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| author | Anup Patel <anup.patel@oss.qualcomm.com> | 2026-04-25 16:10:48 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2026-05-09 13:16:07 +0530 |
| commit | 1932ee3f0ae2f200431c20018e2d75dbceb65695 (patch) | |
| tree | 6ee68e4c69561126cd7ce2e37c5ac63a2f2b8f5a /include | |
| parent | b7fa8a246cba80d74c0993dd0275b3c1589ef8b6 (diff) | |
| download | opensbi-1932ee3f0ae2f200431c20018e2d75dbceb65695.tar.gz opensbi-1932ee3f0ae2f200431c20018e2d75dbceb65695.zip | |
lib: sbi_timer: Introduce sbi_timer_compute_delta() and friends
The users of timer event have to compute next_event (aka timer value
in the future) based on desired units and unit frequency. Introduce
sbi_timer_compute_delta() and friends to simplify computing next_event
for timer event users.
Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Link: https://lore.kernel.org/r/20260425104048.2335262-5-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_timer.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/sbi/sbi_timer.h b/include/sbi/sbi_timer.h index 914a5f12..2a040927 100644 --- a/include/sbi/sbi_timer.h +++ b/include/sbi/sbi_timer.h @@ -88,6 +88,21 @@ struct sbi_timer_device { struct sbi_scratch; +/** Compute timer value delta based on arbitary units */ +u64 sbi_timer_compute_delta(ulong units, u64 unit_freq); + +/** Compute timer value delta from milliseconds */ +static inline u64 sbi_timer_compute_mdelta(ulong msecs) +{ + return sbi_timer_compute_delta(msecs, 1000); +} + +/** Compute timer value delta from microseconds */ +static inline u64 sbi_timer_compute_udelta(ulong usecs) +{ + return sbi_timer_compute_delta(usecs, 1000000); +} + /** Generic delay loop of desired granularity */ void sbi_timer_delay_loop(ulong units, u64 unit_freq, void (*delay_fn)(void *), void *opaque); @@ -125,6 +140,18 @@ bool sbi_timer_waitms_until(bool (*predicate)(void *), void *arg, /** Get timer value for current HART */ u64 sbi_timer_value(void); +/** Compute timer value after specified milliseconds */ +static inline u64 sbi_timer_value_after_msecs(ulong msecs) +{ + return sbi_timer_value() + sbi_timer_compute_mdelta(msecs); +} + +/** Compute timer value after specified microseconds */ +static inline u64 sbi_timer_value_after_usecs(ulong usecs) +{ + return sbi_timer_value() + sbi_timer_compute_udelta(usecs); +} + /** Get virtualized timer value for current HART */ u64 sbi_timer_virt_value(void); |