ACPI: video: force native for Apple MacbookPro9,2

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

commit b1d36e73cc1c ("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>

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 674b9db7a1ef8b021cccf06fa8db6a21a0c0b51b..75a5f559402f875770728a7f162fb3e27f40b289 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -549,6 +549,14 @@ 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,