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https://git.kernel.org/pub/scm/bluetooth/bluez.git
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054bfbcf4a
Enable HID protocol handling in userspace when UserspaceHID=true in input.conf. Benefits of userspace HID: 1. Persistent HID/input pipeline For a Bluetooth HID device, the corresponding kernel HID/input devices are created only once when the Bluetooth HID device is used the first time. The HID/input pipeline is not destroyed and recreated every time when the Bluetooth HID device disconnects and reconnects. 2. HID vs HoG parity Enables HID and HoG devices to operate the same way in BlueZ stack, using uHID kernel module (/dev/uhid) to pass HID report data between bluetoothd and kernel HID subsystem. 3. Debugging It is easier to debug HID protocol in userspace than in HIDP kernel module.
135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <errno.h>
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#include <stdbool.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/sdp.h>
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#include <bluetooth/sdp_lib.h>
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#include "src/log.h"
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#include "src/plugin.h"
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#include "lib/uuid.h"
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#include "src/adapter.h"
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#include "src/device.h"
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#include "src/profile.h"
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#include "src/service.h"
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#include "device.h"
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#include "server.h"
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static int hid_server_probe(struct btd_profile *p, struct btd_adapter *adapter)
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{
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return server_start(btd_adapter_get_address(adapter));
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}
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static void hid_server_remove(struct btd_profile *p,
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struct btd_adapter *adapter)
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{
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server_stop(btd_adapter_get_address(adapter));
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}
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static struct btd_profile input_profile = {
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.name = "input-hid",
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.local_uuid = HID_UUID,
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.remote_uuid = HID_UUID,
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.auto_connect = true,
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.connect = input_device_connect,
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.disconnect = input_device_disconnect,
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.device_probe = input_device_register,
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.device_remove = input_device_unregister,
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.adapter_probe = hid_server_probe,
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.adapter_remove = hid_server_remove,
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};
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static GKeyFile *load_config_file(const char *file)
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{
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GKeyFile *keyfile;
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GError *err = NULL;
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keyfile = g_key_file_new();
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if (!g_key_file_load_from_file(keyfile, file, 0, &err)) {
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if (!g_error_matches(err, G_FILE_ERROR, G_FILE_ERROR_NOENT))
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error("Parsing %s failed: %s", file, err->message);
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g_error_free(err);
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g_key_file_free(keyfile);
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return NULL;
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}
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return keyfile;
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}
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static int input_init(void)
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{
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GKeyFile *config;
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GError *err = NULL;
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config = load_config_file(CONFIGDIR "/input.conf");
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if (config) {
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int idle_timeout;
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gboolean uhid_enabled;
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idle_timeout = g_key_file_get_integer(config, "General",
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"IdleTimeout", &err);
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if (!err) {
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DBG("input.conf: IdleTimeout=%d", idle_timeout);
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input_set_idle_timeout(idle_timeout * 60);
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} else
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g_clear_error(&err);
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uhid_enabled = g_key_file_get_boolean(config, "General",
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"UserspaceHID", &err);
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if (!err) {
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DBG("input.conf: UserspaceHID=%s", uhid_enabled ?
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"true" : "false");
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input_enable_userspace_hid(uhid_enabled);
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} else
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g_clear_error(&err);
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}
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btd_profile_register(&input_profile);
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if (config)
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g_key_file_free(config);
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return 0;
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}
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static void input_exit(void)
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{
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btd_profile_unregister(&input_profile);
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}
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BLUETOOTH_PLUGIN_DEFINE(input, VERSION, BLUETOOTH_PLUGIN_PRIORITY_DEFAULT,
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input_init, input_exit)
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