Bluetooth: Add HCIUARTSETFLAGS and HCIUARTGETFLAGS ioctls
This patch introduces two new ioctls: HCIUARTSETFLAGS and
HCIUARTGETFLAGS. The only flag available for now is HCI_UART_RAW_DEVICE
which allows to initialize a UART device into RAW mode from userspace.
This is particularly useful for experimenting with Bluetooth controllers
that don't yet have proper support in BlueZ.
Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index e8beffe..a57dbfc 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -395,6 +395,9 @@
if (!reset)
set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
+ if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags))
+ set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+
if (hci_register_dev(hdev) < 0) {
BT_ERR("Can't register HCI device");
hci_free_dev(hdev);
@@ -475,6 +478,15 @@
return hu->hdev->id;
return -EUNATCH;
+ case HCIUARTSETFLAGS:
+ if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ return -EBUSY;
+ hu->hdev_flags = arg;
+ break;
+
+ case HCIUARTGETFLAGS:
+ return hu->hdev_flags;
+
default:
err = n_tty_ioctl_helper(tty, file, cmd, arg);
break;
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index 50113db..9694d9d 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -31,6 +31,8 @@
#define HCIUARTSETPROTO _IOW('U', 200, int)
#define HCIUARTGETPROTO _IOR('U', 201, int)
#define HCIUARTGETDEVICE _IOR('U', 202, int)
+#define HCIUARTSETFLAGS _IOW('U', 203, int)
+#define HCIUARTGETFLAGS _IOR('U', 204, int)
/* UART protocols */
#define HCI_UART_MAX_PROTO 5
@@ -41,6 +43,8 @@
#define HCI_UART_H4DS 3
#define HCI_UART_LL 4
+#define HCI_UART_RAW_DEVICE 0
+
struct hci_uart;
struct hci_uart_proto {
@@ -57,6 +61,7 @@
struct tty_struct *tty;
struct hci_dev *hdev;
unsigned long flags;
+ unsigned long hdev_flags;
struct hci_uart_proto *proto;
void *priv;
@@ -66,7 +71,7 @@
spinlock_t rx_lock;
};
-/* HCI_UART flag bits */
+/* HCI_UART proto flag bits */
#define HCI_UART_PROTO_SET 0
/* TX states */