Thanks a lot Daniel! I am curious if i can make my ATi x1600 show proper
graphics with DFB. :)
Daniel James Laird wrote:
devmem is based on you have a mmapped region that your hardware can draw from.
fbdev is built on top of the linux framebuffer and uses standard ioctls to
read/write settings in the FB driver.
A good example of a devmem based system is the davinci driver. This uses the framebuffers as well and is simple to read/understand.
I used this driver as the basis for a similar driver on the NXP PNX893X chipset.
To get it to use devmem and not fb then you must have
system=devmem
video-length and video-phys values set in your directfbrc file.
It will then mmap the memory from phys -> to phys+length and then use devmem
system to control surface allocation etc within this memory.
Hope this helps a little bit.
Daniel Laird
-----Original Message-----
From: directfb-users-boun...@directfb.org
[mailto:directfb-users-boun...@directfb.org] On Behalf Of Georgios Tsalikis
Sent: 2009 Mar 11 20:51
To: directfb-users@directfb.org
Subject: [directfb-users] In need of information about devmem
Hi!
Could someone explain to me the differences between fbdev and devmem?
Would it be possible to have a brief tutorial about how to start a DFB
app and initialize the gfx device with the devmem ?
Thanks in advance!
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