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>
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@ -250,6 +250,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
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DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
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},
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},
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{
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/* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
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.callback = video_detect_force_video,
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.ident = "SAMSUNG 530U4E/540U4E",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
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},
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},
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/* Non win8 machines which need native backlight nevertheless */
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{
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