summaryrefslogtreecommitdiffstats
path: root/tools/hid2hci.c
blob: 115e0ef5226738b79a963fead7d595ba95b1a415 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2003-2004  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  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;
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
 *  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
 *  CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *  ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
 *  COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
 *  SOFTWARE IS DISCLAIMED.
 *
 *
 *  $Id$
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <string.h>
#include <getopt.h>
#include <sys/ioctl.h>

#include <usb.h>

#ifdef NEED_USB_GET_BUSSES
static inline struct usb_bus *usb_get_busses(void)
{
	return usb_busses;
}
#endif

#ifndef USB_DIR_OUT
#define USB_DIR_OUT	0x00
#endif

static char devpath[PATH_MAX + 1] = "/dev";

struct hiddev_devinfo {
	unsigned int bustype;
	unsigned int busnum;
	unsigned int devnum;
	unsigned int ifnum;
	short vendor;
	short product;
	short version;
	unsigned num_applications;
};

struct hiddev_report_info {
	unsigned report_type;
	unsigned report_id;
	unsigned num_fields;
};

typedef __signed__ int __s32;

struct hiddev_usage_ref {
	unsigned report_type;
	unsigned report_id;
	unsigned field_index;
	unsigned usage_index;
	unsigned usage_code;
	__s32 value;
};

#define HIDIOCGDEVINFO		_IOR('H', 0x03, struct hiddev_devinfo)
#define HIDIOCINITREPORT	_IO('H', 0x05)
#define HIDIOCSREPORT		_IOW('H', 0x08, struct hiddev_report_info)
#define HIDIOCSUSAGE		_IOW('H', 0x0C, struct hiddev_usage_ref)

#define HID_REPORT_TYPE_OUTPUT	2

#define HCI 0
#define HID 1

struct device_info;

struct device_id {
	int mode;
	uint16_t vendor;
	uint16_t product;
	int (*func)(struct device_info *dev);
};

struct device_info {
	struct usb_device *dev;
	struct device_id *id;
};

static int switch_hidproxy(struct device_info *devinfo)
{
	struct usb_dev_handle *udev;
	int err;

	udev = usb_open(devinfo->dev);
	if (!udev)
		return -errno;

	err = usb_control_msg(udev, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
				0, devinfo->id->mode, 0, NULL, 0, 10000);

	if (err == 0) {
		err = -1;
		errno = EALREADY;
	} else {
		if (errno == ETIMEDOUT)
			err = 0;
	}

	usb_close(udev);

	return err;
}

static int send_report(int fd, const unsigned char *buf, size_t size)
{
	struct hiddev_report_info rinfo;
	struct hiddev_usage_ref uref;
	int i, err;

	for (i = 0; i < size; i++) {
		memset(&uref, 0, sizeof(uref));
		uref.report_type = HID_REPORT_TYPE_OUTPUT;
		uref.report_id   = 0x10;
		uref.field_index = 0;
		uref.usage_index = i;
		uref.usage_code  = 0xff000001;
		uref.value       = buf[i];
		err = ioctl(fd, HIDIOCSUSAGE, &uref);
		if (err < 0)
			return err;
	}

	memset(&rinfo, 0, sizeof(rinfo));
	rinfo.report_type = HID_REPORT_TYPE_OUTPUT;
	rinfo.report_id   = 0x10;
	rinfo.num_fields  = 1;
	err = ioctl(fd, HIDIOCSREPORT, &rinfo);

	return err;
}

static int switch_logitech(struct device_info *devinfo)
{
	char devname[PATH_MAX + 1];
	int i, fd, err = -1;

	for (i = 0; i < 16; i++) {
		struct hiddev_devinfo dinfo;
		char rep1[] = { 0xff, 0x80, 0x80, 0x01, 0x00, 0x00 };
		char rep2[] = { 0xff, 0x80, 0x00, 0x00, 0x30, 0x00 };
		char rep3[] = { 0xff, 0x81, 0x80, 0x00, 0x00, 0x00 };

		sprintf(devname, "%s/hiddev%d", devpath, i);
		fd = open(devname, O_RDWR);
		if (fd < 0) {
			sprintf(devname, "%s/usb/hiddev%d", devpath, i);
			fd = open(devname, O_RDWR);
			if (fd < 0) {
				sprintf(devname, "%s/usb/hid/hiddev%d", devpath, i);
				fd = open(devname, O_RDWR);
				if (fd < 0)
					continue;
			}
		}

		memset(&dinfo, 0, sizeof(dinfo));
		err = ioctl(fd, HIDIOCGDEVINFO, &dinfo);
		if (err < 0 || dinfo.busnum != atoi(devinfo->dev->bus->dirname) ||
				dinfo.devnum != atoi(devinfo->dev->filename)) {
			close(fd);
			continue;
		}

		err = ioctl(fd, HIDIOCINITREPORT, 0);
		if (err < 0) {
			close(fd);
			break;
		}

		err = send_report(fd, rep1, sizeof(rep1));
		if (err < 0) {
			close(fd);
			break;
		}

		err = send_report(fd, rep2, sizeof(rep2));
		if (err < 0) {
			close(fd);
			break;
		}

		err = send_report(fd, rep3, sizeof(rep3));
		close(fd);
		break;
	}

	return err;
}

static struct device_id device_list[] = {
	{ HCI, 0x0a12, 0x1000, switch_hidproxy },
	{ HID, 0x0a12, 0x0001, switch_hidproxy },
	{ HCI, 0x0458, 0x1000, switch_hidproxy },
	{ HID, 0x0458, 0x003f, switch_hidproxy },
	{ HCI, 0x05ac, 0x1000, switch_hidproxy },
	{ HID, 0x05ac, 0x8203, switch_hidproxy },
	{ HCI, 0x046d, 0xc703, switch_logitech },
	{ HCI, 0x046d, 0xc704, switch_logitech },
	{ HCI, 0x046d, 0xc705, switch_logitech },
	{ -1 }
};

static struct device_id *match_device(int mode, uint16_t vendor, uint16_t product)
{
	int i;

	for (i = 0; device_list[i].mode >= 0; i++) {
		if (mode != device_list[i].mode)
			continue;
		if (vendor == device_list[i].vendor &&
				product == device_list[i].product)
			return &device_list[i];
	}

	return NULL;
}

static int find_devices(int mode, struct device_info *devinfo, size_t size)
{
	struct usb_bus *bus;
	struct usb_device *dev;
	struct device_id *id;
	int count = 0;

	usb_find_busses();
	usb_find_devices();

	for (bus = usb_get_busses(); bus; bus = bus->next)
		for (dev = bus->devices; dev; dev = dev->next) {
			id = match_device(mode, dev->descriptor.idVendor,
						dev->descriptor.idProduct);
			if (!id)
				continue;

			if (count < size) {
				devinfo[count].dev = dev;
				devinfo[count].id = id;
				count++;
			}
		}

	return count;
}

static void usage(void)
{
	printf("hid2hci - Bluetooth HID to HCI mode switching utility\n\n");

	printf("Usage:\n"
		"\thid2hci [options]\n"
		"\n");

	printf("Options:\n"
		"\t-h, --help           Display help\n"
		"\t-q, --quiet          Don't display any messages\n"
		"\t-0, --tohci          Switch to HCI mode (default)\n"
		"\t-1, --tohid          Switch to HID mode\n"
		"\n");
}

static struct option main_options[] = {
	{ "help",	0, 0, 'h' },
	{ "quiet",	0, 0, 'q' },
	{ "tohci",	0, 0, '0' },
	{ "tohid",	0, 0, '1' },
	{ 0, 0, 0, 0 }
};

int main(int argc, char *argv[])
{
	struct device_info dev[16];
	int i, opt, num, quiet = 0, mode = HCI;

	while ((opt = getopt_long(argc, argv, "+01qh", main_options, NULL)) != -1) {
		switch (opt) {
		case '0':
			mode = HCI;
			break;
		case '1':
			mode = HID;
			break;
		case 'q':
			quiet = 1;
			break;
		case 'h':
			usage();
			exit(0);
		default:
			exit(0);
		}
	}

	argc -= optind;
	argv += optind;
	optind = 0;

	usb_init();

	num = find_devices(mode, dev, sizeof(dev) / sizeof(dev[0]));
	if (num <= 0) {
		if (!quiet)
			fprintf(stderr, "No devices in %s mode found\n",
							mode ? "HID" : "HCI");
		exit(1);
	}

	for (i = 0; i < num; i++) {
		struct device_id *id = dev[i].id;

		if (!quiet)
			printf("Switching device %04x:%04x to %s mode ",
				id->vendor, id->product, mode ? "HID" : "HCI");
		fflush(stdout);

		if (id->func(&dev[i]) < 0) {
			if (!quiet)
				printf("failed (%s)\n", strerror(errno));
		} else {
			if (!quiet)
				printf("was successful\n");
		}
	}

	return 0;
}