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hwmon: (lm93) Documentation fixes
* Drop documentation of generic module parameters. * Drop redundant section "Driver Description". * Drop sample configuration section, it belongs to sensors.conf.eg. * Random spelling and punctuation fixes. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans J. Koch <hjk@linutronix.de> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
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Jean Delvare
Mark M. Hoffman
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commit
471c606827
@ -7,7 +7,7 @@ Supported chips:
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Addresses scanned: I2C 0x2c-0x2e
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Datasheet: http://www.national.com/ds.cgi/LM/LM93.pdf
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Author:
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Authors:
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Mark M. Hoffman <mhoffman@lightlink.com>
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Ported to 2.6 by Eric J. Bowersox <ericb@aspsys.com>
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Adapted to 2.6.20 by Carsten Emde <ce@osadl.org>
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@ -16,7 +16,6 @@ Author:
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Module Parameters
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-----------------
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(specific to LM93)
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* init: integer
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Set to non-zero to force some initializations (default is 0).
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* disable_block: integer
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@ -37,30 +36,13 @@ Module Parameters
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I.e. this parameter controls the VID pin input thresholds; if your VID
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inputs are not working, try changing this. The default value is "0".
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(common among sensor drivers)
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* force: short array (min = 1, max = 48)
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List of adapter,address pairs to assume to be present. Autodetection
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of the target device will still be attempted. Use one of the more
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specific force directives below if this doesn't detect the device.
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* force_lm93: 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 'lm93' 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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Hardware Description
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--------------------
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(from the datasheet)
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The LM93, hardware monitor, has a two wire digital interface compatible with
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The LM93 hardware monitor has a two wire digital interface compatible with
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SMBus 2.0. Using an 8-bit ADC, the LM93 measures the temperature of two remote
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diode connected transistors as well as its own die and 16 power supply
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voltages. To set fan speed, the LM93 has two PWM outputs that are each
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@ -69,18 +51,12 @@ table based. The LM93 includes a digital filter that can be invoked to smooth
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temperature readings for better control of fan speed. The LM93 has four
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tachometer inputs to measure fan speed. Limit and status registers for all
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measured values are included. The LM93 builds upon the functionality of
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previous motherboard management ASICs and uses some of the LM85 s features
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previous motherboard management ASICs and uses some of the LM85's features
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(i.e. smart tachometer mode). It also adds measurement and control support
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for dynamic Vccp monitoring and PROCHOT. It is designed to monitor a dual
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processor Xeon class motherboard with a minimum of external components.
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Driver Description
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------------------
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This driver implements support for the National Semiconductor LM93.
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User Interface
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--------------
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@ -101,7 +77,7 @@ These intervals can be found in the sysfs files prochot1_interval and
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prochot2_interval. The values in these files specify the intervals for
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#P1_PROCHOT and #P2_PROCHOT, respectively. Selecting a value not in this
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list will cause the driver to use the next largest interval. The available
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intervals are:
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intervals are (in seconds):
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#PROCHOT intervals: 0.73, 1.46, 2.9, 5.8, 11.7, 23.3, 46.6, 93.2, 186, 372
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@ -111,12 +87,12 @@ assert #P2_PROCHOT, and vice-versa. This mode is enabled by writing a
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non-zero integer to the sysfs file prochot_short.
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The LM93 can also override the #PROCHOT pins by driving a PWM signal onto
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one or both of them. When overridden, the signal has a period of 3.56 mS,
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one or both of them. When overridden, the signal has a period of 3.56 ms,
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a minimum pulse width of 5 clocks (at 22.5kHz => 6.25% duty cycle), and
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a maximum pulse width of 80 clocks (at 22.5kHz => 99.88% duty cycle).
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The sysfs files prochot1_override and prochot2_override contain boolean
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intgers which enable or disable the override function for #P1_PROCHOT and
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integers which enable or disable the override function for #P1_PROCHOT and
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#P2_PROCHOT, respectively. The sysfs file prochot_override_duty_cycle
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contains a value controlling the duty cycle for the PWM signal used when
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the override function is enabled. This value ranges from 0 to 15, with 0
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@ -166,7 +142,7 @@ frequency values are constrained by the hardware. Selecting a value which is
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not available will cause the driver to use the next largest value. Also note
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that this parameter has implications for the Smart Tach Mode (see above).
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PWM Output Frequencies: 12, 36, 48, 60, 72, 84, 96, 22500 (h/w default)
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PWM Output Frequencies (in Hz): 12, 36, 48, 60, 72, 84, 96, 22500 (default)
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Automatic PWM:
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@ -178,7 +154,7 @@ individual control sources to which the PWM output is bound.
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The eight control sources are: temp1-temp4 (aka "zones" in the datasheet),
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#PROCHOT 1 & 2, and #VRDHOT 1 & 2. The bindings are expressed as a bitmask
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in the sysfs files pwm<n>_auto_channels, where a "1" enables the binding, and
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a "0" disables it. The h/w default is 0x0f (all temperatures bound).
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a "0" disables it. The h/w default is 0x0f (all temperatures bound).
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0x01 - Temp 1
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0x02 - Temp 2
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@ -324,89 +300,3 @@ LM93 Unique sysfs Files
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gpio input state of 8 GPIO pins; read-only
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Sample Configuration File
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-------------------------
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Here is a sample LM93 chip config for sensors.conf:
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---------- cut here ----------
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chip "lm93-*"
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# VOLTAGE INPUTS
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# labels and scaling based on datasheet recommendations
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label in1 "+12V1"
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compute in1 @ * 12.945, @ / 12.945
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set in1_min 12 * 0.90
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set in1_max 12 * 1.10
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label in2 "+12V2"
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compute in2 @ * 12.945, @ / 12.945
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set in2_min 12 * 0.90
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set in2_max 12 * 1.10
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label in3 "+12V3"
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compute in3 @ * 12.945, @ / 12.945
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set in3_min 12 * 0.90
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set in3_max 12 * 1.10
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label in4 "FSB_Vtt"
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label in5 "3GIO"
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label in6 "ICH_Core"
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label in7 "Vccp1"
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label in8 "Vccp2"
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label in9 "+3.3V"
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set in9_min 3.3 * 0.90
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set in9_max 3.3 * 1.10
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label in10 "+5V"
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set in10_min 5.0 * 0.90
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set in10_max 5.0 * 1.10
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label in11 "SCSI_Core"
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label in12 "Mem_Core"
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label in13 "Mem_Vtt"
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label in14 "Gbit_Core"
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# Assuming R1/R2 = 4.1143, and 3.3V reference
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# -12V = (4.1143 + 1) * (@ - 3.3) + 3.3
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label in15 "-12V"
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compute in15 @ * 5.1143 - 13.57719, (@ + 13.57719) / 5.1143
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set in15_min -12 * 0.90
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set in15_max -12 * 1.10
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label in16 "+3.3VSB"
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set in16_min 3.3 * 0.90
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set in16_max 3.3 * 1.10
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# TEMPERATURE INPUTS
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label temp1 "CPU1"
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label temp2 "CPU2"
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label temp3 "LM93"
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# TACHOMETER INPUTS
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label fan1 "Fan1"
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set fan1_min 3000
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label fan2 "Fan2"
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set fan2_min 3000
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label fan3 "Fan3"
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set fan3_min 3000
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label fan4 "Fan4"
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set fan4_min 3000
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# PWM OUTPUTS
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label pwm1 "CPU1"
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label pwm2 "CPU2"
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