mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 03:01:09 +02:00
[atheros] remove the clz function, use fls instead
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10878 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
2bd6fa2794
commit
03164df6fe
@ -20,6 +20,7 @@
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/bitops.h>
|
||||
#include <asm/bootinfo.h>
|
||||
#include <asm/irq_cpu.h>
|
||||
#include <asm/io.h>
|
||||
@ -39,7 +40,7 @@ static inline void ar5315_gpio_irq(void)
|
||||
if (!pend)
|
||||
return;
|
||||
|
||||
do_IRQ(AR531X_GPIO_IRQ_BASE + 31 - clz(pend));
|
||||
do_IRQ(AR531X_GPIO_IRQ_BASE + fls(pend) - 1);
|
||||
}
|
||||
|
||||
|
||||
|
@ -11,29 +11,6 @@
|
||||
extern void (*board_time_init)(void);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* C access to CLZ instruction
|
||||
* (count leading zeroes).
|
||||
*/
|
||||
static inline int clz(unsigned long val)
|
||||
{
|
||||
int ret;
|
||||
|
||||
__asm__ volatile (
|
||||
".set\tnoreorder\n\t"
|
||||
".set\tnoat\n\t"
|
||||
".set\tmips32\n\t"
|
||||
"clz\t%0,%1\n\t"
|
||||
".set\tmips0\n\t"
|
||||
".set\tat\n\t"
|
||||
".set\treorder"
|
||||
: "=r" (ret)
|
||||
: "r" (val)
|
||||
);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Atheros CPUs before the AR2315 are using MIPS 4Kc core, later designs are
|
||||
* using MIPS 4KEc R2 core. This makes it easy to determine the board at runtime.
|
||||
|
Loading…
Reference in New Issue
Block a user