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449e79c8d19561153adde5cb68119a41faffdf75
SDK_RK3288/kernel/net/rfkill/rfkill-bt.c
cjp 449e79c8d1 Kernel->net:add AP6212 support
2016-08-23 10:20:04 +08:00

759 lines
20 KiB
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/*
* Copyright (C) 2012 ROCKCHIP, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
/* Rock-chips rfkill driver for bluetooth
*
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/rfkill.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/rfkill-bt.h>
#include <linux/rfkill-wlan.h>
#include <linux/wakelock.h>
#include <linux/interrupt.h>
#include <asm/irq.h>
#include <linux/suspend.h>
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
#include <linux/gpio.h>
#include <linux/fs.h>
#include <dt-bindings/gpio/gpio.h>
#include <uapi/linux/rfkill.h>
#ifdef CONFIG_OF
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#endif
#if 0
#define DBG(x...) printk(KERN_INFO "[BT_RFKILL]: "x)
#else
#define DBG(x...)
#endif
#define LOG(x...) printk(KERN_INFO "[BT_RFKILL]: "x)
#define BT_WAKEUP_TIMEOUT 10000
#define BT_IRQ_WAKELOCK_TIMEOUT 10*1000
#define BT_BLOCKED true
#define BT_UNBLOCK false
#define BT_SLEEP true
#define BT_WAKEUP false
enum {
IOMUX_FNORMAL=0,
IOMUX_FGPIO,
IOMUX_FMUX,
};
struct rfkill_rk_data {
struct rfkill_rk_platform_data *pdata;
struct platform_device *pdev;
struct rfkill *rfkill_dev;
struct wake_lock bt_irq_wl;
struct delayed_work bt_sleep_delay_work;
};
static struct rfkill_rk_data *g_rfkill = NULL;
static const char bt_name[] =
#if defined (CONFIG_BCM4330)
#if defined (CONFIG_BT_MODULE_NH660)
"nh660"
#else
"bcm4330"
#endif
#elif defined (CONFIG_RK903)
#if defined(CONFIG_RKWIFI_26M)
"rk903_26M"
#else
"rk903"
#endif
#elif defined(CONFIG_BCM4329)
"bcm4329"
#elif defined(CONFIG_MV8787)
"mv8787"
#elif defined(CONFIG_AP6210)
#if defined(CONFIG_RKWIFI_26M)
"ap6210"
#else
"ap6210_24M"
#endif
#elif defined(CONFIG_AP6212)
"ap6212"
#elif defined(CONFIG_AP6330)
"ap6330"
#elif defined(CONFIG_AP6476)
"ap6476"
#elif defined(CONFIG_AP6493)
"ap6493"
#elif defined(CONFIG_AP6441)
"ap6441"
#elif defined(CONFIG_AP6335)
"ap6335"
#elif defined(CONFIG_GB86302I)
"gb86302i"
#else
"bt_default"
#endif
;
static irqreturn_t rfkill_rk_wake_host_irq(int irq, void *dev)
{
struct rfkill_rk_data *rfkill = dev;
LOG("BT_WAKE_HOST IRQ fired\n");
DBG("BT IRQ wakeup, request %dms wakelock\n", BT_IRQ_WAKELOCK_TIMEOUT);
wake_lock_timeout(&rfkill->bt_irq_wl,
msecs_to_jiffies(BT_IRQ_WAKELOCK_TIMEOUT));
return IRQ_HANDLED;
}
static int rfkill_rk_setup_gpio(struct platform_device *pdev, struct rfkill_rk_gpio* gpio,
const char* prefix, const char* name)
{
if (gpio_is_valid(gpio->io)) {
int ret=0;
sprintf(gpio->name, "%s_%s", prefix, name);
ret = devm_gpio_request(&pdev->dev, gpio->io, gpio->name);
if (ret) {
LOG("Failed to get %s gpio.\n", gpio->name);
return -1;
}
}
return 0;
}
static int rfkill_rk_setup_wake_irq(struct rfkill_rk_data* rfkill)
{
int ret=0;
struct rfkill_rk_irq* irq = &(rfkill->pdata->wake_host_irq);
ret = rfkill_rk_setup_gpio(rfkill->pdev, &irq->gpio, rfkill->pdata->name, "wake_host");
if (ret) goto fail1;
if (gpio_is_valid(irq->gpio.io))
{
//ret = gpio_pull_updown(irq->gpio.io, (irq->gpio.enable==GPIO_ACTIVE_LOW)?GPIOPullUp:GPIOPullDown);
//if (ret) goto fail2;
LOG("Request irq for bt wakeup host\n");
irq->irq = gpio_to_irq(irq->gpio.io);
sprintf(irq->name, "%s_irq", irq->gpio.name);
ret = request_irq(irq->irq,
rfkill_rk_wake_host_irq,
(irq->gpio.enable==GPIO_ACTIVE_LOW)?IRQF_TRIGGER_FALLING:IRQF_TRIGGER_RISING,
irq->name,
rfkill);
if (ret) goto fail2;
LOG("** disable irq\n");
disable_irq(irq->irq);
ret = enable_irq_wake(irq->irq);
if (ret) goto fail3;
}
return ret;
fail3:
free_irq(irq->gpio.io, rfkill);
fail2:
gpio_free(irq->gpio.io);
fail1:
return ret;
}
static inline void rfkill_rk_sleep_bt_internal(struct rfkill_rk_data *rfkill, bool sleep)
{
struct rfkill_rk_gpio *wake = &rfkill->pdata->wake_gpio;
DBG("*** bt sleep: %d ***\n", sleep);
#ifndef CONFIG_BK3515A_COMBO
gpio_direction_output(wake->io, sleep?!wake->enable:wake->enable);
#else
if(!sleep)
{
DBG("HOST_UART0_TX pull down 10us\n");
if (rfkill_rk_setup_gpio(rfkill->pdev, wake, rfkill->pdata->name, "wake") != 0) {
return;
}
gpio_direction_output(wake->io, wake->enable);
udelay(10);
gpio_direction_output(wake->io, !wake->enable);
gpio_free(wake->io);
}
#endif
}
static void rfkill_rk_delay_sleep_bt(struct work_struct *work)
{
struct rfkill_rk_data *rfkill = NULL;
DBG("Enter %s\n",__FUNCTION__);
rfkill = container_of(work, struct rfkill_rk_data, bt_sleep_delay_work.work);
rfkill_rk_sleep_bt_internal(rfkill, BT_SLEEP);
}
void rfkill_rk_sleep_bt(bool sleep)
{
struct rfkill_rk_data *rfkill = g_rfkill;
struct rfkill_rk_gpio *wake;
bool ret;
DBG("Enter %s\n",__FUNCTION__);
if (rfkill==NULL)
{
LOG("*** RFKILL is empty???\n");
return;
}
wake = &rfkill->pdata->wake_gpio;
if (!gpio_is_valid(wake->io))
{
DBG("*** Not support bt wakeup and sleep\n");
return;
}
ret = cancel_delayed_work_sync(&rfkill->bt_sleep_delay_work);
rfkill_rk_sleep_bt_internal(rfkill, sleep);
#ifdef CONFIG_BT_AUTOSLEEP
if (sleep==BT_WAKEUP)
{
schedule_delayed_work(&rfkill->bt_sleep_delay_work,
msecs_to_jiffies(BT_WAKEUP_TIMEOUT));
}
#endif
}
EXPORT_SYMBOL(rfkill_rk_sleep_bt);
static int bt_power_state = 0;
int rfkill_get_bt_power_state(int *power, bool *toggle)
{
struct rfkill_rk_data *mrfkill = g_rfkill;
if (mrfkill == NULL) {
LOG("%s: rfkill-bt driver has not Successful initialized\n", __func__);
return -1;
}
*toggle = mrfkill->pdata->power_toggle;
*power = bt_power_state;
return 0;
}
static int rfkill_rk_set_power(void *data, bool blocked)
{
struct rfkill_rk_data *rfkill = data;
struct rfkill_rk_gpio *poweron = &rfkill->pdata->poweron_gpio;
struct rfkill_rk_gpio *reset = &rfkill->pdata->reset_gpio;
#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335) || defined(CONFIG_AP6212)
struct rfkill_rk_gpio* rts = &rfkill->pdata->rts_gpio;
struct pinctrl *pinctrl = rfkill->pdata->pinctrl;
#endif
int power = 0, vref_ctrl_enable = 0;
bool toggle = false;
DBG("Enter %s\n", __func__);
DBG("Set blocked:%d\n", blocked);
toggle = rfkill->pdata->power_toggle;
if (!rfkill_get_wifi_power_state(&power, &vref_ctrl_enable)) {
if (true == toggle && 1 == power) {
LOG("%s: bt shouldn't control the power, it was enabled by wifi!\n", __func__);
return 0;
}
} else {
LOG("%s: cannot get wifi power state!\n", __func__);
return -1;
}
if (false == blocked) {
if (1 == vref_ctrl_enable && 0 == power)
rockchip_wifi_ref_voltage(1);
rfkill_rk_sleep_bt(BT_WAKEUP); // ensure bt is wakeup
if (gpio_is_valid(poweron->io))
{
gpio_direction_output(poweron->io, !poweron->enable);
msleep(20);
gpio_direction_output(poweron->io, poweron->enable);
msleep(20);
}
if (gpio_is_valid(reset->io))
{
gpio_direction_output(reset->io, !reset->enable);
msleep(20);
gpio_direction_output(reset->io, reset->enable);
}
#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335) || defined(CONFIG_AP6212)
if (pinctrl != NULL && gpio_is_valid(rts->io))
{
pinctrl_select_state(pinctrl, rts->gpio_state);
LOG("ENABLE UART_RTS\n");
gpio_direction_output(rts->io, rts->enable);
msleep(100);
LOG("DISABLE UART_RTS\n");
gpio_direction_output(rts->io, !rts->enable);
pinctrl_select_state(pinctrl, rts->default_state);
}
#endif
bt_power_state = 1;
LOG("bt turn on power\n");
} else {
if (gpio_is_valid(poweron->io))
{
gpio_direction_output(poweron->io, !poweron->enable);
msleep(20);
}
bt_power_state = 0;
LOG("bt shut off power\n");
if (gpio_is_valid(reset->io))
{
gpio_direction_output(reset->io, !reset->enable);/* bt reset active*/
msleep(20);
}
if (1 == vref_ctrl_enable && 0 == power)
rockchip_wifi_ref_voltage(0);
}
return 0;
}
static int rfkill_rk_pm_prepare(struct device *dev)
{
struct rfkill_rk_data *rfkill = g_rfkill;
struct rfkill_rk_gpio* rts;
struct rfkill_rk_irq* wake_host_irq;
struct pinctrl *pinctrl = rfkill->pdata->pinctrl;
DBG("Enter %s\n",__FUNCTION__);
if (!rfkill)
return 0;
rts = &rfkill->pdata->rts_gpio;
wake_host_irq = &rfkill->pdata->wake_host_irq;
//To prevent uart to receive bt data when suspended
if (pinctrl != NULL && gpio_is_valid(rts->io))
{
DBG("Disable UART_RTS\n");
pinctrl_select_state(pinctrl, rts->gpio_state);
gpio_direction_output(rts->io, !rts->enable);
}
#ifdef CONFIG_BT_AUTOSLEEP
rfkill_rk_sleep_bt(BT_SLEEP);
#endif
// enable bt wakeup host
if (gpio_is_valid(wake_host_irq->gpio.io))
{
DBG("enable irq for bt wakeup host\n");
enable_irq(wake_host_irq->irq);
}
#ifdef CONFIG_RFKILL_RESET
rfkill_set_states(rfkill->rfkill_dev, BT_BLOCKED, false);
rfkill_rk_set_power(rfkill, BT_BLOCKED);
#endif
return 0;
}
static void rfkill_rk_pm_complete(struct device *dev)
{
struct rfkill_rk_data *rfkill = g_rfkill;
struct rfkill_rk_irq* wake_host_irq;
struct rfkill_rk_gpio* rts;
struct pinctrl *pinctrl = rfkill->pdata->pinctrl;
DBG("Enter %s\n",__FUNCTION__);
if (!rfkill)
return;
wake_host_irq = &rfkill->pdata->wake_host_irq;
rts = &rfkill->pdata->rts_gpio;
if (gpio_is_valid(wake_host_irq->gpio.io))
{
LOG("** disable irq\n");
disable_irq(wake_host_irq->irq);
}
if (pinctrl != NULL && gpio_is_valid(rts->io))
{
DBG("Enable UART_RTS\n");
gpio_direction_output(rts->io, rts->enable);
pinctrl_select_state(pinctrl, rts->default_state);
}
}
static const struct rfkill_ops rfkill_rk_ops = {
.set_block = rfkill_rk_set_power,
};
#define PROC_DIR "bluetooth/sleep"
static struct proc_dir_entry *bluetooth_dir, *sleep_dir;
static ssize_t bluesleep_read_proc_lpm(struct file *file, char __user *buffer,
size_t count, loff_t *data)
{
return sprintf(buffer, "unsupported to read\n");
}
static ssize_t bluesleep_write_proc_lpm(struct file *file,
const char __user *buffer,
size_t count, loff_t *data)
{
return count;
}
static ssize_t bluesleep_read_proc_btwrite(struct file *file,
char __user *buffer,
size_t count, loff_t *data)
{
return sprintf(buffer, "unsupported to read\n");
}
static ssize_t bluesleep_write_proc_btwrite(struct file *file,
const char __user *buffer,
size_t count, loff_t *data)
{
char b;
if (count < 1)
return -EINVAL;
if (copy_from_user(&b, buffer, 1))
return -EFAULT;
DBG("btwrite %c\n", b);
/* HCI_DEV_WRITE */
if (b != '0') {
rfkill_rk_sleep_bt(BT_WAKEUP);
}
return count;
}
#ifdef CONFIG_OF
static int bluetooth_platdata_parse_dt(struct device *dev,
struct rfkill_rk_platform_data *data)
{
struct device_node *node = dev->of_node;
int gpio;
enum of_gpio_flags flags;
if (!node)
return -ENODEV;
memset(data, 0, sizeof(*data));
if (of_find_property(node, "wifi-bt-power-toggle", NULL)) {
data->power_toggle = true;
LOG("%s: get property wifi-bt-power-toggle.\n", __func__);
} else {
data->power_toggle = false;
}
gpio = of_get_named_gpio_flags(node, "uart_rts_gpios", 0, &flags);
if (gpio_is_valid(gpio)) {
data->rts_gpio.io = gpio;
data->rts_gpio.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
LOG("%s: get property: uart_rts_gpios = %d.\n", __func__, gpio);
data->pinctrl = devm_pinctrl_get(dev);
if (!IS_ERR(data->pinctrl)) {
data->rts_gpio.default_state = pinctrl_lookup_state(data->pinctrl, "default");
data->rts_gpio.gpio_state = pinctrl_lookup_state(data->pinctrl, "rts_gpio");
} else {
data->pinctrl = NULL;
LOG("%s: dts does't define the uart rts iomux.\n", __func__);
return -EINVAL;
}
} else {
data->pinctrl = NULL;
LOG("%s: uart_rts_gpios is unvalid.\n", __func__);
return -EINVAL;
}
gpio = of_get_named_gpio_flags(node, "BT,power_gpio", 0, &flags);
if (gpio_is_valid(gpio)){
data->poweron_gpio.io = gpio;
data->poweron_gpio.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
LOG("%s: get property: BT,power_gpio = %d.\n", __func__, gpio);
} else data->poweron_gpio.io = -1;
gpio = of_get_named_gpio_flags(node, "BT,reset_gpio", 0, &flags);
if (gpio_is_valid(gpio)){
data->reset_gpio.io = gpio;
data->reset_gpio.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
LOG("%s: get property: BT,reset_gpio = %d.\n", __func__, gpio);
} else data->reset_gpio.io = -1;
gpio = of_get_named_gpio_flags(node, "BT,wake_gpio", 0, &flags);
if (gpio_is_valid(gpio)){
data->wake_gpio.io = gpio;
data->wake_gpio.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
LOG("%s: get property: BT,wake_gpio = %d.\n", __func__, gpio);
} else data->wake_gpio.io = -1;
gpio = of_get_named_gpio_flags(node, "BT,wake_host_irq", 0, &flags);
if (gpio_is_valid(gpio)) {
data->wake_host_irq.gpio.io = gpio;
data->wake_host_irq.gpio.enable = flags;
LOG("%s: get property: BT,wake_host_irq = %d.\n", __func__, gpio);
} else data->wake_host_irq.gpio.io = -1;
return 0;
}
#endif //CONFIG_OF
static const struct file_operations bluesleep_lpm = {
.owner = THIS_MODULE,
.read = bluesleep_read_proc_lpm,
.write = bluesleep_write_proc_lpm,
};
static const struct file_operations bluesleep_btwrite = {
.owner = THIS_MODULE,
.read = bluesleep_read_proc_btwrite,
.write = bluesleep_write_proc_btwrite,
};
static int rfkill_rk_probe(struct platform_device *pdev)
{
struct rfkill_rk_data *rfkill;
struct rfkill_rk_platform_data *pdata = pdev->dev.platform_data;
int ret = 0;
struct proc_dir_entry *ent;
DBG("Enter %s\n", __func__);
if (!pdata) {
#ifdef CONFIG_OF
pdata = devm_kzalloc(&pdev->dev, sizeof(struct rfkill_rk_platform_data), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
ret = bluetooth_platdata_parse_dt(&pdev->dev, pdata);
if (ret < 0) {
#endif
LOG("%s: No platform data specified\n", __func__);
return ret;
#ifdef CONFIG_OF
}
#endif
}
pdata->name = (char*)bt_name;
pdata->type = RFKILL_TYPE_BLUETOOTH;
rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL);
if (!rfkill) {
kfree(pdata);
return -ENOMEM;
}
rfkill->pdata = pdata;
rfkill->pdev = pdev;
g_rfkill = rfkill;
bluetooth_dir = proc_mkdir("bluetooth", NULL);
if (bluetooth_dir == NULL) {
LOG("Unable to create /proc/bluetooth directory");
return -ENOMEM;
}
sleep_dir = proc_mkdir("sleep", bluetooth_dir);
if (sleep_dir == NULL) {
LOG("Unable to create /proc/%s directory", PROC_DIR);
return -ENOMEM;
}
/* read/write proc entries */
ent = proc_create("lpm", 0, sleep_dir, &bluesleep_lpm);
if (ent == NULL) {
LOG("Unable to create /proc/%s/lpm entry", PROC_DIR);
ret = -ENOMEM;
goto fail_alloc;
}
/* read/write proc entries */
ent = proc_create("btwrite", 0, sleep_dir, &bluesleep_btwrite);
if (ent == NULL) {
LOG("Unable to create /proc/%s/btwrite entry", PROC_DIR);
ret = -ENOMEM;
goto fail_alloc;
}
DBG("init gpio\n");
ret = rfkill_rk_setup_gpio(pdev, &pdata->poweron_gpio, pdata->name, "poweron");
if (ret) goto fail_gpio;
ret = rfkill_rk_setup_gpio(pdev, &pdata->reset_gpio, pdata->name, "reset");
if (ret) goto fail_gpio;
ret = rfkill_rk_setup_gpio(pdev, &pdata->wake_gpio, pdata->name, "wake");
if (ret) goto fail_gpio;
ret = rfkill_rk_setup_gpio(pdev, &pdata->rts_gpio, rfkill->pdata->name, "rts");
if (ret) goto fail_gpio;
wake_lock_init(&(rfkill->bt_irq_wl), WAKE_LOCK_SUSPEND, "rfkill_rk_irq_wl");
ret = rfkill_rk_setup_wake_irq(rfkill);
if (ret) goto fail_gpio;
DBG("setup rfkill\n");
rfkill->rfkill_dev = rfkill_alloc(pdata->name, &pdev->dev, pdata->type,
&rfkill_rk_ops, rfkill);
if (!rfkill->rfkill_dev)
goto fail_alloc;
rfkill_set_states(rfkill->rfkill_dev, BT_BLOCKED, false);
ret = rfkill_register(rfkill->rfkill_dev);
if (ret < 0)
goto fail_rfkill;
INIT_DELAYED_WORK(&rfkill->bt_sleep_delay_work, rfkill_rk_delay_sleep_bt);
//rfkill_rk_set_power(rfkill, BT_BLOCKED);
// bt turn off power
if (gpio_is_valid(pdata->poweron_gpio.io))
{
gpio_direction_output(pdata->poweron_gpio.io, !pdata->poweron_gpio.enable);
}
if (gpio_is_valid(pdata->reset_gpio.io))
{
gpio_direction_output(pdata->reset_gpio.io, !pdata->reset_gpio.enable);
}
platform_set_drvdata(pdev, rfkill);
LOG("%s device registered.\n", pdata->name);
return 0;
fail_rfkill:
rfkill_destroy(rfkill->rfkill_dev);
fail_alloc:
remove_proc_entry("btwrite", sleep_dir);
remove_proc_entry("lpm", sleep_dir);
fail_gpio:
g_rfkill = NULL;
return ret;
}
static int rfkill_rk_remove(struct platform_device *pdev)
{
struct rfkill_rk_data *rfkill = platform_get_drvdata(pdev);
LOG("Enter %s\n", __func__);
rfkill_unregister(rfkill->rfkill_dev);
rfkill_destroy(rfkill->rfkill_dev);
cancel_delayed_work_sync(&rfkill->bt_sleep_delay_work);
// free gpio
if (gpio_is_valid(rfkill->pdata->rts_gpio.io))
gpio_free(rfkill->pdata->rts_gpio.io);
if (gpio_is_valid(rfkill->pdata->wake_host_irq.gpio.io)){
free_irq(rfkill->pdata->wake_host_irq.irq, rfkill);
#ifndef CONFIG_BK3515A_COMBO
gpio_free(rfkill->pdata->wake_host_irq.gpio.io);
#endif
}
#ifndef CONFIG_BK3515A_COMBO
if (gpio_is_valid(rfkill->pdata->wake_gpio.io))
gpio_free(rfkill->pdata->wake_gpio.io);
#endif
if (gpio_is_valid(rfkill->pdata->reset_gpio.io))
gpio_free(rfkill->pdata->reset_gpio.io);
if (gpio_is_valid(rfkill->pdata->poweron_gpio.io))
gpio_free(rfkill->pdata->poweron_gpio.io);
kfree(rfkill);
g_rfkill = NULL;
return 0;
}
static const struct dev_pm_ops rfkill_rk_pm_ops = {
.prepare = rfkill_rk_pm_prepare,
.complete = rfkill_rk_pm_complete,
};
#ifdef CONFIG_OF
static struct of_device_id bt_platdata_of_match[] = {
{ .compatible = "bluetooth-platdata" },
{ }
};
MODULE_DEVICE_TABLE(of, bt_platdata_of_match);
#endif //CONFIG_OF
static struct platform_driver rfkill_rk_driver = {
.probe = rfkill_rk_probe,
.remove = rfkill_rk_remove,
.driver = {
.name = "rfkill_bt",
.owner = THIS_MODULE,
.pm = &rfkill_rk_pm_ops,
.of_match_table = of_match_ptr(bt_platdata_of_match),
},
};
static int __init rfkill_rk_init(void)
{
LOG("Enter %s\n", __func__);
return platform_driver_register(&rfkill_rk_driver);
}
static void __exit rfkill_rk_exit(void)
{
LOG("Enter %s\n", __func__);
platform_driver_unregister(&rfkill_rk_driver);
}
module_init(rfkill_rk_init);
module_exit(rfkill_rk_exit);
MODULE_DESCRIPTION("rock-chips rfkill for Bluetooth v0.3");
MODULE_AUTHOR("cmy@rock-chips.com, gwl@rock-chips.com");
MODULE_LICENSE("GPL");
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