arm-trusted-firmware/include/drivers/delay_timer.h
Abhi.Singh a6485b2b3b refactor(delay-timer): add timer callback functions
In order to avoid separate platform definitions when not using the
default timer functions, it is better to move these functions out of the
header file and into the source files, so that they can be built if
needed.

Move timer functions from delay_timer.h into generic_delay_timer.c. Add
them as callback functions which are then called in delay_timer.c.

Change-Id: I96a1eac8948b1a7b1e481899b67a083db4c9b97d
Signed-off-by: Abhi Singh <abhi.singh@arm.com>
2024-10-16 10:33:03 +02:00

38 lines
1.1 KiB
C

/*
* Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
* Copyright (c) 2019, Linaro Limited
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef DELAY_TIMER_H
#define DELAY_TIMER_H
#include <stdbool.h>
#include <stdint.h>
#include <arch_helpers.h>
/********************************************************************
* A simple timer driver providing synchronous delay functionality.
* The driver must be initialized with a structure that provides a
* function pointer to return the timer value and a clock
* multiplier/divider. The ratio of the multiplier and the divider is
* the clock period in microseconds.
********************************************************************/
typedef struct timer_ops {
uint32_t (*get_timer_value)(void);
uint32_t clk_mult;
uint32_t clk_div;
uint64_t (*timeout_init_us)(uint32_t usec);
bool (*timeout_elapsed)(uint64_t cnt);
} timer_ops_t;
uint64_t timeout_init_us(uint32_t usec);
bool timeout_elapsed(uint64_t cnt);
void mdelay(uint32_t msec);
void udelay(uint32_t usec);
void timer_init(const timer_ops_t *ops_ptr);
#endif /* DELAY_TIMER_H */