mirror of
https://github.com/lm-sensors/lm-sensors.git
synced 2026-10-18 11:09:32 +00:00
Mark D. Studebaker
4572d72782
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1678 7894878c-1315-0410-8ee3-d5d059ff63e0
203 lines
11 KiB
Plaintext
203 lines
11 KiB
Plaintext
Kernel driver `vt8231.o'
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========================
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Status: Beta
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Supported chips:
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* Via VT8231 South Bridge
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Prefix `vt8231'
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Addresses scanned: none, address read from PCI space
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Author: Mark D. Studebaker <mdsxyz123@yahoo.com>
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License: GPL
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Module Parameters
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-----------------
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* force_addr: int
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Initialize the base address of the sensors
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* force: short array (min = 1, max = 48)
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List of adapter,address pairs to boldly assume to be present
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* force_vt8231: short array (min = 1, max = 48)
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List of adapter,address pairs which are unquestionably assumed to contain
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a `vt8231' chip
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* probe: short array (min = 1, max = 48)
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List of adapter,address pairs to scan additionally
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* probe_range: short array (min = 1, max = 48)
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List of adapter,start-addr,end-addr triples to scan additionally
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* ignore: short array (min = 1, max = 48)
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List of adapter,address pairs not to scan
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* ignore_range: short array (min = 1, max = 48)
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List of adapter,start-addr,end-addr triples not to scan
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Description
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-----------
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The Via VT8231 South Bridge contains voltage/temperature monitoring and
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PWM control circuitry for two fans.
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We define the sensors as follows. Somewhat convoluted to minimize
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changes from via686a. Temp1 and in6 are unimplemented in the vt8231
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chip but are included in the driver.
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Sensor Voltage Mode Temp Mode uch_config bit
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------ ------------ --------- --------------
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Reading 1 temp3
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Reading 3 temp1
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UCH1/Reading 2 in0 temp2 0x04 (4)
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UCH2 in1 temp4 0x08 (8)
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UCH3 in2 temp5 0x10 (16)
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UCH4 in3 temp6 0x20 (32)
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UCH5 in4 temp7 0x40 (64)
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3.3V in5
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-12V in6
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As noted above, 5 of the sensors are "universal channels" and can
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be set for either voltage or temperature.
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Set the uch_config bit (in /proc) to 0 for voltage and 1 for temperature.
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Voltages will read 0 if set for temperature.
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Temperatures will read a really low number if set for voltage.
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FAN rotation speeds are reported in RPM (rotations per minute). An alarm is
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triggered if the rotation speed has dropped below a programmable limit. FAN
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readings can be divided by a programmable divider (1, 2, 4 or 8) to give
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the readings more range or accuracy. This is important because some FANs
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report only one 'tick' each rotation, while others report two - making
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all readings twice as high. Not all RPM values can accurately be represented,
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so some rounding is done. With a divider of 2, the lowest representable
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value is around 2600 RPM.
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PWM values are from 0 to 255. The first value in the /proc entry is
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the pwm value; the second is the enable (0 or 1).
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If an alarm triggers, it will remain triggered until the hardware register
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is read at least once. This means that the cause for the alarm may
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already have disappeared! Note that in the current implementation, all
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hardware registers are read whenever any data is read (unless it is less
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than 1.5 seconds since the last update). This means that you can easily
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miss once-only alarms.
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Chip Features
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-------------
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Chip 'vt8231'
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LABEL LABEL CLASS COMPUTE CLASS MODE MAGN
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in0 - - R- 2
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in1 - - R- 2
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in2 - - R- 2
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in3 - - R- 2
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in4 - - R- 2
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in5 - - R- 2
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in6 - - R- 2
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in0_min in0 in0 RW 2
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in1_min in1 in1 RW 2
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in2_min in2 in2 RW 2
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in3_min in3 in3 RW 2
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in4_min in4 in4 RW 2
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in5_min in5 in5 RW 2
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in6_min in6 in6 RW 2
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in0_max in0 in0 RW 2
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in1_max in1 in1 RW 2
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in2_max in2 in2 RW 2
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in3_max in3 in3 RW 2
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in4_max in4 in4 RW 2
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in5_max in5 in5 RW 2
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in6_max in6 in6 RW 2
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fan1 - - R- 0
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fan2 - - R- 0
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fan1_min fan1 fan1 RW 0
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fan2_min fan2 fan2 RW 0
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temp1 - - R- 1
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temp1_hyst temp1 temp1 RW 1
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temp1_over temp1 temp1 RW 1
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temp2 - - R- 1
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temp2_hyst temp2 temp2 RW 1
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temp2_over temp2 temp2 RW 1
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temp3 - - R- 1
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temp3_hyst temp3 temp3 RW 1
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temp3_over temp3 temp3 RW 1
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temp4 - - R- 1
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temp4_hyst temp4 temp4 RW 1
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temp4_over temp4 temp4 RW 1
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temp5 - - R- 1
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temp5_hyst temp5 temp5 RW 1
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temp5_over temp5 temp5 RW 1
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temp6 - - R- 1
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temp6_hyst temp6 temp6 RW 1
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temp6_over temp6 temp6 RW 1
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temp7 - - R- 1
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temp7_hyst temp7 temp7 RW 1
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temp7_over temp7 temp7 RW 1
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fan1_div fan1 - RW 0
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fan2_div fan2 - RW 0
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alarms - - R- 0
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vid - - R- 3
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vrm - - RW 1
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config - - R- 0
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LABEL FEATURE SYMBOL SYSCTL FILE:N
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in0 SENSORS_VT8231_IN0 in0:3
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in1 SENSORS_VT8231_IN1 in1:3
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in2 SENSORS_VT8231_IN2 in2:3
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in3 SENSORS_VT8231_IN3 in3:3
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in4 SENSORS_VT8231_IN4 in4:3
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in5 SENSORS_VT8231_IN5 in5:3
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in6 SENSORS_VT8231_IN6 in6:3
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in0_min SENSORS_VT8231_IN0_MIN in0:1
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in1_min SENSORS_VT8231_IN1_MIN in1:1
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in2_min SENSORS_VT8231_IN2_MIN in2:1
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in3_min SENSORS_VT8231_IN3_MIN in3:1
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in4_min SENSORS_VT8231_IN4_MIN in4:1
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in5_min SENSORS_VT8231_IN5_MIN in5:1
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in6_min SENSORS_VT8231_IN6_MIN in6:1
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in0_max SENSORS_VT8231_IN0_MAX in0:2
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in1_max SENSORS_VT8231_IN1_MAX in1:2
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in2_max SENSORS_VT8231_IN2_MAX in2:2
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in3_max SENSORS_VT8231_IN3_MAX in3:2
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in4_max SENSORS_VT8231_IN4_MAX in4:2
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in5_max SENSORS_VT8231_IN5_MAX in5:2
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in6_max SENSORS_VT8231_IN6_MAX in6:2
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fan1 SENSORS_VT8231_FAN1 fan1:2
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fan2 SENSORS_VT8231_FAN2 fan2:2
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fan1_min SENSORS_VT8231_FAN1_MIN fan1:1
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fan2_min SENSORS_VT8231_FAN2_MIN fan2:1
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temp1 SENSORS_VT8231_TEMP temp1:3
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temp1_hyst SENSORS_VT8231_TEMP_HYST temp1:2
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temp1_over SENSORS_VT8231_TEMP_OVER temp1:1
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temp2 SENSORS_VT8231_TEMP2 temp2:3
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temp2_hyst SENSORS_VT8231_TEMP2_HYST temp2:2
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temp2_over SENSORS_VT8231_TEMP2_OVER temp2:1
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temp3 SENSORS_VT8231_TEMP3 temp3:3
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temp3_hyst SENSORS_VT8231_TEMP3_HYST temp3:2
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temp3_over SENSORS_VT8231_TEMP3_OVER temp3:1
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temp4 SENSORS_VT8231_TEMP4 temp4:3
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temp4_hyst SENSORS_VT8231_TEMP4_HYST temp4:2
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temp4_over SENSORS_VT8231_TEMP4_OVER temp4:1
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temp5 SENSORS_VT8231_TEMP5 temp5:3
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temp5_hyst SENSORS_VT8231_TEMP5_HYST temp5:2
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temp5_over SENSORS_VT8231_TEMP5_OVER temp5:1
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temp6 SENSORS_VT8231_TEMP6 temp6:3
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temp6_hyst SENSORS_VT8231_TEMP6_HYST temp6:2
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temp6_over SENSORS_VT8231_TEMP6_OVER temp6:1
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temp7 SENSORS_VT8231_TEMP7 temp7:3
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temp7_hyst SENSORS_VT8231_TEMP7_HYST temp7:2
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temp7_over SENSORS_VT8231_TEMP7_OVER temp7:1
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fan1_div SENSORS_VT8231_FAN1_DIV fan_div:1
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fan2_div SENSORS_VT8231_FAN2_DIV fan_div:2
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alarms SENSORS_VT8231_ALARMS alarms:1
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vid SENSORS_VT8231_VID vid:1
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vrm SENSORS_VT8231_VRM vrm:1
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config SENSORS_VT8231_UCH uch_config:1
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Notes
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-----
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The lm_sensors project gratefully acknowledges the support of Via in the
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development of this driver.
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