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ACPI: video: Add backlight=native DMI quirk for Dell G15 5515

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The Dell G15 5515 has the WMI interface (and WMI call returns) expected
by the nvidia-wmi-ec-backlight interface. But the backlight class device
registered by the nvidia-wmi-ec-backlight driver does not actually work.

The amdgpu_bl0 native GPU backlight class device does actually work,
add a backlight=native DMI quirk for this.

Reported-by: Iris <pawel.js@protonmail.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
- Add a comment that this needs to be revisited when dynamic-mux
  support gets added (suggested by: Daniel Dadap)
This commit is contained in:
Hans de Goede 2022-10-31 21:20:59 +01:00
parent 454d61a56d
commit f46acc1efd
1 changed files with 14 additions and 0 deletions
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14
drivers/acpi/video_detect.c
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@ -645,6 +645,20 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
}, },
}, },
/*
* Models which have nvidia-ec-wmi support, but should not use it.
* Note this indicates a likely firmware bug on these models and should
* be revisited if/when Linux gets support for dynamic mux mode.
*/
{
.callback = video_detect_force_native,
/* Dell G15 5515 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
},
},
/* /*
* Desktops which falsely report a backlight and which our heuristics * Desktops which falsely report a backlight and which our heuristics
* for this do not catch. * for this do not catch.