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authorKrzysztof Helt <krzysztof.h1@wp.pl>2009-03-31 15:25:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:33 -0700
commitddb53d48da5b0e691f35e703ac29118747f86c99 (patch)
treebdf0f4a6f3e74a87e5b2ccb9530f708eed6258d2 /Documentation/fb/cyblafb/whatsnew
parentec549a0fdc32171b26677f1ef0b5309faa743362 (diff)
fbdev: remove cyblafb driver
A tridentfb driver has all the functionality of the cyblafb driver without the bugs of the latter. Changes to the tridentfb driver: - FBINFO_READS_FAST added to the tridentfb. The cyblafb used a blitter for scrolling which is faster than color expansion on Cyberblade chipsets. The blitter is slower on a discrete Blade3D core. Use the blitter for scrolling in the tridentfb only for integrated Blade3D cores. Now, scrolling speed is about equal for the tridentfb and the cyblafb. - a copyright notice addition is done on request of Jani Monoses (the first author of the tridentfb). Tested on AGP Blade3D card and PCChips M787CLR motherboard: VIA C3 cpu + VT8601 north bridge (aka Cyberblade/i1). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Jani Monoses" <jani@ubuntu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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-0.62
-====
-
- - the vesafb parameter has been removed as I decided to allow the
- feature without any special parameter.
-
- - Cyblafb does not use the vga style of panning any longer, now the
- "right view" register in the graphics engine IO space is used. Without
- that change it was impossible to use all available memory, and without
- access to all available memory it is impossible to ywrap.
-
- - The imageblit function now uses hardware acceleration for all font
- widths. Hardware blitting across pixel column 2048 is broken in the
- cyberblade/i1 graphics core, but we work around that hardware bug.
-
- - modes with vxres != xres are supported now.
-
- - ywrap scrolling is supported now and the default. This is a big
- performance gain.
-
- - default video modes use vyres > yres and vxres > xres to allow
- almost optimal scrolling speed for normal and rotated screens
-
- - some features mainly usefull for debugging the upper layers of the
- framebuffer system have been added, have a look at the code
-
- - fixed: Oops after unloading cyblafb when reading /proc/io*
-
- - we work around some bugs of the higher framebuffer layers.