linux-kernel - Aw: Re: [PATCH] drm/mediatek: Add MTK Framebuffer-Device (mt7623)

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Message-ID: <trinity-0da588a3-1277-4421-ad6b-1f6aeb129dd6-1547146897687@3c-app-gmx-bs35>
Date:   Thu, 10 Jan 2019 20:01:37 +0100
From:   "Frank Wunderlich" <frank-w@...lic-files.de>
To:     "Daniel Vetter" <daniel@...ll.ch>
Cc:     "CK Hu" <ck.hu@...iatek.com>,
        "Philipp Zabel" <p.zabel@...gutronix.de>,
        "David Airlie" <airlied@...ux.ie>,
        "Matthias Brugger" <matthias.bgg@...il.com>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "Linux ARM" <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        "Alexander Ryabchenko" <d3adme4t@...il.com>
Subject: Aw: Re: [PATCH] drm/mediatek: Add MTK Framebuffer-Device (mt7623)

Hi Daniel,

> > Would be good to use the new generic fbdev emulation code here, for even
> > less code. Or at least know why this isn't possible to use for mtk (and
> > maybe address that in the core code). Hand-rolling fbdev code shouldn't be
> > needed anymore.
> 
> Back on the mailing list, no private replies please:

i don't wanted to spam all people with dumb questions ;)

> For examples please grep for drm_fbdev_generic_setup(). There's also a
> still in-flight series from Gerd Hoffmann to convert over bochs. That,
> plus all the kerneldoc linked from there should get you started.
> -Daniel

this is one of google best founds if i search for drm_fbdev_generic_setup:

https://lkml.org/lkml/2018/12/19/305

not very helpful...

so i tried kernel-doc

https://www.kernel.org/doc/html/latest/gpu/drm-kms-helpers.html?highlight=drm_fbdev_generic_setup#c.drm_fbdev_generic_setup

which is nice function-reference but i've found no generic workflow

as the posted driver is "only" a driver ported from kernel 4.4 by Alexander, i don't know if this new framework can be used and which parts need to be changed. I only try to bring his code Mainline....
Maybe CK Hu can help here because driver is originally from him and he knows internals. Or maybe you can help here?

i personally make my first steps as spare-time kernel-developer :)

regards Frank