From 992f5f7bfdd745e17fe84063f1b103d75d293b3a Mon Sep 17 00:00:00 2001
From: Jeff Hatch <jhatch@multitech.com>
Date: Mon, 29 Jul 2019 09:14:46 -0500
Subject: Additional updates to qmi for Quectel radio support

---
 .../linux-4.9-quectel_qmi_wwan_support.patch       | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-quectel_qmi_wwan_support.patch

diff --git a/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-quectel_qmi_wwan_support.patch b/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-quectel_qmi_wwan_support.patch
new file mode 100644
index 0000000..d0b5fe0
--- /dev/null
+++ b/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-quectel_qmi_wwan_support.patch
@@ -0,0 +1,73 @@
+Patch for QMI WWAN Driver to support the Quectel EG95 device.
+==================================================================================
+--- a/drivers/net/usb/qmi_wwan.c	2019-06-25 18:33:52.000000000 +0300
++++ b/drivers/net/usb/qmi_wwan.c	2019-06-25 18:38:06.858767868 +0300
+@@ -224,6 +224,23 @@
+ 	return 1;
+ }
+ 
++struct sk_buff *qmi_wwan_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
++{
++	if (dev->udev->descriptor.idVendor != cpu_to_le16(0x2c7c))
++		return skb;
++
++	// Skip Ethernet header from message
++	if (skb_pull(skb, ETH_HLEN)) {
++		return skb;
++	} else {
++		dev_err(&dev->intf->dev, "Packet Dropped ");
++	}
++
++	// Filter the packet out, release it
++	dev_kfree_skb_any(skb);
++	return NULL;
++}
++
+ /* very simplistic detection of IPv4 or IPv6 headers */
+ static bool possibly_iphdr(const char *data)
+ {
+@@ -445,6 +462,20 @@
+ 	}
+ 	dev->net->netdev_ops = &qmi_wwan_netdev_ops;
+ 	dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
++
++	if (dev->udev->descriptor.idVendor == cpu_to_le16(0x2c7c)) {
++		dev_info(&intf->dev, "Quectel EG95 work on RawIP mode\n");
++		dev->net->flags |= IFF_NOARP;
++
++		usb_control_msg(
++		interface_to_usbdev(intf),
++		usb_sndctrlpipe(interface_to_usbdev(intf), 0),
++		0x22, //USB_CDC_REQ_SET_CONTROL_LINE_STATE
++		0x21, //USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE
++		1, //active CDC DTR
++		intf->cur_altsetting->desc.bInterfaceNumber,
++		NULL, 0, 100);
++	}
+ err:
+ 	return status;
+ }
+@@ -536,6 +567,7 @@
+ 	.unbind		= qmi_wwan_unbind,
+ 	.manage_power	= qmi_wwan_manage_power,
+ 	.rx_fixup       = qmi_wwan_rx_fixup,
++	.tx_fixup	= qmi_wwan_tx_fixup,
+ };
+ 
+ static const struct driver_info	qmi_wwan_info_quirk_dtr = {
+@@ -545,6 +577,7 @@
+ 	.unbind		= qmi_wwan_unbind,
+ 	.manage_power	= qmi_wwan_manage_power,
+ 	.rx_fixup       = qmi_wwan_rx_fixup,
++	.tx_fixup	= qmi_wwan_tx_fixup,
+ 	.data           = QMI_WWAN_QUIRK_DTR,
+ };
+ 
+@@ -947,6 +980,7 @@
+ 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)},	/* Quectel EC21 Mini PCIe */
+ 	{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)},	/* Quectel BG96 */
+ 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0306, 4)},	/* Quectel EP06 Mini PCIe */
++	{QMI_FIXED_INTF(0x2c7c, 0x0195, 4)},	/* Quectel EG95 */
+ 
+ 	/* 4. Gobi 1000 devices */
+ 	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
-- 
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