ACPI: video: force native for Apple MacbookPro9,2

BugLink: https://bugs.launchpad.net/bugs/2089340

[ Upstream commit 7dc918daaf2994963690171584ba423f28724df5 ]

It used to be that the MacbookPro9,2 used its native intel backlight
device until the following commit was introduced:

commit b1d36e73cc ("drm/i915: Don't register backlight when another
backlight should be used (v2)")

This commit forced this model to use its firmware acpi_video backlight
device instead.

That worked fine until an additional commit was added:

commit 92714006eb4d ("drm/i915/backlight: Do not bump min brightness
to max on enable")

That commit uncovered a bug in the MacbookPro 9,2's acpi_video
backlight firmware; the backlight does not come back up after resume.

Add DMI quirk to select the working native intel interface instead
so that the backlight successfully comes back up after resume.

Fixes: 92714006eb4d ("drm/i915/backlight: Do not bump min brightness to max on enable")
Signed-off-by: Esther Shimanovich <eshimanovich@chromium.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patch.msgid.link/20240806-acpi-video-quirk-v1-1-369d8f7abc59@chromium.org
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Esther Shimanovich

2024-08-06 20:08:47 +00:00

committed by

Mehmet Basaran

parent 42486c4f6d

commit ddf6b3e88a

1 changed files with 8 additions and 0 deletions

									
										drivers/acpi/video_detect.c
									
		+8
		
												View File
												
				@@ -547,6 +547,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {

						DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir9,1"),

						},

					},

					{

					 .callback = video_detect_force_native,

					 /* Apple MacBook Pro 9,2 */

					 .matches = {

						DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),

						DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,2"),

						},

					},

					{

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

					 .callback = video_detect_force_native,