NACK[F/G]: [PATCH 0/1][SRU][F][G][unstable][OEM-5.10] Stop using get_scalar_status command in Dell AIO uart backlight driver Edit
Stefan Bader
stefan.bader at canonical.com
Thu Mar 25 08:18:19 UTC 2021
On 17.12.20 09:08, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
>
> BugLink: https://bugs.launchpad.net/bugs/1865402
>
> [Impact]
> The get_scalar_status command was provided by ODM engineer and was newly
> introduced to determinate whether scalar is responsible for the backlight
> adjustment. That guy asked the scalar vendor to add this command and the
> command works as expected. But there is already a command in the Dell AIO
> scalar UART command spec. which can do the same thing since 2015, and the
> newly introduced get_scalar_status command is undocumented. To prevent
> from introducing regression in the future and to align with what Windows
> uses, replace this command with get_display_mode command.
>
> [Fix]
> Replace get_scalar_status command with get_display_mode command.
>
> [Test]
> Verified on new Dell AIO platforms.
>
> [Regression Potential]
> Low, the command is already in the spec. since 2015.
>
> Chia-Lin Kao (AceLan) (1):
> UBUNTU: SAUCE: platform/x86: dell-uart-backlight: add get_display_mode
> command
>
> drivers/platform/x86/dell-uart-backlight.c | 91 +++++++++++-----------
> drivers/platform/x86/dell-uart-backlight.h | 7 +-
> 2 files changed, 52 insertions(+), 46 deletions(-)
>
This is still not even in linux-next. As such not really appears to be SRU material.
-Stefan
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