Openwrt Support MINI-PCIE EC20 (6)
1 Scope of Document
This document describes MINI PCIE usb hardware design, for EC20 4G module
2 Requiremen
2.1 Function Requirement
Support ec20 ppp diag under openwrt
2.2 Performance Requirement
Connect to 4G network
3 Hardware Overview
NA
4 Functional Description
4.1 Functional Block Diagram
NA
5 Porting
5.1 Kernel porting
We want to enumerate ec20 module through usb option driver
So we need to add ec20 pid and vid into option_ids , and other private modification
Index: trunk/target/linux/ramips/patches-3.18/999-support-ec20.patch
===================================================================
--- trunk/target/linux/ramips/patches-3.18/999-support-ec20.patch (nonexistent)
+++ trunk/target/linux/ramips/patches-3.18/999-support-ec20.patch (revision 9)
@@ -0,0 +1,69 @@
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -819,7 +819,7 @@ static const struct usb_device_id produc
+ {QMI_GOBI_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
+ {QMI_GOBI_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
+ {QMI_GOBI_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
+- {QMI_GOBI_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
++ //{QMI_GOBI_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
+ {QMI_GOBI_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
+ {QMI_GOBI_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
+ {QMI_GOBI_DEVICE(0x05c6, 0x9275)}, /* iRex Technologies Gobi 2000 Modem device (VR307) */
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -647,6 +647,10 @@ static const struct option_blacklist_inf
+ };
+
+ static const struct usb_device_id option_ids[] = {
++ #if 1 // add by panzidong
++ { USB_DEVICE(0x05C6,0x9215)},
++ { USB_DEVICE(0x2C7C,0x0125)},
++ #endif
+ { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MZ382) },
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
+ { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
+@@ -1873,6 +1877,9 @@ static struct usb_serial_driver option_1
+ .suspend = usb_wwan_suspend,
+ .resume = usb_wwan_resume,
+ #endif
++#if 1 // add by panzidong
++ //.reset_resume = usb_wwan_resume,
++#endif
+ };
+
+ static struct usb_serial_driver * const serial_drivers[] = {
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -90,7 +90,7 @@ static const struct usb_device_id id_tab
+ {USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
+ {USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
+ {USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
+- {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
++ //{USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
+ {USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
+ {USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
+ {USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
+--- a/drivers/usb/serial/usb_wwan.c
++++ b/drivers/usb/serial/usb_wwan.c
+@@ -470,6 +470,21 @@ static struct urb *usb_wwan_setup_urb(st
+ usb_fill_bulk_urb(urb, serial->dev,
+ usb_sndbulkpipe(serial->dev, endpoint) | dir,
+ buf, len, callback, ctx);
++ #if 1
++ //Added by panzidong 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;
+ }
<*> kmod-usb-serial..................... Support for USB-to-Serial converters
<*> kmod-usb-serial-option................... Support for Option HSDPA modems
-*- kmod-usb-serial-wwan..................... Support for GSM and CDMA modems
<*> luci-proto-3g............................................. Support for 3G
5.2 System configure
If we want to use ec20, we can manual change /etc/config/network
Then /etc/init.d/network restart, pppd deamon will be up.
In the nodewrt2p we can change the config_generate file, when system fisrt time bootup
ec20 relate ppp configure will be auto write to /etc/config/network file, get the right ipaddr ,
Normal access to the Internet , here are the changes made:
Index: trunk/package/base-files/files/bin/config_generate
===================================================================
--- trunk/package/base-files/files/bin/config_generate (revision 15)
+++ trunk/package/base-files/files/bin/config_generate (revision 16)
@@ -17,9 +17,30 @@
delete network.globals
set network.globals='globals'
set network.globals.ula_prefix='auto'
EOF
}
+generate_4g_network() {
+ uci -q batch <<EOF
+set network.mobile=interface
+set network.mobile.proto='3g'
+set network.mobile.device='/dev/ttyUSB2'
+set network.mobile.service='utms'
+set network.mobile.apn='3gnet'
+EOF
+}
@@ -167,4 +189,8 @@
json_get_keys keys led
for key in $keys; do generate_led $key; done
+generate_4g_network
uci commit
