From 48436f2e9834b46b47b038b605c8142a1c07bc85 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 17 May 2023 11:23:58 +0200
Subject: [PATCH] ACPI: video: Add backlight=native DMI quirk for Apple iMac11,3
Git-commit: 48436f2e9834b46b47b038b605c8142a1c07bc85
Patch-mainline: v6.5-rc1
References: git-fixes
Linux defaults to picking the non-working ACPI video backlight interface
on the Apple iMac11,3 .
Add a DMI quirk to pick the working native radeon_bl0 interface instead.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/acpi/video_detect.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index bcc25d457581..61586caebb01 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -470,6 +470,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
},
},
+ {
+ .callback = video_detect_force_native,
+ /* Apple iMac11,3 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "iMac11,3"),
+ },
+ },
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
.callback = video_detect_force_native,
--
2.35.3