[U-Boot] [PATCH v2 8/9] ARM: tegra: convert to common timer code

Rob Herring
2013-10-04T15:22:47Z

Convert tegra to use the commmon timer code.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
---
arch/arm/cpu/tegra-common/Makefile | 2 +-
arch/arm/cpu/tegra-common/timer.c | 95 --------------------------------------
include/configs/tegra-common.h | 3 ++
3 files changed, 4 insertions(+), 96 deletions(-)
delete mode 100644 arch/arm/cpu/tegra-common/timer.c

diff --git a/arch/arm/cpu/tegra-common/Makefile b/arch/arm/cpu/tegra-common/Makefile
index 1b6cdf7..89b2210 100644
--- a/arch/arm/cpu/tegra-common/Makefile
+++ b/arch/arm/cpu/tegra-common/Makefile
@@ -12,7 +12,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)libcputegra-common.o

SOBJS += lowlevel_init.o
-COBJS-y += ap.o board.o sys_info.o timer.o clock.o cache.o
+COBJS-y += ap.o board.o sys_info.o clock.o cache.o

SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS-y))
diff --git a/arch/arm/cpu/tegra-common/timer.c b/arch/arm/cpu/tegra-common/timer.c
deleted file mode 100644
index d0f783e..0000000
--- a/arch/arm/cpu/tegra-common/timer.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * (C) Copyright 2010,2011
- * NVIDIA Corporation <www.nvidia.com>
- *
- * (C) Copyright 2008
- * Texas Instruments
- *
- * Richard Woodruff <r-woodruff2@ti.com>
- * Syed Moahmmed Khasim <khasim@ti.com>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- * Alex Zuepke <azu@sysgo.de>
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/tegra.h>
-#include <asm/arch-tegra/timer.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* counter runs at 1MHz */
-#define TIMER_CLK 1000000
-#define TIMER_LOAD_VAL 0xffffffff
-
-/* timer without interrupts */
-ulong get_timer(ulong base)
-{
- return get_timer_masked() - base;
-}
-
-/* delay x useconds */
-void __udelay(unsigned long usec)
-{
- long tmo = usec * (TIMER_CLK / 1000) / 1000;
- unsigned long now, last = timer_get_us();
-
- while (tmo > 0) {
- now = timer_get_us();
- if (last > now) /* count up timer overflow */
- tmo -= TIMER_LOAD_VAL - last + now;
- else
- tmo -= now - last;
- last = now;
- }
-}
-
-ulong get_timer_masked(void)
-{
- ulong now;
-
- /* current tick value */
- now = timer_get_us() / (TIMER_CLK / CONFIG_SYS_HZ);
-
- if (now >= gd->arch.lastinc) /* normal mode (non roll) */
- /* move stamp forward with absolute diff ticks */
- gd->arch.tbl += (now - gd->arch.lastinc);
- else /* we have rollover of incrementer */
- gd->arch.tbl += ((TIMER_LOAD_VAL / (TIMER_CLK / CONFIG_SYS_HZ))
- - gd->arch.lastinc) + now;
- gd->arch.lastinc = now;
- return gd->arch.tbl;
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
- return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk(void)
-{
- return CONFIG_SYS_HZ;
-}
-
-unsigned long timer_get_us(void)
-{
- struct timerus *timer_base = (struct timerus *)NV_PA_TMRUS_BASE;
-
- return readl(&timer_base->cntr_1us);
-}
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index ba6c6bb..d4361a5 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -19,6 +19,9 @@

#include <asm/arch/tegra.h> /* get chip and board defs */

+#define CONFIG_SYS_TIMER_RATE 1000000
+#define CONFIG_SYS_TIMER_COUNTER NV_PA_TMRUS_BASE
+
/*
* Display CPU and Board information
*/
--
1.8.1.2