From: Hans de Goede <hdegoede@xxxxxxxxxx>
[ Upstream commit 23735543eb228c604e59f99f2f5d13aa507e5db2 ]
The Sony Vaio PCG-FRV35 advertises both native and vendor backlight
control interfaces. With the upcoming changes to prefer native over
vendor acpi_video_get_backlight_type() will start returning native on
these laptops.
But the native radeon_bl0 interface does not work, where as the sony
vendor interface does work. Add a quirk to force use of the vendor
interface.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/acpi/video_detect.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 0ab98f2e484c..8e8b435b4c8c 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -237,6 +237,19 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
},
},
+ /*
+ * Models which should use the vendor backlight interface,
+ * because of broken native backlight control.
+ */
+ {
+ .callback = video_detect_force_vendor,
+ /* Sony Vaio PCG-FRV35 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
+ },
+ },
+
/*
* Toshiba models with Transflective display, these need to use
* the toshiba_acpi vendor driver for proper Transflective handling.
--
2.35.1
