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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: Takashi Iwai <tiwai@suse.de>,
	"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Sasha Levin <sashal@kernel.org>,
	rafael@kernel.org,
	linux-acpi@vger.kernel.org
Subject: [PATCH AUTOSEL 6.8 26/30] ACPI: video: Add backlight=native quirk for Lenovo Slim 7 16ARH7
Date: Mon, 27 May 2024 10:13:35 -0400
Message-ID: <20240527141406.3852821-26-sashal@kernel.org>
In-Reply-To: <20240527141406.3852821-1-sashal@kernel.org>
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From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit c901f63dc142c48326931f164f787dfff69273d9 ]

Lenovo Slim 7 16ARH7 is a machine with switchable graphics between AMD
and Nvidia, and the backlight can't be adjusted properly unless
acpi_backlight=native is passed.  Although nvidia-wmi-backlight is
present and loaded, this doesn't work as expected at all.

For making it working as default, add the corresponding quirk entry
with a DMI matching "LENOVO" "82UX".

Link: https://bugzilla.suse.com/show_bug.cgi?id=1217750
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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 9fdcc620c6524..2cc3821b2b16e 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -497,6 +497,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Lenovo Slim 7 16ARH7 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "82UX"),
+		},
+	},
 	{
 	 .callback = video_detect_force_native,
 	 /* Lenovo ThinkPad X131e (3371 AMD version) */
-- 
2.43.0