linux-kernel - RE: [PATCH v1 1/9] gpio: gxp: Add HPE GXP GPIO

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Message-ID: <DM4PR84MB1927C9D3C5CC5B001713CE57886A9@DM4PR84MB1927.NAMPRD84.PROD.OUTLOOK.COM>
Date:   Thu, 27 Apr 2023 14:53:07 +0000
From:   "Hawkins, Nick" <nick.hawkins@....com>
To:     Guenter Roeck <linux@...ck-us.net>,
        "Verdun, Jean-Marie" <verdun@....com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "brgl@...ev.pl" <brgl@...ev.pl>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "jdelvare@...e.com" <jdelvare@...e.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v1 1/9] gpio: gxp: Add HPE GXP GPIO




> This is not information which should be reported through a gpio driver.
> Besides, the functions don't exist at this point in the series,
> and there should be no extern declarations in source files.

> If you want to model fan or psu information through gpio, drop
> the hwmon drivers and implement reading the status here, then use
> the existing gpio-fan hwmon driver to report it in the hwmon subsystem.

Thank you for the feedback Guenter,

I see how it is possible to use gpio-fan for the fan. As for the gxp-psu
Hwmon driver can I model the gpio-fan driver to get the necessary
gpio information for power supplies?

-Nick Hawkins