Add hid2hci utility

1 files changed, 419 insertions, 0 deletions

diff --git a/tools/hid2hci.c b/tools/hid2hci.c
new file mode 100644
index 00000000..95a7c7d6
--- /dev/null
+++ b/tools/hid2hci.c
@@ -0,0 +1,419 @@
+/*
+ *
+ *  Bluetooth HID to HCI mode switching utility
+ *
+ *  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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *
+ *  $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <dirent.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+
+
+static char usbpath[PATH_MAX + 1] = "/proc/bus/usb";
+
+struct usb_device_descriptor {
+	uint8_t  bLength;
+	uint8_t  bDescriptorType;
+	uint16_t bcdUSB;
+	uint8_t  bDeviceClass;
+	uint8_t  bDeviceSubClass;
+	uint8_t  bDeviceProtocol;
+	uint8_t  bMaxPacketSize0;
+	uint16_t idVendor;
+	uint16_t idProduct;
+	uint16_t bcdDevice;
+	uint8_t  iManufacturer;
+	uint8_t  iProduct;
+	uint8_t  iSerialNumber;
+	uint8_t  bNumConfigurations;
+} __attribute__ ((packed));
+
+struct usb_ctrltransfer {
+	uint8_t  bRequestType;
+	uint8_t  bRequest;
+	uint16_t wValue;
+	uint16_t wIndex;
+	uint16_t wLength;
+
+	uint32_t timeout;	/* in milliseconds */
+	void *data;		/* pointer to data */
+};
+
+#define IOCTL_USB_CONTROL	_IOWR('U', 0, struct usb_ctrltransfer)
+
+#define USB_RECIP_DEVICE	0x00
+#define USB_TYPE_VENDOR		0x40
+#define USB_DIR_OUT		0x00
+
+
+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 {
+	uint16_t busnum;
+	uint16_t devnum;
+	struct device_id *id;
+};
+
+
+static int switch_hidproxy(struct device_info *dev)
+{
+	struct usb_ctrltransfer ctrl;
+	char devname[PATH_MAX + 1];
+	int fd, err;
+
+	snprintf(devname, PATH_MAX, "%s/%03d/%03d",
+					usbpath, dev->busnum, dev->devnum);
+
+	fd = open(devname, O_RDWR);
+	if (fd < 0)
+		return fd;
+
+	ctrl.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	ctrl.bRequest     = 0;
+	ctrl.wValue       = dev->id->mode;
+	ctrl.wIndex       = 0;
+	ctrl.wLength      = 0;
+
+	ctrl.data    = NULL;
+	ctrl.timeout = 10000;
+
+	err = ioctl(fd, IOCTL_USB_CONTROL, &ctrl);
+
+	if (err == 0) {
+		err = -1;
+		errno = EALREADY;
+	} else {
+		if (errno == ETIMEDOUT)
+			err = 0;
+	}
+
+	close(fd);
+
+	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 *dev)
+{
+	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 != dev->busnum ||
+				dinfo.devnum != dev->devnum) {
+			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, 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 *dev, size_t size)
+{
+	DIR *busdir, *devdir;
+	struct dirent *entry;
+	struct usb_device_descriptor desc;
+	struct device_id *id;
+	int fd, len, busnum, devnum, count = 0;
+	char buspath[PATH_MAX + 1];
+	char devname[PATH_MAX + 1];
+
+	if (!(busdir = opendir(usbpath)))
+		return -1;
+
+	while ((entry = readdir(busdir))) {
+		if (entry->d_name[0] == '.')
+			continue;
+
+		if (!strchr("0123456789",
+				entry->d_name[strlen(entry->d_name) - 1]))
+			continue;
+
+		busnum = atoi(entry->d_name);
+		snprintf(buspath, PATH_MAX, "%s/%s", usbpath, entry->d_name);
+		if (!(devdir = opendir(buspath)))
+			continue;
+
+		while ((entry = readdir(devdir))) {
+			if (entry->d_name[0] == '.')
+				continue;
+
+			if (!strchr("0123456789",
+					entry->d_name[strlen(entry->d_name) - 1]))
+				continue;
+
+			devnum = atoi(entry->d_name);
+			snprintf(devname, PATH_MAX, "%s/%s",
+							buspath, entry->d_name);
+
+			if ((fd = open(devname, O_RDONLY)) < 0)
+				continue;
+
+			len = read(fd, &desc, sizeof(desc));
+			if (len < 0 || len != sizeof(desc))
+				continue;
+
+			id = match_device(mode, desc.idVendor, desc.idProduct);
+			if (!id)
+				continue;
+
+			if (count < size) {
+				dev[count].busnum  = busnum;
+				dev[count].devnum  = devnum;
+				dev[count].id = id;
+				count++;
+			}
+		}
+
+		closedir(devdir);
+	}
+
+	closedir(busdir);
+
+	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-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' },
+	{ "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, mode = HCI;
+
+	while ((opt = getopt_long(argc, argv, "+01h", main_options, NULL)) != -1) {
+		switch (opt) {
+		case '0':
+			mode = HCI;
+			break;
+		case '1':
+			mode = HID;
+			break;
+		case 'h':
+			usage();
+			exit(0);
+		default:
+			exit(0);
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	optind = 0;
+
+	num = find_devices(mode, dev, sizeof(dev) / sizeof(dev[0]));
+	if (num <= 0) {
+		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;
+
+		printf("Switching device %04x:%04x to %s mode ",
+			id->vendor, id->product, mode ? "HID" : "HCI");
+		fflush(stdout);
+
+		if (id->func(&dev[i]) < 0)
+			printf("failed (%s)\n", strerror(errno));
+		else
+			printf("was successful\n");
+	}
+
+	return 0;
+}