[ARM] MXC: rework timer/clock initialisation

- rename mxc_clocks_init to architecture specific versions. This
  allows us to have more than one architecture compiled in.
- call mxc_timer_init from clock initialisation instead from board
  code

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx1/clock.c

@@ -25,6 +25,7 @@
 
 #include <mach/clock.h>
 #include <mach/hardware.h>
+#include <mach/common.h>
 #include "crm_regs.h"
 
 static int _clk_enable(struct clk *clk)
@@ -594,7 +595,7 @@ static struct clk *mxc_clks[] = {
 	&rtc_clk,
 };
 
-int __init mxc_clocks_init(unsigned long fref)
+int __init mx1_clocks_init(unsigned long fref)
 {
 	struct clk **clkp;
 	unsigned int reg;
@@ -625,5 +626,7 @@ int __init mxc_clocks_init(unsigned long fref)
 	clk_enable(&hclk);
 	clk_enable(&fclk);
 
+	mxc_timer_init(&gpt_clk);
+
 	return 0;
 }

arch/arm/mach-mx1/mx1ads.c

@@ -118,8 +118,7 @@ static void __init mx1ads_init(void)
 
 static void __init mx1ads_timer_init(void)
 {
-	mxc_clocks_init(32000);
-	mxc_timer_init("gpt_clk");
+	mx1_clocks_init(32000);
 }
 
 struct sys_timer mx1ads_timer = {

arch/arm/mach-mx2/clock_imx27.c

@@ -1551,7 +1551,7 @@ static void __init probe_mxc_clocks(void)
  * must be called very early to get information about the
  * available clock rate when the timer framework starts
  */
-int __init mxc_clocks_init(unsigned long fref)
+int __init mx27_clocks_init(unsigned long fref)
 {
 	u32 cscr;
 	struct clk **clkp;
@@ -1593,5 +1593,8 @@ int __init mxc_clocks_init(unsigned long fref)
 #ifdef CONFIG_DEBUG_LL_CONSOLE
 	clk_enable(&uart1_clk[0]);
 #endif
+
+	mxc_timer_init(&gpt1_clk[0]);
+
 	return 0;
 }

arch/arm/mach-mx2/mx27ads.c

@@ -263,8 +263,7 @@ static void __init mx27ads_timer_init(void)
 	if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
 		fref = 27000000;
 
-	mxc_clocks_init(fref);
-	mxc_timer_init("gpt_clk.0");
+	mx27_clocks_init(fref);
 }
 
 struct sys_timer mx27ads_timer = {

arch/arm/mach-mx2/pcm038.c

@@ -230,8 +230,7 @@ static void __init pcm038_init(void)
 
 static void __init pcm038_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("gpt_clk.0");
+	mx27_clocks_init(26000000);
 }
 
 struct sys_timer pcm038_timer = {

arch/arm/mach-mx3/clock.c

@@ -25,6 +25,7 @@
 #include <linux/io.h>
 #include <mach/clock.h>
 #include <mach/hardware.h>
+#include <mach/common.h>
 #include <asm/div64.h>
 
 #include "crm_regs.h"
@@ -1071,7 +1072,7 @@ static struct clk *mxc_clks[] = {
 	&iim_clk,
 };
 
-int __init mxc_clocks_init(unsigned long fref)
+int __init mx31_clocks_init(unsigned long fref)
 {
 	u32 reg;
 	struct clk **clkp;
@@ -1121,6 +1122,8 @@ int __init mxc_clocks_init(unsigned long fref)
 		__raw_writel(reg, MXC_CCM_PMCR1);
 	}
 
+	mxc_timer_init(&ipg_clk);
+
 	return 0;
 }
 

arch/arm/mach-mx3/mx31ads.c

@@ -244,8 +244,7 @@ static void __init mxc_board_init(void)
 
 static void __init mx31ads_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 struct sys_timer mx31ads_timer = {

arch/arm/mach-mx3/mx31lite.c

@@ -82,8 +82,7 @@ static void __init mxc_board_init(void)
 
 static void __init mx31lite_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 struct sys_timer mx31lite_timer = {

arch/arm/mach-mx3/mx31moboard.c

@@ -120,8 +120,7 @@ void __init mx31moboard_map_io(void)
 
 static void __init mx31moboard_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 struct sys_timer mx31moboard_timer = {

arch/arm/mach-mx3/mx31pdk.c

@@ -91,8 +91,7 @@ static void __init mxc_board_init(void)
 
 static void __init mx31pdk_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 static struct sys_timer mx31pdk_timer = {

arch/arm/mach-mx3/pcm037.c

@@ -181,8 +181,7 @@ void __init pcm037_map_io(void)
 
 static void __init pcm037_timer_init(void)
 {
-	mxc_clocks_init(26000000);
-	mxc_timer_init("ipg_clk.0");
+	mx31_clocks_init(26000000);
 }
 
 struct sys_timer pcm037_timer = {

arch/arm/plat-mxc/include/mach/common.h

@@ -12,11 +12,14 @@
 #define __ASM_ARCH_MXC_COMMON_H__
 
 struct platform_device;
+struct clk;
 
 extern void mxc_map_io(void);
 extern void mxc_init_irq(void);
-extern void mxc_timer_init(const char *clk_timer);
-extern int mxc_clocks_init(unsigned long fref);
+extern void mxc_timer_init(struct clk *timer_clk);
+extern int mx1_clocks_init(unsigned long fref);
+extern int mx27_clocks_init(unsigned long fref);
+extern int mx31_clocks_init(unsigned long fref);
 extern int mxc_register_gpios(void);
 extern int mxc_register_device(struct platform_device *pdev, void *data);
 

arch/arm/plat-mxc/time.c

@@ -34,9 +34,6 @@
 static struct clock_event_device clockevent_mxc;
 static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
 
-/* clock source for the timer */
-static struct clk *timer_clk;
-
 /* clock source */
 
 static cycle_t mxc_get_cycles(void)
@@ -53,7 +50,7 @@ static struct clocksource clocksource_mxc = {
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-static int __init mxc_clocksource_init(void)
+static int __init mxc_clocksource_init(struct clk *timer_clk)
 {
 	unsigned int clock;
 
@@ -177,7 +174,7 @@ static struct clock_event_device clockevent_mxc = {
 	.rating		= 200,
 };
 
-static int __init mxc_clockevent_init(void)
+static int __init mxc_clockevent_init(struct clk *timer_clk)
 {
 	unsigned int clock;
 
@@ -197,14 +194,8 @@ static int __init mxc_clockevent_init(void)
 	return 0;
 }
 
-void __init mxc_timer_init(const char *clk_timer)
+void __init mxc_timer_init(struct clk *timer_clk)
 {
-	timer_clk = clk_get(NULL, clk_timer);
-	if (!timer_clk) {
-		printk(KERN_ERR"Cannot determine timer clock. Giving up.\n");
-		return;
-	}
-
 	clk_enable(timer_clk);
 
 	/*
@@ -219,10 +210,9 @@ void __init mxc_timer_init(const char *clk_timer)
 		     TIMER_BASE + MXC_TCTL);
 
 	/* init and register the timer to the framework */
-	mxc_clocksource_init();
-	mxc_clockevent_init();
+	mxc_clocksource_init(timer_clk);
+	mxc_clockevent_init(timer_clk);
 
 	/* Make irqs happen */
 	setup_irq(TIMER_INTERRUPT, &mxc_timer_irq);
 }
-