[PATCH AUTOSEL 6.6 023/139] ACPI: video: Add force_vendor quirk for Panasonic Toughbook CF-18

[Sasha Levin]

From: Hans de Goede <hdegoede@xxxxxxxxxx>

[ Upstream commit eb7b0f12e13ba99e64e3a690c2166895ed63b437 ]

The Panasonic Toughbook CF-18 advertises both native and vendor backlight
control interfaces. But only the vendor one actually works.

acpi_video_get_backlight_type() will pick the non working native backlight
by default, add a quirk to select the working vendor backlight instead.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Link: https://patch.msgid.link/20240907124419.21195-1-hdegoede@xxxxxxxxxx
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 16ab2d9ef67f3..e96afb1622f95 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -260,6 +260,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
 		},
 	},
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Panasonic Toughbook CF-18 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Matsushita Electric Industrial"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
+		},
+	},
 
 	/*
 	 * Toshiba models with Transflective display, these need to use
-- 
2.43.0