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Commit 11207b6f authored by Bjørn Mork's avatar Bjørn Mork Committed by Greg Kroah-Hartman
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net: qmi_wwan: add support for ZTE MF820D 



ZTE have yet to discover the magic of USB descriptors.  These
devices use ff/ff/ff for class/subclass/protocol regardless of
function, except for usb-storage.  Use an interface number
whitelist to force the driver to bind only to the QMI/wwan
interface.

Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5889d3d4

drivers/net/usb/qmi_wwan.c

+34 −0
Original line number Diff line number Diff line
@@ -214,6 +214,20 @@ static int qmi_wwan_bind_shared(struct usbnet *dev, struct usb_interface *intf) 
	struct usb_driver *subdriver = NULL;

	atomic_t *pmcount = (void *)&dev->data[1];



	/* ZTE makes devices where the interface descriptors and endpoint

	 * configurations of two or more interfaces are identical, even

	 * though the functions are completely different.  If set, then

	 * driver_info->data is a bitmap of acceptable interface numbers

	 * allowing us to bind to one such interface without binding to

	 * all of them

	 */

	if (dev->driver_info->data &&

	    !test_bit(intf->cur_altsetting->desc.bInterfaceNumber, &dev->driver_info->data)) {

		dev_info(&intf->dev, "not on our whitelist - ignored");

		rv = -ENODEV;

		goto err;

	}



	atomic_set(pmcount, 0);



	/* collect all three endpoints */
@@ -341,6 +355,17 @@ static const struct driver_info qmi_wwan_gobi = { 
	.manage_power	= qmi_wwan_manage_power,

};



/* ZTE suck at making USB descriptors */

static const struct driver_info	qmi_wwan_force_int4 = {

	.description	= "Qualcomm Gobi wwan/QMI device",

	.flags		= FLAG_WWAN,

	.bind		= qmi_wwan_bind_gobi,

	.unbind		= qmi_wwan_unbind_shared,

	.manage_power	= qmi_wwan_manage_power,

	.data		= BIT(4), /* interface whitelist bitmap */

};





#define HUAWEI_VENDOR_ID	0x12D1

#define QMI_GOBI_DEVICE(vend, prod) \

	USB_DEVICE(vend, prod), \
@@ -375,6 +400,15 @@ static const struct usb_device_id products[] = { 
		.bInterfaceProtocol = 0xff,

		.driver_info        = (unsigned long)&qmi_wwan_shared,

	},

	{	/* ZTE MF820D */

		.match_flags	    = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO,

		.idVendor           = 0x19d2,

		.idProduct          = 0x0167,

		.bInterfaceClass    = 0xff,

		.bInterfaceSubClass = 0xff,

		.bInterfaceProtocol = 0xff,

		.driver_info        = (unsigned long)&qmi_wwan_force_int4,

	},

	{QMI_GOBI_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */

	{QMI_GOBI_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */

	{QMI_GOBI_DEVICE(0x03f0, 0x371d)},	/* HP un2430 Mobile Broadband Module */