diff options
| -rw-r--r-- | arch/sh/lib/time.c | 62 |
1 files changed, 2 insertions, 60 deletions
diff --git a/arch/sh/lib/time.c b/arch/sh/lib/time.c index c554fe8..d970a1e 100644 --- a/arch/sh/lib/time.c +++ b/arch/sh/lib/time.c @@ -12,7 +12,6 @@ */ #include <common.h> -#include <div64.h> #include <asm/processor.h> #include <asm/io.h> #include <sh_tmu.h> @@ -21,29 +20,15 @@ static struct tmu_regs *tmu = (struct tmu_regs *)TMU_BASE; -static unsigned long last_tcnt; -static unsigned long long overflow_ticks; - unsigned long get_tbclk(void) { u16 tmu_bit = (ffs(CONFIG_SYS_TMU_CLK_DIV) >> 1) - 1; return get_tmu0_clk_rate() >> ((tmu_bit + 1) * 2); } -static inline unsigned long long tick_to_time(unsigned long long tick) +unsigned long timer_read_counter(void) { - tick *= CONFIG_SYS_HZ; - do_div(tick, get_tbclk()); - - return tick; -} - -static inline unsigned long long usec_to_tick(unsigned long long usec) -{ - usec *= get_tbclk(); - do_div(usec, 1000000); - - return usec; + return ~readl(&tmu->tcnt0); } static void tmu_timer_start(unsigned int timer) @@ -68,49 +53,6 @@ int timer_init(void) tmu_timer_stop(0); tmu_timer_start(0); - last_tcnt = 0; - overflow_ticks = 0; - return 0; } -unsigned long long get_ticks(void) -{ - unsigned long tcnt = 0 - readl(&tmu->tcnt0); - - if (last_tcnt > tcnt) /* overflow */ - overflow_ticks++; - last_tcnt = tcnt; - - return (overflow_ticks << 32) | tcnt; -} - -void __udelay(unsigned long usec) -{ - unsigned long long tmp; - ulong tmo; - - tmo = usec_to_tick(usec); - tmp = get_ticks() + tmo; /* get current timestamp */ - - while (get_ticks() < tmp) /* loop till event */ - /*NOP*/; -} - -unsigned long get_timer(unsigned long base) -{ - /* return msec */ - return tick_to_time(get_ticks()) - base; -} - -void set_timer(unsigned long t) -{ - writel((0 - t), &tmu->tcnt0); -} - -void reset_timer(void) -{ - tmu_timer_stop(0); - set_timer(0); - tmu_timer_start(0); -} |