Merge thorpej-cfargs2.

branches: 1.43.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.42.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.41.54; 1.41.64;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.40.10;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

branches: 1.39.2; 1.39.4; 1.39.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.38.4;
Tidy away wsmouse_input() abstractions and update
documentation to include the W direction.

Add "name" parameter to powerhook_establish, to aid debugging. No objections
on tech-kern@

branches: 1.36.6; 1.36.8;
Clean up bogus whitespace

branches: 1.35.4; 1.35.6; 1.35.8; 1.35.14;
merge ktrace-lwp.

branches: 1.34.2;
Add use of __UNCONST() to an invocation of tpcalib_ioctl(), as that
function may both read and write it's argument. Here it is only
reading from the data argument under WSMOUSEIO_SCALIBCOORDS, so it
is actually fine, but type protection can't express this.

Refactor tpcalib and hpc* ports to make tpcalib MI, as discussed on tech-kern.

Add MobilePro 880 (MC/R730A) to stylus calibration table.
Addresses PR/23652.

suppress false alarm from gcc -Wuninitialized.

Correct a few more instances where NULL was used in an integral context.

__KERNEL_RCSID()

branches: 1.28.2;
Fixed threshold value for Vrc4173 PIU.

Added new ioctl command, WSMOUSEIO_GETID to tell touch panel identifier
for tpctl(8).

Added Vrc4173PIU. (touch panel interface unit on Vrc4173)

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.23.6;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

Attached vrpiu at vrc4173bcu.

Attached vrkiu at vrc4173bcu.

Removed __vrcmu_supply() and __vrgiu_out(), which are need to enable serial
port before auto configuration.

Boot loaders (pbsdboot and hpcboot) are responsible to enable the port because
the kernel can't enable serial port for console any more.

clean up header file.

Added vripif.

branches: 1.17.4;
add VR4181 clock control.

Renamed platid_search() to platid_search_data() and added new platid_search().
Platid_name() was re-implemented using platid_search().

ANSIfy, KNF.

branches: 1.14.2;
adhoc battery event creation for some vr machines.
XXX: temporary

branches: 1.13.2;
fix 'mask clock to PIU'

add MC-R700, 730 touch panel parameter

branches: 1.11.2;
hpc common files are moved to dev/hpc.

Fix bugs of VR touch panel driver,
- status stay in touching while pen don't realy touch.
- cursor often jumps to center of screen.
But it seems that 'stay in touching' still occurs at rare intervals.

Fix indent, which were too deep.

Implement WSMOUSEIO_SRES to control A/D port scan interval.

- rewrite codes using new CONFIG_HOOK_SET.

- polling battery voltage value from A/D port.
currently polling only.
if verbose mode, kernel print A/D raw value every polling.

branches: 1.5.4;
Add a table of calibrations. The MCR_500 one (640x240) makes the MCR_700A
(800x600) almost unusable. Now the 700A has it's own.

branches: 1.4.2;
Mouse move event should be made before mouse bown event. Without that,
you may got a mouse down event in strange plase.

WSMOUSE_SCALIBCOORDS/WSMOUSE_GCALIBCOORDS support.

Absolute pointing device support.
- Wsmouse_input() get new argument 'flag', which indicates whether x/y/z are
relative or absolute.
- Wsmouse get new io controls, WSMOUSEIO_SCALIBCOORDS and
WSMOUSEIO_GCALIBCOORDS.

VR41xx's PIU (Touch panel I/F unit) suport.
Currently it emulates relative pointing device like mouse, but it should
behave like an absolute pointing device. It needs more works in wsmouse side.