Title: [8218] trunk/arch/blackfin/include/asm/delay.h: task [#5359], Blackfin arch implement ndelay()
- Revision
- 8218
- Author
- bhsong
- Date
- 2010-01-22 02:04:02 -0500 (Fri, 22 Jan 2010)
Log Message
task [#5359], Blackfin arch implement ndelay()
clean-up from Mike
Modified Paths
Diff
Modified: trunk/arch/blackfin/include/asm/delay.h (8217 => 8218)
--- trunk/arch/blackfin/include/asm/delay.h 2010-01-22 04:02:46 UTC (rev 8217)
+++ trunk/arch/blackfin/include/asm/delay.h 2010-01-22 07:04:02 UTC (rev 8218)
@@ -30,16 +30,20 @@
#define HZSCALE (268435456 / (1000000/HZ))
+static inline unsigned long __to_delay(unsigned long scale)
+{
+ extern unsigned long loops_per_jiffy;
+ return (((scale * HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6;
+}
+
static inline void udelay(unsigned long usecs)
{
- extern unsigned long loops_per_jiffy;
- __delay((((usecs * HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6);
+ __delay(__to_delay(usecs));
}
static inline void ndelay(unsigned long nsecs)
{
- extern unsigned long loops_per_jiffy;
- __delay(((((1 * HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6) * nsecs / 1000);
+ __delay(__to_delay(1) * nsecs / 1000);
}
#define ndelay ndelay
_______________________________________________
Linux-kernel-commits mailing list
[email protected]
https://blackfin.uclinux.org/mailman/listinfo/linux-kernel-commits
