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This power supply device doesn't correctly manage it's own fault led.
Add an led class device and register it so that userspace can manage
power supply fault led as necessary.
Signed-off-by: Eddie James <eajames@linux.vnet.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This power supply device regularly fails to read VOUT_MODE due to the
CML bit going high. This results in an incorrect exponent used for the
voltage data, and therefore the power supply reports incorrect voltage.
Work around this by setting the pmbus flag to skip the CML check.
Signed-off-by: Eddie James <eajames@linux.vnet.ibm.com>
Fixes: f69316d62c ("hwmon: (pmbus) Add IBM Common Form Factor (CFF) ...")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add debugfs entries for additional power supply data, including part
number, serial number, FRU number, firmware revision, ccin, and the
input history of the power supply. The input history is 10 minutes of
input power data in the form of twenty 30-second packets. Each packet
contains average and maximum power for that 30 second period.
Signed-off-by: Edward A. James <eajames@us.ibm.com>
[groeck: Fixed endianness problem]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add the driver to monitor IBM CFF power supplies with hwmon over
pmbus.
Signed-off-by: Edward A. James <eajames@us.ibm.com>
[groeck: drop 'default n'; include bitops.h instead of jiffies.h]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
