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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 /lib | |
| 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 'lib')
| -rw-r--r-- | lib/sbi/sbi_timer.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/sbi/sbi_timer.c b/lib/sbi/sbi_timer.c index 70b8b5d2..4d737d22 100644 --- a/lib/sbi/sbi_timer.c +++ b/lib/sbi/sbi_timer.c @@ -58,6 +58,15 @@ static void nop_delay_fn(void *opaque) cpu_relax(); } +u64 sbi_timer_compute_delta(ulong units, u64 unit_freq) +{ + u64 delta; + + delta = ((u64)timer_dev->timer_freq * (u64)units); + delta = delta / unit_freq; + return delta; +} + void sbi_timer_delay_loop(ulong units, u64 unit_freq, void (*delay_fn)(void *), void *opaque) { @@ -72,15 +81,12 @@ void sbi_timer_delay_loop(ulong units, u64 unit_freq, /* Save starting timer value */ start_val = get_time_val(); - /* Compute desired timer value delta */ - delta = ((u64)timer_dev->timer_freq * (u64)units); - delta = delta / unit_freq; - /* Use NOP delay function if delay function not available */ if (!delay_fn) delay_fn = nop_delay_fn; /* Busy loop until desired timer value delta reached */ + delta = sbi_timer_compute_delta(units, unit_freq); while ((get_time_val() - start_val) < delta) delay_fn(opaque); } |