ARM: davinci: pass clock as parameter to davinci_timer_init()

This changes davinci_timer_init() so that we pass the clock as a
parameter instead of using clk_get(). This is done in preparation
for converting to the common clock framework.

It removes the requirement that we have to have a clock with con_id
of "timer0", which will be good for DT bindings since clock-names =
"timer0" doesn't really make sense.

Also, drop use of extern in header file since we are touching the
definition.

Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/da830.c

@@ -1224,5 +1224,5 @@ void __init da830_init(void)
 void __init da830_init_time(void)
 {
 	davinci_clk_init(da830_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timerp64_0_clk);
 }

arch/arm/mach-davinci/da850.c

@@ -1396,5 +1396,5 @@ void __init da850_init(void)
 void __init da850_init_time(void)
 {
 	davinci_clk_init(da850_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timerp64_0_clk);
 }

arch/arm/mach-davinci/dm355.c

@@ -1047,7 +1047,7 @@ void __init dm355_init(void)
 void __init dm355_init_time(void)
 {
 	davinci_clk_init(dm355_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timer0_clk);
 }
 
 int __init dm355_init_video(struct vpfe_config *vpfe_cfg,

arch/arm/mach-davinci/dm365.c

@@ -1172,7 +1172,7 @@ void __init dm365_init(void)
 void __init dm365_init_time(void)
 {
 	davinci_clk_init(dm365_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timer0_clk);
 }
 
 static struct resource dm365_vpss_resources[] = {

arch/arm/mach-davinci/dm644x.c

@@ -935,7 +935,7 @@ void __init dm644x_init(void)
 void __init dm644x_init_time(void)
 {
 	davinci_clk_init(dm644x_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timer0_clk);
 }
 
 int __init dm644x_init_video(struct vpfe_config *vpfe_cfg,

arch/arm/mach-davinci/dm646x.c

@@ -957,7 +957,7 @@ void __init dm646x_init_time(unsigned long ref_clk_rate,
 	ref_clk.rate = ref_clk_rate;
 	aux_clkin.rate = aux_clkin_rate;
 	davinci_clk_init(dm646x_clks);
-	davinci_timer_init();
+	davinci_timer_init(&timer0_clk);
 }
 
 static int __init dm646x_init_devices(void)

arch/arm/mach-davinci/include/mach/common.h

@@ -12,11 +12,12 @@
 #ifndef __ARCH_ARM_MACH_DAVINCI_COMMON_H
 #define __ARCH_ARM_MACH_DAVINCI_COMMON_H
 
+#include <linux/clk.h>
 #include <linux/compiler.h>
 #include <linux/types.h>
 #include <linux/reboot.h>
 
-extern void davinci_timer_init(void);
+void davinci_timer_init(struct clk *clk);
 
 extern void davinci_irq_init(void);
 extern void __iomem *davinci_intc_base;

arch/arm/mach-davinci/time.c

@@ -334,10 +334,8 @@ static struct clock_event_device clockevent_davinci = {
 	.set_state_oneshot	= davinci_set_oneshot,
 };
 
-
-void __init davinci_timer_init(void)
+void __init davinci_timer_init(struct clk *timer_clk)
 {
-	struct clk *timer_clk;
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
 	unsigned int clockevent_id;
 	unsigned int clocksource_id;
@@ -373,7 +371,6 @@ void __init davinci_timer_init(void)
 		}
 	}
 
-	timer_clk = clk_get(NULL, "timer0");
 	BUG_ON(IS_ERR(timer_clk));
 	clk_prepare_enable(timer_clk);