ACPI: video: use ACPI backlight for HP 635 Notebook
commit b226faab4e
upstream.
The default backlight interface is AMD's radeon_bl0 which does not
work on this system, so use the ACPI backlight interface on it
instead.
BugLink: https://bugs.launchpad.net/bugs/1894667
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Alex Hung <alex.hung@canonical.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -282,6 +282,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
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DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
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},
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},
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/* https://bugs.launchpad.net/bugs/1894667 */
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{
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.callback = video_detect_force_video,
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.ident = "HP 635 Notebook",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
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DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
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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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