Improve timer functions

diff --git a/platform/psp/plat.c b/platform/psp/plat.c
index e4192c8..8381770 100644 (file)
--- a/platform/psp/plat.c
+++ b/platform/psp/plat.c
@@ -181,30 +181,13 @@ int plat_is_dir(const char *path)
 /* current time in ms */
 unsigned int plat_get_ticks_ms(void)
 {
-       struct timeval tv;
-       unsigned int ret;
-
-       gettimeofday(&tv, NULL);
-
-       ret = (unsigned)tv.tv_sec * 1000;
-       /* approximate /= 1000 */
-       ret += ((unsigned)tv.tv_usec * 4194) >> 22;
-
-       return ret;
+       return clock() / 1000;
 }
 
 /* current time in us */
 unsigned int plat_get_ticks_us(void)
 {
-       struct timeval tv;
-       unsigned int ret;
-
-       gettimeofday(&tv, NULL);
-
-       ret = (unsigned)tv.tv_sec * 1000000;
-       ret += (unsigned)tv.tv_usec;
-
-       return ret;
+       return clock();
 }
 
 /* sleep for some time in ms */
@@ -216,15 +199,9 @@ void plat_sleep_ms(int ms)
 /* sleep for some time in us */
 void plat_wait_till_us(unsigned int us_to)
 {
-       unsigned int now;
-
-       now = plat_get_ticks_us();
-
-       while ((signed int)(us_to - now) > 512)
-       {
-               usleep(1024);
-               now = plat_get_ticks_us();
-       }
+       unsigned int ticks = clock();
+       if (us_to > ticks)
+               usleep(us_to - ticks);
 }
 
 /* wait until some event occurs, or timeout */