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net: qmi_wwan: add support for ZTE MF820D

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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: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bjørn Mork 2012-03-16 15:41:27 +01:00 committed by Greg Kroah-Hartman
parent 5889d3d420
commit 11207b6fe0
1 changed files with 34 additions and 0 deletions
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34
drivers/net/usb/qmi_wwan.c
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@ -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 */