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fbdev: platforming metronomefb and am200epd

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This patch splits metronomefb into the platform independent metronomefb and
the platform dependent am200epd.

Signed-off-by: Jaya Kumar <[email protected]>
Cc: "Antonino A. Daplas" <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jaya Kumar 2008-04-28 02:15:38 -07:00 • committed by Linus Torvalds
commit 03c33a4f00
6 changed files with 422 additions and 282 deletions
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16
Documentation/fb/metronomefb.txt
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@ -1,7 +1,7 @@
Metronomefb
-----------
Maintained by Jaya Kumar <jayakumar.lkml.gmail.com>
Last revised: Nov 20, 2007
Last revised: Mar 10, 2008
Metronomefb is a driver for the Metronome display controller. The controller
is from E-Ink Corporation. It is intended to be used to drive the E-Ink
@ -11,20 +11,18 @@ display media here http://www.e-ink.com/products/matrix/metronome.html .
Metronome is interfaced to the host CPU through the AMLCD interface. The
host CPU generates the control information and the image in a framebuffer
which is then delivered to the AMLCD interface by a host specific method.
Currently, that's implemented for the PXA's LCDC controller. The display and
error status are each pulled through individual GPIOs.
The display and error status are each pulled through individual GPIOs.
Metronomefb was written for the PXA255/gumstix/lyre combination and
therefore currently has board set specific code in it. If other boards based on
other architectures are available, then the host specific code can be separated
and abstracted out.
Metronomefb is platform independent and depends on a board specific driver
to do all physical IO work. Currently, an example is implemented for the
PXA board used in the AM-200 EPD devkit. This example is am200epd.c
Metronomefb requires waveform information which is delivered via the AMLCD
interface to the metronome controller. The waveform information is expected to
be delivered from userspace via the firmware class interface. The waveform file
can be compressed as long as your udev or hotplug script is aware of the need
to uncompress it before delivering it. metronomefb will ask for waveform.wbf
which would typically go into /lib/firmware/waveform.wbf depending on your
to uncompress it before delivering it. metronomefb will ask for metronome.wbf
which would typically go into /lib/firmware/metronome.wbf depending on your
udev/hotplug setup. I have only tested with a single waveform file which was
originally labeled 23P01201_60_WT0107_MTC. I do not know what it stands for.
Caution should be exercised when manipulating the waveform as there may be