mirror of
https://github.com/lm-sensors/lm-sensors.git
synced 2026-10-28 12:40:42 +00:00
Frodo Looijaard
20d42fa180
* Alarms may now work (sound signal disabled, though) * Revision 0x80 should be recognized and handled correctly * If fan unconnected, it should show 0 instead of -1 now Note that this driver will not support GL520SM chips; that chip is different enough that it deserves its own driver. git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@61 7894878c-1315-0410-8ee3-d5d059ff63e0
75 lines
3.8 KiB
Plaintext
75 lines
3.8 KiB
Plaintext
This file documents the gl518sm directories.
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There will be one directory created for each detected GL518SM chip. Chips
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can only be connected to the SMBus. Directories are called
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gl518sm-r??-i2c-?-??, where the first two question marks are the revision
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number, the question mark after i2c equals the I2C bus number, and the I2C
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address is at the end.
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At this moment, revisions 0x00 and 0x80 are known and supported. Revision
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0x00 chips can only display the VIN3 value; revision 0x80 can also
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display the VIN1, VIN2 and VDD values.
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/proc/sys/dev/sensors/chips contains the SYSCTL values for all chip
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directories.
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Within each LM78 directory, you can find the following files:
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* alarms (GL518_SYSCTL_ALARMS)
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A number which indicates which alarms are on. An alarm gets triggered when
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some limit has been crossed. Even if the cause of the alarm is over, it
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stays triggered until it has been read at least once. Because the LM78
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values are updated at most once every 1.5 seconds, this means the alarm
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can be read several times before it is erased.
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This file can not be written to.
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The number is the logical OR of the following components:
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- GL518_ALARM_VDD
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Gets triggered when the VDD value is higher or lower than its limits
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- LM78_ALARM_VIN[1-3]
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Gets triggered when the corresponding VIN value is higher or lower than
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its limits.
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- LM78_ALARM_TEMP
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Gets triggered when the temp value has crossed its limits. See the
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description under temp.
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- LM78_ALARM_FAN[1-2]
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Gets triggered when the corresponding FAN value drops below its limit.
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If accessed through sysctl, this value is a long.
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* fan[1-2] (GL518_SYSCTL_FAN[1-2])
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A list of two numbers. The first is the minimum fan rotation limit; the
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second is the current fan rotation speed. Both are in RPM (rotation per
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minute). An alarm is triggered if the rotation speed drops below the
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limit. The first value can be changed. Not all RPM values can accurately
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be represented, so some rounding is done.
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If accessed through sysctl, this is a list of longs.
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* fan_div (GL518_SYSCTL_FAN_DIV)
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A list of two numbers, one for each fan. Each number can be either 1, 2,
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4 or 8. It is the internal scaling factor used for the FAN rotations. If
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you change this number, the FAN readings get more or less detailed, but
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the range in which they can be read too. Higher numbers give better
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resolution, but less range. The first two numbers can be changed, the
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third not.
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If accessed through sysctl, this is a list of longs.
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* vin[1-3] and vdd (LM78_SYSCTL_VIN[1-3] and GL518_SYSCTL_VDD)
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A list of three numbers. The first is the minimum limit, the second is the
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maximum limit, and the third is the current value. If you have a weird
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mainboard, all values may be off because some other scaling factor has
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to be used; user-space programs should compensate for this. Note that
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minimum means 'closest to zero'; so if the normal value equals -10, a
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minimum could equal -9, and a maximum -11.
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On GL518SM revision 0 chips, only VIN3 is readable; for the others,
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you can set limits, but you can not read the current values.
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The first two numbers can be changed, the third not.
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If accessed through sysctl, this is a list of longs, each being the voltage
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times 100.
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* temp
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A list of three numbers. The first number is the Overtemperature Shutdown
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value; the second is the Hysteris value and the third number is the
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current value. The first two values can be modified. All values are in
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degrees Celcius.
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An alarm is issued when the temperature gets higher then the
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Overtemperature Shutdown value; it stays on until the temperature falls
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below the Hysteris value.
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The first two numbers can be changed, the third not.
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If accessed through sysctl, this is a list of longs, each being the
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temperature times 10.
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The data for each GL518SM is updated each 1.5 seconds, but only if it is
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actually read.
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