3 /// Talk to the Blackberry just enough to change the Max Power
4 /// to 500mA. Cycles through all devices attached to USB,
5 /// attempting to set all matching Blackberry devices to charge.
7 /// This file is part of the Barry project:
9 /// http://www.netdirect.ca/software/packages/barry/index.php
10 /// http://sourceforge.net/projects/barry
12 /// Compile with the following command (needs libusb):
14 /// g++ -o bcharge bcharge.cc -lusb
18 Copyright (C) 2006-2009, Net Direct Inc. (http://www.netdirect.ca/)
20 This program is free software; you can redistribute it and/or modify
21 it under the terms of the GNU General Public License as published by
22 the Free Software Foundation; either version 2 of the License, or
23 (at your option) any later version.
25 This program is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
29 See the GNU General Public License in the COPYING file at the
30 root directory of this project for more details.
38 #include <sys/types.h>
42 #include <barry/common.h>
44 bool old_style_pearl
= false;
45 bool force_dual
= false;
46 std::string udev_devpath
;
47 std::string sysfs_path
= "/sys";
52 "bcharge - Adjust Blackberry charging modes\n"
53 " Copyright 2006-2009, Net Direct Inc. (http://www.netdirect.ca/)\n"
55 " -d Dual mode (mode 0004) (default)\n"
56 " -o Set a Pearl to old Blackberry mode (0001)\n"
58 " -h This help message\n"
59 " -p devpath The devpath argument from udev. If specified, will attempt\n"
60 " to adjust USB suspend settings to keep the device charging.\n"
61 " -s path The path where sysfs is mounted. Defaults to '/sys'\n"
66 void control(usb_dev_handle
*dev
, int requesttype
, int request
, int value
,
67 int index
, char *bytes
, int size
, int timeout
)
69 int result
= usb_control_msg(dev
, requesttype
, request
, value
, index
,
70 bytes
, size
, timeout
);
72 printf("\nusb_control_msg failed: code: %d, %s\n", result
,
77 void charge(struct usb_dev_handle
*handle
)
79 // the special sauce... these steps seem to do the trick
80 // for the 7750 series... needs testing on others
82 control(handle
, 0xc0, 0xa5, 0, 1, buffer
, 2, 100);
83 control(handle
, 0x40, 0xa2, 0, 1, buffer
, 0, 100);
86 void pearl_mode(struct usb_dev_handle
*handle
)
89 if( old_style_pearl
) {
90 // use this for "old style" interface: product ID 0001
91 control(handle
, 0xc0, 0xa9, 0, 1, buffer
, 2, 100);
95 control(handle
, 0xc0, 0xa9, 1, 1, buffer
, 2, 100);
99 int find_mass_storage_interface(struct usb_dev_handle
*handle
)
101 // search the configuration descriptor for a Mass Storage
102 // interface (class 8)
103 struct usb_device
*dev
= usb_device(handle
);
104 struct usb_config_descriptor
*cfg
= dev
? dev
->config
: 0;
108 for( unsigned i
= 0; cfg
->interface
&& i
< cfg
->bNumInterfaces
; i
++ ) {
109 struct usb_interface
*iface
= &cfg
->interface
[i
];
110 for( int a
= 0; iface
->altsetting
&& a
< iface
->num_altsetting
; a
++ ) {
111 struct usb_interface_descriptor
*id
= &iface
->altsetting
[a
];
112 if( id
->bInterfaceClass
== USB_CLASS_MASS_STORAGE
)
113 return id
->bInterfaceNumber
;
118 // if we get here, then we didn't find the Mass Storage interface
119 // ... this should never happen, but if it does, assume
120 // the device is s showing product ID 0006, and the Mass Storage
121 // interface is interface #0
122 printf("Can't find Mass Storage interface, assuming 0.\n");
126 void driver_conflict(struct usb_dev_handle
*handle
)
128 // this is called if the first usb_set_configuration()
129 // failed... this most probably means that usb_storage
130 // has already claimed the Mass Storage interface,
131 // in which case we politely tell it to away.
133 #if LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP
134 printf("Detecting possible kernel driver conflict, trying to resolve...\n");
136 int iface
= find_mass_storage_interface(handle
);
137 if( usb_detach_kernel_driver_np(handle
, iface
) < 0 )
138 printf("usb_detach_kernel_driver_np() failed: %s\n", usb_strerror());
140 if( usb_set_configuration(handle
, BLACKBERRY_CONFIGURATION
) < 0 )
141 printf("usb_set_configuration() failed: %s\n", usb_strerror());
145 // returns true if device mode was modified, false otherwise
146 bool process(struct usb_device
*dev
, bool is_pearl
)
149 printf("Found device #%s...", dev
->filename
);
152 usb_dev_handle
*handle
= usb_open(dev
);
154 printf("unable to open device\n");
160 dev
->descriptor
.bNumConfigurations
>= 1 &&
161 dev
->config
[0].MaxPower
< 250 ) {
162 printf("adjusting charge setting");
167 printf("already at 500mA");
171 if( is_pearl
|| force_dual
) {
172 int desired_mode
= old_style_pearl
173 ? PRODUCT_RIM_BLACKBERRY
: PRODUCT_RIM_PEARL_DUAL
;
175 if( desired_mode
!= dev
->descriptor
.idProduct
) {
176 printf("...adjusting Pearl mode to %s",
177 old_style_pearl
? "single" : "dual");
182 printf("...already in desired Pearl mode");
186 printf("...no Pearl adjustment");
191 if( usb_set_configuration(handle
, BLACKBERRY_CONFIGURATION
) < 0 )
192 driver_conflict(handle
);
194 // the Blackberry Pearl doesn't reset itself after the above,
195 // so do it ourselves
196 if( is_pearl
|| force_dual
) {
198 // It has been observed that the 8830 behaves both like
199 // a Pearl device (in that it has mass storage +
200 // database modes) as well as a Classic device in
201 // that it resets itself and doesn't need an explicit
204 // In order to deal with this, we insert a brief sleep.
205 // If it is an 8830, it will reset itself and the
206 // following reset call will fail. If it is a Pearl,
207 // the reset will work as normal.
210 if( usb_reset(handle
) < 0 ) {
211 printf("\nusb_reset failed: %s\n", usb_strerror());
218 printf("...no change\n");
226 bool power_write(const std::string
&file
, const std::string
&value
)
228 // attempt to open the state file
229 int fd
= open(file
.c_str(), O_RDWR
);
231 printf("autosuspend adjustment failure: (file: %s): %s\n",
237 int written
= write(fd
, value
.data(), value
.size());
241 if( written
< 0 || (size_t)written
!= value
.size() ) {
242 printf("autosuspend adjustment failure (write): (file: %s): %s\n",
248 printf("autosuspend adjustment: wrote %s to %s\n",
249 value
.c_str(), file
.c_str());
254 // Checks for USB suspend, and enables the device if suspended.
256 // Kernel 2.6.21 behaves with autosuspend=0 meaning off, while 2.6.22
257 // and higher needs autosuspend=-1 to turn it off. In 2.6.22, a value
258 // of 0 means "immediate" instead of "never".
260 // Version 2.6.22 adds variables internal to the system called
261 // autosuspend_disabled and autoresume_disabled. These are controlled by the
262 // /sys/class/usb_device/*/device/power/level file. (See below)
264 // Here's a summary of files under device/power. These may or may not exist
265 // depending on your kernel version and configuration.
269 // -1 or 0 means off, depending on kernel,
270 // otherwise it is the number of seconds to
274 // with the settings:
276 // on - suspend is disabled, device is fully powered
277 // auto - suspend is controlled by the kernel (default)
278 // suspend - suspend is enabled permanently
280 // You can write these strings to the file to control
281 // behaviour on a per-device basis.
283 // echo on > /sys/usb_device/.../device/power/level
286 // current state of device
290 // You can write these numbers to control behaviour, but
291 // any change you make here might change automatically
292 // if autosuspend is on.
294 // echo -n 0 > /sys/usb_device/.../device/power/state
300 // Given the above facts, use the following heuristics to try to disable
301 // autosuspend for the Blackberry:
303 // - if level exists, write "on" to it
304 // - if autosuspend exists, write -1 to it
305 // - if error, write 0 to it
306 // - if neither of the above work, and state exists, write 0 to it
310 if( udev_devpath
.size() == 0 )
311 return; // nothing to do
313 // let sysfs settle a bit
316 std::string power_path
= sysfs_path
+ "/" + udev_devpath
+ "/device/power/";
318 if( !power_write(power_path
+ "level", "on\n") )
319 if( !power_write(power_path
+ "autosuspend", "-1\n") )
320 if( !power_write(power_path
+ "autosuspend", "0\n") )
321 power_write(power_path
+ "state", "0");
324 int main(int argc
, char *argv
[])
326 struct usb_bus
*busses
;
329 // allow -o command line switch to choose which mode to use for
330 // Blackberry Pearls:
331 // Dual(default): 0004 -d
332 // With switch: 0001 -o
335 // process command line options
337 int cmd
= getopt(argc
, argv
, "dop:s:h");
343 case 'd': // Dual (default)
345 old_style_pearl
= false;
348 case 'o': // Old style pearl
350 old_style_pearl
= true;
353 case 'p': // udev devpath
354 udev_devpath
= optarg
;
357 case 's': // where sysfs is mounted
369 if( usb_find_busses() < 0 || usb_find_devices() < 0 ) {
370 printf("\nUnable to scan devices: %s\n", usb_strerror());
373 busses
= usb_get_busses();
375 printf("Scanning for Blackberry devices...\n");
378 for( bus
= busses
; bus
; bus
= bus
->next
) {
379 struct usb_device
*dev
;
381 for (dev
= bus
->devices
; dev
; dev
= dev
->next
) {
382 // Is this a blackberry?
383 if( dev
->descriptor
.idVendor
== VENDOR_RIM
) {
384 switch(dev
->descriptor
.idProduct
)
386 case PRODUCT_RIM_BLACKBERRY
:
387 if( !process(dev
, false) )
391 case PRODUCT_RIM_PEARL_DUAL
:
392 case PRODUCT_RIM_PEARL
:
393 case PRODUCT_RIM_PEARL_8120
:
394 case PRODUCT_RIM_STORM
:
395 if( !process(dev
, true) )