Intel_extreme: improve i855 support.

https://github.com/druga/haiku-stuff/tree/master/intel_extreme
Rebased against current sources.

* The BIOS video mode sometimes reports a scaled mode instead of the
physical panel dimensions. Get the data from the VBT table as well, and
use it if the reported resolution is bigger.
* On first boot, force the panel native mode so the user doesn't have to
set it manually.
* Only allow a single head at a time on i855gm, as the card can't drive
both heads at the same time.
* Detect when a new requested mode is the same as the current one, and
skip modesetting in that case. Avoids screen flickering when changing
workspaces.
* Fix some cases of misdetecting which pipes to enable

This commit is contained in:

Adrien Destugues

2014-01-17 12:42:20 +01:00

parent 9e9ccf69c0

commit ef726c687a

5 changed files with 399 additions and 31 deletions

									
										headers/private/graphics/intel_extreme/intel_extreme.h
									
		+3
		
												View File
												
				@@ -173,6 +173,9 @@ struct intel_shared_info {

					addr_t			frame_buffer;

					uint32			frame_buffer_offset;

					bool			got_vbt;

					bool			single_head_locked;

					struct lock		accelerant_lock;

					struct lock		engine_lock;