--- /dev/null
+/*
+ *
+ * hid2hci : a tool for switching the radio on devices that support
+ * it from HID to HCI and back
+ *
+ * Copyright (C) 2003-2009 Marcel Holtmann <marcel@holtmann.org>
+ * Copyright (C) 2008-2009 Mario Limonciello <mario_limonciello@dell.com>
+ *
+ * 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 const 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;
+}
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