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authorAndres Salomon <dilinger@queued.net>2008-04-28 02:15:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:39 -0700
commitc805df3d6205573fa7a8ef2334b1c8d67381dc8b (patch)
tree9cdf231771e48460fbacedb16f8ec8465850f742 /Documentation
parentf694e53bd0db69557ee8e0db2d1602818ff173b0 (diff)
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lxfb: rename kernel arg fbsize to vram
Match other fb drivers (including gxfb). Also, document the current boot arguments in Documentation/fb/lxfb.txt. Signed-off-by: Andres Salomon <dilinger@debian.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/fb/lxfb.txt50
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/fb/lxfb.txt b/Documentation/fb/lxfb.txt
new file mode 100644
index 000000000000..80656078d4d9
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+++ b/Documentation/fb/lxfb.txt
@@ -0,0 +1,50 @@
+[This file is cloned from VesaFB/aty128fb]
+
+What is lxfb?
+=================
+
+This is a graphics framebuffer driver for AMD Geode LX based processors.
+
+Advantages:
+
+ * No need to use AMD's VSA code (or other VESA emulation layer) in the
+ BIOS.
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode...
+
+
+How to use it?
+==============
+
+Switching modes is done using lxfb.mode_option=<resolution>... boot
+parameter or using `fbset' program.
+
+See Documentation/fb/modedb.txt for more information on modedb
+resolutions.
+
+
+X11
+===
+
+XF68_FBDev should generally work fine, but it is non-accelerated.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to lxfb with lxfb.<option>.
+For example, lxfb.mode_option=800x600@75.
+Accepted options:
+
+mode_option - specify the video mode. Of the form
+ <x>x<y>[-<bpp>][@<refresh>]
+vram - size of video ram (normally auto-detected)
+
+--
+Andres Salomon <dilinger@debian.org>