一，移植适配
1. 驱动移植
代码路径：longan/kernel/linux-4.9/drivers/usb/serial/option.c
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 9f96dd2..2f25466 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -245,6 +245,7 @@ static int option_probe(struct usb_serial *serial,#define QUECTEL_VENDOR_ID 0x2c7c
/* These Quectel products use Quectel's vendor ID */
+#define QUECTEL_PRODUCT_EC20 0x6002
#define QUECTEL_PRODUCT_EC21 0x0121
#define QUECTEL_PRODUCT_EC25 0x0125
#define QUECTEL_PRODUCT_BG96 0x0296
@@ -1079,6 +1080,7 @@ static int option_probe(struct usb_serial *serial,{ USB_DEVICE(QUALCOMM_VENDOR_ID, UBLOX_PRODUCT_R410M),.driver_info = RSVD(1) | RSVD(3) },/* Quectel products using Quectel vendor ID */
+ { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC20)},{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC21),.driver_info = RSVD(4) },{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC25),
@@ -1999,6 +2001,9 @@ static int option_probe(struct usb_serial *serial,
#ifdef CONFIG_PM.suspend = usb_wwan_suspend,.resume = usb_wwan_resume,
+#if 1 //Added by Quectel
+ .reset_resume = usb_wwan_resume,
+#endif
#endif
};@@ -2036,6 +2041,15 @@ static int option_probe(struct usb_serial *serial,iface_desc->bInterfaceClass != USB_CLASS_CDC_DATA)return -ENODEV;+#if 1 //Added by Quectel
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {
+ __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);
+ //Quectel EC200S's interface 0 can be used as USB Network device (ecm, rndis)
+ if (serial->interface->cur_altsetting->desc.bInterfaceClass != 0xFF)
+ return -ENODEV;
+ }
+#endif/* Store the device flags so we can use them during attach. */usb_set_serial_data(serial, (void *)device_flags);代码路径：longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 3dfdfc8..0476229 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -505,6 +505,14 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,usb_sndbulkpipe(serial->dev, endpoint) | dir,buf, len, callback, ctx);+#if 1 //Added by Quectel for zero packet
+ if (dir == USB_DIR_OUT) {
+ struct usb_device_descriptor *desc = &serial->dev->descriptor;
+ if (desc->idVendor == cpu_to_le16(0x2C7C))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ }
+#endif
+return urb;
}
2. ril库移植
代码路径：android/device/softwinner/ceres-b6/ceres_b6.mk
diff --git a/android/device/softwinner/ceres-b6/ceres_b6.mk b/android/device/softwinner/ceres-b6/ceres_b6.mk
index 321272978e..8e36d8cd74 100644
--- a/android/device/softwinner/ceres-b6/ceres_b6.mk
+++ b/android/device/softwinner/ceres-b6/ceres_b6.mk
@@ -159,9 +159,9 @@ PRODUCT_PACKAGES += \
#PRODUCT_PACKAGES += AllwinnerGmsIntegration
-############################### 3G Dongle Support ###############################
+############################### 4G Dongle Support ###############################
# Radio Packages and Configuration Flie
-$(call inherit-product-if-exists, vendor/aw/public/prebuild/lib/librild/radio_common.mk)
+$(call inherit-product-if-exists, vendor/quectel/libquectel-ril/radio_common.mk)
代码路径：android/device/softwinner/ceres-b6/configs/manifest.xml
diff --git a/android/device/softwinner/ceres-b6/configs/manifest.xml b/android/device/softwinner/ceres-b6/configs/manifest.xml
index fb82972d59..b9c7cb5178 100644
--- a/android/device/softwinner/ceres-b6/configs/manifest.xml
+++ b/android/device/softwinner/ceres-b6/configs/manifest.xml
@@ -25,6 +25,24 @@<name>IUsb</name><instance>default</instance></interface>
+ </hal>
+ <hal format="hidl">
+ <name>android.hardware.radio.deprecated</name>
+ <transport>hwbinder</transport>
+ <version>1.0</version>
+ <interface>
+ <name>IOemHook</name>
+ <instance>slot1</instance>
+ </interface>
+ </hal>
+ <hal format="hidl">
+ <name>android.hardware.radio</name>
+ <transport>hwbinder</transport>
+ <version>1.0</version>
+ <interface>
+ <name>IRadio</name>
+ <instance>slot1</instance>
+ </interface></hal><hal format="hidl"><name>android.hardware.audio.effect</name>
代码路径：android/device/softwinner/ceres-b6/init.device.rc
diff --git a/android/device/softwinner/ceres-b6/init.device.rc b/android/device/softwinner/ceres-b6/init.device.rc
index 1f1e569d15..83185821a6 100644
--- a/android/device/softwinner/ceres-b6/init.device.rc
+++ b/android/device/softwinner/ceres-b6/init.device.rc
@@ -1,3 +1,5 @@
+import /vendor/etc/init/rild.rc
+
on init# Load persistent dm-verity stateverity_load_state
代码路径：android/hardware/ril/rild/Android.mk
diff --git a/android/hardware/ril/rild/Android.mk b/android/hardware/ril/rild/Android.mk
index b8ba508ee9..1b3d5bfa83 100644
--- a/android/hardware/ril/rild/Android.mk
+++ b/android/hardware/ril/rild/Android.mk
@@ -29,7 +29,7 @@ endif
LOCAL_MODULE_RELATIVE_PATH := hw
LOCAL_PROPRIETARY_MODULE := true
LOCAL_MODULE:= rild
-LOCAL_VINTF_FRAGMENTS := radio.xml
+#LOCAL_VINTF_FRAGMENTS := radio.xml
ifeq ($(PRODUCT_COMPATIBLE_PROPERTY),true)
LOCAL_INIT_RC := rild.rc
LOCAL_CFLAGS += -DPRODUCT_COMPATIBLE_PROPERTY
3. 添加权限
代码路径：android/device/softwinner/common/sepolicy/vendor/rild.te
diff --git a/android/device/softwinner/common/sepolicy/vendor/rild.te b/android/device/softwinner/common/sepolicy/vendor/rild.te
index 8fdddc57a6..d29b4a2688 100755
--- a/android/device/softwinner/common/sepolicy/vendor/rild.te
+++ b/android/device/softwinner/common/sepolicy/vendor/rild.te
@@ -5,6 +5,7 @@ allow rild vendor_file:file execute_no_trans;
allow rild vendor_ril_prop:file { read getattr open };
allow rild vendor_ril_prop:property_service set;
allow rild vendor_default_prop:file {open read getattr};
+allow rild rild:packet_socket create_socket_perms_no_ioctl;
allow rild vendor_toolbox_exec:file execute_no_trans;
allow rild vendor_shell_exec:file execute_no_trans;
4. ril库存放路径
代码路径：android/vendor/quectel/libquectel-ril/
A133_Android10_b$ ls -l android/vendor/quectel/libquectel-ril/
总用量 224
-rw-rw-r-- 1 fy fy 207092 12月 30 2020 apns-conf.xml
drwxrwxr-x 2 fy fy 4096 9月 5 14:25 arm64-v8a
drwxrwxr-x 2 fy fy 4096 9月 5 14:25 armeabi
drwxrwxr-x 2 fy fy 4096 9月 5 14:25 doc
-rw-rw-r-- 1 fy fy 959 12月 24 2020 ql-ril.conf
-rw-rw-r-- 1 fy fy 723 9月 5 14:26 radio_common.mk
libquectel-ril下载链接：https://download.csdn.net/download/weixin_45639314/89774784
二，调试
首先检查电压供电正常;
- 检查daemon是否运行
getprop init.svc.ril-daemon
- 查看so库是否正确配置加载
su
cat /init.rc | grep ril-daemon
- 检查permision
ls -l /dev/ttyUSB*
- 查看库版本来源
getprop gsm.version.ril-impl
