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/***************************************************************************
* CVSID: $Id$
*
* addon-pmu-lid.c : Poll the lid button for PMU on Apple computers
*
* Copyright (C) 2005 David Zeuthen, <david@fubar.dk>
*
* 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 <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdint.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include "libhal/libhal.h"
#include "../probing/shared.h"
int
main (int argc, char *argv[])
{
int fd;
char *udi;
LibHalContext *ctx = NULL;
DBusError error;
int rd;
char buf[256];
int state;
int new_state;
char *strstate;
fd = -1;
_set_debug ();
udi = getenv ("UDI");
if (udi == NULL)
goto out;
dbus_error_init (&error);
if ((ctx = libhal_ctx_init_direct (&error)) == NULL)
goto out;
/* initial state */
if ((strstate = getenv ("HAL_PROP_BUTTON_STATE_VALUE")) == NULL) {
dbg ("Cannot get HAL_PROP_BUTTON_STATE_VALUE");
goto out;
}
if (strcmp (strstate, "true") == 0)
state = TRUE;
else
state = FALSE;
if ((fd = open ("/dev/adb", O_RDWR)) < 0) {
dbg ("Cannot open /dev/adb");
goto out;
}
drop_privileges (0);
while (1) {
int n;
buf[0] = PMU_PACKET;
buf[1] = PMU_GET_COVER;
n = write (fd, buf, 2);
if (n == 2) {
rd = read (fd, buf, sizeof (buf));
if (rd <= 0) {
dbg ("Error reading from fd; read returned %d; err=%s", errno, strerror (errno));
goto out;
}
#if 0
int i;
dbg ("Read 0x%02x bytes", rd);
for (i = 0; i < rd; i++) {
dbg ("%02x : 0x%02x", i, buf[i]);
}
#endif
if (rd >= 2) {
new_state = (((buf[1]) & 0x01) != 0);
if (new_state != state) {
dbg ("lid state change: %d", new_state);
dbus_error_init (&error);
libhal_device_set_property_bool (
ctx, udi, "button.state.value", new_state, &error);
dbus_error_init (&error);
libhal_device_emit_condition (ctx, udi, "ButtonPressed", "", &error);
}
state = new_state;
}
}
usleep (1000 * 1000);
}
out:
if (fd >= 0)
close (fd);
return 0;
}
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