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devg-smi7xx.so
Graphics driver for Silicon Motion Lynx chipset
Syntax:
io-graphics -d smi7xx [option[,option...]]
... &
Runs on:
ARM (XScale), MIPS, PowerPC, x86, SH4
Options:
For the general io-graphics options that can be used with this driver, see io-graphics.
Options specific to this driver:
- mode_opts=config-file
- Specifies the full path to smi7xx.conf, which is the configuration file for this driver. See smi7xx.conf for a list of parameters that can be configured.
Description:
The devg-smi7xx.so driver provides accelerated 2D support for the specified graphics chipset.
You can edit the smi7xx.conf configuration file to enable devg-smi7xx.so to run on your board. Follow the editing instructions in this file to specify the correct configuration for the required display mode. (For a more detailed explanation of the display settings, see the appropriate Silicon Motion documentation.)
You must specify the location of the configuration file to the devg-smi7xx.so driver via the mode_opts option of io-graphics, like this example:
io-graphics -d smi7xx xres=640,yres=480,bitpp=16,photon, mode_opts=/etc/config/smi7xx.conf -pphoton
Supported chipsets
- LynxEM+ (SM712)
- Lynx3DM+ (SM722)
- Cougar (SM731)
Acceleration features
| Feature | Provision |
|---|---|
| Solid fills | Yes |
| Pattern fills | No |
| Onscreen blitting | Yes |
| Offscreen blitting | Yes |
| Chroma-keyed blitting | Yes |
| Alpha blending | No |
| Raster OP's | Full |
Video Overlay/Scaler support
| Feature | Provision |
|---|---|
| YUV formats | Yes |
| RGB formats | Yes |
| Up scaling | Yes |
| Down scaling | No |
Other features
| Feature | Provision |
|---|---|
| Hardware Cursor | Yes |
| TV Out | No |
| Video capture | Yes |
| DPMS (power saving) | Yes |
| Layer Support | 3 layers |
Resolution and refresh support
| Display sixe (pixels) | Refresh rate(Hz) | Color depth (bits per pixel) |
|---|---|---|
| 640x480 | 60 | 8, 15, 16, 24 |
| 800x600 | 60 | 8, 15, 16, 24 |
| 1024x768 | 60 | 8, 15, 16, 24 |
Restrictions:
- These values are typical values; they may be dependent on your BIOS (x86) and monitor. Other resolutions and refresh rates may be set up using the smi7xx.conf driver configuration file.
Files:
This driver needs the following files available at run time:
- libdisputil.so
- Graphics driver utility library.
- libffb.so
- Software rasterization library.
See also:
io-graphics, crttrap, devgt-iographics
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