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W83781D documentation update
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@411 7894878c-1315-0410-8ee3-d5d059ff63e0
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Frodo Looijaard committed
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Kernel driver `w83781d.o'
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=========================
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Status: W83781D support is complete and well-tested, others are mostly complete
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and somewhat tested.
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Supported chips:
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* Winbond W83781D
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Prefix 'w83781d'
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Addresses scanned: I2C 0x20 - 0x2f (inclusive), ISA 0x290 (8 I/O ports)
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Datasheet: Publicly available at the Winbond website
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* Winbond W83782D
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Prefix 'w83782d'
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Addresses scanned: I2C 0x20 - 0x2f (inclusive), ISA 0x290 (8 I/O ports)
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Datasheet: Available on request from Winbond
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* Winbond W83783S
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Prefix 'w83783s'
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Addresses scanned: I2C 0x20 - 0x2f (inclusive)
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Datasheet: Available on request from Winbond
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Author: Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock <phil@netroedge.com>,
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and Mark Studebaker <mds@eng.paradyne.com>
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Module Parameters
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-----------------
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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_w83781d: 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 `w83781d' chip
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* force_w83782d: 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 `w83782d' chip
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* force_w83783s: 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 `w83783s' chip
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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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* 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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Description
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-----------
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This driver implements support for the Winbond W83781D, W83782D and W83783S.
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We will refer to them collectively as W8378* chips.
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There is quite some difference between these chips, but they are similar
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enough that it was sensible to put them together in one driver.
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Detection of these chips can sometimes be foiled because they can be in
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an internal state that allows no clean access. If you know the address
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of the chip, use a 'force' parameter; this will put them into a more
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well-behaved state first.
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The W8378* implements temperature sensors (three on the W83781D and W83782D,
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two on the W83783S), three FAN rotation speed sensors, voltage sensors
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(seven on the W83781D, nine on the W83782D and six on the W83783S), VID
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lines, alarms with beep warnings, and some miscellaneous stuff.
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Temperatures are measured in degrees Celcius. There is always one main
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temperature sensor, and one (W83783S) or two (W83781D and W83782D) other
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sensors. An alarm is triggered for the main sensor once when the
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Overtemperature Shutdown limit is crossed; it is triggered again as soon as
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it drops below the Hysteris value. A more useful behaviour
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can be found by setting the Hysteris value to +127 degrees Celcius; in
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this case, alarms are issued during all the time when the actual temperature
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is above the Overtemperature Shutdown value. For the other sensor(s), an
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alarm is triggered when the temperature gets higher then the Overtemperature
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Shutdown value; it stays on until the temperature falls below the Hysteris
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value. But on the W83781D, there is only one alarm that functions for both
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other sensors! Temperatures are guaranteed within a range of -55 to +125
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degrees. The main temperature sensors has a resolution of 1 degree; the other
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sensor(s) of 0.5 degree.
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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 for the
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W83781D; 1, 2, 4, 8, 16, 32, 64 or 128 for the W83782D and W83783S) 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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Voltage sensors (also known as IN sensors) report their values in volts.
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An alarm is triggered if the voltage has crossed a programmable minimum
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or maximum limit. Note that minimum in this case always means 'closest to
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zero'; this is important for negative voltage measurements. All voltage
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inputs can measure voltages between 0 and 4.08 volts, with a resolution
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of 0.016 volt.
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The VID lines encode the core voltage value: the voltage level your processor
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should work with. This is hardcoded by the mainboard and/or processor itself.
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It is a value in volts. When it is unconnected, you will often find the
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value 3.50 V here.
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The W83782D and W83783S temperature conversion machine understands about
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several kinds of temperature probes. You can program the so-called
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beta value in the sensor files. '1' is the PII/Celeron diode, '2' is the
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TN3904 transistor, and 3435 the default thermistor value. Other values
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are (not yet) supported. You can program your own values through the
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rt interface, but this is not very useful, because these tables are
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under NDA.
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In addition to the alarms described above, there is a CHAS alarm on the
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W83781D and W83782D which triggers if your computer case is open.
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When an alarm goes off, you can be warned by a beeping signal through
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your computer speaker. It is possible to enable all beeping globally,
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or only the beeping for some alarms.
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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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The W8378* only updates its values each 1.5 seconds; reading it more often
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will do no harm, but will return 'old' values.
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Chip Features
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-------------
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Chip `w83781d'
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LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
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in0 NONE NONE R 2
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in1 NONE NONE R 2
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in2 NONE NONE R 2
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in3 NONE NONE R 2
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in4 NONE NONE R 2
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in5 NONE NONE R 2
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in6 NONE NONE 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 NONE NONE R 0
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fan2 NONE NONE R 0
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fan3 NONE NONE R 0
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fan1_min fan1 NONE RW 0
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fan2_min fan2 NONE RW 0
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fan3_min fan3 NONE RW 0
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temp1 NONE NONE 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 NONE NONE 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 NONE NONE 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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vid NONE NONE R 2
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fan1_div fan1 NONE RW 0
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fan2_div fan2 NONE RW 0
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fan3_div fan3 NONE R 0
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alarms NONE NONE R 0
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beep_enable alarms NONE RW 0
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beeps alarms alarms RW 0
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LABEL FEATURE SYMBOL SYSCTL FILE:NR
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in0 SENSORS_W83781D_IN0 in0:3
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in1 SENSORS_W83781D_IN1 in1:3
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in2 SENSORS_W83781D_IN2 in2:3
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in3 SENSORS_W83781D_IN3 in3:3
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in4 SENSORS_W83781D_IN4 in4:3
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in5 SENSORS_W83781D_IN5 in5:3
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in6 SENSORS_W83781D_IN6 in6:3
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in0_min SENSORS_W83781D_IN0_MIN in0:1
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in1_min SENSORS_W83781D_IN1_MIN in1:1
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in2_min SENSORS_W83781D_IN2_MIN in2:1
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in3_min SENSORS_W83781D_IN3_MIN in3:1
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in4_min SENSORS_W83781D_IN4_MIN in4:1
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in5_min SENSORS_W83781D_IN5_MIN in5:1
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in6_min SENSORS_W83781D_IN6_MIN in6:1
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in0_max SENSORS_W83781D_IN0_MAX in0:2
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in1_max SENSORS_W83781D_IN1_MAX in1:2
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in2_max SENSORS_W83781D_IN2_MAX in2:2
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in3_max SENSORS_W83781D_IN3_MAX in3:2
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in4_max SENSORS_W83781D_IN4_MAX in4:2
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in5_max SENSORS_W83781D_IN5_MAX in5:2
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in6_max SENSORS_W83781D_IN6_MAX in6:2
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fan1 SENSORS_W83781D_FAN1 fan1:2
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fan2 SENSORS_W83781D_FAN2 fan2:2
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fan3 SENSORS_W83781D_FAN3 fan3:2
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fan1_min SENSORS_W83781D_FAN1_MIN fan1:1
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fan2_min SENSORS_W83781D_FAN2_MIN fan2:1
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fan3_min SENSORS_W83781D_FAN3_MIN fan3:1
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temp1 SENSORS_W83781D_TEMP1 temp1:3
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temp1_hyst SENSORS_W83781D_TEMP1_HYST temp1:2
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temp1_over SENSORS_W83781D_TEMP1_OVER temp1:1
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temp2 SENSORS_W83781D_TEMP2 temp2:3
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temp2_hyst SENSORS_W83781D_TEMP2_HYST temp2:2
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temp2_over SENSORS_W83781D_TEMP2_OVER temp2:1
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temp3 SENSORS_W83781D_TEMP3 temp3:3
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temp3_hyst SENSORS_W83781D_TEMP3_HYST temp3:2
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temp3_over SENSORS_W83781D_TEMP3_OVER temp3:1
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vid SENSORS_W83781D_VID vid:1
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fan1_div SENSORS_W83781D_FAN1_DIV fan_div:1
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fan2_div SENSORS_W83781D_FAN2_DIV fan_div:2
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fan3_div SENSORS_W83781D_FAN3_DIV fan_div:3
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alarms SENSORS_W83781D_ALARMS alarms:1
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beep_enable SENSORS_W83781D_BEEP_ENABLE beep:1
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beeps SENSORS_W83781D_BEEPS beep:2
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Chip `w83782d'
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LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
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in0 NONE NONE R 2
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in1 NONE NONE R 2
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in2 NONE NONE R 2
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in3 NONE NONE R 2
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in4 NONE NONE R 2
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in5 NONE NONE R 2
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in6 NONE NONE R 2
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in7 NONE NONE R 2
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in8 NONE NONE 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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in7_min in7 in7 RW 2
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in8_min in8 in8 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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in7_max in7 in7 RW 2
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in8_max in8 in8 RW 2
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fan1 NONE NONE R 0
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fan2 NONE NONE R 0
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fan3 NONE NONE R 0
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fan1_min fan1 NONE RW 0
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fan2_min fan2 NONE RW 0
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fan3_min fan3 NONE RW 0
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temp1 NONE NONE 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 NONE NONE 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 NONE NONE 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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||||
vid NONE NONE R 2
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||||
fan1_div fan1 NONE RW 0
|
||||
fan2_div fan2 NONE RW 0
|
||||
fan3_div fan3 NONE R 0
|
||||
alarms NONE NONE R 0
|
||||
beep_enable alarms NONE RW 0
|
||||
beeps alarms alarms RW 0
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||||
sensor1 NONE NONE RW 0
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||||
sensor2 NONE NONE RW 0
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||||
sensor3 NONE NONE RW 0
|
||||
|
||||
LABEL FEATURE SYMBOL SYSCTL FILE:NR
|
||||
in0 SENSORS_W83782D_IN0 in0:3
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in1 SENSORS_W83782D_IN1 in1:3
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||||
in2 SENSORS_W83782D_IN2 in2:3
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||||
in3 SENSORS_W83782D_IN3 in3:3
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in4 SENSORS_W83782D_IN4 in4:3
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||||
in5 SENSORS_W83782D_IN5 in5:3
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||||
in6 SENSORS_W83782D_IN6 in6:3
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||||
in7 SENSORS_W83782D_IN7 in7:3
|
||||
in8 SENSORS_W83782D_IN8 in8:3
|
||||
in0_min SENSORS_W83782D_IN0_MIN in0:1
|
||||
in1_min SENSORS_W83782D_IN1_MIN in1:1
|
||||
in2_min SENSORS_W83782D_IN2_MIN in2:1
|
||||
in3_min SENSORS_W83782D_IN3_MIN in3:1
|
||||
in4_min SENSORS_W83782D_IN4_MIN in4:1
|
||||
in5_min SENSORS_W83782D_IN5_MIN in5:1
|
||||
in6_min SENSORS_W83782D_IN6_MIN in6:1
|
||||
in7_min SENSORS_W83782D_IN7_MIN in7:1
|
||||
in8_min SENSORS_W83782D_IN8_MIN in8:1
|
||||
in0_max SENSORS_W83782D_IN0_MAX in0:2
|
||||
in1_max SENSORS_W83782D_IN1_MAX in1:2
|
||||
in2_max SENSORS_W83782D_IN2_MAX in2:2
|
||||
in3_max SENSORS_W83782D_IN3_MAX in3:2
|
||||
in4_max SENSORS_W83782D_IN4_MAX in4:2
|
||||
in5_max SENSORS_W83782D_IN5_MAX in5:2
|
||||
in6_max SENSORS_W83782D_IN6_MAX in6:2
|
||||
in7_max SENSORS_W83782D_IN7_MAX in7:2
|
||||
in8_max SENSORS_W83782D_IN8_MAX in8:2
|
||||
fan1 SENSORS_W83782D_FAN1 fan1:2
|
||||
fan2 SENSORS_W83782D_FAN2 fan2:2
|
||||
fan3 SENSORS_W83781D_FAN3 fan3:2
|
||||
fan1_min SENSORS_W83782D_FAN1_MIN fan1:1
|
||||
fan2_min SENSORS_W83782D_FAN2_MIN fan2:1
|
||||
fan3_min SENSORS_W83781D_FAN3_MIN fan3:1
|
||||
temp1 SENSORS_W83782D_TEMP1 temp1:3
|
||||
temp1_hyst SENSORS_W83782D_TEMP1_HYST temp1:2
|
||||
temp1_over SENSORS_W83782D_TEMP1_OVER temp1:1
|
||||
temp2 SENSORS_W83782D_TEMP2 temp2:3
|
||||
temp2_hyst SENSORS_W83782D_TEMP2_HYST temp2:2
|
||||
temp2_over SENSORS_W83782D_TEMP2_OVER temp2:1
|
||||
temp3 SENSORS_W83782D_TEMP3 temp3:3
|
||||
temp3_hyst SENSORS_W83782D_TEMP3_HYST temp3:2
|
||||
temp3_over SENSORS_W83782D_TEMP3_OVER temp3:1
|
||||
vid SENSORS_W83782D_VID vid:1
|
||||
fan1_div SENSORS_W83782D_FAN1_DIV fan_div:1
|
||||
fan2_div SENSORS_W83782D_FAN2_DIV fan_div:2
|
||||
fan3_div SENSORS_W83781D_FAN3_DIV fan_div:3
|
||||
alarms SENSORS_W83782D_ALARMS alarms:1
|
||||
beep_enable SENSORS_W83782D_BEEP_ENABLE beep:1
|
||||
beeps SENSORS_W83782D_BEEPS beep:2
|
||||
sensor1 SENSORS_W83782D_SENS1 sensor1:1
|
||||
sensor2 SENSORS_W83782D_SENS2 sensor2:1
|
||||
sensor3 SENSORS_W83782D_SENS3 sensor3:1
|
||||
|
||||
|
||||
Chip `w83783s'
|
||||
LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
|
||||
in0 NONE NONE R 2
|
||||
in1 NONE NONE R 2
|
||||
in2 NONE NONE R 2
|
||||
in3 NONE NONE R 2
|
||||
in4 NONE NONE R 2
|
||||
in5 NONE NONE R 2
|
||||
in6 NONE NONE R 2
|
||||
in0_min in0 in0 RW 2
|
||||
in1_min in1 in1 RW 2
|
||||
in2_min in2 in2 RW 2
|
||||
in3_min in3 in3 RW 2
|
||||
in4_min in4 in4 RW 2
|
||||
in5_min in5 in5 RW 2
|
||||
in6_min in6 in6 RW 2
|
||||
in0_max in0 in0 RW 2
|
||||
in1_max in1 in1 RW 2
|
||||
in2_max in2 in2 RW 2
|
||||
in3_max in3 in3 RW 2
|
||||
in4_max in4 in4 RW 2
|
||||
in5_max in5 in5 RW 2
|
||||
in6_max in6 in6 RW 2
|
||||
fan1 NONE NONE R 0
|
||||
fan2 NONE NONE R 0
|
||||
fan3 NONE NONE R 0
|
||||
fan1_min fan1 NONE RW 0
|
||||
fan2_min fan2 NONE RW 0
|
||||
fan3_min fan3 NONE RW 0
|
||||
temp1 NONE NONE R 1
|
||||
temp1_hyst temp1 temp1 RW 1
|
||||
temp1_over temp1 temp1 RW 1
|
||||
temp2 NONE NONE R 1
|
||||
temp2_hyst temp2 temp2 RW 1
|
||||
temp2_over temp2 temp2 RW 1
|
||||
vid NONE NONE R 2
|
||||
fan1_div fan1 NONE RW 0
|
||||
fan2_div fan2 NONE RW 0
|
||||
fan3_div fan3 NONE R 0
|
||||
alarms NONE NONE R 0
|
||||
beep_enable alarms NONE RW 0
|
||||
beeps alarms alarms RW 0
|
||||
sensor1 NONE NONE RW 0
|
||||
sensor2 NONE NONE RW 0
|
||||
|
||||
LABEL FEATURE SYMBOL SYSCTL FILE:NR
|
||||
in0 SENSORS_W83783S_IN0 in0:3
|
||||
in1 SENSORS_W83783S_IN1 in1:3
|
||||
in2 SENSORS_W83783S_IN2 in2:3
|
||||
in3 SENSORS_W83783S_IN3 in3:3
|
||||
in4 SENSORS_W83783S_IN4 in4:3
|
||||
in5 SENSORS_W83783S_IN5 in5:3
|
||||
in6 SENSORS_W83783S_IN6 in6:3
|
||||
in0_min SENSORS_W83783S_IN0_MIN in0:1
|
||||
in1_min SENSORS_W83783S_IN1_MIN in1:1
|
||||
in2_min SENSORS_W83783S_IN2_MIN in2:1
|
||||
in3_min SENSORS_W83783S_IN3_MIN in3:1
|
||||
in4_min SENSORS_W83783S_IN4_MIN in4:1
|
||||
in5_min SENSORS_W83783S_IN5_MIN in5:1
|
||||
in6_min SENSORS_W83783S_IN6_MIN in6:1
|
||||
in0_max SENSORS_W83783S_IN0_MAX in0:2
|
||||
in1_max SENSORS_W83783S_IN1_MAX in1:2
|
||||
in2_max SENSORS_W83783S_IN2_MAX in2:2
|
||||
in3_max SENSORS_W83783S_IN3_MAX in3:2
|
||||
in4_max SENSORS_W83783S_IN4_MAX in4:2
|
||||
in5_max SENSORS_W83783S_IN5_MAX in5:2
|
||||
in6_max SENSORS_W83783S_IN6_MAX in6:2
|
||||
fan1 SENSORS_W83783S_FAN1 fan1:2
|
||||
fan2 SENSORS_W83783S_FAN2 fan2:2
|
||||
fan3 SENSORS_W83783S_FAN3 fan3:2
|
||||
fan1_min SENSORS_W83783S_FAN1_MIN fan1:1
|
||||
fan2_min SENSORS_W83783S_FAN2_MIN fan2:1
|
||||
fan3_min SENSORS_W83783S_FAN3_MIN fan3:1
|
||||
temp1 SENSORS_W83783S_TEMP1 temp1:3
|
||||
temp1_hyst SENSORS_W83783S_TEMP1_HYST temp1:2
|
||||
temp1_over SENSORS_W83783S_TEMP1_OVER temp1:1
|
||||
temp2 SENSORS_W83783S_TEMP2 temp2:3
|
||||
temp2_hyst SENSORS_W83783S_TEMP2_HYST temp2:2
|
||||
temp2_over SENSORS_W83783S_TEMP2_OVER temp2:1
|
||||
vid SENSORS_W83783S_VID vid:1
|
||||
fan1_div SENSORS_W83783S_FAN1_DIV fan_div:1
|
||||
fan2_div SENSORS_W83783S_FAN2_DIV fan_div:2
|
||||
fan3_div SENSORS_W83783S_FAN3_DIV fan_div:3
|
||||
alarms SENSORS_W83783S_ALARMS alarms:1
|
||||
beep_enable SENSORS_W83783S_BEEP_ENABLE beep:1
|
||||
beeps SENSORS_W83783S_BEEPS beep:2
|
||||
sensor1 SENSORS_W83783S_SENS1 sensor1:1
|
||||
sensor2 SENSORS_W83783S_SENS2 sensor2:1
|
||||
|
||||
|
||||
|
||||
Old documentation
|
||||
-----------------
|
||||
|
||||
|
||||
Winbond 83781D driver
|
||||
---------------------
|
||||
Supports the following Winbond chips:
|
||||
|
||||
Reference in new issue
Block a user