ACPI: video: Use native backlight on Acer Aspire 5783z

[ Upstream commit 1c8fbc1f9bfb804ef2f0d4ee9397ab800e33f23a ]

The Acer Aspire 5783z shipped with Windows 7 and as such does not trigger
our "win8 ready" heuristic for prefering the native backlight interface.

Still ACPI backlight control doesn't work on this model, where as the
native (intel_video) backlight interface does work. Add a quirk to
force using native backlight control on this model.

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>

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 214c4e2e8ade1db216621f9921e389ca50215df2..5f0178967d14c16b1152033c916fe7d9e9fca338 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -328,6 +328,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
                DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
                },
        },
+       {
+        .callback = video_detect_force_native,
+        .ident = "Acer Aspire 5738z",
+        .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
+               DMI_MATCH(DMI_BOARD_NAME, "JV50"),
+               },
+       },
 
        /*
         * Desktops which falsely report a backlight and which our heuristics