X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fimx-common%2Ftimer.c;h=c63f78f6823cee5432e395bc8a7550564a6dee58;hb=1cad23c5f471d695bed1e3907e30caee3c2a3056;hp=ab37d641ece97c82f230ad9e6a89511fea8fddff;hpb=951c6baaf44c7fd4335b75fb92840d4e42c94927;p=u-boot

diff --git a/arch/arm/imx-common/timer.c b/arch/arm/imx-common/timer.c
index ab37d641ec..c63f78f682 100644
--- a/arch/arm/imx-common/timer.c
+++ b/arch/arm/imx-common/timer.c
@@ -4,23 +4,7 @@
  *
  * (C) Copyright 2009 Freescale Semiconductor, Inc.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
@@ -48,9 +32,6 @@ static struct mxc_gpt *cur_gpt = (struct mxc_gpt *)GPT1_BASE_ADDR;
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define timestamp (gd->arch.tbl)
-#define lastinc (gd->arch.lastinc)
-
 static inline unsigned long long tick_to_time(unsigned long long tick)
 {
 	tick *= CONFIG_SYS_HZ;
@@ -70,7 +51,6 @@ static inline unsigned long long us_to_tick(unsigned long long usec)
 int timer_init(void)
 {
 	int i;
-	ulong val;
 
 	/* setup GP Timer 1 */
 	__raw_writel(GPTCR_SWR, &cur_gpt->control);
@@ -85,9 +65,8 @@ int timer_init(void)
 	i = __raw_readl(&cur_gpt->control);
 	__raw_writel(i | GPTCR_CLKSOURCE_32 | GPTCR_TEN, &cur_gpt->control);
 
-	val = __raw_readl(&cur_gpt->counter);
-	lastinc = val / (MXC_CLK32 / CONFIG_SYS_HZ);
-	timestamp = 0;
+	gd->arch.tbl = __raw_readl(&cur_gpt->counter);
+	gd->arch.tbu = 0;
 
 	return 0;
 }
@@ -96,18 +75,11 @@ unsigned long long get_ticks(void)
 {
 	ulong now = __raw_readl(&cur_gpt->counter); /* current tick value */
 
-	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;
+	/* 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;
 }
 
 ulong get_timer_masked(void)