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114 lines
3.3 KiB
114 lines
3.3 KiB
From 128524b9db3e4f4245226852bee771bd03db75be Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
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Date: Tue, 3 Nov 2015 11:01:42 +0100
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Subject: [PATCH 1/2] USB: qcserial: Add support for Quectel EC20 Mini PCIe
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module
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It seems like this device has same vendor and product IDs as G2K
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devices, but it has different number of interfaces(4 vs 5) and also
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different interface layout which makes it currently unusable:
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usbcore: registered new interface driver qcserial
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usbserial: USB Serial support registered for Qualcomm USB modem
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usb 2-1.2: unknown number of interfaces: 5
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lsusb output:
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Bus 002 Device 003: ID 05c6:9215 Qualcomm, Inc. Acer Gobi 2000 Wireless
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Device Descriptor:
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bLength 18
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bDescriptorType 1
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bcdUSB 2.00
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bDeviceClass 0 (Defined at Interface level)
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bDeviceSubClass 0
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bDeviceProtocol 0
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bMaxPacketSize0 64
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idVendor 0x05c6 Qualcomm, Inc.
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idProduct 0x9215 Acer Gobi 2000 Wireless Modem
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bcdDevice 2.32
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iManufacturer 1 Quectel
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iProduct 2 Quectel LTE Module
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iSerial 0
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bNumConfigurations 1
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Configuration Descriptor:
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bLength 9
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bDescriptorType 2
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wTotalLength 209
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bNumInterfaces 5
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bConfigurationValue 1
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iConfiguration 0
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bmAttributes 0xa0
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(Bus Powered)
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Remote Wakeup
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MaxPower 500mA
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Signed-off-by: Petr Štetiar <ynezz@true.cz>
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---
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drivers/usb/serial/qcserial.c | 39 +++++++++++++++++++++++++++++++++++++++
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1 file changed, 39 insertions(+)
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--- a/drivers/usb/serial/qcserial.c
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+++ b/drivers/usb/serial/qcserial.c
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@@ -22,6 +22,8 @@
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#define DRIVER_AUTHOR "Qualcomm Inc"
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#define DRIVER_DESC "Qualcomm USB Serial driver"
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+#define QUECTEL_EC20_IDPRODUCT 0x9215
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+
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/* standard device layouts supported by this driver */
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enum qcserial_layouts {
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QCSERIAL_G2K = 0, /* Gobi 2000 */
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@@ -171,6 +173,38 @@ static const struct usb_device_id id_tab
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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+static int handle_quectel_ec20(struct device *dev, int ifnum)
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+{
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+ int altsetting = 0;
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+
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+ /*
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+ * Quectel EC20 Mini PCIe LTE module layout:
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+ * 0: DM/DIAG (use libqcdm from ModemManager for communication)
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+ * 1: NMEA
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+ * 2: AT-capable modem port
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+ * 3: Modem interface
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+ * 4: NDIS
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+ */
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+ switch (ifnum) {
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+ case 0:
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+ dev_dbg(dev, "Quectel EC20 DM/DIAG interface found\n");
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+ break;
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+ case 1:
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+ dev_dbg(dev, "Quectel EC20 NMEA GPS interface found\n");
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+ break;
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+ case 2:
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+ case 3:
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+ dev_dbg(dev, "Quectel EC20 Modem port found\n");
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+ break;
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+ case 4:
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+ /* Don't claim the QMI/net interface */
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+ altsetting = -1;
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+ break;
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+ }
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+
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+ return altsetting;
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+}
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+
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static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
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{
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struct usb_host_interface *intf = serial->interface->cur_altsetting;
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@@ -239,6 +273,11 @@ static int qcprobe(struct usb_serial *se
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altsetting = -1;
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break;
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case QCSERIAL_G2K:
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+ if (nintf == 5 && id->idProduct == QUECTEL_EC20_IDPRODUCT) {
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+ altsetting = handle_quectel_ec20(dev, ifnum);
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+ goto done;
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+ }
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+
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/*
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* Gobi 2K+ USB layout:
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* 0: QMI/net
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