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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Hans de Goede <hdegoede@redhat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Sasha Levin <sashal@kernel.org>, rafael@kernel.org,
        linux-acpi@vger.kernel.org
Subject: [PATCH AUTOSEL 6.4 05/12] ACPI: video: Add backlight=native DMI quirk for Apple iMac11,3
Date:   Sun,  2 Jul 2023 15:50:50 -0400
Message-Id: <20230702195057.1787686-5-sashal@kernel.org>
In-Reply-To: <20230702195057.1787686-1-sashal@kernel.org>
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From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 48436f2e9834b46b47b038b605c8142a1c07bc85 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 bcc25d457581d..61586caebb01b 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,
-- 
2.39.2