Lenovo X1 Carbon advertises both native and vendor backlight
control interfaces.But Linux defaults to picking the native ACPI
video backlight interface, which will make that the vendor
zx_backlight interface to not work.
Add a DMI quirk to force use of the vendor interface.
Signed-off-by: dengxiang <dengxiang@xxxxxxxxxxxx>
---
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 2cc3821b2b16..e647186b4e83 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -875,6 +875,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
},
},
+ {
+ .callback = video_detect_force_vendor,
+ /* Lenovo X1 Carbon */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "KaiTian"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "KaiTian X1 G1d"),
+ },
+ },
{ },
};
--
2.30.2
