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

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Message-ID: <BY2PR0301MB0613088FB4D7A4796AEAF2219B780@BY2PR0301MB0613.namprd03.prod.outlook.com>
Date:	Thu, 4 Dec 2014 10:03:43 +0000
From:	"Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>
CC:	Arnd Bergmann <arnd@...db.de>,
	"plagnioj@...osoft.com" <plagnioj@...osoft.com>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	"alexander.stein@...tec-electronic.com" 
	<alexander.stein@...tec-electronic.com>
Subject: RE: [PATCHv2 0/4] LS1021A: Add dcfb framebuffer driver support.

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@...com]
> Sent: Thursday, December 04, 2014 6:00 PM
> To: Xiubo Li-B47053
> Cc: Arnd Bergmann; plagnioj@...osoft.com; linux-fbdev@...r.kernel.org; linux-
> kernel@...r.kernel.org; shawn.guo@...aro.org; alexander.stein@...tec-
> electronic.com
> Subject: Re: [PATCHv2 0/4] LS1021A: Add dcfb framebuffer driver support.
> 
> On 04/12/14 11:54, Li.Xiubo@...escale.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
> 

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