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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>
This commit is contained in:
Aaron Lu 2015-12-30 13:11:24 +08:00 committed by Rafael J. Wysocki
parent 4b4b3b20e8
commit 49eb520822
1 changed files with 9 additions and 0 deletions
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drivers/acpi/video_detect.c
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@ -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 */
{