From 9df1bd416deef274536f00128ad11d24278fa655 Mon Sep 17 00:00:00 2001
From: Rob Herring <rob.herring@calxeda.com>
Date: Fri, 4 Oct 2013 10:22:43 -0500
Subject: [PATCH] ARM: highbank: convert to common timer code

Convert highbank to use the commmon timer code.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
---
 arch/arm/cpu/armv7/highbank/timer.c | 83 -----------------------------
 include/configs/highbank.h          |  4 ++
 2 files changed, 4 insertions(+), 83 deletions(-)

diff --git a/arch/arm/cpu/armv7/highbank/timer.c b/arch/arm/cpu/armv7/highbank/timer.c
index b61cd69bc6..d56bf21133 100644
--- a/arch/arm/cpu/armv7/highbank/timer.c
+++ b/arch/arm/cpu/armv7/highbank/timer.c
@@ -7,18 +7,12 @@
  */
 
 #include <common.h>
-#include <div64.h>
-#include <linux/types.h>        /* for size_t */
-#include <linux/stddef.h>       /* for NULL */
 #include <asm/io.h>
 #include <asm/arch-armv7/systimer.h>
 
 #undef SYSTIMER_BASE
 #define SYSTIMER_BASE		0xFFF34000	/* Timer 0 and 1 base	*/
-#define SYSTIMER_RATE		(150000000 / 256)
 
-static ulong timestamp;
-static ulong lastinc;
 static struct systimer *systimer_base = (struct systimer *)SYSTIMER_BASE;
 
 /*
@@ -38,80 +32,3 @@ int timer_init(void)
 	return 0;
 
 }
-
-#define TICK_PER_TIME	((SYSTIMER_RATE + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ)
-#define NS_PER_TICK	(1000000000 / SYSTIMER_RATE)
-
-static inline unsigned long long tick_to_time(unsigned long long tick)
-{
-	do_div(tick, TICK_PER_TIME);
-	return tick;
-}
-
-static inline unsigned long long time_to_tick(unsigned long long time)
-{
-	return time * TICK_PER_TIME;
-}
-
-static inline unsigned long long us_to_tick(unsigned long long us)
-{
-	unsigned long long tick = us * 1000;
-	tick += NS_PER_TICK - 1;
-	do_div(tick, NS_PER_TICK);
-	return tick;
-}
-
-unsigned long long get_ticks(void)
-{
-	ulong now = ~readl(&systimer_base->timer0value);
-
-	if (now >= lastinc)	/* normal mode (non roll) */
-		/* move stamp forward with absolut diff ticks */
-		timestamp += (now - lastinc);
-	else			/* we have rollover of incrementer */
-		timestamp += (0xFFFFFFFF - lastinc) + now;
-	lastinc = now;
-	return timestamp;
-}
-
-/*
- * Delay x useconds AND preserve advance timstamp value
- *     assumes timer is ticking at 1 msec
- */
-void __udelay(ulong usec)
-{
-	unsigned long long tmp;
-	ulong tmo;
-
-	tmo = us_to_tick(usec);
-	tmp = get_ticks() + tmo;	/* get current timestamp */
-
-	while (get_ticks() < tmp)	/* loop till event */
-		 /*NOP*/;
-}
-
-ulong get_timer(ulong base)
-{
-	return get_timer_masked() - base;
-}
-
-void reset_timer_masked(void)
-{
-	lastinc = ~readl(&systimer_base->timer0value);
-	timestamp = 0;
-}
-
-void reset_timer(void)
-{
-	reset_timer_masked();
-}
-
-ulong get_timer_masked(void)
-{
-	return tick_to_time(get_ticks());
-}
-
-ulong get_tbclk(void)
-{
-	return SYSTIMER_RATE;
-}
diff --git a/include/configs/highbank.h b/include/configs/highbank.h
index 016305a472..44a8f931bc 100644
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -19,6 +19,10 @@
 #define CONFIG_SUPPORT_RAW_INITRD
 #define CONFIG_SYS_BOOTMAPSZ		(16 << 20)
 
+#define CONFIG_SYS_TIMER_RATE		(150000000/256)
+#define CONFIG_SYS_TIMER_COUNTER	(0xFFF34000 + 0x4)
+#define CONFIG_SYS_TIMER_COUNTS_DOWN
+
 /*
  * Size of malloc() pool
  */