From eb7b0f12e13ba99e64e3a690c2166895ed63b437 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 7 Sep 2024 14:44:19 +0200 Subject: ACPI: video: Add force_vendor quirk for Panasonic Toughbook CF-18 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 Link: https://patch.msgid.link/20240907124419.21195-1-hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index be24af9da178..b70e84e8049a 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -254,6 +254,14 @@ 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 -- cgit v1.2.3