CVS log for src/sys/dev/spi/spivar.h

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Pull up following revision(s) (requested by rin in ticket #836):

	sys/dev/spi/spivar.h: revision 1.13

Define mode macros for CPOL and CPHA, and define SPI_MODE_* in terms
of CPOL and CPHA.  Add SPI_FREQ_*() helper macros to make setting the
transfer frequency less error prone.

Define mode macros for CPOL and CPHA, and define SPI_MODE_* in terms
of CPOL and CPHA.  Add SPI_FREQ_*() helper macros to make setting the
transfer frequency less error prone.

Provide a spi_compatible_lookup() function to go along with
spi_compatible_match().

Pass the device_t into spi_configure(), and make the API contract that
spi_configure() will print errors if they occur; the driver is off the
hook.

Port over the changes from thorpej-i2c-spi-conf to thorpej-i2c-spi-conf2,
which is based on a newer HEAD revision.

Define a "spi-enumerate-devices" device call and use it for direct
configuration of SPI devices, rather than slinging arrays of dictionaries
around.  Implement this device call for OpenFirmware / FDT, following
the SPI bindings for Device Tree.

Pull up following revision(s) (requested by 1043):

	sys/dev/spi/spivar.h: revision 1.10
	sys/arch/arm/broadcom/bcm2835_spi.c: revision 1.7
	sys/dev/spi/spi.c: revision 1.15

Use mutex for lwp/interrupt coordination. using splX() simply does not work
on multiprocessor systems.

fixes PR kern/55506

Use mutex for lwp/interrupt coordination. using splX() simply does not work
on multiprocessor systems.

fixes PR kern/55506

Mostly merge changes from HEAD upto 20200411

Remove GPIO driver attach defer.

spi: prepare for fdt direct attachment of spi slaves

Introduce sba_child_devices array in spibus_attach_args. If the parent has
populated sba_child_devices then attach them first. Then do any devices
devices the user has wired in the kernel config, if any.

Sync with HEAD

Add userland driver to spi framework.

Previously spi would configure the controller to use the lowest speed of
all connected devices since the kernel started and to fail attempted mode
changes. This is now improved to keep individual modes and speeds for each
slave and to reconfigure the controller as necessary for each transfer.

Added man page for spi(9).

Rebase to HEAD as of a few days ago.

Rebase.

"peripheral", not "peripherial".

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

G/C sys/simplelock.h includes

Let the bus speed of SPI devices be specified within the kernel
configuration.

Just like for the I2C and GPIO buses, added an interrupt locator to the SPI
bus, so that ARM device drivers on either of these buses (like on the Nokia
N900) can register and react on system interrupts. These interrupts are
typically triggered via GPIO pins.

XXX This change is not adequate because intr_establish() is a MD interface,
    so it will have to be re-designed before merging to the main tree.

Catchup with rmind-uvmplock merge.

sync with head

- Use IPL_BIO (instead of IPL_SERIAL) for SPI.
- Convert simple_lock/ltsleep to mutex/condvar.

Sync with HEAD.

sync with head

sync with HEAD

Sync with HEAD

explicitly include simplelock.h

sync with head.

Sync with head.

sync with head

file spivar.h was added on branch yamt-lazymbuf on 2006-12-30 20:49:37 +0000

file spivar.h was added on branch newlock2 on 2006-11-18 21:34:50 +0000

file spivar.h was added on branch yamt-splraiseipl on 2006-10-22 06:06:48 +0000

Add spiflash driver, and M25P instance, used for STMicro flash devices
found on Meraki Mini (for example).

Initial commit of SPI bus (also known as Microwire) framework, along with
a sample driver for the TI TMP121 temperature sensor.  This has been
moderately tested on Au1550, and it is not enabled in sys/conf (yet).  So
the change is harmless at worst, and useful at best.

Alchemy Au1550 bus driver forthcoming, along with a driver for SPI flash
devices, such as found on the Meraki Mini

This development was partially funded by the Champaign-Urbana Community
Wireless Network Project.

Note that there are some MD-specific SPI drivers that could probably be
made MI under this new framework.