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ibmaem: new driver for power/energy/temp meters in IBM System X hardware

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This driver reads IBM Active Energy Manager energy/temperature/power
sensors on IBM System X hardware.

[akpm@linux-foundation.org: fix printk warnings]
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Darrick J. Wong 2008-05-23 13:04:25 -07:00 committed by Linus Torvalds
parent b8fdaf5a05
commit 8808a793f0
4 changed files with 1163 additions and 0 deletions
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37
Documentation/hwmon/ibmaem Normal file
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Kernel driver ibmaem
======================
Supported systems:
* Any recent IBM System X server with Active Energy Manager support.
This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface
driver ("ipmi-si") needs to be loaded for this driver to do anything.
Prefix: 'ibmaem'
Datasheet: Not available
Author: Darrick J. Wong
Description
-----------
This driver implements sensor reading support for the energy and power
meters available on various IBM System X hardware through the BMC. All
sensor banks will be exported as platform devices; this driver can talk
to both v1 and v2 interfaces. This driver is completely separate from the
older ibmpex driver.
The v1 AEM interface has a simple set of features to monitor energy use.
There is a register that displays an estimate of raw energy consumption
since the last BMC reset, and a power sensor that returns average power
use over a configurable interval.
The v2 AEM interface is a bit more sophisticated, being able to present
a wider range of energy and power use registers, the power cap as
set by the AEM software, and temperature sensors.
Special Features
----------------
The "power_cap" value displays the current system power cap, as set by
the Active Energy Manager software. Setting the power cap from the host
is not currently supported.

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drivers/hwmon/Kconfig
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@ -330,6 +330,20 @@ config SENSORS_CORETEMP
sensor inside your CPU. Supported all are all known variants sensor inside your CPU. Supported all are all known variants
of Intel Core family. of Intel Core family.
config SENSORS_IBMAEM
tristate "IBM Active Energy Manager temperature/power sensors and control"
select IPMI_SI
depends on IPMI_HANDLER
help
If you say yes here you get support for the temperature and
power sensors and capping hardware in various IBM System X
servers that support Active Energy Manager. This includes
the x3350, x3550, x3650, x3655, x3755, x3850 M2, x3950 M2,
and certain HS2x/LS2x/QS2x blades.
This driver can also be built as a module. If so, the module
will be called ibmaem.
config SENSORS_IBMPEX config SENSORS_IBMPEX
tristate "IBM PowerExecutive temperature/power sensors" tristate "IBM PowerExecutive temperature/power sensors"
select IPMI_SI select IPMI_SI

1
drivers/hwmon/Makefile
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@ -41,6 +41,7 @@ obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o
obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o
obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o
obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o
obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o
obj-$(CONFIG_SENSORS_IT87) += it87.o obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o

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drivers/hwmon/ibmaem.c Normal file
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