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authorBo Shen <voice.shen@atmel.com>2015-02-04 15:53:02 +0800
committerAndreas Bießmann <andreas.devel@googlemail.com>2015-04-01 01:04:27 +0200
commita2df3a37d78583f40e2d2053e5cf0ff689ac4aa4 (patch)
treed5fa6399b4f5839eb022da44ba38781f441a6ac4 /arch
parenta02c8a31bd34d0f771503783c7e4221e37ebd6d6 (diff)
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ARM: atmel: armv7: switch to use common timer functions
The commit 8dfafdd (Introduce common timer functions), add common timer functions, we can use them directly. Signed-off-by: Bo Shen <voice.shen@atmel.com> [rebase on current master] Sigend-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-at91/armv7/timer.c61
-rw-r--r--arch/arm/mach-at91/include/mach/sama5d3.h3
-rw-r--r--arch/arm/mach-at91/include/mach/sama5d4.h3
3 files changed, 6 insertions, 61 deletions
diff --git a/arch/arm/mach-at91/armv7/timer.c b/arch/arm/mach-at91/armv7/timer.c
index 19bf80b..a4a3817 100644
--- a/arch/arm/mach-at91/armv7/timer.c
+++ b/arch/arm/mach-at91/armv7/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/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 227ba80..b749cb3 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/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/mach-at91/include/mach/sama5d4.h b/arch/arm/mach-at91/include/mach/sama5d4.h
index f30cb5f..7773ace 100644
--- a/arch/arm/mach-at91/include/mach/sama5d4.h
+++ b/arch/arm/mach-at91/include/mach/sama5d4.h
@@ -193,6 +193,9 @@
#define cpu_is_sama5d44() (cpu_is_sama5d4() && \
(get_extension_chip_id() == ARCH_EXID_SAMA5D44))
+/* Timer */
+#define CONFIG_SYS_TIMER_COUNTER 0xfc06863c
+
/*
* No PMECC Galois table in ROM
*/