diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/drivers/delay_timer.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/include/drivers/delay_timer.h b/include/drivers/delay_timer.h index 684f1c3c..e5044cc6 100644 --- a/include/drivers/delay_timer.h +++ b/include/drivers/delay_timer.h @@ -1,5 +1,6 @@ /* - * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2019, Linaro Limited * * SPDX-License-Identifier: BSD-3-Clause */ @@ -7,8 +8,11 @@ #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 @@ -23,6 +27,25 @@ typedef struct timer_ops { uint32_t clk_div; } timer_ops_t; +static inline uint64_t timeout_cnt_us2cnt(uint32_t us) +{ + return ((uint64_t)us * (uint64_t)read_cntfrq_el0()) / 1000000ULL; +} + +static inline uint64_t timeout_init_us(uint32_t us) +{ + uint64_t cnt = timeout_cnt_us2cnt(us); + + cnt += read_cntfrq_el0(); + + return cnt; +} + +static inline bool timeout_elapsed(uint64_t expire_cnt) +{ + return read_cntpct_el0() > expire_cnt; +} + void mdelay(uint32_t msec); void udelay(uint32_t usec); void timer_init(const timer_ops_t *ops_ptr); |