RE: [PATCHv2 0/4] LS1021A: Add dcfb framebuffer driver support.

From: Li.Xiubo@xxxxxxxxxxxxx
Date: Thu Dec 04 2014 - 05:19:12 EST


Hi Tomi,

Thanks very much for your help.

I will have a try these days.

BRs
Xiubo


> -----Original Message-----
> From: Tomi Valkeinen [mailto:tomi.valkeinen@xxxxxx]
> Sent: Thursday, December 04, 2014 6:00 PM
> To: Xiubo Li-B47053
> Cc: Arnd Bergmann; plagnioj@xxxxxxxxxxxx; linux-fbdev@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; shawn.guo@xxxxxxxxxx; alexander.stein@systec-
> electronic.com
> Subject: Re: [PATCHv2 0/4] LS1021A: Add dcfb framebuffer driver support.
>
> On 04/12/14 11:54, Li.Xiubo@xxxxxxxxxxxxx wrote:
> > Hi Tomi,
> >
> > Thanks for your information very much.
> >
> >>> Sorry for confusing, it was delayed for other reasons internal.
> >>>
> >>> I am not familiar about the DRM, and I'd like to know if the DRM driver
> will
> >> be
> >>> support, should I also develop the libdrm too ? Or just coding in kernel
> >> level ?
> >>
> >> For simple drm drivers (this looks like it would be a simple one), I
> >> don't think there's any need for libdrm support. The generic DRM
> >> interfaces should be enough, so just kernel level coding needed.
> >>
> >
> > That's to say, if I am using the X11 server without any code in usrspace,
> > If the DRM driver will support /dev/fbX, it could work correctly ?
>
> Yes. DRM offers helper code to add /dev/fbX with not too many lines. You
> can look at the docs and drm_fb_helper.c.
>
> And X11 should work fine on top of that, using the X11 fbdev support.
>
> Tomi
>

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