From: Hans de Goede hdegoede@redhat.com
[ 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@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 | 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.