diff options
Diffstat (limited to 'Documentation/fb/vt8623fb.txt')
| -rw-r--r-- | Documentation/fb/vt8623fb.txt | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/Documentation/fb/vt8623fb.txt b/Documentation/fb/vt8623fb.txt deleted file mode 100644 index f654576c56b7..000000000000 --- a/Documentation/fb/vt8623fb.txt +++ /dev/null @@ -1,64 +0,0 @@ - - vt8623fb - fbdev driver for graphics core in VIA VT8623 chipset - =============================================================== - - -Supported Hardware -================== - - VIA VT8623 [CLE266] chipset and its graphics core - (known as CastleRock or Unichrome) - -I tested vt8623fb on VIA EPIA ML-6000 - - -Supported Features -================== - - * 4 bpp pseudocolor modes (with 18bit palette, two variants) - * 8 bpp pseudocolor mode (with 18bit palette) - * 16 bpp truecolor mode (RGB 565) - * 32 bpp truecolor mode (RGB 888) - * text mode (activated by bpp = 0) - * doublescan mode variant (not available in text mode) - * panning in both directions - * suspend/resume support - * DPMS support - -Text mode is supported even in higher resolutions, but there is limitation to -lower pixclocks (maximum about 100 MHz). This limitation is not enforced by -driver. Text mode supports 8bit wide fonts only (hardware limitation) and -16bit tall fonts (driver limitation). - -There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with -packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode -with interleaved planes (1 byte interleave), MSB first. Both modes support -8bit wide fonts only (driver limitation). - -Suspend/resume works on systems that initialize video card during resume and -if device is active (for example used by fbcon). - - -Missing Features -================ -(alias TODO list) - - * secondary (not initialized by BIOS) device support - * MMIO support - * interlaced mode variant - * support for fontwidths != 8 in 4 bpp modes - * support for fontheight != 16 in text mode - * hardware cursor - * video overlay support - * vsync synchronization - * acceleration support (8514-like 2D, busmaster transfers) - - -Known bugs -========== - - * cursor disable in text mode doesn't work - - --- -Ondrej Zajicek <santiago@crfreenet.org> |