ACK: Re: [PATCH v2 0/8][SRU][N] Dell AIO backlight is not working, dell_uart_backlight module is missing

[Paolo Pisati]

On Thu, Oct 23, 2025 at 10:53:18AM +0800, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/2083800
> 
> [Impact]
> Dell AIO backlight need dell_uart_backlight module, but
> CONFIG_DELL_UART_BACKLIGHT is not enabled on 6.8.
> 
> [Fix]
> Enable the option in the kernel config, and also replace the old sauce
> driver with the upstream one.
> 
> [Test Case]
> 1. Boot Dell AIO machine to desktop
> 2. The backlight should be controlled through hotkey and/or GUI
> 
> [Where problems could occur]
> This series of patches replace the sauce driver with the upstream one.
> The functionality is the same.
> 
> v2. add all quirks for dell aio
>    5c7bb62cb8f5 ACPI: video: Add backlight=native quirk for Dell OptiPlex 7760 AIO
>    ac78288fe062 ACPI: video: Add backlight=native quirk for Dell OptiPlex 5480 AIO
> 
> Chia-Lin Kao (AceLan) (4):
>   UBUNTU: SAUCE: Removed sauce dell-uart-backlight driver
>   Revert "UBUNTU: SAUCE: ACPI: video: Dell AIO UART backlight detection"
>   UBUNTU: SAUCE: dell_uart_backlight: size_t -> ssize_t
>   UBUNTU: [Config] enable CONFIG_DELL_UART_BACKLIGHT
> 
> Hans de Goede (4):
>   platform/x86: Add new Dell UART backlight driver
>   ACPI: video: Add Dell UART backlight controller detection
>   ACPI: video: Add backlight=native quirk for Dell OptiPlex 7760 AIO
>   ACPI: video: Add backlight=native quirk for Dell OptiPlex 5480 AIO
> 
>  debian.master/config/annotations              |   2 +-
>  drivers/acpi/video_detect.c                   |  34 +-
>  drivers/platform/x86/dell/Kconfig             |  15 +
>  .../platform/x86/dell/dell-uart-backlight.c   | 730 ++++++++----------
>  .../platform/x86/dell/dell-uart-backlight.h   |  41 -
>  include/acpi/video.h                          |   1 +
>  6 files changed, 348 insertions(+), 475 deletions(-)
>  delete mode 100644 drivers/platform/x86/dell/dell-uart-backlight.h
> 
> -- 
> 2.43.0
> 
> 
> -- 
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> kernel-team at lists.ubuntu.com
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Drops a SAUCE driver in favor of an upstream one.

Acked-by: Paolo Pisati <paolo.pisati at canonical.com>
-- 
bye,
p.