fbdev minor and major numbers, which file to believe, and other stuff

[Sven L. <lu...@dp...>]

Hello, ...

I am running pm3fb wrotten by Romain dolbeau in the 2.4.2 kernel, and looking
trough the documentation file, i noticed the following :

linux/Documentation/fb/framebuffer.txt says :

By convention, the following device nodes are used (numbers indicate the
device minor numbers):

      0 = /dev/fb0      First frame buffer
      1 = /dev/fb1      Second frame buffer
      ...
     31 = /dev/fb31     32nd frame buffer

but linux/Documentation/devices.txt says :

 29 char        Universal frame buffer
                  0 = /dev/fb0          First frame buffer
                 32 = /dev/fb1          Second frame buffer
                ...
                224 = /dev/fb7          Eighth frame buffer

                All additional minor numbers are reserved.  

Which one should i believe ? Notice, that on my debian system, MAKEDEV is
building fb# conforming to the devices.txt stuff, (makedev version
2.3.1-50.1). this is from unstable (but a few weeks old already).

Another 2 question i have, concerning the pm3fb fbdev :

  * pm3fb_setup never does get called, altough it is listed in fbmem.c at the
    right place, i think. As a consequence of this all options are ignored.
    What is wrong here ?
			    
  * i have two pm3 on the same board, which both get allocated a fbdev (well
    fb0 and fb1). But all console are still on fb0, and con2fbmap 2 /dev/fb1,
    which should but console 2 (or 3) on /dev/fb1 does nothing ...


Friendly,

Sven Luther