diff options
Diffstat (limited to 'drivers/bluetooth/btusb.c')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e97d036cde70..3970224b3b09 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2083,6 +2083,12 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) BT_INFO("%s: Found device firmware: %s", hdev->name, fwname); + /* Save the DDC file name for later use to apply once the firmware + * downloading is done. + */ + snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc", + le16_to_cpu(params->dev_revid)); + kfree_skb(skb); if (fw->size < 644) { @@ -2244,6 +2250,43 @@ done: clear_bit(BTUSB_BOOTLOADER, &data->flags); + /* Once the device is running in operational mode, it needs to apply + * the device configuration (DDC) parameters. + * + * The device can work without DDC parameters, so even if it fails + * to load the file, no need to fail the setup. + */ + err = request_firmware_direct(&fw, fwname, &hdev->dev); + if (err < 0) + return 0; + + BT_INFO("%s: Found Intel DDC parameters: %s", hdev->name, fwname); + + fw_ptr = fw->data; + + /* DDC file contains one or more DDC structure which has + * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2). + */ + while (fw->size > fw_ptr - fw->data) { + u8 cmd_plen = fw_ptr[0] + sizeof(u8); + + skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + BT_ERR("%s: Failed to send Intel_Write_DDC (%ld)", + hdev->name, PTR_ERR(skb)); + release_firmware(fw); + return PTR_ERR(skb); + } + + fw_ptr += cmd_plen; + kfree_skb(skb); + } + + release_firmware(fw); + + BT_INFO("%s: Applying Intel DDC parameters completed", hdev->name); + return 0; } |