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authorKnut Petersen <Knut_Petersen@t-online.de>2006-01-09 15:04:20 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-09 10:00:36 -0800
commit44637a12f80b80157d9c1bc5b7d6ef09c9e05713 (patch)
tree17384805725f7b429685ba4cad0d9488d93f9f25 /Documentation/fb/cyblafb
parent8b78e83bfbc12f7e9bdefd400abdfde9e6c9ac51 (diff)
downloadop-kernel-dev-44637a12f80b80157d9c1bc5b7d6ef09c9e05713.zip
op-kernel-dev-44637a12f80b80157d9c1bc5b7d6ef09c9e05713.tar.gz
[PATCH] Update cyblafb driver
This is a major update to the cyblafb framebuffer driver. Most of the stuff has been tested in the mm tree. Main advantages: ============ - vxres > xres support - ywrap and xpan support - much faster for almost all modes (e.g. 1280x1024-16bpp draws more than 41 full screens of text instead of about 25 full screens of text per second on authors Epia 5000) - module init/exit code fixed - bugs triggered by console rotation fixed - lots of minor improvements - startup modes suitable for high performance scrolling in all directions This diff also contains a lot of white space fixes. No side effects are possible, only one single graphics core is affected. Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/fb/cyblafb')
-rw-r--r--Documentation/fb/cyblafb/bugs1
-rw-r--r--Documentation/fb/cyblafb/fb.modes57
-rw-r--r--Documentation/fb/cyblafb/performance1
-rw-r--r--Documentation/fb/cyblafb/todo5
-rw-r--r--Documentation/fb/cyblafb/usage33
-rw-r--r--Documentation/fb/cyblafb/whatsnew29
6 files changed, 81 insertions, 45 deletions
diff --git a/Documentation/fb/cyblafb/bugs b/Documentation/fb/cyblafb/bugs
index f90cc66..9443a6d 100644
--- a/Documentation/fb/cyblafb/bugs
+++ b/Documentation/fb/cyblafb/bugs
@@ -11,4 +11,3 @@ Untested features
All LCD stuff is untested. If it worked in tridentfb, it should work in
cyblafb. Please test and report the results to Knut_Petersen@t-online.de.
-
diff --git a/Documentation/fb/cyblafb/fb.modes b/Documentation/fb/cyblafb/fb.modes
index cf4351f..fe0e522 100644
--- a/Documentation/fb/cyblafb/fb.modes
+++ b/Documentation/fb/cyblafb/fb.modes
@@ -14,142 +14,141 @@
#
mode "640x480-50"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 47619 4294967256 24 17 0 216 3
endmode
mode "640x480-60"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 39682 4294967256 24 17 0 216 3
endmode
mode "640x480-70"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 34013 4294967256 24 17 0 216 3
endmode
mode "640x480-72"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 33068 4294967256 24 17 0 216 3
endmode
mode "640x480-75"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 31746 4294967256 24 17 0 216 3
endmode
mode "640x480-80"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 29761 4294967256 24 17 0 216 3
endmode
mode "640x480-85"
- geometry 640 480 640 3756 8
+ geometry 640 480 2048 4096 8
timings 28011 4294967256 24 17 0 216 3
endmode
mode "800x600-50"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 30303 96 24 14 0 136 11
endmode
mode "800x600-60"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 25252 96 24 14 0 136 11
endmode
mode "800x600-70"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 21645 96 24 14 0 136 11
endmode
mode "800x600-72"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 21043 96 24 14 0 136 11
endmode
mode "800x600-75"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 20202 96 24 14 0 136 11
endmode
mode "800x600-80"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 18939 96 24 14 0 136 11
endmode
mode "800x600-85"
- geometry 800 600 800 3221 8
+ geometry 800 600 2048 4096 8
timings 17825 96 24 14 0 136 11
endmode
mode "1024x768-50"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 19054 144 24 29 0 120 3
endmode
mode "1024x768-60"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 15880 144 24 29 0 120 3
endmode
mode "1024x768-70"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 13610 144 24 29 0 120 3
endmode
mode "1024x768-72"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 13232 144 24 29 0 120 3
endmode
mode "1024x768-75"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 12703 144 24 29 0 120 3
endmode
mode "1024x768-80"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 11910 144 24 29 0 120 3
endmode
mode "1024x768-85"
- geometry 1024 768 1024 2815 8
+ geometry 1024 768 2048 4096 8
timings 11209 144 24 29 0 120 3
endmode
mode "1280x1024-50"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 11114 232 16 39 0 160 3
endmode
mode "1280x1024-60"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 9262 232 16 39 0 160 3
endmode
mode "1280x1024-70"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 7939 232 16 39 0 160 3
endmode
mode "1280x1024-72"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 7719 232 16 39 0 160 3
endmode
mode "1280x1024-75"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 7410 232 16 39 0 160 3
endmode
mode "1280x1024-80"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 6946 232 16 39 0 160 3
endmode
mode "1280x1024-85"
- geometry 1280 1024 1280 2662 8
+ geometry 1280 1024 2048 4096 8
timings 6538 232 16 39 0 160 3
endmode
-
diff --git a/Documentation/fb/cyblafb/performance b/Documentation/fb/cyblafb/performance
index eb4e47a..8d15d5d 100644
--- a/Documentation/fb/cyblafb/performance
+++ b/Documentation/fb/cyblafb/performance
@@ -77,4 +77,3 @@ patch that speeds up kernel bitblitting a lot ( > 20%).
| | | | |
| | | | |
+-----------+-----------------+-----------------+-----------------+
-
diff --git a/Documentation/fb/cyblafb/todo b/Documentation/fb/cyblafb/todo
index 80fb2f8..c5f6d0e 100644
--- a/Documentation/fb/cyblafb/todo
+++ b/Documentation/fb/cyblafb/todo
@@ -22,11 +22,10 @@ accelerated color blitting Who needs it? The console driver does use color
everything else is done using color expanding
blitting of 1bpp character bitmaps.
-xpanning Who needs it?
-
ioctls Who needs it?
-TV-out Will be done later
+TV-out Will be done later. Use "vga= " at boot time
+ to set a suitable video mode.
??? Feel free to contact me if you have any
feature requests
diff --git a/Documentation/fb/cyblafb/usage b/Documentation/fb/cyblafb/usage
index e627c8f..a39bb3d 100644
--- a/Documentation/fb/cyblafb/usage
+++ b/Documentation/fb/cyblafb/usage
@@ -40,6 +40,16 @@ Selecting Modes
None of the modes possible to select as startup modes are affected by
the problems described at the end of the next subsection.
+ For all startup modes cyblafb chooses a virtual x resolution of 2048,
+ the only exception is mode 1280x1024 in combination with 32 bpp. This
+ allows ywrap scrolling for all those modes if rotation is 0 or 2, and
+ also fast scrolling if rotation is 1 or 3. The default virtual y reso-
+ lution is 4096 for bpp == 8, 2048 for bpp==16 and 1024 for bpp == 32,
+ again with the only exception of 1280x1024 at 32 bpp.
+
+ Please do set your video memory size to 8 Mb in the Bios setup. Other
+ values will work, but performace is decreased for a lot of modes.
+
Mode changes using fbset
========================
@@ -54,20 +64,26 @@ Selecting Modes
- if a flat panel is found, cyblafb does not allow you
to program a resolution higher than the physical
resolution of the flat panel monitor
- - cyblafb does not allow xres to differ from xres_virtual
- cyblafb does not allow vclk to exceed 230 MHz. As 32 bpp
and (currently) 24 bit modes use a doubled vclk internally,
the dotclock limit as seen by fbset is 115 MHz for those
modes and 230 MHz for 8 and 16 bpp modes.
+ - cyblafb will allow you to select very high resolutions as
+ long as the hardware can be programmed to these modes. The
+ documented limit 1600x1200 is not enforced, but don't expect
+ perfect signal quality.
- Any request that violates the rules given above will be ignored and
- fbset will return an error.
+ Any request that violates the rules given above will be either changed
+ to something the hardware supports or an error value will be returned.
If you program a virtual y resolution higher than the hardware limit,
cyblafb will silently decrease that value to the highest possible
- value.
+ value. The same is true for a virtual x resolution that is not
+ supported by the hardware. Cyblafb tries to adapt vyres first because
+ vxres decides if ywrap scrolling is possible or not.
- Attempts to disable acceleration are ignored.
+ Attempts to disable acceleration are ignored, I believe that this is
+ safe.
Some video modes that should work do not work as expected. If you use
the standard fb.modes, fbset 640x480-60 will program that mode, but
@@ -129,10 +145,6 @@ mode 640x480 or 800x600 or 1024x768 or 1280x1024
verbosity 0 is the default, increase to at least 2 for every
bug report!
-vesafb allows cyblafb to be loaded after vesafb has been
- loaded. See sections "Module unloading ...".
-
-
Development hints
=================
@@ -195,7 +207,7 @@ a graphics mode.
After booting, load cyblafb without any mode and bpp parameter and assign
cyblafb to individual ttys using con2fb, e.g.:
- modprobe cyblafb vesafb=1
+ modprobe cyblafb
con2fb /dev/fb1 /dev/tty1
Unloading cyblafb works without problems after you assign vesafb to all
@@ -203,4 +215,3 @@ ttys again, e.g.:
con2fb /dev/fb0 /dev/tty1
rmmod cyblafb
-
diff --git a/Documentation/fb/cyblafb/whatsnew b/Documentation/fb/cyblafb/whatsnew
new file mode 100644
index 0000000..76c07a2
--- /dev/null
+++ b/Documentation/fb/cyblafb/whatsnew
@@ -0,0 +1,29 @@
+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.
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