hwmon: Define a standard interface for chassis intrusion detection

Define a standard interface for the chassis intrusion detection feature
some hardware monitoring chips have. Some drivers have custom sysfs
entries for it, but a standard interface would allow integration with
user-space (namely libsensors.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Acked-by: Matt Roberds <mattroberds@cox.net>

1 files changed, 22 insertions, 0 deletions

diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 6dbfd5efd991..2f10ce6a879f 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -365,6 +365,7 @@ energy[1-*]_input		Cumulative energy use
                                 Unit: microJoule
                                 RO
 
+
 **********
 * Alarms *
 **********
@@ -453,6 +454,27 @@ beep_mask	Bitmask for beep.
                 RW
 
 
+***********************
+* Intrusion detection *
+***********************
+
+intrusion[0-*]_alarm
+                Chassis intrusion detection
+                0: OK
+                1: intrusion detected
+                RW
+                Contrary to regular alarm flags which clear themselves
+                automatically when read, this one sticks until cleared by
+                the user. This is done by writing 0 to the file. Writing
+                other values is unsupported.
+
+intrusion[0-*]_beep
+                Chassis intrusion beep
+                0: disable
+                1: enable
+                RW
+
+
 sysfs attribute writes interpretation
 -------------------------------------