diff options
author | Rob Herring <rob.herring@calxeda.com> | 2013-10-04 19:22:42 +0400 |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2013-11-04 20:08:10 +0400 |
commit | 1b5cf9549fe59e000dd8eff80eedafedf736fa3b (patch) | |
tree | c7297d5cd2c42b167678007f7cc5c7aa28c9f20a /arch/sh/lib | |
parent | 8dfafdde88eb3e71d5569846396ae67a91017232 (diff) | |
download | u-boot-1b5cf9549fe59e000dd8eff80eedafedf736fa3b.tar.xz |
sh: convert to common timer code
Convert sh to use the commmon timer code. Remove reset_timer and
set_timer as they are unused on sh.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'arch/sh/lib')
-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 c554fe8b66..d970a1e4f0 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); -} |