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|
/*
* fmrxd - a daemon to enable and multiplex access to the N950/N9 radio tuner
* Copyright (C) 2011 Javier S. Pedro <maemo@javispedro.com>
*
* Mostly based on ohm-plugins-misc from MeeGo Multimedia
* Copyright (C) 2010 Nokia Corporation
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdbool.h>
#include <errno.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <glib.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include "fmrxd.h"
static gboolean disable_bt_func(gpointer data)
{
int dd;
g_debug("Now disabling BT");
dd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (dd == -1) {
g_message("Failed to open HCI socket: %s", strerror(errno));
return FALSE;
}
if (ioctl(dd, HCIDEVDOWN, BT_DEV_ID) < 0 && errno != EALREADY) {
g_message("Failed to turn Bluetooth device off: %s", strerror(errno));
}
close(dd);
return FALSE;
}
bool configure_bt_muxer(bool on)
{
struct sockaddr_hci a;
int dd;
bool was_up;
/* The magic numbers: */
const short ocf = 0x00;
const short ogf = 0x3f;
char cmd[4] = { 0xf3, 0x88, 0x01, on ? 0x02 : 0x01 };
/* Open HCI socket. */
dd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (dd == -1) {
g_warning("Failed to open HCI socket: %s", strerror(errno));
return false;
}
/* Try to turn the specificied BT device on. */
if (ioctl(dd, HCIDEVUP, BT_DEV_ID) < 0) {
if (errno == EALREADY) {
/* The BT device was found to be already on; no need to turn it off later. */
was_up = true;
} else {
g_warning("Failed to turn Bluetooth device on: %s", strerror(errno));
goto failed;
}
} else {
/* Turned on succesfully. */
g_debug("Turned on BT");
was_up = false;
}
/* Bind HCI socket to this device. */
memset(&a, 0, sizeof(a));
a.hci_family = AF_BLUETOOTH;
a.hci_dev = BT_DEV_ID;
if (bind(dd, (struct sockaddr *) &a, sizeof(a)) < 0) {
g_warning("Failed to bind HCI socket: %s", strerror(errno));
goto failed;
}
/* Now send the magic command. */
if (hci_send_cmd(dd, ogf, ocf, sizeof(cmd), cmd) < 0) {
g_warning("Failed to send magic HCI command: %s", strerror(errno));
goto failed;
}
g_debug("Muxer config changed to 0x%x", cmd[3]);
close(dd);
if (!was_up) {
/* Try to shut down bluetooth if we enabled it. */
/* Give ample time for everything to be setup though. */
g_timeout_add_seconds(1, disable_bt_func, NULL);
}
return true;
failed:
close(dd);
return false;
}
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