Video Driver - Embedded

This is a discussion on Video Driver - Embedded ; I'm looking at integrating a 65545 vga graphics controller chip into an embedded linux platform. I'll need to write a driver for it, but I'm not sure where to start. It's a fairly common chip, so I suspect that there's ...

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Thread: Video Driver

  1. Video Driver



    I'm looking at integrating a 65545 vga graphics controller chip into
    an embedded linux platform. I'll need to write a driver for it, but
    I'm not sure where to start. It's a fairly common chip, so I suspect
    that there's probably a driver out there already. Where would I find
    the source code? Could anyone point me to some resources and writing
    video drivers?

    Thanks

    Dan

  2. Re: Video Driver

    Dan,
    > I'm looking at integrating a 65545 vga graphics controller chip into
    > an embedded linux platform. I'll need to write a driver for it, but
    > I'm not sure where to start. It's a fairly common chip, so I suspect
    > that there's probably a driver out there already. Where would I find
    > the source code? Could anyone point me to some resources and writing
    > video drivers?

    It's a standard VGA chipset, so the linux kernel can talk directly to it in text mode.
    If you want graphics, then you'll need to use SVGALib, kernel framebuffer or an X
    server (i.e. XFree86, X.org)
    A quick google just showed up pre-written drivers for all of these, look for Chips &
    Technologies CT-65545.

    regards,

    --
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~
    Damion de Soto - Software Engineer email: damion@snapgear.com
    SnapGear - A CyberGuard Company --- ph: +61 7 3435 2809
    | Custom Embedded Solutions fax: +61 7 3891 3630
    | and Security Appliances web: http://www.snapgear.com
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~
    --- Free Embedded Linux Distro at http://www.snapgear.org ---

  3. Re: Video Driver

    On Thu, 16 Jun 2005 16:43:02 +1000, Damion de Soto
    wrote:

    >It's a standard VGA chipset, so the linux kernel can talk directly to it in text mode.
    >If you want graphics, then you'll need to use SVGALib, kernel framebuffer or an X
    >server (i.e. XFree86, X.org)


    My understanding is that i need a kernel framebuffer and nano-X.

    >A quick google just showed up pre-written drivers for all of these, look for Chips &
    >Technologies CT-65545.


    This isn't an i386 platform, so I'll need source code. Where would I
    go about finding it? Sorry if the answer seems obvious.

    Dan


  4. Re: Video Driver

    Dan wrote:
    >
    >>It's a standard VGA chipset, so the linux kernel can talk directly to it in text mode.
    >>If you want graphics, then you'll need to use SVGALib, kernel framebuffer or an X
    >>server (i.e. XFree86, X.org)

    >
    > My understanding is that i need a kernel framebuffer and nano-X.

    I'm not familiar with nano-X, but that sounds like a useable solution.

    >>A quick google just showed up pre-written drivers for all of these, look for Chips &
    >>Technologies CT-65545.

    >
    > This isn't an i386 platform, so I'll need source code. Where would I
    > go about finding it? Sorry if the answer seems obvious.

    Actually, upon further searching, it looks like there isn't a kernel framebuffer
    driver, but SVGAlib and XFree86 are open source so you should be able to use driver
    code from either of them.

    regards,

    --
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~
    Damion de Soto - Software Engineer email: damion@snapgear.com
    SnapGear - A CyberGuard Company --- ph: +61 7 3435 2809
    | Custom Embedded Solutions fax: +61 7 3891 3630
    | and Security Appliances web: http://www.snapgear.com
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~
    --- Free Embedded Linux Distro at http://www.snapgear.org ---

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