Re: [PATCH AUTOSEL 5.10 4/8] platform/x86: touchscreen_dmi: Add support for setting touchscreen properties from cmdline

Pavel Machek
2024-06-18T09:06:31Z

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Hi!

> [ Upstream commit 0b178b02673998f5acca5a0365a8858ca45beedb ]
>
> On x86/ACPI platforms touchscreens mostly just work without needing any
> device/model specific configuration. But in some cases (mostly with Silead
> and Goodix touchscreens) it is still necessary to manually specify various
> touchscreen-properties on a per model basis.
>
> touchscreen_dmi is a special place for DMI quirks for this, but it can be
> challenging for users to figure out the right property values, especially
> for Silead touchscreens where non of these can be read back from
> the touchscreen-controller.
>
> ATM users can only test touchscreen properties by editing touchscreen_dmi.c
> and then building a completely new kernel which makes it unnecessary
> difficult for users to test and submit properties when necessary for their
> laptop / tablet model.
>
> Add support for specifying properties on the kernel commandline to allow
> users to easily figure out the right settings. See the added documentation
> in kernel-parameters.txt for the commandline syntax.

I don't believe this is suitable for stable.

Best regards,
Pavel
--
People of Russia, stop Putin before his war on Ukraine escalates.

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