[beagleboard] Neon enhanced FB Driver[fbdev replacement for Xorg]

2013-10-05 Thread garyamort 
Ran across this article last night: 
http://www.phoronix.com/scan.php?page=news_item&px=MTI5MDI

Siarhei Siamashka  wasn't happy with the open 
source framebuffer driver for his Raspberry Pi that utilizes the built in 
Mali GPU.

It seems the main problem was that the driver was just a basic  driver with 
some function call replacements to use the Mali GPU's special functions.

This means that it didn't include any of the other accelerated function 
calls that come with the Arm platform[NEON and VFRP]

So he rewrote the fbdev driver using their code, and went ahead and added 
the calls for neon and vfrp.   He also has done it in a very smart manner, 
his driver is a drop in replacement for xf86-video-fbdev.  

It's default mode of operation is exactly the same as fbdev - so it will 
work on any platform including both desktops[intel or amd processors] and 
embedded platforms.

During initialization, it will check to see if the Neon features are 
available, if so it will configure itself to use them.  It checks for VFRP 
and enables those functions.  Finally it checks for the Mali GPU and if it 
is there it enables use of those functions.

He's very appropriately named his driver 'fbturbo' amd posted it up to 
Github.  https://github.com/ssvb/xf86-video-fbturbo

This means it should work on the BBB as well and give you a performance 
boost if running a desktop environment.

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Re: [beagleboard] Neon enhanced FB Driver[fbdev replacement for Xorg]

2013-10-05 Thread David Goodenough 
On Saturday 05 Oct 2013, garyamort wrote:
> Ran across this article last night:
> http://www.phoronix.com/scan.php?page=news_item&px=MTI5MDI
I think you have misread this article.
> 
> Siarhei Siamashka  wasn't happy with the open
> source framebuffer driver for his Raspberry Pi that utilizes the built in
> Mali GPU.
The article talks about A10/20 chips, not the Raspberry Pi.
> 
> It seems the main problem was that the driver was just a basic  driver with
> some function call replacements to use the Mali GPU's special functions.
The Pi does not use a Mali GPU, neither do the Beagles.
> 
> This means that it didn't include any of the other accelerated function
> calls that come with the Arm platform[NEON and VFRP]
Yes, this bit is relevant.
> 
> So he rewrote the fbdev driver using their code, and went ahead and added
> the calls for neon and vfrp.   He also has done it in a very smart manner,
> his driver is a drop in replacement for xf86-video-fbdev.
> 
> It's default mode of operation is exactly the same as fbdev - so it will
> work on any platform including both desktops[intel or amd processors] and
> embedded platforms.
> 
> During initialization, it will check to see if the Neon features are
> available, if so it will configure itself to use them.  It checks for VFRP
> and enables those functions.  Finally it checks for the Mali GPU and if it
> is there it enables use of those functions.
> 
> He's very appropriately named his driver 'fbturbo' amd posted it up to
> Github.  https://github.com/ssvb/xf86-video-fbturbo
> 
> This means it should work on the BBB as well and give you a performance
> boost if running a desktop environment.
Less that it will for chips like the A10/20, but might be worth a try.

David

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Re: [beagleboard] Neon enhanced FB Driver[fbdev replacement for Xorg]

2013-10-05 Thread Maxim Podbereznyy 
Any numbers to compare?
05.10.2013 22:07 пользователь "David Goodenough" <
david.goodeno...@linkchoose.co.uk> написал:

> On Saturday 05 Oct 2013, garyamort wrote:
> > Ran across this article last night:
> > http://www.phoronix.com/scan.php?page=news_item&px=MTI5MDI
> I think you have misread this article.
> >
> > Siarhei Siamashka  wasn't happy with the open
> > source framebuffer driver for his Raspberry Pi that utilizes the built in
> > Mali GPU.
> The article talks about A10/20 chips, not the Raspberry Pi.
> >
> > It seems the main problem was that the driver was just a basic  driver
> with
> > some function call replacements to use the Mali GPU's special functions.
> The Pi does not use a Mali GPU, neither do the Beagles.
> >
> > This means that it didn't include any of the other accelerated function
> > calls that come with the Arm platform[NEON and VFRP]
> Yes, this bit is relevant.
> >
> > So he rewrote the fbdev driver using their code, and went ahead and added
> > the calls for neon and vfrp.   He also has done it in a very smart
> manner,
> > his driver is a drop in replacement for xf86-video-fbdev.
> >
> > It's default mode of operation is exactly the same as fbdev - so it will
> > work on any platform including both desktops[intel or amd processors] and
> > embedded platforms.
> >
> > During initialization, it will check to see if the Neon features are
> > available, if so it will configure itself to use them.  It checks for
> VFRP
> > and enables those functions.  Finally it checks for the Mali GPU and if
> it
> > is there it enables use of those functions.
> >
> > He's very appropriately named his driver 'fbturbo' amd posted it up to
> > Github.  https://github.com/ssvb/xf86-video-fbturbo
> >
> > This means it should work on the BBB as well and give you a performance
> > boost if running a desktop environment.
> Less that it will for chips like the A10/20, but might be worth a try.
>
> David
>
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> For more options, visit http://beagleboard.org/discuss
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