MFC r336137-r336138, r336202, r336214, r336216

r336137:
Add a manpage for the imx_spi driver.

r336138:
Add pnp info to the imx_spi driver.

r336202:
Enhancements and fixes for the spigen(4) driver...

- Resources used by spigen_mmap_single() are now tracked using
devfs_set_cdevpriv() rather than in the softc.

- Since resources are now tracked per-open-fd, there is no need to try to
impose any exclusive-open logic, so flags related to that are removed.

- Flags used to track open status to prevent detach() when the device is
open are replaced with calls to device_busy()/device_unbusy(). That
extends the protection up the hierarchy so that the spibus and hardware
controller drivers also can't be detached while the device is open/in use.

- Arbitrary limits on the maximum size of a transfer are removed, along with
the sysctl variables that allowed the limits to be changed. There is just
no reason to limit the size of a spi transfer to the machine's page size.
Or to any other arbitrary value, really.

- Most of the locking is removed. It was mostly protecting access to flags
and fields in the softc that no longer exist. The locking that remains is
just to prevent concurrent calls to device_[un]busy().

- The code was calling malloc() with M_WAITOK while holding a mutex in
several places. Since most of the locking is gone, that's fixed.

r336214:
Add various spi devices to NOTES.

r336216:
Actually build and install the spigen.4 manpage.

MFC r336094, r336096

r336094:
Catch up with improvements in RTC handling... It's no longer necessary to
ignore the timestamp passed in to settime() due to inaccuracy, the core
routines now pass in a nanosecond-accurate time freshly-obtained before
calling each driver's settime() method. Also, add calls to the new
debugging output helpers.

r336096:
Make the imx6_snvs driver usable as a module, add pnp info. Add a manpage.

MFC r336079:

Add pnp info to imx6_ahci, and add a module makefile, and a manpage for it.

MFC r336070, r336072-r336073, r336076

r336070:
Add pnp info and a module makefile for the imx_wdog watchdog driver.

r336072:
Correctly calculate the value to put in the imx wdog countdown register.

The correct value is seconds*2-1. The code was using just seconds*2, which
led to being off by a half-second -- usually not a big deal, except when the
value was the max (128) it overflowed so zero would get written to the
countdown register, which equates to a timeout of a half second.

r336073:
Add support to the imx watchdog for the FDT "timeout-sec" property, by
automatically initializing the watchdog using the given value. Also,
attach at BUS_PASS_TIMER to extend watchdog protection to more of the
kernel init process.

r336076:
Add a manpage for the imx5/6 watchdog driver.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Last few instances of "sentence not on new line".

MFC after: 1 month

Merge the projects/release-pkg branch to head.

This allows packaging the base system with pkg(8), including
but not limited to providing the ability to provide upstream
binary update possibilities for non-tier-1 architectures.

This merge is a requirement of the 11.0-RELEASE, and as such,
thank you to everyone that has tested the project branch.

Documentation in build(7) etc. is still somewhat sparse, but
updates to those parts will follow.

Sponsored by: The FreeBSD Foundation

META_MODE: Remove DEP_MACHINE from Makefile.depend files.

This has not been needed since r246865 in projects/bmake.

Sponsored by: EMC / Isilon Storage Division

META_MODE: Remove DEP_RELDIR from Makefile.depend files.

This has not been needed since r284171 in projects/bmake.

Sponsored by: EMC / Isilon Storage Division

Small cleanup.

- fix mandoc -Tlint warnings
- use appropriate macros
- canonize FreeBSD spelling

Add a new PPS driver for AM335x (beaglebone) timer hardware. This can be
used as a module or compiled-in.

Add META_MODE support.

Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision: D2796
Reviewed by: brooks imp

Properly mark up author name.

Misc mdoc fixes:

- Remove superfluous paragraph macros.
- Remove/fix empty or incorrect macros.
- Sort sections into conventional order.
- Terminate quoted strings properly.
- Remove EOL whitespace.

Add a man page for the cgem(4) driver.

Submitted by: Thomas Skibo <ThomasSkibo@sbcglobal.net>
Reviewed by: wkoszek@, Yonghyeon PYUN <pyunyh@gmail.com>

use .Mt to mark up email addresses consistently (final part)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

Configure the analog input 7 which, on BBB, is connected to the 3V3B rail
through a voltage divisor (R163 and R164 on page 4 of BBB schematic).

Add a note about this on ti_adc(4) man page. The ti_adc(4) man page will
first appear on 10.1-RELEASE.

MFC after: 1 week
Suggested by: Sulev-Madis Silber (ketas)
Manual page reviewed by: brueffer (D127)

Adds the ADC driver for TI AM3xxx SoC family.

The ADC has a 12bit resolution and its raw output can be read via sysctl(8)
interface.

The driver allows the setup of ADC clock, samples average and open delay
(the number of clock cycles to wait before start the conversion).

The TSC_ADC module is set in the general purpose mode (no touchscreen
support).

Tested on Beaglebone-black.

Written based on AM335x TRM.

Reviewed by: rpaulo
Approved by: adrian (mentor)
Tested by: me, Brian J. McGovern, Sulev-Madis Silber (ketas)

mdoc improvements

Polish devcfg(4) slightly: add \n after the end of every sentence.

Add Xilinx Zynq ARM/FPGA SoC support to FreeBSD/arm port.

Submitted by: Thomas Skibo <ThomasSkibo (at) sbcglobal.net>
Tested by: wkoszek (ZedBoard)
Reviewed by: wkoszek, freebsd-arm@ (no objections raised)

mdoc: drop even more redundant .Pp calls

No change in rendered output, less mandoc lint warnings.

Tool provided by: Nobuyuki Koganemaru n-kogane at syd.odn.ne.jp

Add standard MLINKs.

Provide manual page for the mge(4) device driver.

Xref altq(4).

Move npe.4 to a machine specific manpage subdirectory.