Driver originally written by Qualcomm, but rewritten by me due to the
totally different coding style. Cleaned up the probe logic to make a
bit more sense, this is one wierd device. They could have prevented all
of this by just writing sane firmware for the modem.
Cc: Tamm Liu <tamml@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/serial/Kconfig | 9 +++
drivers/usb/serial/Makefile | 1 +
drivers/usb/serial/qcserial.c | 145 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 155 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/serial/qcserial.c
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index dbc0781..4afe73e 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -472,6 +472,15 @@ config USB_SERIAL_OTI6858
To compile this driver as a module, choose M here: the
module will be called oti6858.
+config USB_SERIAL_QUALCOMM
+ tristate "USB Qualcomm Serial modem"
+ help
+ Say Y here if you have a Qualcomm USB modem device. These are
+ usually wireless cellular modems.
+
+ To compile this driver as a module, choose M here: the
+ module will be called qcserial.
+
config USB_SERIAL_SPCP8X5
tristate "USB SPCP8x5 USB To Serial Driver"
help
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 2229397..94043ba 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -45,6 +45,7 @@ obj-$(CONFIG_USB_SERIAL_OPTICON) += opticon.o
obj-$(CONFIG_USB_SERIAL_OPTION) += option.o
obj-$(CONFIG_USB_SERIAL_OTI6858) += oti6858.o
obj-$(CONFIG_USB_SERIAL_PL2303) += pl2303.o
+obj-$(CONFIG_USB_SERIAL_QUALCOMM) += qcserial.o
obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI) += siemens_mpi.o
obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS) += sierra.o
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
new file mode 100644
index 0000000..6c6add5
--- /dev/null
+++ b/drivers/usb/serial/qcserial.c
@@ -0,0 +1,145 @@
+/*
+ * Qualcomm Serial USB driver
+ *
+ * Copyright (c) 2008 QUALCOMM Incorporated.
+ * Copyright (c) 2009 Greg Kroah-Hartman <gregkh@xxxxxxx>
+ * Copyright (c) 2009 Novell Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+#define DRIVER_AUTHOR "Qualcomm Inc"
+#define DRIVER_DESC "Qualcomm USB Serial driver"
+
+static int debug;
+
+static struct usb_device_id id_table[] = {
+ {USB_DEVICE(0x05c6, 0x9211)}, /* Acer Gobi QDL device */
+ {USB_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver qcdriver = {
+ .name = "qcserial",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+ .suspend = usb_serial_suspend,
+ .resume = usb_serial_resume,
+ .supports_autosuspend = true,
+};
+
+static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+{
+ int retval = -ENODEV;
+ __u8 nintf;
+ __u8 ifnum;
+
+ dbg("%s", __func__);
+
+ nintf = serial->dev->actconfig->desc.bNumInterfaces;
+ dbg("Num Interfaces = %d", nintf);
+ ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
+ dbg("This Interface = %d", ifnum);
+
+ switch (nintf) {
+ case 1:
+ /* QDL mode */
+ if (serial->interface->num_altsetting == 2) {
+ struct usb_host_interface *intf;
+
+ intf = &serial->interface->altsetting[1];
+ if (intf->desc.bNumEndpoints == 2) {
+ if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
+ usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
+ dbg("QDL port found");
+ retval = usb_set_interface(serial->dev, ifnum, 1);
+ if (retval < 0) {
+ dev_err(&serial->dev->dev,
+ "Could not set interface, error %d\n",
+ retval);
+ retval = -ENODEV;
+ }
+ return retval;
+ }
+ }
+ }
+ break;
+
+ case 4:
+ /* Composite mode */
+ if (ifnum == 2) {
+ dbg("Modem port found");
+ retval = usb_set_interface(serial->dev, ifnum, 0);
+ if (retval < 0) {
+ dev_err(&serial->dev->dev,
+ "Could not set interface, error %d\n",
+ retval);
+ retval = -ENODEV;
+ }
+ return retval;
+ }
+ break;
+
+ default:
+ dev_err(&serial->dev->dev,
+ "unknown number of interfaces: %d\n", nintf);
+ return -ENODEV;
+ }
+
+ return retval;
+}
+
+static struct usb_serial_driver qcdevice = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "qcserial",
+ },
+ .description = "Qualcomm USB modem",
+ .id_table = id_table,
+ .usb_driver = &qcdriver,
+ .num_ports = 1,
+ .probe = qcprobe,
+};
+
+static int __init qcinit(void)
+{
+ int retval;
+
+ retval = usb_serial_register(&qcdevice);
+ if (retval)
+ return retval;
+
+ retval = usb_register(&qcdriver);
+ if (retval) {
+ usb_serial_deregister(&qcdevice);
+ return retval;
+ }
+
+ return 0;
+}
+
+static void __exit qcexit(void)
+{
+ usb_deregister(&qcdriver);
+ usb_serial_deregister(&qcdevice);
+}
+
+module_init(qcinit);
+module_exit(qcexit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
--
1.6.2
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