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

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[ Upstream commit 8cf04bb321 ]

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: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hans de Goede
2023-08-07 11:44:08 +02:00
committed by Greg Kroah-Hartman
parent cb1003c07e
commit 27e99d7857
1 changed files with 18 additions and 0 deletions
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18
drivers/acpi/video_detect.c
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@@ -357,6 +357,24 @@ 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,