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

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

arch/blackfin/kernel/setup.c

+13 −1
Original line number Diff line number Diff line
@@ -493,6 +493,18 @@ u_long get_sclk(void) 
}

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.

 */

include/asm-blackfin/bfin-global.h

+2 −0
Original line number Diff line number Diff line
@@ -47,6 +47,8 @@ 


extern unsigned long get_cclk(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_bfin_regs(struct pt_regs *fp, void *retaddr);