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CPU：RK3399
系统：Android 7.1
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 device found, idVendor=2c7c, idProduct=0125 [ 11.828386] usb 1-1.1: New USB device strings: 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
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 --git a/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.c index 1799aa0..f6c9e5d 100644 --- a/kernel/drivers/usb/serial/option.c +++ b/kernel/drivers/usb/serial/option.c @@ -241,6 +241,7 @@ static void option_instat_callback(struct urb *urb); #define QUECTEL_VENDOR_ID 0x2c7c /* These Quectel products use Quectel's vendor ID */ +#define QUECTEL_PRODUCT_EC20 0x0125 #define QUECTEL_PRODUCT_EC21 0x0121 #define QUECTEL_PRODUCT_EC25 0x0125 #define QUECTEL_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
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 --git a/device/rockchip/common/device.mk b/device/rockchip/common/device.mk index be2cb2c..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
5、编译时将 so 库拷贝到上面指定目录 /system/lib64/libreference-ril.so
diff --git a/vendor/rockchip/common/phone/phone.mk b/vendor/rockchip/common/phone/phone.mk index 946aacd..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 +=
6、设置 BOARD_HAVE_DONGLE 变量
diff --git a/device/rockchip/rk3399/rk3399_all.mk b/device/rockchip/rk3399/rk3399_all.mk index 7a2d870..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 modem dongle support -BOARD_HAVE_DONGLE := false +BOARD_HAVE_DONGLE := true BOARD_GRAVITY_SENSOR_SUPPORT := true
此时移植完成，只要 so 库没问题，就可以正常上网。
如果 radio log 中打印如下信息：
RIL_SAP_Init not defined 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/cmdline exception=java.io.FileNotFoundException: /proc/cmdline (Permission denied)
此报错不影响联网，可以忽略