From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 20 Mar 2023 15:59:46 +0000 (+0100)
Subject: ACPI: video: Add backlight=native DMI quirk for Acer Aspire 3830TG
X-Git-Tag: v6.6.17~5255^2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e7a3bf65db57461d0f47955248fcadf37321a74;p=platform%2Fkernel%2Flinux-rpi.git

ACPI: video: Add backlight=native DMI quirk for Acer Aspire 3830TG

The Acer Aspire 3830TG 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>
---

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 14d6d81..fd7cbce 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[] = {
 	},
 	{
 	 .callback = video_detect_force_native,
+	 /* Acer Aspire 3830TG */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3830TG"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
 	 /* Acer Aspire 4810T */
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),