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Eric Miao 198fc108ee [ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices ... PXA27x and later processors support overlay1 and overlay2 on-top of the base framebuffer (although under-neath the base is also possible). They support palette and no-palette RGB formats, as well as YUV formats (only available on overlay2). These overlays have dedicated DMA channels and behave in a similar way as a framebuffer. This heavily simplified and re-structured work is based on the original pxafb_overlay.c (which is pending for mainline merge for a long time). The major problems with this pxafb_overlay.c are (if you are interested in the history): 1. heavily redundant (the control logics for overlay1 and overlay2 are actually identical except for some small operations, which are now abstracted into a 'pxafb_layer_ops' structure) 2. a lot of useless and un-tested code (two workarounds which are now fixed on mature silicons) 3. cursorfb is actually useless, hardware cursor should not be used this way, and the code was actually un-tested for a long time. The code in this patch should be self-explanatory, I tried to add minimum comments. As said, this is basically simplified, there are several things still on the pending list: 1. palette mode is un-supported and un-tested (although re-using the palette code of the base framebuffer is actually very easy now with previous clean-up patches) 2. fb_pan_display for overlay(s) is un-supported 3. the base framebuffer can actually be abstracted by 'pxafb_layer' as well, which will help further re-use of the code and keep a better and consistent structure. (This is the reason I named it 'pxafb_layer' instead of 'pxafb_overlay' or something alike) See Documentation/fb/pxafb.txt for additional usage information. Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Eric Miao <ycmiao@ycmiao-hp520.(none)>		16 years ago
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cyblafb	[PATCH] Update cyblafb driver	19 years ago
00-INDEX	…
arkfb.txt	…
aty128fb.txt	…
cirrusfb.txt	…
cmap_xfbdev.txt	fbdev: defio and Metronomefb	17 years ago
deferred_io.txt	…
fbcon.txt	…
framebuffer.txt	…
gxfb.txt	…
imacfb.txt	…
intel810.txt	…
intelfb.txt	…
internals.txt	…
lxfb.txt	…
matroxfb.txt	…
metronomefb.txt	…
modedb.txt	…
pvr2fb.txt	…
pxafb.txt	[ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices	16 years ago
s3fb.txt	s3fb: driver fixes	18 years ago
sa1100fb.txt	…
sh7760fb.txt	video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver	17 years ago
sisfb.txt	…
sstfb.txt	…
tgafb.txt	…
tridentfb.txt	…
uvesafb.txt	…
vesafb.txt	[PATCH] vesafb: Disable mtrr as the default	19 years ago
viafb.modes	…
viafb.txt	…
vt8623fb.txt	…