hwmon: (pmbus/bpa-rs600) Handle Vin readings >= 256V

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The BPA-RS600 doesn't follow the PMBus spec for linear data.
Specifically it treats the mantissa as an unsigned 11-bit value instead
of a two's complement 11-bit value. At this point it's unclear whether
this only affects Vin or if Pin/Pout1 are affected as well. Erring on
the side of caution only Vin is dealt with here.

Fixes: 15b2703e5e ("hwmon: (pmbus) Add driver for BluTek BPA-RS600")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20210616034218.25821-1-chris.packham@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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Chris Packham 2021-06-16 15:42:18 +12:00 • committed by Guenter Roeck

parent 009c9aa5be

commit 6e9ef8ca68

1 changed files with 29 additions and 0 deletions

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drivers/hwmon/pmbus/bpa-rs600.c

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