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#include <linux/semaphore.h>
#include <linux/mutex.h>
#include <linux/time.h>
#include <linux/delay.h>
#include "extd_utils.h"
#include "extd_drv_log.h"
static DEFINE_SEMAPHORE(extd_mutex);
int extd_mutex_init(struct mutex *m)
{
EXT_DISP_LOG("mutex init:\n");
mutex_init(m);
return 0;
}
int extd_sw_mutex_lock(struct mutex*m)
{
///mutex_lock(m);
down_interruptible(&extd_mutex);
//EXT_DISP_LOG("mutex: lock\n");
return 0;
}
int extd_mutex_trylock(struct mutex*m)
{
int ret = 0;
///ret = mutex_trylock(m);
EXT_DISP_LOG("mutex: trylock\n");
return ret;
}
int extd_sw_mutex_unlock(struct mutex*m)
{
///mutex_unlock(m);
up(&extd_mutex);
//EXT_DISP_LOG("mutex: unlock\n");
return 0;
}
int extd_msleep(unsigned int ms)
{
EXT_DISP_LOG("sleep %dms\n", ms);
msleep(ms);
return 0;
}
long int extd_get_time_us(void)
{
struct timeval t;
do_gettimeofday(&t);
return (t.tv_sec & 0xFFF) * 1000000 + t.tv_usec;
}
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