Commit 8cf04bb3 authored by Hans de Goede's avatar Hans de Goede Committed by Rafael J. Wysocki
Browse files

ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 

Linux defaults to picking the non-working ACPI video backlight interface
on the Apple iMac12,1 and iMac12,2.

Add a DMI quirk to pick the working native radeon_bl0 interface instead.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1838
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2753


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 89c290ea

drivers/acpi/video_detect.c

+18 −0
Original line number Diff line number Diff line
@@ -495,6 +495,24 @@ static const struct dmi_system_id video_detect_dmi_table[] = { 
		DMI_MATCH(DMI_PRODUCT_NAME, "iMac11,3"),

		},

	},

	{

	 /* https://gitlab.freedesktop.org/drm/amd/-/issues/1838 */

	 .callback = video_detect_force_native,

	 /* Apple iMac12,1 */

	 .matches = {

		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),

		DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,1"),

		},

	},

	{

	 /* https://gitlab.freedesktop.org/drm/amd/-/issues/2753 */

	 .callback = video_detect_force_native,

	 /* Apple iMac12,2 */

	 .matches = {

		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),

		DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"),

		},

	},

	{

	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */

	 .callback = video_detect_force_native,