/*
*
* 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 <mach/wmt_misc.h> //added by rubbitxiao
/*******************************/
#include "rtk_btusb.h"
#define VERSION "2.19"
#define DBG_FLAG 0
#if 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)
/*******************************
** 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)
enum rtk_endpoit {
CTRL_EP = 0,
INTR_EP = 1,
BULK_EP = 2,
ISOC_EP = 3
};
typedef struct {
uint16_t prod_id;
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;
} 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;
static patch_info fw_patch_table[] = {
/* { pid, lmp_sub_default, lmp_sub, everion, mp_fw_name, fw_name, config_name, fw_cache, fw_len } */
{ 0x1724, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* RTL8723A */
{ 0x8723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AE */
{ 0xA723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AE for LI */
{ 0x0723, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AE */
{ 0x3394, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AE for Azurewave*/
{ 0x0724, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AU */
{ 0x8725, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AU */
{ 0x872A, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AU */
{ 0x872B, 0x1200, 0, 0, "mp_rtl8723a_fw", "rtl8723a_fw", "rtl8723a_config", NULL, 0 }, /* 8723AU */
{ 0xb720, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723bu_config", NULL, 0 }, /* RTL8723BU */
{ 0xb72A, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723bu_config", NULL, 0 }, /* RTL8723BU */
{ 0xb728, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for LC */
{ 0xb723, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0xb72B, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0xb001, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for HP */
{ 0xb002, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0xb003, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0xb004, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0xb005, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE */
{ 0x3410, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for Azurewave */
{ 0x3416, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for Azurewave */
{ 0x3459, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for Azurewave */
{ 0xE085, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for Foxconn */
{ 0xE08B, 0x8723, 0, 0, "mp_rtl8723b_fw", "rtl8723b_fw", "rtl8723b_config", NULL, 0 }, /* RTL8723BE for Foxconn */
{ 0xA761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au_fw", "rtl8761a_config", NULL, 0 }, /* RTL8761AU only */
{ 0x818B, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761aw8192eu_fw", "rtl8761aw8192eu_config", NULL, 0 }, /* RTL8761AW + 8192EU */
{ 0x818C, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761aw8192eu_fw", "rtl8761aw8192eu_config", NULL, 0 }, /* RTL8761AW + 8192EU */
{ 0x8760, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8192ee_fw", "rtl8761a_config", NULL, 0 }, /* RTL8761AU + 8192EE */
{ 0xB761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8192ee_fw", "rtl8761a_config", NULL, 0 }, /* RTL8761AU + 8192EE */
{ 0x8761, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8192ee_fw", "rtl8761a_config", NULL, 0 }, /* RTL8761AU + 8192EE for LI */
{ 0x8A60, 0x8761, 0, 0, "mp_rtl8761a_fw", "rtl8761au8812ae_fw", "rtl8761a_config", NULL, 0 }, /* RTL8761AU + 8812AE */
{ 0x8821, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
{ 0x0821, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
{ 0x0823, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AU */
{ 0x3414, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
{ 0x3458, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
{ 0x3461, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
{ 0x3462, 0x8821, 0, 0, "mp_rtl8821a_fw", "rtl8821a_fw", "rtl8821a_config", NULL, 0 }, /* RTL8821AE */
/* NOTE: must append patch entries above the null entry */
{ 0, 0, 0, 0, NULL, NULL, NULL, NULL, 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;
//#ifdef CONFIG_HAS_EARLYSUSPEND
#if 0
struct early_suspend early_suspend;
#else
struct notifier_block pm_notifier;
#endif
firmware_info *fw_info;
};
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 1)
static bool reset_on_close = 0;
#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;
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 "rtk_btusb"
struct mutex btchr_mutex;
static struct sk_buff_head btchr_readq;
static wait_queue_head_t btchr_read_wait;
static int 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 = -1;
static int rtk_skb_queue_rear = -1;
static void rtk_enqueue(struct sk_buff *skb)
{
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 {
if (rtk_skb_queue_front == -1) {
rtk_skb_queue_front = 0;
rtk_skb_queue_rear = 0;
} else {
rtk_skb_queue_rear++;
rtk_skb_queue_rear %= QUEUE_SIZE;
}
rtk_skb_queue[rtk_skb_queue_rear] = skb;
}
}
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 == -1) {
RTKBT_WARN("%s: Queue is empty", __func__);
return NULL;
}
skb = rtk_skb_queue[rtk_skb_queue_front];
if (deq_len >= skb->len) {
if (rtk_skb_queue_front == rtk_skb_queue_rear) {
rtk_skb_queue_front = -1;
rtk_skb_queue_rear = -1;
} else {
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 == -1) ? 1 : 0;
}
/*
* 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;
}
if (hdev->open(hdev)) {
ret = -EIO;
goto done;
}
set_bit(HCI_UP, &hdev->flags);
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;
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) {
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]);
}
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)) {
/* 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;
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 = 3;
uint8_t hardware_err_pkt[3] = {HCI_EVENT_PKT, 0x10, 0x00};
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;
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 -1;
}
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);
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__);
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;
poll_wait(file_p, &btchr_read_wait, wait);
return POLLOUT | POLLWRNORM;
}
static struct file_operations bt_chrdev_ops = {
open : btchr_open,
release : btchr_close,
read : btchr_read,
write : btchr_write,
poll : btchr_poll
};
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);
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 ret_val;
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 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 (pid == patch_entry->prod_id)
break;
}
if (i == entry_size) {
RTKBT_ERR("%s: No fw table entry found", __func__);
return NULL;
}
return patch_entry;
}
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("%s: chip id %d, patch length 0x%04x, patch offset 0x%08x, "
"coex version 20%06d-0x%04x, svn version 0x%08x, fw version 0x%08x",
__func__, p_entry->chip_id, p_entry->patch_length, p_entry->start_offset,
coex_date, coex_ver, p_entry->svn_version, p_entry->fw_version);
break;
}
}
return p_entry;
}
/*
* 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)
{
struct hci_rp_read_local_version *read_ver_rsp;
patch_info *patch_entry = NULL;
int ret_val = -1;
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;
}
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;
}
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 1;
} 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;
}
}
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;
}
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;
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, "mp_test", &udev->dev);
if (ret_val > 0)
config_file_buf = kzalloc(cfg->size, GFP_KERNEL);
if (config_file_buf) {
memcpy(config_file_buf, cfg->data, cfg->size);
use_mp_fw = *config_file_buf;
if (1 == use_mp_fw){
fw_name = patch_entry->mp_patch_name;
RTKBT_WARN("%s: use_mp_fw = %04d, fw file name[%s]", __func__, use_mp_fw, fw_name);
}
kfree(config_file_buf);
release_firmware(cfg);
}
*/
ret_val = request_firmware(&cfg, config_name, &udev->dev);
if (ret_val < 0)
config_len = 0;
else {
config_file_buf = kzalloc(cfg->size, GFP_KERNEL);
if (!config_file_buf)
return -ENOMEM;
memcpy(config_file_buf, cfg->data, cfg->size);
config_len = cfg->size;
release_firmware(cfg);
}
ret_val = request_firmware(&fw, fw_name, &udev->dev);
if (ret_val < 0)
goto fw_fail;
else {
epatch_buf = kzalloc(fw->size, GFP_KERNEL);
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);
kfree(epatch_buf);
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__);
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 0x%04x "
"-> not match", __func__, lmp_version, 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 0x%04x "
"-> match", __func__, lmp_version, 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);
}
kfree(epatch_buf);
epatch_buf = NULL;
if (config_len)
memcpy(&buf[buf_len - config_len], config_file_buf, config_len);
}
}
}
}
if (config_file_buf)
kfree(config_file_buf);
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:
if (config_file_buf)
kfree(config_file_buf);
return ret_val;
}
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;
}
/*
* 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;
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;
}
ret_val = check_fw_version(fw_info);
if (ret_val > 0) {
ret_val = download_data(fw_info);
if (ret_val > 0)
RTKBT_DBG("%s: Download fw patch done, fw len %d", __func__, ret_val);
}
/* Free fw data after download finished */
kfree(fw_info->fw_data);
fw_info->fw_data = NULL;
end:
return ret_val;
}
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 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);
}
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;
static uint16_t sco_handle = 0;
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);
sco_handle = *(opcode + 3) | *(opcode + 4) << 8;
if (status == 0) {
hdev->conn_hash.sco_num++;
schedule_work(&data->work);
}
break;
case HCI_EV_DISCONN_COMPLETE:
RTKBT_INFO("%s: HCI_EV_DISCONN_COMPLETE(0x%02x)", __func__, *opcode);
status = *(opcode + 2);
handle = *(opcode + 3) | *(opcode + 4) << 8;
if (status == 0 && sco_handle == handle) {
hdev->conn_hash.sco_num--;
schedule_work(&data->work);
}
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);
check_sco_event(urb);
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))
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;
}
if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
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;
err = download_patch(data->fw_info, 1);
if (err < 0) goto failed;
if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
goto done;
if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
goto done;
err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
if (err < 0)
goto failed;
err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
if (err < 0) {
mdelay(URB_CANCELING_DELAY_MS);
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;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0)
static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
#else
static int btusb_send_frame(struct sk_buff *skb)
{
struct hci_dev *hdev = (struct hci_dev *) skb->dev;
#endif
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;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0)
skb->dev = (void *)hdev;
#endif
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);
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 void btusb_work(struct work_struct *work)
{
struct btusb_data *data = container_of(work, struct btusb_data, work);
struct hci_dev *hdev = data->hdev;
int err;
int new_alts;
if (hdev->conn_hash.sco_num > 0) {
if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
if (err < 0) {
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
mdelay(URB_CANCELING_DELAY_MS);
usb_kill_anchored_urbs(&data->isoc_anchor);
return;
}
set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
}
#if LINUX_VERSION_CODE > KERNEL_VERSION(3, 7, 1)
if (hdev->voice_setting & 0x0020) {
static const int alts[3] = { 2, 4, 5 };
new_alts = alts[hdev->conn_hash.sco_num - 1];
} else{
new_alts = hdev->conn_hash.sco_num;
}
if (data->isoc_altsetting != new_alts) {
#else
if (data->isoc_altsetting != 2) {
new_alts = 2;
#endif
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
mdelay(URB_CANCELING_DELAY_MS);
usb_kill_anchored_urbs(&data->isoc_anchor);
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);
}
} else {
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
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:
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__);
}
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:
/* 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;
}
#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;
}
#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;
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;
}
RTKBT_INFO("%s: download begining...", __func__);
#if CONFIG_BLUEDROID
mutex_lock(&btchr_mutex);
#endif
err = download_patch(fw_info, 0);
/* If download failed, we just throw out a warning */
if (err < 0)
RTKBT_WARN("%s: Failed to download fw patch", __func__);
#if CONFIG_BLUEDROID
mutex_unlock(&btchr_mutex);
#endif
RTKBT_INFO("%s: download ending...", __func__);
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;
}
}
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;
register_pm_notifier(&data->pm_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 = usb_get_intfdata(intf);
struct hci_dev *hdev = NULL;
RTKBT_INFO("%s: usb_interface %p, bInterfaceNumber %d",
__func__, intf, intf->cur_altsetting->desc.bInterfaceNumber);
if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
return;
if (data)
hdev = data->hdev;
else {
RTKBT_WARN("%s: Failed to get bt usb data[Null]", __func__);
return;
}
//#ifdef CONFIG_HAS_EARLYSUSPEND
#if 0
unregister_early_suspend(&data->early_suspend);
#else
unregister_pm_notifier(&data->pm_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;
}
#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);
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 (!test_bit(HCI_RUNNING, &hdev->flags)) {
RTKBT_INFO("%s: Bt is off, download patch before bt is on", __func__);
download_patch(fw_info, 1);
}
if (--data->suspend_count)
return 0;
if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
err = btusb_submit_intr_urb(hdev, GFP_NOIO);
if (err < 0) {
clear_bit(BTUSB_INTR_RUNNING, &data->flags);
goto failed;
}
}
if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
if (err < 0) {
clear_bit(BTUSB_BULK_RUNNING, &data->flags);
goto failed;
}
btusb_submit_bulk_urb(hdev, GFP_NOIO);
}
if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
else
btusb_submit_isoc_urb(hdev, GFP_NOIO);
}
spin_lock_irq(&data->txlock);
play_deferred(data);
clear_bit(BTUSB_SUSPENDING, &data->flags);
spin_unlock_irq(&data->txlock);
schedule_work(&data->work);
return 0;
failed:
mdelay(URB_CANCELING_DELAY_MS);
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;
wifi_power_ctrl(1);//added by rubbit
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 = 1;
#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)
{
RTKBT_INFO("Realtek Bluetooth USB driver module exit");
#if CONFIG_BLUEDROID
if (bt_char_dev_registered > 0)
btchr_exit();
#endif
usb_deregister(&btusb_driver);
wifi_power_ctrl(0);//added by rubbit
}
module_init(btusb_init);
module_exit(btusb_exit);
MODULE_AUTHOR("Realtek Corporation");
MODULE_DESCRIPTION("Realtek Bluetooth USB driver version");
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");