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BT: bt mac write [1/3]

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PD#OTT-1590

Problem:
bt mac write

Solution:
Accept the MAC address from uboot and create nodes

Verify:
Verifying on Public Edition P212

Change-Id: I77ff3543aff937adc07bf3a0933a350c27e9dd20
Signed-off-by: Qiu Zeng <qiu.zeng@amlogic.com>
This commit is contained in:
qiu.zeng
2019-01-09 15:09:05 +08:00
committed by Luke Go
parent f00819eb22
commit a2d893177b
1 changed files with 64 additions and 0 deletions
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64
drivers/amlogic/bluetooth/bt_device.c
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@@ -32,6 +32,7 @@
#include <linux/amlogic/iomap.h>
#include <linux/io.h>
#include <linux/amlogic/bt_device.h>
#include <linux/random.h>
#ifdef CONFIG_AM_WIFI_SD_MMC
#include <linux/amlogic/wifi_dt.h>
#endif
@@ -48,6 +49,48 @@ static struct early_suspend bt_early_suspend;
#define BT_RFKILL "bt_rfkill"
char bt_addr[18] = "";
static struct class *bt_addr_class;
static ssize_t bt_addr_show(struct class *cls,
struct class_attribute *attr, char *_buf)
{
char local_addr[6];
if (!_buf)
return -EINVAL;
if (strlen(bt_addr) == 0) {
local_addr[0] = 0x22;
local_addr[1] = 0x22;
local_addr[2] = prandom_u32();
local_addr[3] = prandom_u32();
local_addr[4] = prandom_u32();
local_addr[5] = prandom_u32();
sprintf(bt_addr, "%02x:%02x:%02x:%02x:%02x:%02x",
local_addr[0], local_addr[1], local_addr[2],
local_addr[3], local_addr[4], local_addr[5]);
}
return sprintf(_buf, "%s\n", bt_addr);
}
static ssize_t bt_addr_store(struct class *cls,
struct class_attribute *attr, const char __user *buf, size_t count)
{
int ret = -EINVAL;
if (!buf)
return ret;
snprintf(bt_addr, sizeof(bt_addr), "%s", buf);
if (bt_addr[strlen(bt_addr)-1] == '\n')
bt_addr[strlen(bt_addr)-1] = '\0';
pr_info("bt_addr=%s\n", bt_addr);
return count;
}
static CLASS_ATTR(value, 0644, bt_addr_show, bt_addr_store);
struct bt_dev_runtime_data {
struct rfkill *bt_rfk;
struct bt_dev_data *pdata;
@@ -310,6 +353,9 @@ static int bt_probe(struct platform_device *pdev)
#else
pdata = (struct bt_dev_data *)(pdev->dev.platform_data);
#endif
bt_addr_class = class_create(THIS_MODULE, "bt_addr");
ret = class_create_file(bt_addr_class, &class_attr_value);
bt_device_init(pdata);
if (pdata->power_down_disable == 1) {
pdata->power_down_disable = 0;
@@ -453,3 +499,21 @@ module_exit(bt_exit);
MODULE_DESCRIPTION("bt rfkill");
MODULE_AUTHOR("");
MODULE_LICENSE("GPL");
/**************** bt mac *****************/
static int __init mac_addr_set(char *line)
{
if (line) {
pr_info("try to read bt mac from emmc key!\n");
strncpy(bt_addr, line, sizeof(bt_addr)-1);
bt_addr[sizeof(bt_addr)-1] = '\0';
}
return 1;
}
__setup("mac_bt=", mac_addr_set);