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Date: Fri, 08 Jul 2016 10:31:09 +0100 From: Punit Agrawal <punit.agrawal@....com> To: Guenter Roeck <linux@...ck-us.net> Cc: Jean Delvare <jdelvare@...e.com>, Jonathan Cameron <jic23@...nel.org>, Zhang Rui <rui.zhang@...el.com>, Eduardo Valentin <edubezval@...il.com>, linux-pm@...r.kernel.org, linux-iio@...r.kernel.org, linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/5] hwmon: New hwmon registration API Hi Guenter, Guenter Roeck <linux@...ck-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@....com> Thanks, Punit > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
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