Commit f46acc1e authored by Hans de Goede's avatar Hans de Goede
Browse files

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



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: default avatarIris <pawel.js@protonmail.com>
Reviewed-by: default avatarDaniel Dadap <ddadap@nvidia.com>
Signed-off-by: default avatarHans 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)
parent 454d61a5

drivers/acpi/video_detect.c

+14 −0
Original line number Diff line number Diff line
@@ -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

	 * for this do not catch.