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* [PATCH] ACPI / video: Add a quirk to force acpi-video backlight on SAMSUNG 530U4E/540U4E
@ 2015-12-30  5:11 Aaron Lu
  2016-01-03  0:36 ` Rafael J. Wysocki
  0 siblings, 1 reply; 2+ messages in thread
From: Aaron Lu @ 2015-12-30  5:11 UTC (permalink / raw)
  To: Rafael J. Wysocki; +Cc: ACPI Devel Mailing List, adam bk, Jani Nikula

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.

Buglink: 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>
---
 drivers/acpi/video_detect.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index daaf1c4e1e0f..518f9cdc929d 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -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 */
 	{
-- 
2.5.0


^ permalink raw reply related	[flat|nested] 2+ messages in thread

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2015-12-30  5:11 [PATCH] ACPI / video: Add a quirk to force acpi-video backlight on SAMSUNG 530U4E/540U4E Aaron Lu
2016-01-03  0:36 ` Rafael J. Wysocki

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