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

- From: \<hidden\>
- Date: 2014-12-04 10:19:07 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2014/12/4388769
- Thread: https://ratatoskr.run/linux-fbdev/2014/12/4387652/t.md

```text
Hi Tomi,

Thanks very much for your help.

I will have a try these days.

BRs
Xiubo


> -----Original Message-----
> From: Tomi Valkeinen [mailto:<redacted>]
> Sent: Thursday, December 04, 2014 6:00 PM
> To: Xiubo Li-B47053
> Cc: Arnd Bergmann; <redacted>; <redacted>; linux-
> kernel@vger.kernel.org; shawn.guo@linaro.org; alexander.stein@systec-
> electronic.com
> Subject: Re: [PATCHv2 0/4] LS1021A: Add dcfb framebuffer driver support.
> 
> On 04/12/14 11:54, Li.Xiubo@freescale.com 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
> 

```