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>

diff --git a/arch/sh/lib/time.c b/arch/sh/lib/time.c
index c554fe8b665a026346731ba428e3ff679432e33b..d970a1e4f02c480dd3b665b185bed700f6c4bc1f 100644 (file)
--- 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);
-}