[PATCH 00/11] HID: Asus: Add RGB Support to Asus Z13, Ally, unify backlight asus-wmi, and Z13 QOL

[Antheas Kapenekakis <lkml@antheas.dev>]

This is a three part series which does the following:
  - Clean init sequence, fix the keyboard of the Z13 (touchpad,fan button)
  - Unifies backlight handling to happen under asus-wmi so that all Aura
    devices have synced brightness controls and the backlight button works
    properly when it is on a USB laptop keyboard instead of one w/ WMI.
  - Adds RGB support to hid-asus, solid colors only, and for the ROG Ally
    units and the Asus Z13 2025 first.

For context, see cover letter of V1.

The last two patches are still a bit experimental, the rest is getting to
be pretty stable by now. I will test my Ally in the weekend. Also, I am
not a fan of the asus-0003:0B05:1A30.0001-led name, so suggestions would
be appreciated.

---
V1: https://lore.kernel.org/all/20250319191320.10092-1-lkml@antheas.dev/

Changes since V1:
  - Add basic RGB support on hid-asus, (Z13/Ally) tested in KDE/Z13
  - Fix ifdef else having an invalid signature (reported by kernel robot)
  - Restore input arguments to init and keyboard function so they can
    be re-used for RGB controls.
  - Remove Z13 delay (it did not work to fix the touchpad) and replace it
    with a HID_GROUP_GENERIC quirk to allow hid-multitouch to load. Squash
    keyboard rename into it.
  - Unregister brightness listener before removing work queue to avoid
    a race condition causing corruption
  - Remove spurious mutex unlock in asus_brt_event
  - Place mutex lock in kbd_led_set after LED_UNREGISTERING check to avoid
    relocking the mutex and causing a deadlock when unregistering leds
  - Add extra check during unregistering to avoid calling unregister when
    no led device is registered.
  - Temporarily HID_QUIRK_INPUT_PER_APP from the ROG endpoint as it causes
    the driver to create 4 RGB handlers per device. I also suspect some
    extra events sneak through (KDE had the @@@@@@).

Antheas Kapenekakis (11):
  HID: asus: refactor init sequence per spec
  HID: asus: prevent binding to all HID devices on ROG
  HID: asus: add Asus Z13 2025 Fan key
  HID: Asus: add Z13 folio to generic group for multitouch to work
  platform/x86: asus-wmi: Add support for multiple kbd RGB handlers
  HID: asus: listen to the asus-wmi brightness device instead of
    creating one
  platform/x86: asus-wmi: remove unused keyboard backlight quirk
  platform/x86: asus-wmi: add keyboard brightness event handler
  HID: asus: add support for the asus-wmi brightness handler
  HID: asus: add basic RGB support
  HID: asus: add RGB support to the ROG Ally units

 drivers/hid/hid-asus.c                     | 342 ++++++++++++++++-----
 drivers/hid/hid-ids.h                      |   2 +-
 drivers/platform/x86/asus-wmi.c            | 138 ++++++++-
 include/linux/platform_data/x86/asus-wmi.h |  67 ++--
 4 files changed, 411 insertions(+), 138 deletions(-)


base-commit: 4701f33a10702d5fc577c32434eb62adde0a1ae1
-- 
2.48.1