USB: add new moto_modem driver for some Morotola phones

This should work on a KRZR K1m, and some other Motorola phones that do
not use the "standard" cdc ACM protocol to talk to USB hosts.

Tested-by: Jeff Garzik <jeff@garzik.org>
Cc: Jiang Dejun <a5652c@motorola.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 80 insertions, 0 deletions

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 2cffec85ee7e..9ba64ccc1359 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -447,6 +447,15 @@ config USB_SERIAL_MOS7840
 	  To compile this driver as a module, choose M here: the
 	  module will be called mos7840.  If unsure, choose N.
 
+config USB_SERIAL_MOTOROLA
+	tristate "USB Motorola Phone modem driver"
+	---help---
+	  Say Y here if you want to use a Motorola phone with a USB
+	  connector as a modem link.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called moto_modem.  If unsure, choose N.
+
 config USB_SERIAL_NAVMAN
 	tristate "USB Navman GPS device"
 	help
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 756859510d8c..17a762ab6769 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -39,6 +39,7 @@ obj-$(CONFIG_USB_SERIAL_KOBIL_SCT)		+= kobil_sct.o
 obj-$(CONFIG_USB_SERIAL_MCT_U232)		+= mct_u232.o
 obj-$(CONFIG_USB_SERIAL_MOS7720)		+= mos7720.o
 obj-$(CONFIG_USB_SERIAL_MOS7840)		+= mos7840.o
+obj-$(CONFIG_USB_SERIAL_MOTOROLA)		+= moto_modem.o
 obj-$(CONFIG_USB_SERIAL_NAVMAN)			+= navman.o
 obj-$(CONFIG_USB_SERIAL_OMNINET)		+= omninet.o
 obj-$(CONFIG_USB_SERIAL_OPTION)			+= option.o
diff --git a/drivers/usb/serial/moto_modem.c b/drivers/usb/serial/moto_modem.c
new file mode 100644
index 000000000000..2e8e05462ef7
--- /dev/null
+++ b/drivers/usb/serial/moto_modem.c
@@ -0,0 +1,70 @@
+/*
+ * Motorola USB Phone driver
+ *
+ * Copyright (C) 2008 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ *  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.
+ *
+ * {sigh}
+ * Mororola should be using the CDC ACM USB spec, but instead
+ * they try to just "do their own thing"...  This driver should handle a
+ * few phones in which a basic "dumb serial connection" is needed to be
+ * able to get a connection through to them.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+static struct usb_device_id id_table [] = {
+	{ USB_DEVICE(0x05c6, 0x3197) },	/* unknown Motorola phone */
+	{ USB_DEVICE(0x0c44, 0x0022) },	/* unknown Mororola phone */
+	{ USB_DEVICE(0x22b8, 0x2a64) },	/* Motorola KRZR K1m */
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver moto_driver = {
+	.name =		"moto-modem",
+	.probe =	usb_serial_probe,
+	.disconnect =	usb_serial_disconnect,
+	.id_table =	id_table,
+	.no_dynamic_id = 	1,
+};
+
+static struct usb_serial_driver moto_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"moto-modem",
+	},
+	.id_table =		id_table,
+	.num_ports =		1,
+};
+
+static int __init moto_init(void)
+{
+	int retval;
+
+	retval = usb_serial_register(&moto_device);
+	if (retval)
+		return retval;
+	retval = usb_register(&moto_driver);
+	if (retval)
+		usb_serial_deregister(&moto_device);
+	return retval;
+}
+
+static void __exit moto_exit(void)
+{
+	usb_deregister(&moto_driver);
+	usb_serial_deregister(&moto_device);
+}
+
+module_init(moto_init);
+module_exit(moto_exit);
+MODULE_LICENSE("GPL");