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

PATCH Applied Aaron Lu 2 participants 2 messages Dec 30, 2015 – Jan 3, 2016 ACPI

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Aaron Lu

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PATCH 1/1 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.

Buglink https://bugzilla.kernel.org/show_bug.cgi?id=108971
Reported-and-tested-by adam bk <[email protected]>
Signed-off-by Aaron Lu <[email protected]>
---
 drivers/acpi/video_detect.c | 9 +++++++++
 1 file changed, 9 insertions(+)
drivers/acpi/video_detect.c +9 -0
index daaf1c4e1e0f..518f9cdc929d 100644
@@ -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 */
 	{
Signature · 1 line
2.5.0
Applied
#1 lore raw
Quoted 7 lines · Aaron Lu

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 <[email protected]>
Signed-off-by Aaron Lu <[email protected]>

Applied, thanks!

Quoted 25 lines
---
 drivers/acpi/video_detect.c | 9 +++++++++
 1 file changed, 9 insertions(+)
drivers/acpi/video_detect.c +9 -0
index daaf1c4e1e0f..518f9cdc929d 100644
@@ -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 */
 	{
Signature · 2 lines
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.