3 files changed, 152 insertions, 0 deletions

diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index a74bf8617e7f..4907e8b80070 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -88,6 +88,17 @@ config USB_LCD
 	  To compile this driver as a module, choose M here: the
 	  module will be called usblcd.
 
+config USB_BERRY_CHARGE
+	tristate "USB BlackBerry recharge support"
+	depends on USB
+	help
+	  Say Y here if you want to connect a BlackBerry device to your
+	  computer's USB port and have it automatically switch to "recharge"
+	  mode.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called berry_charge.
+
 config USB_LED
 	tristate "USB LED driver support"
 	depends on USB
diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile
index 2cba07d31971..dac2d5b71566 100644
--- a/drivers/usb/misc/Makefile
+++ b/drivers/usb/misc/Makefile
@@ -6,6 +6,7 @@
 obj-$(CONFIG_USB_ADUTUX)	+= adutux.o
 obj-$(CONFIG_USB_APPLEDISPLAY)	+= appledisplay.o
 obj-$(CONFIG_USB_AUERSWALD)	+= auerswald.o
+obj-$(CONFIG_USB_BERRY_CHARGE)	+= berry_charge.o
 obj-$(CONFIG_USB_CYPRESS_CY7C63)+= cypress_cy7c63.o
 obj-$(CONFIG_USB_CYTHERM)	+= cytherm.o
 obj-$(CONFIG_USB_EMI26)		+= emi26.o
diff --git a/drivers/usb/misc/berry_charge.c b/drivers/usb/misc/berry_charge.c
new file mode 100644
index 000000000000..60893c6c8221
--- /dev/null
+++ b/drivers/usb/misc/berry_charge.c
@@ -0,0 +1,140 @@
+/*
+ * USB BlackBerry charging module
+ *
+ * Copyright (C) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License as
+ *	published by the Free Software Foundation, version 2.
+ *
+ * Information on how to switch configs was taken by the bcharge.cc file
+ * created by the barry.sf.net project.
+ *
+ * bcharge.cc has the following copyright:
+ * 	Copyright (C) 2006, Net Direct Inc. (http://www.netdirect.ca/)
+ * and is released under the GPLv2.
+ *
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#define RIM_VENDOR		0x0fca
+#define BLACKBERRY		0x0001
+
+static int debug;
+
+#ifdef dbg
+#undef dbg
+#endif
+#define dbg(dev, format, arg...)				\
+	if (debug)						\
+		dev_printk(KERN_DEBUG , dev , format , ## arg)
+
+static struct usb_device_id id_table [] = {
+	{ USB_DEVICE(RIM_VENDOR, BLACKBERRY) },
+	{ },					/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static int magic_charge(struct usb_device *udev)
+{
+	char *dummy_buffer = kzalloc(2, GFP_KERNEL);
+	int retval;
+
+	if (!dummy_buffer)
+		return -ENOMEM;
+
+	/* send two magic commands and then set the configuration.  The device
+	 * will then reset itself with the new power usage and should start
+	 * charging. */
+
+	/* Note, with testing, it only seems that the first message is really
+	 * needed (at least for the 8700c), but to be safe, we emulate what
+	 * other operating systems seem to be sending to their device.  We
+	 * really need to get some specs for this device to be sure about what
+	 * is going on here.
+	 */
+	dbg(&udev->dev, "Sending first magic command\n");
+	retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+				 0xa5, 0xc0, 0, 1, dummy_buffer, 2, 100);
+	if (retval != 2) {
+		dev_err(&udev->dev, "First magic command failed: %d.\n",
+			retval);
+		return retval;
+	}
+
+	dbg(&udev->dev, "Sending first magic command\n");
+	retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+				 0xa2, 0x40, 0, 1, dummy_buffer, 0, 100);
+	if (retval != 0) {
+		dev_err(&udev->dev, "Second magic command failed: %d.\n",
+			retval);
+		return retval;
+	}
+
+	dbg(&udev->dev, "Calling set_configuration\n");
+	retval = usb_driver_set_configuration(udev, 1);
+	if (retval)
+		dev_err(&udev->dev, "Set Configuration failed :%d.\n", retval);
+
+	return retval;
+}
+
+static int berry_probe(struct usb_interface *intf,
+		       const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+
+	dbg(&udev->dev, "Power is set to %dmA\n",
+	    udev->actconfig->desc.bMaxPower * 2);
+
+	/* check the power usage so we don't try to enable something that is
+	 * already enabled */
+	if ((udev->actconfig->desc.bMaxPower * 2) == 500) {
+		dbg(&udev->dev, "device is already charging, power is "
+		    "set to %dmA\n", udev->actconfig->desc.bMaxPower * 2);
+		return -ENODEV;
+	}
+
+	/* turn the power on */
+	magic_charge(udev);
+
+	/* we don't really want to bind to the device, userspace programs can
+	 * handle the syncing just fine, so get outta here. */
+	return -ENODEV;
+}
+
+static void berry_disconnect(struct usb_interface *intf)
+{
+}
+
+static struct usb_driver berry_driver = {
+	.name =		"berry_charge",
+	.probe =	berry_probe,
+	.disconnect =	berry_disconnect,
+	.id_table =	id_table,
+};
+
+static int __init berry_init(void)
+{
+	return usb_register(&berry_driver);
+}
+
+static void __exit berry_exit(void)
+{
+	usb_deregister(&berry_driver);
+}
+
+module_init(berry_init);
+module_exit(berry_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>");
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");