From: "Antonino A. Daplas" <adaplas@gmail.com>
To: linux-fbdev-devel@lists.sourceforge.net
Subject: Re: 8 words bursts for fbdev driver
Date: Mon, 28 May 2007 23:40:08 +0800 [thread overview]
Message-ID: <1180366808.4526.4.camel@daplas> (raw)
In-Reply-To: <1180365959.465af4876a6a8@imp.free.fr>
On Mon, 2007-05-28 at 17:25 +0200, xcsnake@free.fr wrote:
> Hello,
>
> I have posted this message on the linux-kernel mailing list, but I think it
> could be more appropriate here.
> I'm working on a FPGA vga controller, with an arm cpu (at91rm9200). My FPGA is
> plugged on a 16 bits data bus. I'm trying to develop the framebuffer driver,
> from the epson s1d13xxxfb driver to use my controller. I have a first driver
> which works well. To accelerate my controller, I would like to read and write in
> my video memory (controlled by the FPGA) by 8 words bursts. Is it possible to
> tell the kernel that the memory must be accessed only by 8 words bursts ??
> My driver is available on http://xcsnake.free.fr/driver
You can write your own fillrect, imageblit and copyarea routine. The
same with fb_read and fb_write. For userland that mmap's the
framebuffer, I don't think there's a way to tell them how to access the
framebuffer.
Tony
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prev parent reply other threads:[~2007-05-28 15:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-28 15:25 8 words bursts for fbdev driver xcsnake
2007-05-28 15:40 ` Antonino A. Daplas [this message]
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