/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2003-2010 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 as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#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 usb_device *dev;
int mode;
uint16_t vendor;
uint16_t product;
};
static int switch_csr(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->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 char *buf, size_t size)
{
struct hiddev_report_info rinfo;
struct hiddev_usage_ref uref;
unsigned int i;
int 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] & 0x000000ff;
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 || (int) dinfo.busnum != atoi(devinfo->dev->bus->dirname) ||
(int) 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 int switch_dell(struct device_info *devinfo)
{
char report[] = { 0x7f, 0x00, 0x00, 0x00 };
struct usb_dev_handle *handle;
int err;
switch (devinfo->mode) {
case HCI:
report[1] = 0x13;
break;
case HID:
report[1] = 0x14;
break;
}
handle = usb_open(devinfo->dev);
if (!handle)
return -EIO;
/* Don't need to check return, as might not be in use */
usb_detach_kernel_driver_np(handle, 0);
if (usb_claim_interface(handle, 0) < 0) {
usb_close(handle);
return -EIO;
}
err = usb_control_msg(handle,
USB_ENDPOINT_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
USB_REQ_SET_CONFIGURATION, 0x7f | (0x03 << 8), 0,
report, sizeof(report), 5000);
if (err == 0) {
err = -1;
errno = EALREADY;
} else {
if (errno == ETIMEDOUT)
err = 0;
}
usb_close(handle);
return err;
}
static int find_device(struct device_info* devinfo)
{
struct usb_bus *bus;
struct usb_device *dev;
usb_find_busses();
usb_find_devices();
for (bus = usb_get_busses(); bus; bus = bus->next)
for (dev = bus->devices; dev; dev = dev->next) {
if (dev->descriptor.idVendor == devinfo->vendor &&
dev->descriptor.idProduct == devinfo->product) {
devinfo->dev=dev;
return 1;
}
}
return 0;
}
static void usage(char* error)
{
if (error)
fprintf(stderr,"\n%s\n", error);
else
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-r, --mode= Mode to switch to [hid, hci]\n"
"\t-v, --vendor= Vendor ID to act upon\n"
"\t-p, --product= Product ID to act upon\n"
"\t-m, --method= Method to use to switch [csr, logitech, dell]\n"
"\n");
if (error)
exit(1);
}
static struct option main_options[] = {
{ "help", no_argument, 0, 'h' },
{ "quiet", no_argument, 0, 'q' },
{ "mode", required_argument, 0, 'r' },
{ "vendor", required_argument, 0, 'v' },
{ "product", required_argument, 0, 'p' },
{ "method", required_argument, 0, 'm' },
{ 0, 0, 0, 0 }
};
int main(int argc, char *argv[])
{
struct device_info dev = { NULL, HCI, 0, 0 };
int opt, quiet = 0;
int (*method)(struct device_info *dev) = NULL;
while ((opt = getopt_long(argc, argv, "+r:v:p:m:qh", main_options, NULL)) != -1) {
switch (opt) {
case 'r':
if (optarg && !strcmp(optarg, "hid"))
dev.mode = HID;
else if (optarg && !strcmp(optarg, "hci"))
dev.mode = HCI;
else
usage("ERROR: Undefined radio mode\n");
break;
case 'v':
sscanf(optarg, "%4hx", &dev.vendor);
break;
case 'p':
sscanf(optarg, "%4hx", &dev.product);
break;
case 'm':
if (optarg && !strcmp(optarg, "csr"))
method = switch_csr;
else if (optarg && !strcmp(optarg, "logitech"))
method = switch_logitech;
else if (optarg && !strcmp(optarg, "dell"))
method = switch_dell;
else
usage("ERROR: Undefined switching method\n");
break;
case 'q':
quiet = 1;
break;
case 'h':
usage(NULL);
default:
exit(0);
}
}
if (!quiet && (!dev.vendor || !dev.product || !method))
usage("ERROR: Vendor ID, Product ID, and Switching Method must all be defined.\n");
argc -= optind;
argv += optind;
optind = 0;
usb_init();
if (!find_device(&dev)) {
if (!quiet)
fprintf(stderr, "Device %04x:%04x not found on USB bus.\n",
dev.vendor, dev.product);
exit(1);
}
if (!quiet)
printf("Attempting to switch device %04x:%04x to %s mode ",
dev.vendor, dev.product, dev.mode ? "HID" : "HCI");
fflush(stdout);
if (method(&dev) < 0 && !quiet)
printf("failed (%s)\n", strerror(errno));
else if (!quiet)
printf("was successful\n");
return errno;
}