The GPD Pocket is shipping with a BCM2045 USB HCI with its vend:prod
ids set to 0000:0000 and also has its interface class set to 255 (Vendor
Specific Class).
Which, well sucks. Luckily it does advertise usable manufacturer and
product strings, so this commit adds 0000:0000 to the usb_device_id
table, with a special flag of BTUSB_BCM2045_0000_0000, if this flag
is set btusb_probe will check the strings and if they don't match
return -ENODEV.
This is not pretty, but it fixes bluetooth not working under Linux.
Reported-and-tested-by: Christopher Williamson <home@xxxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/bluetooth/btusb.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 7fa373b428f8..9c3201c0525d 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -66,6 +66,7 @@ static struct usb_driver btusb_driver;
#define BTUSB_BCM2045 0x40000
#define BTUSB_IFNUM_2 0x80000
#define BTUSB_CW6622 0x100000
+#define BTUSB_BCM2045_0000_0000 0x200000
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
@@ -124,6 +125,10 @@ static const struct usb_device_id btusb_table[] = {
/* Canyon CN-BTU1 with HID interfaces */
{ USB_DEVICE(0x0c10, 0x0000) },
+ /* Broadcom BCM2045 with the prod:vend ids not filled GRRR */
+ { USB_DEVICE(0x0000, 0x0000),
+ .driver_info = BTUSB_BCM2045 | BTUSB_BCM2045_0000_0000 },
+
/* Broadcom BCM20702A0 */
{ USB_DEVICE(0x413c, 0x8197) },
@@ -2887,6 +2892,16 @@ static int btusb_probe(struct usb_interface *intf,
if (id->driver_info == BTUSB_IGNORE)
return -ENODEV;
+ if (id->driver_info & BTUSB_BCM2045_0000_0000) {
+ struct usb_device *udev = interface_to_usbdev(intf);
+
+ /* Device with prod:vend id set to 0000:0000, check strings */
+ if (!udev->manufacturer || !udev->product ||
+ strcmp(udev->manufacturer, "Broadcom Corp") != 0 ||
+ strcmp(udev->product, "BCM2045A0") != 0)
+ return -ENODEV;
+ }
+
if (id->driver_info & BTUSB_ATH3012) {
struct usb_device *udev = interface_to_usbdev(intf);
--
2.13.0
--
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