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lib: sbi_timer: Introduce sbi_timer_compute_delta() and friends

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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>
This commit is contained in:
Anup Patel
2026-04-25 16:10:48 +05:30
committed by Anup Patel
parent b7fa8a246c
commit 1932ee3f0a
2 changed files with 37 additions and 4 deletions
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include/sbi/sbi_timer.h
+27
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@@ -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);