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Bluetooth: Read Broadcom chip info for Apple Bluetooth devices

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For the Apple Bluetooth devices that are Broadcom based, it makes sense
to read the chip information. It is a single HCI command and might help
gathering more information about these devices.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2015-03-22 15:52:38 +01:00 committed by Johan Hedberg
parent baf880a968
commit 17b2772b8f
1 changed files with 37 additions and 1 deletions
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38
drivers/bluetooth/btusb.c
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@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@ -53,6 +54,7 @@ static struct usb_driver btusb_driver;
#define BTUSB_INTEL_NEW 0x2000
#define BTUSB_AMP 0x4000
#define BTUSB_QCA_ROME 0x8000
#define BTUSB_BCM_APPLE 0x10000
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
@ -62,7 +64,8 @@ static const struct usb_device_id btusb_table[] = {
{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
/* Apple-specific (Broadcom) devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
.driver_info = BTUSB_BCM_APPLE },
/* MediaTek MT76x0E */
{ USB_DEVICE(0x0e8d, 0x763f) },
@ -2634,6 +2637,34 @@ static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
return 0;
}
static int btusb_setup_bcm_apple(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
/* Read Verbose Config Version Info */
skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: BCM: Read Verbose Version failed (%d)",
hdev->name, err);
return err;
}
if (skb->len != 7) {
BT_ERR("%s: BCM: Read Verbose Version event length mismatch",
hdev->name);
kfree_skb(skb);
return -EIO;
}
BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
get_unaligned_le16(skb->data + 5));
kfree_skb(skb);
return 0;
}
static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
const bdaddr_t *bdaddr)
{
@ -3033,6 +3064,11 @@ static int btusb_probe(struct usb_interface *intf,
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
}
if (id->driver_info & BTUSB_BCM_APPLE) {
hdev->setup = btusb_setup_bcm_apple;
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
}
if (id->driver_info & BTUSB_INTEL) {
hdev->setup = btusb_setup_intel;
hdev->shutdown = btusb_shutdown_intel;