ACPI: video: Add force_vendor quirk for Sony Vaio PCG-FRV35

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>

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 327e0967ba54564712b99a3b5b20accc3ad96c0e..43f667523ab053ed8d08464994c56fd7a6627f32 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -239,6 +239,19 @@ 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.