Re: [PATCH v8] platform/x86: hp-wmi: Add multicolor LED support for HP keyboard backlight

[Ilpo Järvinen]

On Mon, 18 May 2026, Коненко Андрей Викторович wrote:

> > 
> > I'm afraid the names are still wrong. Your patch results in e.g. :
> > 
> > hp::kbd_backlight_zone-right
> > 
> > where as per:
> > 
> > https://lore.kernel.org/linux-leds/20260504145434.12746-1-johannes.goede@oss
> > .qualcomm.com/
> > 
> > this should be:
> > 
> > hp::kbd_zoned_backlight-right
> > 
> > Regards,
> > 
> > Hans
> > 
> 
> I would like to sincerely apologize for the mistake in understanding the 
> documentation. I received feedback pointing out my error, corrected it 
> accordingly, but unfortunately, there was still an oversight. After being 
> notified of the second error, I have now thoroughly reviewed everything again 
> and made all necessary corrections.
> 
> I truly appreciate your patience and guidance throughout this process. Your 
> feedback has been extremely helpful in helping me reach the correct 
> understanding. I am committed to ensuring that all future submissions are 
> fully compliant with the documentation requirements.
> 
> Thank you for your time and understanding.
> 
> ---
> 
> From: Edip Hazuri <edip@xxxxxxxxx>
> 
> Add support for the HP keyboard RGB backlight found on HP OMEN and
> HP Victus laptops. These keyboards expose per-zone RGB control through
> WMI commands.
> 
> Register multicolor LED class devices for each keyboard zone (up to 4
> zones, depending on the keyboard type). Each zone exposes individual
> red, green, and blue channels via the multicolor LED subsystem.
> 
> Also hardware-initiated brightness changes (e.g. via the keyboard
> backlight hotkey, mostly fn+f4) are reported.
> 
> The color data is stored in a 128-byte color table managed by the
> firmware, with RGB values starting at offset 25, packed sequentially
> per zone.
> 
> Signed-off-by: Konenko Andrey Viktorovich <admin@xxxxxxxxxx>
> 
> ---
> 
> Changes since v7:
>  - The LED class device names changed to be consistent with the documentation.
> 
> Changes since v6:
>  - The LED class device names have been made more consistent with the 
> documentation, in accordance with patch https://lore.kernel.org/linux-leds/
> 20260504145434.12746-1-johannes.goede@xxxxxxxxxxxxxxxx/
> underscores have been replaced with dashes where indicated.
> 
> Changes since v5:
>  - LED class device names changed from a number to using a descriptive name 
> for each zone.
> 
> v4: https://lore.kernel.org/all/20260303084022.7223-3-edip@xxxxxxxxx/
> 
> Changes since v4:
>  - Fix circular dependencies
> 
> Changes since v3:
>  - Merge the changes into a single commit
> 
> Changes since v1:
>  - Fix mentioned style errors
>  - Add Kconfig dependencies
> 
> ---
> 
>  drivers/platform/x86/hp/Kconfig  |   2 +
>  drivers/platform/x86/hp/hp-wmi.c | 284 ++++++++++++++++++++++++++++++-
>  2 files changed, 285 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/platform/x86/hp/Kconfig b/drivers/platform/x86/hp/Kconfig
> index dd51491b9bcd..2a1841cbec76 100644
> --- a/drivers/platform/x86/hp/Kconfig
> +++ b/drivers/platform/x86/hp/Kconfig
> @@ -45,6 +45,8 @@ config HP_WMI
>  	select INPUT_SPARSEKMAP
>  	select ACPI_PLATFORM_PROFILE
>  	select HWMON
> +	select LEDS_CLASS
> +	select LEDS_CLASS_MULTICOLOR
>  	help
>  	  Say Y here if you want to support WMI-based hotkeys on HP laptops 
> and
>  	  to read data from WMI such as docking or ambient light sensor 
> state.
> diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-
> wmi.c
> index d1cc6e7d176c..19da18f68337 100644
> --- a/drivers/platform/x86/hp/hp-wmi.c
> +++ b/drivers/platform/x86/hp/hp-wmi.c
> @@ -14,6 +14,7 @@
>  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>  
>  #include <linux/acpi.h>
> +#include <linux/array_size.h>
>  #include <linux/cleanup.h>
>  #include <linux/compiler_attributes.h>
>  #include <linux/dmi.h>
> @@ -23,6 +24,8 @@
>  #include <linux/input.h>
>  #include <linux/input/sparse-keymap.h>
>  #include <linux/kernel.h>
> +#include <linux/led-class-multicolor.h>
> +#include <linux/leds.h>
>  #include <linux/limits.h>
>  #include <linux/minmax.h>
>  #include <linux/module.h>
> @@ -57,6 +60,7 @@ enum hp_ec_offsets {
>  
>  #define HP_FAN_SPEED_AUTOMATIC	 0x00
>  #define HP_POWER_LIMIT_DEFAULT	 0x00
> +#define HP_COLOR_TABLE_PADDING	 25
>  #define HP_POWER_LIMIT_NO_CHANGE 0xFF
>  
>  #define zero_if_sup(tmp) (zero_insize_support?0:sizeof(tmp)) // use when zero 
> insize is required

Long lines in this patch seem corrupted.

-- 
 i.