwmon: ltc4282: add support for the LTC4282 chip Nuno Sa
2024-01-31 0:01 ` [PATCH RESEND v4 0/3] Add support for LTC4282 Guenter Roeck
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