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