acpi_ibm: pass brightness events to evdev(4)

unless the dev.acpi_ibm.0.handlerevents sysctl is set to process
them internally. The default for the latter is to ignore them,
so passing to evdev(4) i

acpi_ibm: pass brightness events to evdev(4)

unless the dev.acpi_ibm.0.handlerevents sysctl is set to process
them internally. The default for the latter is to ignore them,
so passing to evdev(4) is enabled by default.

Reviewed by: wulf, imp
Tested on: Lenovo Thinpad X11 Carbon 7Th Gen
Differential Revision: https://reviews.freebsd.org/D48174

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

acpi_support: Remove unused devclass arguments to DRIVER_MODULE.

acpi_support: Remove CTLFLAG_NEEDGIANT from sysctls.

MFC after: 2 weeks

acpi_ibm(4): Rename disengaged mode to unthrottled mode.

This mode was added in r362496. Rename it to make the meaning more
clear.

PR: 247306
Suggested by: rpokala
Submitted by: Ali Abdallah <ali

acpi_ibm(4): Rename disengaged mode to unthrottled mode.

This mode was added in r362496. Rename it to make the meaning more
clear.

PR: 247306
Suggested by: rpokala
Submitted by: Ali Abdallah <ali.abdallah@suse.com>
MFC with: r362496

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acpi_ibm(4): Add support for putting fans in disengaged mode.

PR: 247306
Submitted by: Ali Abdallah <ali.abdallah@suse.com>
MFC after: 2 weeks

Merge ^/head r358269 through r358399.

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly mark

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked).
Use it in preparation for a general review of all nodes.

This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.

Mark all obvious cases as MPSAFE. All entries that haven't been marked
as MPSAFE before are by default marked as NEEDGIANT

Approved by: kib (mentor, blanket)
Commented by: kib, gallatin, melifaro
Differential Revision: https://reviews.freebsd.org/D23718

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Merge ^/head r357408 through r357661.

acpi_ibm: remove superfluous cast

Reported by: kib

acpi_ibm: whitespace and wrapping cleanup

acpi_ibm: whitespace fixup

Merge ^/head r357270 through r357349.

acpi_ibm: add support for ThinkPad PrivacyGuard

ThinkPad PrivacyGuard is a built-in toggleable privacy filter that
restricts viewing angles when on. It is an available on some new
ThinkPad models su

acpi_ibm: add support for ThinkPad PrivacyGuard

ThinkPad PrivacyGuard is a built-in toggleable privacy filter that
restricts viewing angles when on. It is an available on some new
ThinkPad models such as the X1 Carbon 7th gen (as an optional HW
upgrade).

The privacy filter can be enabled/disabled via an ACPI call. This commit
adds a sysctl under dev.acpi_ibm that allows for getting and setting the
PrivacyGuard state.

Submitted by: Kamila Součková <kamila@ksp.sk>
Reviewed By: cem, philip
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D23370

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acpi_ibm: reference ThinkPad instead of IBM

These are now Lenovo ThinkPads, not IBM ThinkPads.

PR: 234403
Submitted by: Kevin Zheng <kevinz5000@gmail.com> (original)

MFHead @347527

Sponsored by: The FreeBSD Foundation

[acpi_ibm] Add support for newer Thinkpad models

Add support for newer Thinkpad models with id LEN0268. Was tested on
Thinkpad T480 and ThinkPad X1 Yoga 2nd gen.

PR: 229120
Submitted by: Ali Abdal

[acpi_ibm] Add support for newer Thinkpad models

Add support for newer Thinkpad models with id LEN0268. Was tested on
Thinkpad T480 and ThinkPad X1 Yoga 2nd gen.

PR: 229120
Submitted by: Ali Abdallah <aliovx@gmail.com>
MFC after: 1 week

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Merge ^/head r339670 through r339812.

Distinguish _CID match and _HID match and make lower priority probe
when _CID match.

Reviewed by: jhb, imp
Differential Revision:https://reviews.freebsd.org/D16468

acpi: Add support for Thinkpads Mic led

PR: 229074
Submitted by: "Ali Abdallah" <aliovx@gmail.com>

Fix the deciKelvin to Celsius conversion in kernel.

After r285994, sysctl(8) was fixed to use 273.15 instead of 273.20 as 0C
reference and as result, the temperature read in sysctl(8) now exibits a

Fix the deciKelvin to Celsius conversion in kernel.

After r285994, sysctl(8) was fixed to use 273.15 instead of 273.20 as 0C
reference and as result, the temperature read in sysctl(8) now exibits a
+0.1C difference.

This commit fix the kernel references to match the reference value used in
sysctl(8) after r285994.

Sponsored by: Rubicon Communications (Netgate)

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sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

Catch up with HEAD (r280229-r284686).

Merge ^/head r284188 through r284643.

Merge from head