| /* |
| * Copyright (C) 2012 Google Inc. |
| * |
| * 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 |
| */ |
| |
| #ifndef CROS_EC_LOCK_H__ |
| #define CROS_EC_LOCK_H__ |
| |
| /* |
| * acquire_cros_ec_lock - acquire global lock |
| * |
| * returns 0 to indicate lock acquired |
| * returns >0 to indicate lock was already held |
| * returns <0 to indicate failed to acquire lock |
| */ |
| extern int acquire_cros_ec_lock(int timeout_secs); |
| |
| /* |
| * release_cros_ec_lock - release global lock |
| * |
| * returns 0 if lock was released successfully |
| * returns -1 if lock had not been held before the call |
| */ |
| extern int release_cros_ec_lock(void); |
| |
| #endif /* CROS_EC_LOCK_H__ */ |