Bluetooth: btusb: Add support for USB based AMP controllers
The Bluetooth HCI transport specification for USB device defines on how
a standard AMP controller is identified and operated. This patch adds
the needed handling to hook it up to the Bluetooth stack.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 9d2d059..d114786 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -51,11 +51,15 @@
#define BTUSB_MARVELL 0x800
#define BTUSB_SWAVE 0x1000
#define BTUSB_INTEL_NEW 0x2000
+#define BTUSB_AMP 0x4000
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
+ /* Generic Bluetooth AMP device */
+ { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
+
/* Apple-specific (Broadcom) devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
@@ -320,6 +324,7 @@
struct usb_endpoint_descriptor *isoc_rx_ep;
__u8 cmdreq_type;
+ __u8 cmdreq;
unsigned int sco_num;
int isoc_altsetting;
@@ -973,7 +978,7 @@
}
dr->bRequestType = data->cmdreq_type;
- dr->bRequest = 0;
+ dr->bRequest = data->cmdreq;
dr->wIndex = 0;
dr->wValue = 0;
dr->wLength = __cpu_to_le16(skb->len);
@@ -2640,7 +2645,13 @@
if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
return -ENODEV;
- data->cmdreq_type = USB_TYPE_CLASS;
+ if (id->driver_info & BTUSB_AMP) {
+ data->cmdreq_type = USB_TYPE_CLASS | 0x01;
+ data->cmdreq = 0x2b;
+ } else {
+ data->cmdreq_type = USB_TYPE_CLASS;
+ data->cmdreq = 0x00;
+ }
data->udev = interface_to_usbdev(intf);
data->intf = intf;
@@ -2672,6 +2683,11 @@
hdev->bus = HCI_USB;
hci_set_drvdata(hdev, data);
+ if (id->driver_info & BTUSB_AMP)
+ hdev->dev_type = HCI_AMP;
+ else
+ hdev->dev_type = HCI_BREDR;
+
data->hdev = hdev;
SET_HCIDEV_DEV(hdev, &intf->dev);
@@ -2718,8 +2734,13 @@
if (id->driver_info & BTUSB_ATH3012)
hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
- /* Interface numbers are hardcoded in the specification */
- data->isoc = usb_ifnum_to_if(data->udev, 1);
+ if (id->driver_info & BTUSB_AMP) {
+ /* AMP controllers do not support SCO packets */
+ data->isoc = NULL;
+ } else {
+ /* Interface numbers are hardcoded in the specification */
+ data->isoc = usb_ifnum_to_if(data->udev, 1);
+ }
if (!reset)
set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
