tree a02b40395a2739f6a9b2965b9a6815e07116890d
parent c9e840e443d88bdef496388ccbdbc419868ab1ba
author Brandon Wyman <bjwyman@gmail.com> 1653345220 +0000
committer Shawn McCarney <shawnmm@us.ibm.com> 1653502223 +0000

psu-ng: Disable INPUT_HISTORY for 1400W IBM PSU

If the device driver is ibm-cpffps, read the MFR_POUT_MAX value
(max_power_out). Only enable INPUT_HISTORY data collection if it is not
the 1400W IBM power supply (MSB/LSB results in 30725 for 1400). The
1400W IBM power supply appears to cause problems on the bus when
an INPUT_HISTORY PMBus command read occurs.

Tested:
   Simulated Rainier 2S4U
   Fake 2nd and 3rd PSUs to return 1400W value
   Verify 1st and 4th collecting INPUT_HISTORY
   Verify 2nd and 3rd PSUs not getting INPUT_HISTORY collected
   -----
   Verify real Rainier 2S4U with 1600W working as expected.

Change-Id: Ia37cea9b0273ac5926e4bc581a2ea8a4079afa23
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>