4 This driver talks to the IBM Systems Director Active Energy Manager, known
8 * Any recent IBM System X server with AEM support.
9 This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
10 x3950 M2, and certain HC10/HS2x/LS2x/QS2x blades. The IPMI host interface
11 driver ("ipmi-si") needs to be loaded for this driver to do anything.
13 Datasheet: Not available
15 Author: Darrick J. Wong
20 This driver implements sensor reading support for the energy and power meters
21 available on various IBM System X hardware through the BMC. All sensor banks
22 will be exported as platform devices; this driver can talk to both v1 and v2
23 interfaces. This driver is completely separate from the older ibmpex driver.
25 The v1 AEM interface has a simple set of features to monitor energy use. There
26 is a register that displays an estimate of raw energy consumption since the
27 last BMC reset, and a power sensor that returns average power use over a
28 configurable interval.
30 The v2 AEM interface is a bit more sophisticated, being able to present a wider
31 range of energy and power use registers, the power cap as set by the AEM
32 software, and temperature sensors.
37 The "power_cap" value displays the current system power cap, as set by the AEM
38 software. Setting the power cap from the host is not currently supported.