lcd and backlight module class

lcd and backlight module class

[Jamey Hicks]

A while back I posted a note to arm-linux-kernel about developing some 
low-level API's to separate out platform-specific code from drivers such 
as sa1100fb.c.
  
http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2003-July/016235.html

As a particular example, the sa1100fb driver is cluttered with the 
platform initialization and control code for the many SA11x0-based 
platforms supported by the ARM linux kernel.  My thought is that the new 
device model gives a good framework to decouple the fbdev drivers and 
the platforms.  I've been busy with other things, so progress on this 
has been slower than I hoped.  But I have prototyped it.  For usespace 
access to these controls, I envision sysfs attributes.  I also think 
that the fb drivers might register an interface with the lcd/backlight 
classes so that they can be notified if an LCD is hotplugged.  It  would 
also help loosen the dependence on link/initialization order.

Anyway, please review and comment on this patch:

http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1696/1

There are uses of lcd module in subsequent ipaq patches, such as this
one:
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1699/1

Thanks,
Jamey Hicks







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