android 6.0 EC20驱动移植

版本：android 6.0

模块：移远EC20 R2.1 PCIE接口

参考

Quectel_Android_RIL_Driver_User_Guide_V1.6.pdf
reference-ril/quectel_ril_porting_guide.txt

文档中有描述不全的，结合网上搜索资料，整理一下移植注意事项

Linux Kernel Configure by "make menuconfig ARCH=arm64"
1.1 USB Driver Configure for UC15/UC20/EC20
Device Drivers --->
[*] USB support --->
<*> USB Serial Converter support
[*] USB Generic Serail Driver
[*] USB Driver for GSM and CMDA modems

修改：autochips/kernel/drivers/usb/serial/option.c 文件，添加EC20模块的注册时的VID和PID号，以及生成设备阶段的接口4用于网络设备

static const struct usb_device_id option_ids[] = {{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 *///EC20 yiyuan 4G LTE module configure#if  1//Added by Quectel{ USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */{ USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */{ USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */{ USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25/EC20 R2.0 */{ USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */#endif{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6280) },
}static int option_probe(struct usb_serial *serial,const struct usb_device_id *id)
{struct usb_interface_descriptor *iface_desc =&serial->interface->cur_altsetting->desc;struct usb_device_descriptor *dev_desc = &serial->dev->descriptor;#if 1 //Added by Quectel//Quectel UC20's interface 4 can be used as USB Network deviceif (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct == cpu_to_le16(0x9003)&& serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)return -ENODEV;//Quectel EC20's interface 4 can be used as USB Network deviceif (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct == cpu_to_le16(0x9215)&& serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)return -ENODEV;//Quectel EC25&EC21 's interface 4 can be used as USB Network deviceif (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)&& serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)return -ENODEV;
#endif/* Never bind to the CD-Rom emulation interface */if (iface_desc->bInterfaceClass == 0x08)return -ENODEV;

/drivers/usb/serial/qcserial.c 新增

 static const struct usb_device_id id_table[] = {
#if 1 //Added by Quectel
{ USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */
{ USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */
{ USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */
{ USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25/EC20 R2.0 */
{ USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */
#endif

/drivers/net/usb/qmi_wwan.c 新增

 #if 1 //Added by Quectel
{QMI_GOBI_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */
{QMI_GOBI_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */
{QMI_GOBI_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */
{QMI_GOBI_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25/EC20 R2.0 */
{QMI_GOBI_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */
#endif

/drivers/usb/serial/usb_wwan.c 新增

 static struct urb *usb_wwan_setup_urb(struct usb_serial *serial, int endpoint,
int dir, void *ctx, char *buf, int len,void (*callback) (struct urb *))#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(0x05C6) && desc->idProduct == cpu_to_le16(0x9090))
urb->transfer_flags |= URB_ZERO_PACKET;
if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9003))
urb->transfer_flags |= URB_ZERO_PACKET;
if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9215))
urb->transfer_flags |= URB_ZERO_PACKET;
if (desc->idVendor == cpu_to_le16(0x2C7C))
urb->transfer_flags |= URB_ZERO_PACKET;
}
#endif
return urb;

修改启动脚本/system/core/rootdir/init.rc

service ril-daemon /system/bin/rild -l /system/lib64/libreference-ril.soclass mainsocket rild stream 660 root radiosocket rild-debug stream 666 radio systemuser rootgroup radio cache inet misc audio sdcard_rw logservice quectel-pppd /etc/ppp/init.quectel-pppdclass mainuser rootgroup radio cache inet misc logdisabled

modifying the Right of service ril-daemon
serivce ril-daemon require root privilege.
comment out the function switchUser() in the file hardware/ril/rild/rild.c. as below:
OpenLib:
#endif
//switchUser();
extract Quectel's reference-ril.zip to hardware/ril/reference-ril/
re-build your android source code
xxx
```
 
```

问题点：

build/core/base_rules.mk:157: *** hardware/ril/reference-ril: MODULE.TARGET.EXECUTABLES.chat already defined by external/ppp/chat. Stop.
build/core/base_rules.mk:157: *** hardware/ril/reference-ril: MODULE.TARGET.EXECUTABLES.chat already defined by external/ppp/chat. Stop.

删除external/ppp/chat

移植成功后，使用移动的物联卡，需要手动设置APN为CMIOT才能正常上网

添加CMIOT到系统默认APN中，一般有下面几个位置
1. frameworks/base/core/res/res/xml/apns.xml

2. 我的A64在： device/softwinner/common/rild/apns-conf_sdk.xml

3. RK平台中,采用此路径: device/rockchip/common/phone/etc/apns-full-conf.xml

添加内容为：

<!-- add by zhangrl -->
<apn carrier="CMIOT" mcc="460" mnc="04" apn="CMIOT" type="default,supl" />

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