linux-kernel - Re: [PATCH 3/3] hwmon: (ina2xx) Add support for ina260

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Message-ID: <a78bbb40-9a0c-8acc-841e-7a51447d4dbc@roeck-us.net>
Date:   Tue, 25 Feb 2020 18:16:19 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Franz Forstmayr <forstmayr.franz@...il.com>
Cc:     Jean Delvare <jdelvare@...e.com>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Jonathan Corbet <corbet@....net>, linux-hwmon@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH 3/3] hwmon: (ina2xx) Add support for ina260

On 2/24/20 3:26 PM, Franz Forstmayr wrote:
> Add initial support for INA260 power monitor with integrated shunt.
> Registers are different from other INA2xx devices, that's why a small
> translation table is used.
> 
> Signed-off-by: Franz Forstmayr <forstmayr.franz@...il.com>

I think the chip is sufficiently different to other chips that a separate
driver would make much more sense than adding support to the existing driver.
There is no calibration, registers are different, the retry logic is
not needed. A new driver could use the with_info API and would be much
simpler while at the same time not messing up the existing driver.

Guenter