mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-16 01:04:08 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
Tridentfb is a framebuffer driver for some Trident chip based cards.
|
|
|
|
The following list of chips is thought to be supported although not all are
|
|
tested:
|
|
|
|
those from the Image series with Cyber in their names - accelerated
|
|
those with Blade in their names (Blade3D,CyberBlade...) - accelerated
|
|
the newer CyberBladeXP family - nonaccelerated
|
|
|
|
Only PCI/AGP based cards are supported, none of the older Tridents.
|
|
|
|
How to use it?
|
|
==============
|
|
|
|
When booting you can pass the video parameter.
|
|
video=tridentfb
|
|
|
|
The parameters for tridentfb are concatenated with a ':' as in this example.
|
|
|
|
video=tridentfb:800x600,bpp=16,noaccel
|
|
|
|
The second level parameters that tridentfb understands are:
|
|
|
|
noaccel - turns off acceleration (when it doesn't work for your card)
|
|
accel - force text acceleration (for boards which by default are noacceled)
|
|
|
|
fp - use flat panel related stuff
|
|
crt - assume monitor is present instead of fp
|
|
|
|
center - for flat panels and resolutions smaller than native size center the
|
|
image, otherwise use
|
|
stretch
|
|
|
|
memsize - integer value in Kb, use if your card's memory size is misdetected.
|
|
look at the driver output to see what it says when initializing.
|
|
memdiff - integer value in Kb,should be nonzero if your card reports
|
|
more memory than it actually has.For instance mine is 192K less than
|
|
detection says in all three BIOS selectable situations 2M, 4M, 8M.
|
|
Only use if your video memory is taken from main memory hence of
|
|
configurable size.Otherwise use memsize.
|
|
If in some modes which barely fit the memory you see garbage at the bottom
|
|
this might help by not letting change to that mode anymore.
|
|
|
|
nativex - the width in pixels of the flat panel.If you know it (usually 1024
|
|
800 or 1280) and it is not what the driver seems to detect use it.
|
|
|
|
bpp - bits per pixel (8,16 or 32)
|
|
mode - a mode name like 800x600 (as described in Documentation/fb/modedb.txt)
|
|
|
|
Using insane values for the above parameters will probably result in driver
|
|
misbehaviour so take care(for instance memsize=12345678 or memdiff=23784 or
|
|
nativex=93)
|
|
|
|
Contact: jani@astechnix.ro
|