Commit 49eb5208 authored Dec 30, 2015 by Aaron Lu Committed by Rafael J. Wysocki Jan 01, 2016

ACPI / video: Add a quirk to force acpi-video backlight on SAMSUNG 530U4E/540U4E

The native interface on SAMSUNG 530U4E/540U4E doesn't work even though
the firmware claims Win8 compatible while the acpi_video interface
works, add a quirk for this.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=108971


Reported-and-tested-by: adam bk <adamdd55@gmail.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 4b4b3b20

drivers/acpi/video_detect.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -250,6 +250,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
		DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
		},
		},
		{
		/* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
		.callback = video_detect_force_video,
		.ident = "SAMSUNG 530U4E/540U4E",
		.matches = {
		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
		DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
		},
		},

		/* Non win8 machines which need native backlight nevertheless */
		{