[RFC 2.6.26-rc9 0/5] am200epd, pxafb, metronomefb changes v5

Hi Eric, arm and fbdev friends,

This is version 5 of this RFC and contains the following updates:
- fix unnecessary error assignment
- get rid of unnecessary ifdef's in gpio init
- remove incorrect clk32K disable
- add warning if clk32K is not enabled by bootloader
- combine the move of am200epd to mach-pxa with the conversion to new code
- get rid of use of direct setting of LCCR
- get rid of set_irq_type
- get rid of RTSL
- rebase code to using .26rc9 + linux-2.6-arm.git/pxa

Thanks to Krzysztof and Eric for feedback.

This RFC consists of patches intended to improve the condition of the
am200epd devkit support. The am200epd devkit contains a gumstix (pxa255) and
a carrier board (am200epd or Lyre), and a metronome display controller.
Previously, there was a drivers/video/am200epd driver that manipulated pxa
LCDC registers and GPSR/GPLR registers directly. That was clearly wrong and
broken so I have removed it and written a new mach-pxa am200epd support
driver.This driver interfaces with pxafb through a set of callbacks to
share/unshare pxafb's framebuffer and achieves the same functionality without
manipulating any pxa registers directly. The patches are split as follows:

pxafb: add shared framebuffer interface
gumstix: conversion to MFP support and add bluetooth support
am200epd: convert to shared fb and use gpio api
metronomefb: convert printk to dev_dbg/err messages
metronomefb: changes to use separate framebuffer

I would be grateful for any feedback and advice.

Thanks,
jaya


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