From: Alex Hung <alex.hung@canonical.com>
Date: Thu, 13 Jul 2017 00:45:57 +0000 (-0700)
Subject: ACPI / video: Add force_none quirk for Dell OptiPlex 9020M
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1f59ab2783aed04f1318b840950801e38b2bebdf;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ACPI / video: Add force_none quirk for Dell OptiPlex 9020M

Dell OptiPlex 9020M is a micro PC desktop that has no built-in
LCD panel and its acpi_video does not work.

Signed-off-by: Alex Hung <alex.hung@canonical.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 d179e8d9177d..601e5d372887 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -103,6 +103,12 @@ static int video_detect_force_native(const struct dmi_system_id *d)
 	return 0;
 }
 
+static int video_detect_force_none(const struct dmi_system_id *d)
+{
+	acpi_backlight_dmi = acpi_backlight_none;
+	return 0;
+}
+
 static const struct dmi_system_id video_detect_dmi_table[] = {
 	/* On Samsung X360, the BIOS will set a flag (VDRV) if generic
 	 * ACPI backlight device is used. This flag will definitively break
@@ -313,6 +319,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
 		},
 	},
+	{
+	 .callback = video_detect_force_none,
+	 .ident = "Dell OptiPlex 9020M",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"),
+		},
+	},
 	{ },
 };