[PATCH 02/10] arm: zynq: Move timer to clocksource interface
Michal Simek
michal.simek at xilinx.com
Mon Mar 25 09:53:08 EDT 2013
Use clocksource timer initialization.
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
arch/arm/mach-zynq/common.c | 2 +-
arch/arm/mach-zynq/common.h | 2 --
arch/arm/mach-zynq/timer.c | 27 ++++++++-------------------
3 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index 76493b0..68e0907 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -78,7 +78,7 @@ static void __init xilinx_zynq_timer_init(void)
xilinx_zynq_clocks_init(slcr);
- xttcps_timer_init();
+ clocksource_of_init();
}
/**
diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
index 8b4dbba..5050bb1 100644
--- a/arch/arm/mach-zynq/common.h
+++ b/arch/arm/mach-zynq/common.h
@@ -17,6 +17,4 @@
#ifndef __MACH_ZYNQ_COMMON_H__
#define __MACH_ZYNQ_COMMON_H__
-void __init xttcps_timer_init(void);
-
#endif
diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 896ba3e..3b1faed 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -22,7 +22,6 @@
#include <linux/of_irq.h>
#include <linux/slab.h>
#include <linux/clk-provider.h>
-#include "common.h"
/*
* This driver configures the 2 16-bit count-up timers as follows:
@@ -387,11 +386,17 @@ static void __init zynq_ttc_setup_clockevent(struct clk *clk,
* Initializes the timer hardware and register the clock source and clock event
* timers with Linux kernal timer framework
*/
-static void __init xttcps_timer_init_of(struct device_node *timer)
+static void __init xttcps_timer_init(struct device_node *timer)
{
unsigned int irq;
void __iomem *timer_baseaddr;
struct clk *clk;
+ static int initialized;
+
+ if (initialized)
+ return;
+
+ initialized = 1;
/*
* Get the 1st Triple Timer Counter (TTC) block from the device tree
@@ -422,20 +427,4 @@ static void __init xttcps_timer_init_of(struct device_node *timer)
pr_info("%s #0 at %p, irq=%d\n", timer->name, timer_baseaddr, irq);
}
-
-void __init xttcps_timer_init(void)
-{
- const char * const timer_list[] = {
- "xlnx,ttc",
- NULL
- };
- struct device_node *timer;
-
- timer = of_find_compatible_node(NULL, NULL, timer_list[0]);
- if (!timer) {
- pr_err("ERROR: no compatible timer found\n");
- BUG();
- }
-
- xttcps_timer_init_of(timer);
-}
+CLOCKSOURCE_OF_DECLARE(zynq, "xlnx,ttc", xttcps_timer_init);
--
1.7.9.7
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