[U-Boot] [PATCH] ARM: atmel: switch to use common timer functions

[Bo Shen]

The commit 8dfafdd (Introduce common timer functions), add common
timer functions, we can use them directly.

Signed-off-by: Bo Shen <voice.shen at atmel.com>
---

 arch/arm/cpu/armv7/at91/timer.c          | 61 --------------------------------
 arch/arm/include/asm/arch-at91/sama5d3.h |  3 ++
 arch/arm/include/asm/arch-at91/sama5d4.h |  3 ++
 3 files changed, 6 insertions(+), 61 deletions(-)

diff --git a/arch/arm/cpu/armv7/at91/timer.c b/arch/arm/cpu/armv7/at91/timer.c
index 19bf80b..a4a3817 100644
--- a/arch/arm/cpu/armv7/at91/timer.c
+++ b/arch/arm/cpu/armv7/at91/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
  */
@@ -67,55 +51,10 @@ 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.
  */
 ulong get_tbclk(void)
diff --git a/arch/arm/include/asm/arch-at91/sama5d3.h b/arch/arm/include/asm/arch-at91/sama5d3.h
index 227ba80..b749cb3 100644
--- a/arch/arm/include/asm/arch-at91/sama5d3.h
+++ b/arch/arm/include/asm/arch-at91/sama5d3.h
@@ -189,6 +189,9 @@
 #define PIO_SCDR_DIV		0x3fff
 #define CPU_HAS_PCR
 
+/* Timer */
+#define CONFIG_SYS_TIMER_COUNTER	0xfffffe3c
+
 /*
  * PMECC table in ROM
  */
diff --git a/arch/arm/include/asm/arch-at91/sama5d4.h b/arch/arm/include/asm/arch-at91/sama5d4.h
index d851568..990846a 100644
--- a/arch/arm/include/asm/arch-at91/sama5d4.h
+++ b/arch/arm/include/asm/arch-at91/sama5d4.h
@@ -191,6 +191,9 @@
 #define cpu_is_sama5d44()	(cpu_is_sama5d4() && \
 		(get_extension_chip_id() == ARCH_EXID_SAMA5D44))
 
+/* Timer */
+#define CONFIG_SYS_TIMER_COUNTER	0xfffffe3c
+
 /*
  * No PMECC Galois table in ROM
  */
-- 
2.3.0.rc0