Add a skeleton driver for Asus EeePC acpiwmi(4) mappings.

branches: 1.7.2; 1.7.4;
Add acpiwmi(4) mappings for MSI laptops.

XXX: It may be necessary to fix PR # 43659 before this works on all models.

branches: 1.6.2;
Remove the acpiwmi(4) dump from the ACPIVERBOSE module. Instead of this
complex solution, just use aprint_debug(9) in the driver.

correct an obvious typo: acpwmi -> acpiwmi

Extract ACPIVERBOSE into a kernel module. The module can be builtin
by defining 'options ACPIVERBOSE' in the kernel config file (no change
from current behavior), or it can be loaded at boot time on those
architectures that support the boot loader's "load" command.

ACPIVERBOSE also includes code to dump acpi/wmi data.

branches: 1.3.2; 1.3.4;
Add WMI mappings for HP laptops. Requested by cegger@.
Thanks to apb@ and cegger@ for initial testing.

XXX: This conflicts with hpqlb(4). Someone with the suitable hardware needs
to complete the list of hotkeys before -- and if -- this can replace
hpqlb(4). For now, the driver was left uncommented in the GENERICs.

Move acpiwmi(4) to the "sys/dev/acpi/wmi" -subdirectory.

Add WMI mappings for Dell laptops. Requested and tested by mrg@.

acpiwmi(4): Fix abuse of char buffer for struct guid_t content.

Nothing guarantees alignment, so this is all undefined behaviour,
even if we don't touch the uninitialized members.

XXX pullup-10
XXX pullup-9
XXX pullup-8

don't assign struct pointers to smaller then structure regions of memory.

in all cases here, the later parts of the structure are not actually
accessed, so there are no existing bugs here beyond general UB. for the
ufs ones, this also removes some casts.

found by GCC 12.

acpiwmi(4): Use config_detach_children.

fix various typos in comments.

Merge thorpej-cfargs2.

branches: 1.18.8;
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?).

branches: 1.17.2;
Use acpi_compatible_match().

branches: 1.16.18;
- make sure strtoul() is called with a NULL-terminated string.
- acpi_wmi_input(): a valid data block may have flags set to 0.

remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

branches: 1.14.2; 1.14.16;
Use KM_SLEEP.

branches: 1.13.2;
- Fix wmieeepc(4) hotkeys on Eee PC 1215T
- Rework wmi_event_enable into appropriately seperate versions for enabling
events and collection.
- Enable all events, not just ones tagged as expensive.

Convert the homegrown module declarations to use ioconf.

branches: 1.11.2; 1.11.4;
Install EC space handler and pass everything to acpiec(4).
Should fix PR # 43659.

Fix build failure.

add support for building as a module

add rescan support

branches: 1.7.2;
Remove the acpiwmi(4) dump from the ACPIVERBOSE module. Instead of this
complex solution, just use aprint_debug(9) in the driver.

Add "pnp0c14" to the list of HIDs. Required for LG X110. As valid EISA IDs
should be all upper case, leave this as a onetime quirk specific to acpiwmi(4).

Extract ACPIVERBOSE into a kernel module. The module can be builtin
by defining 'options ACPIVERBOSE' in the kernel config file (no change
from current behavior), or it can be loaded at boot time on those
architectures that support the boot loader's "load" command.

ACPIVERBOSE also includes code to dump acpi/wmi data.

branches: 1.4.2; 1.4.4;
As discussed with jmcneill@, install a global "bus notification handler"
that receives all notifications and deliver notifications to drivers via it.

Fix a potential NULL pointer dereference.

Semantics.

Move acpiwmi(4) to the "sys/dev/acpi/wmi" -subdirectory.

Revert previous for now:
http://mail-index.netbsd.org/source-changes/2020/04/16/msg116278.html

The reasoning turned out to be wrong; __KERNEL_RCSID() in header files
does *not* overwrite RCSID in main source files. The real problem is that
it inserts its RCSID into *every* object files. However, it can be still
useful even if heavily duplicated.

Stop using __KERNEL_RCSID() in header files; it confuses ident(1) by
overwriting RCSID in main source files.

XXX
The first argument of __KERNEL_RCSID() is neglected for ELF. If we wish
to have RCSID of header files in kernel binary, we need something like
__FBSDID() macro in FreeBSD.

branches: 1.5.72;
Install EC space handler and pass everything to acpiec(4).
Should fix PR # 43659.

branches: 1.4.2;
Remove trailing white space.

Extract ACPIVERBOSE into a kernel module. The module can be builtin
by defining 'options ACPIVERBOSE' in the kernel config file (no change
from current behavior), or it can be loaded at boot time on those
architectures that support the boot loader's "load" command.

ACPIVERBOSE also includes code to dump acpi/wmi data.

branches: 1.2.2; 1.2.4;
Semantics.

Move acpiwmi(4) to the "sys/dev/acpi/wmi" -subdirectory.

Finally fix problem discussed in this old thread:
http://mail-index.netbsd.org/tech-kern/2017/12/03/msg022661.html

Dell's radio hotkey sends a PMFE_RADIO_TOGGLE event, but nothing actually
listen to it.
Turn it into a PSWITCH_HK_WIRELESS_BUTTON hotkey, similar to
what thinkpad_acpi.c does.
Add type/subtypes seen on a Dell lattitude 5480 laptop.
XXX we need a PMFE_AUDIO_MICRO_TOGGLE, and something to handle it.

branches: 1.11.4;
make this compile again and:
- remove extra space
- use alternate form %x printing
- use aprint_debug_dev instead of printf

Fix dell WMI mappings:
- query the descriptor to get the interface version, needed to workaround
a bug in the BIOS/ACPI
- properly decode the event buffer in type/subtype, and handle multiple events
per handler call
- record some known type/subtype in a table, with associated actions.

Informations mostly from linux. Tested on a Dell 5480 laptop.

Update module dependencies for all the existing modules that depend on sysmon components.

branches: 1.8.14; 1.8.32;
Make the WMI modules depend on the parent mapper.

Convert the homegrown module declarations to use ioconf.

branches: 1.6.2; 1.6.4;
Bump WARNS to 4.

add support for building as modules

branches: 1.4.2;
Initialize pointers to NULL. Otherwise we may try to free garbage.
Tries to address a panic reported by David Demelier in PR kern/43504.

branches: 1.3.2; 1.3.4;
Move acpiwmi(4) to the "sys/dev/acpi/wmi" -subdirectory.

Add a dummy acpi_wmi_event_deregister() to match existing conventions.

Add WMI mappings for Dell laptops. Requested and tested by mrg@.

Remove the acpiwmi(4) dump from the ACPIVERBOSE module. Instead of this
complex solution, just use aprint_debug(9) in the driver.

branches: 1.1.2;
Extract ACPIVERBOSE into a kernel module. The module can be builtin
by defining 'options ACPIVERBOSE' in the kernel config file (no change
from current behavior), or it can be loaded at boot time on those
architectures that support the boot loader's "load" command.

ACPIVERBOSE also includes code to dump acpi/wmi data.

Update module dependencies for all the existing modules that depend on sysmon components.

branches: 1.3.12; 1.3.30;
Implement recognition of more wmieeepc(4) hotkey events.

branches: 1.2.2; 1.2.4; 1.2.8;
Make the WMI modules depend on the parent mapper.

Add a skeleton driver for Asus EeePC acpiwmi(4) mappings.

Remove duplicate ;

branches: 1.10.8;
remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

Update module dependencies for all the existing modules that depend on sysmon components.

branches: 1.8.6;
Ensure that the top level sysctl nodes (kern, vfs, net, ...) exist before
the sysctl link sets are processed, and remove redundancy.

Shaves >13kB off of an amd64 GENERIC, not to mention >1k duplicate
lines of code.

branches: 1.7.2;
Add support for various things:
- hddtemp sensor
- ambient light sensor on/off (via sysctl)
- display info
- docking station info

branches: 1.6.4; 1.6.14;
Make the WMI modules depend on the parent mapper.

Convert the homegrown module declarations to use ioconf.

branches: 1.4.2; 1.4.4;
Bump WARNS to 4.

add support for building as modules

branches: 1.2.2;
Initialize pointers to NULL. Otherwise we may try to free garbage.
Tries to address a panic reported by David Demelier in PR kern/43504.

branches: 1.1.2; 1.1.4;
Add WMI mappings for HP laptops. Requested by cegger@.
Thanks to apb@ and cegger@ for initial testing.

XXX: This conflicts with hpqlb(4). Someone with the suitable hardware needs
to complete the list of hotkeys before -- and if -- this can replace
hpqlb(4). For now, the driver was left uncommented in the GENERICs.

branches: 1.5.2;
Make the WMI modules depend on the parent mapper.

Convert the homegrown module declarations to use ioconf.

branches: 1.3.2; 1.3.4; 1.3.6;
Bump WARNS to 4.

add support for building as modules

Add acpiwmi(4) mappings for MSI laptops.

XXX: It may be necessary to fix PR # 43659 before this works on all models.