Messages in this thread | | | From | Punit Agrawal <> | Subject | Re: [PATCH 0/5] hwmon: New hwmon registration API | Date | Fri, 08 Jul 2016 10:31:09 +0100 |
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Hi Guenter,
Guenter Roeck <linux@roeck-us.net> writes:
> Up to now, each hwmon driver has to implement its own sysfs attributes. > This requires a lot of template code, and distracts from the driver's > core function to read and write chip registers. > > To be able to reduce driver complexity, move sensor attribute handling > and thermal zone registration into the hwmon core. By using the new API, > driver size is typically reduced by 20-50% depending on driver complexity > and the number of sysfs attributes supported. > > The first patch of the series introduces the API as well as support > for temperature sensors. Subsequent patches introduce support for > voltage, current, power, energy, humidity, and fan speed sensors. > > The series was tested by converting several drivers (lm75, lm90, tmp102, > tmp421, ltc4245) to the new API. Testing was done with with real chips > as well as with the hwmon driver module test code available at > https://github.com/groeck/module-tests.
I like this series - it takes all of the attributes' handling out of the individual driver code and moving it to hwmon core.
Having attempted a port of scpi-hwmon.c, I think that driver will not gain a big savings in line count. Though it'll help separate access to sensors from sysfs related code - which I think is worth the change.
FWIW,
Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Thanks, Punit
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