Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

MFC r261681, r261682, r261683, r261684, r261685, r261686, r261687, r261688,
r261689, r261690, r261783, r261791, r261836, r261837, r261841,

Add FDT matching code to AT91 device drivers.

Better nomatch messages: include compat string. Also, flag devices as
disabled in the successful probe message, but leave what that means to
the actual driver (no semantic changes).

Fix Embest board name and id.

Honor the disabled status by only grabbing resources and returning
when running under FDT in the AT91 SPI driver.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Fix regression issue after r248910.

PR: arm/177685
Submitted by: Christoph Mallon <christoph.mallon@gmx.de>

Add userland access to at91 gpio functionality via ioctl calls. Also,
add the ability for userland to be notified of changes on gpio pins via
a select(2)/read(2) interface.

Change the interrupt handler from filtered to threaded.

Because of the uiomove() calls in the new interface, change locking from
standard mutex to sx.

Add / restore the at91_gpio_high_z() function.

Reviewed by: imp (long ago)

Change the API for at91_pio_gpio_get() to return the entire masked set
of bits, not just a 0/1 indicating whether any of the masked bits are on.
This is compatible with the single in-tree caller of this function right now
(at91_vbus_poll() in dev/usb/controller/at91dci_atemelarm.c).

Throw this debug behind bootverbose. The information isn't all that
exciting once the initial board bring up is over.

- Try to bring these files closer to style(9).
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

Remove pointless semicolons after label

if_ate.c:

* Support for sam9 "EMAC" controller.
* Support for rmii interface to phy.

at91.c & at91sam9.c:

* Eliminate separate at91sam9.c file.
* Add new devices to at91sam9_devs table.

at91_machdep.c & at at91sam9_machdep.c:

* Automatic chip type determination.
* Remove compile time chip dependencies.
* Eliminate separate at91sam9_machdep.c file.

at91_pmc.c:

* Corrected support for all of the sam926? and sam9g20 chips.
* Remove compile time chip dependencies.

My apologies to Greg for taking so long to take care of it.

Tweak the disclaimer section of the license to match COPYRIGHT, for
better or worse. Ok'd by folks that have additional copyrights to the
files in cases where there's joint authorship.

Provide hooks into the GPIO lines and the ability to set/clear
interrupts from them. This should be more generalized, but is
sufficient for now.

Submitted by: Hans Petter Selasky

o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@

MFp4:
formatting nit

MFp4:
Introduce framework to configure the multiplexed pins on boot.

Since the USART supprots RS-485 multidrop mode, it allows the
TX pins to float. However, for RS-232 operations, we don't
want these pins to float. Instead, they should be pulled up
to avoid mismatches. Linux does something similar when it
configures the TX lines. This implies that we also allow the
RX lines to float rather than be in the state they are left in
by the boot loader. Since they are input pins, I think that
this is the right thing to do.

Plus minor for our board.

Add support for configuring pins to be one of {GPIO, PERIPHERAL A or
PERIPHERAL B}, as well as direction of GPIO pin. Add defines for all
the pins.

Skeleton PIO support.