linux-kernel - Re: [PATCH] drm/ssd130x: Drop _helper prefix from struct drm_*_helper

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Date:   Mon, 18 Sep 2023 09:19:07 +0200
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>,
        linux-kernel@...r.kernel.org
Cc:     dri-devel@...ts.freedesktop.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Maxime Ripard <mripard@...nel.org>
Subject: Re: [PATCH] drm/ssd130x: Drop _helper prefix from struct
 drm_*_helper_funcs callbacks

Thomas Zimmermann <tzimmermann@...e.de> writes:

> Hi
>
> Am 14.09.23 um 21:51 schrieb Javier Martinez Canillas:
>> The driver uses a naming convention where functions for struct drm_*_funcs
>> callbacks are named ssd130x_$object_$operation, while the callbacks for
>> struct drm_*_helper_funcs are named ssd130x_$object_helper_$operation.
>> 
>> The idea is that this helper_ prefix in the function names denote that are
>> for struct drm_*_helper_funcs callbacks. This convention was copied from
>> other drivers, when ssd130x was written but Maxime pointed out that is the
>> exception rather than the norm.
>
> I guess you found this in my code. I want to point out that I use the 
> _helper infix to signal that these are callback for 
> drm_primary_plane_helper_funcs and *not* drm_primary_plane_funcs. The 
> naming is intentional.
>

Yes, that's what tried to say in the commit message and indeed I got the
convention from drivers in drivers/gpu/drm/tiny. In fact I believe these
function names are since first iteration of the driver, when was meant to
be a tiny driver.

According to Maxime it's the exception rather than the rule and suggested
to change it, I don't really have a strong opinion on either naming TBH.

> Best regards
> Thomas
>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat