Bug 7328

Summary: Add dualhead support to siliconmotion for lynx chips
Product: xorg Reporter: Alex Deucher <alexdeucher>
Component: Driver/siliconmotionAssignee: Alex Deucher <alexdeucher>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: enhancement    
Priority: high Keywords: patch
Version: git   
Hardware: x86 (IA32)   
OS: Linux (All)   
URL: http://www.botchco.com/alex/xorg/smi-dualhead.diff
Whiteboard:
i915 platform: i915 features:

Description Alex Deucher 2006-06-25 15:49:38 UTC 
This patch adds dualhead support for lynx chips to the siliconmotion driver. 
It's semi-nonstandard due to the strange and limited nature of the lynx
architecture.  To enable dualhead add the following option to the device section
of your xorg.conf:
Option "Dualhead" "TRUE"

Limitations of the architecture:
- dualhead modes are limited to the same size and timing on both crtcs
- mode must be the same size as the panel
- LCD crtc is fixed at offset 0
- both crtc buffers must be within the range of the drawing engine
- drawing engine pitch must be wide enough for both crtcs
Comment 1 Daniel Stone 2007-02-27 01:32:40 UTC 
Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Comment 2 Alex Deucher 2007-02-27 11:06:39 UTC 
committed to cvs a while ago.

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