1 files changed, 0 insertions, 84 deletions
diff --git a/drivers/edgetpu/abrolhos-device.c b/drivers/edgetpu/abrolhos-device.c
index df23c42..67feb70 100644
--- a/drivers/edgetpu/abrolhos-device.c
+++ b/drivers/edgetpu/abrolhos-device.c
@@ -105,87 +105,3 @@ void edgetpu_chip_handle_reverse_kci(struct edgetpu_dev *etdev,
 		break;
 	}
 }
-
-static int abrolhos_check_ext_mailbox_args(const char *func,
-					   struct edgetpu_dev *etdev,
-					   struct edgetpu_ext_mailbox_ioctl *args)
-{
-	if (args->type != EDGETPU_EXT_MAILBOX_TYPE_TZ) {
-		etdev_err(etdev, "%s: Invalid type %d != %d\n", func,
-			  args->type, EDGETPU_EXT_MAILBOX_TYPE_TZ);
-		return -EINVAL;
-	}
-	if (args->count != 1) {
-		etdev_err(etdev, "%s: Invalid mailbox count: %d != 1\n", func,
-			  args->count);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-int edgetpu_chip_acquire_ext_mailbox(struct edgetpu_client *client,
-				     struct edgetpu_ext_mailbox_ioctl *args)
-{
-	struct edgetpu_mobile_platform_dev *etmdev = to_mobile_dev(client->etdev);
-	int ret;
-
-	ret = abrolhos_check_ext_mailbox_args(__func__, client->etdev,
-					      args);
-	if (ret)
-		return ret;
-
-	mutex_lock(&etmdev->tz_mailbox_lock);
-	if (etmdev->secure_client) {
-		etdev_err(client->etdev,
-			  "TZ mailbox already in use by PID %d\n",
-			  etmdev->secure_client->pid);
-		mutex_unlock(&etmdev->tz_mailbox_lock);
-		return -EBUSY;
-	}
-	ret = edgetpu_mailbox_enable_ext(client, ABROLHOS_TZ_MAILBOX_ID, NULL);
-	if (!ret)
-		etmdev->secure_client = client;
-	mutex_unlock(&etmdev->tz_mailbox_lock);
-	return ret;
-}
-
-int edgetpu_chip_release_ext_mailbox(struct edgetpu_client *client,
-				     struct edgetpu_ext_mailbox_ioctl *args)
-{
-	struct edgetpu_mobile_platform_dev *etmdev = to_mobile_dev(client->etdev);
-	int ret = 0;
-
-	ret = abrolhos_check_ext_mailbox_args(__func__, client->etdev,
-					      args);
-	if (ret)
-		return ret;
-
-	mutex_lock(&etmdev->tz_mailbox_lock);
-	if (!etmdev->secure_client) {
-		etdev_warn(client->etdev, "TZ mailbox already released\n");
-		mutex_unlock(&etmdev->tz_mailbox_lock);
-		return 0;
-	}
-	if (etmdev->secure_client != client) {
-		etdev_err(client->etdev,
-			  "TZ mailbox owned by different client\n");
-		mutex_unlock(&etmdev->tz_mailbox_lock);
-		return -EBUSY;
-	}
-	etmdev->secure_client = NULL;
-	ret = edgetpu_mailbox_disable_ext(client, ABROLHOS_TZ_MAILBOX_ID);
-	mutex_unlock(&etmdev->tz_mailbox_lock);
-	return ret;
-}
-
-void edgetpu_chip_client_remove(struct edgetpu_client *client)
-{
-	struct edgetpu_mobile_platform_dev *etmdev = to_mobile_dev(client->etdev);
-
-	mutex_lock(&etmdev->tz_mailbox_lock);
-	if (etmdev->secure_client == client) {
-		etmdev->secure_client = NULL;
-		edgetpu_mailbox_disable_ext(client, ABROLHOS_TZ_MAILBOX_ID);
-	}
-	mutex_unlock(&etmdev->tz_mailbox_lock);
-}