+++ /dev/null
-/*
- * hid2hci : switch the radio on devices that support
- * it from HID to HCI and back
- *
- * Copyright (C) 2003-2010 Marcel Holtmann <marcel@holtmann.org>
- * Copyright (C) 2008-2009 Mario Limonciello <mario_limonciello@dell.com>
- * Copyright (C) 2009-2011 Kay Sievers <kay.sievers@vrfy.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
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <string.h>
-#include <getopt.h>
-#include <sys/ioctl.h>
-#include <linux/types.h>
-#include <linux/hiddev.h>
-#include <usb.h>
-
-#include "libudev.h"
-
-enum mode {
- HCI = 0,
- HID = 1,
-};
-
-static int usb_switch_csr(struct usb_dev_handle *dev, enum mode mode)
-{
- int err;
-
- err = usb_control_msg(dev,
- USB_ENDPOINT_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0, mode, 0, NULL, 0, 10000);
- if (err == 0) {
- err = -1;
- errno = EALREADY;
- } else {
- if (errno == ETIMEDOUT)
- err = 0;
- }
- return err;
-}
-
-static int hid_logitech_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 hid_switch_logitech(const char *filename)
-{
- char rep1[] = { 0xff, 0x80, 0x80, 0x01, 0x00, 0x00 };
- char rep2[] = { 0xff, 0x80, 0x00, 0x00, 0x30, 0x00 };
- char rep3[] = { 0xff, 0x81, 0x80, 0x00, 0x00, 0x00 };
- int fd;
- int err = -1;
-
- fd = open(filename, O_RDWR);
- if (fd < 0)
- return err;
-
- err = ioctl(fd, HIDIOCINITREPORT, 0);
- if (err < 0)
- goto out;
-
- err = hid_logitech_send_report(fd, rep1, sizeof(rep1));
- if (err < 0)
- goto out;
-
- err = hid_logitech_send_report(fd, rep2, sizeof(rep2));
- if (err < 0)
- goto out;
-
- err = hid_logitech_send_report(fd, rep3, sizeof(rep3));
-out:
- close(fd);
- return err;
-}
-
-static int usb_switch_dell(struct usb_dev_handle *dev, enum mode mode)
-{
- char report[] = { 0x7f, 0x00, 0x00, 0x00 };
- int err;
-
- switch (mode) {
- case HCI:
- report[1] = 0x13;
- break;
- case HID:
- report[1] = 0x14;
- break;
- }
-
- /* Don't need to check return, as might not be in use */
- usb_detach_kernel_driver_np(dev, 0);
-
- if (usb_claim_interface(dev, 0) < 0)
- return -EIO;
-
- err = usb_control_msg(dev,
- 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;
- }
- return err;
-}
-
-/*
- * libusb needs to scan and open all devices, just to to find the
- * device we already have. This should be fixed in libusb.
- */
-static struct usb_device *usb_device_open_from_udev(struct udev_device *usb_dev)
-{
- struct usb_bus *bus;
- const char *str;
- int busnum;
- int devnum;
-
- str = udev_device_get_sysattr_value(usb_dev, "busnum");
- if (str == NULL)
- return NULL;
- busnum = strtol(str, NULL, 0);
-
- str = udev_device_get_sysattr_value(usb_dev, "devnum");
- if (str == NULL)
- return NULL;
- devnum = strtol(str, NULL, 0);
-
- usb_init();
- usb_find_busses();
- usb_find_devices();
-
- for (bus = usb_get_busses(); bus; bus = bus->next) {
- struct usb_device *dev;
-
- if (strtol(bus->dirname, NULL, 10) != busnum)
- continue;
-
- for (dev = bus->devices; dev; dev = dev->next) {
- if (dev->devnum == devnum)
- return dev;
- }
- }
-
- return NULL;
-}
-
-static struct usb_dev_handle *find_device(struct udev_device *udev_dev)
-{
- struct usb_device *dev;
-
- dev = usb_device_open_from_udev(udev_dev);
- if (dev == NULL)
- return NULL;
- return usb_open(dev);
-}
-
-static void usage(const char *error)
-{
- if (error)
- fprintf(stderr,"\n%s\n", error);
- else
- printf("hid2hci - Bluetooth HID to HCI mode switching utility\n\n");
-
- printf("Usage: hid2hci [options]\n"
- " --mode= mode to switch to [hid|hci] (default hci)\n"
- " --devpath= sys device path\n"
- " --method= method to use to switch [csr|logitech-hid|dell]\n"
- " --help\n\n");
-}
-
-int main(int argc, char *argv[])
-{
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "mode", required_argument, NULL, 'm' },
- { "devpath", required_argument, NULL, 'p' },
- { "method", required_argument, NULL, 'M' },
- { }
- };
- enum method {
- METHOD_UNDEF,
- METHOD_CSR,
- METHOD_LOGITECH_HID,
- METHOD_DELL,
- } method = METHOD_UNDEF;
- struct udev *udev;
- struct udev_device *udev_dev = NULL;
- char syspath[PATH_MAX];
- int (*usb_switch)(struct usb_dev_handle *dev, enum mode mode) = NULL;
- enum mode mode = HCI;
- const char *devpath = NULL;
- int err = -1;
- int rc = 1;
-
- for (;;) {
- int option;
-
- option = getopt_long(argc, argv, "m:p:M:h", options, NULL);
- if (option == -1)
- break;
-
- switch (option) {
- case 'm':
- if (!strcmp(optarg, "hid")) {
- mode = HID;
- } else if (!strcmp(optarg, "hci")) {
- mode = HCI;
- } else {
- usage("error: undefined radio mode\n");
- exit(1);
- }
- break;
- case 'p':
- devpath = optarg;
- break;
- case 'M':
- if (!strcmp(optarg, "csr")) {
- method = METHOD_CSR;
- usb_switch = usb_switch_csr;
- } else if (!strcmp(optarg, "logitech-hid")) {
- method = METHOD_LOGITECH_HID;
- } else if (!strcmp(optarg, "dell")) {
- method = METHOD_DELL;
- usb_switch = usb_switch_dell;
- } else {
- usage("error: undefined switching method\n");
- exit(1);
- }
- break;
- case 'h':
- usage(NULL);
- }
- }
-
- if (!devpath || method == METHOD_UNDEF) {
- usage("error: --devpath= and --method= must be defined\n");
- exit(1);
- }
-
- udev = udev_new();
- if (udev == NULL)
- goto exit;
-
- snprintf(syspath, sizeof(syspath), "%s/%s", udev_get_sys_path(udev), devpath);
- udev_dev = udev_device_new_from_syspath(udev, syspath);
- if (udev_dev == NULL) {
- fprintf(stderr, "error: could not find '%s'\n", devpath);
- goto exit;
- }
-
- switch (method) {
- case METHOD_CSR:
- case METHOD_DELL: {
- struct udev_device *dev;
- struct usb_dev_handle *handle;
- const char *type;
-
- /* get the parent usb_device if needed */
- dev = udev_dev;
- type = udev_device_get_devtype(dev);
- if (type == NULL || strcmp(type, "usb_device") != 0) {
- dev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_device");
- if (dev == NULL) {
- fprintf(stderr, "error: could not find usb_device for '%s'\n", devpath);
- goto exit;
- }
- }
-
- handle = find_device(dev);
- if (handle == NULL) {
- fprintf(stderr, "error: unable to handle '%s'\n",
- udev_device_get_syspath(dev));
- goto exit;
- }
- err = usb_switch(handle, mode);
- break;
- }
- case METHOD_LOGITECH_HID: {
- const char *device;
-
- device = udev_device_get_devnode(udev_dev);
- if (device == NULL) {
- fprintf(stderr, "error: could not find hiddev device node\n");
- goto exit;
- }
- err = hid_switch_logitech(device);
- break;
- }
- default:
- break;
- }
-
- if (err < 0)
- fprintf(stderr, "error: switching device '%s' failed.\n",
- udev_device_get_syspath(udev_dev));
-exit:
- udev_device_unref(udev_dev);
- udev_unref(udev);
- return rc;
-}
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