projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| df23fa01 GKH |
1 | /* |
| 2 | * USB BlackBerry charging module | |
| 3 | * | |
| 4 | * Copyright (C) 2007 Greg Kroah-Hartman <gregkh@suse.de> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License as | |
| 8 | * published by the Free Software Foundation, version 2. | |
| 9 | * | |
| 10 | * Information on how to switch configs was taken by the bcharge.cc file | |
| 11 | * created by the barry.sf.net project. | |
| 12 | * | |
| 13 | * bcharge.cc has the following copyright: | |
| 14 | * Copyright (C) 2006, Net Direct Inc. (http://www.netdirect.ca/) | |
| 15 | * and is released under the GPLv2. | |
| 16 | * | |
| 17 | * | |
| 18 | */ | |
| 19 | ||
| 20 | #include <linux/kernel.h> | |
| 21 | #include <linux/errno.h> | |
| 22 | #include <linux/init.h> | |
| 23 | #include <linux/slab.h> | |
| 24 | #include <linux/module.h> | |
| 25 | #include <linux/usb.h> | |
| 26 | ||
| 27 | #define RIM_VENDOR 0x0fca | |
| 28 | #define BLACKBERRY 0x0001 | |
| 29 | ||
| 30 | static int debug; | |
| 31 | ||
| 32 | #ifdef dbg | |
| 33 | #undef dbg | |
| 34 | #endif | |
| 35 | #define dbg(dev, format, arg...) \ | |
| 36 | if (debug) \ | |
| 37 | dev_printk(KERN_DEBUG , dev , format , ## arg) | |
| 38 | ||
| 39 | static struct usb_device_id id_table [] = { | |
| 40 | { USB_DEVICE(RIM_VENDOR, BLACKBERRY) }, | |
| 41 | { }, /* Terminating entry */ | |
| 42 | }; | |
| 43 | MODULE_DEVICE_TABLE(usb, id_table); | |
| 44 | ||
| 45 | static int magic_charge(struct usb_device *udev) | |
| 46 | { | |
| 47 | char *dummy_buffer = kzalloc(2, GFP_KERNEL); | |
| 48 | int retval; | |
| 49 | ||
| 50 | if (!dummy_buffer) | |
| 51 | return -ENOMEM; | |
| 52 | ||
| 53 | /* send two magic commands and then set the configuration. The device | |
| 54 | * will then reset itself with the new power usage and should start | |
| 55 | * charging. */ | |
| 56 | ||
| 57 | /* Note, with testing, it only seems that the first message is really | |
| 58 | * needed (at least for the 8700c), but to be safe, we emulate what | |
| 59 | * other operating systems seem to be sending to their device. We | |
| 60 | * really need to get some specs for this device to be sure about what | |
| 61 | * is going on here. | |
| 62 | */ | |
| 63 | dbg(&udev->dev, "Sending first magic command\n"); | |
| 64 | retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), | |
| 65 | 0xa5, 0xc0, 0, 1, dummy_buffer, 2, 100); | |
| 66 | if (retval != 2) { | |
| 67 | dev_err(&udev->dev, "First magic command failed: %d.\n", | |
| 68 | retval); | |
| 69 | return retval; | |
| 70 | } | |
| 71 | ||
| 774f78cf | 72 | dbg(&udev->dev, "Sending second magic command\n"); |
| df23fa01 GKH |
73 | retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), |
| 74 | 0xa2, 0x40, 0, 1, dummy_buffer, 0, 100); | |
| 75 | if (retval != 0) { | |
| 76 | dev_err(&udev->dev, "Second magic command failed: %d.\n", | |
| 77 | retval); | |
| 78 | return retval; | |
| 79 | } | |
| 80 | ||
| 81 | dbg(&udev->dev, "Calling set_configuration\n"); | |
| 82 | retval = usb_driver_set_configuration(udev, 1); | |
| 83 | if (retval) | |
| 84 | dev_err(&udev->dev, "Set Configuration failed :%d.\n", retval); | |
| 85 | ||
| 86 | return retval; | |
| 87 | } | |
| 88 | ||
| 89 | static int berry_probe(struct usb_interface *intf, | |
| 90 | const struct usb_device_id *id) | |
| 91 | { | |
| 92 | struct usb_device *udev = interface_to_usbdev(intf); | |
| 93 | ||
| 94 | dbg(&udev->dev, "Power is set to %dmA\n", | |
| 95 | udev->actconfig->desc.bMaxPower * 2); | |
| 96 | ||
| 97 | /* check the power usage so we don't try to enable something that is | |
| 98 | * already enabled */ | |
| 99 | if ((udev->actconfig->desc.bMaxPower * 2) == 500) { | |
| 100 | dbg(&udev->dev, "device is already charging, power is " | |
| 101 | "set to %dmA\n", udev->actconfig->desc.bMaxPower * 2); | |
| 102 | return -ENODEV; | |
| 103 | } | |
| 104 | ||
| 105 | /* turn the power on */ | |
| 106 | magic_charge(udev); | |
| 107 | ||
| 108 | /* we don't really want to bind to the device, userspace programs can | |
| 109 | * handle the syncing just fine, so get outta here. */ | |
| 110 | return -ENODEV; | |
| 111 | } | |
| 112 | ||
| 113 | static void berry_disconnect(struct usb_interface *intf) | |
| 114 | { | |
| 115 | } | |
| 116 | ||
| 117 | static struct usb_driver berry_driver = { | |
| 118 | .name = "berry_charge", | |
| 119 | .probe = berry_probe, | |
| 120 | .disconnect = berry_disconnect, | |
| 121 | .id_table = id_table, | |
| 122 | }; | |
| 123 | ||
| 124 | static int __init berry_init(void) | |
| 125 | { | |
| 126 | return usb_register(&berry_driver); | |
| 127 | } | |
| 128 | ||
| 129 | static void __exit berry_exit(void) | |
| 130 | { | |
| 131 | usb_deregister(&berry_driver); | |
| 132 | } | |
| 133 | ||
| 134 | module_init(berry_init); | |
| 135 | module_exit(berry_exit); | |
| 136 | ||
| 137 | MODULE_LICENSE("GPL"); | |
| 138 | MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>"); | |
| 139 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
| 140 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |