rk3288 usb无线网卡支持 8188eu

第一部分是kernel

内核配置参考rk文档，把device driver 下wireless相关的先勾选上。

编译到buildin有问题，识别不到，所以打算编译成ko

cd  kernel/drivers/net/wireless/rockchip_wlan/rtl8188eu

make -C /home/lzm/workspace/rk3288/zy_n10/kernel/  M=`pwd` modules

得到8188eu.ko

lsusb，看vid pid，是存在的

看初始化函数，发现被注释，修改打开

第二部分，android打开Settings配置

commit e0394d5bb67a76fedbbbdca3f9cba39fbdd9c576
Author: songyoulin <songyoulin@star-net.cn>
Date:   Tue Oct 17 16:25:15 2017 +0800

    provide EthernetSettings interface

packages/apps/Settings/AndroidManifest.xml                            | 9 ++++-----
  packages/apps/Settings/src/com/android/settings/Settings.java         | 1 +
  packages/apps/Settings/src/com/android/settings/SettingsActivity.java | 1 +

commit 17dad10a1276a568e2952741a9a188d0bd6ced19
Author: youchangning <youchangning@star-net.cn>
Date:   Tue Nov 15 09:35:39 2016 +0800

    hide settings

device/rockchip/rk3288/system.prop                                    |  2 +-
  packages/apps/Settings/src/com/android/settings/SettingsActivity.java | 16 ++++++++++++++++

--- a/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
+++ b/packages/apps/Settings/src/com/android/settings/SettingsActivity.java
@@ -1224,6 +1224,10 @@ public class SettingsActivity extends Activity
                             || Utils.isMonkeyRunning()) {
                         removeTile = true;
                     }
+
+                    if (!showDev) {
+                        removeTile = true;
+                    }
                 } else if (id == R.id.nfc_payment_settings) {
                     if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC)) {
                         removeTile = true;
@@ -1260,6 +1264,18 @@ public class SettingsActivity extends Activity
                      if (!"box".equals(SystemProperties.get("ro.target.product", "tablet"))){
                          removeTile = true;
                      }
+                } else if ((id == R.id.power_save_settings) ||
+                           (id == R.id.location_settings) ||
+                           (id == R.id.account_settings) ||
+                           (id == R.id.security_settings) ||
+                           (id == R.id.accessibility_settings) ||
+                           (id == R.id.language_settings) ||
+                           (id == R.id.display_settings) ||
+                           (id == R.id.notification_settings) ||
+                           (id == R.id.date_time_settings)) {
+                    if (!showDev) {
+                        removeTile = true;
+                    }
                 }
 
                 if (UserHandle.MU_ENABLED && UserHandle.myUserId() != 0

commit 203df58cfb3281b9445b86e302eac883c93e970f

E/WifiService(  456): Invoking mWifiStateMachine.setWifiEnabled
E/WifiStateMachine(  456): setting operational mode to 1
E/RkWifiCtrl(  456): Wifi driver is not ready.
E/RkWifiCtrl(  456): rk_wifi_load_driver:(insmod)
E/RkWifiCtrl(  456): rk_wifi_load_driver: open(/sys/class/rkwifi/driver) for write failed: Permission denied (13)
E/WifiStateMachine(  456): Failed to load driver
E/WifiStateMachine(  456): setSuspendOptimizations: 2 true
E/WifiStateMachine(  456): mSuspendOptNeedsDisabled 0
W/Vibrator(  456): Failed to vibrate; no vibrator service.
E/WifiService(  456): Invoking mWifiStateMachine.setWifiEnabled

rk这个有点坑了。。。

lzm@compilere:~/workspace/rk3288/zy_n10$ grep -rn "rk_wifi_load_driver" *
hardware/libhardware_legacy/include/hardware_legacy/wifi.h:58:int rk_wifi_load_driver(int enable);
hardware/libhardware_legacy/wifi/wifi.c:315:        if (rk_wifi_load_driver(1) < 0)
hardware/libhardware_legacy/wifi/wifi.c:376:        ret = rk_wifi_load_driver(0);
hardware/libhardware_legacy/wifi/rk_wifi_ctrl.c:48:int rk_wifi_load_driver(int enable);
hardware/libhardware_legacy/wifi/rk_wifi_ctrl.c:195:int rk_wifi_load_driver(int enable)
hardware/libhardware_legacy/wifi/rk_wifi_ctrl.c:201:    ALOGE("rk_wifi_load_driver:(%s)", enable? "insmod":"rmmod");
hardware/libhardware_legacy/wifi/rk_wifi_ctrl.c:216:        ALOGE("rk_wifi_load_driver: open(%s) for write failed: %s (%d)",
hardware/libhardware_legacy/wifi/rk_wifi_ctrl.c:224:        ALOGE("rk_wifi_load_driver: write(%s) failed: %s (%d)",

属于hal层，

HAL概述

https://www.cnblogs.com/lcw/p/3335505.html

编译完放置在 /system/lib/

130|root@EMT100T:/sys/class/rkwifi # ls /system/lib/
libhardware.so            libharfbuzz_ng.so         libhwui.so
libhardware_legacy.so     libhevcdec.so

单独编译：

source build/envsetup.sh

lzm@compilere:~/workspace/rk3288/zy_n10$ lunch

You're building on Linux

Lunch menu... pick a combo:
     1. rk3288-user
     2. rk3288-userdebug
     3. rk3288_box-userdebug
     4. rk3288-eng
     5. mini_emulator_mips-userdebug
     6. mini_emulator_arm64-userdebug
     7. mini_emulator_x86-userdebug
     8. mini_emulator_x86_64-userdebug
     9. m_e_arm-userdebug
     10. aosp_shamu-userdebug
     11. aosp_flounder-userdebug

Which would you like? [aosp_arm-eng] 2

cd hardware/libhardware_legacy

mm

android源码目录下的build/envsetup.sh文件，描述编译的命令

• m: Makes from the top of the tree.
• mm: Builds all of the modules in the current directory.
• mmm: Builds all of the modules in the supplied directories.

要想使用这些命令，首先需要在android源码根目录执行. build/envsetup.sh 脚本设置环境

m：编译所有的模块
mm：编译当前目录下的模块，当前目录下要有Android.mk文件
mmm：编译指定路径下的模块，指定路径下要有Android.mk文件

下面举个例子说明，假设我要编译android下的\hardware\libhardware_legacy\power模块，当前目录为源码根目录，方法如下：

1、. build/envsetup.sh
2、mmm hardware/libhardware_legacy/power/

或者 ：

1、. build/envsetup.sh
2、cd hardware/libhardware_legacy/power/
3、mm

adb push  libhardware_legacy.so /system/lib/

adb shell am start com.android.settings/com.android.settings.Settings

130|root@EMT100T:/ # logcat -s RkWifiCtrl
--------- beginning of main
--------- beginning of system
D/RkWifiCtrl(  439): check_wifi_preload: Wifi driver is not preload when bootup, load when open wifi.
E/RkWifiCtrl(  439): rk_wifi_load_driver:(rmmod)
E/RkWifiCtrl(  439): Wifi driver is not ready.
D/RkWifiCtrl(  439): check_wifi_preload: Wifi driver is not preload when bootup, load when open wifi.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): rk_wifi_load_driver:(insmod)
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.
E/RkWifiCtrl(  439): Wifi driver is not ready.

net/rfkill/rfkill-wlan.c:100:int get_wifi_chip_type(void)
net/rfkill/rfkill-wlan.c:152:EXPORT_SYMBOL(get_wifi_chip_type);
net/rfkill/rfkill-wlan.c:491:   chip = get_wifi_chip_type();

强制返回

} else if (strcmp(wifi_chip_type_string, "rtl8188eu") == 0) {
    type = WIFI_RTL8188EU;

kernel$ vi drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c

看了下，主要也是这些接口，主要是看当前的chip类型，还有就是电源控制，没啥用。
void rkwifi_sysif_exit(void)
{
    // need to remove the sys files and class
    class_remove_file(rkwifi_class, &class_attr_chip);//返回芯片类型
    class_remove_file(rkwifi_class, &class_attr_power);//电源控制
    class_remove_file(rkwifi_class, &class_attr_driver);//驱动特殊初始化
#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
    class_remove_file(rkwifi_class, &class_attr_preload);

看看驱动特殊初始化有没做啥？

static int wifi_init_exit_module(int enable)
{
    int ret = 0;

#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
#else
    int type = get_wifi_chip_type();
//#ifdef CONFIG_RKWIFI
     if (type < WIFI_AP6XXX_SERIES) {
        if (enable > 0)
             ret = rockchip_wifi_init_module_rkwifi();
        else
            rockchip_wifi_exit_module_rkwifi();
        return ret;
    }
//#endif
//#ifdef CONFIG_RTL_WIRELESS_SOLUTION
    if (type < WIFI_RTL_SERIES) {
        if (enable > 0)
             ret = rockchip_wifi_init_module_rtkwifi();
        else
             rockchip_wifi_exit_module_rtkwifi();
        return ret;
    }
//#endif
//#ifdef CONFIG_ESP8089
    if (type == WIFI_ESP8089) {
        if (enable > 0)
            ret = rockchip_wifi_init_module_esp8089();
        else
            rockchip_wifi_exit_module_esp8089();
        return ret;
    }
//#endif
#endif
    return ret;
}

可以看到最后调用了不同的驱动初始化，这里我只看我们的

rockchip_wifi_init_module_rtkwifi

麻烦，这么多。。。。

lzm@compilere:~/workspace/rk3288/zy_n10/kernel$ grep -rn "rockchip_wifi_init_module_rtkwifi" drivers/net/
Binary file drivers/net/built-in.o matches
drivers/net/wireless/rockchip_wlan/rtl8188fu/os_dep/linux/usb_intf.c:1662:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8188fu/os_dep/linux/usb_intf.c:1696:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8188fu/os_dep/linux/usb_intf.c:1699:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723bs/os_dep/linux/sdio_intf.c:1047:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8723bs/os_dep/linux/sdio_intf.c:1083:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723bs/os_dep/linux/sdio_intf.c:1086:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8189es/os_dep/linux/sdio_intf.c:1061:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8189es/os_dep/linux/sdio_intf.c:1095:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8189es/os_dep/linux/sdio_intf.c:1098:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c:145:extern int rockchip_wifi_init_module_rtkwifi(void);
drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c:172:            ret = rockchip_wifi_init_module_rtkwifi();
drivers/net/wireless/rockchip_wlan/rtl8723bu/os_dep/linux/usb_intf.c:1761:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8723bu/os_dep/linux/usb_intf.c:1793:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723bu/os_dep/linux/usb_intf.c:1796:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8812au/os_dep/linux/usb_intf.c:1758:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8812au/os_dep/linux/usb_intf.c:1790:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8812au/os_dep/linux/usb_intf.c:1793:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723au/os_dep/linux/usb_intf.c:2163:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8723au/os_dep/linux/usb_intf.c:2195:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723au/os_dep/linux/usb_intf.c:2198:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8192cu/os_dep/linux/usb_intf.c:1622:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8192cu/os_dep/linux/usb_intf.c:1654:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8192cu/os_dep/linux/usb_intf.c:1657:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8192du/os_dep/linux/usb_intf.c:1651:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8192du/os_dep/linux/usb_intf.c:1683:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8192du/os_dep/linux/usb_intf.c:1686:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723bs-vq0/os_dep/linux/sdio_intf.c:1047:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8723bs-vq0/os_dep/linux/sdio_intf.c:1083:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8723bs-vq0/os_dep/linux/sdio_intf.c:1086:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8189fs/os_dep/linux/sdio_intf.c:1059:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8189fs/os_dep/linux/sdio_intf.c:1093:late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8189fs/os_dep/linux/sdio_intf.c:1096:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8188eu/os_dep/linux/usb_intf.c:1946:int rockchip_wifi_init_module_rtkwifi(void)
drivers/net/wireless/rockchip_wlan/rtl8188eu/os_dep/linux/usb_intf.c:1978://late_initcall(rockchip_wifi_init_module_rtkwifi);
drivers/net/wireless/rockchip_wlan/rtl8188eu/os_dep/linux/usb_intf.c:1981:EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
Binary file drivers/net/wireless/rockchip_wlan/rtl8188eu/os_dep/linux/usb_intf.o matches

可以看到其实就是使能电源。。。以及驱动初始化。

int rockchip_wifi_init_module_rtkwifi(void)
{
#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
    int type = get_wifi_chip_type();
    if (type < WIFI_AP6XXX_SERIES || type == WIFI_ESP8089) return 0;
#endif
    printk("\n");
    printk("=======================================================\n");
    printk("==== Launching Wi-Fi driver! (Powered by Rockchip) ====\n");
    printk("=======================================================\n");
    printk("Realtek 8188EU USB WiFi driver (Powered by Rockchip,Ver %s) init.\n", RTL8192_DRV_VERSION);
    rockchip_wifi_power(1);

    return rtw_drv_entry();
}

void rockchip_wifi_exit_module_rtkwifi(void)
{
#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
    int type = get_wifi_chip_type();
    if (type < WIFI_AP6XXX_SERIES || type == WIFI_ESP8089) return;
#endif
    printk("\n");
    printk("=======================================================\n");
    printk("==== Dislaunching Wi-Fi driver! (Powered by Rockchip) ====\n");
    printk("=======================================================\n");
    printk("Realtek 8188EU USB WiFi driver (Powered by Rockchip,Ver %s) init.\n", RTL8192_DRV_VERSION);
    rtw_drv_halt();
    rockchip_wifi_power(0);
}

#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
//late_initcall(rockchip_wifi_init_module_rtkwifi);
//module_exit(rockchip_wifi_exit_module_rtkwifi);
#else
EXPORT_SYMBOL(rockchip_wifi_init_module_rtkwifi);
EXPORT_SYMBOL(rockchip_wifi_exit_module_rtkwifi);
#endif
//module_init(rtw_drv_entry);
late_initcall(rtw_drv_entry);
module_exit(rtw_drv_halt);

logcat -s WifiHW

E/WifiHW  (  445): Failed to stop supplicant

logcat -s WifiStateMachine

发现wpa_supplicant  service没启动。。。。

https://blog.csdn.net/wh_19910525/article/details/7392199

lzm@compilere:~/workspace/rk3288/zy_n10/frameworks$ grep -rn "Failed to start supplicant!" *
opt/net/wifi/service/java/com/android/server/wifi/WifiStateMachine.java:5273:                            loge("Failed to start supplicant!");

frameworks$ vi opt/net/wifi/service/java/com/android/server/wifi/WifiStateMachine.java

同时过滤多个tag

logcat  -s  'RkWifiCtrl | WifiHW  | WifiStateMachine'

130|root@EMT100T:/ # logcat *:D

I/wpa_supplicant( 1256): Successfully initialized wpa_supplicant: for broadcom wifi
E/wpa_supplicant( 1257): Failed to open Android control socket 'wpa_wlan0'
E/wpa_supplicant( 1257): Failed to initialize wpa_supplicant
E/wpa_supplicant( 1261): Failed to open Android control socket 'wpa_wlan0'
E/wpa_supplicant( 1261): Failed to initialize wpa_supplicant
^C

排查到最后，发现是init脚本里面启动wpa_supplicant service部分没包含进去。