MFC r335594:

Retrieve the bus clock speed and mode (polarity/phase) from the child device
and set up the hardware accordingly on each transfer. This replaces the old
configuration done via sysctl, and allows both fdt configuration data and
userland control via the spigen device to work.

Submitted by: Bob Frazier
Differential Revision: https://reviews.freebsd.org/D15031

Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

MFC r310017, r310229, r312289, r327260, r329539, r329544-r329546, r329620,
r329729, r329911, r329999

r310017:
[spi] reformat message

This commit corrects print of nomatch (newline was too early)

Submitted by: Hiroki Mori <yamori813@yahoo.co.jp>
Reviewed by: ray, loos, mizhka
Differential Revision: https://reviews.freebsd.org/D8749

r310229:
ofw_spi: Parse property for the SPI mode and CS polarity.
As cs is stored in a uint32_t, use the last bit to store the
active high flag as it's unlikely that we will have that much CS.

Reviewed by: loos
Differential Revision: https://reviews.freebsd.org/D8614

r312289:
[spibus] small code refactoring

Merge 3 sequential printf calls into one.

Reported by: rpokala
Reviewed by: rpokala, adrian
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D8795

r327260:
SPDX: fix wrong license ID tag in dev/spibus.

r329539:
Provide public declarations for ofw_spibus_driver and ofw_spibus_devclass
so other drivers can refer to them in DRIVER_MODULE() decls.

r329544:
Add modules/spi as a gathering point for SPI-related modules, analagous to
modules/i2c for i2c/iicbus modules. Build spibus as a module.

r329545:
Add ofw_bus_if.h to SRCS.

r329546:
Build at45d and mx25l SPI flash drivers as modules.

r329620:
Add missing MODULE_DEPENDS().

r329729:
Remove some files that snuck in via cut and paste.

Having these compiled into the module causes the kobj method descriptors
to be resolved incorrectly (by the compile-time linker instead of the
kernel linker), which then leads to hours of frustrating debugging.

r329911:
Add a functional detach() routine, to make things kldunload-friendly.

r329999:
Add a SPI driver for imx5 and imx6.

It can be compiled into the kernel with "device imx_spi" or loaded as a
module, which is also named "imx_spi".

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

MFC r309912:

CS ivar is uint32_t, not int.

MFC r306902:

ARM: Remove unused includes.

MFC r307067, r307068, r307087, r307088, r307089,
r307091, r307092, r307093, r307095, r307098,
r307115:

r307067:
Make intc driver compatible with upstream DTS

- Fix compatibility strings
- Properly decode upstream's two-cell interrupt specs. Our home-made dts
does not have two-cell interrupts so no need to preserve backward
compatibility

r307068:
Make Rapsberry Pi watchdog driver compatible with upstream DTS

- Fix compatibility strings
- Compensate the difference in base address for our custom DTS and
upstream one (for backward compatibility)

r307087:
Make sure intc is attached before interrupt consumers

If pass order is not specified devices are attached in the order they are
defined in dts. Some interrupt consumers may be defined before intc. Also
make sure intc interrupt-parent local_intc is attached before intc itself.

r307088:
Add compatible strings used in upstream dts files

r307089:
Make framebuffer driver compatible with upstream DT

- Add compatibility string
- Add simplebus as possible parent bus

r307091:
Add compatibility string from upstream DT

r307092:
Make BCM2835 GPIO driver compatible with upstream DT

- Add compatibility string
- Make reserverd and read-only properties optional

r307093:
Make BCM283x USB driver compatible with upstream DT

- Make resource allocation logic depend on compatibility string
to check what format of DTS node should be used - FreeBSD's or upstream

r307095:
Make VCHI driver compatible with upstream DT

- Add compatibility string
- Compensate difference in base address between our custom DTB and upstream one

r307098:
Make BCM28x USB driver compatible with upstream device tree

This should have been committed in r307093: resource allocation depends
on source of the device tree. upstream dts has extra interrupt that we can
ignore

r307115:
Fix typo in comment

Spotted by: loos

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

Add a missing wakeup when releasing ownership of the SPI hardware.

Also, validate the chipselect parameter before grabbing ownership of the
hardware, and report timeout errors after releasing it.

PR: 200584

Stop using machine/fdt.h in the arm kernel code when we don't need it.

Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352. Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.

Remove #include <machine/frame.h> from all the arm code that doesn't
really need it. That would be almost everywhere it was included. Add
it in a couple files that really do need it and were previously getting
it by accident via another header.

Add the Raspberry Pi SPI controller driver.

Reviewed by: rpaulo
Approved by: adrian (mentor)