diff options
| -rw-r--r-- | drivers/net/usb/qmi_wwan.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 6d39dab497f7..c2d6c501dd85 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -63,6 +63,7 @@ enum qmi_wwan_flags { enum qmi_wwan_quirks { QMI_WWAN_QUIRK_DTR = 1 << 0, /* needs "set DTR" request */ + QMI_WWAN_QUIRK_QUECTEL_DYNCFG = 1 << 1, /* check num. endpoints */ }; struct qmimux_hdr { @@ -845,6 +846,16 @@ static const struct driver_info qmi_wwan_info_quirk_dtr = { .data = QMI_WWAN_QUIRK_DTR, }; +static const struct driver_info qmi_wwan_info_quirk_quectel_dyncfg = { + .description = "WWAN/QMI device", + .flags = FLAG_WWAN | FLAG_SEND_ZLP, + .bind = qmi_wwan_bind, + .unbind = qmi_wwan_unbind, + .manage_power = qmi_wwan_manage_power, + .rx_fixup = qmi_wwan_rx_fixup, + .data = QMI_WWAN_QUIRK_DTR | QMI_WWAN_QUIRK_QUECTEL_DYNCFG, +}; + #define HUAWEI_VENDOR_ID 0x12D1 /* map QMI/wwan function by a fixed interface number */ @@ -865,6 +876,15 @@ static const struct driver_info qmi_wwan_info_quirk_dtr = { #define QMI_GOBI_DEVICE(vend, prod) \ QMI_FIXED_INTF(vend, prod, 0) +/* Quectel does not use fixed interface numbers on at least some of their + * devices. We need to check the number of endpoints to ensure that we bind to + * the correct interface. + */ +#define QMI_QUIRK_QUECTEL_DYNCFG(vend, prod) \ + USB_DEVICE_AND_INTERFACE_INFO(vend, prod, USB_CLASS_VENDOR_SPEC, \ + USB_SUBCLASS_VENDOR_SPEC, 0xff), \ + .driver_info = (unsigned long)&qmi_wwan_info_quirk_quectel_dyncfg + static const struct usb_device_id products[] = { /* 1. CDC ECM like devices match on the control interface */ { /* Huawei E392, E398 and possibly others sharing both device id and more... */ @@ -969,6 +989,9 @@ static const struct usb_device_id products[] = { USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x581d, USB_CLASS_VENDOR_SPEC, 1, 7), .driver_info = (unsigned long)&qmi_wwan_info, }, + {QMI_QUIRK_QUECTEL_DYNCFG(0x2c7c, 0x0125)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */ + {QMI_QUIRK_QUECTEL_DYNCFG(0x2c7c, 0x0306)}, /* Quectel EP06/EG06/EM06 */ + {QMI_QUIRK_QUECTEL_DYNCFG(0x2c7c, 0x0512)}, /* Quectel EG12/EM12 */ /* 3. Combined interface devices matching on interface number */ {QMI_FIXED_INTF(0x0408, 0xea42, 4)}, /* Yota / Megafon M100-1 */ @@ -1258,11 +1281,9 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)}, /* HP lt4120 Snapdragon X5 LTE */ {QMI_FIXED_INTF(0x22de, 0x9061, 3)}, /* WeTelecom WPD-600N */ {QMI_QUIRK_SET_DTR(0x1e0e, 0x9001, 5)}, /* SIMCom 7100E, 7230E, 7600E ++ */ - {QMI_QUIRK_SET_DTR(0x2c7c, 0x0125, 4)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */ {QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */ {QMI_QUIRK_SET_DTR(0x2c7c, 0x0191, 4)}, /* Quectel EG91 */ {QMI_FIXED_INTF(0x2c7c, 0x0296, 4)}, /* Quectel BG96 */ - {QMI_QUIRK_SET_DTR(0x2c7c, 0x0306, 4)}, /* Quectel EP06 Mini PCIe */ {QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)}, /* Fibocom NL678 series */ /* 4. Gobi 1000 devices */ @@ -1344,6 +1365,7 @@ static int qmi_wwan_probe(struct usb_interface *intf, { struct usb_device_id *id = (struct usb_device_id *)prod; struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc; + const struct driver_info *info; /* Workaround to enable dynamic IDs. This disables usbnet * blacklisting functionality. Which, if required, can be @@ -1373,6 +1395,19 @@ static int qmi_wwan_probe(struct usb_interface *intf, return -ENODEV; } + info = (void *)&id->driver_info; + + /* Several Quectel modems supports dynamic interface configuration, so + * we need to match on class/subclass/protocol. These values are + * identical for the diagnostic- and QMI-interface, but bNumEndpoints is + * different. Ignore the current interface if the number of endpoints + * equals the number for the diag interface (two). + */ + if (info->data & QMI_WWAN_QUIRK_QUECTEL_DYNCFG) { + if (desc->bNumEndpoints == 2) + return -ENODEV; + } + return usbnet_probe(intf, id); } |