linux-kernel - Re: vfb module

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Message-ID: <20070405223802.xdw94s8lxcgcsw0w@feanor.sssup.it>
Date:	Thu, 05 Apr 2007 22:38:02 +0200
From:	trimarchi@...dalf.sssup.it
To:	"Antonino A. Daplas" <adaplas@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: vfb module

Hi,
>> I changed a little bit the vfb module to be used as a frame buffer in
>> memory. I would like to use the mmap over the virtual framebuffer. I
>> added a few line:
>> I allocated the buffer using
>> videomemory=(void *)__get_free_pages(GFP_KERNEL,
>> get_order(PAGE_ALIGN(videomemorysize)));
>>
>> and fixed the framebuffer info structure:
>>
>> vfb_fix.smem_start = virt_to_phys(videomemory);
>> vfb_fix.smem_len = videomemorysize;
>>
>> What is the virtual frame buffer meant for?
>
> For testing, and some uses it as a skeleton for another driver.

I want to use for debugging purpose in embedded system in emulation  
enviroment.
Regards Michael


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