[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>

1 files changed, 30 insertions, 1 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index e906b5421795..e27aefd49ea3 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1177,6 +1177,32 @@ config FB_VOODOO1
           Please read the <file:Documentation/fb/README-sstfb.txt> for supported
           options and other important info  support.
 
+config FB_CYBLA
+        tristate "Cyberblade/i1 support"
+        depends on FB && PCI
+        select FB_CFB_IMAGEBLIT
+        select FB_SOFT_CURSOR
+        select VIDEO_SELECT
+        ---help---
+          This driver is supposed to support the Trident Cyberblade/i1
+          graphics core integrated in the VIA VT8601A North Bridge,
+          also known as VIA Apollo PLE133.
+
+          Status:
+           - Developed, tested and working on EPIA 5000 and EPIA 800.
+           - Does work reliable on all systems with CRT/LCD connected to
+             normal VGA ports.
+           - Should work on systems that do use the internal LCD port, but
+             this is absolutely not tested.
+
+          Character imageblit, copyarea and rectangle fill are hw accelerated,
+          ypan scrolling is used by default.
+
+          Please do read <file:Documentation/fb/cyblafb/*>.
+
+          To compile this driver as a module, choose M here: the
+          module will be called cyblafb.
+
 config FB_TRIDENT
         tristate "Trident support"
         depends on FB && PCI
@@ -1190,8 +1216,12 @@ config FB_TRIDENT
           but also on some motherboards. For more information, read
           <file:Documentation/fb/tridentfb.txt>
 
+          Cyberblade/i1 support will be removed soon, use the cyblafb driver
+          instead.
+
           Say Y if you have such a graphics board.
 
+
           To compile this driver as a module, choose M here: the
           module will be called tridentfb.
 
@@ -1202,7 +1232,6 @@ config FB_TRIDENT_ACCEL
         This will compile the Trident frame buffer device with
         acceleration functions.
 
-
 config FB_PM3
         tristate "Permedia3 support"
         depends on FB && PCI && BROKEN