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History log of /src/sys/dev/i2c/tcakp.c
RevisionDateAuthorComments
 1.18  17-Sep-2025  thorpej These drivers conditionally support FDT (with an #ifdef). Rather than
blindly assume that i2c_attach_args::ia_cookie is an FDT phandle, consult
self's devhandle and, if the type is DEVHANDLE_TYPE_OF, exctract the phandle
from there.

XXX These drivers should probably become FDT-only (like many others already
are) because the functionality is questionable without information from the
device tree.
 1.17  07-Aug-2021  thorpej branches: 1.17.2;
Merge thorpej-cfargs2.
 1.16  24-Apr-2021  thorpej branches: 1.16.2; 1.16.8;
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?).
 1.15  27-Jan-2021  thorpej branches: 1.15.2;
Use DEVICE_COMPAT_EOL.
 1.14  25-Jan-2021  thorpej Since we're using designated initialisers for compat data, we should
use a completely empty initializer for the sentinel.
 1.13  17-Jan-2021  thorpej Use designated initializers and a consistent termination style in
compat_data[].
 1.12  16-Dec-2020  christos interupt -> interrupt
 1.11  23-Dec-2019  thorpej branches: 1.11.8;
- Don't use I2C_F_POLL.
- Don't access the i2c from hard interrupt context. Instead, schedule a
soft interrupt to do the real work. (No need to mask the interrupt
source, since this device has an edge-sensitive interrupt per the DT
info; will need to be revisited if there's ever a flavor that uses a
level-sensitive interrupt).
- Split out the i2c bus acquire / release from the register read / write
functions, allowing us to batch several i2c transactions under a single
acquire / release cycle.
 1.10  17-Oct-2018  jmcneill lock/unlock I2C bus around transfers as required by API
 1.9  26-Jun-2018  thorpej branches: 1.9.2;
In my quest to make device_compatible_entry (and associated goo)
super-general, it turns out I also made it a little to cumbersome
to use (if my tired fingers are any indication). So, this is a
course-correction -- one string per entry (like of_compat_data,
which it will soon replace), and remove the over-verbose macros.
 1.8  18-Jun-2018  thorpej - Rename iic_compat_match() to iic_compatible_match() and change it
to use the new device_compatible_match() routine. A pointer to
the matching device_compatible_entry is returned if a match is
found.
- Adjust iic_use_direct_match() accordingly.
- i2c drivers now provide device_compatible_entry tables when performing
direct-config matching.
- In the dsrtc driver, take advantage of this new capability to greatly
simplify model selection.

(I'm coming for you next, of_compat_data...)
 1.7  16-Jun-2018  thorpej More cleanup to i2c autoconfiguration:

- Get all of the drivers onto the new match quality constants.
- Introduce a new helper function, iic_use_direct_match(), that has
all of the logic for direct-config matching. If it returns true,
the driver returns the match result (which may be 0). If it returns
false, the driver does indirect-config matching.
- iic_compat_match() now returns a weighted match quality; matches to
lower-indexed "compatible" device property are more-specific matches,
and return a better match quality accordingly.
 1.6  30-Apr-2018  jmcneill tcakp_match: filter on ia_addr for indirect config (device is expected at 0x34)
 1.5  10-Dec-2017  bouyer branches: 1.5.2;
Factor out bus-independant HID code so that it can be shared by USB, bluetooth
and i2c.
dev/usb/ukbdmap.c is renamed to dev/hid/hidkbdmap.c
dev/usb/hid.[ch] moved to dev/hid/
usage pages moved from dev/usb/usbhid.h moved to dev/hid/hid.h,
and updated with OpenBSD entries.
bus-independant code moved from dev/usb/ums.c to dev/hid/hidms.c
(the same should be done for keyboard and touchpad drivers)

Needed for the upcoming HID over I2C support, proposed on tech-kern@
on Dec, 1.
 1.4  31-Aug-2017  jmcneill branches: 1.4.2;
Instead of a Linux keymap, convert Linux event codes to USB scan codes and
use the ukbd keymaps instead.
 1.3  30-Aug-2017  jmcneill Use linux_keymap instead of pckbd keymap
 1.2  26-Aug-2017  jmcneill wscons is not mpsafe, so take kernel lock for intr handler
 1.1  26-Aug-2017  jmcneill Add driver for Texas Instruments TCA8418 I2C Controller Keypad Scan IC.
 1.4.2.2  03-Dec-2017  jdolecek update from HEAD
 1.4.2.1  31-Aug-2017  jdolecek file tcakp.c was added on branch tls-maxphys on 2017-12-03 11:37:02 +0000
 1.5.2.4  20-Oct-2018  pgoyette Sync with head
 1.5.2.3  28-Jul-2018  pgoyette Sync with HEAD
 1.5.2.2  25-Jun-2018  pgoyette Sync with HEAD
 1.5.2.1  02-May-2018  pgoyette Synch with HEAD
 1.9.2.2  08-Apr-2020  martin Merge changes from current as of 20200406
 1.9.2.1  10-Jun-2019  christos Sync with HEAD
 1.11.8.2  03-Apr-2021  thorpej Sync with HEAD.
 1.11.8.1  03-Jan-2021  thorpej Sync w/ HEAD.
 1.15.2.1  23-Mar-2021  thorpej Convert config_found_ia() call sites where the device only carries
a single interface attribute to bare config_found() calls.
 1.16.8.1  04-Aug-2021  thorpej Adapt to CFARGS().
 1.16.2.1  08-May-2021  thorpej ia->ia_cookie -> devhandle_to_of(device_handle(self))
 1.17.2.1  09-Aug-2021  thorpej Port over the changes from thorpej-i2c-spi-conf to thorpej-i2c-spi-conf2,
which is based on a newer HEAD revision.

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