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ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421X

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Just like the Dell XPS 15 (L521X) the Dell XPS 14 (L421X) needs to use
the acpi-video backlight interface rather then the native one for backlight
control to work, add a quirk for this.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1272633
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Hans de Goede 2015-10-26 15:20:46 +01:00 • committed by Rafael J. Wysocki
commit 61f9738d65
1 changed files with 9 additions and 0 deletions
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9
drivers/acpi/video_detect.c
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@ -232,6 +232,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
"900X3C/900X3D/900X3E/900X4C/900X4D"),
},
},
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
.callback = video_detect_force_video,
.ident = "Dell XPS14 L421X",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
},
},
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
.callback = video_detect_force_video,