import rtk_btusb kernel driver

* from https://github.com/BPI-SINOVOIP/BPI-S905X3-Android9 @ 5f6b6d7773ff9d07001030b8e797673a2f64e9a9 (hardware\amlogic\bluetooth\realtek\rtk_btusb)

Change-Id: Id41605a3d7c02d911ad649f19b0b9924c64e184a

diff --git a/Kconfig b/Kconfig
new file mode 100644 (file)
index 0000000..fadaad1
--- /dev/null
+++ b/Kconfig
@@ -0,0 +1,275 @@
+
+menu "Bluetooth device drivers"
+       depends on BT
+
+config BT_HCISMD
+       tristate "HCI SMD driver"
+       help
+         Bluetooth HCI SMD driver.
+          This driver is required if you want to use Bluetoth device with
+         SMD interface.
+
+         Say Y here to compile support for Bluetooth USB devices into the
+          kernel or say M to compile is as a module (hci_smd).
+
+config BT_RTKBTUSB
+    tristate "RTK HCI USB driver"
+    depends on USB
+    help
+       RTK Bluetooth HCI USB driver
+
+config BT_HCIBTUSB
+       tristate "HCI USB driver"
+       depends on USB
+       help
+         Bluetooth HCI USB driver.
+         This driver is required if you want to use Bluetooth devices with
+         USB interface.
+
+         Say Y here to compile support for Bluetooth USB devices into the
+         kernel or say M to compile it as module (btusb).
+
+config BT_HCIBTSDIO
+       tristate "HCI SDIO driver"
+       depends on MMC
+       help
+         Bluetooth HCI SDIO driver.
+         This driver is required if you want to use Bluetooth device with
+         SDIO interface.
+
+         Say Y here to compile support for Bluetooth SDIO devices into the
+         kernel or say M to compile it as module (btsdio).
+
+config BT_HCIUART
+       tristate "HCI UART driver"
+       help
+         Bluetooth HCI UART driver.
+         This driver is required if you want to use Bluetooth devices with
+         serial port interface. You will also need this driver if you have 
+         UART based Bluetooth PCMCIA and CF devices like Xircom Credit Card 
+         adapter and BrainBoxes Bluetooth PC Card.
+
+         Say Y here to compile support for Bluetooth UART devices into the
+         kernel or say M to compile it as module (hci_uart).
+
+config BT_HCIUART_H4
+       bool "UART (H4) protocol support"
+       depends on BT_HCIUART
+       help
+         UART (H4) is serial protocol for communication between Bluetooth 
+         device and host. This protocol is required for most Bluetooth devices 
+         with UART interface, including PCMCIA and CF cards. 
+
+         Say Y here to compile support for HCI UART (H4) protocol.
+
+config BT_HCIUART_BCSP
+       bool "BCSP protocol support"
+       depends on BT_HCIUART
+       select BITREVERSE
+       help
+         BCSP (BlueCore Serial Protocol) is serial protocol for communication 
+         between Bluetooth device and host. This protocol is required for non
+         USB Bluetooth devices based on CSR BlueCore chip, including PCMCIA and
+         CF cards.
+
+         Say Y here to compile support for HCI BCSP protocol.
+
+config BT_HCIUART_ATH3K
+       bool "Atheros AR300x serial support"
+       depends on BT_HCIUART
+       help
+         HCIATH3K (HCI Atheros AR300x) is a serial protocol for
+         communication between host and Atheros AR300x Bluetooth devices.
+         This protocol enables AR300x chips to be enabled with
+         power management support.
+         Enable this if you have Atheros AR300x serial Bluetooth device.
+
+         Say Y here to compile support for HCI UART ATH3K protocol.
+
+config BT_HCIUART_LL
+       bool "HCILL protocol support"
+       depends on BT_HCIUART
+       help
+         HCILL (HCI Low Level) is a serial protocol for communication
+         between Bluetooth device and host. This protocol is required for
+         serial Bluetooth devices that are based on Texas Instruments'
+         BRF chips.
+
+         Say Y here to compile support for HCILL protocol.
+
+config BT_HCIUART_IBS
+       bool "HCI_IBS protocol support"
+       depends on BT_HCIUART
+       default n
+       help
+         HCI_IBS (HCI In-Band Sleep) is a serial protocol for communication
+         between Bluetooth device and host. This protocol is required for
+         UART clock control for some Qualcomm Bluetooth devices.
+
+         Say Y here to compile support for HCI_IBS protocol.
+
+config BT_HCIBCM203X
+       tristate "HCI BCM203x USB driver"
+       depends on USB
+       select FW_LOADER
+       help
+         Bluetooth HCI BCM203x USB driver.
+         This driver provides the firmware loading mechanism for the Broadcom
+         Blutonium based devices.
+
+         Say Y here to compile support for HCI BCM203x devices into the
+         kernel or say M to compile it as module (bcm203x).
+
+config BT_HCIBPA10X
+       tristate "HCI BPA10x USB driver"
+       depends on USB
+       help
+         Bluetooth HCI BPA10x USB driver.
+         This driver provides support for the Digianswer BPA 100/105 Bluetooth
+         sniffer devices.
+
+         Say Y here to compile support for HCI BPA10x devices into the
+         kernel or say M to compile it as module (bpa10x).
+
+config BT_MSM_SLEEP
+       tristate "MSM Bluesleep driver"
+       depends on BT && SERIAL_MSM_HS
+       default n
+       help
+         Bluetooth MSM bluesleep driver.
+         This driver provides support for BTS sleep.
+
+config BT_HCIBFUSB
+       tristate "HCI BlueFRITZ! USB driver"
+       depends on USB
+       select FW_LOADER
+       help
+         Bluetooth HCI BlueFRITZ! USB driver.
+         This driver provides support for Bluetooth USB devices with AVM
+         interface:
+            AVM BlueFRITZ! USB
+
+         Say Y here to compile support for HCI BFUSB devices into the
+         kernel or say M to compile it as module (bfusb).
+
+config BT_HCIDTL1
+       tristate "HCI DTL1 (PC Card) driver"
+       depends on PCMCIA
+       help
+         Bluetooth HCI DTL1 (PC Card) driver.
+         This driver provides support for Bluetooth PCMCIA devices with
+         Nokia DTL1 interface:
+            Nokia Bluetooth Card
+            Socket Bluetooth CF Card
+
+         Say Y here to compile support for HCI DTL1 devices into the
+         kernel or say M to compile it as module (dtl1_cs).
+
+config BT_HCIBT3C
+       tristate "HCI BT3C (PC Card) driver"
+       depends on PCMCIA
+       select FW_LOADER
+       help
+         Bluetooth HCI BT3C (PC Card) driver.
+         This driver provides support for Bluetooth PCMCIA devices with
+         3Com BT3C interface:
+            3Com Bluetooth Card (3CRWB6096)
+            HP Bluetooth Card
+
+         Say Y here to compile support for HCI BT3C devices into the
+         kernel or say M to compile it as module (bt3c_cs).
+
+config BT_HCIBLUECARD
+       tristate "HCI BlueCard (PC Card) driver"
+       depends on PCMCIA
+       help
+         Bluetooth HCI BlueCard (PC Card) driver.
+         This driver provides support for Bluetooth PCMCIA devices with
+         Anycom BlueCard interface:
+            Anycom Bluetooth PC Card
+            Anycom Bluetooth CF Card
+
+         Say Y here to compile support for HCI BlueCard devices into the
+         kernel or say M to compile it as module (bluecard_cs).
+
+config BT_HCIBTUART
+       tristate "HCI UART (PC Card) device driver"
+       depends on PCMCIA
+       help
+         Bluetooth HCI UART (PC Card) driver.
+         This driver provides support for Bluetooth PCMCIA devices with
+         an UART interface:
+            Xircom CreditCard Bluetooth Adapter
+            Xircom RealPort2 Bluetooth Adapter
+            Sphinx PICO Card
+            H-Soft blue+Card
+            Cyber-blue Compact Flash Card
+
+         Say Y here to compile support for HCI UART devices into the
+         kernel or say M to compile it as module (btuart_cs).
+
+config BT_HCIVHCI
+       tristate "HCI VHCI (Virtual HCI device) driver"
+       help
+         Bluetooth Virtual HCI device driver.
+         This driver is required if you want to use HCI Emulation software.
+
+         Say Y here to compile support for virtual HCI devices into the
+         kernel or say M to compile it as module (hci_vhci).
+
+config BT_MRVL
+       tristate "Marvell Bluetooth driver support"
+       help
+         The core driver to support Marvell Bluetooth devices.
+
+         This driver is required if you want to support
+         Marvell Bluetooth devices, such as 8688/8787.
+
+         Say Y here to compile Marvell Bluetooth driver
+         into the kernel or say M to compile it as module.
+
+config BT_MRVL_SDIO
+       tristate "Marvell BT-over-SDIO driver"
+       depends on BT_MRVL && MMC
+       select FW_LOADER
+       help
+         The driver for Marvell Bluetooth chipsets with SDIO interface.
+
+         This driver is required if you want to use Marvell Bluetooth
+         devices with SDIO interface. Currently SD8688/SD8787 chipsets are
+         supported.
+
+         Say Y here to compile support for Marvell BT-over-SDIO driver
+         into the kernel or say M to compile it as module.
+
+config MSM_BT_POWER
+       tristate "MSM Bluetooth Power Control"
+       depends on ARCH_MSM && RFKILL
+       default m
+       help
+         Provides a parameter to switch on/off power from PMIC
+         to Bluetooth device.
+
+config BT_ATH3K
+       tristate "Atheros firmware download driver"
+       depends on BT_HCIBTUSB
+       select FW_LOADER
+       help
+         Bluetooth firmware download driver.
+         This driver loads the firmware into the Atheros Bluetooth
+         chipset.
+
+         Say Y here to compile support for "Atheros firmware download driver"
+         into the kernel or say M to compile it as module (ath3k).
+
+config BT_WILINK
+       tristate "Texas Instruments WiLink7 driver"
+       depends on TI_ST
+       help
+         This enables the Bluetooth driver for Texas Instrument's BT/FM/GPS
+         combo devices. This makes use of shared transport line discipline
+         core driver to communicate with the BT core of the combo chip.
+
+         Say Y here to compile support for Texas Instrument's WiLink7 driver
+         into the kernel or say M to compile it as module.
+endmenu

diff --git a/Makefile b/Makefile
new file mode 100644 (file)
index 0000000..0c51f9b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,37 @@
+#
+# Makefile for the Linux Bluetooth HCI device drivers.
+#
+
+obj-$(CONFIG_BT_HCISMD)                += hci_smd.o
+obj-$(CONFIG_BT_HCIVHCI)       += hci_vhci.o
+obj-$(CONFIG_BT_HCIUART)       += hci_uart.o
+obj-$(CONFIG_BT_HCIBCM203X)    += bcm203x.o
+obj-$(CONFIG_BT_HCIBPA10X)     += bpa10x.o
+obj-$(CONFIG_BT_HCIBFUSB)      += bfusb.o
+obj-$(CONFIG_BT_HCIDTL1)       += dtl1_cs.o
+obj-$(CONFIG_BT_HCIBT3C)       += bt3c_cs.o
+obj-$(CONFIG_BT_HCIBLUECARD)   += bluecard_cs.o
+obj-$(CONFIG_BT_HCIBTUART)     += btuart_cs.o
+
+obj-$(CONFIG_BT_HCIBTUSB)      += btusb.o
+obj-$(CONFIG_BT_RTKBTUSB)      += rtk_btusb.o
+obj-$(CONFIG_BT_HCIBTSDIO)     += btsdio.o
+
+obj-$(CONFIG_BT_ATH3K)         += ath3k.o
+obj-$(CONFIG_BT_MRVL)          += btmrvl.o
+obj-$(CONFIG_BT_MRVL_SDIO)     += btmrvl_sdio.o
+obj-$(CONFIG_BT_WILINK)                += btwilink.o
+
+btmrvl-y                       := btmrvl_main.o
+btmrvl-$(CONFIG_DEBUG_FS)      += btmrvl_debugfs.o
+
+hci_uart-y                             := hci_ldisc.o
+hci_uart-$(CONFIG_BT_HCIUART_H4)       += hci_h4.o
+hci_uart-$(CONFIG_BT_HCIUART_BCSP)     += hci_bcsp.o
+hci_uart-$(CONFIG_BT_HCIUART_LL)       += hci_ll.o
+hci_uart-$(CONFIG_BT_HCIUART_ATH3K)    += hci_ath.o
+hci_uart-$(CONFIG_BT_HCIUART_IBS)      += hci_ibs.o
+hci_uart-objs                          := $(hci_uart-y)
+obj-$(CONFIG_BT_MSM_SLEEP)              += msm_bt_sleep.o
+msm_bt_sleep-objs                       := bluesleep.o
+obj-$(CONFIG_MSM_BT_POWER)             += bluetooth-power.o

diff --git a/rtk_btcoex.c b/rtk_btcoex.c
new file mode 100644 (file)
index 0000000..95d9e91
--- /dev/null
+++ b/rtk_btcoex.c
@@ -0,0 +1,273 @@
+/*
+ *
+ *  Realtek Bluetooth USB driver
+ *
+ *
+ *  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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include <linux/ioctl.h>
+#include <linux/io.h>
+#include <linux/firmware.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <linux/reboot.h>
+#include "rtk_btcoex.h"
+
+#define RTKBT_RELEASE_NAME "test"
+#define VERSION "4.2.1"
+
+#define BTCOEX_CHAR_DEVICE_NAME "rtk_btcoex"
+
+static dev_t btcoex_devid; /* bt coex char device number */
+static struct cdev btcoex_char_dev; /* bt coex character device structure */
+static struct class *btcoex_char_class; /* device class for usb char driver */
+static wait_queue_head_t btcoex_read_wait;
+
+static struct sk_buff_head rtw_q;
+static u8 rtw_coex_on;
+
+u8 rtw_btcoex_wifi_to_bt(u8 *msg, u8 msg_size)
+{
+       struct sk_buff *nskb;
+
+       if (!rtw_coex_on) {
+               RTKBT_WARN("Bluetooth is closed");
+               return 0;
+       }
+
+       nskb = alloc_skb(msg_size, GFP_ATOMIC);
+       if (!nskb) {
+               RTKBT_ERR("Couldnt alloc skb for WiFi coex message");
+               return 0;
+       }
+
+       memcpy(skb_put(nskb, msg_size), msg, msg_size);
+       skb_queue_tail(&rtw_q, nskb);
+  wake_up_interruptible(&btcoex_read_wait);
+       return 1;
+}
+EXPORT_SYMBOL(rtw_btcoex_wifi_to_bt);
+
+static int rtk_send_coexmsg2wifi(u8 *msg, u8 size)
+{
+       u8 result;
+       u8 (*btmsg_to_wifi)(u8 *, u8);
+
+       btmsg_to_wifi = __symbol_get(VMLINUX_SYMBOL_STR(rtw_btcoex_bt_to_wifi));
+
+       if (!btmsg_to_wifi) {
+               return -1;
+       }
+
+       result = btmsg_to_wifi(msg, size);
+       __symbol_put(VMLINUX_SYMBOL_STR(rtw_btcoex_bt_to_wifi));
+       if (!result) {
+               RTKBT_ERR("Couldnt send coex msg to WiFi");
+               return -1;
+       } else if (result == 1){
+               /* successful to send message */
+               return 0;
+       } else {
+               RTKBT_ERR("Unknown result %d", result);
+               return -1;
+       }
+}
+
+static int btcoex_open(struct inode *inode_p, struct file *file_p)
+{
+    skb_queue_head_init(&rtw_q);
+         rtw_coex_on = 1;
+    return nonseekable_open(inode_p, file_p);
+}
+
+static int btcoex_close(struct inode  *inode_p, struct file *file_p)
+{
+    rtw_coex_on = 0;
+         skb_queue_purge(&rtw_q);
+    return 0;
+}
+
+static ssize_t btcoex_read(struct file *file_p, char __user *buf_p, size_t count, loff_t *pos_p)
+{
+    ssize_t ret = 0;
+    struct sk_buff *skb;
+    int len;
+    while(count)
+    {
+        ret = wait_event_interruptible(btcoex_read_wait, !skb_queue_empty(&rtw_q));
+        if (ret < 0) {
+            RTKBT_ERR("%s: wait event is signaled %d", __func__, ret);
+            break;
+        }
+        skb = skb_dequeue(&rtw_q);
+        if(skb->len > count) {
+            skb_queue_head(&rtw_q, skb);
+            return -ENOMEM;
+        }
+        len = min_t(unsigned int, skb->len, count);
+        if (copy_to_user(buf_p, skb->data, len)) {
+            skb_queue_head(&rtw_q, skb);
+            return -EFAULT;
+        }
+        kfree_skb(skb);
+        break;
+    }
+    return len;
+}
+
+static ssize_t btcoex_write(struct file *file_p, const char __user *buf_p, size_t count, loff_t *pos_p)
+{
+    u8 *msg_buff = NULL;
+    msg_buff = vmalloc(count);
+    if (!msg_buff)
+        return -ENOMEM;
+
+    if (copy_from_user(msg_buff, buf_p, count)) {
+        RTKBT_ERR("%s: Failed to get data from user space", __func__);
+        vfree(msg_buff);
+        return -EFAULT;
+    }
+    rtk_send_coexmsg2wifi(msg_buff, count);
+    vfree(msg_buff);
+    return count;
+}
+
+static unsigned int btcoex_poll(struct file *file_p, poll_table *wait)
+{
+
+    RTKBT_DBG("%s: BT coex char device is polling", __func__);
+
+    poll_wait(file_p, &btcoex_read_wait, wait);
+
+    if (!skb_queue_empty(&rtw_q))
+        return POLLIN | POLLRDNORM;
+
+    return POLLOUT | POLLWRNORM;
+}
+
+static long btcoex_ioctl(struct file *file_p, unsigned int cmd, unsigned long arg){
+    int ret = 0;
+
+    return ret;
+}
+
+
+static struct file_operations btcoex_chrdev_ops  = {
+    open    :    btcoex_open,
+    release    :    btcoex_close,
+    read    :    btcoex_read,
+    write    :    btcoex_write,
+    poll    :    btcoex_poll,
+    unlocked_ioctl   :   btcoex_ioctl,
+};
+
+static int btcoex_chr_init(void)
+{
+    int res = 0;
+    struct device *dev;
+
+    RTKBT_INFO("Register usb char device interface for BT driver");
+
+    btcoex_char_class = class_create(THIS_MODULE, BTCOEX_CHAR_DEVICE_NAME);
+    if (IS_ERR(btcoex_char_class)) {
+        RTKBT_ERR("Failed to create bt char class");
+        return PTR_ERR(btcoex_char_class);
+    }
+
+    res = alloc_chrdev_region(&btcoex_devid, 0, 1, BTCOEX_CHAR_DEVICE_NAME);
+    if (res < 0) {
+        RTKBT_ERR("Failed to allocate bt char device");
+        goto err_alloc;
+    }
+
+    dev = device_create(btcoex_char_class, NULL, btcoex_devid, NULL, BTCOEX_CHAR_DEVICE_NAME);
+    if (IS_ERR(dev)) {
+        RTKBT_ERR("Failed to create bt char device");
+        res = PTR_ERR(dev);
+        goto err_create;
+    }
+
+    cdev_init(&btcoex_char_dev, &btcoex_chrdev_ops);
+    res = cdev_add(&btcoex_char_dev, btcoex_devid, 1);
+    if (res < 0) {
+        RTKBT_ERR("Failed to add bt char device");
+        goto err_add;
+    }
+
+    init_waitqueue_head(&btcoex_read_wait);
+    return 0;
+
+err_add:
+    device_destroy(btcoex_char_class, btcoex_devid);
+err_create:
+    unregister_chrdev_region(btcoex_devid, 1);
+err_alloc:
+    class_destroy(btcoex_char_class);
+    return res;
+}
+
+static void btcoex_chr_exit(void)
+{
+    RTKBT_INFO("Unregister usb char device interface for BT driver");
+
+    device_destroy(btcoex_char_class, btcoex_devid);
+    cdev_del(&btcoex_char_dev);
+    unregister_chrdev_region(btcoex_devid, 1);
+    class_destroy(btcoex_char_class);
+
+    return;
+}
+
+static int __init btcoex_init(void)
+{
+    int err;
+
+    RTKBT_INFO("RTKBT_RELEASE_NAME: %s",RTKBT_RELEASE_NAME);
+    RTKBT_INFO("Realtek Bluetooth coex driver module init, version %s", VERSION);
+    err = btcoex_chr_init();
+    if (err < 0) {
+        /* usb register will go on, even bt char register failed */
+        RTKBT_ERR("Failed to register coex char device interfaces");
+    }
+    return err;
+}
+
+static void __exit btcoex_exit(void)
+{
+    RTKBT_INFO("Realtek Bluetooth coex driver module exit");
+    btcoex_chr_exit();
+}
+
+module_init(btcoex_init);
+module_exit(btcoex_exit);
+
+
+MODULE_AUTHOR("Realtek Corporation");
+MODULE_DESCRIPTION("Realtek Bluetooth wifi-bt coex driver version");
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");

diff --git a/rtk_btcoex.h b/rtk_btcoex.h
new file mode 100644 (file)
index 0000000..7b31636
--- /dev/null
+++ b/rtk_btcoex.h
@@ -0,0 +1,51 @@
+/*
+ *
+ *  Realtek Bluetooth USB driver
+ *
+ *
+ *  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_BTCOEX_H
+#define RTK_BTCOEX_H
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/poll.h>
+
+#include <linux/version.h>
+#include <linux/pm_runtime.h>
+#include <linux/firmware.h>
+#include <linux/suspend.h>
+
+
+#define RTKBT_DBG_FLAG 0
+
+#if RTKBT_DBG_FLAG
+#define RTKBT_DBG(fmt, arg...) printk(KERN_INFO "rtk_btcoex: " fmt "\n" , ## arg)
+#else
+#define RTKBT_DBG(fmt, arg...)
+#endif
+#define RTKBT_INFO(fmt, arg...) printk(KERN_INFO "rtk_btcoex: " fmt "\n" , ## arg)
+#define RTKBT_WARN(fmt, arg...) printk(KERN_WARNING "rtk_btcoex: " fmt "\n" , ## arg)
+#define RTKBT_ERR(fmt, arg...) printk(KERN_ERR "rtk_btcoex: " fmt "\n" , ## arg)
+
+#endif

diff --git a/rtk_btusb.c b/rtk_btusb.c
new file mode 100644 (file)
index 0000000..0517624
--- /dev/null
+++ b/rtk_btusb.c
@@ -0,0 +1,4652 @@
+/*
+ *
+ *  Realtek Bluetooth USB driver
+ *
+ *
+ *  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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include <linux/ioctl.h>
+#include <linux/io.h>
+#include <linux/firmware.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/uaccess.h>
+#include <linux/reboot.h>
+
+#include "rtk_btusb.h"
+
+#define RTKBT_RELEASE_NAME "20190311_BT_ANDROID_9.0"
+#define VERSION "5.0.1"
+
+#define SUSPNED_DW_FW 0
+#define SET_WAKEUP_DEVICE 0
+
+
+static spinlock_t queue_lock;
+static spinlock_t dlfw_lock;
+static volatile uint16_t    dlfw_dis_state = 0;
+
+#if SUSPNED_DW_FW
+static firmware_info *fw_info_4_suspend = NULL;
+#endif
+
+static uint32_t usb_info;
+
+static patch_info fw_patch_table[] = {
+/* { vid, pid, lmp_sub_default, lmp_sub, everion, mp_fw_name, fw_name, config_name, fw_cache, fw_len, mac_offset } */
+{ 0x0BDA, 0x1724, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723A */
+{ 0x0BDA, 0x8723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AE */
+{ 0x0BDA, 0xA723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AE for LI */
+{ 0x0BDA, 0x0723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AE */
+{ 0x13D3, 0x3394, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AE for Azurewave*/
+
+{ 0x0BDA, 0x0724, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AU */
+{ 0x0BDA, 0x8725, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AU */
+{ 0x0BDA, 0x872A, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AU */
+{ 0x0BDA, 0x872B, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* 8723AU */
+
+{ 0x0BDA, 0xb720, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723bu_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BU */
+{ 0x0BDA, 0xb72A, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723bu_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BU */
+{ 0x0BDA, 0xb728, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for LC */
+{ 0x0BDA, 0xb723, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+{ 0x0BDA, 0xb72B, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+{ 0x0BDA, 0xb001, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for HP */
+{ 0x0BDA, 0xb002, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+{ 0x0BDA, 0xb003, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+{ 0x0BDA, 0xb004, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+{ 0x0BDA, 0xb005, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE */
+
+{ 0x13D3, 0x3410, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for Azurewave */
+{ 0x13D3, 0x3416, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for Azurewave */
+{ 0x13D3, 0x3459, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for Azurewave */
+{ 0x0489, 0xE085, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for Foxconn */
+{ 0x0489, 0xE08B, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8723BE for Foxconn */
+
+{ 0x0BDA, 0x2850, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AU */
+{ 0x0BDA, 0xA761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AU only */
+{ 0x0BDA, 0x818B, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761aw8192eu_fw", "rtl8761aw8192eu_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AW + 8192EU */
+{ 0x0BDA, 0x818C, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761aw8192eu_fw", "rtl8761aw8192eu_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AW + 8192EU */
+{ 0x0BDA, 0x8760, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8192ee_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AU + 8192EE */
+{ 0x0BDA, 0xB761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AUV only */
+{ 0x0BDA, 0x8761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8192ee_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AU + 8192EE for LI */
+{ 0x0BDA, 0x8A60, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8812ae_fw", "rtl8761a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8761AU + 8812AE */
+{ 0x0BDA, 0x8771, 0x8761, 0, 0, "mp_rtl8761b_fw", "rtl8761b_fw", "rtl8761b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_4PLUS, MAX_PATCH_SIZE_40K}, /* RTL8761BU */
+
+{ 0x0BDA, 0x8821, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+{ 0x0BDA, 0x0821, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+{ 0x0BDA, 0x0823, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AU */
+{ 0x13D3, 0x3414, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+{ 0x13D3, 0x3458, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+{ 0x13D3, 0x3461, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+{ 0x13D3, 0x3462, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_1_2, MAX_PATCH_SIZE_24K}, /* RTL8821AE */
+
+{ 0x0BDA, 0xB822, 0x8822, 0, 0, "mp_rtl8822b_fw", "rtl8822b_fw", "rtl8822b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_24K}, /* RTL8822BE */
+{ 0x0BDA, 0xB82C, 0x8822, 0, 0, "mp_rtl8822b_fw", "rtl8822b_fw", "rtl8822b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_24K}, /* RTL8822BU */
+{ 0x0BDA, 0xB023, 0x8822, 0, 0, "mp_rtl8822b_fw", "rtl8822b_fw", "rtl8822b_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_24K}, /* RTL8822BE */
+{ 0x0BDA, 0xB703, 0x8703, 0, 0, "mp_rtl8723c_fw", "rtl8723c_fw", "rtl8723c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_24K}, /* RTL8723CU */
+/* todo: RTL8703BU */
+
+{ 0x0BDA, 0xD723, 0x8723, 0, 0, "mp_rtl8723d_fw", "rtl8723d_fw", "rtl8723d_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_40K}, /* RTL8723DU */
+{ 0x0BDA, 0xD720, 0x8723, 0, 0, "mp_rtl8723d_fw", "rtl8723d_fw", "rtl8723d_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_40K}, /* RTL8723DE */
+{ 0x0BDA, 0xB820, 0x8821, 0, 0, "mp_rtl8821c_fw", "rtl8821c_fw", "rtl8821c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_40K}, /* RTL8821CU */
+{ 0x0BDA, 0xC820, 0x8821, 0, 0, "mp_rtl8821c_fw", "rtl8821c_fw", "rtl8821c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_40K}, /* RTL8821CU */
+{ 0x0BDA, 0xC821, 0x8821, 0, 0, "mp_rtl8821c_fw", "rtl8821c_fw", "rtl8821c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_3PLUS, MAX_PATCH_SIZE_40K}, /* RTL8821CE */
+/* todo: RTL8703CU */
+{ 0x0BDA, 0xC82C, 0x8822, 0, 0, "mp_rtl8822c_fw", "rtl8822c_fw", "rtl8822c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_4PLUS, MAX_PATCH_SIZE_40K}, /* RTL8822CU */
+{ 0x0BDA, 0xC822, 0x8822, 0, 0, "mp_rtl8822c_fw", "rtl8822c_fw", "rtl8822c_config", NULL, 0 ,CONFIG_MAC_OFFSET_GEN_4PLUS, MAX_PATCH_SIZE_40K}, /* RTL8822CE */
+/* NOTE: must append patch entries above the null entry */
+{ 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, 0, 0 }
+};
+
+struct btusb_data {
+    struct hci_dev       *hdev;
+    struct usb_device    *udev;
+    struct usb_interface *intf;
+    struct usb_interface *isoc;
+
+    spinlock_t lock;
+
+    unsigned long flags;
+
+    struct work_struct work;
+    struct work_struct waker;
+
+    struct usb_anchor tx_anchor;
+    struct usb_anchor intr_anchor;
+    struct usb_anchor bulk_anchor;
+    struct usb_anchor isoc_anchor;
+    struct usb_anchor deferred;
+    int tx_in_flight;
+    spinlock_t txlock;
+
+    struct usb_endpoint_descriptor *intr_ep;
+    struct usb_endpoint_descriptor *bulk_tx_ep;
+    struct usb_endpoint_descriptor *bulk_rx_ep;
+    struct usb_endpoint_descriptor *isoc_tx_ep;
+    struct usb_endpoint_descriptor *isoc_rx_ep;
+
+    __u8 cmdreq_type;
+
+    unsigned int sco_num;
+    int isoc_altsetting;
+    int suspend_count;
+    uint16_t sco_handle;
+//#ifdef CONFIG_HAS_EARLYSUSPEND
+#if 0
+    struct early_suspend early_suspend;
+#else
+    struct notifier_block pm_notifier;
+    struct notifier_block reboot_notifier;
+#endif
+    firmware_info *fw_info;
+
+#ifdef CONFIG_SCO_OVER_HCI
+    RTK_sco_card_t  *pSCOSnd;
+#endif
+};
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 1)
+static bool reset_on_close = 0;
+#endif
+
+int download_patch(firmware_info *fw_info, int cached);
+int reset_controller(firmware_info* fw_info);
+
+static inline int check_set_dlfw_state_value(uint16_t change_value)
+{
+    int state;
+    spin_lock(&dlfw_lock);
+    if(!dlfw_dis_state) {
+        dlfw_dis_state = change_value;
+    }
+    state = dlfw_dis_state;
+    spin_unlock(&dlfw_lock);
+    return state;
+}
+
+static inline void set_dlfw_state_value(uint16_t change_value)
+{
+    spin_lock(&dlfw_lock);
+    dlfw_dis_state = change_value;
+    spin_unlock(&dlfw_lock);
+}
+
+#if SUSPNED_DW_FW
+static int download_suspend_patch(firmware_info *fw_info, int cached);
+#endif
+#if SET_WAKEUP_DEVICE
+static void set_wakeup_device_from_conf(firmware_info *fw_info);
+int set_wakeup_device(firmware_info* fw_info, uint8_t* wakeup_bdaddr);
+#endif
+
+static void rtk_free( struct btusb_data *data)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 1)
+    kfree(data);
+#endif
+    return;
+}
+
+static struct btusb_data *rtk_alloc(struct usb_interface *intf)
+{
+    struct btusb_data *data;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 1)
+    data = kzalloc(sizeof(*data), GFP_KERNEL);
+#else
+    data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+#endif
+    return data;
+}
+
+static void print_acl(struct sk_buff *skb, int direction)
+{
+#if PRINT_ACL_DATA
+    uint wlength = skb->len;
+    u16 *handle = (u16 *)(skb->data);
+    u16 len = *(handle+1);
+    u8 *acl_data = (u8 *)(skb->data);
+
+    RTK_INFO("%s: direction %d, handle %04x, len %d",
+            __func__, direction, *handle, len);
+#endif
+}
+
+static void print_sco(struct sk_buff *skb, int direction)
+{
+#if PRINT_SCO_DATA
+    uint wlength = skb->len;
+    u16 *handle = (u16 *)(skb->data);
+    u8 len = *(u8 *)(handle+1);
+    u8 *sco_data =(u8 *)(skb->data);
+
+    RTKBT_INFO("%s: direction %d, handle %04x, len %d",
+            __func__, direction, *handle, len);
+#endif
+}
+
+static void print_error_command(struct sk_buff *skb)
+{
+    uint wlength = skb->len;
+    uint icount = 0;
+    u16 *opcode = (u16*)(skb->data);
+    u8 *cmd_data = (u8*)(skb->data);
+    u8 len = *(cmd_data+2);
+
+    switch (*opcode) {
+    case HCI_OP_INQUIRY:
+        printk("HCI_OP_INQUIRY");
+        break;
+    case HCI_OP_INQUIRY_CANCEL:
+        printk("HCI_OP_INQUIRY_CANCEL");
+        break;
+    case HCI_OP_EXIT_PERIODIC_INQ:
+        printk("HCI_OP_EXIT_PERIODIC_INQ");
+        break;
+    case HCI_OP_CREATE_CONN:
+        printk("HCI_OP_CREATE_CONN");
+        break;
+    case HCI_OP_DISCONNECT:
+        printk("HCI_OP_DISCONNECT");
+        break;
+    case HCI_OP_CREATE_CONN_CANCEL:
+        printk("HCI_OP_CREATE_CONN_CANCEL");
+        break;
+    case HCI_OP_ACCEPT_CONN_REQ:
+        printk("HCI_OP_ACCEPT_CONN_REQ");
+        break;
+    case HCI_OP_REJECT_CONN_REQ:
+        printk("HCI_OP_REJECT_CONN_REQ");
+        break;
+    case HCI_OP_AUTH_REQUESTED:
+        printk("HCI_OP_AUTH_REQUESTED");
+        break;
+    case HCI_OP_SET_CONN_ENCRYPT:
+        printk("HCI_OP_SET_CONN_ENCRYPT");
+        break;
+    case HCI_OP_REMOTE_NAME_REQ:
+        printk("HCI_OP_REMOTE_NAME_REQ");
+        break;
+    case HCI_OP_READ_REMOTE_FEATURES:
+        printk("HCI_OP_READ_REMOTE_FEATURES");
+        break;
+    case HCI_OP_SNIFF_MODE:
+        printk("HCI_OP_SNIFF_MODE");
+        break;
+    case HCI_OP_EXIT_SNIFF_MODE:
+        printk("HCI_OP_EXIT_SNIFF_MODE");
+        break;
+    case HCI_OP_SWITCH_ROLE:
+        printk("HCI_OP_SWITCH_ROLE");
+        break;
+    case HCI_OP_SNIFF_SUBRATE:
+        printk("HCI_OP_SNIFF_SUBRATE");
+        break;
+    case HCI_OP_RESET:
+        printk("HCI_OP_RESET");
+        break;
+    case HCI_OP_Write_Extended_Inquiry_Response:
+        printk("HCI_Write_Extended_Inquiry_Response");
+        break;
+
+    default:
+        printk("CMD");
+        break;
+    }
+    printk(":%04x,len:%d,", *opcode,len);
+    for (icount = 3; (icount < wlength) && (icount < 24); icount++)
+        printk("%02x ", *(cmd_data+icount));
+    printk("\n");
+}
+
+static void print_command(struct sk_buff *skb)
+{
+#if PRINT_CMD_EVENT
+    print_error_command(skb);
+#endif
+}
+
+#if CONFIG_BLUEDROID
+/* Global parameters for bt usb char driver */
+#define BT_CHAR_DEVICE_NAME "rtkbt_dev"
+struct mutex btchr_mutex;
+static struct sk_buff_head btchr_readq;
+static wait_queue_head_t btchr_read_wait;
+static wait_queue_head_t bt_dlfw_wait;
+static bool bt_char_dev_registered;
+static dev_t bt_devid; /* bt char device number */
+static struct cdev bt_char_dev; /* bt character device structure */
+static struct class *bt_char_class; /* device class for usb char driver */
+static int bt_reset = 0;
+/* HCI device & lock */
+DEFINE_RWLOCK(hci_dev_lock);
+struct hci_dev *ghdev = NULL;
+
+static void print_event(struct sk_buff *skb)
+{
+#if PRINT_CMD_EVENT
+    uint wlength = skb->len;
+    uint icount = 0;
+    u8 *opcode = (u8*)(skb->data);
+    u8 len = *(opcode+1);
+
+    switch (*opcode) {
+    case HCI_EV_INQUIRY_COMPLETE:
+        printk("HCI_EV_INQUIRY_COMPLETE");
+        break;
+    case HCI_EV_INQUIRY_RESULT:
+        printk("HCI_EV_INQUIRY_RESULT");
+        break;
+    case HCI_EV_CONN_COMPLETE:
+        printk("HCI_EV_CONN_COMPLETE");
+        break;
+    case HCI_EV_CONN_REQUEST:
+        printk("HCI_EV_CONN_REQUEST");
+        break;
+    case HCI_EV_DISCONN_COMPLETE:
+        printk("HCI_EV_DISCONN_COMPLETE");
+        break;
+    case HCI_EV_AUTH_COMPLETE:
+        printk("HCI_EV_AUTH_COMPLETE");
+        break;
+    case HCI_EV_REMOTE_NAME:
+        printk("HCI_EV_REMOTE_NAME");
+        break;
+    case HCI_EV_ENCRYPT_CHANGE:
+        printk("HCI_EV_ENCRYPT_CHANGE");
+        break;
+    case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
+        printk("HCI_EV_CHANGE_LINK_KEY_COMPLETE");
+        break;
+    case HCI_EV_REMOTE_FEATURES:
+        printk("HCI_EV_REMOTE_FEATURES");
+        break;
+    case HCI_EV_REMOTE_VERSION:
+        printk("HCI_EV_REMOTE_VERSION");
+        break;
+    case HCI_EV_QOS_SETUP_COMPLETE:
+        printk("HCI_EV_QOS_SETUP_COMPLETE");
+        break;
+    case HCI_EV_CMD_COMPLETE:
+        printk("HCI_EV_CMD_COMPLETE");
+        break;
+    case HCI_EV_CMD_STATUS:
+        printk("HCI_EV_CMD_STATUS");
+        break;
+    case HCI_EV_ROLE_CHANGE:
+        printk("HCI_EV_ROLE_CHANGE");
+        break;
+    case HCI_EV_NUM_COMP_PKTS:
+        printk("HCI_EV_NUM_COMP_PKTS");
+        break;
+    case HCI_EV_MODE_CHANGE:
+        printk("HCI_EV_MODE_CHANGE");
+        break;
+    case HCI_EV_PIN_CODE_REQ:
+        printk("HCI_EV_PIN_CODE_REQ");
+        break;
+    case HCI_EV_LINK_KEY_REQ:
+        printk("HCI_EV_LINK_KEY_REQ");
+        break;
+    case HCI_EV_LINK_KEY_NOTIFY:
+        printk("HCI_EV_LINK_KEY_NOTIFY");
+        break;
+    case HCI_EV_CLOCK_OFFSET:
+        printk("HCI_EV_CLOCK_OFFSET");
+        break;
+    case HCI_EV_PKT_TYPE_CHANGE:
+        printk("HCI_EV_PKT_TYPE_CHANGE");
+        break;
+    case HCI_EV_PSCAN_REP_MODE:
+        printk("HCI_EV_PSCAN_REP_MODE");
+        break;
+    case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
+        printk("HCI_EV_INQUIRY_RESULT_WITH_RSSI");
+        break;
+    case HCI_EV_REMOTE_EXT_FEATURES:
+        printk("HCI_EV_REMOTE_EXT_FEATURES");
+        break;
+    case HCI_EV_SYNC_CONN_COMPLETE:
+        printk("HCI_EV_SYNC_CONN_COMPLETE");
+        break;
+    case HCI_EV_SYNC_CONN_CHANGED:
+        printk("HCI_EV_SYNC_CONN_CHANGED");
+        break;
+    case HCI_EV_SNIFF_SUBRATE:
+        printk("HCI_EV_SNIFF_SUBRATE");
+        break;
+    case HCI_EV_EXTENDED_INQUIRY_RESULT:
+        printk("HCI_EV_EXTENDED_INQUIRY_RESULT");
+        break;
+    case HCI_EV_IO_CAPA_REQUEST:
+        printk("HCI_EV_IO_CAPA_REQUEST");
+        break;
+    case HCI_EV_SIMPLE_PAIR_COMPLETE:
+        printk("HCI_EV_SIMPLE_PAIR_COMPLETE");
+        break;
+    case HCI_EV_REMOTE_HOST_FEATURES:
+        printk("HCI_EV_REMOTE_HOST_FEATURES");
+        break;
+    default:
+        printk("event");
+        break;
+    }
+    printk(":%02x,len:%d,", *opcode,len);
+    for (icount = 2; (icount < wlength) && (icount < 24); icount++)
+        printk("%02x ", *(opcode+icount));
+    printk("\n");
+#endif
+}
+
+static inline ssize_t usb_put_user(struct sk_buff *skb,
+        char __user *buf, int count)
+{
+    char __user *ptr = buf;
+    int len = min_t(unsigned int, skb->len, count);
+
+    if (copy_to_user(ptr, skb->data, len))
+        return -EFAULT;
+
+    return len;
+}
+
+static struct sk_buff *rtk_skb_queue[QUEUE_SIZE];
+static int rtk_skb_queue_front = 0;
+static int rtk_skb_queue_rear = 0;
+
+static void rtk_enqueue(struct sk_buff *skb)
+{
+    unsigned long flags;
+    spin_lock_irqsave(&queue_lock, flags);
+    if (rtk_skb_queue_front == (rtk_skb_queue_rear + 1) % QUEUE_SIZE) {
+        /*
+         * If queue is full, current solution is to drop
+         * the following entries.
+         */
+        RTKBT_WARN("%s: Queue is full, entry will be dropped", __func__);
+    } else {
+        rtk_skb_queue[rtk_skb_queue_rear] = skb;
+
+        rtk_skb_queue_rear++;
+        rtk_skb_queue_rear %= QUEUE_SIZE;
+
+    }
+    spin_unlock_irqrestore(&queue_lock, flags);
+}
+
+static struct sk_buff *rtk_dequeue_try(unsigned int deq_len)
+{
+    struct sk_buff *skb;
+    struct sk_buff *skb_copy;
+
+    if (rtk_skb_queue_front == rtk_skb_queue_rear) {
+        RTKBT_WARN("%s: Queue is empty", __func__);
+        return NULL;
+    }
+
+    skb = rtk_skb_queue[rtk_skb_queue_front];
+    if (deq_len >= skb->len) {
+        rtk_skb_queue[rtk_skb_queue_front] = NULL;
+        rtk_skb_queue_front++;
+        rtk_skb_queue_front %= QUEUE_SIZE;
+
+        /*
+         * Return skb addr to be dequeued, and the caller
+         * should free the skb eventually.
+         */
+        return skb;
+    } else {
+        skb_copy = pskb_copy(skb, GFP_ATOMIC);
+        skb_pull(skb, deq_len);
+        /* Return its copy to be freed */
+        return skb_copy;
+    }
+}
+
+static inline int is_queue_empty(void)
+{
+    return (rtk_skb_queue_front == rtk_skb_queue_rear) ? 1 : 0;
+}
+
+static void rtk_clear_queue(void)
+{
+    struct sk_buff *skb;
+    unsigned long flags;
+    spin_lock_irqsave(&queue_lock, flags);
+    while(!is_queue_empty()) {
+        skb = rtk_skb_queue[rtk_skb_queue_front];
+        rtk_skb_queue[rtk_skb_queue_front] = NULL;
+        rtk_skb_queue_front++;
+        rtk_skb_queue_front %= QUEUE_SIZE;
+        if (skb) {
+            kfree_skb(skb);
+        }
+    }
+    spin_unlock_irqrestore(&queue_lock, flags);
+}
+
+/*
+ * Realtek - Integrate from hci_core.c
+ */
+
+/* Get HCI device by index.
+ * Device is held on return. */
+static struct hci_dev *hci_dev_get(int index)
+{
+    if (index != 0)
+        return NULL;
+
+    return ghdev;
+}
+
+/* ---- HCI ioctl helpers ---- */
+static int hci_dev_open(__u16 dev)
+{
+    struct hci_dev *hdev;
+    int ret = 0;
+
+    RTKBT_DBG("%s: dev %d", __func__, dev);
+
+    hdev = hci_dev_get(dev);
+    if (!hdev) {
+        RTKBT_ERR("%s: Failed to get hci dev[Null]", __func__);
+        return -ENODEV;
+    }
+
+    if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) {
+        ret = -ENODEV;
+        goto done;
+    }
+
+    if (test_bit(HCI_UP, &hdev->flags)) {
+        ret = -EALREADY;
+        goto done;
+    }
+
+done:
+    return ret;
+}
+
+static int hci_dev_do_close(struct hci_dev *hdev)
+{
+    if (hdev->flush)
+        hdev->flush(hdev);
+    /* After this point our queues are empty
+     * and no tasks are scheduled. */
+    hdev->close(hdev);
+    /* Clear flags */
+    hdev->flags = 0;
+    memset(&hdev->conn_hash, 0, sizeof(struct hci_conn_hash));
+    return 0;
+}
+
+static int hci_dev_close(__u16 dev)
+{
+    struct hci_dev *hdev;
+    int err;
+    hdev = hci_dev_get(dev);
+    if (!hdev) {
+        RTKBT_ERR("%s: failed to get hci dev[Null]", __func__);
+        return -ENODEV;
+    }
+
+    err = hci_dev_do_close(hdev);
+
+    return err;
+}
+
+static struct hci_dev *hci_alloc_dev(void)
+{
+    struct hci_dev *hdev;
+
+    hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL);
+    if (!hdev)
+        return NULL;
+
+    return hdev;
+}
+
+/* Free HCI device */
+static void hci_free_dev(struct hci_dev *hdev)
+{
+    kfree(hdev);
+}
+
+/* Register HCI device */
+static int hci_register_dev(struct hci_dev *hdev)
+{
+    int i, id;
+
+    RTKBT_DBG("%s: %p name %s bus %d", __func__, hdev, hdev->name, hdev->bus);
+    /* Do not allow HCI_AMP devices to register at index 0,
+     * so the index can be used as the AMP controller ID.
+     */
+    id = (hdev->dev_type == HCI_BREDR) ? 0 : 1;
+
+    write_lock(&hci_dev_lock);
+
+    sprintf(hdev->name, "hci%d", id);
+    hdev->id = id;
+    hdev->flags = 0;
+    hdev->dev_flags = 0;
+    mutex_init(&hdev->lock);
+
+    RTKBT_DBG("%s: id %d, name %s", __func__, hdev->id, hdev->name);
+
+
+    for (i = 0; i < NUM_REASSEMBLY; i++)
+        hdev->reassembly[i] = NULL;
+
+    memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
+    atomic_set(&hdev->promisc, 0);
+
+    if (ghdev) {
+        write_unlock(&hci_dev_lock);
+        RTKBT_ERR("%s: Hci device has been registered already", __func__);
+        return -1;
+    } else
+        ghdev = hdev;
+
+    write_unlock(&hci_dev_lock);
+
+    return id;
+}
+
+/* Unregister HCI device */
+static void hci_unregister_dev(struct hci_dev *hdev)
+{
+    int i;
+
+    RTKBT_DBG("%s: hdev %p name %s bus %d", __func__, hdev, hdev->name, hdev->bus);
+    set_bit(HCI_UNREGISTER, &hdev->dev_flags);
+
+    write_lock(&hci_dev_lock);
+    ghdev = NULL;
+    write_unlock(&hci_dev_lock);
+
+    hci_dev_do_close(hdev);
+    for (i = 0; i < NUM_REASSEMBLY; i++)
+        kfree_skb(hdev->reassembly[i]);
+}
+
+
+#ifdef CONFIG_SCO_OVER_HCI
+/* copy data from the URB buffer into the ALSA ring buffer */
+static bool rtk_copy_capture_data_to_alsa(struct btusb_data *data, uint8_t* p_data, unsigned int frames)
+{
+       struct snd_pcm_runtime *runtime;
+       unsigned int frame_bytes, frames1;
+       u8 *dest;
+    RTK_sco_card_t  *pSCOSnd = data->pSCOSnd;
+
+       runtime = pSCOSnd->capture.substream->runtime;
+       frame_bytes = 2;
+
+       dest = runtime->dma_area + pSCOSnd->capture.buffer_pos * frame_bytes;
+       if (pSCOSnd->capture.buffer_pos + frames <= runtime->buffer_size) {
+               memcpy(dest, p_data, frames * frame_bytes);
+       } else {
+               /* wrap around at end of ring buffer */
+               frames1 = runtime->buffer_size - pSCOSnd->capture.buffer_pos;
+               memcpy(dest, p_data, frames1 * frame_bytes);
+               memcpy(runtime->dma_area,
+                      p_data + frames1 * frame_bytes,
+                      (frames - frames1) * frame_bytes);
+       }
+
+       pSCOSnd->capture.buffer_pos += frames;
+       if (pSCOSnd->capture.buffer_pos >= runtime->buffer_size) {
+               pSCOSnd->capture.buffer_pos -= runtime->buffer_size;
+       }
+
+    if((pSCOSnd->capture.buffer_pos%runtime->period_size) == 0) {
+        snd_pcm_period_elapsed(pSCOSnd->capture.substream);
+    }
+
+       return false;
+}
+
+
+static void hci_send_to_alsa_ringbuffer(struct hci_dev *hdev, struct sk_buff *skb)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    RTK_sco_card_t  *pSCOSnd = data->pSCOSnd;
+    uint8_t* p_data;
+    int sco_length = skb->len - HCI_SCO_HDR_SIZE;
+
+    RTKBT_DBG("%s", __func__);
+
+    if (!hdev) {
+        RTKBT_ERR("%s: Frame for unknown HCI device", __func__);
+        return;
+    }
+
+    if (!test_bit(ALSA_CAPTURE_RUNNING, &pSCOSnd->states)) {
+        //RTKBT_WARN("%s: ALSA is not running", __func__);
+        return;
+    }
+
+    p_data = (uint8_t *)skb->data + HCI_SCO_HDR_SIZE;
+    rtk_copy_capture_data_to_alsa(data, p_data, sco_length/2);
+}
+
+#endif
+
+static void hci_send_to_stack(struct hci_dev *hdev, struct sk_buff *skb)
+{
+    struct sk_buff *rtk_skb_copy = NULL;
+
+    RTKBT_DBG("%s", __func__);
+
+    if (!hdev) {
+        RTKBT_ERR("%s: Frame for unknown HCI device", __func__);
+        return;
+    }
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags)) {
+        RTKBT_ERR("%s: HCI not running", __func__);
+        return;
+    }
+
+    rtk_skb_copy = pskb_copy(skb, GFP_ATOMIC);
+    if (!rtk_skb_copy) {
+        RTKBT_ERR("%s: Copy skb error", __func__);
+        return;
+    }
+
+    memcpy(skb_push(rtk_skb_copy, 1), &bt_cb(skb)->pkt_type, 1);
+    rtk_enqueue(rtk_skb_copy);
+
+    /* Make sure bt char device existing before wakeup read queue */
+    hdev = hci_dev_get(0);
+    if (hdev) {
+        RTKBT_DBG("%s: Try to wakeup read queue", __func__);
+        wake_up_interruptible(&btchr_read_wait);
+    }
+
+    return;
+}
+
+/* Receive frame from HCI drivers */
+static int hci_recv_frame(struct sk_buff *skb)
+{
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+    if (!hdev ||
+        (!test_bit(HCI_UP, &hdev->flags) && !test_bit(HCI_INIT, &hdev->flags))) {
+        kfree_skb(skb);
+        return -ENXIO;
+    }
+
+    /* Incomming skb */
+    bt_cb(skb)->incoming = 1;
+
+    /* Time stamp */
+    __net_timestamp(skb);
+
+    if (atomic_read(&hdev->promisc)) {
+#ifdef CONFIG_SCO_OVER_HCI
+        if(bt_cb(skb)->pkt_type == HCI_SCODATA_PKT)
+            hci_send_to_alsa_ringbuffer(hdev, skb);
+#endif
+        /* Send copy to the sockets */
+        hci_send_to_stack(hdev, skb);
+    }
+
+    kfree_skb(skb);
+    return 0;
+}
+
+/* Receive frame from HCI drivers */
+static int hci_recv_sco_frame(struct sk_buff *skb)
+{
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+    if (!hdev ||
+        (!test_bit(HCI_UP, &hdev->flags) && !test_bit(HCI_INIT, &hdev->flags))) {
+        kfree_skb(skb);
+        return -ENXIO;
+    }
+
+    /* Incomming skb */
+    bt_cb(skb)->incoming = 1;
+
+    /* Time stamp */
+    __net_timestamp(skb);
+
+    if (atomic_read(&hdev->promisc)) {
+#ifdef CONFIG_SCO_OVER_HCI
+        if(bt_cb(skb)->pkt_type == HCI_SCODATA_PKT)
+            hci_send_to_alsa_ringbuffer(hdev, skb);
+#endif
+        /* Send copy to the sockets */
+        hci_send_to_stack(hdev, skb);
+    }
+
+    kfree_skb(skb);
+    return 0;
+}
+
+static int hci_reassembly(struct hci_dev *hdev, int type, void *data,
+                          int count, __u8 index)
+{
+    int len = 0;
+    int hlen = 0;
+    int remain = count;
+    struct sk_buff *skb;
+    struct bt_skb_cb *scb;
+
+    RTKBT_DBG("%s", __func__);
+
+    if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) ||
+            index >= NUM_REASSEMBLY)
+        return -EILSEQ;
+
+    skb = hdev->reassembly[index];
+
+    if (!skb) {
+        switch (type) {
+        case HCI_ACLDATA_PKT:
+            len = HCI_MAX_FRAME_SIZE;
+            hlen = HCI_ACL_HDR_SIZE;
+            break;
+        case HCI_EVENT_PKT:
+            len = HCI_MAX_EVENT_SIZE;
+            hlen = HCI_EVENT_HDR_SIZE;
+            break;
+        case HCI_SCODATA_PKT:
+            len = HCI_MAX_SCO_SIZE;
+            hlen = HCI_SCO_HDR_SIZE;
+            break;
+        }
+
+        skb = bt_skb_alloc(len, GFP_ATOMIC);
+        if (!skb)
+            return -ENOMEM;
+
+        scb = (void *) skb->cb;
+        scb->expect = hlen;
+        scb->pkt_type = type;
+
+        skb->dev = (void *) hdev;
+        hdev->reassembly[index] = skb;
+
+    }
+
+    while (count) {
+        scb = (void *) skb->cb;
+        len = min_t(uint, scb->expect, count);
+
+        memcpy(skb_put(skb, len), data, len);
+
+        count -= len;
+        data += len;
+        scb->expect -= len;
+        remain = count;
+
+        switch (type) {
+        case HCI_EVENT_PKT:
+            if (skb->len == HCI_EVENT_HDR_SIZE) {
+                struct hci_event_hdr *h = hci_event_hdr(skb);
+                scb->expect = h->plen;
+
+                if (skb_tailroom(skb) < scb->expect) {
+                    kfree_skb(skb);
+                    hdev->reassembly[index] = NULL;
+                    return -ENOMEM;
+                }
+            }
+            break;
+
+        case HCI_ACLDATA_PKT:
+            if (skb->len  == HCI_ACL_HDR_SIZE) {
+                struct hci_acl_hdr *h = hci_acl_hdr(skb);
+                scb->expect = __le16_to_cpu(h->dlen);
+
+                if (skb_tailroom(skb) < scb->expect) {
+                    kfree_skb(skb);
+                    hdev->reassembly[index] = NULL;
+                    return -ENOMEM;
+                }
+            }
+            break;
+
+        case HCI_SCODATA_PKT:
+            if (skb->len == HCI_SCO_HDR_SIZE) {
+                struct hci_sco_hdr *h = hci_sco_hdr(skb);
+                scb->expect = h->dlen;
+
+                if (skb_tailroom(skb) < scb->expect) {
+                    kfree_skb(skb);
+                    hdev->reassembly[index] = NULL;
+                    return -ENOMEM;
+                }
+            }
+            break;
+        }
+
+        if (scb->expect == 0) {
+            /* Complete frame */
+            if(HCI_ACLDATA_PKT == type)
+                print_acl(skb,0);
+            if(HCI_SCODATA_PKT == type)
+                print_sco(skb,0);
+            if(HCI_EVENT_PKT == type)
+                print_event(skb);
+
+            bt_cb(skb)->pkt_type = type;
+            if(type == HCI_SCODATA_PKT) {
+                hci_recv_sco_frame(skb);
+            }
+            else
+                hci_recv_frame(skb);
+
+            hdev->reassembly[index] = NULL;
+            return remain;
+        }
+    }
+
+    return remain;
+}
+
+static int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count)
+{
+    int rem = 0;
+
+    if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT)
+        return -EILSEQ;
+
+    while (count) {
+        rem = hci_reassembly(hdev, type, data, count, type - 1);
+        if (rem < 0)
+            return rem;
+
+        data += (count - rem);
+        count = rem;
+    }
+
+    return rem;
+}
+
+void hci_hardware_error(void)
+{
+    struct sk_buff *rtk_skb_copy = NULL;
+    int len = 4;
+    uint8_t hardware_err_pkt[4] = {HCI_EVENT_PKT, 0x10, 0x01, HCI_VENDOR_USB_DISC_HARDWARE_ERROR};
+
+    rtk_skb_copy = alloc_skb(len, GFP_ATOMIC);
+    if (!rtk_skb_copy) {
+        RTKBT_ERR("%s: Failed to allocate mem", __func__);
+        return;
+    }
+
+    memcpy(skb_put(rtk_skb_copy, len), hardware_err_pkt, len);
+    rtk_enqueue(rtk_skb_copy);
+
+    wake_up_interruptible(&btchr_read_wait);
+}
+
+static int btchr_open(struct inode *inode_p, struct file  *file_p)
+{
+    struct btusb_data *data;
+    struct hci_dev *hdev;
+    struct sk_buff *skb;
+    int i;
+
+    RTKBT_INFO("%s: BT usb char device is opening", __func__);
+    /* Not open unless wanna tracing log */
+    /* trace_printk("%s: open....\n", __func__); */
+
+    hdev = hci_dev_get(0);
+    if (!hdev) {
+        RTKBT_ERR("%s: Failed to get hci dev[NULL]", __func__);
+        return -ENODEV;
+    }
+    data = GET_DRV_DATA(hdev);
+
+    atomic_inc(&hdev->promisc);
+    /*
+     * As bt device is not re-opened when hotplugged out, we cannot
+     * trust on file's private data(may be null) when other file ops
+     * are invoked.
+     */
+    file_p->private_data = data;
+
+    mutex_lock(&btchr_mutex);
+    hci_dev_open(0);
+    mutex_unlock(&btchr_mutex);
+
+    rtk_clear_queue();
+    for(i = 0; i < NUM_REASSEMBLY; i++) {
+        skb = hdev->reassembly[i];
+        if(skb) {
+            hdev->reassembly[i] = NULL;
+            kfree_skb(skb);
+        }
+    }
+    return nonseekable_open(inode_p, file_p);
+}
+
+static int btchr_close(struct inode  *inode_p, struct file   *file_p)
+{
+    struct btusb_data *data;
+    struct hci_dev *hdev;
+
+    RTKBT_INFO("%s: BT usb char device is closing", __func__);
+    /* Not open unless wanna tracing log */
+    /* trace_printk("%s: close....\n", __func__); */
+
+    data = file_p->private_data;
+    file_p->private_data = NULL;
+
+#if CONFIG_BLUEDROID
+    /*
+     * If the upper layer closes bt char interfaces, no reset
+     * action required even bt device hotplugged out.
+     */
+    bt_reset = 0;
+#endif
+
+    hdev = hci_dev_get(0);
+    if (hdev) {
+        atomic_set(&hdev->promisc, 0);
+        mutex_lock(&btchr_mutex);
+        hci_dev_close(0);
+        mutex_unlock(&btchr_mutex);
+    }
+
+    return 0;
+}
+
+static ssize_t btchr_read(struct file *file_p,
+        char __user *buf_p,
+        size_t count,
+        loff_t *pos_p)
+{
+    struct hci_dev *hdev;
+    struct sk_buff *skb;
+    ssize_t ret = 0;
+
+    RTKBT_DBG("%s: BT usb char device is reading", __func__);
+
+    while (count) {
+        hdev = hci_dev_get(0);
+        if (!hdev) {
+            /*
+             * Note: Only when BT device hotplugged out, we wil get
+             * into such situation. In order to keep the upper layer
+             * stack alive (blocking the read), we should never return
+             * EFAULT or break the loop.
+             */
+            RTKBT_ERR("%s: Failed to get hci dev[Null]", __func__);
+        }
+
+        ret = wait_event_interruptible(btchr_read_wait, !is_queue_empty());
+        if (ret < 0) {
+            //RTKBT_ERR("%s: wait event is signaled %d", __func__, ret);
+            break;
+        }
+
+        skb = rtk_dequeue_try(count);
+        if (skb) {
+            ret = usb_put_user(skb, buf_p, count);
+            if (ret < 0)
+                RTKBT_ERR("%s: Failed to put data to user space", __func__);
+            kfree_skb(skb);
+            break;
+        }
+    }
+
+    return ret;
+}
+
+static ssize_t btchr_write(struct file *file_p,
+        const char __user *buf_p,
+        size_t count,
+        loff_t *pos_p)
+{
+    struct btusb_data *data = file_p->private_data;
+    struct hci_dev *hdev;
+    struct sk_buff *skb;
+
+    RTKBT_DBG("%s: BT usb char device is writing", __func__);
+
+    hdev = hci_dev_get(0);
+    if (!hdev) {
+        RTKBT_WARN("%s: Failed to get hci dev[Null]", __func__);
+        /*
+         * Note: we bypass the data from the upper layer if bt device
+         * is hotplugged out. Fortunatelly, H4 or H5 HCI stack does
+         * NOT check btchr_write's return value. However, returning
+         * count instead of EFAULT is preferable.
+         */
+        /* return -EFAULT; */
+        return count;
+    }
+
+    /* Never trust on btusb_data, as bt device may be hotplugged out */
+    data = GET_DRV_DATA(hdev);
+    if (!data) {
+        RTKBT_WARN("%s: Failed to get bt usb driver data[Null]", __func__);
+        return count;
+    }
+
+    if (count > HCI_MAX_FRAME_SIZE)
+        return -EINVAL;
+
+    skb = bt_skb_alloc(count, GFP_ATOMIC);
+    if (!skb)
+        return -ENOMEM;
+    skb_reserve(skb, -1); // Add this line
+
+    if (copy_from_user(skb_put(skb, count), buf_p, count)) {
+        RTKBT_ERR("%s: Failed to get data from user space", __func__);
+        kfree_skb(skb);
+        return -EFAULT;
+    }
+
+    skb->dev = (void *)hdev;
+    bt_cb(skb)->pkt_type = *((__u8 *)skb->data);
+    skb_pull(skb, 1);
+    data->hdev->send(skb);
+
+    return count;
+}
+
+static unsigned int btchr_poll(struct file *file_p, poll_table *wait)
+{
+    struct btusb_data *data = file_p->private_data;
+    struct hci_dev *hdev;
+
+    RTKBT_DBG("%s: BT usb char device is polling", __func__);
+
+    if(!bt_char_dev_registered) {
+        RTKBT_ERR("%s: char device has not registered!", __func__);
+        return POLLERR | POLLHUP;
+    }
+
+    poll_wait(file_p, &btchr_read_wait, wait);
+
+    hdev = hci_dev_get(0);
+    if (!hdev) {
+        RTKBT_ERR("%s: Failed to get hci dev[Null]", __func__);
+        mdelay(URB_CANCELING_DELAY_MS);
+        return POLLOUT | POLLWRNORM;
+    }
+
+    /* Never trust on btusb_data, as bt device may be hotplugged out */
+    data = GET_DRV_DATA(hdev);
+    if (!data) {
+        /*
+         * When bt device is hotplugged out, btusb_data will
+         * be freed in disconnect.
+         */
+        RTKBT_ERR("%s: Failed to get bt usb driver data[Null]", __func__);
+        mdelay(URB_CANCELING_DELAY_MS);
+        return POLLOUT | POLLWRNORM;
+    }
+
+    if (!is_queue_empty())
+        return POLLIN | POLLRDNORM;
+
+    return POLLOUT | POLLWRNORM;
+}
+static long btchr_ioctl(struct file *file_p, unsigned int cmd, unsigned long arg){
+    int ret = 0;
+    struct hci_dev *hdev;
+    struct btusb_data *data;
+    firmware_info *fw_info;
+
+    if(!bt_char_dev_registered) {
+        return -ENODEV;
+    }
+
+    if(check_set_dlfw_state_value(1) != 1) {
+        RTKBT_ERR("%s bt controller is disconnecting!", __func__);
+        return 0;
+    }
+
+    hdev = hci_dev_get(0);
+    if(!hdev) {
+        RTKBT_ERR("%s device is NULL!", __func__);
+        set_dlfw_state_value(0);
+        return 0;
+    }
+    data = GET_DRV_DATA(hdev);
+    fw_info = data->fw_info;
+
+    RTKBT_INFO(" btchr_ioctl DOWN_FW_CFG with Cmd:%d",cmd);
+    switch (cmd) {
+        case DOWN_FW_CFG:
+            ret = usb_autopm_get_interface(data->intf);
+            if (ret < 0){
+                goto failed;
+            }
+
+            ret = download_patch(fw_info,1);
+            usb_autopm_put_interface(data->intf);
+            if(ret < 0){
+                RTKBT_ERR("%s:Failed in download_patch with ret:%d",__func__,ret);
+                goto failed;
+            }
+
+            ret = hdev->open(hdev);
+            if(ret < 0){
+                RTKBT_ERR("%s:Failed in hdev->open(hdev):%d",__func__,ret);
+                goto failed;
+            }
+            set_bit(HCI_UP, &hdev->flags);
+            set_dlfw_state_value(0);
+            wake_up_interruptible(&bt_dlfw_wait);
+            return 1;
+
+#ifdef CONFIG_SCO_OVER_HCI
+        case SET_ISO_CFG:
+            if(get_user(hdev->voice_setting, (__u16 __user*)arg)) {
+                ret = -EFAULT;
+            }
+            RTKBT_INFO(" voice settings = 0x%04x", hdev->voice_setting);
+            return ret;
+#endif
+
+        case GET_USB_INFO:
+            ret = hdev->open(hdev);
+            if(ret < 0){
+                RTKBT_ERR("%s:Failed in hdev->open(hdev):%d",__func__,ret);
+                //goto done;
+            }
+            set_bit(HCI_UP, &hdev->flags);
+            return usb_info;
+        case RESET_CONTROLLER:
+            reset_controller(fw_info);
+            return 1;
+
+        case DWFW_CMPLT:
+            set_dlfw_state_value(0);
+            wake_up_interruptible(&bt_dlfw_wait);
+            return 1;
+
+#ifdef CONFIG_SCO_OVER_HCI
+        case SET_ISO_CFG:
+            hdev->voice_setting = *(__u16 *)arg;
+            RTKBT_INFO(" voice settings = 0x%04x", hdev->voice_setting);
+            return 1;
+#endif
+        default:
+            RTKBT_ERR("%s:Failed with wrong Cmd:%d",__func__,cmd);
+            goto failed;
+        }
+    failed:
+        set_dlfw_state_value(0);
+        wake_up_interruptible(&bt_dlfw_wait);
+        return ret;
+
+}
+
+
+
+static struct file_operations bt_chrdev_ops  = {
+    open    :    btchr_open,
+    release    :    btchr_close,
+    read    :    btchr_read,
+    write    :    btchr_write,
+    poll    :    btchr_poll,
+    unlocked_ioctl   :   btchr_ioctl,
+};
+
+static int btchr_init(void)
+{
+    int res = 0;
+    struct device *dev;
+
+    RTKBT_INFO("Register usb char device interface for BT driver");
+    /*
+     * btchr mutex is used to sync between
+     * 1) downloading patch and opening bt char driver
+     * 2) the file operations of bt char driver
+     */
+    mutex_init(&btchr_mutex);
+
+    skb_queue_head_init(&btchr_readq);
+    init_waitqueue_head(&btchr_read_wait);
+    init_waitqueue_head(&bt_dlfw_wait);
+
+    bt_char_class = class_create(THIS_MODULE, BT_CHAR_DEVICE_NAME);
+    if (IS_ERR(bt_char_class)) {
+        RTKBT_ERR("Failed to create bt char class");
+        return PTR_ERR(bt_char_class);
+    }
+
+    res = alloc_chrdev_region(&bt_devid, 0, 1, BT_CHAR_DEVICE_NAME);
+    if (res < 0) {
+        RTKBT_ERR("Failed to allocate bt char device");
+        goto err_alloc;
+    }
+
+    dev = device_create(bt_char_class, NULL, bt_devid, NULL, BT_CHAR_DEVICE_NAME);
+    if (IS_ERR(dev)) {
+        RTKBT_ERR("Failed to create bt char device");
+        res = PTR_ERR(dev);
+        goto err_create;
+    }
+
+    cdev_init(&bt_char_dev, &bt_chrdev_ops);
+    res = cdev_add(&bt_char_dev, bt_devid, 1);
+    if (res < 0) {
+        RTKBT_ERR("Failed to add bt char device");
+        goto err_add;
+    }
+
+    return 0;
+
+err_add:
+    device_destroy(bt_char_class, bt_devid);
+err_create:
+    unregister_chrdev_region(bt_devid, 1);
+err_alloc:
+    class_destroy(bt_char_class);
+    return res;
+}
+
+static void btchr_exit(void)
+{
+    RTKBT_INFO("Unregister usb char device interface for BT driver");
+
+    device_destroy(bt_char_class, bt_devid);
+    cdev_del(&bt_char_dev);
+    unregister_chrdev_region(bt_devid, 1);
+    class_destroy(bt_char_class);
+
+    return;
+}
+#endif
+
+int send_hci_cmd(firmware_info *fw_info)
+{
+   int i = 0;
+   int ret_val = -1;
+   while((ret_val<0)&&(i++<10))
+   {
+       ret_val = usb_control_msg(
+          fw_info->udev, fw_info->pipe_out,
+          0, USB_TYPE_CLASS, 0, 0,
+          (void *)(fw_info->send_pkt),
+          fw_info->pkt_len, MSG_TO);
+   }
+   return ret_val;
+}
+
+int rcv_hci_evt(firmware_info *fw_info)
+{
+    int ret_len = 0, ret_val = 0;
+    int i;
+
+    while (1) {
+        for(i = 0; i < 5; i++) {
+        ret_val = usb_interrupt_msg(
+            fw_info->udev, fw_info->pipe_in,
+            (void *)(fw_info->rcv_pkt), PKT_LEN,
+            &ret_len, MSG_TO);
+            if (ret_val >= 0)
+                break;
+        }
+
+        if (ret_val < 0)
+            return ret_val;
+
+        if (CMD_CMP_EVT == fw_info->evt_hdr->evt) {
+            if (fw_info->cmd_hdr->opcode == fw_info->cmd_cmp->opcode)
+                return ret_len;
+        }
+    }
+}
+
+int set_bt_onoff(firmware_info *fw_info, uint8_t onoff)
+{
+    patch_info *patch_entry;
+    int ret_val;
+
+    RTKBT_INFO("%s: %s", __func__, onoff != 0 ? "on" : "off");
+
+    patch_entry = fw_info->patch_entry;
+    if (!patch_entry)
+        return -1;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(BTOFF_OPCODE);
+    fw_info->cmd_hdr->plen = 1;
+    fw_info->pkt_len = CMD_HDR_LEN + 1;
+    fw_info->send_pkt[CMD_HDR_LEN] = onoff;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send bt %s cmd, errno %d",
+                __func__, onoff != 0 ? "on" : "off", ret_val);
+        return ret_val;
+    }
+
+    ret_val = rcv_hci_evt(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to receive bt %s event, errno %d",
+                __func__, onoff != 0 ? "on" : "off", ret_val);
+        return ret_val;
+    }
+
+    return ret_val;
+}
+
+static patch_info *get_fw_table_entry(struct usb_device* udev)
+{
+    patch_info *patch_entry = fw_patch_table;
+    uint16_t vid = le16_to_cpu(udev->descriptor.idVendor);
+    uint16_t pid = le16_to_cpu(udev->descriptor.idProduct);
+    uint32_t entry_size = sizeof(fw_patch_table) / sizeof(fw_patch_table[0]);
+    uint32_t i;
+
+    RTKBT_INFO("%s: Product id = 0x%04x, fw table entry size %d", __func__, pid, entry_size);
+    usb_info = (uint32_t)(vid<<16) | pid;
+
+    for (i = 0; i < entry_size; i++, patch_entry++) {
+        if ((vid == patch_entry->vid)&&(pid == patch_entry->pid))
+            break;
+    }
+
+    if (i == entry_size) {
+        RTKBT_ERR("%s: No fw table entry found", __func__);
+        return NULL;
+    }
+
+    return patch_entry;
+}
+
+#if SUSPNED_DW_FW
+static patch_info *get_suspend_fw_table_entry(struct usb_device* udev)
+{
+    patch_info *patch_entry = fw_patch_table;
+    patch_info *patch_entry_real = NULL;
+    uint16_t vid = le16_to_cpu(udev->descriptor.idVendor);
+    uint16_t pid = le16_to_cpu(udev->descriptor.idProduct);
+    uint32_t entry_size = sizeof(fw_patch_table) / sizeof(fw_patch_table[0]);
+    uint32_t i;
+
+    RTKBT_INFO("%s: Product id = 0x%04x, fw table entry size %d", __func__, pid, entry_size);
+
+    for (i = 0; i < entry_size; i++, patch_entry++) {
+        if ((vid == patch_entry->vid)&&(pid == patch_entry->pid))
+            break;
+    }
+
+    if (i == entry_size) {
+        RTKBT_ERR("%s: No fw table entry found", __func__);
+        return NULL;
+    }
+    patch_entry_real = kmalloc(sizeof(fw_patch_table[0]), GFP_KERNEL);
+    if(!patch_entry_real)
+        return NULL;
+    memcpy(patch_entry_real, patch_entry, sizeof(fw_patch_table[0]));
+    return patch_entry_real;
+}
+#endif
+
+static struct rtk_epatch_entry *get_fw_patch_entry(struct rtk_epatch *epatch_info, uint16_t eco_ver)
+{
+    int patch_num = epatch_info->number_of_total_patch;
+    uint8_t *epatch_buf = (uint8_t *)epatch_info;
+    struct rtk_epatch_entry *p_entry = NULL;
+    int coex_date;
+    int coex_ver;
+    int i;
+
+    for (i = 0; i < patch_num; i++) {
+        if (*(uint16_t *)(epatch_buf + 14 + 2*i) == eco_ver + 1) {
+            p_entry = kzalloc(sizeof(*p_entry), GFP_KERNEL);
+            if (!p_entry) {
+                RTKBT_ERR("%s: Failed to allocate mem for patch entry", __func__);
+                return NULL;
+            }
+            p_entry->chip_id = eco_ver + 1;
+            p_entry->patch_length = *(uint16_t*)(epatch_buf + 14 + 2*patch_num + 2*i);
+            p_entry->start_offset = *(uint32_t*)(epatch_buf + 14 + 4*patch_num + 4*i);
+            p_entry->coex_version = *(uint32_t*)(epatch_buf + p_entry->start_offset + p_entry->patch_length - 12);
+            p_entry->svn_version = *(uint32_t*)(epatch_buf + p_entry->start_offset + p_entry->patch_length - 8);
+            p_entry->fw_version = *(uint32_t*)(epatch_buf + p_entry->start_offset + p_entry->patch_length - 4);
+
+            coex_date = ((p_entry->coex_version >> 16) & 0x7ff) + ((p_entry->coex_version >> 27) * 10000);
+            coex_ver = p_entry->coex_version & 0xffff;
+
+            RTKBT_INFO("BTCOEX:20%06d-0x%04x svn version:0x%08x fw version:0x%08x rtk_btusb version:%s Cut:%d, patch length:0x%04x, patch offset:0x%08x\n", \
+                    coex_date, coex_ver, p_entry->svn_version, p_entry->fw_version, VERSION, p_entry->chip_id, p_entry->patch_length, p_entry->start_offset);
+            break;
+        }
+    }
+
+    return p_entry;
+}
+
+/*reset_controller is aimed to reset_bt_fw before updata Fw patch*/
+int reset_controller(firmware_info* fw_info)
+{
+    int ret_val;
+    RTKBT_ERR("reset_controller");
+
+    if (!fw_info)
+        return -ENODEV;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_VENDOR_FORCE_RESET_AND_PATCHABLE);
+    fw_info->cmd_hdr->plen = 0;
+    fw_info->pkt_len = CMD_HDR_LEN;
+    ret_val = send_hci_cmd(fw_info);
+
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send hci cmd 0x%04x, errno %d",
+                __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    //sleep 1s for firmware reset.
+    msleep(1000);
+    RTKBT_INFO("%s: Wait fw reset for 1000ms",__func__);
+
+    return ret_val;
+}
+/*reset_controller is aimed to reset_bt_fw before updata Fw patch*/
+
+/*
+ * check the return value
+ * 1: need to download fw patch
+ * 0: no need to download fw patch
+ * <0: failed to check lmp version
+ */
+int check_fw_version(firmware_info* fw_info, bool resume_check)
+{
+    struct hci_rp_read_local_version *read_ver_rsp;
+    patch_info *patch_entry = NULL;
+    int ret_val = -1, i, ret_len = 0;
+    struct sk_buff *rtk_skb_copy = NULL;
+    unsigned char pkt_type = HCI_EVENT_PKT;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_OP_READ_LOCAL_VERSION);
+    fw_info->cmd_hdr->plen = 0;
+    fw_info->pkt_len = CMD_HDR_LEN;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send hci cmd 0x%04x, errno %d",
+                __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    while (1) {
+        for(i = 0; i < 5; i++) {
+        ret_val = usb_interrupt_msg(
+            fw_info->udev, fw_info->pipe_in,
+            (void *)(fw_info->rcv_pkt), PKT_LEN,
+            &ret_len, MSG_TO);
+            if (ret_val >= 0)
+                break;
+        }
+
+        if (ret_val < 0) {
+            RTKBT_ERR("%s: Failed to receive hci event, errno %d",
+                __func__, ret_val);
+            return ret_val;
+        }
+
+        if ((CMD_CMP_EVT == fw_info->evt_hdr->evt) &&
+              (fw_info->cmd_hdr->opcode == fw_info->cmd_cmp->opcode)) {
+                break;
+        }
+        else if(resume_check) {
+            rtk_skb_copy = bt_skb_alloc((ret_len), GFP_ATOMIC);
+            if (!rtk_skb_copy) {
+              RTKBT_ERR("%s: Failed to allocate mem", __func__);
+              return 2;
+            }
+
+            memcpy(skb_put(rtk_skb_copy, ret_len), fw_info->rcv_pkt, ret_len);
+            memcpy(skb_push(rtk_skb_copy, 1), &pkt_type, 1);
+            rtk_enqueue(rtk_skb_copy);
+
+            rtk_skb_copy = NULL;
+            wake_up_interruptible(&btchr_read_wait);
+        }
+    }
+
+    patch_entry = fw_info->patch_entry;
+    read_ver_rsp = (struct hci_rp_read_local_version *)(fw_info->rsp_para);
+
+    RTKBT_INFO("%s: Controller lmp = 0x%04x, patch lmp = 0x%04x, default patch lmp = 0x%04x",
+            __func__, read_ver_rsp->lmp_subver, patch_entry->lmp_sub, patch_entry->lmp_sub_default);
+
+    if (read_ver_rsp->lmp_subver == patch_entry->lmp_sub_default) {
+        RTKBT_INFO("%s: Cold BT controller startup", __func__);
+
+        return 2;
+
+    } else if (read_ver_rsp->lmp_subver != patch_entry->lmp_sub) {
+        RTKBT_INFO("%s: Warm BT controller startup with updated lmp", __func__);
+        return 1;
+    } else {
+        RTKBT_INFO("%s: Warm BT controller startup with same lmp", __func__);
+        return 0;
+    }
+}
+
+#if SET_WAKEUP_DEVICE
+int set_wakeup_device(firmware_info* fw_info, uint8_t* wakeup_bdaddr)
+{
+    struct rtk_eversion_evt *ever_evt;
+    int ret_val;
+
+    if (!fw_info)
+        return -ENODEV;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_VENDOR_ADD_WAKE_UP_DEVICE);
+    fw_info->cmd_hdr->plen = 7;
+    memcpy(fw_info->req_para, wakeup_bdaddr, 7);
+    fw_info->pkt_len = CMD_HDR_LEN + 7;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send hci cmd 0x%04x, errno %d\n",
+            __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    ret_val = rcv_hci_evt(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to receive hci event, errno %d\n",__func__, ret_val);
+        return ret_val;
+    }
+
+    ever_evt = (struct rtk_eversion_evt *)(fw_info->rsp_para);
+
+    RTKBT_DBG("%s: status %d, eversion %d", __func__, ever_evt->status, ever_evt->version);
+    return ret_val;
+}
+#endif
+
+/*reset_channel to recover the communication between wifi 8192eu with 8761 bt controller in case of geteversion error*/
+
+int reset_channel(firmware_info* fw_info)
+{
+    struct rtk_reset_evt *ever_evt;
+    int ret_val;
+
+    if (!fw_info)
+        return -ENODEV;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_VENDOR_RESET);
+    fw_info->cmd_hdr->plen = 0;
+    fw_info->pkt_len = CMD_HDR_LEN;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send  hci cmd 0x%04x, errno %d",
+                __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    ret_val = rcv_hci_evt(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to receive  hci event, errno %d",
+                __func__, ret_val);
+        return ret_val;
+    }
+
+    ever_evt = (struct rtk_reset_evt *)(fw_info->rsp_para);
+
+    RTKBT_INFO("%s: status %d ", __func__, ever_evt->status);
+
+    //sleep 300ms for channel reset.
+    msleep(300);
+    RTKBT_INFO("%s: Wait channel reset for 300ms",__func__);
+
+    return ret_val;
+}
+
+int read_localversion(firmware_info* fw_info)
+{
+    struct rtk_localversion_evt *ever_evt;
+    int ret_val;
+
+    if (!fw_info)
+        return -ENODEV;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_VENDOR_READ_LMP_VERISION);
+    fw_info->cmd_hdr->plen = 0;
+    fw_info->pkt_len = CMD_HDR_LEN;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send  hci cmd 0x%04x, errno %d",
+                __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    ret_val = rcv_hci_evt(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to receive  hci event, errno %d",
+                __func__, ret_val);
+        return ret_val;
+    }
+
+    ever_evt = (struct rtk_localversion_evt *)(fw_info->rsp_para);
+
+    RTKBT_INFO("%s: status %d ", __func__, ever_evt->status);
+    RTKBT_INFO("%s: hci_version %d ", __func__, ever_evt->hci_version);
+    RTKBT_INFO("%s: hci_revision %d ", __func__, ever_evt->hci_revision);
+    RTKBT_INFO("%s: lmp_version %d ", __func__, ever_evt->lmp_version);
+    RTKBT_INFO("%s: lmp_subversion %d ", __func__, ever_evt->lmp_subversion);
+    RTKBT_INFO("%s: lmp_manufacture %d ", __func__, ever_evt->lmp_manufacture);
+    //sleep 300ms for channel reset.
+    msleep(300);
+    RTKBT_INFO("%s: Wait channel reset for 300ms",__func__);
+
+    return ret_val;
+}
+
+int get_eversion(firmware_info* fw_info)
+{
+    struct rtk_eversion_evt *ever_evt;
+    int ret_val;
+
+    if (!fw_info)
+        return -ENODEV;
+
+    fw_info->cmd_hdr->opcode = cpu_to_le16(HCI_VENDOR_READ_RTK_ROM_VERISION);
+    fw_info->cmd_hdr->plen = 0;
+    fw_info->pkt_len = CMD_HDR_LEN;
+
+    ret_val = send_hci_cmd(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to send hci cmd 0x%04x, errno %d",
+                __func__, fw_info->cmd_hdr->opcode, ret_val);
+        return ret_val;
+    }
+
+    ret_val = rcv_hci_evt(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to receive hci event, errno %d",
+                __func__, ret_val);
+        return ret_val;
+    }
+
+    ever_evt = (struct rtk_eversion_evt *)(fw_info->rsp_para);
+
+    RTKBT_INFO("%s: status %d, eversion %d", __func__, ever_evt->status, ever_evt->version);
+
+    if (ever_evt->status)
+        fw_info->patch_entry->eversion = 0;
+    else
+        fw_info->patch_entry->eversion = ever_evt->version;
+
+    return ret_val;
+}
+
+void rtk_update_altsettings(patch_info *patch_entry, const unsigned char* org_config_buf, int org_config_len, unsigned char ** new_config_buf_ptr, int *new_config_len_ptr)
+{
+    static unsigned char config_buf[1024];
+    unsigned short offset[256];
+    unsigned char val[256];
+
+    struct rtk_bt_vendor_config* config = (struct rtk_bt_vendor_config*) config_buf;
+    struct rtk_bt_vendor_config_entry* entry = config->entry;
+
+    int count = 0,temp = 0, i = 0, j;
+
+    memset(config_buf, 0, sizeof(config_buf));
+    memset(offset, 0, sizeof(offset));
+    memset(val, 0, sizeof(val));
+
+    memcpy(config_buf, org_config_buf, org_config_len);
+    *new_config_buf_ptr = config_buf;
+    *new_config_len_ptr = org_config_len;
+
+    count = getAltSettings(patch_entry, offset, sizeof(offset)/sizeof(unsigned short));
+    if(count <= 0){
+        RTKBT_INFO("rtk_update_altsettings: No AltSettings");
+        return;
+    }else{
+        RTKBT_INFO("rtk_update_altsettings: %d AltSettings", count);
+    }
+
+    RTKBT_INFO("ORG Config len=%08x:\n", org_config_len);
+    for(i=0;i<=org_config_len;i+=0x10)
+    {
+        RTKBT_INFO("%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, \
+            config_buf[i], config_buf[i+1], config_buf[i+2], config_buf[i+3], config_buf[i+4], config_buf[i+5], config_buf[i+6], config_buf[i+7], \
+            config_buf[i+8], config_buf[i+9], config_buf[i+10], config_buf[i+11], config_buf[i+12], config_buf[i+13], config_buf[i+14], config_buf[i+15]);
+    }
+
+    if (config->data_len != org_config_len - sizeof(struct rtk_bt_vendor_config))
+    {
+        //RTKBT_ERR("rtk_update_altsettings: config len(%x) is not right(%x)", config->data_len, org_config_len-sizeof(struct rtk_bt_vendor_config));
+        return;
+    }
+
+    for (i=0; i<config->data_len;)
+    {
+        for(j = 0; j < count;j++)
+        {
+            if(entry->offset == offset[j])
+                offset[j] = 0;
+        }
+        if(getAltSettingVal(patch_entry, entry->offset, val) == entry->entry_len){
+            RTKBT_INFO("rtk_update_altsettings: replace %04x[%02x]", entry->offset, entry->entry_len);
+            memcpy(entry->entry_data, val, entry->entry_len);
+        }
+        temp = entry->entry_len + sizeof(struct rtk_bt_vendor_config_entry);
+        i += temp;
+        entry = (struct rtk_bt_vendor_config_entry*)((uint8_t*)entry + temp);
+    }
+    for(j = 0; j < count;j++){
+        if(offset[j] == 0)
+            continue;
+        entry->entry_len = getAltSettingVal(patch_entry, offset[j], val);
+        if(entry->entry_len <= 0)
+            continue;
+        entry->offset = offset[j];
+        memcpy(entry->entry_data, val, entry->entry_len);
+        RTKBT_INFO("rtk_update_altsettings: add %04x[%02x]", entry->offset, entry->entry_len);
+        temp = entry->entry_len + sizeof(struct rtk_bt_vendor_config_entry);
+        i += temp;
+        entry = (struct rtk_bt_vendor_config_entry*)((uint8_t*)entry + temp);
+    }
+    config->data_len = i;
+    *new_config_buf_ptr = config_buf;
+    *new_config_len_ptr = config->data_len+sizeof(struct rtk_bt_vendor_config);
+
+    return;
+}
+
+int load_firmware(firmware_info *fw_info, uint8_t **buff)
+{
+    const struct firmware *fw, *cfg;
+    struct usb_device *udev;
+    patch_info *patch_entry;
+    char *config_name, *fw_name;
+    int fw_len = 0;
+    int ret_val;
+
+    int config_len = 0, buf_len = -1;
+    uint8_t *buf = *buff, *config_file_buf = NULL;
+    uint8_t *epatch_buf = NULL;
+
+    struct rtk_epatch *epatch_info = NULL;
+    uint8_t need_download_fw = 1;
+    struct rtk_extension_entry patch_lmp = {0};
+    struct rtk_epatch_entry *p_epatch_entry = NULL;
+    uint16_t lmp_version;
+    //uint8_t use_mp_fw = 0;
+    RTKBT_DBG("%s: start", __func__);
+
+    udev = fw_info->udev;
+    patch_entry = fw_info->patch_entry;
+    lmp_version = patch_entry->lmp_sub_default;
+    config_name = patch_entry->config_name;
+/* 1 Mptool Fw; 0 Normal Fw */
+    if(DRV_MP_MODE == mp_drv_mode){
+        fw_name = patch_entry->mp_patch_name;
+    }else{
+        fw_name = patch_entry->patch_name;
+    }
+
+    RTKBT_INFO("%s: Default lmp version = 0x%04x, config file name[%s], "
+            "fw file name[%s]", __func__, lmp_version,config_name, fw_name);
+
+    ret_val = request_firmware(&cfg, config_name, &udev->dev);
+    if (ret_val < 0)
+        config_len = 0;
+    else {
+        int i;
+        rtk_update_altsettings(patch_entry, cfg->data, cfg->size, &config_file_buf, &config_len);
+
+        RTKBT_INFO("Final Config len=%08x:\n", config_len);
+        for(i=0;i<=config_len;i+=0x10)
+        {
+            RTKBT_INFO("%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, \
+                config_file_buf[i], config_file_buf[i+1], config_file_buf[i+2], config_file_buf[i+3], config_file_buf[i+4], config_file_buf[i+5], config_file_buf[i+6], config_file_buf[i+7], \
+                config_file_buf[i+8], config_file_buf[i+9], config_file_buf[i+10], config_file_buf[i+11], config_file_buf[i+12], config_file_buf[i+13], config_file_buf[i+14], config_file_buf[i+15]);
+        }
+
+        release_firmware(cfg);
+    }
+
+    ret_val = request_firmware(&fw, fw_name, &udev->dev);
+    if (ret_val < 0)
+        goto fw_fail;
+    else {
+        epatch_buf = vmalloc(fw->size);
+        RTKBT_INFO("%s: epatch_buf = vmalloc(fw->size, GFP_KERNEL)", __func__);
+        if (!epatch_buf) {
+            release_firmware(fw);
+            goto fw_fail;
+        }
+        memcpy(epatch_buf, fw->data, fw->size);
+        fw_len = fw->size;
+        buf_len = fw_len + config_len;
+        release_firmware(fw);
+    }
+
+    if (lmp_version == ROM_LMP_8723a) {
+        RTKBT_DBG("%s: 8723a -> use old style patch", __func__);
+        if (!memcmp(epatch_buf, RTK_EPATCH_SIGNATURE, 8)) {
+            RTKBT_ERR("%s: 8723a check signature error", __func__);
+            need_download_fw = 0;
+        } else {
+            if (!(buf = kzalloc(buf_len, GFP_KERNEL))) {
+                RTKBT_ERR("%s: Failed to allocate mem for fw&config", __func__);
+                buf_len = -1;
+            } else {
+                RTKBT_DBG("%s: 8723a -> fw copy directly", __func__);
+                memcpy(buf, epatch_buf, buf_len);
+                patch_entry->lmp_sub = *(uint16_t *)(buf + buf_len - config_len - 4);
+                RTKBT_DBG("%s: Config lmp version = 0x%04x", __func__,
+                        patch_entry->lmp_sub);
+                vfree(epatch_buf);
+                RTKBT_INFO("%s:ROM_LMP_8723a vfree(epatch_buf)", __func__);
+                epatch_buf = NULL;
+                if (config_len)
+                    memcpy(buf + buf_len - config_len, config_file_buf, config_len);
+            }
+        }
+    } else {
+        RTKBT_DBG("%s: Not 8723a -> use new style patch", __func__);
+
+        RTKBT_DBG("%s: reset_channel before get_eversion from bt controller", __func__);
+        ret_val = reset_channel(fw_info);
+        if (ret_val < 0) {
+            RTKBT_ERR("%s: Failed to reset_channel, errno %d", __func__, ret_val);
+            goto fw_fail;
+        }
+//        read_localversion(fw_info);
+        RTKBT_DBG("%s: get_eversion from bt controller", __func__);
+
+        ret_val = get_eversion(fw_info);
+        if (ret_val < 0) {
+            RTKBT_ERR("%s: Failed to get eversion, errno %d", __func__, ret_val);
+            goto fw_fail;
+        }
+        RTKBT_DBG("%s: Get eversion =%d", __func__, patch_entry->eversion);
+        if (memcmp(epatch_buf + buf_len - config_len - 4 , EXTENSION_SECTION_SIGNATURE, 4)) {
+            RTKBT_ERR("%s: Failed to check extension section signature", __func__);
+            need_download_fw = 0;
+        } else {
+            uint8_t *temp;
+            temp = epatch_buf+buf_len-config_len - 5;
+            do {
+                if (*temp == 0x00) {
+                    patch_lmp.opcode = *temp;
+                    patch_lmp.length = *(temp-1);
+                    if ((patch_lmp.data = kzalloc(patch_lmp.length, GFP_KERNEL))) {
+                        int k;
+                        for (k = 0; k < patch_lmp.length; k++) {
+                            *(patch_lmp.data+k) = *(temp-2-k);
+                            RTKBT_DBG("data = 0x%x", *(patch_lmp.data+k));
+                        }
+                    }
+                    RTKBT_DBG("%s: opcode = 0x%x, length = 0x%x, data = 0x%x", __func__,
+                            patch_lmp.opcode, patch_lmp.length, *(patch_lmp.data));
+                    break;
+                }
+                temp -= *(temp-1) + 2;
+            } while (*temp != 0xFF);
+
+            if (lmp_version != project_id[*(patch_lmp.data)]) {
+                RTKBT_ERR("%s: Default lmp_version 0x%04x, project_id[%d] 0x%04x "
+                        "-> not match", __func__, lmp_version, *(patch_lmp.data),project_id[*(patch_lmp.data)]);
+                if (patch_lmp.data)
+                    kfree(patch_lmp.data);
+                need_download_fw = 0;
+            } else {
+                RTKBT_INFO("%s: Default lmp_version 0x%04x, project_id[%d] 0x%04x "
+                        "-> match", __func__, lmp_version, *(patch_lmp.data), project_id[*(patch_lmp.data)]);
+                if (patch_lmp.data)
+                    kfree(patch_lmp.data);
+                if (memcmp(epatch_buf, RTK_EPATCH_SIGNATURE, 8)) {
+                    RTKBT_ERR("%s: Check signature error", __func__);
+                    need_download_fw = 0;
+                } else {
+                    epatch_info = (struct rtk_epatch*)epatch_buf;
+                    patch_entry->lmp_sub = (uint16_t)epatch_info->fw_version;
+
+                    RTKBT_DBG("%s: lmp version 0x%04x, fw_version 0x%x, "
+                            "number_of_total_patch %d", __func__,
+                            patch_entry->lmp_sub, epatch_info->fw_version,
+                            epatch_info->number_of_total_patch);
+
+                    /* Get right epatch entry */
+                    p_epatch_entry = get_fw_patch_entry(epatch_info, patch_entry->eversion);
+                    if (p_epatch_entry == NULL) {
+                        RTKBT_WARN("%s: Failed to get fw patch entry", __func__);
+                        ret_val = -1;
+                        goto fw_fail ;
+                    }
+
+                    buf_len = p_epatch_entry->patch_length + config_len;
+                    RTKBT_DBG("buf_len = 0x%x", buf_len);
+
+                    if (!(buf = kzalloc(buf_len, GFP_KERNEL))) {
+                        RTKBT_ERR("%s: Can't alloc memory for  fw&config", __func__);
+                        buf_len = -1;
+                    } else {
+                        memcpy(buf, &epatch_buf[p_epatch_entry->start_offset], p_epatch_entry->patch_length);
+                        memcpy(&buf[p_epatch_entry->patch_length-4], &epatch_info->fw_version, 4);
+                        kfree(p_epatch_entry);
+                    }
+                    vfree(epatch_buf);
+                    RTKBT_INFO("%s: vfree(epatch_buf)", __func__);
+                    epatch_buf = NULL;
+
+                    if (config_len)
+                        memcpy(&buf[buf_len - config_len], config_file_buf, config_len);
+                }
+            }
+        }
+    }
+
+    RTKBT_INFO("%s: fw%s exists, config file%s exists", __func__,
+            (buf_len > 0) ? "" : " not", (config_len > 0) ? "":" not");
+
+    if (buf && buf_len > 0 && need_download_fw)
+        *buff = buf;
+
+    RTKBT_DBG("%s: done", __func__);
+
+    return buf_len;
+
+fw_fail:
+    return ret_val;
+}
+
+#if SUSPNED_DW_FW
+static int load_suspend_firmware(firmware_info *fw_info, uint8_t **buff)
+{
+    const struct firmware *fw, *cfg;
+    struct usb_device *udev;
+    patch_info *patch_entry;
+    char config_name[100] = {0};
+    char fw_name[100] = {0};
+    int fw_len = 0;
+    int ret_val;
+
+    int config_len = 0, buf_len = -1;
+    uint8_t *buf = *buff, *config_file_buf = NULL;
+    uint8_t *epatch_buf = NULL;
+
+    struct rtk_epatch *epatch_info = NULL;
+    uint8_t need_download_fw = 1;
+    struct rtk_extension_entry patch_lmp = {0};
+    struct rtk_epatch_entry *p_epatch_entry = NULL;
+    uint16_t lmp_version;
+    RTKBT_DBG("%s: start", __func__);
+
+    udev = fw_info->udev;
+    patch_entry = fw_info->patch_entry;
+    lmp_version = patch_entry->lmp_sub_default;
+    sprintf(config_name, "%s_suspend", patch_entry->config_name);
+    sprintf(fw_name, "%s_suspend", patch_entry->patch_name);
+
+    RTKBT_INFO("%s: Default lmp version = 0x%04x, config file name[%s], "
+            "fw file name[%s]", __func__, lmp_version,config_name, fw_name);
+
+    ret_val = request_firmware(&cfg, config_name, &udev->dev);
+    if (ret_val < 0)
+        config_len = 0;
+    else {
+        int i;
+        rtk_update_altsettings(patch_entry, cfg->data, cfg->size, &config_file_buf, &config_len);
+
+        RTKBT_INFO("Final Config len=%08x:\n", config_len);
+        for(i=0;i<=config_len;i+=0x10)
+        {
+            RTKBT_INFO("%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, \
+                config_file_buf[i], config_file_buf[i+1], config_file_buf[i+2], config_file_buf[i+3], config_file_buf[i+4], config_file_buf[i+5], config_file_buf[i+6], config_file_buf[i+7], \
+                config_file_buf[i+8], config_file_buf[i+9], config_file_buf[i+10], config_file_buf[i+11], config_file_buf[i+12], config_file_buf[i+13], config_file_buf[i+14], config_file_buf[i+15]);
+        }
+
+        release_firmware(cfg);
+    }
+
+    ret_val = request_firmware(&fw, fw_name, &udev->dev);
+    if (ret_val < 0)
+        goto fw_fail;
+    else {
+        epatch_buf = vmalloc(fw->size);
+        RTKBT_INFO("%s: epatch_buf = vmalloc(fw->size, GFP_KERNEL)", __func__);
+        if (!epatch_buf) {
+            release_firmware(fw);
+            goto fw_fail;
+        }
+        memcpy(epatch_buf, fw->data, fw->size);
+        fw_len = fw->size;
+        buf_len = fw_len + config_len;
+        release_firmware(fw);
+    }
+
+    RTKBT_DBG("%s: Not 8723a -> use new style patch", __func__);
+
+    RTKBT_DBG("%s: get_eversion from bt controller", __func__);
+
+    ret_val = get_eversion(fw_info);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to get eversion, errno %d", __func__, ret_val);
+        goto fw_fail;
+    }
+    RTKBT_DBG("%s: Get eversion =%d", __func__, patch_entry->eversion);
+    if (memcmp(epatch_buf + buf_len - config_len - 4 , EXTENSION_SECTION_SIGNATURE, 4)) {
+        RTKBT_ERR("%s: Failed to check extension section signature", __func__);
+        need_download_fw = 0;
+    } else {
+        uint8_t *temp;
+        temp = epatch_buf+buf_len-config_len - 5;
+        do {
+            if (*temp == 0x00) {
+                patch_lmp.opcode = *temp;
+                patch_lmp.length = *(temp-1);
+                if ((patch_lmp.data = kzalloc(patch_lmp.length, GFP_KERNEL))) {
+                    int k;
+                    for (k = 0; k < patch_lmp.length; k++) {
+                        *(patch_lmp.data+k) = *(temp-2-k);
+                        RTKBT_DBG("data = 0x%x", *(patch_lmp.data+k));
+                    }
+                }
+                RTKBT_DBG("%s: opcode = 0x%x, length = 0x%x, data = 0x%x", __func__,
+                    patch_lmp.opcode, patch_lmp.length, *(patch_lmp.data));
+                break;
+            }
+            temp -= *(temp-1) + 2;
+        } while (*temp != 0xFF);
+
+        if (lmp_version != project_id[*(patch_lmp.data)]) {
+            RTKBT_ERR("%s: Default lmp_version 0x%04x, project_id[%d] 0x%04x "
+                "-> not match", __func__, lmp_version, *(patch_lmp.data),project_id[*(patch_lmp.data)]);
+            if (patch_lmp.data)
+                kfree(patch_lmp.data);
+            need_download_fw = 0;
+        } else {
+            RTKBT_INFO("%s: Default lmp_version 0x%04x, project_id[%d] 0x%04x "
+                "-> match", __func__, lmp_version, *(patch_lmp.data), project_id[*(patch_lmp.data)]);
+            if (patch_lmp.data)
+                kfree(patch_lmp.data);
+            if (memcmp(epatch_buf, RTK_EPATCH_SIGNATURE, 8)) {
+                RTKBT_ERR("%s: Check signature error", __func__);
+                need_download_fw = 0;
+            } else {
+                epatch_info = (struct rtk_epatch*)epatch_buf;
+                patch_entry->lmp_sub = (uint16_t)epatch_info->fw_version;
+
+                RTKBT_DBG("%s: lmp version 0x%04x, fw_version 0x%x, "
+                    "number_of_total_patch %d", __func__,
+                    patch_entry->lmp_sub, epatch_info->fw_version,
+                    epatch_info->number_of_total_patch);
+
+             /* Get right epatch entry */
+                p_epatch_entry = get_fw_patch_entry(epatch_info, patch_entry->eversion);
+                if (p_epatch_entry == NULL) {
+                    RTKBT_WARN("%s: Failed to get fw patch entry", __func__);
+                    ret_val = -1;
+                    goto fw_fail ;
+                }
+
+                buf_len = p_epatch_entry->patch_length + config_len;
+                RTKBT_DBG("buf_len = 0x%x", buf_len);
+
+                if (!(buf = kzalloc(buf_len, GFP_KERNEL))) {
+                    RTKBT_ERR("%s: Can't alloc memory for  fw&config", __func__);
+                    buf_len = -1;
+                } else {
+                    memcpy(buf, &epatch_buf[p_epatch_entry->start_offset], p_epatch_entry->patch_length);
+                    memcpy(&buf[p_epatch_entry->patch_length-4], &epatch_info->fw_version, 4);
+                    kfree(p_epatch_entry);
+                }
+                vfree(epatch_buf);
+                RTKBT_INFO("%s: vfree(epatch_buf)", __func__);
+                epatch_buf = NULL;
+
+                if (config_len)
+                    memcpy(&buf[buf_len - config_len], config_file_buf, config_len);
+            }
+        }
+    }
+
+    RTKBT_INFO("%s: fw%s exists, config file%s exists", __func__,
+            (buf_len > 0) ? "" : " not", (config_len > 0) ? "":" not");
+
+    if (buf && buf_len > 0 && need_download_fw)
+        *buff = buf;
+
+    RTKBT_DBG("%s: done", __func__);
+
+    return buf_len;
+
+fw_fail:
+    return ret_val;
+}
+#endif
+
+int get_firmware(firmware_info *fw_info, int cached)
+{
+    patch_info *patch_entry = fw_info->patch_entry;
+
+    RTKBT_INFO("%s: start, cached %d,patch_entry->fw_len= %d", __func__, cached,patch_entry->fw_len);
+
+    if (cached > 0) {
+        if (patch_entry->fw_len > 0) {
+            fw_info->fw_data = kzalloc(patch_entry->fw_len, GFP_KERNEL);
+            if (!fw_info->fw_data)
+                return -ENOMEM;
+            memcpy(fw_info->fw_data, patch_entry->fw_cache, patch_entry->fw_len);
+            fw_info->fw_len = patch_entry->fw_len;
+        } else {
+            fw_info->fw_len = load_firmware(fw_info, &fw_info->fw_data);
+            if (fw_info->fw_len <= 0)
+                return -1;
+        }
+    } else {
+        fw_info->fw_len = load_firmware(fw_info, &fw_info->fw_data);
+        if (fw_info->fw_len <= 0)
+            return -1;
+    }
+
+    return 0;
+}
+
+#if SUSPNED_DW_FW
+static int get_suspend_firmware(firmware_info *fw_info, int cached)
+{
+    patch_info *patch_entry = fw_info->patch_entry;
+
+    RTKBT_INFO("%s: start, cached %d,patch_entry->fw_len= %d", __func__, cached,patch_entry->fw_len);
+
+    if (cached > 0) {
+        if (patch_entry->fw_len > 0) {
+            fw_info->fw_data = kzalloc(patch_entry->fw_len, GFP_KERNEL);
+            if (!fw_info->fw_data)
+                return -ENOMEM;
+            memcpy(fw_info->fw_data, patch_entry->fw_cache, patch_entry->fw_len);
+            fw_info->fw_len = patch_entry->fw_len;
+        } else {
+            fw_info->fw_len = load_suspend_firmware(fw_info, &fw_info->fw_data);
+            if (fw_info->fw_len <= 0)
+                return -1;
+        }
+    } else {
+        fw_info->fw_len = load_suspend_firmware(fw_info, &fw_info->fw_data);
+        if (fw_info->fw_len <= 0)
+            return -1;
+    }
+
+    return 0;
+}
+#endif
+
+/*
+ * Open the log message only if in debugging,
+ * or it will decelerate download procedure.
+ */
+int download_data(firmware_info *fw_info)
+{
+    download_cp *cmd_para;
+    download_rp *evt_para;
+    uint8_t *pcur;
+    int pkt_len, frag_num, frag_len;
+    int i, ret_val;
+    int ncmd = 1, step = 1;
+
+    RTKBT_DBG("%s: start", __func__);
+
+    cmd_para = (download_cp *)fw_info->req_para;
+    evt_para = (download_rp *)fw_info->rsp_para;
+    pcur = fw_info->fw_data;
+    pkt_len = CMD_HDR_LEN + sizeof(download_cp);
+    frag_num = fw_info->fw_len / PATCH_SEG_MAX + 1;
+    frag_len = PATCH_SEG_MAX;
+
+    for (i = 0; i < frag_num; i++) {
+        cmd_para->index = i?((i-1)%0x7f+1):0;
+        if (i == (frag_num - 1)) {
+            cmd_para->index |= DATA_END;
+            frag_len = fw_info->fw_len % PATCH_SEG_MAX;
+            pkt_len -= (PATCH_SEG_MAX - frag_len);
+        }
+        fw_info->cmd_hdr->opcode = cpu_to_le16(DOWNLOAD_OPCODE);
+        fw_info->cmd_hdr->plen = sizeof(uint8_t) + frag_len;
+        fw_info->pkt_len = pkt_len;
+        memcpy(cmd_para->data, pcur, frag_len);
+
+        if (step > 0) {
+            ret_val = send_hci_cmd(fw_info);
+            if (ret_val < 0) {
+                RTKBT_DBG("%s: Failed to send frag num %d", __func__, cmd_para->index);
+                return ret_val;
+            } else
+                RTKBT_DBG("%s: Send frag num %d", __func__, cmd_para->index);
+
+            if (--step > 0 && i < frag_num - 1) {
+                RTKBT_DBG("%s: Continue to send frag num %d", __func__, cmd_para->index + 1);
+                pcur += PATCH_SEG_MAX;
+                continue;
+            }
+        }
+
+        while (ncmd > 0) {
+            ret_val = rcv_hci_evt(fw_info);
+            if (ret_val < 0) {
+                RTKBT_ERR("%s: rcv_hci_evt err %d", __func__, ret_val);
+                return ret_val;
+            } else {
+                RTKBT_DBG("%s: Receive acked frag num %d", __func__, evt_para->index);
+                ncmd--;
+            }
+
+            if (0 != evt_para->status) {
+                RTKBT_ERR("%s: Receive acked frag num %d, err status %d",
+                        __func__, ret_val, evt_para->status);
+                return -1;
+            }
+
+            if ((evt_para->index & DATA_END) || (evt_para->index == frag_num - 1)) {
+                RTKBT_DBG("%s: Receive last acked index %d", __func__, evt_para->index);
+                goto end;
+            }
+        }
+
+        ncmd = step = fw_info->cmd_cmp->ncmd;
+        pcur += PATCH_SEG_MAX;
+        RTKBT_DBG("%s: HCI command packet num %d", __func__, ncmd);
+    }
+
+    /*
+     * It is tricky that Host cannot receive DATA_END index from BT
+     * controller, at least for 8723au. We are doomed if failed.
+     */
+#if 0
+    /* Continue to receive the responsed events until last index occurs */
+    if (i == frag_num) {
+        RTKBT_DBG("%s: total frag count %d", __func__, frag_num);
+        while (!(evt_para->index & DATA_END)) {
+            ret_val = rcv_hci_evt(fw_info);
+            if (ret_val < 0) {
+                RTKBT_ERR("%s: rcv_hci_evt err %d", __func__, ret_val);
+                return ret_val;
+            }
+            if (0 != evt_para->status)
+                return -1;
+            RTKBT_DBG("%s: continue to receive acked frag num %d", __func__, evt_para->index);
+        }
+    }
+#endif
+end:
+    RTKBT_INFO("%s: done, sent %d frag pkts, received %d frag events",
+            __func__, cmd_para->index, evt_para->index);
+    return fw_info->fw_len;
+}
+
+int download_patch(firmware_info *fw_info, int cached)
+{
+    int ret_val = 0;
+
+    RTKBT_DBG("%s: Download fw patch start, cached %d", __func__, cached);
+
+    if (!fw_info || !fw_info->patch_entry) {
+        RTKBT_ERR("%s: No patch entry exists(fw_info %p)", __func__, fw_info);
+        ret_val = -1;
+        goto end;
+    }
+
+    /*
+     * step1: get local firmware if existed
+     * step2: check firmware version
+     * step3: download firmware if updated
+     */
+    ret_val = get_firmware(fw_info, cached);
+    if (ret_val < 0) {
+        RTKBT_ERR("%s: Failed to get firmware", __func__);
+        goto end;
+    }
+
+#if SUSPNED_DW_FW
+    if(fw_info_4_suspend) {
+        RTKBT_DBG("%s: get suspend fw first cached %d", __func__, cached);
+        ret_val = get_suspend_firmware(fw_info_4_suspend, cached);
+        if (ret_val < 0) {
+            RTKBT_ERR("%s: Failed to get suspend firmware", __func__);
+            goto end;
+        }
+    }
+#endif
+
+    /*check the length of fw to be download*/
+    RTKBT_DBG("%s: Check fw_info->fw_len:%d max_patch_size %d", __func__, fw_info->fw_len, fw_info->patch_entry->max_patch_size);
+    if (fw_info->fw_len > fw_info->patch_entry->max_patch_size) {
+        RTKBT_ERR("%s: Total length of fw&config(%08x) larger than max_patch_size 0x%08x", __func__, fw_info->fw_len, fw_info->patch_entry->max_patch_size);
+        ret_val = -1;
+        goto free;
+    }
+
+    ret_val = check_fw_version(fw_info, false);
+
+    if (2 == ret_val) {
+        RTKBT_ERR("%s: Cold reset bt chip only download", __func__);
+        ret_val = download_data(fw_info);
+        if (ret_val > 0)
+            RTKBT_ERR("%s: Download fw patch done, fw len %d", __func__, ret_val);
+    } else if(1 == ret_val){
+        //   reset bt chip to update Fw patch
+        ret_val = reset_controller(fw_info);
+        RTKBT_ERR("%s: reset bt chip to update Fw patch, fw len %d", __func__, ret_val);
+        ret_val = download_data(fw_info);
+        if (ret_val > 0)
+                RTKBT_ERR("%s: Download fw patch done, fw len %d", __func__, ret_val);
+    }
+
+
+free:
+    /* Free fw data after download finished */
+    kfree(fw_info->fw_data);
+    fw_info->fw_data = NULL;
+
+end:
+    return ret_val;
+}
+
+#if SUSPNED_DW_FW
+static int download_suspend_patch(firmware_info *fw_info, int cached)
+{
+    int ret_val = 0;
+
+    RTKBT_DBG("%s: Download fw patch start, cached %d", __func__, cached);
+
+    if (!fw_info || !fw_info->patch_entry) {
+        RTKBT_ERR("%s: No patch entry exists(fw_info %p)", __func__, fw_info);
+        ret_val = -1;
+        goto end;
+    }
+
+    /*check the length of fw to be download*/
+    RTKBT_DBG("%s:Check RTK_PATCH_LENGTH fw_info->fw_len:%d", __func__,fw_info->fw_len);
+    if (fw_info->fw_len > fw_info->patch_entry->max_patch_size || fw_info->fw_len == 0) {
+        RTKBT_ERR("%s: Total length of fw&config(%08x) larger than max_patch_size 0x%08x", __func__, fw_info->fw_len, fw_info->patch_entry->max_patch_size);
+        ret_val = -1;
+        goto free;
+    }
+
+    ret_val = check_fw_version(fw_info, false);
+
+    if (2 == ret_val) {
+        RTKBT_ERR("%s: Cold reset bt chip only download", __func__);
+        ret_val = download_data(fw_info);
+        if (ret_val > 0)
+            RTKBT_ERR("%s: Download fw patch done, fw len %d", __func__, ret_val);
+    } else if(1 == ret_val){
+        //   reset bt chip to update Fw patch
+        ret_val = reset_controller(fw_info);
+        RTKBT_ERR("%s: reset bt chip to update Fw patch, fw len %d", __func__, ret_val);
+        ret_val = download_data(fw_info);
+        if (ret_val > 0)
+                RTKBT_ERR("%s: Download fw patch done, fw len %d", __func__, ret_val);
+    }
+
+
+free:
+    /* Free fw data after download finished */
+    kfree(fw_info->fw_data);
+    fw_info->fw_data = NULL;
+
+end:
+    return ret_val;
+}
+
+static void suspend_firmware_info_init(firmware_info *fw_info)
+{
+    RTKBT_DBG("%s: start", __func__);
+    if(!fw_info)
+        return;
+
+    fw_info_4_suspend= kzalloc(sizeof(*fw_info), GFP_KERNEL);
+    if (!fw_info_4_suspend)
+        goto error;
+
+    fw_info_4_suspend->send_pkt = kzalloc(PKT_LEN, GFP_KERNEL);
+    if (!fw_info_4_suspend->send_pkt) {
+        kfree(fw_info_4_suspend);
+        goto error;
+    }
+
+    fw_info_4_suspend->rcv_pkt = kzalloc(PKT_LEN, GFP_KERNEL);
+    if (!fw_info_4_suspend->rcv_pkt) {
+        kfree(fw_info_4_suspend->send_pkt);
+        kfree(fw_info_4_suspend);
+        goto error;
+    }
+
+    fw_info_4_suspend->patch_entry = get_suspend_fw_table_entry(fw_info->udev);
+    if (!fw_info_4_suspend->patch_entry) {
+        kfree(fw_info_4_suspend->rcv_pkt);
+        kfree(fw_info_4_suspend->send_pkt);
+        kfree(fw_info_4_suspend);
+        goto error;
+    }
+
+    fw_info_4_suspend->intf = fw_info->intf;
+    fw_info_4_suspend->udev = fw_info->udev;
+    fw_info_4_suspend->cmd_hdr = (struct hci_command_hdr *)(fw_info_4_suspend->send_pkt);
+    fw_info_4_suspend->evt_hdr = (struct hci_event_hdr *)(fw_info_4_suspend->rcv_pkt);
+    fw_info_4_suspend->cmd_cmp = (struct hci_ev_cmd_complete *)(fw_info_4_suspend->rcv_pkt + EVT_HDR_LEN);
+    fw_info_4_suspend->req_para = fw_info_4_suspend->send_pkt + CMD_HDR_LEN;
+    fw_info_4_suspend->rsp_para = fw_info_4_suspend->rcv_pkt + EVT_HDR_LEN + CMD_CMP_LEN;
+    fw_info_4_suspend->pipe_in = fw_info->pipe_in;
+    fw_info_4_suspend->pipe_out = fw_info->pipe_out;
+
+    return;
+error:
+    RTKBT_DBG("%s: fail !", __func__);
+    fw_info_4_suspend = NULL;
+    return;
+}
+#endif
+
+#if SET_WAKEUP_DEVICE
+static void set_wakeup_device_from_conf(firmware_info *fw_info)
+{
+    uint8_t paired_wakeup_bdaddr[7];
+    uint8_t num = 0;
+    int i;
+    struct file *fp;
+    mm_segment_t fs;
+    loff_t pos;
+
+    memset(paired_wakeup_bdaddr, 0, 7);
+    fp = filp_open(SET_WAKEUP_DEVICE_CONF, O_RDWR, 0);
+    if (!IS_ERR(fp)) {
+        fs = get_fs();
+        set_fs(KERNEL_DS);
+        pos = 0;
+        //read number
+        vfs_read(fp, &num, 1, &pos);
+        RTKBT_DBG("read number = %d", num);
+        if(num) {
+            for(i = 0; i < num; i++) {
+            vfs_read(fp, paired_wakeup_bdaddr, 7, &pos);
+            RTKBT_DBG("paired_wakeup_bdaddr: 0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
+                paired_wakeup_bdaddr[1],paired_wakeup_bdaddr[2],paired_wakeup_bdaddr[3],
+                paired_wakeup_bdaddr[4],paired_wakeup_bdaddr[5],paired_wakeup_bdaddr[6]);
+            set_wakeup_device(fw_info, paired_wakeup_bdaddr);
+            }
+        }
+        filp_close(fp, NULL);
+        set_fs(fs);
+    }
+    else {
+        RTKBT_ERR("open wakeup config file fail! errno = %ld", PTR_ERR(fp));
+    }
+}
+#endif
+
+firmware_info *firmware_info_init(struct usb_interface *intf)
+{
+    struct usb_device *udev = interface_to_usbdev(intf);
+    firmware_info *fw_info;
+
+    RTKBT_DBG("%s: start", __func__);
+
+    fw_info = kzalloc(sizeof(*fw_info), GFP_KERNEL);
+    if (!fw_info)
+        return NULL;
+
+    fw_info->send_pkt = kzalloc(PKT_LEN, GFP_KERNEL);
+    if (!fw_info->send_pkt) {
+        kfree(fw_info);
+        return NULL;
+    }
+
+    fw_info->rcv_pkt = kzalloc(PKT_LEN, GFP_KERNEL);
+    if (!fw_info->rcv_pkt) {
+        kfree(fw_info->send_pkt);
+        kfree(fw_info);
+        return NULL;
+    }
+
+    fw_info->patch_entry = get_fw_table_entry(udev);
+    if (!fw_info->patch_entry) {
+        kfree(fw_info->rcv_pkt);
+        kfree(fw_info->send_pkt);
+        kfree(fw_info);
+        return NULL;
+    }
+
+    fw_info->intf = intf;
+    fw_info->udev = udev;
+    fw_info->pipe_in = usb_rcvintpipe(fw_info->udev, INTR_EP);
+    fw_info->pipe_out = usb_sndctrlpipe(fw_info->udev, CTRL_EP);
+    fw_info->cmd_hdr = (struct hci_command_hdr *)(fw_info->send_pkt);
+    fw_info->evt_hdr = (struct hci_event_hdr *)(fw_info->rcv_pkt);
+    fw_info->cmd_cmp = (struct hci_ev_cmd_complete *)(fw_info->rcv_pkt + EVT_HDR_LEN);
+    fw_info->req_para = fw_info->send_pkt + CMD_HDR_LEN;
+    fw_info->rsp_para = fw_info->rcv_pkt + EVT_HDR_LEN + CMD_CMP_LEN;
+
+#if SUSPNED_DW_FW
+    suspend_firmware_info_init(fw_info);
+#endif
+
+#if BTUSB_RPM
+    RTKBT_INFO("%s: Auto suspend is enabled", __func__);
+    usb_enable_autosuspend(udev);
+    pm_runtime_set_autosuspend_delay(&(udev->dev), 2000);
+#else
+    RTKBT_INFO("%s: Auto suspend is disabled", __func__);
+    usb_disable_autosuspend(udev);
+#endif
+
+#if BTUSB_WAKEUP_HOST
+    device_wakeup_enable(&udev->dev);
+#endif
+
+    return fw_info;
+}
+
+void firmware_info_destroy(struct usb_interface *intf)
+{
+    firmware_info *fw_info;
+    struct usb_device *udev;
+    struct btusb_data *data;
+
+    udev = interface_to_usbdev(intf);
+    data = usb_get_intfdata(intf);
+
+    fw_info = data->fw_info;
+    if (!fw_info)
+        return;
+
+#if BTUSB_RPM
+    usb_disable_autosuspend(udev);
+#endif
+
+    /*
+     * In order to reclaim fw data mem, we free fw_data immediately
+     * after download patch finished instead of here.
+     */
+    kfree(fw_info->rcv_pkt);
+    kfree(fw_info->send_pkt);
+    kfree(fw_info);
+
+#if SUSPNED_DW_FW
+    if (!fw_info_4_suspend)
+        return;
+
+    kfree(fw_info_4_suspend->rcv_pkt);
+    kfree(fw_info_4_suspend->send_pkt);
+    kfree(fw_info_4_suspend->patch_entry);
+    kfree(fw_info_4_suspend);
+       fw_info_4_suspend = NULL;
+#endif
+}
+
+static struct usb_driver btusb_driver;
+
+static struct usb_device_id btusb_table[] = {
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
+                     USB_DEVICE_ID_MATCH_INT_INFO,
+      .idVendor = 0x0bda,
+      .bInterfaceClass = 0xe0,
+      .bInterfaceSubClass = 0x01,
+      .bInterfaceProtocol = 0x01 },
+
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
+                     USB_DEVICE_ID_MATCH_INT_INFO,
+      .idVendor = 0x13d3,
+      .bInterfaceClass = 0xe0,
+      .bInterfaceSubClass = 0x01,
+      .bInterfaceProtocol = 0x01 },
+
+    { }
+};
+
+MODULE_DEVICE_TABLE(usb, btusb_table);
+
+static int inc_tx(struct btusb_data *data)
+{
+    unsigned long flags;
+    int rv;
+
+    spin_lock_irqsave(&data->txlock, flags);
+    rv = test_bit(BTUSB_SUSPENDING, &data->flags);
+    if (!rv)
+        data->tx_in_flight++;
+    spin_unlock_irqrestore(&data->txlock, flags);
+
+    return rv;
+}
+
+void check_sco_event(struct urb *urb)
+{
+    u8* opcode = (u8*)(urb->transfer_buffer);
+    u8 status;
+    uint16_t handle;
+    struct hci_dev *hdev = urb->context;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+
+    switch (*opcode) {
+    case HCI_EV_SYNC_CONN_COMPLETE:
+        RTKBT_INFO("%s: HCI_EV_SYNC_CONN_COMPLETE(0x%02x)", __func__, *opcode);
+        status = *(opcode + 2);
+        data->sco_handle = *(opcode + 3) | *(opcode + 4) << 8;
+        //hdev->voice_setting = *(uint16_t*)&opcode[15];
+        if (status == 0) {
+            hdev->conn_hash.sco_num++;
+            hdev->notify(hdev, 0);
+        }
+        break;
+    case HCI_EV_DISCONN_COMPLETE:
+        status = *(opcode + 2);
+        handle = *(opcode + 3) | *(opcode + 4) << 8;
+        if (status == 0 && data->sco_handle == handle) {
+            RTKBT_INFO("%s: SCO HCI_EV_DISCONN_COMPLETE(0x%02x)", __func__, *opcode);
+            hdev->conn_hash.sco_num--;
+            hdev->notify(hdev, 0);
+            data->sco_handle = 0;
+        }
+        break;
+    default:
+        RTKBT_DBG("%s: event 0x%02x", __func__, *opcode);
+        break;
+    }
+}
+
+static void btusb_intr_complete(struct urb *urb)
+{
+    struct hci_dev *hdev = urb->context;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    int err;
+
+    RTKBT_DBG("%s: urb %p status %d count %d ", __func__,
+            urb, urb->status, urb->actual_length);
+
+#ifdef CONFIG_SCO_OVER_HCI
+    check_sco_event(urb);
+#endif
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags))
+        return;
+
+
+    if (urb->status == 0) {
+        hdev->stat.byte_rx += urb->actual_length;
+
+        if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
+                        urb->transfer_buffer,
+                        urb->actual_length) < 0) {
+            RTKBT_ERR("%s: Corrupted event packet", __func__);
+            hdev->stat.err_rx++;
+        }
+    }
+    /* Avoid suspend failed when usb_kill_urb */
+    else if(urb->status == -ENOENT)    {
+        return;
+    }
+
+
+    if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
+        return;
+
+    usb_mark_last_busy(data->udev);
+    usb_anchor_urb(urb, &data->intr_anchor);
+
+    err = usb_submit_urb(urb, GFP_ATOMIC);
+    if (err < 0) {
+        /* EPERM: urb is being killed;
+         * ENODEV: device got disconnected */
+        if (err != -EPERM && err != -ENODEV)
+            RTKBT_ERR("%s: Failed to re-submit urb %p, err %d",
+                    __func__, urb, err);
+        usb_unanchor_urb(urb);
+    }
+}
+
+static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    struct urb *urb;
+    unsigned char *buf;
+    unsigned int pipe;
+    int err, size;
+
+    if (!data->intr_ep)
+        return -ENODEV;
+
+    urb = usb_alloc_urb(0, mem_flags);
+    if (!urb)
+        return -ENOMEM;
+
+    size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
+
+    buf = kmalloc(size, mem_flags);
+    if (!buf) {
+        usb_free_urb(urb);
+        return -ENOMEM;
+    }
+
+    RTKBT_DBG("%s: mMaxPacketSize %d, bEndpointAddress 0x%02x",
+            __func__, size, data->intr_ep->bEndpointAddress);
+
+    pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
+
+    usb_fill_int_urb(urb, data->udev, pipe, buf, size,
+                        btusb_intr_complete, hdev,
+                        data->intr_ep->bInterval);
+
+    urb->transfer_flags |= URB_FREE_BUFFER;
+
+    usb_anchor_urb(urb, &data->intr_anchor);
+
+    err = usb_submit_urb(urb, mem_flags);
+    if (err < 0) {
+        RTKBT_ERR("%s: Failed to submit urb %p, err %d",
+                __func__, urb, err);
+        usb_unanchor_urb(urb);
+    }
+
+    usb_free_urb(urb);
+
+    return err;
+}
+
+static void btusb_bulk_complete(struct urb *urb)
+{
+    struct hci_dev *hdev = urb->context;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    int err;
+
+    RTKBT_DBG("%s: urb %p status %d count %d",
+            __func__, urb, urb->status, urb->actual_length);
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags))
+        return;
+
+    if (urb->status == 0) {
+        hdev->stat.byte_rx += urb->actual_length;
+
+        if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
+                        urb->transfer_buffer,
+                        urb->actual_length) < 0) {
+            RTKBT_ERR("%s: Corrupted ACL packet", __func__);
+            hdev->stat.err_rx++;
+        }
+    }
+    /* Avoid suspend failed when usb_kill_urb */
+    else if(urb->status == -ENOENT)    {
+        return;
+    }
+
+
+    if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
+        return;
+
+    usb_anchor_urb(urb, &data->bulk_anchor);
+    usb_mark_last_busy(data->udev);
+
+    err = usb_submit_urb(urb, GFP_ATOMIC);
+    if (err < 0) {
+        /* -EPERM: urb is being killed;
+         * -ENODEV: device got disconnected */
+        if (err != -EPERM && err != -ENODEV)
+            RTKBT_ERR("btusb_bulk_complete %s urb %p failed to resubmit (%d)",
+                        hdev->name, urb, -err);
+        usb_unanchor_urb(urb);
+    }
+}
+
+static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    struct urb *urb;
+    unsigned char *buf;
+    unsigned int pipe;
+    int err, size = HCI_MAX_FRAME_SIZE;
+
+    RTKBT_DBG("%s: hdev name %s", __func__, hdev->name);
+
+    if (!data->bulk_rx_ep)
+        return -ENODEV;
+
+    urb = usb_alloc_urb(0, mem_flags);
+    if (!urb)
+        return -ENOMEM;
+
+    buf = kmalloc(size, mem_flags);
+    if (!buf) {
+        usb_free_urb(urb);
+        return -ENOMEM;
+    }
+
+    pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
+
+    usb_fill_bulk_urb(urb, data->udev, pipe,
+                    buf, size, btusb_bulk_complete, hdev);
+
+    urb->transfer_flags |= URB_FREE_BUFFER;
+
+    usb_mark_last_busy(data->udev);
+    usb_anchor_urb(urb, &data->bulk_anchor);
+
+    err = usb_submit_urb(urb, mem_flags);
+    if (err < 0) {
+        RTKBT_ERR("%s: Failed to submit urb %p, err %d", __func__, urb, err);
+        usb_unanchor_urb(urb);
+    }
+
+    usb_free_urb(urb);
+
+    return err;
+}
+
+static void btusb_isoc_complete(struct urb *urb)
+{
+    struct hci_dev *hdev = urb->context;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    int i, err;
+
+
+    RTKBT_DBG("%s: urb %p status %d count %d",
+            __func__, urb, urb->status, urb->actual_length);
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags) || !test_bit(BTUSB_ISOC_RUNNING, &data->flags))
+        return;
+
+    if (urb->status == 0) {
+        for (i = 0; i < urb->number_of_packets; i++) {
+            unsigned int offset = urb->iso_frame_desc[i].offset;
+            unsigned int length = urb->iso_frame_desc[i].actual_length;
+
+            if (urb->iso_frame_desc[i].status)
+                continue;
+
+            hdev->stat.byte_rx += length;
+
+            if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
+                        urb->transfer_buffer + offset,
+                                length) < 0) {
+                RTKBT_ERR("%s: Corrupted SCO packet", __func__);
+                hdev->stat.err_rx++;
+            }
+        }
+    }
+    /* Avoid suspend failed when usb_kill_urb */
+    else if(urb->status == -ENOENT)    {
+        return;
+    }
+
+    usb_anchor_urb(urb, &data->isoc_anchor);
+    i = 0;
+retry:
+    err = usb_submit_urb(urb, GFP_ATOMIC);
+    if (err < 0) {
+        /* -EPERM: urb is being killed;
+         * -ENODEV: device got disconnected */
+        if (err != -EPERM && err != -ENODEV)
+            RTKBT_ERR("%s: Failed to re-sumbit urb %p, retry %d, err %d",
+                    __func__, urb, i, err);
+        if (i < 10) {
+            i++;
+            mdelay(1);
+            goto retry;
+        }
+
+        usb_unanchor_urb(urb);
+    }
+}
+
+static inline void fill_isoc_descriptor(struct urb *urb, int len, int mtu)
+{
+    int i, offset = 0;
+
+    RTKBT_DBG("%s: len %d mtu %d", __func__, len, mtu);
+
+    for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
+                    i++, offset += mtu, len -= mtu) {
+        urb->iso_frame_desc[i].offset = offset;
+        urb->iso_frame_desc[i].length = mtu;
+    }
+
+    if (len && i < BTUSB_MAX_ISOC_FRAMES) {
+        urb->iso_frame_desc[i].offset = offset;
+        urb->iso_frame_desc[i].length = len;
+        i++;
+    }
+
+    urb->number_of_packets = i;
+}
+
+static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    struct urb *urb;
+    unsigned char *buf;
+    unsigned int pipe;
+    int err, size;
+
+    if (!data->isoc_rx_ep)
+        return -ENODEV;
+
+    urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
+    if (!urb)
+        return -ENOMEM;
+
+    size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
+                        BTUSB_MAX_ISOC_FRAMES;
+
+    buf = kmalloc(size, mem_flags);
+    if (!buf) {
+        usb_free_urb(urb);
+        return -ENOMEM;
+    }
+
+    pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
+
+    urb->dev      = data->udev;
+    urb->pipe     = pipe;
+    urb->context  = hdev;
+    urb->complete = btusb_isoc_complete;
+    urb->interval = data->isoc_rx_ep->bInterval;
+
+    urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
+    urb->transfer_buffer = buf;
+    urb->transfer_buffer_length = size;
+
+    fill_isoc_descriptor(urb, size,
+            le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
+
+    usb_anchor_urb(urb, &data->isoc_anchor);
+
+    err = usb_submit_urb(urb, mem_flags);
+    if (err < 0) {
+        RTKBT_ERR("%s: Failed to submit urb %p, err %d", __func__, urb, err);
+        usb_unanchor_urb(urb);
+    }
+
+    usb_free_urb(urb);
+
+    return err;
+}
+
+static void btusb_tx_complete(struct urb *urb)
+{
+    struct sk_buff *skb = urb->context;
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags))
+        goto done;
+
+    if (!urb->status)
+        hdev->stat.byte_tx += urb->transfer_buffer_length;
+    else
+        hdev->stat.err_tx++;
+
+done:
+    spin_lock(&data->txlock);
+    data->tx_in_flight--;
+    spin_unlock(&data->txlock);
+
+    kfree(urb->setup_packet);
+
+    kfree_skb(skb);
+}
+
+static void btusb_isoc_tx_complete(struct urb *urb)
+{
+    struct sk_buff *skb = urb->context;
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+    RTKBT_DBG("%s: urb %p status %d count %d",
+            __func__, urb, urb->status, urb->actual_length);
+
+    if (skb && hdev) {
+        if (!test_bit(HCI_RUNNING, &hdev->flags))
+            goto done;
+
+        if (!urb->status)
+            hdev->stat.byte_tx += urb->transfer_buffer_length;
+        else
+            hdev->stat.err_tx++;
+    } else
+        RTKBT_ERR("%s: skb 0x%p hdev 0x%p", __func__, skb, hdev);
+
+done:
+    kfree(urb->setup_packet);
+
+    kfree_skb(skb);
+}
+
+static int btusb_open(struct hci_dev *hdev)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    int err = 0;
+
+    RTKBT_INFO("%s: Start, PM usage count %d", __func__,
+            atomic_read(&(data->intf->pm_usage_cnt)));
+
+    err = usb_autopm_get_interface(data->intf);
+    if (err < 0)
+        return err;
+
+    data->intf->needs_remote_wakeup = 1;
+
+    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);
+        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);
+    RTKBT_INFO("%s: End, PM usage count %d", __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);
+    RTKBT_ERR("%s: Failed, PM usage count %d", __func__,
+            atomic_read(&(data->intf->pm_usage_cnt)));
+    return err;
+}
+
+static void btusb_stop_traffic(struct btusb_data *data)
+{
+    mdelay(URB_CANCELING_DELAY_MS);
+    usb_kill_anchored_urbs(&data->intr_anchor);
+    usb_kill_anchored_urbs(&data->bulk_anchor);
+    usb_kill_anchored_urbs(&data->isoc_anchor);
+}
+
+static int btusb_close(struct hci_dev *hdev)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    int i, err;
+
+    RTKBT_INFO("%s: hci running %lu", __func__, hdev->flags & HCI_RUNNING);
+
+    if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
+        return 0;
+
+    for (i = 0; i < NUM_REASSEMBLY; i++) {
+        if (hdev->reassembly[i]) {
+            RTKBT_DBG("%s: free ressembly[%d]", __func__, i);
+            kfree_skb(hdev->reassembly[i]);
+            hdev->reassembly[i] = NULL;
+        }
+    }
+
+    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);
+    usb_scuttle_anchored_urbs(&data->deferred);
+    return 0;
+}
+
+static int btusb_flush(struct hci_dev *hdev)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+
+    RTKBT_DBG("%s", __func__);
+
+    mdelay(URB_CANCELING_DELAY_MS);
+    usb_kill_anchored_urbs(&data->tx_anchor);
+
+    return 0;
+}
+
+#ifdef CONFIG_SCO_OVER_HCI
+static void btusb_isoc_snd_tx_complete(struct urb *urb);
+
+static int snd_send_sco_frame(struct sk_buff *skb)
+{
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    //struct usb_ctrlrequest *dr;
+    struct urb *urb;
+    unsigned int pipe;
+    int err;
+
+    RTKBT_DBG("%s:pkt type %d, packet_len : %d",
+            __func__,bt_cb(skb)->pkt_type, skb->len);
+
+    if (!hdev && !test_bit(HCI_RUNNING, &hdev->flags))
+        return -EBUSY;
+
+    if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) {
+        kfree(skb);
+        return -ENODEV;
+    }
+
+    urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
+    if (!urb) {
+        RTKBT_ERR("%s: Failed to allocate mem for sco pkts", __func__);
+        kfree(skb);
+        return -ENOMEM;
+    }
+
+    pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
+
+    usb_fill_int_urb(urb, data->udev, pipe,
+            skb->data, skb->len, btusb_isoc_snd_tx_complete,
+            skb, data->isoc_tx_ep->bInterval);
+
+    urb->transfer_flags  = URB_ISO_ASAP;
+
+    fill_isoc_descriptor(urb, skb->len,
+            le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
+
+    hdev->stat.sco_tx++;
+
+    usb_anchor_urb(urb, &data->tx_anchor);
+
+    err = usb_submit_urb(urb, GFP_ATOMIC);
+    if (err < 0) {
+        RTKBT_ERR("%s: Failed to submit urb %p, pkt type %d, err %d",
+                __func__, urb, bt_cb(skb)->pkt_type, err);
+        kfree(urb->setup_packet);
+        usb_unanchor_urb(urb);
+    } else
+        usb_mark_last_busy(data->udev);
+    usb_free_urb(urb);
+
+    return err;
+
+}
+
+static bool snd_copy_send_sco_data( RTK_sco_card_t *pSCOSnd)
+{
+    struct snd_pcm_runtime *runtime = pSCOSnd->playback.substream->runtime;
+       unsigned int frame_bytes = 2, frames1;
+    const u8 *source;
+
+    snd_pcm_uframes_t period_size = runtime->period_size;
+    int i, count;
+    u8 buffer[period_size * 3];
+    int sco_packet_bytes = pSCOSnd->playback.sco_packet_bytes;
+    struct sk_buff *skb;
+
+    count = frames_to_bytes(runtime, period_size)/sco_packet_bytes;
+    skb = bt_skb_alloc(((sco_packet_bytes + HCI_SCO_HDR_SIZE) * count), GFP_ATOMIC);
+    skb->dev = (void *)hci_dev_get(0);
+    bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
+    skb_put(skb, ((sco_packet_bytes + HCI_SCO_HDR_SIZE) * count));
+    if(!skb)
+        return false;
+
+    RTKBT_DBG("%s, buffer_pos: %d", __FUNCTION__, pSCOSnd->playback.buffer_pos);
+
+    source = runtime->dma_area + pSCOSnd->playback.buffer_pos * frame_bytes;
+
+    if (pSCOSnd->playback.buffer_pos + period_size <= runtime->buffer_size) {
+      memcpy(buffer, source, period_size * frame_bytes);
+    } else {
+      /* wrap around at end of ring buffer */
+      frames1 = runtime->buffer_size - pSCOSnd->playback.buffer_pos;
+      memcpy(buffer, source, frames1 * frame_bytes);
+      memcpy(&buffer[frames1 * frame_bytes],
+             runtime->dma_area, (period_size - frames1) * frame_bytes);
+    }
+
+    pSCOSnd->playback.buffer_pos += period_size;
+    if ( pSCOSnd->playback.buffer_pos >= runtime->buffer_size)
+       pSCOSnd->playback.buffer_pos -= runtime->buffer_size;
+
+    for(i = 0; i < count; i++) {
+        *((__u16 *)(skb->data + i * (sco_packet_bytes + HCI_SCO_HDR_SIZE))) = pSCOSnd->usb_data->sco_handle;
+        *((__u8 *)(skb->data + i*(sco_packet_bytes + HCI_SCO_HDR_SIZE) + 2)) = sco_packet_bytes;
+        memcpy((skb->data + i * (sco_packet_bytes + HCI_SCO_HDR_SIZE) + HCI_SCO_HDR_SIZE),
+          &buffer[sco_packet_bytes * i], sco_packet_bytes);
+    }
+
+    if(test_bit(ALSA_PLAYBACK_RUNNING, &pSCOSnd->states)) {
+        snd_pcm_period_elapsed(pSCOSnd->playback.substream);
+    }
+    snd_send_sco_frame(skb);
+    return true;
+}
+
+static void btusb_isoc_snd_tx_complete(struct urb *urb)
+{
+    struct sk_buff *skb = urb->context;
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    RTK_sco_card_t  *pSCOSnd = data->pSCOSnd;
+
+    RTKBT_DBG("%s: status %d count %d",
+            __func__,urb->status, urb->actual_length);
+
+    if (skb && hdev) {
+        if (!test_bit(HCI_RUNNING, &hdev->flags))
+            goto done;
+
+        if (!urb->status)
+            hdev->stat.byte_tx += urb->transfer_buffer_length;
+        else
+            hdev->stat.err_tx++;
+    } else
+        RTKBT_ERR("%s: skb 0x%p hdev 0x%p", __func__, skb, hdev);
+
+done:
+    kfree(urb->setup_packet);
+    kfree_skb(skb);
+    if(test_bit(ALSA_PLAYBACK_RUNNING, &pSCOSnd->states)){
+        snd_copy_send_sco_data(pSCOSnd);
+        //schedule_work(&pSCOSnd->send_sco_work);
+    }
+}
+
+static void playback_work(struct work_struct *work)
+{
+    RTK_sco_card_t *pSCOSnd = container_of(work, RTK_sco_card_t, send_sco_work);
+
+    snd_copy_send_sco_data(pSCOSnd);
+}
+
+#endif
+
+static int btusb_send_frame(struct sk_buff *skb)
+{
+    struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+    struct usb_ctrlrequest *dr;
+    struct urb *urb;
+    unsigned int pipe;
+    int err;
+    int retries = 0;
+
+    RTKBT_DBG("%s: hdev %p, btusb data %p, pkt type %d",
+            __func__, hdev, data, bt_cb(skb)->pkt_type);
+
+    if (!test_bit(HCI_RUNNING, &hdev->flags))
+        return -EBUSY;
+
+
+
+    switch (bt_cb(skb)->pkt_type) {
+    case HCI_COMMAND_PKT:
+        print_command(skb);
+        urb = usb_alloc_urb(0, GFP_ATOMIC);
+        if (!urb)
+            return -ENOMEM;
+
+        dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
+        if (!dr) {
+            usb_free_urb(urb);
+            return -ENOMEM;
+        }
+
+        dr->bRequestType = data->cmdreq_type;
+        dr->bRequest     = 0;
+        dr->wIndex       = 0;
+        dr->wValue       = 0;
+        dr->wLength      = __cpu_to_le16(skb->len);
+
+        pipe = usb_sndctrlpipe(data->udev, 0x00);
+
+        usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
+                skb->data, skb->len, btusb_tx_complete, skb);
+
+        hdev->stat.cmd_tx++;
+        break;
+
+    case HCI_ACLDATA_PKT:
+        print_acl(skb, 1);
+        if (!data->bulk_tx_ep)
+            return -ENODEV;
+
+        urb = usb_alloc_urb(0, GFP_ATOMIC);
+        if (!urb)
+            return -ENOMEM;
+
+        pipe = usb_sndbulkpipe(data->udev,
+                    data->bulk_tx_ep->bEndpointAddress);
+
+        usb_fill_bulk_urb(urb, data->udev, pipe,
+                skb->data, skb->len, btusb_tx_complete, skb);
+
+        hdev->stat.acl_tx++;
+        break;
+
+    case HCI_SCODATA_PKT:
+        print_sco(skb, 1);
+        if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) {
+            kfree(skb);
+            return -ENODEV;
+        }
+
+        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
+        if (!urb) {
+            RTKBT_ERR("%s: Failed to allocate mem for sco pkts", __func__);
+            kfree(skb);
+            return -ENOMEM;
+        }
+
+        pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
+
+        usb_fill_int_urb(urb, data->udev, pipe,
+                skb->data, skb->len, btusb_isoc_tx_complete,
+                skb, data->isoc_tx_ep->bInterval);
+
+        urb->transfer_flags  = URB_ISO_ASAP;
+
+        fill_isoc_descriptor(urb, skb->len,
+                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
+
+        hdev->stat.sco_tx++;
+        goto skip_waking;
+
+    default:
+        return -EILSEQ;
+    }
+
+    err = inc_tx(data);
+    if (err) {
+        usb_anchor_urb(urb, &data->deferred);
+        schedule_work(&data->waker);
+        err = 0;
+        goto done;
+    }
+
+skip_waking:
+    usb_anchor_urb(urb, &data->tx_anchor);
+retry:
+    err = usb_submit_urb(urb, GFP_ATOMIC);
+    if (err < 0) {
+        RTKBT_ERR("%s: Failed to submit urb %p, pkt type %d, err %d, retries %d",
+                __func__, urb, bt_cb(skb)->pkt_type, err, retries);
+        if ((bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) && (retries < 10)) {
+            mdelay(1);
+
+            if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT)
+                print_error_command(skb);
+            retries++;
+            goto retry;
+        }
+        kfree(urb->setup_packet);
+        usb_unanchor_urb(urb);
+    } else
+        usb_mark_last_busy(data->udev);
+    usb_free_urb(urb);
+
+done:
+    return err;
+}
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3, 4, 0)
+static void btusb_destruct(struct hci_dev *hdev)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+
+    RTKBT_DBG("%s: name %s", __func__, hdev->name);
+
+    kfree(data);
+}
+#endif
+
+static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
+{
+    struct btusb_data *data = GET_DRV_DATA(hdev);
+
+    RTKBT_DBG("%s: name %s, evt %d", __func__, hdev->name, evt);
+
+    RTKBT_INFO("%s: hdev->conn_hash.sco_num= %d, data->sco_num = %d", __func__, hdev->conn_hash.sco_num,
+      data->sco_num);
+    if (hdev->conn_hash.sco_num != data->sco_num) {
+        data->sco_num = hdev->conn_hash.sco_num;
+        schedule_work(&data->work);
+    }
+}
+
+static inline int set_isoc_interface(struct hci_dev *hdev, int altsetting)
+{
+    struct btusb_data *data = GET_DRV_DATA(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) {
+        RTKBT_ERR("%s: Failed to set interface, altsetting %d, err %d",
+                __func__, altsetting, 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) {
+        RTKBT_ERR("%s: Invalid SCO descriptors", __func__);
+        return -ENODEV;
+    }
+
+    return 0;
+}
+
+static int check_controller_support_msbc( struct usb_device *udev)
+{
+    //fix this in the future,when new card support msbc decode and encode
+    RTKBT_INFO("%s:pid = 0x%02x, vid = 0x%02x",__func__,udev->descriptor.idProduct, udev->descriptor.idVendor);
+    switch (udev->descriptor.idProduct) {
+
+        default:
+          return 0;
+    }
+    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;
+    struct sk_buff *skb;
+
+    int err;
+    int new_alts;
+    if (data->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);
+                mdelay(URB_CANCELING_DELAY_MS);
+                usb_kill_anchored_urbs(&data->isoc_anchor);
+                return;
+            }
+
+            set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
+        }
+
+        RTKBT_INFO("%s voice settings = 0x%04x", __func__, hdev->voice_setting);
+        if (!(hdev->voice_setting & 0x0003)) {
+            if(data->sco_num == 1)
+                new_alts = 2;
+            else {
+              RTKBT_ERR("%s: we don't support mutiple sco link for cvsd", __func__);
+              return;
+            }
+        } else{
+            if(check_controller_support_msbc(data->udev)) {
+                if(data->sco_num == 1)
+                    new_alts = 4;
+                else {
+                    RTKBT_ERR("%s: we don't support mutiple sco link for msbc", __func__);
+                    return;
+                }
+            } else {
+                new_alts = 2;
+            }
+        }
+        if (data->isoc_altsetting != new_alts) {
+
+            clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+            mdelay(URB_CANCELING_DELAY_MS);
+            usb_kill_anchored_urbs(&data->isoc_anchor);
+
+            if(hdev->reassembly[HCI_SCODATA_PKT - 1]) {
+                skb = hdev->reassembly[HCI_SCODATA_PKT - 1];
+                hdev->reassembly[HCI_SCODATA_PKT - 1] = NULL;
+                kfree_skb(skb);
+            }
+            if (set_isoc_interface(hdev, new_alts) < 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);
+        }
+#ifdef CONFIG_SCO_OVER_HCI
+        if(test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+            set_bit(USB_CAPTURE_RUNNING, &data->pSCOSnd->states);
+            set_bit(USB_PLAYBACK_RUNNING, &data->pSCOSnd->states);
+        }
+#endif
+    } else {
+        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+#ifdef CONFIG_SCO_OVER_HCI
+        clear_bit(USB_CAPTURE_RUNNING, &data->pSCOSnd->states);
+        clear_bit(USB_PLAYBACK_RUNNING, &data->pSCOSnd->states);
+#endif
+        mdelay(URB_CANCELING_DELAY_MS);
+        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 void btusb_waker(struct work_struct *work)
+{
+    struct btusb_data *data = container_of(work, struct btusb_data, waker);
+    int err;
+
+    RTKBT_DBG("%s: PM usage count %d", __func__,
+            atomic_read(&data->intf->pm_usage_cnt));
+
+    err = usb_autopm_get_interface(data->intf);
+    if (err < 0)
+        return;
+
+    usb_autopm_put_interface(data->intf);
+}
+
+
+//#ifdef CONFIG_HAS_EARLYSUSPEND
+#if 0
+static void btusb_early_suspend(struct early_suspend *h)
+{
+    struct btusb_data *data;
+    firmware_info *fw_info;
+    patch_info *patch_entry;
+
+    RTKBT_INFO("%s", __func__);
+
+    data = container_of(h, struct btusb_data, early_suspend);
+    fw_info = data->fw_info;
+    patch_entry = fw_info->patch_entry;
+
+    patch_entry->fw_len = load_firmware(fw_info, &patch_entry->fw_cache);
+    if (patch_entry->fw_len <= 0) {
+        /* We may encount failure in loading firmware, just give a warning */
+        RTKBT_WARN("%s: Failed to load firmware", __func__);
+    }
+}
+
+static void btusb_late_resume(struct early_suspend *h)
+{
+    struct btusb_data *data;
+    firmware_info *fw_info;
+    patch_info *patch_entry;
+
+    RTKBT_INFO("%s", __func__);
+
+    data = container_of(h, struct btusb_data, early_suspend);
+    fw_info = data->fw_info;
+    patch_entry = fw_info->patch_entry;
+
+    /* Reclaim fw buffer when bt usb resumed */
+    if (patch_entry->fw_len > 0) {
+        kfree(patch_entry->fw_cache);
+        patch_entry->fw_cache = NULL;
+        patch_entry->fw_len = 0;
+    }
+}
+#else
+int bt_pm_notify(struct notifier_block *notifier, ulong pm_event, void *unused)
+{
+    struct btusb_data *data;
+    firmware_info *fw_info;
+    patch_info *patch_entry;
+    struct usb_device *udev;
+
+    RTKBT_INFO("%s: pm event %ld", __func__, pm_event);
+
+    data = container_of(notifier, struct btusb_data, pm_notifier);
+    fw_info = data->fw_info;
+    patch_entry = fw_info->patch_entry;
+    udev = fw_info->udev;
+
+    switch (pm_event) {
+    case PM_SUSPEND_PREPARE:
+    case PM_HIBERNATION_PREPARE:
+#if 0
+        patch_entry->fw_len = load_firmware(fw_info, &patch_entry->fw_cache);
+        if (patch_entry->fw_len <= 0) {
+        /* We may encount failure in loading firmware, just give a warning */
+            RTKBT_WARN("%s: Failed to load firmware", __func__);
+        }
+#endif
+        if (!device_may_wakeup(&udev->dev)) {
+#if (CONFIG_RESET_RESUME || CONFIG_BLUEDROID)
+            RTKBT_INFO("%s:remote wakeup not supported, reset resume supported", __func__);
+#else
+            fw_info->intf->needs_binding = 1;
+            RTKBT_INFO("%s:remote wakeup not supported, binding needed", __func__);
+#endif
+        }
+        break;
+
+    case PM_POST_SUSPEND:
+    case PM_POST_HIBERNATION:
+    case PM_POST_RESTORE:
+#if 0
+        /* Reclaim fw buffer when bt usb resumed */
+        if (patch_entry->fw_len > 0) {
+            kfree(patch_entry->fw_cache);
+            patch_entry->fw_cache = NULL;
+            patch_entry->fw_len = 0;
+        }
+#endif
+
+#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;
+}
+
+int bt_reboot_notify(struct notifier_block *notifier, ulong pm_event, void *unused)
+{
+    struct btusb_data *data;
+    firmware_info *fw_info;
+    patch_info *patch_entry;
+    struct usb_device *udev;
+
+    RTKBT_INFO("%s: pm event %ld", __func__, pm_event);
+
+    data = container_of(notifier, struct btusb_data, reboot_notifier);
+    fw_info = data->fw_info;
+    patch_entry = fw_info->patch_entry;
+    udev = fw_info->udev;
+
+    switch (pm_event) {
+    case SYS_DOWN:
+        RTKBT_DBG("%s:system down or restart", __func__);
+    break;
+
+    case SYS_HALT:
+    case SYS_POWER_OFF:
+#if SUSPNED_DW_FW
+        cancel_work_sync(&data->work);
+
+        btusb_stop_traffic(data);
+        mdelay(URB_CANCELING_DELAY_MS);
+        usb_kill_anchored_urbs(&data->tx_anchor);
+
+
+        if(fw_info_4_suspend) {
+            download_suspend_patch(fw_info_4_suspend,1);
+        }
+           else
+                   RTKBT_ERR("%s: Failed to download suspend fw", __func__);
+#endif
+
+#if SET_WAKEUP_DEVICE
+        set_wakeup_device_from_conf(fw_info_4_suspend);
+#endif
+        RTKBT_DBG("%s:system halt or power off", __func__);
+    break;
+
+    default:
+        break;
+    }
+
+    return NOTIFY_DONE;
+}
+
+#endif
+
+#ifdef CONFIG_SCO_OVER_HCI
+static const struct snd_pcm_hardware snd_card_sco_capture_default =
+{
+    .info               = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_NONINTERLEAVED |
+                            SNDRV_PCM_ACCESS_RW_INTERLEAVED | SNDRV_PCM_INFO_FIFO_IN_FRAMES),
+    .formats            = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
+    .rates              = (SNDRV_PCM_RATE_8000),
+    .rate_min           = 8000,
+    .rate_max           = 8000,
+    .channels_min       = 1,
+    .channels_max       = 1,
+    .buffer_bytes_max   = 8 * 768,
+    .period_bytes_min   = 48,
+    .period_bytes_max   = 768,
+    .periods_min        = 1,
+    .periods_max        = 8,
+    .fifo_size          = 8,
+
+};
+
+static int snd_sco_capture_pcm_open(struct snd_pcm_substream * substream)
+{
+    RTK_sco_card_t  *pSCOSnd = substream->private_data;
+
+    RTKBT_INFO("%s", __FUNCTION__);
+    pSCOSnd->capture.substream = substream;
+
+    memcpy(&substream->runtime->hw, &snd_card_sco_capture_default, sizeof(struct snd_pcm_hardware));
+
+    if(check_controller_support_msbc(pSCOSnd->dev)) {
+        substream->runtime->hw.rates |= SNDRV_PCM_RATE_16000;
+        substream->runtime->hw.rate_max = 16000;
+        substream->runtime->hw.period_bytes_min = 96;
+        substream->runtime->hw.period_bytes_max = 16 * 96;
+        substream->runtime->hw.buffer_bytes_max = 8 * 16 * 96;
+    }
+    set_bit(ALSA_CAPTURE_OPEN, &pSCOSnd->states);
+    return 0;
+}
+
+static int snd_sco_capture_pcm_close(struct snd_pcm_substream *substream)
+{
+       RTK_sco_card_t *pSCOSnd = substream->private_data;
+
+       clear_bit(ALSA_CAPTURE_OPEN, &pSCOSnd->states);
+       return 0;
+}
+
+static int snd_sco_capture_ioctl(struct snd_pcm_substream *substream,  unsigned int cmd, void *arg)
+{
+    RTKBT_DBG("%s, cmd = %d", __FUNCTION__, cmd);
+    switch (cmd)
+    {
+        default:
+            return snd_pcm_lib_ioctl(substream, cmd, arg);
+    }
+    return 0;
+}
+
+static int snd_sco_capture_pcm_hw_params(struct snd_pcm_substream * substream, struct snd_pcm_hw_params * hw_params)
+{
+
+    int err;
+    struct snd_pcm_runtime *runtime = substream->runtime;
+    err = snd_pcm_lib_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params));
+    RTKBT_INFO("%s,err : %d,  runtime state : %d", __FUNCTION__, err, runtime->status->state);
+    return err;
+}
+
+static int snd_sco_capture_pcm_hw_free(struct snd_pcm_substream * substream)
+{
+    RTKBT_DBG("%s", __FUNCTION__);
+    return snd_pcm_lib_free_vmalloc_buffer(substream);;
+}
+
+static int snd_sco_capture_pcm_prepare(struct snd_pcm_substream *substream)
+{
+    RTK_sco_card_t *pSCOSnd = substream->private_data;
+    struct snd_pcm_runtime *runtime = substream->runtime;
+
+    RTKBT_INFO("%s", __FUNCTION__);
+    if (test_bit(DISCONNECTED, &pSCOSnd->states))
+                   return -ENODEV;
+         if (!test_bit(USB_CAPTURE_RUNNING, &pSCOSnd->states))
+                   return -EIO;
+
+    if(runtime->rate == 8000) {
+        if(pSCOSnd->usb_data->isoc_altsetting != 2)
+            return -ENOEXEC;
+        pSCOSnd->capture.sco_packet_bytes = 48;
+    }
+    else if(runtime->rate == 16000 && check_controller_support_msbc(pSCOSnd->dev)) {
+        if(pSCOSnd->usb_data->isoc_altsetting != 4)
+            return -ENOEXEC;
+        pSCOSnd->capture.sco_packet_bytes = 96;
+    }
+    else if(pSCOSnd->usb_data->isoc_altsetting == 2) {
+        pSCOSnd->capture.sco_packet_bytes = 48;
+    }
+    else if(pSCOSnd->usb_data->isoc_altsetting == 1) {
+        pSCOSnd->capture.sco_packet_bytes = 24;
+    }
+    return 0;
+}
+
+static int snd_sco_capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+         RTK_sco_card_t *pSCOSnd = substream->private_data;
+    RTKBT_INFO("%s, cmd : %d", __FUNCTION__, cmd);
+
+         switch (cmd) {
+           case SNDRV_PCM_TRIGGER_START:
+                     if (!test_bit(USB_CAPTURE_RUNNING, &pSCOSnd->states))
+                             return -EIO;
+                     set_bit(ALSA_CAPTURE_RUNNING, &pSCOSnd->states);
+                     return 0;
+           case SNDRV_PCM_TRIGGER_STOP:
+                     clear_bit(ALSA_CAPTURE_RUNNING, &pSCOSnd->states);
+                     return 0;
+           default:
+                     return -EINVAL;
+         }
+}
+
+static snd_pcm_uframes_t snd_sco_capture_pcm_pointer(struct snd_pcm_substream *substream)
+{
+         RTK_sco_card_t *pSCOSnd = substream->private_data;
+
+         return pSCOSnd->capture.buffer_pos;
+}
+
+
+static struct snd_pcm_ops snd_sco_capture_pcm_ops = {
+       .open =         snd_sco_capture_pcm_open,
+       .close =        snd_sco_capture_pcm_close,
+       .ioctl =        snd_sco_capture_ioctl,
+       .hw_params =    snd_sco_capture_pcm_hw_params,
+       .hw_free =      snd_sco_capture_pcm_hw_free,
+       .prepare =      snd_sco_capture_pcm_prepare,
+       .trigger =      snd_sco_capture_pcm_trigger,
+       .pointer =      snd_sco_capture_pcm_pointer,
+};
+
+
+static const struct snd_pcm_hardware snd_card_sco_playback_default =
+{
+    .info               = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_NONINTERLEAVED |
+                            SNDRV_PCM_ACCESS_RW_INTERLEAVED | SNDRV_PCM_INFO_FIFO_IN_FRAMES),
+    .formats            = SNDRV_PCM_FMTBIT_S16_LE,
+    .rates              = (SNDRV_PCM_RATE_8000),
+    .rate_min           = 8000,
+    .rate_max           = 8000,
+    .channels_min       = 1,
+    .channels_max       = 1,
+    .buffer_bytes_max   = 8 * 768,
+    .period_bytes_min   = 48,
+    .period_bytes_max   = 768,
+    .periods_min        = 1,
+    .periods_max        = 8,
+    .fifo_size          = 8,
+};
+
+static int snd_sco_playback_pcm_open(struct snd_pcm_substream * substream)
+{
+    RTK_sco_card_t *pSCOSnd = substream->private_data;
+    int err = 0;
+
+    RTKBT_INFO("%s, rate : %d", __FUNCTION__, substream->runtime->rate);
+    memcpy(&substream->runtime->hw, &snd_card_sco_playback_default, sizeof(struct snd_pcm_hardware));
+    if(check_controller_support_msbc(pSCOSnd->dev)) {
+        substream->runtime->hw.rates |= SNDRV_PCM_RATE_16000;
+        substream->runtime->hw.rate_max = 16000;
+        substream->runtime->hw.period_bytes_min = 96;
+        substream->runtime->hw.period_bytes_max = 16 * 96;
+        substream->runtime->hw.buffer_bytes_max = 8 * 16 * 96;
+    }
+    pSCOSnd->playback.substream = substream;
+    set_bit(ALSA_PLAYBACK_OPEN, &pSCOSnd->states);
+
+    return err;
+}
+
+static int snd_sco_playback_pcm_close(struct snd_pcm_substream *substream)
+{
+    RTK_sco_card_t *pSCOSnd = substream->private_data;
+
+         clear_bit(ALSA_PLAYBACK_OPEN, &pSCOSnd->states);
+    cancel_work_sync(&pSCOSnd->send_sco_work);
+         return 0;
+}
+
+static int snd_sco_playback_ioctl(struct snd_pcm_substream *substream,  unsigned int cmd, void *arg)
+{
+    RTKBT_DBG("%s, cmd : %d", __FUNCTION__, cmd);
+    switch (cmd)
+    {
+        default:
+            return snd_pcm_lib_ioctl(substream, cmd, arg);
+            break;
+    }
+    return 0;
+}
+
+static int snd_sco_playback_pcm_hw_params(struct snd_pcm_substream * substream, struct snd_pcm_hw_params * hw_params)
+{
+    int err;
+    err = snd_pcm_lib_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params));
+    return err;
+}
+
+static int snd_sco_palyback_pcm_hw_free(struct snd_pcm_substream * substream)
+{
+    RTKBT_DBG("%s", __FUNCTION__);
+    return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int snd_sco_playback_pcm_prepare(struct snd_pcm_substream *substream)
+{
+         RTK_sco_card_t *pSCOSnd = substream->private_data;
+    struct snd_pcm_runtime *runtime = substream->runtime;
+
+    RTKBT_INFO("%s, bound_rate = %d", __FUNCTION__, runtime->rate);
+
+         if (test_bit(DISCONNECTED, &pSCOSnd->states))
+                   return -ENODEV;
+         if (!test_bit(USB_PLAYBACK_RUNNING, &pSCOSnd->states))
+                   return -EIO;
+
+    if(runtime->rate == 8000) {
+        if(pSCOSnd->usb_data->isoc_altsetting != 2)
+            return -ENOEXEC;
+        pSCOSnd->playback.sco_packet_bytes = 48;
+    }
+    else if(runtime->rate == 16000) {
+        if(pSCOSnd->usb_data->isoc_altsetting != 4)
+            return -ENOEXEC;
+        pSCOSnd->playback.sco_packet_bytes = 96;
+    }
+
+       return 0;
+}
+
+static int snd_sco_playback_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+       RTK_sco_card_t *pSCOSnd = substream->private_data;
+
+    RTKBT_INFO("%s, cmd = %d", __FUNCTION__, cmd);
+       switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+               if (!test_bit(USB_PLAYBACK_RUNNING, &pSCOSnd->states))
+                       return -EIO;
+               set_bit(ALSA_PLAYBACK_RUNNING, &pSCOSnd->states);
+          schedule_work(&pSCOSnd->send_sco_work);
+               return 0;
+       case SNDRV_PCM_TRIGGER_STOP:
+               clear_bit(ALSA_PLAYBACK_RUNNING, &pSCOSnd->states);
+               return 0;
+       default:
+               return -EINVAL;
+       }
+}
+
+static snd_pcm_uframes_t snd_sco_playback_pcm_pointer(struct snd_pcm_substream *substream)
+{
+       RTK_sco_card_t *pSCOSnd = substream->private_data;
+
+       return pSCOSnd->playback.buffer_pos;
+}
+
+
+static struct snd_pcm_ops snd_sco_playback_pcm_ops = {
+       .open =         snd_sco_playback_pcm_open,
+       .close =        snd_sco_playback_pcm_close,
+       .ioctl =        snd_sco_playback_ioctl,
+       .hw_params =    snd_sco_playback_pcm_hw_params,
+       .hw_free =      snd_sco_palyback_pcm_hw_free,
+       .prepare =      snd_sco_playback_pcm_prepare,
+       .trigger =      snd_sco_playback_pcm_trigger,
+       .pointer =      snd_sco_playback_pcm_pointer,
+};
+
+
+static RTK_sco_card_t* btusb_snd_init(struct usb_interface *intf, const struct usb_device_id *id, struct btusb_data *data)
+{
+    struct snd_card *card;
+    RTK_sco_card_t  *pSCOSnd;
+    int err=0;
+    RTKBT_INFO("%s", __func__);
+    err = snd_card_new(&intf->dev,
+     -1, RTK_SCO_ID, THIS_MODULE,
+     sizeof(RTK_sco_card_t), &card);
+    if (err < 0) {
+        RTKBT_ERR("%s: sco snd card create fail", __func__);
+        return NULL;
+    }
+    // private data
+    pSCOSnd = (RTK_sco_card_t *)card->private_data;
+    pSCOSnd->card = card;
+    pSCOSnd->dev = interface_to_usbdev(intf);
+    pSCOSnd->usb_data = data;
+
+    strcpy(card->driver, RTK_SCO_ID);
+    strcpy(card->shortname, "Realtek sco snd");
+    sprintf(card->longname, "Realtek sco over hci: VID:0x%04x, PID:0x%04x",
+        id->idVendor, pSCOSnd->dev->descriptor.idProduct);
+
+    err = snd_pcm_new(card, RTK_SCO_ID, 0, 1, 1, &pSCOSnd->pcm);
+    if (err < 0) {
+        RTKBT_ERR("%s: sco snd card new pcm fail", __func__);
+        return NULL;
+    }
+    pSCOSnd->pcm->private_data = pSCOSnd;
+    sprintf(pSCOSnd->pcm->name, "sco_pcm:VID:0x%04x, PID:0x%04x",
+      id->idVendor, pSCOSnd->dev->descriptor.idProduct);
+
+    snd_pcm_set_ops(pSCOSnd->pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sco_playback_pcm_ops);
+    snd_pcm_set_ops(pSCOSnd->pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sco_capture_pcm_ops);
+
+    err = snd_card_register(card);
+    if (err < 0) {
+        RTKBT_ERR("%s: sco snd card register card fail", __func__);
+        return NULL;
+    }
+
+    spin_lock_init(&pSCOSnd->capture_lock);
+    spin_lock_init(&pSCOSnd->playback_lock);
+    INIT_WORK(&pSCOSnd->send_sco_work, playback_work);
+    return pSCOSnd;
+}
+#endif
+
+static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+    struct usb_device *udev = interface_to_usbdev(intf);
+    struct usb_endpoint_descriptor *ep_desc;
+    struct btusb_data *data;
+    struct hci_dev *hdev;
+    firmware_info *fw_info;
+    int i, err=0;
+
+    RTKBT_INFO("%s: usb_interface %p, bInterfaceNumber %d, idVendor 0x%04x, "
+            "idProduct 0x%04x", __func__, intf,
+            intf->cur_altsetting->desc.bInterfaceNumber,
+            id->idVendor, id->idProduct);
+
+    /* interface numbers are hardcoded in the spec */
+    if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+        return -ENODEV;
+
+    RTKBT_DBG("%s: can wakeup = %x, may wakeup = %x", __func__,
+            device_can_wakeup(&udev->dev), device_may_wakeup(&udev->dev));
+
+    data = rtk_alloc(intf);
+    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) {
+        rtk_free(data);
+        return -ENODEV;
+    }
+
+    data->cmdreq_type = USB_TYPE_CLASS;
+
+    data->udev = udev;
+    data->intf = intf;
+
+    dlfw_dis_state = 0;
+    spin_lock_init(&queue_lock);
+    spin_lock_init(&dlfw_lock);
+    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);
+
+    fw_info = firmware_info_init(intf);
+    if (fw_info)
+        data->fw_info = fw_info;
+    else {
+        RTKBT_WARN("%s: Failed to initialize fw info", __func__);
+        /* Skip download patch */
+        goto end;
+    }
+
+    hdev = hci_alloc_dev();
+    if (!hdev) {
+        rtk_free(data);
+        data = NULL;
+        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;
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 4, 0)
+    hci_set_drvdata(hdev, data);
+#else
+    hdev->driver_data = data;
+    hdev->destruct = btusb_destruct;
+    hdev->owner = THIS_MODULE;
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 1)
+    if (!reset_on_close){
+        /* set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); */
+        RTKBT_DBG("%s: Set HCI_QUIRK_RESET_ON_CLOSE", __func__);
+    }
+#endif
+
+    /* 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);
+            hdev = NULL;
+            rtk_free(data);
+            data = NULL;
+            return err;
+        }
+#ifdef CONFIG_SCO_OVER_HCI
+        data->pSCOSnd = btusb_snd_init(intf, id, data);
+#endif
+    }
+
+    err = hci_register_dev(hdev);
+    if (err < 0) {
+        hci_free_dev(hdev);
+        hdev = NULL;
+        rtk_free(data);
+        data = NULL;
+        return err;
+    }
+
+    usb_set_intfdata(intf, data);
+
+//#ifdef CONFIG_HAS_EARLYSUSPEND
+#if 0
+    data->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN;
+    data->early_suspend.suspend = btusb_early_suspend;
+    data->early_suspend.resume = btusb_late_resume;
+    register_early_suspend(&data->early_suspend);
+#else
+    data->pm_notifier.notifier_call = bt_pm_notify;
+    data->reboot_notifier.notifier_call = bt_reboot_notify;
+    register_pm_notifier(&data->pm_notifier);
+    register_reboot_notifier(&data->reboot_notifier);
+#endif
+
+#if CONFIG_BLUEDROID
+    RTKBT_INFO("%s: Check bt reset flag %d", __func__, bt_reset);
+    /* Report hci hardware error after everthing is ready,
+     * especially hci register is completed. Or, btchr_poll
+     * will get null hci dev when hotplug in.
+     */
+    if (bt_reset == 1) {
+        hci_hardware_error();
+        bt_reset = 0;
+    } else
+        bt_reset = 0; /* Clear and reset it anyway */
+#endif
+
+end:
+    return 0;
+}
+
+static void btusb_disconnect(struct usb_interface *intf)
+{
+    struct btusb_data *data;
+    struct hci_dev *hdev = NULL;
+
+    if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+        return;
+
+    wait_event_interruptible(bt_dlfw_wait, (check_set_dlfw_state_value(2) == 2));
+
+    RTKBT_INFO("%s: usb_interface %p, bInterfaceNumber %d",
+            __func__, intf, intf->cur_altsetting->desc.bInterfaceNumber);
+
+    data = usb_get_intfdata(intf);
+
+    if (data)
+        hdev = data->hdev;
+    else {
+        RTKBT_WARN("%s: Failed to get bt usb data[Null]", __func__);
+        return;
+    }
+
+#ifdef CONFIG_SCO_OVER_HCI
+    if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
+        RTK_sco_card_t *pSCOSnd = data->pSCOSnd;
+        if(!pSCOSnd) {
+            RTKBT_ERR("%s: sco private data is null", __func__);
+            return;
+        }
+        set_bit(DISCONNECTED, &pSCOSnd->states);
+        snd_card_disconnect(pSCOSnd->card);
+        snd_card_free_when_closed(pSCOSnd->card);
+    }
+#endif
+
+//#ifdef CONFIG_HAS_EARLYSUSPEND
+#if 0
+    unregister_early_suspend(&data->early_suspend);
+#else
+    unregister_pm_notifier(&data->pm_notifier);
+    unregister_reboot_notifier(&data->reboot_notifier);
+#endif
+
+    firmware_info_destroy(intf);
+
+#if CONFIG_BLUEDROID
+    if (test_bit(HCI_RUNNING, &hdev->flags)) {
+        RTKBT_INFO("%s: Set BT reset flag", __func__);
+        bt_reset = 1;
+    }
+#endif
+
+    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);
+
+#if !CONFIG_BLUEDROID
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3, 4, 0)
+    __hci_dev_put(hdev);
+#endif
+#endif
+
+    hci_free_dev(hdev);
+    rtk_free(data);
+    data = NULL;
+    set_dlfw_state_value(0);
+}
+
+#ifdef CONFIG_PM
+static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+    struct btusb_data *data = usb_get_intfdata(intf);
+    firmware_info *fw_info = data->fw_info;
+
+    RTKBT_INFO("%s: event 0x%x, suspend count %d", __func__,
+            message.event, data->suspend_count);
+
+    if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+        return 0;
+
+    if (!test_bit(HCI_RUNNING, &data->hdev->flags))
+        set_bt_onoff(fw_info, 1);
+
+    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--;
+        RTKBT_ERR("%s: Failed to enter suspend", __func__);
+        return -EBUSY;
+    }
+
+    cancel_work_sync(&data->work);
+
+    btusb_stop_traffic(data);
+    mdelay(URB_CANCELING_DELAY_MS);
+    usb_kill_anchored_urbs(&data->tx_anchor);
+
+#if SUSPNED_DW_FW
+    if(fw_info_4_suspend) {
+        download_suspend_patch(fw_info_4_suspend,1);
+    }
+    else
+        RTKBT_ERR("%s: Failed to download suspend fw", __func__);
+#endif
+
+#if SET_WAKEUP_DEVICE
+    set_wakeup_device_from_conf(fw_info_4_suspend);
+#endif
+
+    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) {
+            RTKBT_ERR("%s: Failed to submit urb %p, err %d",
+                    __func__, urb, err);
+            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);
+    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;
+    firmware_info *fw_info = data->fw_info;
+    int err = 0;
+
+    RTKBT_INFO("%s: Suspend count %d", __func__, data->suspend_count);
+
+    if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+        return 0;
+
+    if (--data->suspend_count)
+        return 0;
+
+    /*check_fw_version to check the status of the BT Controller after USB Resume*/
+    err = check_fw_version(fw_info, true);
+    if (err !=0)
+    {
+        RTKBT_INFO("%s: BT Controller Power OFF And Return hci_hardware_error:%d", __func__, err);
+        hci_hardware_error();
+    }
+
+
+    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);
+    usb_scuttle_anchored_urbs(&data->deferred);
+    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
+#if CONFIG_RESET_RESUME
+    .reset_resume    = btusb_resume,
+#endif
+    .id_table    = btusb_table,
+    .supports_autosuspend = 1,
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 7, 1)
+    .disable_hub_initiated_lpm = 1,
+#endif
+};
+
+static int __init btusb_init(void)
+{
+    int err;
+
+    RTKBT_INFO("RTKBT_RELEASE_NAME: %s",RTKBT_RELEASE_NAME);
+    RTKBT_INFO("Realtek Bluetooth USB driver module init, version %s", VERSION);
+#if CONFIG_BLUEDROID
+    err = btchr_init();
+    if (err < 0) {
+        /* usb register will go on, even bt char register failed */
+        RTKBT_ERR("Failed to register usb char device interfaces");
+    } else
+        bt_char_dev_registered = true;
+#endif
+    err = usb_register(&btusb_driver);
+    if (err < 0)
+        RTKBT_ERR("Failed to register RTK bluetooth USB driver");
+    return err;
+}
+
+static void __exit btusb_exit(void)
+{
+    struct hci_dev *hdev;
+    RTKBT_INFO("Realtek Bluetooth USB driver module exit");
+#if CONFIG_BLUEDROID
+    hdev = hci_dev_get(0);
+    if (bt_char_dev_registered) {
+        bt_char_dev_registered = false;
+        while(hdev && atomic_read(&hdev->promisc)) {
+            RTKBT_ERR("%s: rtkbt driver is being removed, but application is still running!", __func__);
+            RTKBT_ERR("%s: wait bt application to stop, or the driver can't be removed", __func__);
+            mdelay(100);
+        }
+        btchr_exit();
+    }
+#endif
+    usb_deregister(&btusb_driver);
+}
+
+module_init(btusb_init);
+module_exit(btusb_exit);
+
+
+module_param(mp_drv_mode, int, 0644);
+MODULE_PARM_DESC(mp_drv_mode, "0: NORMAL; 1: MP MODE");
+
+
+MODULE_AUTHOR("Realtek Corporation");
+MODULE_DESCRIPTION("Realtek Bluetooth USB driver version");
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");

diff --git a/rtk_btusb.h b/rtk_btusb.h
new file mode 100644 (file)
index 0000000..cebbd14
--- /dev/null
+++ b/rtk_btusb.h
@@ -0,0 +1,768 @@
+/*
+ *
+ *  Realtek Bluetooth USB driver
+ *
+ *
+ *  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 <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/usb.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/poll.h>
+
+#include <linux/version.h>
+#include <linux/pm_runtime.h>
+#include <linux/firmware.h>
+#include <linux/suspend.h>
+
+#define CONFIG_BLUEDROID        1 /* bleuz 0, bluedroid 1 */
+//#define CONFIG_SCO_OVER_HCI
+
+#ifdef CONFIG_SCO_OVER_HCI
+#include <linux/usb/audio.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#define RTK_SCO_ID "snd_sco_rtk"
+enum {
+       USB_CAPTURE_RUNNING,
+       USB_PLAYBACK_RUNNING,
+       ALSA_CAPTURE_OPEN,
+       ALSA_PLAYBACK_OPEN,
+       ALSA_CAPTURE_RUNNING,
+       ALSA_PLAYBACK_RUNNING,
+       CAPTURE_URB_COMPLETED,
+       PLAYBACK_URB_COMPLETED,
+       DISCONNECTED,
+};
+
+// RTK sound card
+typedef struct RTK_sco_card {
+    struct snd_card *card;
+    struct snd_pcm *pcm;
+    struct usb_device *dev;
+    struct btusb_data *usb_data;
+    unsigned long states;
+    struct rtk_sco_stream {
+                   struct snd_pcm_substream *substream;
+                   unsigned int sco_packet_bytes;
+                   snd_pcm_uframes_t buffer_pos;
+         } capture, playback;
+    spinlock_t capture_lock;
+    spinlock_t playback_lock;
+    struct work_struct send_sco_work;
+} RTK_sco_card_t;
+#endif
+/* Some Android system may use standard Linux kernel, while
+ * standard Linux may also implement early suspend feature.
+ * So exclude earysuspend.h from CONFIG_BLUEDROID.
+ */
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+
+#if CONFIG_BLUEDROID
+#else
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/hci.h>
+#endif
+
+
+/***********************************
+** Realtek - For rtk_btusb driver **
+***********************************/
+#define URB_CANCELING_DELAY_MS          10
+/* when OS suspended, module is still powered,usb is not powered,
+ * this may set to 1, and must comply with special patch code.
+ */
+#define CONFIG_RESET_RESUME     1
+#define PRINT_CMD_EVENT         0
+#define PRINT_ACL_DATA          0
+#define PRINT_SCO_DATA          0
+
+#define RTKBT_DBG_FLAG          0
+
+#if RTKBT_DBG_FLAG
+#define RTKBT_DBG(fmt, arg...) printk(KERN_INFO "rtk_btusb: " fmt "\n" , ## arg)
+#else
+#define RTKBT_DBG(fmt, arg...)
+#endif
+#define RTKBT_INFO(fmt, arg...) printk(KERN_INFO "rtk_btusb: " fmt "\n" , ## arg)
+#define RTKBT_WARN(fmt, arg...) printk(KERN_WARNING "rtk_btusb: " fmt "\n" , ## arg)
+#define RTKBT_ERR(fmt, arg...) printk(KERN_ERR "rtk_btusb: " fmt "\n" , ## arg)
+
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 33)
+#define HDEV_BUS        hdev->bus
+#define USB_RPM            1
+#else
+#define HDEV_BUS        hdev->type
+#define USB_RPM            0
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
+#define NUM_REASSEMBLY 3
+#endif
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 4, 0)
+#define GET_DRV_DATA(x)        hci_get_drvdata(x)
+#else
+#define GET_DRV_DATA(x)        x->driver_data
+#endif
+
+#define BTUSB_RPM        (0 * USB_RPM) /* 1 SS enable; 0 SS disable */
+#define BTUSB_WAKEUP_HOST        0    /* 1  enable; 0  disable */
+#define BTUSB_MAX_ISOC_FRAMES    48
+#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 HCI_CMD_READ_BD_ADDR 0x1009
+#define HCI_VENDOR_CHANGE_BDRATE 0xfc17
+#define HCI_VENDOR_READ_RTK_ROM_VERISION 0xfc6d
+#define HCI_VENDOR_READ_LMP_VERISION 0x1001
+#define HCI_VENDOR_FORCE_RESET_AND_PATCHABLE 0xfc66
+#define HCI_VENDOR_RESET                       0x0C03
+#define HCI_VENDOR_ADD_WAKE_UP_DEVICE       0xfc7b
+#define HCI_VENDOR_REMOVE_WAKE_UP_DEVICE    0xfc7c
+#define HCI_VENDOR_CLEAR_POWERON_LIST       0xfc7d
+
+#define HCI_VENDOR_USB_DISC_HARDWARE_ERROR   0xFF
+
+#define SET_WAKEUP_DEVICE_CONF      "/data/misc/bluedroid/rtkbt_wakeup_ble.conf"
+
+#define DRV_NORMAL_MODE 0
+#define DRV_MP_MODE 1
+int mp_drv_mode = 0; /* 1 Mptool Fw; 0 Normal Fw */
+
+#define ROM_LMP_NONE                0x0000
+#define ROM_LMP_8723a               0x1200
+#define ROM_LMP_8723b               0x8723
+#define ROM_LMP_8821a               0X8821
+#define ROM_LMP_8761a               0X8761
+#define ROM_LMP_8761b               0X8761
+#define ROM_LMP_8703a               0x8723
+#define ROM_LMP_8763a               0x8763
+#define ROM_LMP_8703b               0x8703
+#define ROM_LMP_8723c               0x8703
+#define ROM_LMP_8822b               0x8822
+#define ROM_LMP_8723d               0x8723
+#define ROM_LMP_8821c               0x8821
+#define ROM_LMP_8822c               0x8822
+
+/* signature: Realtek */
+const uint8_t RTK_EPATCH_SIGNATURE[8] = {0x52,0x65,0x61,0x6C,0x74,0x65,0x63,0x68};
+/* Extension Section IGNATURE:0x77FD0451 */
+const uint8_t EXTENSION_SECTION_SIGNATURE[4] = {0x51,0x04,0xFD,0x77};
+
+uint16_t project_id[] = {
+    ROM_LMP_8723a,
+    ROM_LMP_8723b,
+    ROM_LMP_8821a,
+    ROM_LMP_8761a,
+    ROM_LMP_8703a,
+    ROM_LMP_8763a,
+    ROM_LMP_8703b,
+    ROM_LMP_8723c,
+    ROM_LMP_8822b,
+    ROM_LMP_8723d,
+    ROM_LMP_8821c,
+    ROM_LMP_NONE,
+    ROM_LMP_NONE,
+    ROM_LMP_8822c,  //0x0d
+    ROM_LMP_8761b,
+    ROM_LMP_NONE
+};
+struct rtk_eversion_evt {
+    uint8_t status;
+    uint8_t version;
+} __attribute__ ((packed));
+
+/*modified by lamparten 1020*/
+struct rtk_reset_evt {
+    uint8_t status;
+} __attribute__ ((packed));
+/*modified by lamparten 1020*/
+
+struct rtk_localversion_evt {
+    uint8_t status;
+    uint8_t hci_version;
+    uint16_t hci_revision;
+    uint8_t lmp_version;
+    uint16_t lmp_manufacture;
+    uint16_t lmp_subversion;
+} __attribute__ ((packed));
+
+struct rtk_epatch_entry {
+    uint16_t chip_id;
+    uint16_t patch_length;
+    uint32_t start_offset;
+    uint32_t coex_version;
+    uint32_t svn_version;
+    uint32_t fw_version;
+} __attribute__ ((packed));
+
+struct rtk_epatch {
+    uint8_t signature[8];
+    uint32_t fw_version;
+    uint16_t number_of_total_patch;
+    struct rtk_epatch_entry entry[0];
+} __attribute__ ((packed));
+
+struct rtk_extension_entry {
+    uint8_t opcode;
+    uint8_t length;
+    uint8_t *data;
+} __attribute__ ((packed));
+
+struct rtk_bt_vendor_config_entry{
+    uint16_t offset;
+    uint8_t entry_len;
+    uint8_t entry_data[0];
+} __attribute__ ((packed));
+
+struct rtk_bt_vendor_config{
+    uint32_t signature;
+    uint16_t data_len;
+    struct rtk_bt_vendor_config_entry entry[0];
+} __attribute__ ((packed));
+
+/* Realtek - For rtk_btusb driver end */
+
+#if CONFIG_BLUEDROID
+#define QUEUE_SIZE 500
+
+/***************************************
+** Realtek - Integrate from bluetooth.h **
+*****************************************/
+/* Reserv for core and drivers use */
+#define BT_SKB_RESERVE    8
+
+/* BD Address */
+typedef struct {
+    __u8 b[6];
+} __packed bdaddr_t;
+
+/* Skb helpers */
+struct bt_skb_cb {
+    __u8 pkt_type;
+    __u8 incoming;
+    __u16 expect;
+    __u16 tx_seq;
+    __u8 retries;
+    __u8 sar;
+    __u8 force_active;
+};
+
+#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
+
+static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
+{
+    struct sk_buff *skb;
+
+    if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) {
+        skb_reserve(skb, BT_SKB_RESERVE);
+        bt_cb(skb)->incoming  = 0;
+    }
+    return skb;
+}
+/* Realtek - Integrate from bluetooth.h end */
+
+/***********************************
+** Realtek - Integrate from hci.h **
+***********************************/
+#define HCI_MAX_ACL_SIZE    1024
+#define HCI_MAX_SCO_SIZE    255
+#define HCI_MAX_EVENT_SIZE    260
+#define HCI_MAX_FRAME_SIZE    (HCI_MAX_ACL_SIZE + 4)
+
+/* HCI bus types */
+#define HCI_VIRTUAL    0
+#define HCI_USB        1
+#define HCI_PCCARD    2
+#define HCI_UART    3
+#define HCI_RS232    4
+#define HCI_PCI        5
+#define HCI_SDIO    6
+
+/* HCI controller types */
+#define HCI_BREDR    0x00
+#define HCI_AMP        0x01
+
+/* HCI device flags */
+enum {
+    HCI_UP,
+    HCI_INIT,
+    HCI_RUNNING,
+
+    HCI_PSCAN,
+    HCI_ISCAN,
+    HCI_AUTH,
+    HCI_ENCRYPT,
+    HCI_INQUIRY,
+
+    HCI_RAW,
+
+    HCI_RESET,
+};
+
+/*
+ * BR/EDR and/or LE controller flags: the flags defined here should represent
+ * states from the controller.
+ */
+enum {
+    HCI_SETUP,
+    HCI_AUTO_OFF,
+    HCI_MGMT,
+    HCI_PAIRABLE,
+    HCI_SERVICE_CACHE,
+    HCI_LINK_KEYS,
+    HCI_DEBUG_KEYS,
+    HCI_UNREGISTER,
+
+    HCI_LE_SCAN,
+    HCI_SSP_ENABLED,
+    HCI_HS_ENABLED,
+    HCI_LE_ENABLED,
+    HCI_CONNECTABLE,
+    HCI_DISCOVERABLE,
+    HCI_LINK_SECURITY,
+    HCI_PENDING_CLASS,
+};
+
+/* HCI data types */
+#define HCI_COMMAND_PKT        0x01
+#define HCI_ACLDATA_PKT        0x02
+#define HCI_SCODATA_PKT        0x03
+#define HCI_EVENT_PKT        0x04
+#define HCI_VENDOR_PKT        0xff
+
+#define HCI_MAX_NAME_LENGTH        248
+#define HCI_MAX_EIR_LENGTH        240
+
+#define HCI_OP_READ_LOCAL_VERSION    0x1001
+struct hci_rp_read_local_version {
+    __u8     status;
+    __u8     hci_ver;
+    __le16   hci_rev;
+    __u8     lmp_ver;
+    __le16   manufacturer;
+    __le16   lmp_subver;
+} __packed;
+
+#define HCI_EV_CMD_COMPLETE        0x0e
+struct hci_ev_cmd_complete {
+    __u8     ncmd;
+    __le16   opcode;
+} __packed;
+
+/* ---- HCI Packet structures ---- */
+#define HCI_COMMAND_HDR_SIZE 3
+#define HCI_EVENT_HDR_SIZE   2
+#define HCI_ACL_HDR_SIZE     4
+#define HCI_SCO_HDR_SIZE     3
+
+struct hci_command_hdr {
+    __le16    opcode;        /* OCF & OGF */
+    __u8    plen;
+} __packed;
+
+struct hci_event_hdr {
+    __u8    evt;
+    __u8    plen;
+} __packed;
+
+struct hci_acl_hdr {
+    __le16    handle;        /* Handle & Flags(PB, BC) */
+    __le16    dlen;
+} __packed;
+
+struct hci_sco_hdr {
+    __le16    handle;
+    __u8    dlen;
+} __packed;
+
+static inline struct hci_event_hdr *hci_event_hdr(const struct sk_buff *skb)
+{
+    return (struct hci_event_hdr *) skb->data;
+}
+
+static inline struct hci_acl_hdr *hci_acl_hdr(const struct sk_buff *skb)
+{
+    return (struct hci_acl_hdr *) skb->data;
+}
+
+static inline struct hci_sco_hdr *hci_sco_hdr(const struct sk_buff *skb)
+{
+    return (struct hci_sco_hdr *) skb->data;
+}
+
+/* ---- HCI Ioctl requests structures ---- */
+struct hci_dev_stats {
+    __u32 err_rx;
+    __u32 err_tx;
+    __u32 cmd_tx;
+    __u32 evt_rx;
+    __u32 acl_tx;
+    __u32 acl_rx;
+    __u32 sco_tx;
+    __u32 sco_rx;
+    __u32 byte_rx;
+    __u32 byte_tx;
+};
+/* Realtek - Integrate from hci.h end */
+
+/*****************************************
+** Realtek - Integrate from hci_core.h  **
+*****************************************/
+struct hci_conn_hash {
+    struct list_head list;
+    unsigned int     acl_num;
+    unsigned int     sco_num;
+    unsigned int     le_num;
+};
+
+#define HCI_MAX_SHORT_NAME_LENGTH    10
+
+#define NUM_REASSEMBLY 4
+struct hci_dev {
+    struct mutex    lock;
+
+    char        name[8];
+    unsigned long    flags;
+    __u16        id;
+    __u8        bus;
+    __u8        dev_type;
+
+    struct sk_buff        *reassembly[NUM_REASSEMBLY];
+
+    struct hci_conn_hash    conn_hash;
+
+    struct hci_dev_stats    stat;
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3, 4, 0)
+    atomic_t        refcnt;
+    struct module           *owner;
+    void                    *driver_data;
+#endif
+
+    atomic_t        promisc;
+
+    struct device        *parent;
+    struct device        dev;
+
+    unsigned long        dev_flags;
+
+    int (*open)(struct hci_dev *hdev);
+    int (*close)(struct hci_dev *hdev);
+    int (*flush)(struct hci_dev *hdev);
+    int (*send)(struct sk_buff *skb);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3, 4, 0)
+    void (*destruct)(struct hci_dev *hdev);
+#endif
+    __u16               voice_setting;
+    void (*notify)(struct hci_dev *hdev, unsigned int evt);
+    int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
+};
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3, 4, 0)
+static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
+{
+    atomic_inc(&d->refcnt);
+    return d;
+}
+
+static inline void __hci_dev_put(struct hci_dev *d)
+{
+    if (atomic_dec_and_test(&d->refcnt))
+        d->destruct(d);
+}
+#endif
+
+static inline void *hci_get_drvdata(struct hci_dev *hdev)
+{
+    return dev_get_drvdata(&hdev->dev);
+}
+
+static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
+{
+    dev_set_drvdata(&hdev->dev, data);
+}
+
+#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
+/* Realtek - Integrate from hci_core.h end */
+
+/* -----  HCI Commands ---- */
+#define HCI_OP_INQUIRY            0x0401
+#define HCI_OP_INQUIRY_CANCEL        0x0402
+#define HCI_OP_EXIT_PERIODIC_INQ    0x0404
+#define HCI_OP_CREATE_CONN        0x0405
+#define HCI_OP_DISCONNECT                0x0406
+#define HCI_OP_ADD_SCO            0x0407
+#define HCI_OP_CREATE_CONN_CANCEL    0x0408
+#define HCI_OP_ACCEPT_CONN_REQ        0x0409
+#define HCI_OP_REJECT_CONN_REQ        0x040a
+#define HCI_OP_LINK_KEY_REPLY        0x040b
+#define HCI_OP_LINK_KEY_NEG_REPLY    0x040c
+#define HCI_OP_PIN_CODE_REPLY        0x040d
+#define HCI_OP_PIN_CODE_NEG_REPLY    0x040e
+#define HCI_OP_CHANGE_CONN_PTYPE    0x040f
+#define HCI_OP_AUTH_REQUESTED        0x0411
+#define HCI_OP_SET_CONN_ENCRYPT        0x0413
+#define HCI_OP_CHANGE_CONN_LINK_KEY    0x0415
+#define HCI_OP_REMOTE_NAME_REQ        0x0419
+#define HCI_OP_REMOTE_NAME_REQ_CANCEL    0x041a
+#define HCI_OP_READ_REMOTE_FEATURES    0x041b
+#define HCI_OP_READ_REMOTE_EXT_FEATURES    0x041c
+#define HCI_OP_READ_REMOTE_VERSION    0x041d
+#define HCI_OP_SETUP_SYNC_CONN        0x0428
+#define HCI_OP_ACCEPT_SYNC_CONN_REQ    0x0429
+#define HCI_OP_REJECT_SYNC_CONN_REQ    0x042a
+#define HCI_OP_SNIFF_MODE        0x0803
+#define HCI_OP_EXIT_SNIFF_MODE        0x0804
+#define HCI_OP_ROLE_DISCOVERY        0x0809
+#define HCI_OP_SWITCH_ROLE        0x080b
+#define HCI_OP_READ_LINK_POLICY        0x080c
+#define HCI_OP_WRITE_LINK_POLICY    0x080d
+#define HCI_OP_READ_DEF_LINK_POLICY    0x080e
+#define HCI_OP_WRITE_DEF_LINK_POLICY    0x080f
+#define HCI_OP_SNIFF_SUBRATE        0x0811
+#define HCI_OP_SET_EVENT_MASK        0x0c01
+#define HCI_OP_RESET            0x0c03
+#define HCI_OP_SET_EVENT_FLT        0x0c05
+#define HCI_OP_Write_Extended_Inquiry_Response        0x0c52
+
+/* -----  HCI events---- */
+#define HCI_OP_DISCONNECT        0x0406
+#define HCI_EV_INQUIRY_COMPLETE        0x01
+#define HCI_EV_INQUIRY_RESULT        0x02
+#define HCI_EV_CONN_COMPLETE        0x03
+#define HCI_EV_CONN_REQUEST            0x04
+#define HCI_EV_DISCONN_COMPLETE        0x05
+#define HCI_EV_AUTH_COMPLETE        0x06
+#define HCI_EV_REMOTE_NAME            0x07
+#define HCI_EV_ENCRYPT_CHANGE        0x08
+#define HCI_EV_CHANGE_LINK_KEY_COMPLETE    0x09
+
+#define HCI_EV_REMOTE_FEATURES        0x0b
+#define HCI_EV_REMOTE_VERSION        0x0c
+#define HCI_EV_QOS_SETUP_COMPLETE    0x0d
+#define HCI_EV_CMD_COMPLETE            0x0e
+#define HCI_EV_CMD_STATUS            0x0f
+
+#define HCI_EV_ROLE_CHANGE            0x12
+#define HCI_EV_NUM_COMP_PKTS        0x13
+#define HCI_EV_MODE_CHANGE            0x14
+#define HCI_EV_PIN_CODE_REQ            0x16
+#define HCI_EV_LINK_KEY_REQ            0x17
+#define HCI_EV_LINK_KEY_NOTIFY        0x18
+#define HCI_EV_CLOCK_OFFSET            0x1c
+#define HCI_EV_PKT_TYPE_CHANGE        0x1d
+#define HCI_EV_PSCAN_REP_MODE        0x20
+
+#define HCI_EV_INQUIRY_RESULT_WITH_RSSI    0x22
+#define HCI_EV_REMOTE_EXT_FEATURES    0x23
+#define HCI_EV_SYNC_CONN_COMPLETE    0x2c
+#define HCI_EV_SYNC_CONN_CHANGED    0x2d
+#define HCI_EV_SNIFF_SUBRATE            0x2e
+#define HCI_EV_EXTENDED_INQUIRY_RESULT    0x2f
+#define HCI_EV_IO_CAPA_REQUEST        0x31
+#define HCI_EV_SIMPLE_PAIR_COMPLETE    0x36
+#define HCI_EV_REMOTE_HOST_FEATURES    0x3d
+
+#define CONFIG_MAC_OFFSET_GEN_1_2       (0x3C)      //MAC's OFFSET in config/efuse for realtek generation 1~2 bluetooth chip
+#define CONFIG_MAC_OFFSET_GEN_3PLUS     (0x44)      //MAC's OFFSET in config/efuse for rtk generation 3+ bluetooth chip
+#define CONFIG_MAC_OFFSET_GEN_4PLUS     (0x30)      //MAC's OFFSET in config/efuse for rtk generation 4+ bluetooth chip
+
+/*******************************
+**    Reasil patch code
+********************************/
+#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 TRUE            1
+#define FALSE            0
+#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)
+#define MAX_PATCH_SIZE_24K (1024*24)
+#define MAX_PATCH_SIZE_40K (1024*40)
+
+enum rtk_endpoit {
+    CTRL_EP = 0,
+    INTR_EP = 1,
+    BULK_EP = 2,
+    ISOC_EP = 3
+};
+
+typedef struct {
+    uint16_t    vid;
+    uint16_t    pid;
+    uint16_t    lmp_sub_default;
+    uint16_t    lmp_sub;
+    uint16_t    eversion;
+    char        *mp_patch_name;
+    char        *patch_name;
+    char        *config_name;
+    uint8_t     *fw_cache;
+    int         fw_len;
+    uint16_t    mac_offset;
+    uint32_t    max_patch_size;
+} patch_info;
+
+typedef struct {
+    struct usb_interface    *intf;
+    struct usb_device        *udev;
+    patch_info *patch_entry;
+    int            pipe_in, pipe_out;
+    uint8_t        *send_pkt;
+    uint8_t        *rcv_pkt;
+    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;
+    int            fw_len;
+} firmware_info;
+
+typedef struct {
+    uint8_t index;
+    uint8_t data[PATCH_SEG_MAX];
+} __attribute__((packed)) download_cp;
+
+typedef struct {
+    uint8_t status;
+    uint8_t index;
+} __attribute__((packed)) download_rp;
+
+
+
+//Define ioctl cmd the same as HCIDEVUP in the kernel
+#define DOWN_FW_CFG  _IOW('H', 201, int)
+#ifdef CONFIG_SCO_OVER_HCI
+#define SET_ISO_CFG  _IOW('H', 202, int)
+#endif
+#define GET_USB_INFO            _IOW('H', 203, int)
+#define RESET_CONTROLLER        _IOW('H', 204, int)
+#define DWFW_CMPLT              _IOW('H', 205, int)
+
+
+/*  for altsettings*/
+#include <linux/fs.h>
+#define BDADDR_FILE "/data/misc/bluetooth/bdaddr"
+#define FACTORY_BT_BDADDR_STORAGE_LEN 17
+
+static inline int getmacaddr(uint8_t * vnd_local_bd_addr)
+{
+    struct file  *bdaddr_file;
+    mm_segment_t oldfs;
+    char buf[FACTORY_BT_BDADDR_STORAGE_LEN];
+    int32_t i = 0;
+    int ret = -1;
+    memset(buf, 0, FACTORY_BT_BDADDR_STORAGE_LEN);
+    bdaddr_file = filp_open(BDADDR_FILE, O_RDONLY, 0);
+    if (IS_ERR(bdaddr_file)){
+        RTKBT_INFO("No Mac Config for BT\n");
+        return -1;
+    }
+    oldfs = get_fs(); set_fs(KERNEL_DS);
+    bdaddr_file->f_op->llseek(bdaddr_file, 0, 0);
+    ret = vfs_read(bdaddr_file, buf, FACTORY_BT_BDADDR_STORAGE_LEN, &bdaddr_file->f_pos);
+    set_fs(oldfs);
+    filp_close(bdaddr_file, NULL);
+    if(ret == FACTORY_BT_BDADDR_STORAGE_LEN)
+    {
+        for (i = 0; i < 6; i++) {
+            if(buf[3*i]>'9')
+            {
+                if(buf[3*i]>'Z')
+                    buf[3*i] -=('a'-'A'); //change  a to A
+                buf[3*i] -= ('A'-'9'-1);
+            }
+            if(buf[3*i+1]>'9')
+            {
+                if(buf[3*i+1]>'Z')
+                    buf[3*i+1] -=('a'-'A'); //change  a to A
+                buf[3*i+1] -= ('A'-'9'-1);
+            }
+            vnd_local_bd_addr[5-i] = ((uint8_t)buf[3*i]-'0')*16 + ((uint8_t)buf[3*i+1]-'0');
+        }
+        return 0;
+    }
+    return -1;
+}
+
+static inline int getAltSettings(patch_info *patch_entry, unsigned short *offset, int max_group_cnt)
+{
+    int n = 0;
+    if(patch_entry)
+        offset[n++] = patch_entry->mac_offset;
+/*
+//sample code, add special settings
+
+    offset[n++] = 0x15B;
+*/
+    return n;
+}
+static inline int getAltSettingVal(patch_info *patch_entry, unsigned short offset, unsigned char * val)
+{
+    int res = 0;
+
+    switch(offset)
+    {
+/*
+//sample code, add special settings
+        case 0x15B:
+            val[0] = 0x0B;
+            val[1] = 0x0B;
+            val[2] = 0x0B;
+            val[3] = 0x0B;
+            res = 4;
+            break;
+*/
+        default:
+            res = 0;
+            break;
+    }
+
+    if((patch_entry)&&(offset == patch_entry->mac_offset)&&(res == 0))
+    {
+        if(getmacaddr(val) == 0){
+            RTKBT_INFO("MAC: %02x:%02x:%02x:%02x:%02x:%02x", val[5], val[4], val[3], val[2], val[1], val[0]);
+            res = 6;
+        }
+    }
+    return res;
+}
+
+#endif /* CONFIG_BLUEDROID */