| /* |
| * arch/arm/plat-ambarella/include/plat/reglock.h |
| * |
| * Author: Cao Rongrong <rrcao@ambarella.com> |
| * |
| * Copyright (C) 2004-2010, Ambarella, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #ifndef __PLAT_AMBARELLA_REGISTER_LOCK_H |
| #define __PLAT_AMBARELLA_REGISTER_LOCK_H |
| |
| /* ==========================================================================*/ |
| #ifndef __ASSEMBLER__ |
| #ifdef CONFIG_PLAT_AMBARELLA_ADD_REGISTER_LOCK |
| #include <linux/spinlock.h> |
| extern spinlock_t ambarella_register_lock; |
| extern unsigned long ambarella_register_flags; |
| extern u32 amb_reglock_count; |
| |
| #define AMBARELLA_REG_LOCK() \ |
| spin_lock_irqsave(&ambarella_register_lock, ambarella_register_flags) |
| #define AMBARELLA_REG_UNLOCK() \ |
| spin_unlock_irqrestore(&ambarella_register_lock, ambarella_register_flags) |
| #define AMBARELLA_INC_REGLOCK_COUNT() \ |
| amb_reglock_count++ |
| #else |
| #define AMBARELLA_REG_LOCK() |
| #define AMBARELLA_REG_UNLOCK() |
| #define AMBARELLA_INC_REGLOCK_COUNT() |
| #endif /* CONFIG_PLAT_AMBARELLA_ADD_REGISTER_LOCK */ |
| #endif /* __ASSEMBLER__ */ |
| /* ==========================================================================*/ |
| |
| #endif |
| |
