Re: [Lcd4linux-devel] progress report RE: HD44780 stuff

[Martin H. <ma...@he...>]

Hi Michael,

Michael Reinelt wrote:
> (Martin, are you listening?)
I am :-)

> Martin's special gpio-parport-soekris-whatever-it-is-called-today 
> implementation that is capable of using 4 bits as input and 4 for output 
> can be handled exactly this way!
> 
> So the user has to specify a "Model" in the config, if he specifies 
> "gpio" (or however you want to call it, Martin), we suppose the user 
> knows what he's doing, and allow 4-bit-busyflag. With all other models, 
> we permit it.
> 
> Now that's what I call a clean solution!
Sounds like a good idea to me. Right now, I don't really have a clue 
about how that would be implemented cleanly (since everything would be 
shared except the init-function (where the driver doesn't bail out with 
an error message, if 4-bit-mode and busy-flag is requested) and the 
actual "query_busy_flag" function itself.

In both functions, the code that differs is only a couple of lines (so 
duplicating all the other code would not be desirable).

But as I said - I like the idea a lot (even if I don't share your view 
that the user knows what [s]he's doing :-))

Martin