From: Hans de Goede <hdegoede@redhat.com>
Date: Fri, 13 Jan 2023 11:41:26 +0000 (+0100)
Subject: ACPI: video: Add backlight=native DMI quirk for Acer Aspire 4810T
X-Git-Tag: v6.1.15~549
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=99db989945cd87fd91cd9a5ef9ee33ade70e4ad9;p=platform%2Fkernel%2Flinux-starfive.git

ACPI: video: Add backlight=native DMI quirk for Acer Aspire 4810T

[ Upstream commit 8ba5fc4c154aeb3b4620f05543cce426c62ed2de ]

The Acer Aspire 4810T predates Windows 8, so it defaults to using
acpi_video# for backlight control, but this is non functional on
this model.

Add a DMI quirk to use the native backlight interface which does
work properly.

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>
---

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 5c32b31..b48f85c 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -495,6 +495,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 	},
 	{
 	 .callback = video_detect_force_native,
+	 /* Acer Aspire 4810T */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
 	 /* Acer Aspire 5738z */
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),