History log of /freebsd-11-stable/sys/dev/spibus/spibusvar.h
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# 332942 24-Apr-2018 ian

MFC r331868, r332046, r332194-r332196, r332198, r332219, r332231, r332233, r332240, r332258-r332259, r332261, r332292

r331868:
Add opt_platform.h for several modules that have #ifdef FDT in the source.

Submitted by: Andre Albsmeier <Andre.Albsmeier@siemens.com>

r332046:
Add a missing MODULE_DEPEND().

r332194:
Add support for writing/changing spi device ivars. The SPI mode (polarity
and phase) and the maximum bus speed can be changed. The chip select
number cannot be changed, because the device instances which are children
of spibus are inherently associated with the chip select number they were
instantiated for.

r332195:
A couple minor improvements to spibus.c...

- Change the description string to "SPI bus" (was "spibus bus").

- This is the default driver for a SPI bus, not a generic implementation,
so return the probe value that indicates such.

- Use device_delete_children() at detach time, instead of a local loop
to enumerate the children and detach each one individually.

r332196:
Return BUS_PROBE_DEFAULT, not zero, because this is not the one driver
implementation that must be used, it's just the base system default driver.

Also add a comment noting that we're being more liberal about the bus
frequency property than the dts binding documents require.

r332198:
Arrange the list of generated sources as 1-per-line alphbetical, and add
the files required when building for FDT-based systems.

r332219:
Remove the existing identify() hack to force-add a spigen device on
FDT-based systems, and instead add proper FDT probe code. Because this
driver is freebsd-specific and just provides generic userland access to run
spibus transactions, there is no bindings document to mandate a compatible
string, so just arbitrarily use "freebsd,spigen".

r332231:
Generate a spibus_set_[ivarname]() convenience function for each ivar,
now that they can be set.

r332233:
Add an ioctl to get/set the SPI transfer mode. Also, make the bus clock
frequency ioctl actually set the corresponding ivar instead of just storing
the value locally in the softc (and then not using it for anything). Also,
return the correct error code if the ioctl cmd is not recognized.

r332240:
Add the ioctl definitions for spigen get/set spi mode. Should have been
part of r332233.

r332258:
Don't check for impossible NULL return from malloc(..., M_WAITOK).

r332259:
Cast the data pointer to the correct type for the data being accessed (as
opposed to one that accidentally worked on the one arch I test-compiled for
on my first try).

Reported by: np@, O. Hartmann <ohartmann@walstatt.org>
Pointy hat: ian@

r332261:
Add a manpage for spigen(4).

r332292:
Allow hinted attachment on FDT-based systems. Instead of returning ENXIO
when the FDT data doesn't enable the device instance, return
BUS_PROBE_NOWILDCARD, the same as for non-FDT systems.


# 331506 24-Mar-2018 ian

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".


# 302408 07-Jul-2016 gjb

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


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# 300710 26-May-2016 adrian

[spibus] add initial placeholders for transfer mode and frequency.

This doesn't yet implement it in the controllers or the transfer
calls, but it's a start.

Obtained from: loos (frequency), ray/zrouter (transfer mode)


# 278957 18-Feb-2015 imp

Add copyright statement I should have had on these files in 2006,
based on the spibus_if.m file.


# 257064 24-Oct-2013 loos

Add an OFW SPI compatible bus. Fix the spibus probe to return
BUS_PROBE_GENERIC and not BUS_PROBE_SPECIFIC (0) so the OFW SPI bus can
attach when enabled. Export the spibus devclass_t and driver_t
declarations.

Submitted by: ray
Approved by: adrian (mentor)


# 228471 13-Dec-2011 ed

Replace `inline static' by `static inline'.

If I interpret the C standard correctly, the storage specifier should be
placed before the inline keyword. While at it, replace __inline by
inline in the files affected.


# 160452 17-Jul-2006 cognet

Fix comments.


# 160370 14-Jul-2006 imp

MFp4:
Initial spibus support. Seems to be OK, but needs some polish.

# someone should write a bit-bang spi parallel port interface :-)