---

1、获取rtl8723驱动源码

源码上传到了码云：源码获取地址

2、源码结构

3、修改源码支持linux5.4

需要修改文件

rtl8821cu/os_dep/os_intfs.c

--- a/rtl8821cu/os_dep/os_intfs.c
+++ b/rtl8821cu/os_dep/os_intfs.c
@@ -28,6 +28,8 @@ MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Realtek Wireless Lan Driver");
 MODULE_AUTHOR("Realtek Semiconductor Corp.");
 MODULE_VERSION(DRIVERVERSION);
+++MODULE_IMPORT_NS(VFS_internal_I_am_really_a_filesystem_and_am_NOT_a_driver);

需要修改文件

rtl8821cu/os_dep/rtw_cfgvendor.c

--- a/rtl8821cu/os_dep/rtw_cfgvendor.c
+++ b/rtl8821cu/os_dep/rtw_cfgvendor.c
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0))
        .policy = VENDOR_CMD_RAW_DATA,
++++        .maxattr = 1
#endif

4、配置内核支持蓝牙

将以上宏选中

linux@ubuntu:~/tina-d1-open$ make kernel_menuconfig

5、交叉编译

make ARCH=riscv CROSS_COMPILE=交叉编译工具链 KSRC=/内核目录绝对路径

make ARCH=riscv CROSS_COMPILE=/home/linux/tina-d1-open/prebuilt/gcc/linux-x86/riscv/toolchain-thead-glibc/riscv64-glibc-gcc-thead_20200702/bin/riscv64-unknown-linux-gnu- KSRC=/home/linux/tina-d1-open/lichee/linux-5.4

6、 编译成功后，获得8723du.ko驱动

复制到开发板后 insmod