INTRNG - use gpio interrupt modes definitions added in r298738 and
implement also GPIO_INTR_EDGE_BOTH mode. All reasonable interrupt
modes are supported now.

INTRNG - redefine struct intr_map_data to avoid headers pollution. Each
struct associated with some type defined in enum intr_map_data_type
must have struct intr_map_data on the top of its own defini

INTRNG - redefine struct intr_map_data to avoid headers pollution. Each
struct associated with some type defined in enum intr_map_data_type
must have struct intr_map_data on the top of its own definition now.
When such structs are used, correct type and size must be filled in.

There are three such structs defined in sys/intr.h now. Their
definitions should be moved to corresponding headers by follow-up
commits.

While this change was propagated to all INTRNG like PICs,
pic_map_intr() method implementations were corrected on some places.
For this specific method, it's ensured by a caller that the 'data'
argument passed to this method is never NULL. Also, the return error
values were standardized there.

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MFH

Sponsored by: The FreeBSD Foundation

Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine
independent code that needs to know about INTRNG such as PCI drivers.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBS

Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine
independent code that needs to know about INTRNG such as PCI drivers.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation

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MFH

Sponsored by: The FreeBSD Foundation

Rework BCM283x gpio interrupt controller for INTRNG. It's used on RPI-B
and RPI2 where INTRNG is already enabled by default.

Differential Revision: https://reviews.freebsd.org/D5810

Merge sync of head

Merge from head

Merge r278538 through r279514.

Merging ^/head r278916 through r279022.

MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Make use of the newly introduced macros.

Update the copyright.

MFH: r278202,r278205-r278590

Sponsored by: The FreeBSD Foundation

Merge from HEAD

Merge ^/head r278110 through r278223.

Add GPIO interrupt support for BCM2835 (Raspberry pi).

With this commit any of the GPIO pins can now be programmed to act as an
interrupt source for GPIO devices (i.e. limited to devices directly
at

Add GPIO interrupt support for BCM2835 (Raspberry pi).

With this commit any of the GPIO pins can now be programmed to act as an
interrupt source for GPIO devices (i.e. limited to devices directly
attached to gpiobus - at least for now).

Differential Revision: https://reviews.freebsd.org/D1000

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Sort and remove unnecessary includes.

Merge ^/head r277975 through r277998.

Implement GPIO_GET_BUS() method for all GPIO drivers.

Add helper routines to deal with attach and detach of gpiobus and gpioc
devices that are common to all drivers.

Merge ^/head r277902 through r277944.

The BCM2835 GPIO controller uses has interrupt lines and not only one.
Allocate all four, we will use them soon.

Simplificate the allocation of memory and interrupt resources with a single
bus_alloc

The BCM2835 GPIO controller uses has interrupt lines and not only one.
Allocate all four, we will use them soon.

Simplificate the allocation of memory and interrupt resources with a single
bus_alloc_resources() call instead of doing them separately.

Destroy the mutex in case of errors.

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Allow the retrieving of the reserved pins state.

With this change, it is now possible to verify the pin function and level
of reserved pins (but not set them).

The use of reserved pins on Raspberry

Allow the retrieving of the reserved pins state.

With this change, it is now possible to verify the pin function and level
of reserved pins (but not set them).

The use of reserved pins on Raspberry pi can lead to short circuits and
real damage to the SoC.

While here, remove duplicated code, make use of OF_getencprop_alloc()
instead of using fixed sized variables and reduce the dmesg spam by
printing reserved pin ranges (when possible) instead of printing each pin
in the range.

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Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Sync to HEAD@r274766