[Linux-fbdev-users] How detect Driver/Hardware capabilities

[Andrea M. <ama...@us...>]

How can I detect the capabilities of a FrameBuffer driver and
video board ?

I have an application which generates at runtime the required
modelines. For this pourpuse I need to know exactly which
capabilities are available in the underline FrameBuffer
software/hardware.

For example, I have a GeForge 2 board without hardware INTERLACE
support. But I haven't found a way to detect this misfeature from
user level using the FrameBuffer API. The same apply for DOUBLESCAN
modes, at present the Nvidia driver does not support them, but the
driver is not reporting this misfeature in any way.

Essentially I need a API call to probe the capabilities of the active
Frame Buffer hardware/driver.

-- 
Andrea Mazzoleni
935A 2D3C 5C70 BCD6 CB0C  ED89 7C19 4321 6340 3F6D