Firmware/opensbi
8
0
Fork 0
forked from Mirrors/opensbi
Code Pull Requests Activity

lib: sbi: Add generic timer delay loop function

Browse Source 
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>
This commit is contained in:
Anup Patel
2021-09-15 10:11:24 +05:30
committed by Anup Patel
parent 6355155f51
commit 9d0ab35ab4
2 changed files with 50 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
include/sbi/sbi_timer.h
View File

@@ -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);