Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r227293 (by ed):
Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

This means that their use is restricted to a single C file.

MFC 241748:
When checking to see if a video output's _ADR matches an entry in the
parent adapter's _DOD list, only check the low 16 bits of both _ADR and
_DOD. The language in the ACPI spec seems to indicate that the _ADR values
should exactly match the entries in _DOD. However, I assume that the
masking added to _DOD values was added to work around some known busted
machines (the commit history doesn't indicate either way), and the ACPI
spec does require that the low 16 bits are unique for all video outputs,
so only checking the low 16 bits should be fine.

This fixes recognition of video outputs that use the new standardized
device ID scheme in ACPI 3.0 that set bit 31 such as certain Dell laptops.

MFC r237197:

- Resotre LCD brightness level on resuming.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Fix a few more SYSCTL_PROC() that were missing a CTLFLAG type specifier.

Simplify a function for getting brightness levels.

Remove unused assignment.

Found by: clang static analyzer
Found by: Coverity Prevent[tm] (CID 4537, 4538, 4539)

Fix white spaces.

Rename some macros to clarify their intentions and fix style nits.

Add support for `cycle' and `zero' events for LCD brightness control.

Submitted by: Daniel Walter (d dot walter at 0x90 dot at) (intial version)

Make sanity check slightly more useful and tweak an error message.

Implement LCD brightness control notify handler.

Submitted by: Daniel Walter(d dot walter at 0x90 dot at) (intial version)

Merge ACPICA 20091112.

Split the 'video' ACPI lock up into two locks to resolve a LOR with the
sysctl lock. The 'video' lock now protects the 'bus' of video output
devices attached to a graphics adapter. It is used when iterating over
the list of outputs, etc. The 'video_output' lock is used to lock the
output-specific data similar to a driver lock for the individual video
outputs.

MFC after: 2 weeks

Uninline an instance of STAILQ_FOREACH_SAFE().

Import ACPICA 20090521.

Improve the way we'll detect video devices as per ACPI 3.0.

PR: 100271
Requested by: john AT utzweb DOT net
Submitted by: hrs
Reviewed by: njl
Approved by: njl
MFC after: 3 days

Attach to the vgapci device rather than pci.

Canonize the include of acpi.h.

Fix SCM ID's.

Tell the BIOS we want to handle brightness switching as well as output
switching. Don't initialize variables in their declaration. Reduce stack
usage for device names. Minor style cleanups.

MFC after: 1 week

MPSAFE locking

* Serialize operations in acpi_video_bind_outputs(), acpi_video_detach(),
acpi_video_notify_handler(), acpi_video_power_profile(), and the sysctls.
The main goal is to protect the shared device list and prevent conflicting
settings.
* Add assertions that the sx lock is held in the leaf functions.

Fix a bug where an item was being removed from a list without using
FOREACH_SAFE. Remove bad cast of retp and instead use an additional
arg to pass back the number of valid outputs. Use the package convenience
functions for parsing packages.

Remove unused (and bogus) locking, style cleanup, remove unnecessary casts.

Fix acpi_video loading. When we started cleaning up the duplicate handles
left around after the PCI probe, acpi_video stopped attaching because while
it was an acpi child device, it really is a PCI device. Fix this by making
it a PCI child.

* Remove non-handle ivars accesses since child busses only implement
acpi_get_handle().
* Access the acpi softc directly through the devclass instead of through
the implied parent.
* Clean up a potential panic on unload by freeing the sysctl context before
storing NULL in the OID.

Found by: marks

Add missing <sys/module.h> includes

Unify on version 1 to be similar to the rest of the tree. After 5-stable
branches, increment version on any API change visible to other modules.

Change to acpi_{Get,Set}Integer to provide both methods. Convert all
callers to the new API.

Submitted by: Mark Santcroos <marks@ripe.net>

Add the ACPI standard video extensions driver. I've done some style cleanup
but a bit more reamins to be done. For now, it is usable.

Submitted by: Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>