RTL8822CS驱动移植

下载驱动源码

https://gitee.com/xiaolinenet/linux-rtl8822cs-wifi

将下载的驱动源码复制到linux-5.10/drivers/net/wireless/rockchip_wlan/rtl8822cs/

驱动源码修改

CONFIG_PLATFORM_I386_PC = n
CONFIG_PLATFORM_ARM_RK3188 = y

EXTRA_CFLAGS += -I$(srctree)/$(src)/include
EXTRA_CFLAGS += -I$(srctree)/$(src)/hal/phydm
EXTRA_CFLAGS += -I$(srctree)/$(src)/hal/btc
EXTRA_CFLAGS += -I$(srctree)/$(src)/platform
EXTRA_CFLAGS += -Os

Makefile添加以上内容，否则编译头文件缺少报错会改到怀疑人生…

在上层Kconfig添加项linux-5.10/drivers/net/wireless/rockchip_wlan/Kconfig

source "drivers/net/wireless/rockchip_wlan/rtl8822cs/Kconfig"

在上层Makefile添加编译linux-5.10/drivers/net/wireless/rockchip_wlan/Makefile

obj-$(CONFIG_RTL8822CS)  += rtl8822cs/

编译报错修改

• #include<linux/wlan_plat.h>找不到，下载源码，放入同级目录，修改头文件引用< >为" "
  wlan_plat.h文件

• delay_ms(10);函数找不到，注释掉

• 报错dhd_gpio(ld.lld:error:undefined symbol:dhd_wlan_mem_prealloc)，在linux-5.10/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/Makefile打开CONFIG_BCMDHD_STATIC_BUF_IN_DHD := y

烧录验证

注意事项

修改设备树sdio，注释如下内容，否则sdio设备注册不上

总结

• 设备树(引脚配置)：MHBase-4.1-3588/src/out/kernel/src_tmp/linux-5.10/net/rfkill/rfkill-wlan.c
• 模块驱动：MHBase-4.1-3588/src/out/kernel/src_tmp/linux-5.10/drivers/net/wireless/rockchip_wlan/8822cs（xxx.bin）
• wifi协议：MHBase-4.1-3588/src/out/kernel/src_tmp/linux-5.10/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd

参考链接

https://m.elecfans.com/article/2123761.html
https://www.artinchip.com/knowledge/oxy_ex-1/topics/wifi-rtl8821cs-luban.html
https://blog.youkuaiyun.com/weixin_43982460/article/details/116009321