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w83792d doc from Chunhao/Winbond; SUMMARY entry by me.
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2977 7894878c-1315-0410-8ee3-d5d059ff63e0
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@@ -233,6 +233,9 @@ w83781d
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w83l785ts
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w83l785ts 1 - - - yes no
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w83792d
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w83792d 3 9 7 3 pwm yes no
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xeontemp
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xeontemp 1 - - - yes no
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@@ -0,0 +1,269 @@
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Kernel driver `w83792d.o'
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=========================
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Status: W83792D support is complete and well-tested.
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Supported chips:
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* Winbond W83792D
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Prefix 'w83792d'
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Addresses scanned: I2C 0x2c - 0x2f (inclusive)
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Datasheet: Available to LM_Sensors group, sent by Chunhao Huang
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Author: Chunhao Huang @ Winbond <huang0@winbond.com.tw>
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Module Parameters
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-----------------
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<TODO: fill in here>
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Description
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-----------
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This driver implements support for the Winbond W83792AD/D.
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Detection of the chip can sometimes be foiled because it 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 it into a more
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well-behaved state first.
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The driver implements three temperature sensors, seven FAN rotation speed
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sensors, nine voltage sensors, and the Smart Fan I(Thermal Cruise mode)
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and Smart Fan II sensors.
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Temperatures are measured in degrees Celcius. There is one main temperature
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sensor, and two other sensors. A alarm is triggered when the measured
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temperture is higher than the Overtemperature or below the Hysteresis value.
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This is NOT correct, I misunderstand the Hysteresis value when I implement
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this driver. It will be fixed later: An alarm is triggered 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 Hysteresis value.
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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, 8, 16, 32, 64 or
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128) to give the readings more range or accuracy. This driver modify the
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fan divisor automatically to get the reasonable RPM rotation range.
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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.
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All the alarm triggers is "software-level" instead of "hardware-level",
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which means the alarm is triggered when "sensors" program find the measured
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value exceed the limits, while in traditional chip drivers of lm_sensors,
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alarm is triggered by the hardware interrupt status registers.
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After a discusion with lm_sensors group, the "software-level" alarm method
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to temperature may be modified in the future, but the alarm of voltage and
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fan will not be modified, because W83792AD/D does NOT support it.
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In addition to the alarms described above, there is a CHAS alarm on the
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chips which triggers if your computer case is open.
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The chips only update values each 3 seconds; reading them more often will
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do no harm, but will return 'old' values.
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W83792D PROBLEMS
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-----------------
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Known problems:
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- This driver is only for Winbond W83792D C version device, there
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are also some motherboards with B version W83792D device. The
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calculation method to in6-in7(measured value, limits) is a little
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different between C and B version. C or B version can be identified
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by CR[0x49h].
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- The function of vid and vrm has not been finished, because I'm NOT
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very familiar with them. If someone can finish it, that's good,
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- The function of chassis open detection need further test.
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Chip Features
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-------------
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Chip `w83792d'
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LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
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in0 NONE NONE R 3
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in1 NONE NONE R 3
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in2 NONE NONE R 3
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in3 NONE NONE R 3
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in4 NONE NONE R 3
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in5 NONE NONE R 3
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in6 NONE NONE R 3
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in7 NONE NONE R 3
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in8 NONE NONE R 3
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in0_min in0 in0 RW 3
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in1_min in1 in1 RW 3
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in2_min in2 in2 RW 3
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in3_min in3 in3 RW 3
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in4_min in4 in4 RW 3
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in5_min in5 in5 RW 3
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in6_min in6 in6 RW 3
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in7_min in7 in7 RW 3
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in8_min in8 in8 RW 3
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in0_max in0 in0 RW 3
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in1_max in1 in1 RW 3
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in2_max in2 in2 RW 3
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in3_max in3 in3 RW 3
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in4_max in4 in4 RW 3
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in5_max in5 in5 RW 3
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in6_max in6 in6 RW 3
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in7_max in7 in7 RW 3
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in8_max in8 in8 RW 3
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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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fan4 NONE NONE R 0
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fan5 NONE NONE R 0
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fan6 NONE NONE R 0
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fan7 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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fan4_min fan4 NONE RW 0
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fan5_min fan5 NONE RW 0
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fan6_min fan6 NONE RW 0
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fan7_min fan7 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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fan1_div fan1 NONE RW 0
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fan2_div fan2 NONE RW 0
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fan3_div fan3 NONE RW 0
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fan4_div fan4 NONE RW 0
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fan5_div fan5 NONE RW 0
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fan6_div fan6 NONE RW 0
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fan7_div fan7 NONE RW 0
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LABEL FEATURE SYMBOL SYSCTL FILE:NR
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in0 SENSORS_W83792D_IN0 in0:3
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in1 SENSORS_W83792D_IN1 in1:3
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in2 SENSORS_W83792D_IN2 in2:3
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in3 SENSORS_W83792D_IN3 in3:3
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in4 SENSORS_W83792D_IN4 in4:3
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in5 SENSORS_W83792D_IN5 in5:3
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in6 SENSORS_W83792D_IN6 in6:3
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in7 SENSORS_W83792D_IN7 in7:3
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in8 SENSORS_W83792D_IN8 in8:3
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in0_min SENSORS_W83792D_IN0_MIN in0:1
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in1_min SENSORS_W83792D_IN1_MIN in1:1
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in2_min SENSORS_W83792D_IN2_MIN in2:1
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in3_min SENSORS_W83792D_IN3_MIN in3:1
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in4_min SENSORS_W83792D_IN4_MIN in4:1
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in5_min SENSORS_W83792D_IN5_MIN in5:1
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in6_min SENSORS_W83792D_IN6_MIN in6:1
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in7_min SENSORS_W83792D_IN7_MIN in7:1
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in8_min SENSORS_W83792D_IN8_MIN in8:1
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in0_max SENSORS_W83792D_IN0_MAX in0:2
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in1_max SENSORS_W83792D_IN1_MAX in1:2
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in2_max SENSORS_W83792D_IN2_MAX in2:2
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in3_max SENSORS_W83792D_IN3_MAX in3:2
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in4_max SENSORS_W83792D_IN4_MAX in4:2
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in5_max SENSORS_W83792D_IN5_MAX in5:2
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in6_max SENSORS_W83792D_IN6_MAX in6:2
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in7_max SENSORS_W83792D_IN7_MAX in7:2
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in8_max SENSORS_W83792D_IN8_MAX in8:2
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fan1 SENSORS_W83792D_FAN1 fan1:2
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fan2 SENSORS_W83792D_FAN2 fan2:2
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fan3 SENSORS_W83792D_FAN3 fan3:2
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fan4 SENSORS_W83792D_FAN4 fan4:2
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fan5 SENSORS_W83792D_FAN5 fan5:2
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fan6 SENSORS_W83792D_FAN6 fan6:2
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fan7 SENSORS_W83792D_FAN7 fan7:2
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fan1_min SENSORS_W83792D_FAN1_MIN fan1:1
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fan2_min SENSORS_W83792D_FAN2_MIN fan2:1
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fan3_min SENSORS_W83792D_FAN3_MIN fan3:1
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fan4_min SENSORS_W83792D_FAN4_MIN fan4:1
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fan5_min SENSORS_W83792D_FAN5_MIN fan5:1
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fan6_min SENSORS_W83792D_FAN6_MIN fan6:1
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fan7_min SENSORS_W83792D_FAN7_MIN fan7:1
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temp1 SENSORS_W83792D_TEMP1 temp1:3
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temp1_hyst SENSORS_W83792D_TEMP1_HYST temp1:2
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temp1_over SENSORS_W83792D_TEMP1_OVER temp1:1
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temp2 SENSORS_W83792D_TEMP2 temp2:3
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temp2_hyst SENSORS_W83792D_TEMP2_HYST temp2:2
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temp2_over SENSORS_W83792D_TEMP2_OVER temp2:1
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temp3 SENSORS_W83792D_TEMP3 temp3:3
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temp3_hyst SENSORS_W83792D_TEMP3_HYST temp3:2
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temp3_over SENSORS_W83792D_TEMP3_OVER temp3:1
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fan1_div SENSORS_W83792D_FAN1_DIV fan_div:1
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fan2_div SENSORS_W83792D_FAN2_DIV fan_div:2
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fan3_div SENSORS_W83792D_FAN3_DIV fan_div:3
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fan4_div SENSORS_W83792D_FAN4_DIV fan_div:4
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fan5_div SENSORS_W83792D_FAN5_DIV fan_div:5
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fan6_div SENSORS_W83792D_FAN6_DIV fan_div:6
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fan7_div SENSORS_W83792D_FAN7_DIV fan_div:7
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/PROC ENTRIES
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-------------
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Most are identical to the w83781d entries. See the w83781d documentation for
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details.
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Most of the additional entries not in the w83781d are Winbond Smart Fan I/II:
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Please read "7.7 FAN Speed Count and FAN Speed Control" of W83792AD/D datasheet
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before you read the explanation to the /proc entries below.
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fan_cfg: indicates the fan speed control mode: 0 means PWM/DC mode,
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1 means Smart Fan I(Thermal Cruise) mode, 2 or 3 means Smart Fan II
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mode. There are three items in this entry, the first one is the
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configuration of Fan1, the rest may be deduced by analogy.
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pwm_flag: valid under PWM/DC mode, 1 means PWM mode, 0 means DC mode.
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There are three items in this entry, the first one is PWM/DC mode
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of Fan1, the rest may be deduced by analogy.
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thermal_cruise: valid under Smart Fan I mode, indicates the wanted
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temperature. There are three items in this entry, the first one
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is setting temperature of Fan1, the rest may be deduced by analogy.
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fan_tolerance: valid under Smart Fan I or Smart Fan II mode, indicates
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the interval temperature. There are also three items in this entry.
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sf2_points_fan1: valid under Smart Fan II mode, there are four items in
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this entry, indicates the Temp.[1-4] in "Figure 8. Smart Fan II
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behavior" to Fan1.
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sf2_points_fan2: almost same as the above one, except that this entry
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is for Fan2.
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sf2_points_fan3: almost same as the above one, except that this entry
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is for Fan3.
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sf2_levels_fan1: valid under Smart Fan II mode, there are four items in
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this entry, indicates the "Non-Stop Duty Cycle" and "Fan Duty Cycle
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Level [1-3]" in "Figure 8. Smart Fan II behavior" to Fan1. The
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first item "Non-Stop Duty Cycle" is read only in this driver, while
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the other three items can be modified.
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sf2_levels_fan2: almost same as the above one, except that this entry
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is for Fan2.
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sf2_levels_fan3: almost same as the above one, except that this entry
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is for Fan3.
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additional entries for chassis intrusion detection:
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chassis: There are two items in this entry, the first one indicats the
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chassis status, 1 means chassis intrusion detected, while 1 means
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normal. The second item in this entry is used to clear the
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detected chassis intrusion interrupt and reset the chassis status
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to normal.
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Author/Maintainer
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-----------------
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Original 792D support: Chunhao Huang(huang0@winbond.com.tw)
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subclients register added by: Mark D. Studebaker(mdsxyz123@yahoo.com)
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and modified by Jean Delvare <khali@linux-fr.org>.
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