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Decent documentation for the adm1025 driver.
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1914 7894878c-1315-0410-8ee3-d5d059ff63e0
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Kernel driver `adm1021.o'
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Kernel driver `adm1025.o'
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=========================
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Status: Complete; Alpha.
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Status: Complete, known to work but not heavily tested
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Supported chips:
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* Analog Devices ADM1025
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Prefix `adm1025'
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Addresses scanned: I2C 0x2c - 0x2e (inclusive)
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Datasheet: Publicly available at the Analog Devices website
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* Philips NE1619
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Prefix `adm1025'
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Addresses scanned: I2C 0x2c - 0x2e (inclusive)
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Datasheet: Publicly available at the Philips website
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Author: Chen-Yuan Wu <gwu@esoft.com>
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The NE1619 presents some differences with the original ADM1025:
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* Only two possible addresses (0x2c - 0x2d), although we don't care.
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* No temperature offset register, but we don't use it anyway.
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* No INT mode for pin 16. We don't play with it anyway.
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No separate prefix was added for the NE1619, it just wasn't worth it.
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Author: Chen-Yuan Wu <gwu@esoft.com> and Jean Delvare <khali@linux-fr.org>
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License: GPL
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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_adm1025: 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 `adm1025' 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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(This is from Analog Devices.) The ADM1025 is a complete system hardware
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monitor for microprocessor-based systems, providing measurement and limit
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comparison of various system parameters. Five voltage measurement inputs
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are provided, for monitoring +2.5V, +3.3V, +5V and +12V power supplies and
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the processor core voltage. The ADM1025 can monitor a sixth power-supply
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voltage by measuring its own VCC. One input (two pins) is dedicated to a
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remote temperature-sensing diode and an on-chip temperature sensor allows
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ambient temperature to be monitored.
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One specificity of this chip is that the pin 11 can be hardwired in two
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different manners. It can act as the +12V power-supply voltage analog
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input, or as the a fifth digital entry for the VID reading (bit 4). It's
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kind of strange since both are useful, and the reason for designing the
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chip that way is obscure at least to me. The bit 5 of the configuration
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register can be used to define how the chip is hardwired. Please note
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that it is not a choice you have to make as the user. The choice was
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already made by your motherboard's maker. If the configuration bit isn't
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set properly, you'll have a wrong +12V reading or a wrong VID reading.
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The way the driver handles that is to preserve this bit through the
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initialization process, assuming that the BIOS set it up properly
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beforehand. If it turns out not to be true in some cases, we'll provide
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a module parameter to force modes.
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Chip Features
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-------------
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Chip 'adm1025'
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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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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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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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temp1 - - R- 1
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temp1_low temp1 temp1 RW 1
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temp1_high temp1 temp1 RW 1
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temp2 - - R- 1
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temp2_low temp2 temp2 RW 1
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temp2_high temp2 temp2 RW 1
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vid - - R- 3
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vrm - - RW 1
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alarms - - R- 0
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LABEL FEATURE SYMBOL SYSCTL FILE:N
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in0 SENSORS_ADM1025_IN0 in0:3
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in1 SENSORS_ADM1025_IN1 in1:3
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in2 SENSORS_ADM1025_IN2 in2:3
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in3 SENSORS_ADM1025_IN3 in3:3
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in4 SENSORS_ADM1025_IN4 in4:3
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in5 SENSORS_ADM1025_IN5 in5:3
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in0_min SENSORS_ADM1025_IN0_MIN in0:1
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in1_min SENSORS_ADM1025_IN1_MIN in1:1
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in2_min SENSORS_ADM1025_IN2_MIN in2:1
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in3_min SENSORS_ADM1025_IN3_MIN in3:1
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in4_min SENSORS_ADM1025_IN4_MIN in4:1
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in5_min SENSORS_ADM1025_IN5_MIN in5:1
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in0_max SENSORS_ADM1025_IN0_MAX in0:2
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in1_max SENSORS_ADM1025_IN1_MAX in1:2
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in2_max SENSORS_ADM1025_IN2_MAX in2:2
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in3_max SENSORS_ADM1025_IN3_MAX in3:2
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in4_max SENSORS_ADM1025_IN4_MAX in4:2
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in5_max SENSORS_ADM1025_IN5_MAX in5:2
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temp1 SENSORS_ADM1025_TEMP1 temp1:3
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temp1_low SENSORS_ADM1025_TEMP1_LOW temp1:2
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temp1_high SENSORS_ADM1025_TEMP1_HIGH temp1:1
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temp2 SENSORS_ADM1025_TEMP2 temp2:3
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temp2_low SENSORS_ADM1025_TEMP2_LOW temp2:2
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temp2_high SENSORS_ADM1025_TEMP2_HIGH temp2:1
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vid SENSORS_ADM1025_VID vid:1
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vrm SENSORS_ADM1025_VRM vrm:1
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alarms SENSORS_ADM1025_ALARMS alarms:1
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