diff -drupN a/drivers/bluetooth/xradio_btlpm.c b/drivers/bluetooth/xradio_btlpm.c --- a/drivers/bluetooth/xradio_btlpm.c 1970-01-01 03:00:00.000000000 +0300 +++ b/drivers/bluetooth/xradio_btlpm.c 2022-06-12 05:28:14.000000000 +0300 @@ -0,0 +1,870 @@ +/* +** Bluetooth sleep and wakeup host interface for XRADIO Drivers +** +** Copyright (c) 2013, XRadio +** Author: XRadio +** +** 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. +*/ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BT_SLEEP_DEBUG + +#ifdef BT_SLEEP_DEBUG +#define BT_SLEEP_DBG(fmt, arg...) printk(KERN_DEBUG "[XR_BT_LPM] %s: " fmt "\n", __func__, ## arg) +#else +#define BT_SLEEP_DBG(fmt, arg...) +#endif + +#define BT_SLEEP_INF(fmt, arg...) printk(KERN_INFO "[XR_BT_LPM] %s: " fmt "\n", __func__, ## arg) +#define VERSION "01.00.06" +#define PROC_SLEEP_DIR "bluetooth/sleep" +#define PROC_POWER_DIR "bluetooth/power" +#define BT_BLUEDROID_SUPPORT 1 + +#define AW1732_BT 1 +#define XRADIO_ETF_RFKILL 1 + +struct xr_btsleep_info { + unsigned int host_wake; + unsigned int ext_wake; + unsigned int host_wake_irq; + struct wake_lock wake_lock; + struct uart_port *uport; + unsigned int host_wake_polarity:1; + unsigned int bt_wake_polarity:1; +}; + +/* 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) +#define bluesleep_wake_up() schedule_delayed_work(&sleep_workqueue, 0) +#define bluesleep_standby() schedule_delayed_work(&sleep_workqueue, 0) + + + +/* 10 second timeout */ +#define TX_TIMER_INTERVAL 2 //10s + +/* state variable names and bit positions */ +#define BT_PROTO 0x01 +#define BT_TXDATA 0x02 +#define BT_ASLEEP 0x04 + + +/* variable use indicate lpm modle */ +volatile bool has_lpm_enabled; + +/* struct use save platform_device from uart */ +static struct platform_device *bluesleep_uart_dev; +static struct xr_btsleep_info *bsi; + +/* Global state flags */ +static unsigned long flags; + +#ifdef AW1732_BT +/* module usage */ +static atomic_t open_count = ATOMIC_INIT(1); +/* Tasklet to respond to change in hostwake line */ +static struct tasklet_struct hostwake_task; +#endif + +/* Transmission timer */ +static struct timer_list tx_timer; + +/* Lock for state transitions */ +static spinlock_t rw_lock; +static spinlock_t irq_lock; + + +struct proc_dir_entry *bluetooth_dir, *sleep_dir; + +#ifdef XRADIO_ETF_RFKILL +struct proc_dir_entry *power_dir; +volatile char power_state_save; +#endif + +/* + * bt go to sleep will call this function tell uart stop data interactive + */ +static void hsuart_power(int on) +{ + if (bsi->uport == NULL) { + return; + } + if (on) { + bsi->uport->ops->set_mctrl(bsi->uport, TIOCM_RTS); + } else { + bsi->uport->ops->set_mctrl(bsi->uport, 0); + } +} + +/** + * @return 1 if the Host can go to sleep, 0 otherwise. + */ +static inline int bluesleep_can_sleep(void) +{ + /* check if HOST_WAKE_BT_GPIO and BT_WAKE_HOST_GPIO are both deasserted */ + int flag1, flag2; + flag1 = !test_bit(BT_TXDATA, &flags); + flag2 = (bsi->uport != NULL); + BT_SLEEP_DBG(" !BT_TXDATA is %d, bsi->uport is %d", flag1, flag2); + return (flag1 && flag2); +} + +/* + * after bt wakeup should clean BT_ASLEEP flag and start time. + */ +int bluesleep_sleep_wakeup(void) +{ + int poll_count = 0; + BT_SLEEP_DBG("test_bit(BT_ASLEEP, &flags) %d", test_bit(BT_ASLEEP, &flags)); + if (gpio_get_value(bsi->ext_wake) != bsi->bt_wake_polarity || + gpio_get_value(bsi->host_wake) != bsi->host_wake_polarity || + test_bit(BT_ASLEEP, &flags) == 1) { + BT_SLEEP_DBG("waking up..."); + /*Activating UART */ + hsuart_power(1); + gpio_set_value(bsi->ext_wake, bsi->bt_wake_polarity); + //add poll bsi->hostwake + while (poll_count++ < 6) { + mdelay(25); + if (gpio_get_value(bsi->host_wake) == 1) { + BT_SLEEP_DBG("bt device active"); + /*wake up, maybe no data or cmd need send to fw*/ + /*so didn't change TXDATA in here*/ + clear_bit(BT_ASLEEP, &flags); + return 0; + } + } + /* + *add once more wakeup operation when first operation failed, + *because if host wakeup device during device is wakeuped by yourself, + *device maybe couldn't receive wakeup GPIO rise-up signal + */ + poll_count = 0; + while (poll_count++ < 6) { + mdelay(25); + if (gpio_get_value(bsi->host_wake) == 1) { + BT_SLEEP_DBG("bt device active"); + /*wake up, maybe no data or cmd need send to fw*/ + /*so didn't change TXDATA in here*/ + clear_bit(BT_ASLEEP, &flags); + return 0; + } + } + return 1; + } else { + BT_SLEEP_DBG("bluesleep_sleep_wakeup del_timer"); + del_timer(&tx_timer); + return 0; + } + return 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) +{ + if (bluesleep_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..."); + gpio_set_value(bsi->ext_wake, !bsi->bt_wake_polarity); + set_bit(BT_ASLEEP, &flags); + clear_bit(BT_TXDATA, &flags); + /*Deactivating UART */ + hsuart_power(0); + wake_unlock(&bsi->wake_lock); + } + } else { + bluesleep_sleep_wakeup(); + } +} + +#ifdef AW1732_BT +static void bluesleep_hostwake_task(unsigned long data) +{ + BT_SLEEP_DBG("hostwake line change"); + if (!has_lpm_enabled) { + return; + } + spin_lock(&rw_lock); + //wakeup signal from fw + if (test_bit(BT_ASLEEP, &flags) && !test_bit(BT_TXDATA, &flags)) { + clear_bit(BT_ASLEEP, &flags); + mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL * HZ)); + bluesleep_sleep_wakeup(); + } + spin_unlock(&rw_lock); +} +#endif + + +static void bluesleep_outgoing_data(void) +{ + unsigned long irq_flags; + BT_SLEEP_DBG(); + spin_lock_irqsave(&rw_lock, irq_flags); + /* log data passing by */ + set_bit(BT_TXDATA, &flags); + /* if the tx side is sleeping... */ + if (gpio_get_value(bsi->ext_wake) != bsi->bt_wake_polarity || + gpio_get_value(bsi->host_wake) != bsi->host_wake_polarity) { + BT_SLEEP_DBG("tx was sleeping"); + if (bluesleep_sleep_wakeup() == 1) { + BT_SLEEP_DBG("can't wakeup bt device!"); + } + } + spin_unlock_irqrestore(&rw_lock, irq_flags); +} + +static struct uart_port *bluesleep_get_uart_port(void) +{ + struct uart_port *uport = NULL; + BT_INFO("%s enter.", __func__); + if (bluesleep_uart_dev) { + uport = platform_get_drvdata(bluesleep_uart_dev); + BT_INFO("%s get uart_port from blusleep_uart_dev: %s", + __func__, bluesleep_uart_dev->name); + } + return uport; +} + +#ifdef AW1732_BT +static void bluesleep_tx_timer_expire(unsigned long data) +{ + unsigned long irq_flags; + spin_lock_irqsave(&rw_lock, irq_flags); + BT_SLEEP_DBG("Tx timer expired"); + /* were we silent during the last timeout */ + if (!test_bit(BT_ASLEEP, &flags) && !test_bit(BT_TXDATA, &flags)) { + BT_SLEEP_DBG("Tx has been idle"); + bluesleep_tx_idle(); + } else { + BT_SLEEP_DBG("Tx data during last period"); + } + + del_timer(&tx_timer); + /* clear the incoming data flag */ + spin_unlock_irqrestore(&rw_lock, irq_flags); +} + + +static irqreturn_t bluesleep_hostwake_isr(int irq, void *dev_id) +{ + /* schedule a tasklet to handle the change in the host wake line */ + tasklet_schedule(&hostwake_task); + wake_lock(&bsi->wake_lock); + return IRQ_HANDLED; +} + + +static int bluesleep_start(void) +{ + int retval; + unsigned long irq_flags; + + 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; + } + /*wake up bt device ,initial irq service*/ + gpio_set_value(bsi->ext_wake, bsi->bt_wake_polarity); + if (bsi->host_wake_polarity) + retval = request_irq(bsi->host_wake_irq, bluesleep_hostwake_isr, IRQF_NO_SUSPEND | IRQF_TRIGGER_RISING, "bluetooth hostwake", NULL); + else + retval = request_irq(bsi->host_wake_irq, bluesleep_hostwake_isr, IRQF_NO_SUSPEND | IRQF_TRIGGER_FALLING, "bluetooth hostwake", NULL); + + if (retval < 0) { + BT_ERR("Couldn't acquire BT_HOST_WAKE IRQ"); + goto fail; + } + + retval = enable_irq_wake(bsi->host_wake_irq); + if (retval < 0) { + BT_ERR("Couldn't enable BT_HOST_WAKE as wakeup interrupt"); + free_irq(bsi->host_wake_irq, NULL); + goto fail; + } + set_bit(BT_PROTO, &flags); + wake_lock(&bsi->wake_lock); + + return 0; + + +fail: + atomic_inc(&open_count); + return retval; +} + +static void bluesleep_stop(void) +{ + unsigned long irq_flags; + + spin_lock_irqsave(&rw_lock, irq_flags); + + if (!test_bit(BT_PROTO, &flags)) { + spin_unlock_irqrestore(&rw_lock, irq_flags); + return; + } + + clear_bit(BT_PROTO, &flags); + del_timer(&tx_timer); + + if (test_bit(BT_ASLEEP, &flags)) { + clear_bit(BT_ASLEEP, &flags); + hsuart_power(1); + } + + if (test_bit(BT_TXDATA, &flags)) { + clear_bit(BT_TXDATA, &flags); + } + + atomic_inc(&open_count); + spin_unlock_irqrestore(&rw_lock, irq_flags); + if (disable_irq_wake(bsi->host_wake_irq)) + BT_ERR("Couldn't disable hostwake IRQ wakeup mode\n"); + free_irq(bsi->host_wake_irq, NULL); + wake_lock_timeout(&bsi->wake_lock, HZ * 5); +} +#endif + + +#ifdef XRADIO_ETF_RFKILL +extern void sunxi_bluetooth_set_power(bool on_off); + +static int bluetooth_pwr_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "power state: %d\n", power_state_save); + return 0; +} + +static int bluetooth_pwr_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, bluetooth_pwr_proc_show, NULL); +} + +static ssize_t bluetooth_write_proc_pwr(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) +{ + char b; + + if (count < 1) + return -EINVAL; + + if (copy_from_user(&b, buffer, 1)) + return -EFAULT; + + if (b == '0') { + BT_SLEEP_INF("bt power off"); + //sunxi_bluetooth_set_power(false); + power_state_save = 0; + } else { + BT_SLEEP_INF("bt power on"); + //sunxi_bluetooth_set_power(true); + power_state_save = 1; + } + + return count; +} +#endif + +static int bluedroid_lpm_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "lpm enable: %d\n", has_lpm_enabled); + return 0; +} + +static int bluedroid_lpm_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, bluedroid_lpm_proc_show, NULL); +} + +static ssize_t bluedroid_write_proc_lpm(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) + +{ + char b; + + if (count < 1) + return -EINVAL; + + if (copy_from_user(&b, buffer, 1)) + return -EFAULT; + +#ifdef AW1732_BT + if (b == '0') { + BT_SLEEP_DBG("disable lpm mode"); + bluesleep_stop(); + has_lpm_enabled = false; + bsi->uport = NULL; + } else { + BT_SLEEP_DBG("enable lpm mode"); + if (!has_lpm_enabled) { + has_lpm_enabled = true; + if (bluesleep_uart_dev) + bsi->uport = bluesleep_get_uart_port(); + bluesleep_start(); + } + } +#else //work around for aw1722 wakeup bt before brom download + if (b == '0') { //disable lpm mode + BT_SLEEP_DBG("disable lpm mode"); + has_lpm_enabled = false; + } else { //enable lpm mode + BT_SLEEP_DBG("enable lpm mode"); + has_lpm_enabled = true; + if (bluesleep_uart_dev) + bsi->uport = bluesleep_get_uart_port(); + } +#endif + + return count; +} + +static int bluedroid_btwrite_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "it's not support\n"); + return 0; +} + +static int bluedroid_btwrite_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, bluedroid_btwrite_proc_show, NULL); +} + +static ssize_t bluedroid_write_proc_btwrite(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) +{ + char b; + + if (count < 1) + return -EINVAL; + + if (copy_from_user(&b, buffer, 1)) + return -EFAULT; + + BT_SLEEP_DBG("bluedroid_write_proc_btwrite %c", b); + if (b == '1') { + mdelay(10); + set_bit(BT_TXDATA, &flags); + bluesleep_outgoing_data(); + //start the timer when host receive event but reply no data or cmd send to fw + del_timer(&tx_timer); + } else if (b == '0') { + clear_bit(BT_TXDATA, &flags); + bluesleep_tx_idle(); + } + return count; +} + +static int bluedroid_btwake_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "bt wake state:%d\n", gpio_get_value(bsi->ext_wake)); + return 0; +} + +static int bluedroid_btwake_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, bluedroid_btwake_proc_show, NULL); +} + +static ssize_t bluedroid_write_proc_btwake(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) +{ + char *buf; 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; + } + BT_SLEEP_DBG("bluedroid_write_proc_btwake %c", buf[0]); + if (buf[0] == '0') { + BT_SLEEP_DBG("bt sleeping"); + gpio_set_value(bsi->ext_wake, !bsi->bt_wake_polarity); + } else if (buf[0] == '1') { + BT_SLEEP_DBG("wakeup bt device"); + gpio_set_value(bsi->ext_wake, bsi->bt_wake_polarity); + } else if (buf[0] == '2') { + wake_lock(&bsi->wake_lock); + } else if (buf[0] == '3') { + wake_unlock(&bsi->wake_lock); + } else { + kfree(buf); + return -EINVAL; + } + + kfree(buf); + return count; +} + +#ifdef XRADIO_ETF_RFKILL +static const struct file_operations pwr_fops = { + .owner = THIS_MODULE, + .open = bluetooth_pwr_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = bluetooth_write_proc_pwr, +}; +#endif + +static const struct file_operations lpm_fops = { + .owner = THIS_MODULE, + .open = bluedroid_lpm_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = bluedroid_write_proc_lpm, +}; +static const struct file_operations btwrite_fops = { + .owner = THIS_MODULE, + .open = bluedroid_btwrite_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = bluedroid_write_proc_btwrite, +}; +static const struct file_operations btwake_fops = { + .owner = THIS_MODULE, + .open = bluedroid_btwake_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = bluedroid_write_proc_btwake, +}; + +extern struct platform_device *sw_uart_get_pdev(int uart_id); +//extern int enable_gpio_wakeup_src(int para); + +static int bluesleep_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct gpio_config config; + int ret; + u32 val; + + bsi = devm_kzalloc(&pdev->dev, sizeof(struct xr_btsleep_info), GFP_KERNEL); + if (!bsi) + return -ENOMEM; + + //get bt_wake & bt_host_wake from sys_config.fex + bsi->ext_wake = of_get_named_gpio_flags(np, "bt_wake", 0, (enum of_gpio_flags *)&config); + if (!gpio_is_valid(bsi->ext_wake)) { + BT_ERR("get gpio bt_wake failed"); + return -EINVAL; + } + + bsi->bt_wake_polarity = config.data; + BT_SLEEP_DBG("bt_wake polarity: %d", bsi->bt_wake_polarity); + + ret = devm_gpio_request(dev, bsi->ext_wake, "bt_wake"); + if (ret < 0) { + BT_ERR("can't request bt_wake gpio %d", + bsi->ext_wake); + goto free_bsi; + } + ret = gpio_direction_output(bsi->ext_wake, bsi->bt_wake_polarity); + if (ret < 0) { + BT_ERR("can't request output direction bt_wake gpio %d", + bsi->ext_wake); + goto free_bsi; + } + + bsi->host_wake = of_get_named_gpio_flags(np, "bt_hostwake", 0, (enum of_gpio_flags *)&config); + if (!gpio_is_valid(bsi->host_wake)) { + BT_ERR("get gpio bt_hostwake failed"); + return -EINVAL; + } + + bsi->host_wake_polarity = config.data; + BT_SLEEP_DBG("host_wake polarity: %d", bsi->host_wake_polarity); + + ret = devm_gpio_request(dev, bsi->host_wake, "bt_hostwake"); + if (ret < 0) { + BT_ERR("can't request bt_hostwake gpio %d", + bsi->host_wake); + goto free_bsi; + } + ret = gpio_direction_input(bsi->host_wake); + if (ret < 0) { + BT_ERR("can't request input direction bt_wake gpio %d", + bsi->host_wake); + goto free_bsi; + } + ret = device_init_wakeup(dev, 1); + if (ret < 0) { + BT_ERR("device init wakeup failed\n"); + goto free_bsi; + } + ret = dev_pm_set_wake_irq(dev, bsi->host_wake); + if (ret < 0) { + BT_ERR("can't enable wakeup src for bt_hostwake %d\n", + bsi->host_wake); + goto free_bsi; + } + if (!of_property_read_u32(np, "uart_index", &val)) { + BT_SLEEP_DBG("uart_index(%u)", val); + bluesleep_uart_dev = sw_uart_get_pdev(val); + } + + wake_lock_init(&bsi->wake_lock, WAKE_LOCK_SUSPEND, "bluesleep"); + + //1.set bt_wake as output and the level is 0 + gpio_set_value(bsi->ext_wake, 0); + + //2.get bt_host_wake gpio irq +#ifdef AW1732_BT + bsi->host_wake_irq = gpio_to_irq(bsi->host_wake); + if (IS_ERR_VALUE(bsi->host_wake_irq)) { + BT_ERR("map gpio [%d] to virq failed, errno = %d\n", bsi->host_wake, bsi->host_wake_irq); + ret = -ENODEV; + goto free_bt_ext_wake; + } +#endif + + return 0; + +#ifdef AW1732_BT +free_bt_ext_wake: + gpio_free(bsi->ext_wake); + gpio_free(bsi->host_wake); +#endif +free_bsi: + kfree(bsi); + return ret; +} + +static int bluesleep_remove(struct platform_device *pdev) +{ + BT_SLEEP_DBG(); + /* assert bt wake */ + gpio_set_value(bsi->ext_wake, bsi->bt_wake_polarity); + if (test_bit(BT_PROTO, &flags)) { +#ifdef AW1732_BT + free_irq(bsi->host_wake_irq, NULL); +#endif + del_timer(&tx_timer); + if (test_bit(BT_ASLEEP, &flags)) + hsuart_power(1); + } + gpio_free(bsi->host_wake); + gpio_free(bsi->ext_wake); + wake_lock_destroy(&bsi->wake_lock); + return 0; +} + +static int bluesleep_resume(struct platform_device *pdev) +{ + BT_SLEEP_DBG(); + if (!has_lpm_enabled) { + return 0; + } +#if 0 //fix bug for always wakeup + if (test_bit(BT_ASLEEP, &flags)) { + mod_timer(&tx_timer, jiffies + (TX_TIMER_INTERVAL*HZ)); + } + bluesleep_sleep_wakeup(); +#endif + return 0; +} + +static int bluesleep_suspend(struct platform_device *pdev, pm_message_t state) +{ + BT_SLEEP_DBG(); + if (!has_lpm_enabled) { + return 0; + } + /*TXing DATA,if suspend will cause a error*/ + if (test_bit(BT_TXDATA, &flags)) { + return -EBUSY; + } + del_timer(&tx_timer); + bluesleep_standby(); + return 0; +} + + +static const struct of_device_id sunxi_btlpm_ids[] = { + { .compatible = "allwinner,sunxi-btlpm" }, + { /* Sentinel */ } +}; + +static struct platform_driver bluesleep_driver = { + .probe = bluesleep_probe, + .remove = bluesleep_remove, + .suspend = bluesleep_suspend, + .resume = bluesleep_resume, + .driver = { + .owner = THIS_MODULE, + .name = "sunxi-btlpm", + .of_match_table = sunxi_btlpm_ids, + }, +}; + +static int __init btsleep_init(void) +{ + int retval; + struct proc_dir_entry *ent; + + BT_INFO("XRadio Bluetooth LPM Mode Driver Ver %s", VERSION); + + retval = platform_driver_probe(&bluesleep_driver, bluesleep_probe); + if (retval) + goto fail; + + bluetooth_dir = proc_mkdir("bluetooth", NULL); + if (bluetooth_dir == NULL) { + BT_ERR("Unable to create /proc/bluetooth directory"); + goto unreg_drv; + } + sleep_dir = proc_mkdir("sleep", bluetooth_dir); + if (sleep_dir == NULL) { + BT_ERR("Unable to create /proc/%s directory", PROC_SLEEP_DIR); + goto rm_bt_dir; + } + +#ifdef XRADIO_ETF_RFKILL + power_dir = proc_mkdir("power", bluetooth_dir); + if (power_dir == NULL) { + BT_ERR("Unable to create /proc/%s directory", PROC_POWER_DIR); + goto rm_bt_dir; + } + /* read/write proc entries */ + ent = proc_create("state", 0220, power_dir, &pwr_fops); + if (ent == NULL) { + BT_ERR("Unable to create /proc/%s/state entry", PROC_POWER_DIR); + retval = -ENOMEM; + goto rm_power_dir; + } +#endif + + /* read/write proc entries */ + ent = proc_create("lpm", 0220, sleep_dir, &lpm_fops); + if (ent == NULL) { + BT_ERR("Unable to create /proc/%s/lpm entry", PROC_SLEEP_DIR); + retval = -ENOMEM; + goto rm_sleep_dir; + } + ent = proc_create("btwrite", 0220, sleep_dir, &btwrite_fops); + if (ent == NULL) { + BT_ERR("Unable to create /proc/%s/btwrite entry", PROC_SLEEP_DIR); + retval = -ENOMEM; + goto rm_btwrite_dir; + } + ent = proc_create("btwake", 0220, sleep_dir, &btwake_fops); + if (ent == NULL) { + BT_ERR("Unable to create /proc/%s/btwrite entry", PROC_SLEEP_DIR); + retval = -ENOMEM; + goto rm_btwake_dir; + } + +#ifdef AW1732_BT + flags = 0; + /* Initialize spinlock. */ + spin_lock_init(&rw_lock); + spin_lock_init(&irq_lock); + /* Initialize timer */ + init_timer(&tx_timer); + tx_timer.function = bluesleep_tx_timer_expire; + tx_timer.data = 0; + /* initialize host wake tasklet */ + tasklet_init(&hostwake_task, bluesleep_hostwake_task, 0); +#endif + + return 0; + +rm_btwake_dir: + remove_proc_entry("btwake", sleep_dir); +rm_btwrite_dir: + remove_proc_entry("btwrite", sleep_dir); +rm_sleep_dir: + remove_proc_entry("sleep", bluetooth_dir); +#ifdef XRADIO_ETF_RFKILL +rm_power_dir: + remove_proc_entry("state", power_dir); +#endif +rm_bt_dir: + remove_proc_entry("bluetooth", 0); +unreg_drv: + platform_driver_unregister(&bluesleep_driver); +fail: + return retval; +} + +static void __exit btsleep_exit(void) +{ + platform_driver_unregister(&bluesleep_driver); + + remove_proc_entry("btwake", sleep_dir); + remove_proc_entry("btwrite", sleep_dir); + remove_proc_entry("lpm", sleep_dir); + remove_proc_entry("sleep", bluetooth_dir); +#ifdef XRADIO_ETF_RFKILL + remove_proc_entry("state", power_dir); + remove_proc_entry("power", bluetooth_dir); +#endif + remove_proc_entry("bluetooth", 0); +} + +module_init(btsleep_init); +module_exit(btsleep_exit); +MODULE_AUTHOR("XRadioTech"); +MODULE_DESCRIPTION("Bluetooth Sleep Mode Driver ver. %s" VERSION); +MODULE_LICENSE("GPL");