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| /linux/drivers/hwmon/pmbus/ |
| H A D | fsp-3y.c | diff 2d101db3e5be3bbee6001d4227705cec70ecb82e Thu Apr 29 09:53:38 CEST 2021 Václav Kubernát <kubernat@cesnet.cz> hwmon: (pmbus/fsp-3y) Fix FSP-3Y YH-5151E non-compliant vout encoding
I didn't properly test the driver for YH-5151E, so it was completely
broken. Firstly, the log/real mapping was incorrect in one case.
Secondly, PMBus specifies that output voltages should be in the linear16
encoding. However, the YH-5151E is non-compliant and uses linear11.
YM-2151E isn't affected by this. Fix this by converting the values
inside the read functions. linear16 gets the exponent from the VOUT_MODE
command. The device doesn't support it, so I have to manually supply the
value for it.
Both supported devices have now been tested to report correct vout
values.
Fixes: 1734b4135a62 ("hwmon: Add driver for fsp-3y PSUs and PDUs")
Signed-off-by: Václav Kubernát <kubernat@cesnet.cz>
Link: https://lore.kernel.org/r/20210429075337.110502-1-kubernat@cesnet.cz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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