platform_hardware_libhardware

History

Jean-Baptiste Queru 118b5d7961 Allow disabling page-flipping. Some devices have low-level bugs in their page-flip. Disabling it at this level gives us more flexibility than trying to control it elsewhere. Bug: 3097357 Change-Id: Icc6ae172264e453bec0680e74a497a2b24299c4a		2010-10-14 19:05:09 -07:00
..
gralloc	Allow disabling page-flipping.	2010-10-14 19:05:09 -07:00
overlay	fix typo in default overlay hal	2010-08-06 17:50:56 -07:00
README.android	auto import from //depot/cupcake/@135843	2009-03-03 19:32:14 -08:00

README.android

Default (and possibly architecture dependents) HAL modules go here. 


libhardware.so eventually should contain *just* the HAL hub
(hardware.c), everything in it should be rewritten as modules.

Modules are .so in /system/libs/hw/ and have a well defined naming
convention:

    /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.product.board>.so
    /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.board.platform>.so
    /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.arch>.so
    /system/libs/hw/<*_HARDWARE_MODULE_ID>.default.so

They also have a well defined interface which lives in include/hardware/.

A module can have several variants: "default", "arch" and "board", and they're
loaded in the "board", "arch" and "default" order.
The source code for the "board" variant, usually lives under partners/...

The source code for "default" and "arch" would usually
live under hardware/modules/.