siliconmotion - Silicon Motion video driver
Section "Device"
 Identifier "devname"
 Driver "siliconmotion"
  ...
  [ Option "optionname"
  ["optionvalue"]]
EndSection
siliconmotion is an Xorg driver for Silicon Motion based video cards. The
  driver is fully accelerated, and provides support for the following
  framebuffer depths: 8, 16, and 24. All visual types are supported for depth 8,
  and TrueColor visuals are supported for the other depths.
The siliconmotion driver supports PCI and AGP video cards based on the
  following Silicon Motion chips:
  - Lynx
- SM910
- LynxE
- SM810
- Lynx3D
- SM820
- LynxEM
- SM710
- LynxEM+
- SM712
- Lynx3DM
- SM720
- Cougar3DR
- SM731
- MSOC
- SM501,SM502
Please refer to xorg.conf(5) for general configuration details. This section
  only covers configuration details specific to this driver. All options names
  are case and white space insensitive when parsed by the server, for example,
  "lynxe" and "LynxE" are equivalent.Multihead mode configuration is done through the RandR1.2
    interface (see xorg.conf(5) and xrandr(1) for further information). Hardware
    accelerated screen rotation and framebuffer resizing are only supported with
    the EXA acceleration architecture (see the AccelMethod option
    below).
The driver auto-detects the chipset type, but the following
    ChipSet names may optionally be specified in the config file
    "Device" section, and will override the auto-detection:
"lynx", "lynxe", "lynx3d",
  "lynxem", "lynxem+", "lynx3dm",
  "cougar3dr", "msoc".
The following Cursor Options are supported:
  - Option "HWCursor" "boolean"
- Enable or disable the HW cursor. Default: on.
- Option "SWCursor" "boolean"
- Inverse of "HWCursor". Default: off.
    
  
The following display Options are supported:
  - Option "VideoKey" "integer"
- Set the video color key. Default: a little off full blue.
- Option "ByteSwap" "boolean"
- Turn on byte swapping for capturing using SMI demo board. Default:
    off.
- Option "Interlaced"
    "boolean"
- Turn on interlaced video capturing. Default: off.
- Option "UseBIOS" "boolean"
- Use the BIOS to set the modes. This is used for custom panel timings.
      Default: off for SM72x and SM5xx, otherwise on.
- Option "Dualhead" "boolean"
- Enable dualhead mode. Currently not all chips are supported and hardware
      video overlay (XV) support may have some limitations. Default: off.
- Option "PanelSize"
    "widthxheight"
- Override LCD panel dimension autodetection.
- Option "UseFBDev" "boolean"
- Don't actually program the hardware mode registers, but leave it as set by
      the operating system. Only available on MSOC chips. Default: off.
- Option "CSCVideo" "boolean"
- CSC video uses color space conversion to render video directly to the
      framebuffer, without using an overlay. Only available on MSOC chips.
      Default: on.
The following video memory Options are supported:
  - Option "mclk" "integer"
- Sets the memory clock. You must specify the units. For example
      50Mhz is the same as 50000Khz or 50000000Hz. On MSOC
      chips this is the main clock source for all functional blocks, such as the
      2D engine, GPIO, Video Engine, and DMA Engine. This option is only used
      for debugging purposes on MSOC chips. Default: probe the memory clock
      value, and use it at server start.
- Option "mxclk" "integer"
- Sets the memory clock. You must specify the units. For example
      50Mhz is the same as 50000Khz or 50000000Hz. Clock
      source for the local SDRAM controller. This option is only available on
      MSOC chips and used only for debugging purposes. Default: probe the memory
      clock value, and use it at server start.
The following acceleration and graphics engine Options are
    supported:
  - Option "NoAccel"
- Disable acceleration. Very useful for determining if the driver has
      problems with drawing and acceleration routines. This is the first option
      to try if your server runs but you see graphic corruption on the screen.
      Using it decreases performance, as it uses software emulation for drawing
      operations the video driver can accelerate with hardware. Default:
      acceleration is enabled.
- Option "AccelMethod"
    "string"
- Chooses between available acceleration architectures. Valid options are
      XAA and EXA. XAA is the traditional acceleration
      architecture and support for it is very stable. EXA is a newer
      acceleration architecture with better performance for the Render and
      Composite extensions, but the rendering code for it is newer and possibly
      unstable. The default is XAA.
    
  
The following PCI bus Options are supported:
  - Option "PciBurst" "boolean"
- will enable PCI burst mode. This should work on all but a few broken PCI
      chipsets, and will increase performance. Default: on.
- Option "PciRetry" "boolean"
- will allow the driver to rely on PCI Retry to program the registers.
      PciBurst must be enabled for this to work. This will increase
      performance, especially for small fills/blits, because the driver does not
      have to poll the card before sending it commands to make sure it is ready.
      It should work on most recent PCI chipsets. Default: value of
      PciBurst option.
    
  
Xorg(1), xorg.conf(5), Xserver(1), X(7)
For assistance with this driver, or Xorg in general, check the web site at
  http://www.x.org/. If you find a problem with Xorg or have a question not
  answered in the FAQ please use our bug report form available on the web site
  or send mail to xorg@lists.freedesktop.org. When reporting problems with the
  driver send as much detail as possible, including chipset type, a server
  output log, and operating system specifics.
Kevin Brosius, Matt Grossman, Harald Koenig, Sebastien Marineau, Mark Vojkovich,
  Frido Garritsen, Corvin Zahn.