On Fri, Mar 22, 2019 at 01:17:57PM +0800, Yifeng Li wrote:
This commits add information about 32-bit color, 2D acceleration, as well as adding additional, general information about the hardware and many existing problems of the sm712fb driver.
Signed-off-by: Yifeng Li tomli@tomli.me
Documentation/fb/sm712fb.txt | 123 +++++++++++++++++++++++++++++++---- 1 file changed, 110 insertions(+), 13 deletions(-)
diff --git a/Documentation/fb/sm712fb.txt b/Documentation/fb/sm712fb.txt index c388442edf51..906b48aa40e4 100644 --- a/Documentation/fb/sm712fb.txt +++ b/Documentation/fb/sm712fb.txt @@ -1,31 +1,128 @@ What is sm712fb? =================
-This is a graphics framebuffer driver for Silicon Motion SM712 based processors. +"sm712fb" is a graphics framebuffer driver for Silicon Motion SM710 (LynxEM), +SM712 (LynxEM+), and SM720 (Lynx3DM, Lynx3DM+, aka. LynxEM4+) series of +video controllers. This series of video controller is a legacy from ~1998, +and was used on many classic, "prehistoric" laptops from 1998-2004, such as +IBM Thinkpad S30 and 240X. It was also used on some servers, industrial +computers, x86 and non-x86 embedded devices where only basic graphics was +needed.
I think this is wrong. Loongson 3A Notebook was released around 2011-2012 and had SM712.
+Notably, Lemote YeeLoong 8089, a MIPS laptop based on the Chinese Loongson
<snip>
- More VGA modes.
- dual-head support
- hardware cursor support
+The first feature is planned to be implemented soon, but the maintainer +does not receive any monetary or hardware support from any company or OEMs, +and he has to purchase a test platform personally. The 1998's hardware +still costs 200 USD+, so don't expected an ETA. If you have a Big-Endian +platform and willing to help testing, please contact the maintainer, thanks!
I am not sure why will you want to mention about monetary or hardware support. Maintainers are supposed to work voluntarily.
+Other VGA modes, dual-head, or hardware cursor support should be possible to +implement, but parts of the code must be rewritten, and there's little demand +for them on this legacy (retro?) platform, so there's no plan to implement them. +If you have a genuine need for them, please contact the maintainers.
If there is any need for new features then I think the plan should be to make a drm driver.
+Maintainers +================
+This driver is maintained by
- Tom Li tomli@tomli.me
?? I didn't know this. MAINTAINERS file doesnot say so.
- Sudip Mukherjee sudipm.mukherjee@gmail.com
- Teddy Wang teddy.wang@siliconmotion.com
+Tom Li was the last contributor of this driver who implemented 2D acceleration, +and is the main author of this documentation, please send any bug reports or +requests to Tom, but don't forget to CC other maintainers as well to make everyone +be informed.
There is a MAINTAINERS file to list the maintainers. There is no need to add that in documentation.
-- Regards Sudip