Bluetooth: Read Broadcom chip info for Apple Bluetooth devices
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>
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@ -24,6 +24,7 @@
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include <asm/unaligned.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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@ -53,6 +54,7 @@ static struct usb_driver btusb_driver;
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#define BTUSB_INTEL_NEW 0x2000
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#define BTUSB_AMP 0x4000
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#define BTUSB_QCA_ROME 0x8000
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#define BTUSB_BCM_APPLE 0x10000
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static const struct usb_device_id btusb_table[] = {
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/* Generic Bluetooth USB device */
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@ -62,7 +64,8 @@ static const struct usb_device_id btusb_table[] = {
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{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
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/* Apple-specific (Broadcom) devices */
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{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
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{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
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.driver_info = BTUSB_BCM_APPLE },
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/* MediaTek MT76x0E */
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{ USB_DEVICE(0x0e8d, 0x763f) },
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@ -2634,6 +2637,34 @@ static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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return 0;
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}
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static int btusb_setup_bcm_apple(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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int err;
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/* Read Verbose Config Version Info */
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skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Read Verbose Version failed (%d)",
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hdev->name, err);
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return err;
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}
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if (skb->len != 7) {
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BT_ERR("%s: BCM: Read Verbose Version event length mismatch",
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hdev->name);
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kfree_skb(skb);
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return -EIO;
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}
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BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
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get_unaligned_le16(skb->data + 5));
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kfree_skb(skb);
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return 0;
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}
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static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
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const bdaddr_t *bdaddr)
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{
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@ -3033,6 +3064,11 @@ static int btusb_probe(struct usb_interface *intf,
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set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
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}
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if (id->driver_info & BTUSB_BCM_APPLE) {
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hdev->setup = btusb_setup_bcm_apple;
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set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
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}
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if (id->driver_info & BTUSB_INTEL) {
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hdev->setup = btusb_setup_intel;
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hdev->shutdown = btusb_shutdown_intel;
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