mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-04 23:47:46 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
64
Documentation/fb/vt8623fb.txt
Normal file
64
Documentation/fb/vt8623fb.txt
Normal file
|
@ -0,0 +1,64 @@
|
|||
|
||||
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>
|
Loading…
Add table
Add a link
Reference in a new issue