X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=lib%2Ftime.c;h=b001745203e85c2c6f944e5d470291660eae0af6;hb=db1f17f894b15402f3d1d43f7d273a42668b8ab4;hp=09bb05a24d331b0f023a149024278952e0e89054;hpb=a891601ce51edbafa1a2750c96a618e4fcbca1c2;p=people%2Fms%2Fu-boot.git

diff --git a/lib/time.c b/lib/time.c
index 09bb05a24d..b001745203 100644
--- a/lib/time.c
+++ b/lib/time.c
@@ -6,21 +6,21 @@
  */
 
 #include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <timer.h>
 #include <watchdog.h>
 #include <div64.h>
 #include <asm/io.h>
 
-#if CONFIG_SYS_HZ != 1000
-#warning "CONFIG_SYS_HZ must be 1000 and should not be defined by platforms"
-#endif
-
 #ifndef CONFIG_WD_PERIOD
-# define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default*/
+# define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default */
 #endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
 #ifdef CONFIG_SYS_TIMER_RATE
+/* Returns tick rate in ticks per second */
 ulong notrace get_tbclk(void)
 {
 	return CONFIG_SYS_TIMER_RATE;
@@ -40,7 +40,53 @@ unsigned long notrace timer_read_counter(void)
 extern unsigned long __weak timer_read_counter(void);
 #endif
 
-unsigned long long __weak notrace get_ticks(void)
+#ifdef CONFIG_TIMER
+static int notrace dm_timer_init(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	if (!gd->timer) {
+		ret = uclass_first_device(UCLASS_TIMER, &dev);
+		if (ret)
+			return ret;
+		if (!dev)
+			return -ENODEV;
+		gd->timer = dev;
+	}
+
+	return 0;
+}
+
+ulong notrace get_tbclk(void)
+{
+	int ret;
+
+	ret = dm_timer_init();
+	if (ret)
+		return ret;
+
+	return timer_get_rate(gd->timer);
+}
+
+unsigned long notrace timer_read_counter(void)
+{
+	unsigned long count;
+	int ret;
+
+	ret = dm_timer_init();
+	if (ret)
+		return ret;
+
+	ret = timer_get_count(gd->timer, &count);
+	if (ret)
+		return ret;
+
+	return count;
+}
+#endif /* CONFIG_TIMER */
+
+uint64_t __weak notrace get_ticks(void)
 {
 	unsigned long now = timer_read_counter();
 
@@ -48,18 +94,25 @@ unsigned long long __weak notrace get_ticks(void)
 	if (now < gd->timebase_l)
 		gd->timebase_h++;
 	gd->timebase_l = now;
-	return ((unsigned long long)gd->timebase_h << 32) | gd->timebase_l;
+	return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
 }
 
-static unsigned long long notrace tick_to_time(uint64_t tick)
+/* Returns time in milliseconds */
+static uint64_t notrace tick_to_time(uint64_t tick)
 {
-	unsigned int div = get_tbclk();
+	ulong div = get_tbclk();
 
 	tick *= CONFIG_SYS_HZ;
 	do_div(tick, div);
 	return tick;
 }
 
+int __weak timer_init(void)
+{
+	return 0;
+}
+
+/* Returns time in milliseconds */
 ulong __weak get_timer(ulong base)
 {
 	return tick_to_time(get_ticks()) - base;
@@ -69,23 +122,22 @@ unsigned long __weak notrace timer_get_us(void)
 {
 	return tick_to_time(get_ticks() * 1000);
 }
-static unsigned long long usec_to_tick(unsigned long usec)
+
+static uint64_t usec_to_tick(unsigned long usec)
 {
-	uint64_t tick = usec * get_tbclk();
-	usec *= get_tbclk();
+	uint64_t tick = usec;
+	tick *= get_tbclk();
 	do_div(tick, 1000000);
 	return tick;
 }
 
 void __weak __udelay(unsigned long usec)
 {
-	unsigned long long tmp;
-	ulong tmo;
+	uint64_t tmp;
 
-	tmo = usec_to_tick(usec);
-	tmp = get_ticks() + tmo;	/* get current timestamp */
+	tmp = get_ticks() + usec_to_tick(usec);	/* get current timestamp */
 
-	while (get_ticks() < tmp)	/* loop till event */
+	while (get_ticks() < tmp+1)	/* loop till event */
 		 /*NOP*/;
 }