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History log of /src/sys/arch/mips/ralink/ralink_i2c.c
RevisionDateAuthorComments
 1.9  15-Sep-2025  thorpej Encapsulate what's needed to attach an I2C bus into a iicbus_attach()
inline.
 1.8  29-Sep-2022  skrll Remove unnecessary include of <sys/malloc.h>.
 1.7  29-Sep-2022  skrll Trailing whitespace
 1.6  07-Aug-2021  thorpej Merge thorpej-cfargs2.
 1.5  24-Apr-2021  thorpej branches: 1.5.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).
 1.4  22-Dec-2019  thorpej branches: 1.4.10;
Cleanup i2c bus acquire / release, centralizing all of the logic into
iic_acquire_bus() / iic_release_bus(). "acquire" and "release" hooks
no longer need to be provided by back-end controller drivers (only if
they need special handling, e.g. powering on the i2c controller).
This results in the removal of a bunch of rendundant code from each
back-end controller driver.

Assert that we are not in hard interrupt context in iic_acquire_bus(),
iic_exec(), and iic_release_bus().
 1.3  27-Oct-2012  chs branches: 1.3.38;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.2  28-Jul-2011  matt branches: 1.2.2; 1.2.12;
Bring forward from matt-nb5-mips64. Support for Ralink RT3883 MIPS 74K SoC
from CradlePoint Technology.
 1.1  01-Jul-2011  matt branches: 1.1.2;
file ralink_i2c.c was initially added on branch matt-nb5-mips64.
 1.1.2.1  01-Jul-2011  matt Add basic support for the Ralink RT3883 SOC. No support for the wireless
interfaces is present but i2c, uart, ethernet, gpio, ehci, ohci are supported.
This support was contributed by Cradlepoint Technology.
 1.2.12.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.2.2.1  30-Oct-2012  yamt sync with head
 1.3.38.1  08-Apr-2020  martin Merge changes from current as of 20200406
 1.4.10.1  21-Mar-2021  thorpej Give config_found() the same variadic arguments treatment as
config_search(). This commit only adds the CFARG_EOL sentinel
to the existing config_found() calls. Conversion of config_found_sm_loc()
and config_found_ia() call sites will be in subsequent commits.
 1.5.8.1  04-Aug-2021  thorpej Adapt to CFARGS().

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