Messages in this thread | | | Date | Thu, 22 Jul 2010 12:21:11 +0100 | From | Alan Cox <> | Subject | Re: Introducing the LCD-Linux project |
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On Wed, 21 Jul 2010 14:57:54 +0200 Mattia Jona-Lasinio <mattia.jona@gmail.com> wrote:
> Hi, > > this is to introduce the LCD-Linux project (http://lcd-linux.sourceforge.net/), > a kernel level implementation of a VT102 terminal emulator, optimized for small > alphanumeric and graphic displays.
The kernel already has a console and that provides an abstract implementation that is used for everything from text mode displays to vga to assorted accelerated hardware platforms.
Why do we need a VT102 as well ?
> functions. A solution is therefore to provide a sort of minimal terminal > emulation in kernel space, that can be accessed through the standard character > device interface. In this way the problem of the display management is reduced
If you use the existing kernel console interfaces then you don't need to worry about vt102 v console or having two terminal emulations running.
The basic idea seems sound enough other than that. Another reason for using the kernel console/vt driver is that you can then also support mini bitmap displays because a frame buffer driver backed by a driver for a suitable LCD panel can work nicely because the vt driver can sit on the fb layer quite happily and fb then implements low level handling for the pixels.
Alan
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