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rk watch dog: modify driver

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This commit is contained in:
hhb
2013-11-05 16:16:36 +08:00
parent 663291e4e6
commit 96342a866b
1 changed files with 8 additions and 6 deletions
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14
drivers/watchdog/rk29_wdt.c
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@@ -32,7 +32,6 @@
#include <linux/clk.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <asm/mach/map.h>
@@ -146,14 +145,17 @@ void rk29_wdt_stop(void)
/* timeout unit second */
int rk29_wdt_set_heartbeat(int timeout)
{
unsigned int count = 0;
unsigned int torr = 0, acc = 1, maxtime = 0;
unsigned int freq = clk_get_rate(wdt_clock);
unsigned int long count;
unsigned int torr = 0;
unsigned int acc = 1;
if (timeout < 1)
return -EINVAL;
//0x80000000 is the max count of watch dog
maxtime = 0x80000000 / freq + 1;
if(timeout > maxtime)
timeout = maxtime;
count = timeout * freq;
count /= 0x10000;
@@ -164,7 +166,7 @@ int rk29_wdt_set_heartbeat(int timeout)
if(torr > 15){
torr = 15;
}
DBG("%s:%d\n", __func__, torr);
DBG("%s:torr:%d, count:%d, maxtime:%d s\n", __func__, torr, count, maxtime);
wdt_writel(torr, RK29_WDT_TORR);
return 0;
}