/** Use sysfs interface to disable a wakelock.
*
* @param name The name of the wakelock to release
*
* Note: This will not delete the wakelocks.
*/
void wakelock_unlock(const char *name)
{
if( lwl_enabled() ) {
char tmp[64];
lwl_concat(tmp, sizeof tmp, name, "\n", NULL);
lwl_write_file(lwl_unlock_path, tmp);
}
}
/** Use sysfs interface to disable a wakelock.
*
* @param name The name of the wakelock to release
*
* Note: This will not delete the wakelocks.
*/
void wakelock_unlock(const char *name)
{
if( lwl_probe() > SUSPEND_TYPE_NONE ) {
char tmp[64];
lwl_concat(tmp, sizeof tmp, name, "\n", NULL);
lwl_write_file(lwl_unlock_path, tmp);
}
}
/** Use sysfs interface to create and enable a wakelock.
*
* @param name The name of the wakelock to obtain
* @param ns Time in nanoseconds before the wakelock gets released
* automatically, or negative value for no timeout.
*/
void wakelock_lock(const char *name, long long ns)
{
if( lwl_enabled() && !lwl_shutting_down ) {
char tmp[64];
char num[64];
if( ns < 0 ) {
lwl_concat(tmp, sizeof tmp, name, "\n", NULL);
} else {
lwl_concat(tmp, sizeof tmp, name, " ",
lwl_number(num, sizeof num, ns),
"\n", NULL);
}
lwl_write_file(lwl_lock_path, tmp);
}
}
/** Use sysfs interface to create and enable a wakelock.
*
* @param name The name of the wakelock to obtain
* @param ns Time in nanoseconds before the wakelock gets released
* automatically, or negative value for no timeout.
*/
void wakelock_lock(const char *name, long long ns)
{
if( lwl_shutting_down )
goto EXIT;
if( lwl_probe() > SUSPEND_TYPE_NONE ) {
char tmp[64];
char num[64];
if( ns < 0 ) {
lwl_concat(tmp, sizeof tmp, name, "\n", NULL);
} else {
lwl_concat(tmp, sizeof tmp, name, " ",
lwl_number(num, sizeof num, ns),
"\n", NULL);
}
lwl_write_file(lwl_lock_path, tmp);
}
EXIT:
return;
}
/** Use sysfs interface to block automatic entry to suspend
*
* The device will not enter suspend mode with or without
* active wakelocks.
*/
void wakelock_block_suspend(void)
{
if( lwl_enabled() ) {
lwl_write_file(lwl_state_path, "on\n");
}
}
/** Use sysfs interface to allow automatic entry to suspend
*
* After this call the device will enter suspend mode once all
* the wakelocks have been released.
*
* Android kernels will enter early suspend (i.e. display is
* turned off etc) even if there still are active wakelocks.
*/
void wakelock_allow_suspend(void)
{
if( lwl_enabled() && !lwl_shutting_down ) {
lwl_write_file(lwl_state_path, "mem\n");
}
}