X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fmach-at91%2Farmv7%2Ftimer.c;h=a4a3817aa63f8b786121461f73d30fa8518ad7b2;hb=1692515e51a190b2ad1e2c54fdaa15fbb8387ba7;hp=19bf80ba7eb6195a57b8d91bde9e793567da7fd6;hpb=620118403e1521b4c883848a84d2fb68e3fa1aa0;p=u-boot diff --git a/arch/arm/mach-at91/armv7/timer.c b/arch/arm/mach-at91/armv7/timer.c index 19bf80ba7e..a4a3817aa6 100644 --- a/arch/arm/mach-at91/armv7/timer.c +++ b/arch/arm/mach-at91/armv7/timer.c @@ -36,22 +36,6 @@ DECLARE_GLOBAL_DATA_PTR; #define TIMER_LOAD_VAL 0xfffff -static inline unsigned long long tick_to_time(unsigned long long tick) -{ - tick *= CONFIG_SYS_HZ; - do_div(tick, gd->arch.timer_rate_hz); - - return tick; -} - -static inline unsigned long long usec_to_tick(unsigned long long usec) -{ - usec *= gd->arch.timer_rate_hz; - do_div(usec, 1000000); - - return usec; -} - /* * Use the PITC in full 32 bit incrementing mode */ @@ -67,54 +51,9 @@ int timer_init(void) gd->arch.timer_rate_hz = get_pit_clk_rate() / 16; - gd->arch.tbu = 0; - gd->arch.tbl = 0; - return 0; } -/* - * Get the current 64 bit timer tick count - */ -unsigned long long get_ticks(void) -{ - at91_pit_t *pit = (at91_pit_t *)ATMEL_BASE_PIT; - - ulong now = readl(&pit->piir); - - /* increment tbu if tbl has rolled over */ - if (now < gd->arch.tbl) - gd->arch.tbu++; - gd->arch.tbl = now; - return (((unsigned long long)gd->arch.tbu) << 32) | gd->arch.tbl; -} - -void __udelay(unsigned long usec) -{ - unsigned long long start; - ulong tmo; - - start = get_ticks(); /* get current timestamp */ - tmo = usec_to_tick(usec); /* convert usecs to ticks */ - while ((get_ticks() - start) < tmo) - ; /* loop till time has passed */ -} - -/* - * get_timer(base) can be used to check for timeouts or - * to measure elasped time relative to an event: - * - * ulong start_time = get_timer(0) sets start_time to the current - * time value. - * get_timer(start_time) returns the time elapsed since then. - * - * The time is used in CONFIG_SYS_HZ units! - */ -ulong get_timer(ulong base) -{ - return tick_to_time(get_ticks()) - base; -} - /* * Return the number of timer ticks per second. */