1 /*
2  * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #ifndef __DELAY_TIMER_H__
8 #define __DELAY_TIMER_H__
9 
10 #include <stdint.h>
11 
12 /********************************************************************
13  * A simple timer driver providing synchronous delay functionality.
14  * The driver must be initialized with a structure that provides a
15  * function pointer to return the timer value and a clock
16  * multiplier/divider. The ratio of the multiplier and the divider is
17  * the clock period in microseconds.
18  ********************************************************************/
19 
20 typedef struct timer_ops {
21 	uint32_t (*get_timer_value)(void);
22 	uint32_t clk_mult;
23 	uint32_t clk_div;
24 } timer_ops_t;
25 
26 void mdelay(uint32_t msec);
27 void udelay(uint32_t usec);
28 void timer_init(const timer_ops_t *ops);
29 
30 
31 #endif /* __DELAY_TIMER_H__ */
32