RK3399 4G模块移远EC20移植调试
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
