Re: [Lcd-linux] lcd over gpio

[Claudio <cla...@gm...>]

Dear mattia,
let me introduce a different scenario.

2011/1/18 Mattia Jona-Lasinio <mat...@gm...>:
> Hi,
>
> the implementation of GPIO lines would certainly be a valuable feature
> to add to lcd-linux. Presently there is no plan to go in that
> direction but it can be put in the TODO list. Another feature would be
> to add an input line by using the input pins of the parallel port but
> in my opinion the most urgent feature is to move from a parallel port
> connection to something more modern and universal like USB.

The USB device are really different each other and support for its
could be difficult and inefficient, beside on embedded devices
generally you want to use the USB port for something more useful.

The gpio implementaion instread allow you to support a huge range of
embedded devices like router, develop board as well some routerboard
or industial board; moreover you can use a USB to GPIO adapter (like
ftdi) and then connect any kind of lcd also on you modern laptop/pc
(that typically don't have parport or gpio).
The parport implementation is hacky and should be mainained just for
history but it is de facto obsolete(how many device you can found with
parport today in your home?).

In this scenario the GPIO support is priority and such version of
lcd-linux is, in imho, also more acceptable by mainline kernel.

Best regards