diff options
| author | Knut Petersen <Knut_Petersen@t-online.de> | 2005-09-09 13:04:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:58:02 -0700 |
| commit | 9fa68eae9f8291a98bfe00b94b78f72eb253165a (patch) | |
| tree | f3619e7302871a5d56264f6df4076c30857483ce /Documentation/fb/cyblafb/documentation | |
| parent | 6062bfa1644f401c08e78d5c8a161f7d11c5c830 (diff) | |
[PATCH] framebuffer: new driver for cyberblade/i1 graphics core
This is a framebuffer driver for the Cyberblade/i1 graphics core.
Currently tridenfb claims to support the cyberblade/i1 graphics core. This
is of very limited truth. Even vesafb is faster and provides more working
modes and a much better quality of the video signal. There is a great
number of bugs in tridentfb ... but most often it is impossible to decide
if these bugs are real bugs or if fixing them for the cyberblade/i1 core
would break support for one of the other supported chips.
Tridentfb seems to be unmaintained,and documentation for most of the
supported chips is not available. So "fixing" cyberblade/i1 support inside
of tridentfb was not an option, it would have caused numerous
if(CYBERBLADEi1) else ... cases and would have rendered the code to be
almost unmaintainable.
A first version of this driver was published on 2005-07-31. A fix for a
bug reported by Jochen Hein was integrated as well as some changes
requested by Antonino A. Daplas.
A message has been added to tridentfb to inform current users of tridentfb
to switch to cyblafb if the cyberblade/i1 graphics core is detected.
This patch is one logical change, but because of the included documentation
it is bigger than 70kb. Therefore it is not sent to lkml and
linux-fbdev-devel,
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/fb/cyblafb/documentation')
| -rw-r--r-- | Documentation/fb/cyblafb/documentation | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/fb/cyblafb/documentation b/Documentation/fb/cyblafb/documentation new file mode 100644 index 00000000000..bb1aac04842 --- /dev/null +++ b/Documentation/fb/cyblafb/documentation @@ -0,0 +1,17 @@ +Available Documentation +======================= + +Apollo PLE 133 Chipset VT8601A North Bridge Datasheet, Rev. 1.82, October 22, +2001, available from VIA: + + http://www.viavpsd.com/product/6/15/DS8601A182.pdf + +The datasheet is incomplete, some registers that need to be programmed are not +explained at all and important bits are listed as "reserved". But you really +need the datasheet to understand the code. "p. xxx" comments refer to page +numbers of this document. + +XFree/XOrg drivers are available and of good quality, looking at the code +there is a good idea if the datasheet does not provide enough information +or if the datasheet seems to be wrong. + |