Return-path: Received: from mail-oa0-f42.google.com ([209.85.219.42]:52213 "EHLO mail-oa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936502Ab3DIA6Q (ORCPT ); Mon, 8 Apr 2013 20:58:16 -0400 From: Larry Finger To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, Larry Finger , netdev@vger.kernel.org, marcel@holtmann.org, gustavo@padovan.org, johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org, champion_chen@realsil.com.cn Subject: [RFC/RFT PATCH 2/2] rtk_btusb: A new driver for the Bluetooth portion of the Realtek RTL8723AE chip Date: Mon, 8 Apr 2013 19:57:48 -0500 Message-Id: <1365469068-4548-3-git-send-email-Larry.Finger@lwfinger.net> (sfid-20130409_025835_067355_523A5BE6) In-Reply-To: <1365469068-4548-1-git-send-email-Larry.Finger@lwfinger.net> References: <1365469068-4548-1-git-send-email-Larry.Finger@lwfinger.net> Sender: linux-wireless-owner@vger.kernel.org List-ID: This driver is similar to btusb, and uses as much of that code as possible. Those parts that are unique are provided here. Signed-off-by: Larry Finger --- drivers/bluetooth/Kconfig | 10 + drivers/bluetooth/Makefile | 1 + drivers/bluetooth/rtk_btusb.c | 974 ++++++++++++++++++++++++++++++++++++++++++ drivers/bluetooth/rtk_btusb.h | 102 +++++ 4 files changed, 1087 insertions(+) create mode 100644 drivers/bluetooth/rtk_btusb.c create mode 100644 drivers/bluetooth/rtk_btusb.h diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index fdfd61a..11a9e80 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -242,4 +242,14 @@ config BT_WILINK Say Y here to compile support for Texas Instrument's WiLink7 driver into the kernel or say M to compile it as module. + +config BT_RTKUSB + tristate "Realtek BT driver for RTL8723AE" + select FW_LOADER + help + This enables the Bluetooth driver for the Realtek RTL8723AE Wifi/BT + combo device. + + Say Y here to compile support for these devices into the kernel + or say M to build it as a module. endmenu diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index 4afae20..167ccc0 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_BT_ATH3K) += ath3k.o obj-$(CONFIG_BT_MRVL) += btmrvl.o obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o obj-$(CONFIG_BT_WILINK) += btwilink.o +obj-$(CONFIG_BT_RTKUSB) += rtk_btusb.o btmrvl-y := btmrvl_main.o btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o diff --git a/drivers/bluetooth/rtk_btusb.c b/drivers/bluetooth/rtk_btusb.c new file mode 100644 index 0000000..9a12855 --- /dev/null +++ b/drivers/bluetooth/rtk_btusb.c @@ -0,0 +1,974 @@ +/* + * + * Realtek Bluetooth USB driver + * + * Copyright (C) 2012-2013 Edward Bian + * + * Parts of this routine are copied and modified from btusb, the + * Generic Bluetooth USB driver. In addition, several of the routines + * in btusb are used directly. The btusb code is + * Copyright (C) 2005-2008 Marcel Holtmann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "btusb.h" +#include "rtk_btusb.h" + +#define VERSION "0.8" + +static struct usb_driver btusb_driver; + +static struct patch_info patch_table[] = { + {0, 0x1200, "rtl_bt/rtl8723a.bin", "rtk8723_bt_config", NULL, 0} +}; + +static LIST_HEAD(dev_data_list); + +/*******************************/ + +static struct usb_device_id btusb_table[] = { + {USB_DEVICE(0x0bda, 0x8723)}, + { } +}; + +/*******************************/ + +MODULE_DEVICE_TABLE(usb, btusb_table); + +static int send_hci_cmd(struct xchange_data *xdata) +{ + int ret_val; + + ret_val = usb_control_msg( + xdata->dev_entry->udev, xdata->pipe_out, + 0, USB_TYPE_CLASS, 0, 0, + (void *)(xdata->send_pkt), + xdata->pkt_len, MSG_TO); + + return ret_val; +} + +static int rcv_hci_evt(struct xchange_data *xdata) +{ + int ret_len, ret_val; + int i; + + while (1) { + for (i = 0; i < 5; i++) { + /* Try to send USB interrupt message 5 times. */ + ret_val = usb_interrupt_msg( + xdata->dev_entry->udev, xdata->pipe_in, + (void *)(xdata->rcv_pkt), PKT_LEN, + &ret_len, MSG_TO); + if (ret_val >= 0) + break; + } + if (ret_val < 0) + return ret_val; + + if (CMD_CMP_EVT == xdata->evt_hdr->evt) { + if (xdata->cmd_hdr->opcode == xdata->cmd_cmp->opcode) + return ret_len; + } + } +} + +static int download_data(struct xchange_data *xdata) +{ + struct download_cp *cmd_para; + struct download_rp *evt_para; + uint8_t *pcur; + int pkt_len, frag_num, frag_len; + int i, ret_val; + + cmd_para = (struct download_cp *)xdata->req_para; + evt_para = (struct download_rp *)xdata->rsp_para; + pcur = xdata->fw_data; + pkt_len = CMD_HDR_LEN + sizeof(struct download_cp); + frag_num = xdata->fw_len / PATCH_SEG_MAX + 1; + frag_len = PATCH_SEG_MAX; + + for (i = 0; i < frag_num; i++) { + cmd_para->index = i; + if (i == (frag_num - 1)) { + cmd_para->index |= DATA_END; + frag_len = xdata->fw_len % PATCH_SEG_MAX; + pkt_len -= (PATCH_SEG_MAX - frag_len); + } + xdata->cmd_hdr->opcode = cpu_to_le16(DOWNLOAD_OPCODE); + xdata->cmd_hdr->plen = sizeof(uint8_t) + frag_len; + xdata->pkt_len = pkt_len; + memcpy(cmd_para->data, pcur, frag_len); + + ret_val = send_hci_cmd(xdata); + if (ret_val < 0) + return ret_val; + + ret_val = rcv_hci_evt(xdata); + if (ret_val < 0) + return ret_val; + if (0 != evt_para->status) + return -1; + + pcur += PATCH_SEG_MAX; + } + + return xdata->fw_len; +} + +static struct dev_data *dev_data_find(struct usb_interface *intf) +{ + struct dev_data *dev_entry; + + list_for_each_entry(dev_entry, &dev_data_list, list_node) { + if (dev_entry->intf == intf) + return dev_entry; + } + + return NULL; +} + +static void init_xdata(struct xchange_data *xdata, struct dev_data *dev_entry) +{ + memset(xdata, 0, sizeof(struct xchange_data)); + xdata->dev_entry = dev_entry; + xdata->pipe_in = usb_rcvintpipe(dev_entry->udev, INTR_EP); + xdata->pipe_out = usb_sndctrlpipe(dev_entry->udev, CTRL_EP); + xdata->cmd_hdr = (struct hci_command_hdr *)(xdata->send_pkt); + xdata->evt_hdr = (struct hci_event_hdr *)(xdata->rcv_pkt); + xdata->cmd_cmp = (struct hci_ev_cmd_complete *)(xdata->rcv_pkt + + EVT_HDR_LEN); + xdata->req_para = xdata->send_pkt + CMD_HDR_LEN; + xdata->rsp_para = xdata->rcv_pkt + EVT_HDR_LEN + CMD_CMP_LEN; +} + +static int check_fw_version(struct xchange_data *xdata) +{ + struct hci_rp_read_local_version *read_ver_rsp; + struct patch_info *patch_entry; + int ret_val; + + xdata->cmd_hdr->opcode = cpu_to_le16(HCI_OP_READ_LOCAL_VERSION); + xdata->cmd_hdr->plen = 0; + xdata->pkt_len = CMD_HDR_LEN; + + ret_val = send_hci_cmd(xdata); + if (ret_val < 0) + goto version_end; + + ret_val = rcv_hci_evt(xdata); + if (ret_val < 0) + goto version_end; + + patch_entry = xdata->dev_entry->patch_entry; + read_ver_rsp = (struct hci_rp_read_local_version *)(xdata->rsp_para); + BT_DBG("check_fw_version : read_ver_rsp->lmp_subver = 0x%x", + le16_to_cpu(read_ver_rsp->lmp_subver)); + if (patch_entry->lmp_sub != le16_to_cpu(read_ver_rsp->lmp_subver)) + return 1; + + ret_val = 0; +version_end: + return ret_val; +} + +static void bt_fw_cb(const struct firmware *firmware, void *context) +{ + struct dev_data *dev_entry = context; + + dev_entry->fw = firmware; + if (!firmware) + pr_err("In callback routine, firmware file not available\n"); + complete(&dev_entry->firmware_loading_complete); +} + +static int load_firmware(struct dev_data *dev_entry, uint8_t **buff) +{ +#if LOAD_CONFIG + const struct firmware *fw; +#endif + struct usb_device *udev; + struct patch_info *patch_entry; + char *fw_name; + int fw_len = 0, ret_val; + + udev = dev_entry->udev; + init_completion(&dev_entry->firmware_loading_complete); + patch_entry = dev_entry->patch_entry; + fw_name = patch_entry->patch_name; + BT_DBG("Reading firmware file %s", fw_name); + ret_val = request_firmware_nowait(THIS_MODULE, 1, fw_name, &udev->dev, + GFP_KERNEL, dev_entry, bt_fw_cb); + if (ret_val < 0) + goto fw_fail; + + wait_for_completion(&dev_entry->firmware_loading_complete); + if (!dev_entry->fw) + goto fw_fail; + *buff = kzalloc(dev_entry->fw->size, GFP_KERNEL); + if (NULL == *buff) + goto alloc_fail; + memcpy(*buff, dev_entry->fw->data, dev_entry->fw->size); + fw_len = dev_entry->fw->size; + +#if LOAD_CONFIG + release_firmware(dev_entry->fw); + fw_name = patch_entry->config_name; + ret_val = request_firmware(&fw, fw_name, &udev->dev); + if (ret_val < 0) { + fw_len = 0; + kfree(*buff); + *buff = NULL; + goto fw_fail; + } + + *buff = krealloc(*buff, fw_len + fw->size, GFP_KERNEL); + if (NULL == *buff) { + fw_len = 0; + release_firmware(fw); + goto fw_fail; + } + memcpy(*buff + fw_len, fw->data, fw->size); + fw_len += fw->size; +#endif + +alloc_fail: + release_firmware(dev_entry->fw); +fw_fail: + return fw_len; +} + +static int get_firmware(struct xchange_data *xdata) +{ + struct dev_data *dev_entry; + struct patch_info *patch_entry; + + dev_entry = xdata->dev_entry; + patch_entry = dev_entry->patch_entry; + if (patch_entry->fw_len > 0) { + xdata->fw_data = kzalloc(patch_entry->fw_len, GFP_KERNEL); + if (NULL == xdata->fw_data) + return -ENOMEM; + memcpy(xdata->fw_data, patch_entry->fw_cache, + patch_entry->fw_len); + xdata->fw_len = patch_entry->fw_len; + } else { + xdata->fw_len = load_firmware(dev_entry, &xdata->fw_data); + if (xdata->fw_len <= 0) + return -1; + } + + return 0; +} + +static int download_patch(struct usb_interface *intf) +{ + struct dev_data *dev_entry; + uint8_t *fw_buf; + int ret_val; + + BT_DBG("download_patch start"); + dev_entry = dev_data_find(intf); + if (NULL == dev_entry) { + ret_val = -1; + BT_DBG("NULL == dev_entry"); + goto patch_end; + } + + init_xdata(&dev_entry->xdata, dev_entry); + ret_val = check_fw_version(&dev_entry->xdata); + if (ret_val != 0) + goto patch_end; + + ret_val = get_firmware(&dev_entry->xdata); + if (ret_val < 0) { + BT_DBG("get_firmware failed!"); + goto patch_end; + } + fw_buf = dev_entry->xdata.fw_data; + + ret_val = download_data(&dev_entry->xdata); + if (ret_val < 0) { + BT_DBG("download_data failed!"); + goto patch_fail; + } + + ret_val = check_fw_version(&dev_entry->xdata); + if (ret_val <= 0) { + ret_val = -1; + goto patch_fail; + } + + ret_val = 0; +patch_fail: + kfree(fw_buf); +patch_end: + BT_DBG("Rtk patch end %d", ret_val); + return ret_val; +} + +static int btusb_open(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + int err; + + BT_DBG("%s", hdev->name); + + err = usb_autopm_get_interface(data->intf); + if (err < 0) + return err; + + data->intf->needs_remote_wakeup = 1; + BT_DBG("%s start pm_usage_cnt(0x%x)", __func__, + atomic_read(&(data->intf->pm_usage_cnt))); + + /*******************************/ + if (0 == atomic_read(&hdev->promisc)) { + BT_DBG("btusb_open hdev->promisc == 0"); + err = -1; + } + err = download_patch(data->intf); + if (err < 0) + goto failed; + /*******************************/ + + if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) + goto done; + + if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) + goto done; + + err = btusb_submit_intr_urb(hdev, GFP_KERNEL); + if (err < 0) + goto failed; + + err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); + if (err < 0) { + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_kill_anchored_urbs(&data->intr_anchor); + goto failed; + } + + set_bit(BTUSB_BULK_RUNNING, &data->flags); + btusb_submit_bulk_urb(hdev, GFP_KERNEL); + +done: + usb_autopm_put_interface(data->intf); + BT_DBG("%s end pm_usage_cnt(0x%x)", __func__, + atomic_read(&(data->intf->pm_usage_cnt))); + + return 0; + +failed: + clear_bit(BTUSB_INTR_RUNNING, &data->flags); + clear_bit(HCI_RUNNING, &hdev->flags); + usb_autopm_put_interface(data->intf); + BT_DBG("%s failed pm_usage_cnt(0x%x)", __func__, + atomic_read(&(data->intf->pm_usage_cnt))); + return err; +} + +static int btusb_close(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + int i, err; + + if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) + return 0; + + BT_DBG("btusb_close"); + /*******************************/ + for (i = 0; i < NUM_REASSEMBLY; i++) { + if (hdev->reassembly[i]) { + kfree_skb(hdev->reassembly[i]); + hdev->reassembly[i] = NULL; + BT_DBG("%s free ressembly i =%d", __func__, i); + } + } + /*******************************/ + cancel_work_sync(&data->work); + cancel_work_sync(&data->waker); + + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + clear_bit(BTUSB_BULK_RUNNING, &data->flags); + clear_bit(BTUSB_INTR_RUNNING, &data->flags); + + btusb_stop_traffic(data); + err = usb_autopm_get_interface(data->intf); + if (err < 0) + goto failed; + + data->intf->needs_remote_wakeup = 0; + usb_autopm_put_interface(data->intf); + +failed: + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_scuttle_anchored_urbs(&data->deferred); + return 0; +} + +static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + struct usb_interface *intf = data->isoc; + struct usb_endpoint_descriptor *ep_desc; + int i, err; + + if (!data->isoc) + return -ENODEV; + + err = usb_set_interface(data->udev, 1, altsetting); + if (err < 0) { + BT_ERR("%s setting interface failed (%d)", hdev->name, -err); + return err; + } + + data->isoc_altsetting = altsetting; + + data->isoc_tx_ep = NULL; + data->isoc_rx_ep = NULL; + + for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { + ep_desc = &intf->cur_altsetting->endpoint[i].desc; + + if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { + data->isoc_tx_ep = ep_desc; + continue; + } + + if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { + data->isoc_rx_ep = ep_desc; + continue; + } + } + + if (!data->isoc_tx_ep || !data->isoc_rx_ep) { + BT_ERR("%s invalid SCO descriptors", hdev->name); + return -ENODEV; + } + + return 0; +} + +static void btusb_work(struct work_struct *work) +{ + struct btusb_data *data = container_of(work, struct btusb_data, work); + struct hci_dev *hdev = data->hdev; + int err; + + if (hdev->conn_hash.sco_num > 0) { + if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { + err = usb_autopm_get_interface(data->isoc ? data->isoc : + data->intf); + if (err < 0) { + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + /* Delay added by Realtek */ + mdelay(URB_CANCELING_DELAY_MS); + usb_kill_anchored_urbs(&data->isoc_anchor); + return; + } + + set_bit(BTUSB_DID_ISO_RESUME, &data->flags); + } + if (data->isoc_altsetting != 2) { + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_kill_anchored_urbs(&data->isoc_anchor); + + if (__set_isoc_interface(hdev, 2) < 0) + return; + } + + if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { + if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + else + btusb_submit_isoc_urb(hdev, GFP_KERNEL); + } + } else { + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_kill_anchored_urbs(&data->isoc_anchor); + + __set_isoc_interface(hdev, 0); + if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) + usb_autopm_put_interface(data->isoc ? data->isoc : + data->intf); + } +} + +static struct patch_info *get_patch_entry(struct usb_device *udev) +{ + struct patch_info *patch_entry; + uint16_t pid; + + patch_entry = patch_table; + pid = le16_to_cpu(udev->descriptor.idProduct); + while (pid != patch_entry->prod_id) { + if (0 == patch_entry->prod_id) + break; + patch_entry++; + } + + return patch_entry; +} + +static int rtkbt_pm_notify(struct notifier_block *notifier, ulong pm_event, + void *unused) +{ + struct dev_data *dev_entry; + struct patch_info *patch_entry; + struct usb_device *udev; + + dev_entry = container_of(notifier, struct dev_data, pm_notifier); + patch_entry = dev_entry->patch_entry; + udev = dev_entry->udev; + BT_DBG("rtkbt_pm_notify pm_event =%ld", pm_event); + switch (pm_event) { + case PM_SUSPEND_PREPARE: + case PM_HIBERNATION_PREPARE: + patch_entry->fw_len = load_firmware(dev_entry, + &patch_entry->fw_cache); + if (patch_entry->fw_len <= 0) { + BT_DBG("rtkbt_pm_notify return NOTIFY_BAD"); + return NOTIFY_BAD; + } + + if (!device_may_wakeup(&udev->dev)) { + dev_entry->intf->needs_binding = 1; + BT_DBG("remote wakeup not support, set intf->needs_binding = 1"); + } + break; + case PM_POST_SUSPEND: + case PM_POST_HIBERNATION: + case PM_POST_RESTORE: + if (patch_entry->fw_len > 0) { + kfree(patch_entry->fw_cache); + patch_entry->fw_cache = NULL; + patch_entry->fw_len = 0; + } +#if BTUSB_RPM + usb_disable_autosuspend(udev); + usb_enable_autosuspend(udev); + pm_runtime_set_autosuspend_delay(&(udev->dev), 2000); +#endif + break; + + default: + break; + } + + return NOTIFY_DONE; +} + +static int patch_add(struct usb_interface *intf) +{ + struct dev_data *dev_entry; + struct usb_device *udev; + + BT_DBG("patch_add"); + dev_entry = dev_data_find(intf); + if (NULL != dev_entry) + return -1; + + udev = interface_to_usbdev(intf); +#if BTUSB_RPM + BT_DBG("auto suspend is enabled"); + usb_enable_autosuspend(udev); + pm_runtime_set_autosuspend_delay(&(udev->dev), 2000); +#endif + + dev_entry = kzalloc(sizeof(struct dev_data), GFP_KERNEL); + dev_entry->intf = intf; + dev_entry->udev = udev; + dev_entry->pm_notifier.notifier_call = rtkbt_pm_notify; + dev_entry->patch_entry = get_patch_entry(udev); + list_add(&dev_entry->list_node, &dev_data_list); + register_pm_notifier(&dev_entry->pm_notifier); + + return 0; +} + +static int btusb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_endpoint_descriptor *ep_desc; + struct btusb_data *data; + struct hci_dev *hdev; + int i, err, flag1, flag2; + struct usb_device *udev; + udev = interface_to_usbdev(intf); + + BT_DBG("Realtek Bluetooth USB driver ver %s", VERSION); + + /* interface numbers are hardcoded in the spec */ + if (intf->cur_altsetting->desc.bInterfaceNumber != 0) + return -ENODEV; + + /*******************************/ + flag1 = device_can_wakeup(&udev->dev); + flag2 = device_may_wakeup(&udev->dev); + BT_DBG("btusb_probe 1 ========== can_wakeup =%x flag2 =%x", + flag1, flag2); + device_wakeup_disable(&udev->dev); + flag1 = device_can_wakeup(&udev->dev); + flag2 = device_may_wakeup(&udev->dev); + BT_DBG("wakeup_disable ========== can_wakeup =%x flag2 =%x", + flag1, flag2); + err = patch_add(intf); + if (err < 0) + return -1; + /*******************************/ + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + + for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { + ep_desc = &intf->cur_altsetting->endpoint[i].desc; + + if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { + data->intr_ep = ep_desc; + continue; + } + + if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { + data->bulk_tx_ep = ep_desc; + continue; + } + + if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { + data->bulk_rx_ep = ep_desc; + continue; + } + } + + if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { + kfree(data); + return -ENODEV; + } + + data->cmdreq_type = USB_TYPE_CLASS; + + data->udev = interface_to_usbdev(intf); + data->intf = intf; + + spin_lock_init(&data->lock); + + INIT_WORK(&data->work, btusb_work); + INIT_WORK(&data->waker, btusb_waker); + spin_lock_init(&data->txlock); + + init_usb_anchor(&data->tx_anchor); + init_usb_anchor(&data->intr_anchor); + init_usb_anchor(&data->bulk_anchor); + init_usb_anchor(&data->isoc_anchor); + init_usb_anchor(&data->deferred); + + hdev = hci_alloc_dev(); + if (!hdev) { + kfree(data); + return -ENOMEM; + } + + HDEV_BUS = HCI_USB; + + data->hdev = hdev; + + SET_HCIDEV_DEV(hdev, &intf->dev); + + hdev->open = btusb_open; + hdev->close = btusb_close; + hdev->flush = btusb_flush; + hdev->send = btusb_send_frame; + hdev->notify = btusb_notify; + + + hci_set_drvdata(hdev, data); + + /* Interface numbers are hardcoded in the specification */ + data->isoc = usb_ifnum_to_if(data->udev, 1); + + if (data->isoc) { + err = usb_driver_claim_interface(&btusb_driver, + data->isoc, data); + if (err < 0) { + hci_free_dev(hdev); + kfree(data); + return err; + } + } + + err = hci_register_dev(hdev); + if (err < 0) { + hci_free_dev(hdev); + kfree(data); + return err; + } + + usb_set_intfdata(intf, data); + + return 0; +} + +static void patch_remove(struct usb_interface *intf) +{ + struct dev_data *dev_entry; + struct usb_device *udev; + + udev = interface_to_usbdev(intf); +#if BTUSB_RPM + usb_disable_autosuspend(udev); +#endif + + dev_entry = dev_data_find(intf); + if (NULL == dev_entry) + return; + + BT_DBG("patch_remove"); + list_del(&dev_entry->list_node); + unregister_pm_notifier(&dev_entry->pm_notifier); + kfree(dev_entry); +} + +static void btusb_disconnect(struct usb_interface *intf) +{ + struct btusb_data *data = usb_get_intfdata(intf); + struct hci_dev *hdev; + struct usb_device *udev; + udev = interface_to_usbdev(intf); + + if (intf->cur_altsetting->desc.bInterfaceNumber != 0) + return; + + if (!data) + return; + + BT_DBG("btusb_disconnect"); + /*******************************/ + patch_remove(intf); + /*******************************/ + + hdev = data->hdev; + + usb_set_intfdata(data->intf, NULL); + + if (data->isoc) + usb_set_intfdata(data->isoc, NULL); + + hci_unregister_dev(hdev); + + if (intf == data->isoc) + usb_driver_release_interface(&btusb_driver, data->intf); + else if (data->isoc) + usb_driver_release_interface(&btusb_driver, data->isoc); + + hci_free_dev(hdev); + kfree(data); +} + +#ifdef CONFIG_PM +static int set_btoff(struct usb_interface *intf) +{ + struct dev_data *dev_entry; + int ret_val; + + BT_DBG("set_btoff"); + dev_entry = dev_data_find(intf); + if (NULL == dev_entry) + return -1; + + init_xdata(&dev_entry->xdata, dev_entry); + dev_entry->xdata.cmd_hdr->opcode = cpu_to_le16(BTOFF_OPCODE); + dev_entry->xdata.cmd_hdr->plen = 1; + dev_entry->xdata.pkt_len = CMD_HDR_LEN + 1; + dev_entry->xdata.send_pkt[CMD_HDR_LEN] = 1; + + ret_val = send_hci_cmd(&dev_entry->xdata); + if (ret_val < 0) + return ret_val; + + ret_val = rcv_hci_evt(&dev_entry->xdata); + if (ret_val < 0) + return ret_val; + + BT_DBG("set_btoff done"); + return 0; +} + +static int btusb_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct btusb_data *data = usb_get_intfdata(intf); + + if (intf->cur_altsetting->desc.bInterfaceNumber != 0) + return 0; + + /*******************************/ + BT_DBG("btusb_suspend message.event = 0x%x, data->suspend_count =%d", + message.event, data->suspend_count); + if (!test_bit(HCI_RUNNING, &data->hdev->flags)) { + BT_DBG("btusb_suspend-----bt is off"); + set_btoff(data->intf); + } + /*******************************/ + + if (data->suspend_count++) + return 0; + + spin_lock_irq(&data->txlock); + if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) { + set_bit(BTUSB_SUSPENDING, &data->flags); + spin_unlock_irq(&data->txlock); + } else { + spin_unlock_irq(&data->txlock); + data->suspend_count--; + return -EBUSY; + } + + cancel_work_sync(&data->work); + + btusb_stop_traffic(data); + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_kill_anchored_urbs(&data->tx_anchor); + + return 0; +} + +static void play_deferred(struct btusb_data *data) +{ + struct urb *urb; + int err; + + while ((urb = usb_get_from_anchor(&data->deferred))) { + + /************************************/ + usb_anchor_urb(urb, &data->tx_anchor); + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err < 0) { + BT_ERR("play_deferred urb %p submission failed", urb); + kfree(urb->setup_packet); + usb_unanchor_urb(urb); + } else { + usb_mark_last_busy(data->udev); + } + usb_free_urb(urb); + /************************************/ + data->tx_in_flight++; + } + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_scuttle_anchored_urbs(&data->deferred); +} + +static int btusb_resume(struct usb_interface *intf) +{ + struct btusb_data *data = usb_get_intfdata(intf); + struct hci_dev *hdev = data->hdev; + int err = 0; + + if (intf->cur_altsetting->desc.bInterfaceNumber != 0) + return 0; + + + /*******************************/ + BT_DBG("btusb_resume data->suspend_count =%d", data->suspend_count); + + if (!test_bit(HCI_RUNNING, &hdev->flags)) { + BT_DBG("btusb_resume-----bt is off, download patch"); + download_patch(intf); + } else { + BT_DBG("btusb_resume,----bt is on"); + } + /*******************************/ + if (--data->suspend_count) + return 0; + + if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { + err = btusb_submit_intr_urb(hdev, GFP_NOIO); + if (err < 0) { + clear_bit(BTUSB_INTR_RUNNING, &data->flags); + goto failed; + } + } + + if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { + err = btusb_submit_bulk_urb(hdev, GFP_NOIO); + if (err < 0) { + clear_bit(BTUSB_BULK_RUNNING, &data->flags); + goto failed; + } + + btusb_submit_bulk_urb(hdev, GFP_NOIO); + } + + if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { + if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) + clear_bit(BTUSB_ISOC_RUNNING, &data->flags); + else + btusb_submit_isoc_urb(hdev, GFP_NOIO); + } + + spin_lock_irq(&data->txlock); + play_deferred(data); + clear_bit(BTUSB_SUSPENDING, &data->flags); + spin_unlock_irq(&data->txlock); + schedule_work(&data->work); + + return 0; + +failed: + mdelay(URB_CANCELING_DELAY_MS); /* Added by Realtek */ + usb_scuttle_anchored_urbs(&data->deferred); +/* done: */ + spin_lock_irq(&data->txlock); + clear_bit(BTUSB_SUSPENDING, &data->flags); + spin_unlock_irq(&data->txlock); + + return err; +} +#endif + +static struct usb_driver btusb_driver = { + .name = "rtk_btusb", + .probe = btusb_probe, + .disconnect = btusb_disconnect, +#ifdef CONFIG_PM + .suspend = btusb_suspend, + .resume = btusb_resume, +#endif + .id_table = btusb_table, + .supports_autosuspend = 1, +}; + + +module_usb_driver(btusb_driver); + +MODULE_AUTHOR("Edward Bian "); +MODULE_DESCRIPTION("Realtek Bluetooth USB driver ver " VERSION); +MODULE_VERSION(VERSION); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("rtl_bt/rtl8723a.bin"); diff --git a/drivers/bluetooth/rtk_btusb.h b/drivers/bluetooth/rtk_btusb.h new file mode 100644 index 0000000..0c55dd6 --- /dev/null +++ b/drivers/bluetooth/rtk_btusb.h @@ -0,0 +1,102 @@ +/* + * + * Realtek Bluetooth USB driver + * + * Copyright (C) 2012-2013 Edward Bian + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef RTK_BTUSB_H +#define RTK_BTUSB_H + +#define HDEV_BUS (hdev->bus) +#define USB_RPM 1 + +#define BTUSB_RPM 0 /*1 SS enable; 0 SS disable */ +#define LOAD_CONFIG 0 +#define URB_CANCELING_DELAY_MS 10 /* Added by Realtek */ + +#define BTUSB_MAX_ISOC_FRAMES 10 +#define BTUSB_INTR_RUNNING 0 +#define BTUSB_BULK_RUNNING 1 +#define BTUSB_ISOC_RUNNING 2 +#define BTUSB_SUSPENDING 3 +#define BTUSB_DID_ISO_RESUME 4 + +#define CMD_CMP_EVT 0x0e +#define PKT_LEN 300 +#define MSG_TO 1000 +#define PATCH_SEG_MAX 252 +#define DATA_END 0x80 +#define DOWNLOAD_OPCODE 0xfc20 +#define BTOFF_OPCODE 0xfc28 +#define CMD_HDR_LEN sizeof(struct hci_command_hdr) +#define EVT_HDR_LEN sizeof(struct hci_event_hdr) +#define CMD_CMP_LEN sizeof(struct hci_ev_cmd_complete) + +enum rtk_endpoit { + CTRL_EP = 0, + INTR_EP = 1, + BULK_EP = 2, + ISOC_EP = 3 +}; + +struct patch_info { + uint16_t prod_id; + uint16_t lmp_sub; + char *patch_name; + char *config_name; + uint8_t *fw_cache; + int fw_len; +}; + +struct xchange_data { + struct dev_data *dev_entry; + int pipe_in, pipe_out; + uint8_t send_pkt[PKT_LEN]; + uint8_t rcv_pkt[PKT_LEN]; + struct hci_command_hdr *cmd_hdr; + struct hci_event_hdr *evt_hdr; + struct hci_ev_cmd_complete *cmd_cmp; + uint8_t *req_para, *rsp_para; + uint8_t *fw_data; + int pkt_len, fw_len; +}; + +struct dev_data { + struct list_head list_node; + struct usb_interface *intf; + struct usb_device *udev; + struct notifier_block pm_notifier; + struct patch_info *patch_entry; + struct xchange_data xdata; + struct completion firmware_loading_complete; + const struct firmware *fw; +}; + +struct download_cp { + uint8_t index; + uint8_t data[PATCH_SEG_MAX]; +} __packed; + +struct download_rp { + uint8_t status; + uint8_t index; +} __packed; + +#endif -- 1.8.1.4