1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2016 Cadence Design Systems Inc.
9 #include <asm/system.h>
11 typedef struct { volatile int counter; } atomic_t;
13 #define ATOMIC_INIT(i) { (i) }
15 #define atomic_read(v) ((v)->counter)
16 #define atomic_set(v, i) ((v)->counter = (i))
18 static inline void atomic_add(int i, atomic_t *v)
22 local_irq_save(flags);
24 local_irq_restore(flags);
27 static inline void atomic_sub(int i, atomic_t *v)
31 local_irq_save(flags);
33 local_irq_restore(flags);
36 static inline void atomic_inc(atomic_t *v)
40 local_irq_save(flags);
42 local_irq_restore(flags);
45 static inline void atomic_dec(atomic_t *v)
49 local_irq_save(flags);
51 local_irq_restore(flags);