linux-kernel - Re: [PATCH v4 0/2] adding support for Microchip PAC193X Power Monitor

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Date: Mon, 22 Jan 2024 19:28:44 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Guenter Roeck <linux@...ck-us.net>
Cc: marius.cristea@...rochip.com, lars@...afoo.de, robh+dt@...nel.org,
 jdelvare@...e.com, linux-hwmon@...r.kernel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/2] adding support for Microchip PAC193X Power
 Monitor

On Mon, 22 Jan 2024 06:57:32 -0800
Guenter Roeck <linux@...ck-us.net> wrote:

> On 1/22/24 00:47, marius.cristea@...rochip.com wrote:
> > From: Marius Cristea <marius.cristea@...rochip.com>
> > 
> > Adding support for Microchip PAC193X series of Power Monitor with
> > Accumulator chip family. This driver covers the following part numbers:
> >   - PAC1931, PAC1932, PAC1933 and PAC1934
> > 
> >    This device is at the boundary between IIO and HWMON (if you are
> > looking just at the "shunt resistors, vsense, power, energy"). The
> > device also has ADC internally that can measure voltages (up to 4
> > channels) and also currents (up to 4 channels). The current is measured as
> > voltage across the shunt_resistor.
> > 
> >    I have started with a simple driver (this one that is more appropriate to be
> > a HWMON) and willing to add more functionality later (like data buffering that  
> 
> Not sure I understand what you are trying to say here. This is obviously an iio
> driver, not a hwmon driver. Any hwmon related concern is irrelevant.

It's a left over comment / attempt to summarise the discussion of whether IIO
or HWMON was a better home for a driver for this device.  Based on current
feature set that's not an obvious decision, but there are other planned features
that fit better in IIO.


> 
> Guenter
>