[PATCH v4 4/4] platform/x86: uniwill-laptop: Handle FN lock event

[Armin Wolf <W_Armin@gmx.de>]

On many devices, the user can toggle the Fn lock state by
pressing Fn + Esc. Forward the associated event to the fn_lock
sysfs attribute as a poll notification.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
---
 drivers/platform/x86/uniwill/uniwill-acpi.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
index 29daf83c0b26..8f214489e9ed 100644
--- a/drivers/platform/x86/uniwill/uniwill-acpi.c
+++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
@@ -406,9 +406,6 @@ static const struct key_entry uniwill_keymap[] = {
 	/* Reported when the user wants to toggle the mute status */
 	{ KE_IGNORE,    UNIWILL_OSD_MUTE,                       { KEY_MUTE }},
 
-	/* Reported when the user locks/unlocks the Fn key */
-	{ KE_IGNORE,    UNIWILL_OSD_FN_LOCK,                    { KEY_FN_ESC }},
-
 	/* Reported when the user wants to toggle the brightness of the keyboard */
 	{ KE_KEY,       UNIWILL_OSD_KBDILLUMTOGGLE,             { KEY_KBDILLUMTOGGLE }},
 	{ KE_KEY,       UNIWILL_OSD_KB_LED_LEVEL0,              { KEY_KBDILLUMTOGGLE }},
@@ -1376,6 +1373,13 @@ static int uniwill_notifier_call(struct notifier_block *nb, unsigned long action
 		 * gets implemented.
 		 */
 
+		return NOTIFY_OK;
+	case UNIWILL_OSD_FN_LOCK:
+		if (!uniwill_device_supports(data, UNIWILL_FEATURE_FN_LOCK))
+			return NOTIFY_DONE;
+
+		sysfs_notify(&data->dev->kobj, NULL, "fn_lock");
+
 		return NOTIFY_OK;
 	default:
 		mutex_lock(&data->input_lock);
-- 
2.39.5