linux-kernel - Re: [PATCH 2/2] x86: pcengines apuv2 gpio/leds/keys platform driver

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Message-ID: <4662508c-01cc-ca84-7241-d28c2719dc63@metux.net>
Date:   Thu, 14 Feb 2019 11:57:32 +0100
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        platform-driver-x86 <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH 2/2] x86: pcengines apuv2 gpio/leds/keys platform driver

On 13.02.19 10:35, Linus Walleij wrote:

> For the dev_id you need to be aware of the following from> <linux/platform_device.h>:> #define PLATFORM_DEVID_NONE     (-1)>
#define PLATFORM_DEVID_AUTO     (-2)>> If the platform device has .id
set to -1 it will be just "leds-gpio",> if it is -2 it will be whatever,
take a chance on .0 or ideally fix> it up. Any positive number like .id
= 4 becomes "leds-gpio.4".> > So figure out the .id field on the
platform device.

Hacked up some debuging into the lookup code and found that it's
just "leds-gpio" and "gpio-keys-polled" in my case. I've just got one
instance of each right now and used PLATFORM_DEVID_NONE.

--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287