774f78cf3b
I was testing the berry_charge module with my Blackberry 8700c and had great success, thanks. Looking at the code for my own learning I noticed the following cut and paste error... just a nit. Signed-off-by: Ken L Johnson <ken@novell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/*
|
|
* 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 second 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");
|