diff options
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 155 |
1 files changed, 154 insertions, 1 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index f338b0c5a8de..8f579cd9bbaf 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -49,6 +49,7 @@ static struct usb_driver btusb_driver; #define BTUSB_WRONG_SCO_MTU 0x40 #define BTUSB_ATH3012 0x80 #define BTUSB_INTEL 0x100 +#define BTUSB_BCM_PATCHRAM 0x200 static const struct usb_device_id btusb_table[] = { /* Generic Bluetooth USB device */ @@ -111,7 +112,8 @@ static const struct usb_device_id btusb_table[] = { { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) }, /* Broadcom devices with vendor specific id */ - { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, + { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), + .driver_info = BTUSB_BCM_PATCHRAM }, /* Belkin F8065bf - Broadcom based */ { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) }, @@ -1380,6 +1382,154 @@ exit_mfg_deactivate: return 0; } +static int btusb_setup_bcm_patchram(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + struct usb_device *udev = data->udev; + char fw_name[64]; + const struct firmware *fw; + const u8 *fw_ptr; + size_t fw_size; + const struct hci_command_hdr *cmd; + const u8 *cmd_param; + u16 opcode; + struct sk_buff *skb; + struct hci_rp_read_local_version *ver; + long ret; + + snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd", + udev->product ? udev->product : "BCM", + le16_to_cpu(udev->descriptor.idVendor), + le16_to_cpu(udev->descriptor.idProduct)); + + ret = request_firmware(&fw, fw_name, &hdev->dev); + if (ret < 0) { + BT_INFO("%s: BCM: patch %s not found", hdev->name, + fw_name); + return 0; + } + + /* Reset */ + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret); + goto done; + } + kfree_skb(skb); + + /* Read Local Version Info */ + skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)", + hdev->name, ret); + goto done; + } + + if (skb->len != sizeof(*ver)) { + BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch", + hdev->name); + kfree_skb(skb); + ret = -EIO; + goto done; + } + + ver = (struct hci_rp_read_local_version *) skb->data; + BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x " + "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev, + ver->lmp_ver, ver->lmp_subver); + kfree_skb(skb); + + /* Start Download */ + skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: BCM: Download Minidrv command failed (%ld)", + hdev->name, ret); + goto reset_fw; + } + kfree_skb(skb); + + /* 50 msec delay after Download Minidrv completes */ + msleep(50); + + fw_ptr = fw->data; + fw_size = fw->size; + + while (fw_size >= sizeof(*cmd)) { + cmd = (struct hci_command_hdr *) fw_ptr; + fw_ptr += sizeof(*cmd); + fw_size -= sizeof(*cmd); + + if (fw_size < cmd->plen) { + BT_ERR("%s: BCM: patch %s is corrupted", + hdev->name, fw_name); + ret = -EINVAL; + goto reset_fw; + } + + cmd_param = fw_ptr; + fw_ptr += cmd->plen; + fw_size -= cmd->plen; + + opcode = le16_to_cpu(cmd->opcode); + + skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: BCM: patch command %04x failed (%ld)", + hdev->name, opcode, ret); + goto reset_fw; + } + kfree_skb(skb); + } + + /* 250 msec delay after Launch Ram completes */ + msleep(250); + +reset_fw: + /* Reset */ + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret); + goto done; + } + kfree_skb(skb); + + /* Read Local Version Info */ + skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)", + hdev->name, ret); + goto done; + } + + if (skb->len != sizeof(*ver)) { + BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch", + hdev->name); + kfree_skb(skb); + ret = -EIO; + goto done; + } + + ver = (struct hci_rp_read_local_version *) skb->data; + BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x " + "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev, + ver->lmp_ver, ver->lmp_subver); + kfree_skb(skb); + +done: + release_firmware(fw); + + return ret; +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -1485,6 +1635,9 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_BCM92035) hdev->setup = btusb_setup_bcm92035; + if (id->driver_info & BTUSB_BCM_PATCHRAM) + hdev->setup = btusb_setup_bcm_patchram; + if (id->driver_info & BTUSB_INTEL) { usb_enable_autosuspend(data->udev); hdev->setup = btusb_setup_intel; |