Re: [PATCH v7 00/13] leds: Add support for hardware-initiated hardware control trigger transition

[Ilpo Järvinen]

On Mon, 21 Sep 2026 03:40:14 +0800, Rong Zhang wrote:

> Some laptops can tune their keyboard backlight according to ambient
> light sensors (auto mode). This capability is essentially a hardware
> control trigger. Meanwhile, such laptops also offer a shrotcut for
> cycling through brightness levels and auto mode. For example, on
> ThinkBook, pressing Fn+Space ("shortcut") cycles keyboard backlight
> levels in the following sequence:
> 
> [...]

Thank you for your contribution, it has been applied to my local
review-ilpo-next branch. Note it will show up in the public
platform-drivers-x86/review-ilpo-next branch only once I've pushed my
local branch there, which might take a while.

FYI [if applicable to your patch], as per Linus' policy change, also
fixes are mostly routed through for-next unless the fix is for a
commit introduced in the most recent cycle or is clearly a regression
fix.

The list of commits applied:
[01/13] leds: class: Always protect brightness_show() with led_access
        (no commit info)
[02/13] leds: trigger: Move led_trigger_is_hw_controlled() to the right place
        (no commit info)
[03/13] leds: class: Remove hardware control trigger when writing brightness
        (no commit info)
[04/13] leds: trigger: Move led_trigger_group to the right place
        (no commit info)
[05/13] leds: trigger: Add hw_offloaded() callback and provide trigger_may_offload_to_hw attribute
        (no commit info)
[06/13] leds: cros_ec: Implement hw_offloaded() trigger callback
        (no commit info)
[07/13] leds: turris-omnia: Implement hw_offloaded() trigger callback and declare hw_control_trigger
        (no commit info)
[08/13] leds: trigger: netdev: Implement hw_offloaded() callback
        (no commit info)
[09/13] leds: trigger: Enforce strict checks in led_trigger_is_hw_controlled()
        (no commit info)
[10/13] leds: trigger: Add led_trigger_notify_hw_control_changed() interface
        (no commit info)
[11/13] platform/x86: ideapad-laptop: Serialize keyboard backlight tracking
        commit: d288a6f989b7b9e6a730140c601987b886af327e
[12/13] platform/x86: ideapad-laptop: Decouple hardware & classdev brightness for keyboard backlight
        commit: 7d6c073d181d7855561831cb4bba17dc9b7d4aa9
[13/13] platform/x86: ideapad-laptop: Fully support auto keyboard backlight
        commit: 5d805ca01382d63d54c9984e7f19922c4ae6f3dc

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 i.