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hwmon: (pmbus/zl6100) Add support for VMON/VDRV

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Some of the ZL6100 compatible chips support monitoring a separate voltage pin,
VMON (ZL2004) or VDRV (ZL91xx). Report it as in2 / vmon.

The chips support implicit warning limits for VMON/VDRV, as percentage of the
respective critical voltage. Support by reading/writing the critical voltages
and calculating the associated warning voltages.

Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Guenter Roeck 2012-03-07 03:54:50 -08:00
commit 1640eaecc4
2 changed files with 188 additions and 14 deletions
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26
Documentation/hwmon/zl6100
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@ -121,12 +121,26 @@ in1_max_alarm Input voltage high alarm.
in1_lcrit_alarm Input voltage critical low alarm.
in1_crit_alarm Input voltage critical high alarm.
in2_label "vout1"
in2_input Measured output voltage.
in2_lcrit Critical minimum output Voltage.
in2_crit Critical maximum output voltage.
in2_lcrit_alarm Critical output voltage critical low alarm.
in2_crit_alarm Critical output voltage critical high alarm.
in2_label "vmon"
in2_input Measured voltage on VMON (ZL2004) or VDRV (ZL9101M,
ZL9117M) pin. Reported voltage is 16x the voltage on the
pin (adjusted internally by the chip).
in2_lcrit Critical minumum VMON/VDRV Voltage.
in2_crit Critical maximum VMON/VDRV voltage.
in2_lcrit_alarm VMON/VDRV voltage critical low alarm.
in2_crit_alarm VMON/VDRV voltage critical high alarm.
vmon attributes are supported on ZL2004, ZL9101M,
and ZL9117M only.
inX_label "vout1"
inX_input Measured output voltage.
inX_lcrit Critical minimum output Voltage.
inX_crit Critical maximum output voltage.
inX_lcrit_alarm Critical output voltage critical low alarm.
inX_crit_alarm Critical output voltage critical high alarm.
X is 3 for ZL2004, ZL9101M, and ZL9117M, 2 otherwise.
curr1_label "iout1"
curr1_input Measured output current.