[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>

13 files changed, 30 insertions, 36 deletions

diff --git a/arch/arm/mach-mx1/clock.c b/arch/arm/mach-mx1/clock.c
index 3c464331b87..40a2274380a 100644
--- a/arch/arm/mach-mx1/clock.c
+++ b/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;
 }
diff --git a/arch/arm/mach-mx1/mx1ads.c b/arch/arm/mach-mx1/mx1ads.c
index be7dd75ebbe..09dc77bb481 100644
--- a/arch/arm/mach-mx1/mx1ads.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx2/clock_imx27.c b/arch/arm/mach-mx2/clock_imx27.c
index 047e71e6ea9..7b2c1122d9a 100644
--- a/arch/arm/mach-mx2/clock_imx27.c
+++ b/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;
 }
diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c
index 7721c470d5a..536bf64bc7c 100644
--- a/arch/arm/mach-mx2/mx27ads.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c
index 534fd9a4ff9..63cdef8565d 100644
--- a/arch/arm/mach-mx2/pcm038.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c
index 8486ea46d6c..8b41facb391 100644
--- a/arch/arm/mach-mx3/clock.c
+++ b/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;
 }
 
diff --git a/arch/arm/mach-mx3/mx31ads.c b/arch/arm/mach-mx3/mx31ads.c
index f902a7c37c3..f913999eedf 100644
--- a/arch/arm/mach-mx3/mx31ads.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c
index c4344007014..e61fad2f60f 100644
--- a/arch/arm/mach-mx3/mx31lite.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx3/mx31moboard.c b/arch/arm/mach-mx3/mx31moboard.c
index c29098af739..3d2773e4bc8 100644
--- a/arch/arm/mach-mx3/mx31moboard.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx3/mx31pdk.c b/arch/arm/mach-mx3/mx31pdk.c
index d464d068a4a..ac427edb4db 100644
--- a/arch/arm/mach-mx3/mx31pdk.c
+++ b/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 = {
diff --git a/arch/arm/mach-mx3/pcm037.c b/arch/arm/mach-mx3/pcm037.c
index 8cea8258722..3b5ba551cb1 100644
--- a/arch/arm/mach-mx3/pcm037.c
+++ b/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 = {
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 6350287a59b..2c08b8e14e3 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/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);
 
diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
index 758a1293bcf..eb93fd1789d 100644
--- a/arch/arm/plat-mxc/time.c
+++ b/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);
 }
-