/**
* Init function for the modetransition component
*
* @return TRUE on success, FALSE on failure
*/
gboolean mce_mode_init(void)
{
gboolean status = FALSE;
/* Append triggers/filters to datapipes */
mce_mode_datapipe_init();
/* If the bootup file exists, mce has crashed / restarted;
* since it exists in /var/run it will be removed when we reboot.
*
* If the file doesn't exist, create it to ensure that
* restarting mce doesn't get mce stuck in the transition submode
*/
if (g_access(MCE_BOOTUP_FILENAME, F_OK) == -1) {
if (errno == ENOENT) {
mce_log(LL_DEBUG, "Bootup mode enabled");
mce_add_submode_int32(MCE_SUBMODE_TRANSITION);
errno = 0;
mce_write_string_to_file(MCE_BOOTUP_FILENAME,
ENABLED_STRING);
if (g_access(MALF_FILENAME, F_OK) == 0) {
mce_add_submode_int32(MCE_SUBMODE_MALF);
mce_log(LL_DEBUG, "Malf mode enabled");
if (g_access(MCE_MALF_FILENAME, F_OK) == -1) {
if (errno != ENOENT) {
mce_log(LL_CRIT,
"access() failed: %s. Exiting.",
g_strerror(errno));
goto EXIT;
}
mce_write_string_to_file(MCE_MALF_FILENAME,
ENABLED_STRING);
}
}
} else {
mce_log(LL_CRIT,
"access() failed: %s. Exiting.",
g_strerror(errno));
goto EXIT;
}
} else {
if (g_access(MALF_FILENAME, F_OK) == 0) {
if (g_access(MCE_MALF_FILENAME, F_OK) == 0) {
mce_add_submode_int32(MCE_SUBMODE_MALF);
mce_log(LL_DEBUG, "Malf mode enabled");
}
} else if ((errno == ENOENT) &&
(g_access(MCE_MALF_FILENAME, F_OK) == 0)) {
g_remove(MCE_MALF_FILENAME);
}
}
status = TRUE;
EXIT:
return status;
}
/** Allow/deny touch panel to enter sleep mode
*
* @param allow true to allow touch to sleep, false to deny
*/
static void dbltap_allow_sleep_mode(bool allow)
{
/* Initialized not to match any bool value */
static int allowed = -1;
/* Whether or not this function gets called depends on the
* availability of dbltap_ctrl_path, so we need to check that
* sleep_mode_ctrl_path and related values are also configured
* and available */
if( !sleep_mode_ctrl_path )
goto EXIT;
if( !sleep_mode_allow_val || !sleep_mode_deny_val )
goto EXIT;
if( allowed == allow )
goto EXIT;
allowed = allow;
mce_log(LL_DEBUG, "touch panel sleep mode %s",
allowed ? "allowed" : "denied");
mce_write_string_to_file(sleep_mode_ctrl_path,
allowed ?
sleep_mode_allow_val :
sleep_mode_deny_val);
EXIT:
return;
}
/** Enable/disable doubletap wakeups
*
* @param state disable/enable/disable-without-powering-off
*/
static void dbltap_set_state(dt_state_t state)
{
static dt_state_t prev_state = DT_UNDEF;
bool allow_sleep_mode = true;
if( prev_state == state )
goto EXIT;
prev_state = state;
mce_log(LL_DEBUG, "double tap wakeups: %s", dt_state_name[state]);
const char *val = 0;
switch( state ) {
case DT_DISABLED:
val = dbltap_disable_val;
break;
case DT_ENABLED:
val = dbltap_enable_val;
break;
case DT_DISABLED_NOSLEEP:
val = dbltap_disable_val;
allow_sleep_mode = false;
break;
default:
break;
}
if( val ) {
dbltap_allow_sleep_mode(allow_sleep_mode);
mce_write_string_to_file(dbltap_ctrl_path, val);
}
EXIT:
return;
}