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fbdev: remove cyblafb driver

Browse source 
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>
This commit is contained in:
Krzysztof Helt 2009-03-31 15:25:40 -07:00 committed by Linus Torvalds
parent ec549a0fdc
commit ddb53d48da
13 changed files with 7 additions and 2344 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Documentation/fb/00-INDEX
View file

@ -11,8 +11,6 @@ aty128fb.txt
- info on the ATI Rage128 frame buffer driver.
cirrusfb.txt
- info on the driver for Cirrus Logic chipsets.
cyblafb/
- directory with documentation files related to the cyblafb driver.
deferred_io.txt
- an introduction to deferred IO.
fbcon.txt

13
Documentation/fb/cyblafb/bugs
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@ -1,13 +0,0 @@
Bugs
====
I currently don't know of any bug. Please do send reports to:
- linux-fbdev-devel@lists.sourceforge.net
- Knut_Petersen@t-online.de.
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.

7
Documentation/fb/cyblafb/credits
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@ -1,7 +0,0 @@
Thanks to
=========
* Alan Hourihane, for writing the X trident driver
* Jani Monoses, for writing the tridentfb driver
* Antonino A. Daplas, for review of the first published
version of cyblafb and some code
* Jochen Hein, for testing and a helpfull bug report

17
Documentation/fb/cyblafb/documentation
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@ -1,17 +0,0 @@
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.

154
Documentation/fb/cyblafb/fb.modes
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@ -1,154 +0,0 @@
#
# Sample fb.modes file
#
# Provides an incomplete list of working modes for
# the cyberblade/i1 graphics core.
#
# The value 4294967256 is used instead of -40. Of course, -40 is not
# a really reasonable value, but chip design does not always follow
# logic. Believe me, it's ok, and it's the way the BIOS does it.
#
# fbset requires 4294967256 in fb.modes and -40 as an argument to
# the -t parameter. That's also not too reasonable, and it might change
# in the future or might even be differt for your current version.
#
mode "640x480-50"
geometry 640 480 2048 4096 8
timings 47619 4294967256 24 17 0 216 3
endmode
mode "640x480-60"
geometry 640 480 2048 4096 8
timings 39682 4294967256 24 17 0 216 3
endmode
mode "640x480-70"
geometry 640 480 2048 4096 8
timings 34013 4294967256 24 17 0 216 3
endmode
mode "640x480-72"
geometry 640 480 2048 4096 8
timings 33068 4294967256 24 17 0 216 3
endmode
mode "640x480-75"
geometry 640 480 2048 4096 8
timings 31746 4294967256 24 17 0 216 3
endmode
mode "640x480-80"
geometry 640 480 2048 4096 8
timings 29761 4294967256 24 17 0 216 3
endmode
mode "640x480-85"
geometry 640 480 2048 4096 8
timings 28011 4294967256 24 17 0 216 3
endmode
mode "800x600-50"
geometry 800 600 2048 4096 8
timings 30303 96 24 14 0 136 11
endmode
mode "800x600-60"
geometry 800 600 2048 4096 8
timings 25252 96 24 14 0 136 11
endmode
mode "800x600-70"
geometry 800 600 2048 4096 8
timings 21645 96 24 14 0 136 11
endmode
mode "800x600-72"
geometry 800 600 2048 4096 8
timings 21043 96 24 14 0 136 11
endmode
mode "800x600-75"
geometry 800 600 2048 4096 8
timings 20202 96 24 14 0 136 11
endmode
mode "800x600-80"
geometry 800 600 2048 4096 8
timings 18939 96 24 14 0 136 11
endmode
mode "800x600-85"
geometry 800 600 2048 4096 8
timings 17825 96 24 14 0 136 11
endmode
mode "1024x768-50"
geometry 1024 768 2048 4096 8
timings 19054 144 24 29 0 120 3
endmode
mode "1024x768-60"
geometry 1024 768 2048 4096 8
timings 15880 144 24 29 0 120 3
endmode
mode "1024x768-70"
geometry 1024 768 2048 4096 8
timings 13610 144 24 29 0 120 3
endmode
mode "1024x768-72"
geometry 1024 768 2048 4096 8
timings 13232 144 24 29 0 120 3
endmode
mode "1024x768-75"
geometry 1024 768 2048 4096 8
timings 12703 144 24 29 0 120 3
endmode
mode "1024x768-80"
geometry 1024 768 2048 4096 8
timings 11910 144 24 29 0 120 3
endmode
mode "1024x768-85"
geometry 1024 768 2048 4096 8
timings 11209 144 24 29 0 120 3
endmode
mode "1280x1024-50"
geometry 1280 1024 2048 4096 8
timings 11114 232 16 39 0 160 3
endmode
mode "1280x1024-60"
geometry 1280 1024 2048 4096 8
timings 9262 232 16 39 0 160 3
endmode
mode "1280x1024-70"
geometry 1280 1024 2048 4096 8
timings 7939 232 16 39 0 160 3
endmode
mode "1280x1024-72"
geometry 1280 1024 2048 4096 8
timings 7719 232 16 39 0 160 3
endmode
mode "1280x1024-75"
geometry 1280 1024 2048 4096 8
timings 7410 232 16 39 0 160 3
endmode
mode "1280x1024-80"
geometry 1280 1024 2048 4096 8
timings 6946 232 16 39 0 160 3
endmode
mode "1280x1024-85"
geometry 1280 1024 2048 4096 8
timings 6538 232 16 39 0 160 3
endmode

79
Documentation/fb/cyblafb/performance
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@ -1,79 +0,0 @@
Speed
=====
CyBlaFB is much faster than tridentfb and vesafb. Compare the performance data
for mode 1280x1024-[8,16,32]@61 Hz.
Test 1: Cat a file with 2000 lines of 0 characters.
Test 2: Cat a file with 2000 lines of 80 characters.
Test 3: Cat a file with 2000 lines of 160 characters.
All values show system time use in seconds, kernel 2.6.12 was used for
the measurements. 2.6.13 is a bit slower, 2.6.14 hopefully will include a
patch that speeds up kernel bitblitting a lot ( > 20%).
+-----------+-----------------------------------------------------+
| | not accelerated |
| TRIDENTFB +-----------------+-----------------+-----------------+
| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
| | noypan | ypan | noypan | ypan | noypan | ypan |
+-----------+--------+--------+--------+--------+--------+--------+
| Test 1 | 4.31 | 4.33 | 6.05 | 12.81 | ---- | ---- |
| Test 2 | 67.94 | 5.44 | 123.16 | 14.79 | ---- | ---- |
| Test 3 | 131.36 | 6.55 | 240.12 | 16.76 | ---- | ---- |
+-----------+--------+--------+--------+--------+--------+--------+
| Comments | | | completely bro- |
| | | | ken, monitor |
| | | | switches off |
+-----------+-----------------+-----------------+-----------------+
+-----------+-----------------------------------------------------+
| | accelerated |
| TRIDENTFB +-----------------+-----------------+-----------------+
| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
| | noypan | ypan | noypan | ypan | noypan | ypan |
+-----------+--------+--------+--------+--------+--------+--------+
| Test 1 | ---- | ---- | 20.62 | 1.22 | ---- | ---- |
| Test 2 | ---- | ---- | 22.61 | 3.19 | ---- | ---- |
| Test 3 | ---- | ---- | 24.59 | 5.16 | ---- | ---- |
+-----------+--------+--------+--------+--------+--------+--------+
| Comments | broken, writing | broken, ok only | completely bro- |
| | to wrong places | if bgcolor is | ken, monitor |
| | on screen + bug | black, bug in | switches off |
| | in fillrect() | fillrect() | |
+-----------+-----------------+-----------------+-----------------+
+-----------+-----------------------------------------------------+
| | not accelerated |
| VESAFB +-----------------+-----------------+-----------------+
| of 2.6.12 | 8 bpp | 16 bpp | 32 bpp |
| | noypan | ypan | noypan | ypan | noypan | ypan |
+-----------+--------+--------+--------+--------+--------+--------+
| Test 1 | 4.26 | 3.76 | 5.99 | 7.23 | ---- | ---- |
| Test 2 | 65.65 | 4.89 | 120.88 | 9.08 | ---- | ---- |
| Test 3 | 126.91 | 5.94 | 235.77 | 11.03 | ---- | ---- |
+-----------+--------+--------+--------+--------+--------+--------+
| Comments | vga=0x307 | vga=0x31a | vga=0x31b not |
| | fh=80kHz | fh=80kHz | supported by |
| | fv=75kHz | fv=75kHz | video BIOS and |
| | | | hardware |
+-----------+-----------------+-----------------+-----------------+
+-----------+-----------------------------------------------------+
| | accelerated |
| CYBLAFB +-----------------+-----------------+-----------------+
| | 8 bpp | 16 bpp | 32 bpp |
| | noypan | ypan | noypan | ypan | noypan | ypan |
+-----------+--------+--------+--------+--------+--------+--------+
| Test 1 | 8.02 | 0.23 | 19.04 | 0.61 | 57.12 | 2.74 |
| Test 2 | 8.38 | 0.55 | 19.39 | 0.92 | 57.54 | 3.13 |
| Test 3 | 8.73 | 0.86 | 19.74 | 1.24 | 57.95 | 3.51 |
+-----------+--------+--------+--------+--------+--------+--------+
| Comments | | | |
| | | | |
| | | | |
| | | | |
+-----------+-----------------+-----------------+-----------------+

31
Documentation/fb/cyblafb/todo
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@ -1,31 +0,0 @@
TODO / Missing features
=======================
Verify LCD stuff "stretch" and "center" options are
completely untested ... this code needs to be
verified. As I don't have access to such
hardware, please contact me if you are
willing run some tests.
Interlaced video modes The reason that interleaved
modes are disabled is that I do not know
the meaning of the vertical interlace
parameter. Also the datasheet mentions a
bit d8 of a horizontal interlace parameter,
but nowhere the lower 8 bits. Please help
if you can.
low-res double scan modes Who needs it?
accelerated color blitting Who needs it? The console driver does use color
blitting for nothing but drawing the penguine,
everything else is done using color expanding
blitting of 1bpp character bitmaps.
ioctls Who needs it?
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

217
Documentation/fb/cyblafb/usage
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@ -1,217 +0,0 @@
CyBlaFB is a framebuffer driver for the Cyberblade/i1 graphics core integrated
into the VIA Apollo PLE133 (aka vt8601) south bridge. It is developed and
tested using a VIA EPIA 5000 board.
Cyblafb - compiled into the kernel or as a module?
==================================================
You might compile cyblafb either as a module or compile it permanently into the
kernel.
Unless you have a real reason to do so you should not compile both vesafb and
cyblafb permanently into the kernel. It's possible and it helps during the
developement cycle, but it's useless and will at least block some otherwise
usefull memory for ordinary users.
Selecting Modes
===============
Startup Mode
============
First of all, you might use the "vga=???" boot parameter as it is
documented in vesafb.txt and svga.txt. Cyblafb will detect the video
mode selected and will use the geometry and timings found by
inspecting the hardware registers.
video=cyblafb vga=0x317
Alternatively you might use a combination of the mode, ref and bpp
parameters. If you compiled the driver into the kernel, add something
like this to the kernel command line:
video=cyblafb:1280x1024,bpp=16,ref=50 ...
If you compiled the driver as a module, the same mode would be
selected by the following command:
modprobe cyblafb mode=1280x1024 bpp=16 ref=50 ...
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
========================
You might use fbset to change the video mode, see "man fbset". Cyblafb
generally does assume that you know what you are doing. But it does
some checks, especially those that are needed to prevent you from
damaging your hardware.
- only 8, 16, 24 and 32 bpp video modes are accepted
- interlaced video modes are not accepted
- double scan video modes are not accepted
- 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 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 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. 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, 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
you will see a vertical area, about two characters wide, with only
much darker characters than the other characters on the screen.
Cyblafb does allow that mode to be set, as it does not violate the
official specifications. It would need a lot of code to reliably sort
out all invalid modes, playing around with the margin values will
give a valid mode quickly. And if cyblafb would detect such an invalid
mode, should it silently alter the requested values or should it
report an error? Both options have some pros and cons. As stated
above, none of the startup modes are affected, and if you set
verbosity to 1 or higher, cyblafb will print the fbset command that
would be needed to program that mode using fbset.
Other Parameters
================
crt don't autodetect, assume monitor connected to
standard VGA connector
fp don't autodetect, assume flat panel display
connected to flat panel monitor interface
nativex inform driver about native x resolution of
flat panel monitor connected to special
interface (should be autodetected)
stretch stretch image to adapt low resolution modes to
higer resolutions of flat panel monitors
connected to special interface
center center image to adapt low resolution modes to
higer resolutions of flat panel monitors
connected to special interface
memsize use if autodetected memsize is wrong ...
should never be necessary
nopcirr disable PCI read retry
nopciwr disable PCI write retry
nopcirb disable PCI read bursts
nopciwb disable PCI write bursts
bpp bpp for specified modes
valid values: 8 || 16 || 24 || 32
ref refresh rate for specified mode
valid values: 50 <= ref <= 85
mode 640x480 or 800x600 or 1024x768 or 1280x1024
if not specified, the startup mode will be detected
and used, so you might also use the vga=??? parameter
described in vesafb.txt. If you do not specify a mode,
bpp and ref parameters are ignored.
verbosity 0 is the default, increase to at least 2 for every
bug report!
Development hints
=================
It's much faster do compile a module and to load the new version after
unloading the old module than to compile a new kernel and to reboot. So if you
try to work on cyblafb, it might be a good idea to use cyblafb as a module.
In real life, fast often means dangerous, and that's also the case here. If
you introduce a serious bug when cyblafb is compiled into the kernel, the
kernel will lock or oops with a high probability before the file system is
mounted, and the danger for your data is low. If you load a broken own version
of cyblafb on a running system, the danger for the integrity of the file
system is much higher as you might need a hard reset afterwards. Decide
yourself.
Module unloading, the vfb method
================================
If you want to unload/reload cyblafb using the virtual framebuffer, you need
to enable vfb support in the kernel first. After that, load the modules as
shown below:
modprobe vfb vfb_enable=1
modprobe fbcon
modprobe cyblafb
fbset -fb /dev/fb1 1280x1024-60 -vyres 2662
con2fb /dev/fb1 /dev/tty1
...
If you now made some changes to cyblafb and want to reload it, you might do it
as show below:
con2fb /dev/fb0 /dev/tty1
...
rmmod cyblafb
modprobe cyblafb
con2fb /dev/fb1 /dev/tty1
...
Of course, you might choose another mode, and most certainly you also want to
map some other /dev/tty* to the real framebuffer device. You might also choose
to compile fbcon as a kernel module or place it permanently in the kernel.
I do not know of any way to unload fbcon, and fbcon will prevent the
framebuffer device loaded first from unloading. [If there is a way, then
please add a description here!]
Module unloading, the vesafb method
===================================
Configure the kernel:
<*> Support for frame buffer devices
[*] VESA VGA graphics support
<M> Cyberblade/i1 support
Add e.g. "video=vesafb:ypan vga=0x307" to the kernel parameters. The ypan
parameter is important, choose any vga parameter you like as long as it is
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
con2fb /dev/fb1 /dev/tty1
Unloading cyblafb works without problems after you assign vesafb to all
ttys again, e.g.:
con2fb /dev/fb0 /dev/tty1
rmmod cyblafb

29
Documentation/fb/cyblafb/whatsnew
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@ -1,29 +0,0 @@
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.

85
Documentation/fb/cyblafb/whycyblafb
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@ -1,85 +0,0 @@
I tried the following framebuffer drivers:
- TRIDENTFB is full of bugs. Acceleration is broken for Blade3D
graphics cores like the cyberblade/i1. It claims to support a great
number of devices, but documentation for most of these devices is
unfortunately not available. There is _no_ reason to use tridentfb
for cyberblade/i1 + CRT users. VESAFB is faster, and the one
advantage, mode switching, is broken in tridentfb.
- VESAFB is used by many distributions as a standard. Vesafb does
not support mode switching. VESAFB is a bit faster than the working
configurations of TRIDENTFB, but it is still too slow, even if you
use ypan.
- EPIAFB (you'll find it on sourceforge) supports the Cyberblade/i1
graphics core, but it still has serious bugs and developement seems
to have stopped. This is the one driver with TV-out support. If you
do need this feature, try epiafb.
None of these drivers was a real option for me.
I believe that is unreasonable to change code that announces to support 20
devices if I only have more or less sufficient documentation for exactly one
of these. The risk of breaking device foo while fixing device bar is too high.
So I decided to start CyBlaFB as a stripped down tridentfb.
All code specific to other Trident chips has been removed. After that there
were a lot of cosmetic changes to increase the readability of the code. All
register names were changed to those mnemonics used in the datasheet. Function
and macro names were changed if they hindered easy understanding of the code.
After that I debugged the code and implemented some new features. I'll try to
give a little summary of the main changes:
- calculation of vertical and horizontal timings was fixed
- video signal quality has been improved dramatically
- acceleration:
- fillrect and copyarea were fixed and reenabled
- color expanding imageblit was newly implemented, color
imageblit (only used to draw the penguine) still uses the
generic code.
- init of the acceleration engine was improved and moved to a
place where it really works ...
- sync function has a timeout now and tries to reset and
reinit the accel engine if necessary
- fewer slow copyarea calls when doing ypan scrolling by using
undocumented bit d21 of screen start address stored in
CR2B[5]. BIOS does use it also, so this should be safe.
- cyblafb rejects any attempt to set modes that would cause vclk
values above reasonable 230 MHz. 32bit modes use a clock
multiplicator of 2, so fbset does show the correct values for
pixclock but not for vclk in this case. The fbset limit is 115 MHz
for 32 bpp modes.
- cyblafb rejects modes known to be broken or unimplemented (all
interlaced modes, all doublescan modes for now)
- cyblafb now works independant of the video mode in effect at startup
time (tridentfb does not init all needed registers to reasonable
values)
- switching between video modes does work reliably now
- the first video mode now is the one selected on startup using the
vga=???? mechanism or any of
- 640x480, 800x600, 1024x768, 1280x1024
- 8, 16, 24 or 32 bpp
- refresh between 50 Hz and 85 Hz, 1 Hz steps (1280x1024-32
is limited to 63Hz)
- pci retry and pci burst mode are settable (try to disable if you
experience latency problems)
- built as a module cyblafb might be unloaded and reloaded using
the vfb module and con2vt or might be used together with vesafb

28
drivers/video/Kconfig
View file

@ -1597,30 +1597,6 @@ config FB_VT8623
Driver for CastleRock integrated graphics core in the
VIA VT8623 [Apollo CLE266] chipset.
config FB_CYBLA
tristate "Cyberblade/i1 support"
depends on FB && PCI && X86_32 && !64BIT
select FB_CFB_IMAGEBLIT
---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
@ -1633,8 +1609,8 @@ config FB_TRIDENT
and Blade XP.
There are also integrated versions of these chips called CyberXXXX,
CyberImage or CyberBlade. These chips are mostly found in laptops
but also on some motherboards. For more information, read
<file:Documentation/fb/tridentfb.txt>
but also on some motherboards including early VIA EPIA motherboards.
For more information, read <file:Documentation/fb/tridentfb.txt>
Say Y if you have such a graphics board.

1683
drivers/video/cyblafb.c
View file

File diff suppressed because it is too large Load diff

6
drivers/video/tridentfb.c
View file

@ -2,7 +2,7 @@
* Frame buffer driver for Trident TGUI, Blade and Image series
*
* Copyright 2001, 2002 - Jani Monoses <jani@iv.ro>
*
* Copyright 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
*
* CREDITS:(in order of appearance)
* skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
@ -1490,6 +1490,9 @@ static int __devinit trident_pci_probe(struct pci_dev *dev,
} else
info->flags |= FBINFO_HWACCEL_DISABLED;
if (is_blade(chip_id) && chip_id != BLADE3D)
info->flags |= FBINFO_READS_FAST;
info->pixmap.addr = kmalloc(4096, GFP_KERNEL);
if (!info->pixmap.addr) {
err = -ENOMEM;
@ -1664,4 +1667,5 @@ module_exit(tridentfb_exit);
MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
MODULE_LICENSE("GPL");
MODULE_ALIAS("cyblafb");