RK3399 4G模块移远EC20移植调试

monsterskyy

CPU：RK3399

系统：Android 7.1

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1、通过串口打印或者adb获取模块的 pid 和 vid，顺便可以看到生成 4 个虚拟串口 /dev/ttyUSB*

[   11.734379] usb 1-1.1: new high-speed USB device number 3 using ehci-platform

[   11.828247] usb 1-1.1: New USB devicefound, idVendor=2c7c, idProduct=0125

[   11.828386] usb 1-1.1: New USB devicestrings: Mfr=1, Product=2, SerialNumber=0

[   11.828413] usb 1-1.1: Product: Android

[   11.828436] usb 1-1.1: Manufacturer:Android

[   11.835480] option 1-1.1:1.0: GSM modem (1-port) converter detected

[   11.841217] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0

[   11.844988] option 1-1.1:1.1: GSM modem (1-port) converter detected

[   11.851892] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1

[   11.853964] option 1-1.1:1.2: GSM modem (1-port) converter detected

[   11.864677] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2

[   11.865658] option 1-1.1:1.3: GSM modem (1-port) converter detected

[   11.871387] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB3

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2、在代码中添加模块的 pid 和 vid，原始代码中已经包含移远的几个模块，仿照现有的添加 EC20

diff --gita/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.c

index1799aa0..f6c9e5d 100644

--- a/kernel/drivers/usb/serial/option.c

+++b/kernel/drivers/usb/serial/option.c

@@ -241,6 +241,7 @@ static voidoption_instat_callback(struct urb *urb);

#defineQUECTEL_VENDOR_ID                     0x2c7c

/* These Quectel products use Quectel's vendor ID */

+#define QUECTEL_PRODUCT_EC20                   0x0125

#defineQUECTEL_PRODUCT_EC21                  0x0121

#defineQUECTEL_PRODUCT_EC25                  0x0125

#defineQUECTEL_PRODUCT_BG96                  0x0296

@@ -1200,6 +1201,8 @@ static const struct usb_device_id option_ids[] = {

        { USB_DEVICE(QUALCOMM_VENDOR_ID,YUGA_PRODUCT_CLM920_NC5),

          .driver_info =(kernel_ulong_t)&yuga_clm920_nc5_blacklist },

        /* Quectel products using Quectel vendor ID*/

+       { USB_DEVICE(QUECTEL_VENDOR_ID,QUECTEL_PRODUCT_EC20),

+         .driver_info =(kernel_ulong_t)&net_intf4_blacklist },

        { USB_DEVICE(QUECTEL_VENDOR_ID,QUECTEL_PRODUCT_EC21),

          .driver_info =(kernel_ulong_t)&net_intf4_blacklist },

        { USB_DEVICE(QUECTEL_VENDOR_ID,QUECTEL_PRODUCT_EC25)

3、添加模块的 so 库，此库需要移远提供，so 支持的系统要匹配，将 so 库拷贝到下面的路径

vendor/rockchip/common/phone/lib/libreference-ril.so

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4、打开device/rockchip/common/device.mk 文件，修改 rild.libpath 路径为rild.libpath=/system/lib64/libreference-ril.so

diff --gita/device/rockchip/common/device.mk b/device/rockchip/common/device.mk

indexbe2cb2c..69034a7 100755

---a/device/rockchip/common/device.mk

+++b/device/rockchip/common/device.mk

@@ -699,7 +699,7 @@ endif

ifeq ($(strip $(BOARD_HAVE_DONGLE)),true)

ifeq ($(strip $(TARGET_ARCH)), ARM64)

PRODUCT_PROPERTY_OVERRIDES += \

-   rild.libpath=/system/lib64/libril-rk29-dataonly.so

+   rild.libpath=/system/lib64/libreference-ril.so

else

PRODUCT_PROPERTY_OVERRIDES += \

     rild.libpath=/system/lib/libril-rk29-dataonly.so

因为 rk3399 是64位 CPU，所以 ifeq ($(strip $(TARGET_ARCH)), arm64)条件成立。

但是前提都是 BOARD_HAVE_DONGLE变量值为 true

注：本人测试，修改下面两个文件中的 rild.libpath 不起作用

device/rockchip/rk3399/system.prop

device/rockchip/rk3399/rk3399_all/system.prop

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5、编译时将 so 库拷贝到上面指定目录/system/lib64/libreference-ril.so

diff --gita/vendor/rockchip/common/phone/phone.mk b/vendor/rockchip/common/phone/phone.mk

index946aacd..f8fc6e7 100755

---a/vendor/rockchip/common/phone/phone.mk

+++b/vendor/rockchip/common/phone/phone.mk

@@ -8,7 +8,8 @@PRODUCT_COPY_FILES += \

    $(CUR_PATH)/phone/etc/ppp/ip-down:system/etc/ppp/ip-down \

    $(CUR_PATH)/phone/etc/ppp/ip-up:system/etc/ppp/ip-up \

    $(CUR_PATH)/phone/etc/ppp/call-pppd:system/etc/ppp/call-pppd \

-    $(CUR_PATH)/phone/etc/operator_table:system/etc/operator_table

+   $(CUR_PATH)/phone/etc/operator_table:system/etc/operator_table \

+   $(CUR_PATH)/phone/lib/libreference-ril.so:system/lib64/libreference-ril.so

ifeq ($(strip $(PRODUCT_MODEM)), DTS4108C)

PRODUCT_COPY_FILES += \

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6、设置 BOARD_HAVE_DONGLE变量

diff --gita/device/rockchip/rk3399/rk3399_all.mk b/device/rockchip/rk3399/rk3399_all.mk

index7a2d870..ce5060c 100755

---a/device/rockchip/rk3399/rk3399_all.mk

+++b/device/rockchip/rk3399/rk3399_all.mk

@@ -63,7 +63,7 @@BOARD_NFC_SUPPORT := false

BOARD_HAS_GPS := false

#for 3G/4G modemdongle support

-BOARD_HAVE_DONGLE:= false

+BOARD_HAVE_DONGLE:= true

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BOARD_GRAVITY_SENSOR_SUPPORT := true

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此时移植完成，只要 so 库没问题，就可以正常上网。

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如果 radio log 中打印如下信息：

RIL_SAP_Init notdefined or exported in /system/lib64/libril-rk29-dataonly.so

检查 rild.libpath 的路径和名称是否正确。

No /proc/cmdlineexception=java.io.FileNotFoundException: /proc/cmdline (Permission denied)

此报错不影响联网，可以忽略

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starskyuu

学习了，谢谢分享