Initial file dump from open source releaseHEADmaster

1 files changed, 1098 insertions, 0 deletions

diff --git a/drivers/bluetooth/brcm_lpm.c b/drivers/bluetooth/brcm_lpm.c
new file mode 100644
index 00000000..0b23b69a
--- /dev/null
+++ b/drivers/bluetooth/brcm_lpm.c
@@ -0,0 +1,1098 @@
+/*
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation.
+
+   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
+
+   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.
+
+
+   Copyright (C) 2006-2007 - Motorola
+   Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
+
+   Date         Author           Comment
+   -----------  --------------   --------------------------------
+   2006-Apr-28  Motorola         The kernel module for running the Bluetooth(R)
+                                 Sleep-Mode Protocol from the Host side
+   2006-Sep-08  Motorola         Added workqueue for handling sleep work.
+   2007-Jan-24  Motorola         Added mbm_handle_ioi() call to ISR.
+   2009-Aug-10  Motorola         Changed "add_timer" to "mod_timer" to solve
+                                 race when flurry of queued work comes in.
+*/
+
+#include <linux/module.h>       /* kernel module definitions */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/uaccess.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+
+#include <linux/irq.h>
+#include <linux/ioport.h>
+#include <linux/param.h>
+#include <linux/bitops.h>
+#include <linux/termios.h>
+#include <linux/wakelock.h>
+//#include <mach/gpio.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+//#include <mach/serial.h>
+#include <linux/serial_core.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h> /* event notifications */
+#include "hci_uart.h"
+#include <linux/seq_file.h>
+
+
+//#define BT_SLEEP_DBG	pr_debug
+#define BT_SLEEP_DBG BT_ERR
+/*
+ * Defines
+ */
+
+#define VERSION         "1.1"
+#define PROC_DIR        "bluetooth/sleep"
+
+#define POLARITY_LOW 0
+#define POLARITY_HIGH 1
+
+#define BT_PORT_ID	0
+
+/* enable/disable wake-on-bluetooth */
+#define BT_ENABLE_IRQ_WAKE 1
+
+#define BT_BLUEDROID_SUPPORT 1
+
+enum {
+	DEBUG_USER_STATE = 1U << 0,
+	DEBUG_SUSPEND = 1U << 1,
+	DEBUG_BTWAKE = 1U << 2,
+	DEBUG_VERBOSE = 1U << 3,
+};
+struct workqueue_struct *hostwake_work_queue;
+
+static int debug_mask = DEBUG_USER_STATE;
+module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
+
+struct bluesleep_info {
+        unsigned host_wake;
+        unsigned ext_wake;
+        unsigned host_wake_irq;
+        struct uart_port *uport;
+//        struct wake_lock wake_lock;
+		struct wake_lock BT_wakelock;
+		struct wake_lock host_wakelock;
+	    int irq_polarity;
+	    int has_ext_wake;
+};
+
+/* work function */
+static void bluesleep_sleep_work(struct work_struct *work);
+
+/* work queue */
+DECLARE_DELAYED_WORK(sleep_workqueue, bluesleep_sleep_work);
+
+/* Macros for handling sleep work */
+#define bluesleep_rx_busy()     schedule_delayed_work(&sleep_workqueue, 0)
+#define bluesleep_tx_busy()     schedule_delayed_work(&sleep_workqueue, 0)
+#define bluesleep_rx_idle()     schedule_delayed_work(&sleep_workqueue, 0)
+#define bluesleep_tx_idle()     schedule_delayed_work(&sleep_workqueue, 0)
+
+/* 1 second timeout */
+#define TX_TIMER_INTERVAL      8   //after 10S  DEV pin change,the BT can sleep
+
+/* state variable names and bit positions */
+#define BT_PROTO        0x01
+#define BT_TXDATA       0x02
+#define BT_ASLEEP       0x04
+#define BT_EXT_WAKE	0x08
+#define BT_SUSPEND	0x10
+
+#if BT_BLUEDROID_SUPPORT
+static bool has_lpm_enabled = false;
+#else
+/* global pointer to a single hci device. */
+static struct hci_dev *bluesleep_hdev;
+#endif
+
+static struct platform_device *bluesleep_uart_dev;
+static struct bluesleep_info *bsi;
+static bool is_bt_stoped=0;
+
+/* module usage */
+static atomic_t open_count = ATOMIC_INIT(1);
+
+/*
+ * Local function prototypes
+ */
+#if !BT_BLUEDROID_SUPPORT
+static int bluesleep_hci_event(struct notifier_block *this,
+			unsigned long event, void *data);
+#endif
+static int bluesleep_start(void);
+static void bluesleep_stop(void);
+extern struct uart_port * serial_get_uart_port(int uart_index);
+/*
+ * Global variables
+ */
+
+/** Global state flags */
+static unsigned long flags;
+
+/** Tasklet to respond to change in hostwake line */
+static struct tasklet_struct hostwake_task;
+
+/** Transmission timer */
+static void bluesleep_tx_timer_expire(unsigned long data);
+static DEFINE_TIMER(tx_timer, bluesleep_tx_timer_expire, 0, 0);
+
+/** Lock for state transitions */
+static spinlock_t rw_lock;
+
+#if !BT_BLUEDROID_SUPPORT
+/** Notifier block for HCI events */
+struct notifier_block hci_event_nblock = {
+        .notifier_call = bluesleep_hci_event,
+};
+#endif
+
+struct proc_dir_entry *bluetooth_dir, *sleep_dir;
+
+/*
+ * Local functions
+ */
+
+static void hsuart_power(int on)
+{BT_ERR("hsuart_power");
+	if (test_bit(BT_SUSPEND, &flags))
+		return;
+	if (on) {
+	  //msm_hs_request_clock_on(bsi->uport);
+	  //	msm_hs_set_mctrl(bsi->uport, TIOCM_RTS);
+	} else {
+	  //	msm_hs_set_mctrl(bsi->uport, 0);
+	  //	msm_hs_request_clock_off(bsi->uport);
+	}
+	BT_SLEEP_DBG("uart power %d\n", on);
+}
+
+
+/**
+ * @return 1 if the Host can go to sleep, 0 otherwise.
+ */
+int bluesleep_can_sleep(void)
+{
+        /* check if WAKE_BT_GPIO and BT_WAKE_GPIO are both deasserted */
+	BT_SLEEP_DBG("bt_wake %d, host_wake %d, uport %p"
+			      , gpio_get_value(bsi->ext_wake)
+			      , gpio_get_value(bsi->host_wake)
+			      , bsi->uport);
+	return ((gpio_get_value(bsi->host_wake) != bsi->irq_polarity) &&
+		(test_bit(BT_EXT_WAKE, &flags)) &&
+		(bsi->uport != NULL));
+}
+
+void bluesleep_sleep_wakeup(void)
+{  BT_ERR("bluesleep_sleep_wakeup");
+        if (test_bit(BT_ASLEEP, &flags)) {
+                BT_SLEEP_DBG("waking up...");
+               // wake_lock(&bsi->wake_lock); //wake
+                /* Start the timer */
+                mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ));
+		if (bsi->has_ext_wake == 1)
+                gpio_set_value(bsi->ext_wake, 0);
+		clear_bit(BT_EXT_WAKE, &flags);
+                clear_bit(BT_ASLEEP, &flags);
+                /*Activating UART */
+                hsuart_power(1);
+        }
+}
+
+/**
+ * @brief@  main sleep work handling function which update the flags
+ * and activate and deactivate UART ,check FIFO.
+ */
+static void bluesleep_sleep_work(struct work_struct *work)
+{
+        BT_ERR("bluesleep_sleep_work");
+        if (bluesleep_can_sleep()) {
+		BT_SLEEP_DBG("can sleep...");
+                /* already asleep, this is an error case */
+                if (test_bit(BT_ASLEEP, &flags)) {
+                        BT_SLEEP_DBG("already asleep");
+                        return;
+                }
+
+                if (bsi->uport->ops->tx_empty(bsi->uport)) {
+                        BT_SLEEP_DBG("going to sleep...");
+                        set_bit(BT_ASLEEP, &flags);
+                        /*Deactivating UART */
+                        hsuart_power(0);
+                        /* UART clk is not turned off immediately. Release
+                         * wakelock after 500 ms.
+                         */
+                       // wake_lock_timeout(&bsi->wake_lock, HZ / 2);
+                } else {
+			BT_SLEEP_DBG("tx buffer is not empty, modify timer...");
+			/*lgh add*/
+			/*lgh add end*/
+			mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ));
+			return;
+                }
+	} else if (test_bit(BT_EXT_WAKE, &flags)
+			&& !test_bit(BT_ASLEEP, &flags)) {
+		BT_SLEEP_DBG("can not sleep, bt_wake %d", gpio_get_value(bsi->ext_wake) );
+                mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ));
+                gpio_set_value(bsi->ext_wake, 0);
+		clear_bit(BT_EXT_WAKE, &flags);
+        }else {
+                bluesleep_sleep_wakeup();
+        }
+}
+
+/**
+ * A workqueue that runs in workqueue context and reads the value
+ * of the HOST_WAKE GPIO pin and further defer the work.
+ * @param work Not used.
+ */
+static void bluesleep_hostwake_task(unsigned long data)
+{
+        BT_ERR("hostwake line change");
+		BT_ERR("irq_polarity=%d\n",bsi->irq_polarity);
+		BT_ERR("bsi->host_wake=%d\n",gpio_get_value(bsi->host_wake));
+
+	spin_lock(&rw_lock);
+	if ((gpio_get_value(bsi->host_wake) == bsi->irq_polarity))
+		bluesleep_rx_busy();
+	else
+		bluesleep_rx_idle();
+
+	spin_unlock(&rw_lock);
+}
+
+/**
+ * Handles proper timer action when outgoing data is delivered to the
+ * HCI line discipline. Sets BT_TXDATA.
+ */
+static void bluesleep_outgoing_data(void)
+{      
+        unsigned long irq_flags;
+        BT_ERR("bluesleep_outgoing_data\n");
+        spin_lock_irqsave(&rw_lock, irq_flags);
+		wake_lock(&bsi->BT_wakelock);
+
+
+		if (bsi->has_ext_wake == 1)               //wsh
+        gpio_set_value(bsi->ext_wake, 0);         //wsh
+		set_bit(BT_EXT_WAKE, &flags);             //wsh
+		
+
+        /* log data passing by */
+        set_bit(BT_TXDATA, &flags);
+
+	spin_unlock_irqrestore(&rw_lock, irq_flags);
+	mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ)); //add
+	#if 0
+        /* if the tx side is sleeping... */
+	if (test_bit(BT_EXT_WAKE, &flags)) {
+
+                BT_SLEEP_DBG("tx was sleeping");
+                bluesleep_sleep_wakeup();
+        }
+	#endif
+}
+
+static ssize_t bluesleep_write_proc_lpm(struct file *file, const char __user *buffer,
+					size_t count, loff_t *pos)
+{
+	char b;
+	BT_ERR("bluesleep_write_proc_lpm\n");
+
+	if (count < 1)
+		return -EINVAL;
+
+	if (copy_from_user(&b, buffer, 1))
+		return -EFAULT;
+   BT_ERR("bluesleep_write_proc_lpm_b=%d\n",b);
+	if (b == '0') {
+		/* HCI_DEV_UNREG */
+		bluesleep_stop();
+		has_lpm_enabled = false;
+		bsi->uport = NULL;
+	} else {
+		/* HCI_DEV_REG */
+		if (!has_lpm_enabled) {
+			has_lpm_enabled = true;
+			bsi->uport = serial_get_uart_port(BT_PORT_ID);
+			/* if bluetooth started, start bluesleep*/
+			bluesleep_start();
+		}
+	}
+
+	return count;
+}
+
+
+static int lpm_proc_show(struct seq_file * m,void * v)
+{
+	//unsigned int lpm;
+	BT_ERR("bluesleep_read_proc_lpm\n");
+	seq_printf(m, "unsupported to read\n");
+	return 0;
+}
+
+static int bluesleep_open_proc_lpm(struct inode *inode, struct file *file)
+{
+	return single_open(file, lpm_proc_show, PDE_DATA(inode));
+
+}
+static ssize_t bluesleep_write_proc_btwrite(struct file *file, const char __user *buffer,size_t count, loff_t *pos)
+{                           
+	char b;
+	BT_ERR("bluesleep_write_proc_btwrite");
+
+	if (count < 1)
+		return -EINVAL;
+	if (is_bt_stoped==1)
+		return count;
+
+	if (copy_from_user(&b, buffer, 1))
+		return -EFAULT;
+	BT_ERR("bluesleep_write_proc_btwrite=%d",b);
+
+	/* HCI_DEV_WRITE */
+	if (b != '0')
+		bluesleep_outgoing_data();
+
+	return count;
+}
+static int btwrite_proc_show(struct seq_file * m,void * v)
+{
+	//unsigned int btwrite;
+	BT_ERR("bluesleep_read_proc_lpm\n");
+	seq_printf(m, "unsupported to read\n");
+	return 0;
+}
+
+static int bluesleep_open_proc_btwrite(struct inode *inode, struct file *file)
+{
+	return single_open(file, btwrite_proc_show, PDE_DATA(inode));
+
+}
+
+/**
+ * Handles transmission timer expiration.
+ * @param data Not used.
+ */
+static void bluesleep_tx_timer_expire(unsigned long data)
+{   
+	if(bsi->uport==NULL)
+		return;
+	if (bsi->uport->ops->tx_empty(bsi->uport))
+    	{  BT_ERR("empty");
+           gpio_set_value(bsi->ext_wake, 1);
+		   wake_unlock(&bsi->BT_wakelock);
+    	}
+	else
+		{
+		  BT_ERR("not  empty");
+		  mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL*HZ));
+		}
+
+     //gpio_set_value(bsi->ext_wake, 1);
+#if 0
+        unsigned long irq_flags;
+		BT_ERR("bluesleep_tx_timer_expire");
+
+        spin_lock_irqsave(&rw_lock, irq_flags);
+
+        BT_SLEEP_DBG("Tx timer expired");
+
+        /* were we silent during the last timeout? */
+        if (!test_bit(BT_TXDATA, &flags)) {
+                BT_SLEEP_DBG("Tx has been idle");
+		if (bsi->has_ext_wake == 1)
+                gpio_set_value(bsi->ext_wake, 1);
+
+                bluesleep_tx_idle();
+        } else {
+                BT_SLEEP_DBG("Tx data during last period");
+                mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL*HZ));
+        }
+
+        /* clear the incoming data flag */
+        clear_bit(BT_TXDATA, &flags);
+
+        spin_unlock_irqrestore(&rw_lock, irq_flags);
+#endif
+}
+
+/**
+ * Schedules a workqueue to run when receiving an interrupt on the
+ * <code>HOST_WAKE</code> GPIO pin.
+ * @param irq Not used.
+ * @param dev_id Not used.
+ */
+static irqreturn_t bluesleep_hostwake_isr(int irq, void *dev_id)
+{
+	/* schedule a tasklet to handle the change in the host wake line */
+
+	int ext_wake, host_wake;
+	BT_ERR("bluesleep_hostwake_isr\n");
+	ext_wake = gpio_get_value(bsi->ext_wake);
+	host_wake = gpio_get_value(bsi->host_wake);
+	BT_DBG("ext_wake : %d, host_wake : %d", ext_wake, host_wake);
+    if(host_wake== 0)
+    	{
+    	  wake_lock(&bsi->host_wakelock);
+		  irq_set_irq_type(irq, IRQF_TRIGGER_HIGH);  
+
+    	}
+	else
+		{
+		  //wake_unlock(&bsi->host_wakelock);
+		  wake_lock_timeout(&bsi->host_wakelock, HZ*5);
+		  irq_set_irq_type(irq,IRQF_TRIGGER_LOW);
+		}
+		
+//	irq_set_irq_type(irq, host_wake ? IRQF_TRIGGER_LOW : IRQF_TRIGGER_HIGH);
+	if (host_wake == 0) {
+		BT_DBG("bluesleep_hostwake_isr : Registration Tasklet");
+	   // tasklet_schedule(&hostwake_task);
+	}
+	
+	return IRQ_HANDLED;
+}
+
+/**
+ * Starts the Sleep-Mode Protocol on the Host.
+ * @return On success, 0. On error, -1, and <code>errno</code> is set
+ * appropriately.
+ */
+static int bluesleep_start(void)
+{
+        int retval;
+        unsigned long irq_flags;
+       	BT_ERR("bluesleep_start\n");
+		is_bt_stoped=0;
+        spin_lock_irqsave(&rw_lock, irq_flags);
+
+        if (test_bit(BT_PROTO, &flags)) {
+                spin_unlock_irqrestore(&rw_lock, irq_flags);
+                return 0;
+        }
+
+        spin_unlock_irqrestore(&rw_lock, irq_flags);
+
+        if (!atomic_dec_and_test(&open_count)) {
+                atomic_inc(&open_count);
+                return -EBUSY;
+        }
+
+        /* start the timer */
+        mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ));
+
+        /* assert BT_WAKE */
+	if (bsi->has_ext_wake == 1)
+        gpio_set_value(bsi->ext_wake, 0);
+	clear_bit(BT_EXT_WAKE, &flags);
+#if BT_ENABLE_IRQ_WAKE
+	retval = enable_irq_wake(bsi->host_wake_irq);
+	if (retval < 0) {
+		BT_ERR("Couldn't enable BT_HOST_WAKE as wakeup interrupt");
+		goto fail;
+	}
+#endif
+	set_bit(BT_PROTO, &flags);
+	//wake_lock(&bsi->wake_lock);
+	return 0;
+fail:
+        del_timer(&tx_timer);
+        atomic_inc(&open_count);
+
+        return retval;
+}
+
+/**
+ * Stops the Sleep-Mode Protocol on the Host.
+ */
+static void bluesleep_stop(void)
+{
+        unsigned long irq_flags;
+		BT_ERR("bluesleep_stop\n");
+
+        spin_lock_irqsave(&rw_lock, irq_flags);
+
+        if (!test_bit(BT_PROTO, &flags)) {
+                spin_unlock_irqrestore(&rw_lock, irq_flags);
+                return;
+        }
+
+        /* assert BT_WAKE */
+	if (bsi->has_ext_wake == 1)
+        gpio_set_value(bsi->ext_wake, 0);
+	clear_bit(BT_EXT_WAKE, &flags);
+        del_timer(&tx_timer);
+        clear_bit(BT_PROTO, &flags);
+
+	if (test_bit(BT_ASLEEP, &flags)) {
+		clear_bit(BT_ASLEEP, &flags);
+		spin_unlock_irqrestore(&rw_lock, irq_flags);
+		hsuart_power(1);
+	} else {
+		spin_unlock_irqrestore(&rw_lock, irq_flags);
+	}
+
+        atomic_inc(&open_count);
+
+#if BT_ENABLE_IRQ_WAKE
+        if (disable_irq_wake(bsi->host_wake_irq))
+                BT_SLEEP_DBG("Couldn't disable hostwake IRQ wakeup mode\n");
+#endif
+	wake_unlock(&bsi->host_wakelock);
+	wake_unlock(&bsi->BT_wakelock);
+	is_bt_stoped=1;
+     //  wake_lock_timeout(&bsi->wake_lock, HZ / 2);
+}
+
+/**
+ * Write the <code>BT_WAKE</code> GPIO pin value via the proc interface.
+ * @param file Not used.
+ * @param buffer The buffer to read from.
+ * @param count The number of bytes to be written.
+ * @param data Not used.
+ * @return On success, the number of bytes written. On error, -1, and
+ * <code>errno</code> is set appropriately.
+ */
+static ssize_t bluepower_write_proc_btwake(struct file *file, const char __user *buffer,
+                                            size_t count, loff_t *pos)
+{
+        char *buf;
+		BT_ERR("bluepower_write_proc_btwake\n");
+
+        if (count < 1)
+              return -EINVAL;
+
+        buf = kmalloc(count, GFP_KERNEL);
+        if (!buf)
+              return -ENOMEM;
+
+        if (copy_from_user(buf, buffer, count)) {
+              kfree(buf);
+              return -EFAULT;
+        }
+
+        if (buf[0] == '0') {
+		if (bsi->has_ext_wake == 1)
+              gpio_set_value(bsi->ext_wake, 0);
+		clear_bit(BT_EXT_WAKE, &flags);
+        } 
+		else if (buf[0] == '1') {
+		if (bsi->has_ext_wake == 1)
+              gpio_set_value(bsi->ext_wake, 1);
+		set_bit(BT_EXT_WAKE, &flags);
+        } else {
+              kfree(buf);
+              return -EINVAL;
+        }
+
+        kfree(buf);
+
+        return count;
+}
+static int btwake_proc_show(struct seq_file *m, void *v)
+{
+	unsigned int btwake;
+	btwake = test_bit(BT_EXT_WAKE, &flags) ? 1 : 0;
+//	return sprintf(buff, "asleep: %u\n", asleep); //cat: asleep:0
+        seq_printf(m, "%u\n", btwake);
+	return 0;
+}
+
+static int bluepower_open_proc_btwake(struct inode *inode, struct file *file)
+{
+	return single_open(file, btwake_proc_show, PDE_DATA(inode));
+
+}
+
+
+
+static int hostwake_proc_show(struct seq_file *m, void *v)
+{
+	unsigned int hostwake;
+	hostwake = gpio_get_value(bsi->host_wake);
+    seq_printf(m, "%u\n", hostwake);
+	return 0;
+}
+
+static int bluepower_open_proc_hostwake(struct inode *inode, struct file *file)
+{
+	return single_open(file, hostwake_proc_show, PDE_DATA(inode));
+
+}
+
+
+
+static int bluesleep_proc_show(struct seq_file *m, void *v)
+{
+//	seq_printf(m, "%d\n", val);
+	unsigned int asleep;
+	asleep = test_bit(BT_ASLEEP, &flags) ? 1 : 0;
+//	return sprintf(buff, "asleep: %u\n", asleep); //cat: asleep:0
+    seq_printf(m, "%u\n", asleep);
+//	seq_puts()
+
+	return 0;
+}
+
+static int bluesleep_open_proc_asleep(struct inode *inode, struct file *file)
+{
+	return single_open(file, bluesleep_proc_show, PDE_DATA(inode));
+
+}
+
+static ssize_t bluesleep_write_proc_proto(struct file *filp,const char __user *buff, size_t count, loff_t *pos)
+{
+        char proto;
+		BT_ERR("bluesleep_write_proc_proto\n");
+
+       if(count>0){
+        if (copy_from_user(&proto, buff, 1))    //or get_user(proto, buffer)
+            return -EFAULT;
+		
+	     BT_SLEEP_DBG("write proto %c", proto);
+
+        if (proto == '0')
+                bluesleep_stop();
+        else
+                bluesleep_start();
+       	}
+
+        /* claim that we wrote everything */
+        return count; 
+}
+
+
+static int proto_proc_show(struct seq_file *m, void *v)
+{
+	unsigned int proto;
+	proto = test_bit(BT_PROTO, &flags) ? 1 : 0;
+    seq_printf(m, "%u\n", proto);
+	return 0;
+}
+
+static int bluesleep_open_proc_proto(struct inode *inode, struct file *file)
+{
+	return single_open(file, proto_proc_show, PDE_DATA(inode));
+
+}
+
+
+
+void bluesleep_setup_uart_port(struct platform_device *uart_dev)
+{
+	bluesleep_uart_dev = uart_dev;
+}
+
+static int bluesleep_populate_dt_pinfo(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	int tmp;
+
+	tmp = of_get_named_gpio(np, "host-wake-gpio", 0);
+	if (tmp < 0) {
+		BT_ERR("couldn't find host_wake gpio");
+		return -ENODEV;
+	}
+	bsi->host_wake = tmp;
+
+	tmp = of_get_named_gpio(np, "bt-wake-gpio", 0);
+	if (tmp < 0)
+		bsi->has_ext_wake = 0;
+	else
+		bsi->has_ext_wake = 1;
+
+	if (bsi->has_ext_wake)
+		bsi->ext_wake = tmp;
+
+	BT_INFO("bt_host_wake %d, bt-wake-gpio %d",
+			bsi->host_wake,
+			bsi->ext_wake);
+	return 0;
+}
+
+static int bluesleep_populate_pinfo(struct platform_device *pdev)
+{
+	struct resource *res;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_IO,
+				"gpio_host_wake");
+	if (!res) {
+		BT_ERR("couldn't find host_wake gpio");
+		return -ENODEV;
+	}
+	bsi->host_wake = res->start;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_IO,
+				"gpio_ext_wake");
+	if (!res)
+		bsi->has_ext_wake = 0;
+	else
+		bsi->has_ext_wake = 1;
+
+	if (bsi->has_ext_wake)
+		bsi->ext_wake = res->start;
+
+	return 0;
+}
+
+static int bluesleep_probe(struct platform_device *pdev)
+{
+	//struct resource *res;
+	int ret;
+
+	bsi = kzalloc(sizeof(struct bluesleep_info), GFP_KERNEL);
+	if (!bsi)
+		return -ENOMEM;
+
+	if (pdev->dev.of_node) {
+		ret = bluesleep_populate_dt_pinfo(pdev);
+		if (ret < 0) {
+			BT_ERR("couldn't populate info from dt");
+			return ret;
+		}
+	} else {
+		ret = bluesleep_populate_pinfo(pdev);
+		if (ret < 0) {
+			BT_ERR("couldn't populate info");
+			return ret;
+		}
+	}
+
+	/* configure host_wake as input */
+	ret = gpio_request_one(bsi->host_wake, GPIOF_IN, "bt_host_wake");
+	if (ret < 0) {
+		BT_ERR("failed to configure input"
+				" direction for GPIO %d, error %d",
+				bsi->host_wake, ret);
+		goto free_bsi;
+	}
+
+	if (debug_mask & DEBUG_BTWAKE)
+		pr_info("BT WAKE: set to wake\n");
+	if (bsi->has_ext_wake) {
+		/* configure ext_wake as output mode*/
+		ret = gpio_request_one(bsi->ext_wake,
+				GPIOF_OUT_INIT_LOW, "bt_ext_wake");
+		if (ret < 0) {
+			BT_ERR("failed to configure output"
+				" direction for GPIO %d, error %d",
+				  bsi->ext_wake, ret);
+			goto free_bt_host_wake;
+		}
+	}
+	clear_bit(BT_EXT_WAKE, &flags);
+
+	BT_SLEEP_DBG("allocat irq hostwake = %d\n", bsi->host_wake);
+				//bsi->host_wake_irq = sprd_alloc_gpio_irq(bsi->host_wake);  
+	bsi->host_wake_irq = gpio_to_irq(bsi->host_wake);  
+	BT_SLEEP_DBG("irq = bsi->host_wake_irq %d", bsi->host_wake_irq);
+	if (bsi->host_wake_irq < 0) {
+	   BT_SLEEP_DBG("couldn't find host_wake irq\n");
+	   ret = -ENODEV;
+	   goto free_bt_ext_wake;
+				}
+
+
+	bsi->irq_polarity = POLARITY_LOW;/*low edge (falling edge)*/
+
+	//wake_lock_init(&bsi->wake_lock, WAKE_LOCK_SUSPEND, "bluesleep");
+	
+	wake_lock_init(&bsi->BT_wakelock, WAKE_LOCK_SUSPEND, "bluesleep1");
+	wake_lock_init(&bsi->host_wakelock, WAKE_LOCK_SUSPEND, "bluesleep2");
+	clear_bit(BT_SUSPEND, &flags);
+
+	BT_INFO("host_wake_irq %d, polarity %d",
+			bsi->host_wake_irq,
+			bsi->irq_polarity);
+
+	ret = request_irq(bsi->host_wake_irq, bluesleep_hostwake_isr,
+			//IRQF_TRIGGER_FALLING |IRQF_NO_SUSPEND, remove yan
+			(IRQF_TRIGGER_LOW|IRQF_NO_SUSPEND),  //add low level
+			"bt_host_wake", bsi);
+
+	if (ret  < 0) {
+		BT_ERR("Couldn't acquire BT_HOST_WAKE IRQ");
+		goto free_bt_ext_wake;
+	}
+
+	return 0;
+
+free_bt_ext_wake:
+        gpio_free(bsi->ext_wake);
+free_bt_host_wake:
+        gpio_free(bsi->host_wake);
+free_bsi:
+        kfree(bsi);
+        return ret;
+}
+
+static int bluesleep_remove(struct platform_device *pdev)
+{  BT_ERR("bluesleep_remove");
+	free_irq(bsi->host_wake_irq, NULL);
+        gpio_free(bsi->host_wake);
+        gpio_free(bsi->ext_wake);
+      //  wake_lock_destroy(&bsi->wake_lock);
+      wake_lock_destroy(&bsi->BT_wakelock);
+      wake_lock_destroy(&bsi->host_wakelock);
+      
+        kfree(bsi);
+        return 0;
+}
+
+
+static int bluesleep_resume(struct platform_device *pdev)
+{   BT_ERR("bluesleep_resume");
+	if (test_bit(BT_SUSPEND, &flags)) {
+		if (debug_mask & DEBUG_SUSPEND)
+			BT_ERR("bluesleep resuming...\n");
+		if ((bsi->uport != NULL) &&
+			(gpio_get_value(bsi->host_wake) == bsi->irq_polarity)) {
+			if (debug_mask & DEBUG_SUSPEND)
+				BT_ERR("bluesleep resume from BT event...\n");
+//			msm_hs_request_clock_on(bsi->uport);   ???????????????????
+//			msm_hs_set_mctrl(bsi->uport, TIOCM_RTS);????????????????
+		}
+		clear_bit(BT_SUSPEND, &flags);
+	}
+	return 0;
+}
+
+static int bluesleep_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	if (debug_mask & DEBUG_SUSPEND)
+		pr_info("bluesleep suspending...\n");
+	set_bit(BT_SUSPEND, &flags);
+	return 0;
+}
+
+static struct of_device_id bluesleep_match_table[] = {
+	{ .compatible = "broadcom,bluesleep" },
+	{}
+};
+
+static struct platform_driver bluesleep_driver = {
+        .probe = bluesleep_probe,
+        .remove = bluesleep_remove,
+	.suspend = bluesleep_suspend,
+	.resume = bluesleep_resume,
+        .driver = {
+                .name = "bluesleep",
+                .owner = THIS_MODULE,
+		.of_match_table = bluesleep_match_table,
+        },
+};
+
+
+static const struct file_operations lpm_proc_btwake_fops = {
+	.owner = THIS_MODULE,
+	.open = bluepower_open_proc_btwake,
+	.read = seq_read,
+	.write = bluepower_write_proc_btwake,
+	.release = single_release,
+};
+
+
+static const struct file_operations lpm_proc_hostwake_fops = {
+		.owner = THIS_MODULE,
+		.open = bluepower_open_proc_hostwake,
+		.read = seq_read,
+		.release = single_release,
+	};
+
+static const struct file_operations lpm_proc_proto_fops = {
+	.owner = THIS_MODULE,
+	.open= bluesleep_open_proc_proto,
+	.read=seq_read,
+	.write = bluesleep_write_proc_proto,
+	.release = single_release,
+};
+
+static const struct file_operations lpm_proc_asleep_fops = {
+	.owner = THIS_MODULE,
+	.open= bluesleep_open_proc_asleep,
+	.read= seq_read,
+//	.read = bluesleep_read_proc_asleep,
+	.release = single_release,
+};
+
+static const struct file_operations lpm_proc_lpm_fops = {
+	.owner = THIS_MODULE,
+	.open= bluesleep_open_proc_lpm,
+	.read = seq_read,
+	.write = bluesleep_write_proc_lpm,
+	.release = single_release,
+};
+
+static const struct file_operations lpm_proc_btwrite_fops = {
+	.owner = THIS_MODULE,
+	.open = bluesleep_open_proc_btwrite,
+	.read = seq_read,
+	.write = bluesleep_write_proc_btwrite,
+	.release = single_release,
+};
+
+
+
+
+
+
+/**
+ * Initializes the module.
+ * @return On success, 0. On error, -1, and <code>errno</code> is set
+ * appropriately.
+ */
+static int __init bluesleep_init(void)
+{
+        int retval;
+        struct proc_dir_entry *ent;
+//	    char name[64];
+
+        BT_SLEEP_DBG("BlueSleep Mode Driver Ver %s", VERSION);
+/***************************************************************/
+		tasklet_init(&hostwake_task, bluesleep_hostwake_task, (unsigned long)bsi);
+        flags = 0; /* clear all status bits */
+
+        /* Initialize spinlock. */
+        spin_lock_init(&rw_lock);
+
+        /* Initialize timer */
+        init_timer(&tx_timer);
+        tx_timer.function = bluesleep_tx_timer_expire;
+        tx_timer.data = 0;
+/*********************************************************************/
+        retval = platform_driver_register(&bluesleep_driver);
+        if (retval)
+            return retval;
+
+	if (bsi == NULL)
+		return 0;
+
+#if !BT_BLUEDROID_SUPPORT
+	bluesleep_hdev = NULL;
+#endif
+
+        bluetooth_dir = proc_mkdir("bluetooth", NULL);
+        if (bluetooth_dir == NULL) {
+                BT_SLEEP_DBG("Unable to create /proc/bluetooth directory");
+                return -ENOMEM;
+        }
+
+        sleep_dir = proc_mkdir("sleep", bluetooth_dir);
+        if (sleep_dir == NULL) {
+                BT_SLEEP_DBG("Unable to create /proc/%s directory", PROC_DIR);
+                return -ENOMEM;
+        }
+
+        /* Creating read/write  entry */
+		ent=proc_create("btwake", S_IRUGO | S_IWUSR | S_IWGRP, sleep_dir,&lpm_proc_btwake_fops);  /*read/write */
+		ent=proc_create("hostwake", S_IRUGO, sleep_dir,&lpm_proc_hostwake_fops);                  /* only read */
+		ent=proc_create("proto", S_IRUGO | S_IWUSR | S_IWGRP, sleep_dir,&lpm_proc_proto_fops);    /* read/write */
+		ent=proc_create("asleep", S_IRUGO, sleep_dir,&lpm_proc_asleep_fops);                      /* only read */
+#if BT_BLUEDROID_SUPPORT
+		ent=proc_create("lpm", S_IRUGO | S_IWUSR | S_IWGRP, sleep_dir,&lpm_proc_lpm_fops);         /* read/write*/
+		ent=proc_create("btwrite", S_IRUGO | S_IWUSR | S_IWGRP, sleep_dir,&lpm_proc_btwrite_fops); /*read/write */
+		if (ent == NULL) {
+		    BT_SLEEP_DBG("Unable to create /proc/%s/btwake entry", PROC_DIR);
+			retval = -ENOMEM;
+		    goto fail;
+			  }
+
+#endif
+
+
+ /* assert bt wake */
+	if (bsi->has_ext_wake == 1)
+    gpio_set_value(bsi->ext_wake, 0);
+	clear_bit(BT_EXT_WAKE, &flags);
+	BT_ERR("a=%d,b=%d\n",bsi->has_ext_wake,bsi->ext_wake);
+	
+#if !BT_BLUEDROID_SUPPORT
+	hci_register_notifier(&hci_event_nblock);
+#endif
+
+        return 0;
+
+fail:
+#if BT_BLUEDROID_SUPPORT
+	remove_proc_entry("btwrite", sleep_dir);
+	remove_proc_entry("lpm", sleep_dir);
+#endif
+	remove_proc_entry("asleep", sleep_dir);
+	remove_proc_entry("proto", sleep_dir);
+	remove_proc_entry("hostwake", sleep_dir);
+	remove_proc_entry("btwake", sleep_dir);
+	remove_proc_entry("sleep", bluetooth_dir);
+	remove_proc_entry("bluetooth", 0);
+	return retval;
+}
+
+/**
+ * Cleans up the module.
+ */
+static void __exit bluesleep_exit(void)
+{
+	if (bsi == NULL)
+		return;
+        /* assert bt wake */
+	if (bsi->has_ext_wake == 1)
+        gpio_set_value(bsi->ext_wake, 0);
+	clear_bit(BT_EXT_WAKE, &flags);
+        if (test_bit(BT_PROTO, &flags)) {
+                if (disable_irq_wake(bsi->host_wake_irq))
+                        BT_SLEEP_DBG("Couldn't disable hostwake IRQ wakeup mode \n");
+                free_irq(bsi->host_wake_irq, NULL);
+                del_timer(&tx_timer);
+                if (test_bit(BT_ASLEEP, &flags))
+                        hsuart_power(1);
+        }
+
+#if !BT_BLUEDROID_SUPPORT
+        hci_unregister_notifier(&hci_event_nblock);
+#endif
+        platform_driver_unregister(&bluesleep_driver);
+#if BT_BLUEDROID_SUPPORT
+        remove_proc_entry("btwrite", sleep_dir);
+	    remove_proc_entry("lpm", sleep_dir);
+#endif
+        remove_proc_entry("asleep", sleep_dir);
+        remove_proc_entry("proto", sleep_dir);
+        remove_proc_entry("hostwake", sleep_dir);
+        remove_proc_entry("btwake", sleep_dir);
+        remove_proc_entry("sleep", bluetooth_dir);
+        remove_proc_entry("bluetooth", 0);
+//	destroy_workqueue(hostwake_work_queue);
+}
+
+module_init(bluesleep_init);
+module_exit(bluesleep_exit);
+
+MODULE_DESCRIPTION("Bluetooth Sleep Mode Driver ver %s " VERSION);
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+