Commit 2f6cf7bf authored by Mike Frysinger's avatar Mike Frysinger Committed by Bryan Wu

Blackfin arch: add functions for converting between sclks and usecs

Signed-off-by: default avatarMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
parent b0a68dc0
...@@ -459,7 +459,7 @@ static u_long get_vco(void) ...@@ -459,7 +459,7 @@ static u_long get_vco(void)
return vco; return vco;
} }
/*Get the Core clock*/ /* Get the Core clock */
u_long get_cclk(void) u_long get_cclk(void)
{ {
u_long csel, ssel; u_long csel, ssel;
...@@ -493,6 +493,18 @@ u_long get_sclk(void) ...@@ -493,6 +493,18 @@ u_long get_sclk(void)
} }
EXPORT_SYMBOL(get_sclk); EXPORT_SYMBOL(get_sclk);
unsigned long sclk_to_usecs(unsigned long sclk)
{
return (USEC_PER_SEC * (u64)sclk) / get_sclk();
}
EXPORT_SYMBOL(sclk_to_usecs);
unsigned long usecs_to_sclk(unsigned long usecs)
{
return get_sclk() / (USEC_PER_SEC * (u64)usecs);
}
EXPORT_SYMBOL(usecs_to_sclk);
/* /*
* Get CPU information for use by the procfs. * Get CPU information for use by the procfs.
*/ */
......
...@@ -47,6 +47,8 @@ ...@@ -47,6 +47,8 @@
extern unsigned long get_cclk(void); extern unsigned long get_cclk(void);
extern unsigned long get_sclk(void); extern unsigned long get_sclk(void);
extern unsigned long sclk_to_usecs(unsigned long sclk);
extern unsigned long usecs_to_sclk(unsigned long usecs);
extern void dump_thread(struct pt_regs *regs, struct user *dump); extern void dump_thread(struct pt_regs *regs, struct user *dump);
extern void dump_bfin_regs(struct pt_regs *fp, void *retaddr); extern void dump_bfin_regs(struct pt_regs *fp, void *retaddr);
......
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