diff options
| author | Anup Patel <anup.patel@wdc.com> | 2021-09-15 10:11:24 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-09-26 19:52:15 +0530 |
| commit | 9d0ab35ab4e2b9edf022237e2592d999dfe54704 (patch) | |
| tree | 1a13f3b9bf115657923f82ae9fb991d4b2f6f995 /include | |
| parent | 6355155f51d4b636a228b75d82ebbdc706174ae7 (diff) | |
lib: sbi: Add generic timer delay loop function
We now have frequency of the timer device provided by the platform
support so we can emulate desired delay using a loop where the number
loop iterations are based on timer frequency.
This patch provides sbi_timer_delay_loop() for above purpose.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_timer.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/sbi/sbi_timer.h b/include/sbi/sbi_timer.h index 211e83d..63ef1af 100644 --- a/include/sbi/sbi_timer.h +++ b/include/sbi/sbi_timer.h @@ -32,6 +32,22 @@ struct sbi_timer_device { struct sbi_scratch; +/** Generic delay loop of desired granularity */ +void sbi_timer_delay_loop(ulong units, u64 unit_freq, + void (*delay_fn)(void *), void *opaque); + +/** Provide delay in terms of milliseconds */ +static inline void sbi_timer_mdelay(ulong msecs) +{ + sbi_timer_delay_loop(msecs, 1000, NULL, NULL); +} + +/** Provide delay in terms of microseconds */ +static inline void sbi_timer_udelay(ulong usecs) +{ + sbi_timer_delay_loop(usecs, 1000000, NULL, NULL); +} + /** Get timer value for current HART */ u64 sbi_timer_value(void); |