[lcd4linux] uClinux patch.

[Hans E. <ha...@ru...>]

Hi lcd4linux users and developers.

Im involved in a project running related to running systems onuClinux on 
Blackfin. Recently i got the task to implement the hardware and software 
needed for a HD44780 LCD via I2C for the blackfin. Doing that i got the ide 
to try to port either lcdproc or lcd4linux. Lcdproc failed on some shared 
library build(may persue that later) but i made a successful build of 
lcd4linux and i have also made a uClinux patch for HD44780 over i2c(via 
pfc8574). Has this been done? Tried to search for any other LCD-uClinux 
projects but with no luck. Instructions on how to set it up, and also notes 
on the patch at:

http://www.vpx.nu/dokuwiki/doku.php?id=displays

Also, note that i did(in function rep_nop for the delays)
-    __asm__ __volatile__("rep; nop");
+    __asm__ __volatile__("nop");

since i think rep is IA32 specific. Dont know if this is a good final solution 
for all platforms.

Im sure some developer can use the patch and incorporate it to a future 
release in a sweet mannner, a configure switch of --with-uclinux would be 
nice:). Im not a make guru so i did not do it so fancy. Hope anyone else can 
try it out on their embedded system.

regards

Hans Eklund
Developer
www.rubico.se
blackfin.uclinux.org