[PATCH AUTOSEL 6.11 028/244] ACPI: video: Add force_vendor quirk for Panasonic Toughbook CF-18

Sasha Levin
2024-09-25T11:37:44Z

From: Hans de Goede <hdegoede@redhat.com>

[ 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@redhat.com>
Link: https://patch.msgid.link/20240907124419.21195-1-hdegoede@redhat.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 674b9db7a1ef8..c35e96c6c1901 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
--
2.43.0