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| author | Hans de Goede <[email protected]> | 2024-08-14 19:01:59 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2024-08-19 13:58:52 +0000 |
| commit | 5c7bb62cb8f53de71d8ab3d619be22740da0b837 (patch) | |
| tree | f987c5c3df61d5d12e9e545aca2193614d090026 /drivers/platform/surface/aggregator/controller.c | |
| parent | platform/x86: dell-uart-backlight: Use acpi_video_get_backlight_type() (diff) | |
| download | kernel-5c7bb62cb8f53de71d8ab3d619be22740da0b837.tar.gz kernel-5c7bb62cb8f53de71d8ab3d619be22740da0b837.zip | |
ACPI: video: Add backlight=native quirk for Dell OptiPlex 7760 AIO
Dell All In One (AIO) models released after 2017 may use a backlight
controller board connected to an UART.
In DSDT this uart port will be defined as:
Name (_HID, "DELL0501")
Name (_CID, EisaId ("PNP0501")
The Dell OptiPlex 7760 AIO has an ACPI device for one if its UARTs with
the above _HID + _CID. Loading the dell-uart-backlight driver shows that
there actually is a backlight controller board attached to the UART,
which reports a firmware version of "G&MX01-V15".
But the backlight controller board does not actually control the backlight
brightness and the GPU's native backlight control method does work.
Add a quirk to use the GPU's native backlight control method on this model.
Fixes: 484bae9e4d6a ("platform/x86: Add new Dell UART backlight driver")
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2303936
Cc: All applicable <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/platform/surface/aggregator/controller.c')
0 files changed, 0 insertions, 0 deletions