platform/x86: dell-privacy: Fix SW_CAMERA_LENS_COVER reporting

commit 1af7fef upstream.

Use KE_VSW instead of KE_SW for the SW_CAMERA_LENS_COVER key_entry
and get the value of the switch from the status field when handling
SW_CAMERA_LENS_COVER events, instead of always reporting 0.

Also correctly set the initial SW_CAMERA_LENS_COVER value.

Fixes: 8af9fa3 ("platform/x86: dell-privacy: Add support for Dell hardware privacy")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221221220724.119594-1-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/platform/x86/dell/dell-wmi-privacy.c

@@ -61,7 +61,7 @@ static const struct key_entry dell_wmi_keymap_type_0012[] = {
 	/* privacy mic mute */
 	{ KE_KEY, 0x0001, { KEY_MICMUTE } },
 	/* privacy camera mute */
-	{ KE_SW,  0x0002, { SW_CAMERA_LENS_COVER } },
+	{ KE_VSW, 0x0002, { SW_CAMERA_LENS_COVER } },
 	{ KE_END, 0},
 };
 
@@ -115,11 +115,15 @@ bool dell_privacy_process_event(int type, int code, int status)
 
 	switch (code) {
 	case DELL_PRIVACY_AUDIO_EVENT: /* Mic mute */
-	case DELL_PRIVACY_CAMERA_EVENT: /* Camera mute */
 		priv->last_status = status;
 		sparse_keymap_report_entry(priv->input_dev, key, 1, true);
 		ret = true;
 		break;
+	case DELL_PRIVACY_CAMERA_EVENT: /* Camera mute */
+		priv->last_status = status;
+		sparse_keymap_report_entry(priv->input_dev, key, !(status & CAMERA_STATUS), false);
+		ret = true;
+		break;
 	default:
 		dev_dbg(&priv->wdev->dev, "unknown event type 0x%04x 0x%04x\n", type, code);
 	}
@@ -307,6 +311,11 @@ static int dell_privacy_wmi_probe(struct wmi_device *wdev, const void *context)
 
 	dev_set_drvdata(&wdev->dev, priv);
 	priv->wdev = wdev;
+
+	ret = get_current_status(priv->wdev);
+	if (ret)
+		return ret;
+
 	/* create evdev passing interface */
 	priv->input_dev = devm_input_allocate_device(&wdev->dev);
 	if (!priv->input_dev)
@@ -345,11 +354,12 @@ static int dell_privacy_wmi_probe(struct wmi_device *wdev, const void *context)
 	priv->input_dev->name = "Dell Privacy Driver";
 	priv->input_dev->id.bustype = BUS_HOST;
 
-	ret = input_register_device(priv->input_dev);
-	if (ret)
-		return ret;
+	/* Report initial camera-cover status */
+	if (priv->features_present & BIT(DELL_PRIVACY_TYPE_CAMERA))
+		input_report_switch(priv->input_dev, SW_CAMERA_LENS_COVER,
+				    !(priv->last_status & CAMERA_STATUS));
 
-	ret = get_current_status(priv->wdev);
+	ret = input_register_device(priv->input_dev);
 	if (ret)
 		return ret;