platform/x86: dell-laptop: Add quirk entry for Latitude 7520

The Latitude 7520 supports AC timeouts, but it has no KBD_LED_AC_TOKEN
and so changes to stop_timeout appear to have no effect if the laptop
is plugged in.

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Acked-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20220426120827.12363-1-gabriele.mzt@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/drivers/platform/x86/dell/dell-laptop.c b/drivers/platform/x86/dell/dell-laptop.c
index 8230e7a..1321687 100644 (file)
--- a/drivers/platform/x86/dell/dell-laptop.c
+++ b/drivers/platform/x86/dell/dell-laptop.c
@@ -80,6 +80,10 @@ static struct quirk_entry quirk_dell_inspiron_1012 = {
        .kbd_led_not_present = true,
 };
 
+static struct quirk_entry quirk_dell_latitude_7520 = {
+       .kbd_missing_ac_tag = true,
+};
+
 static struct platform_driver platform_driver = {
        .driver = {
                .name = "dell-laptop",
@@ -336,6 +340,15 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
                },
                .driver_data = &quirk_dell_inspiron_1012,
        },
+       {
+               .callback = dmi_matched,
+               .ident = "Dell Latitude 7520",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 7520"),
+               },
+               .driver_data = &quirk_dell_latitude_7520,
+       },
        { }
 };