diff mbox series

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

Message ID 20230807094408.242069-1-hdegoede@redhat.com
State Accepted
Commit 8cf04bb321f036dd2e523e993897e0789bd5265c
Headers show
Series ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 | expand

Commit Message

Hans de Goede Aug. 7, 2023, 9:44 a.m. UTC 
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>
---
 drivers/acpi/video_detect.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 18cc08c858cf..7cceaf31d928 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -486,6 +486,24 @@  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,