Re: About sh7203 framebuffer driver.

[Fabio G. <fab...@au...>]

I have to develop some SDL based widget; so It could be usefull for me to s=
ee=20
how they appear in portrait and landscape orientation;
Thia is why I'd like to use hw to rotate; the widget har fixed size and and=
=20
none adatptive strategy is planned to be implemented.
Our application is performaces oriented and this is way I'd like to operate=
 on=20
HW directly. But for doing this I need to know what is the best way to=20
communicate between user space and kerel space.

Regards

P.S.

Do you have an idea of when the toolchain upgrade will be ready on website?


Alle 12:22, luned=EC 28 gennaio 2008, Kieran Bingham ha scritto:
> Hi Fabio,
>
> I believe the rotate function on the LCDC changed the way it read the
> pixels from memory.
>
> I think it turned the display from a 320x240 to a 240x320 display.
> Useful for setting up the LCD panel in a different orientation etc..
>
> I don't think the hardware can be used to perform rotation of an
> image. that poses questions like
>  - how would it stretch the image.
> or
>  - would it crop the image?
>
> You can play with changing this register setting on the fly while the
> board is running using HEW and choosing View --> CPU --> IO from the
> menu's.
>
> This gives you a view of all the on chip peripherals and access to
> their registers.
>
> Cheers
> --
> Kieran
>
> On 28/01/2008, Fabio Giovagnini <fab...@au...> wrote:
> > Hi All,
> > I read the source code of sh7203 framebuffer driver made I suppose by M=
CP
> > Data.
> > I had a question: Is it possible to tell the driver to rotate the image
> > usign the LCDC native register instructions?
> > If yes how? Do I need to implemnet an iocontrol funcrion or what is the
> > way?
> >
> >
> > --
> > Fabio Giovagnini
> >
> > Aurion s.r.l.
> > via degli orti 11,
> > 40050 Funo di Argelato (BO)
> > P.I e C.F.
> > 00885711200
> > Tel. +39.335.8350919
> > Fax +39.051.8659009
> >
> > www.aurion-tech.com
> >
> > account telefono VoIP skype (www.skype.com):
> > aurion.giovagnini
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-sh" in
> > the body of a message to maj...@vg...
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-sh" in
> the body of a message to maj...@vg...
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

=2D-=20
=46abio Giovagnini

Aurion s.r.l.
via degli orti 11,
40050 Funo di Argelato (BO)
P.I e C.F.
00885711200
Tel. +39.335.8350919
=46ax +39.051.8659009

www.aurion-tech.com

account telefono VoIP skype (www.skype.com):
aurion.giovagnini