hwmon: (tmp401) Add documentation

[safe/jmp/linux-2.6] / Documentation / hwmon / sysfs-interface

diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 6dbfd5e..dcbd502 100644 (file)
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -70,6 +70,7 @@ are interpreted as 0! For more on how written strings are interpreted see the
 [0-*]  denotes any positive number starting from 0
 [1-*]  denotes any positive number starting from 1
 RO     read only value
+WO     write only value
 RW     read/write value
 
 Read/write values may be read-only for some chips, depending on the
@@ -150,6 +151,11 @@ fan[1-*]_min       Fan minimum value
                Unit: revolution/min (RPM)
                RW
 
+fan[1-*]_max   Fan maximum value
+               Unit: revolution/min (RPM)
+               Only rarely supported by the hardware.
+               RW
+
 fan[1-*]_input Fan input value.
                Unit: revolution/min (RPM)
                RO
@@ -290,6 +296,24 @@ temp[1-*]_label    Suggested temperature channel label.
                user-space.
                RO
 
+temp[1-*]_lowest
+               Historical minimum temperature
+               Unit: millidegree Celsius
+               RO
+
+temp[1-*]_highest
+               Historical maximum temperature
+               Unit: millidegree Celsius
+               RO
+
+temp[1-*]_reset_history
+               Reset temp_lowest and temp_highest
+               WO
+
+temp_reset_history
+               Reset temp_lowest and temp_highest for all sensors
+               WO
+
 Some chips measure temperature using external thermistors and an ADC, and
 report the temperature measurement as a voltage. Converting this voltage
 back to a temperature (or the other way around for limits) requires
@@ -365,6 +389,7 @@ energy[1-*]_input           Cumulative energy use
                                Unit: microJoule
                                RO
 
+
 **********
 * Alarms *
 **********
@@ -389,6 +414,7 @@ OR
 in[0-*]_min_alarm
 in[0-*]_max_alarm
 fan[1-*]_min_alarm
+fan[1-*]_max_alarm
 temp[1-*]_min_alarm
 temp[1-*]_max_alarm
 temp[1-*]_crit_alarm
@@ -453,6 +479,27 @@ 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
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