Patchwork [U-Boot,8/9] ARM: socfpga: convert to common timer code

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Submitter Rob Herring
Date Sept. 8, 2013, 8:12 p.m.
Message ID <1378671174-18535-9-git-send-email-robherring2@gmail.com>
Download mbox | patch
Permalink /patch/273460/
State Superseded
Delegated to: Tom Rini
Headers show

Comments

Rob Herring - Sept. 8, 2013, 8:12 p.m.
From: Rob Herring <rob.herring@calxeda.com>

Convert socfpga to use the commmon timer code.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
---
 arch/arm/cpu/armv7/socfpga/timer.c | 72 --------------------------------------
 include/configs/socfpga_cyclone5.h |  3 +-
 2 files changed, 2 insertions(+), 73 deletions(-)

Patch

diff --git a/arch/arm/cpu/armv7/socfpga/timer.c b/arch/arm/cpu/armv7/socfpga/timer.c
index 09f6f14..58fc789 100644
--- a/arch/arm/cpu/armv7/socfpga/timer.c
+++ b/arch/arm/cpu/armv7/socfpga/timer.c
@@ -8,8 +8,6 @@ 
 #include <asm/io.h>
 #include <asm/arch/timer.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 static const struct socfpga_timer *timer_base = (void *)CONFIG_SYS_TIMERBASE;
 
 /*
@@ -22,73 +20,3 @@  int timer_init(void)
 	writel(readl(&timer_base->ctrl) | 0x3, &timer_base->ctrl);
 	return 0;
 }
-
-static u32 read_timer(void)
-{
-	return readl(&timer_base->curr_val);
-}
-
-/*
- * Delay x useconds
- */
-void __udelay(unsigned long usec)
-{
-	unsigned long now, last;
-	/*
-	 * get the tmo value based on timer clock speed
-	 * tmo = delay required / period of timer clock
-	 */
-	long tmo = usec * CONFIG_TIMER_CLOCK_KHZ / 1000;
-
-	last = read_timer();
-	while (tmo > 0) {
-		now = read_timer();
-		if (last >= now)
-			/* normal mode (non roll) */
-			tmo -= last - now;
-		else
-			/* we have overflow of the count down timer */
-			tmo -= TIMER_LOAD_VAL - last + now;
-		last = now;
-	}
-}
-
-/*
- * Get the timer value
- */
-ulong get_timer(ulong base)
-{
-	return get_timer_masked() - base;
-}
-
-/*
- * Timer : get the time difference
- * Unit of tick is based on the CONFIG_SYS_HZ
- */
-ulong get_timer_masked(void)
-{
-	/* current tick value */
-	ulong now = read_timer() / (CONFIG_TIMER_CLOCK_KHZ/CONFIG_SYS_HZ);
-	if (gd->arch.lastinc >= now) {
-		/* normal mode (non roll) */
-		/* move stamp forward with absolute diff ticks */
-		gd->arch.tbl += gd->arch.lastinc - now;
-	} else {
-		/* we have overflow of the count down timer */
-		gd->arch.tbl += TIMER_LOAD_VAL - gd->arch.lastinc + now;
-	}
-	gd->arch.lastinc = now;
-	return gd->arch.tbl;
-}
-
-/*
- * Reset the timer
- */
-void reset_timer(void)
-{
-	/* capture current decrementer value time */
-	gd->arch.lastinc = read_timer() /
-				(CONFIG_TIMER_CLOCK_KHZ / CONFIG_SYS_HZ);
-	/* start "advancing" time stamp from 0 */
-	gd->arch.tbl = 0;
-}
diff --git a/include/configs/socfpga_cyclone5.h b/include/configs/socfpga_cyclone5.h
index 450b5e6..aecb217 100644
--- a/include/configs/socfpga_cyclone5.h
+++ b/include/configs/socfpga_cyclone5.h
@@ -24,7 +24,8 @@ 
 #define CONFIG_SYS_TEXT_BASE		0x08000040
 #define V_NS16550_CLK			1000000
 #define CONFIG_BAUDRATE			57600
-#define CONFIG_TIMER_CLOCK_KHZ		2400
+#define CONFIG_SYS_TIMER_RATE		2400000
+#define CONFIG_SYS_TIMER_COUNTER	(CONFIG_SYS_TIMERBASE + 0x4)
 #define CONFIG_SYS_LOAD_ADDR		0x7fc0
 
 /* Console I/O Buffer Size */