powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function

So far, MPC512x used mpc512x_find_ips_freq() to get the bus frequency,
while MPC52xx used mpc52xx_find_ipb_freq().  Despite the different
clock names (IPS vs. IPB) the code was identical.

Use common code for both processor families.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

4 files changed, 2 insertions, 56 deletions

diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c
index 1bcff94eb924..f4c4c6f807d7 100644
--- a/arch/powerpc/platforms/512x/clock.c
+++ b/arch/powerpc/platforms/512x/clock.c
@@ -24,7 +24,7 @@
 #include <linux/io.h>
 
 #include <linux/of_platform.h>
-#include <asm/mpc512x.h>
+#include <asm/mpc5xxx.h>
 #include <asm/clk_interface.h>
 
 #undef CLK_DEBUG
diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h
index 9c03693cb009..22a5352407e0 100644
--- a/arch/powerpc/platforms/512x/mpc512x.h
+++ b/arch/powerpc/platforms/512x/mpc512x.h
@@ -11,7 +11,6 @@
 
 #ifndef __MPC512X_H__
 #define __MPC512X_H__
-extern unsigned long mpc512x_find_ips_freq(struct device_node *node);
 extern void __init mpc512x_init_IRQ(void);
 void __init mpc512x_declare_of_platform_devices(void);
 #endif				/* __MPC512X_H__ */
diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c
index d8cd579f3191..434d683df5a0 100644
--- a/arch/powerpc/platforms/512x/mpc512x_shared.c
+++ b/arch/powerpc/platforms/512x/mpc512x_shared.c
@@ -24,29 +24,6 @@
 
 #include "mpc512x.h"
 
-unsigned long
-mpc512x_find_ips_freq(struct device_node *node)
-{
-	struct device_node *np;
-	const unsigned int *p_ips_freq = NULL;
-
-	of_node_get(node);
-	while (node) {
-		p_ips_freq = of_get_property(node, "bus-frequency", NULL);
-		if (p_ips_freq)
-			break;
-
-		np = of_get_parent(node);
-		of_node_put(node);
-		node = np;
-	}
-	if (node)
-		of_node_put(node);
-
-	return p_ips_freq ? *p_ips_freq : 0;
-}
-EXPORT_SYMBOL(mpc512x_find_ips_freq);
-
 void __init mpc512x_init_IRQ(void)
 {
 	struct device_node *np;
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 8e3dd5a0f228..a46bad0c2339 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -47,36 +47,6 @@ static DEFINE_SPINLOCK(mpc52xx_lock);
 static struct mpc52xx_gpt __iomem *mpc52xx_wdt;
 static struct mpc52xx_cdm __iomem *mpc52xx_cdm;
 
-/**
- * 	mpc52xx_find_ipb_freq - Find the IPB bus frequency for a device
- * 	@node:	device node
- *
- * 	Returns IPB bus frequency, or 0 if the bus frequency cannot be found.
- */
-unsigned int
-mpc52xx_find_ipb_freq(struct device_node *node)
-{
-	struct device_node *np;
-	const unsigned int *p_ipb_freq = NULL;
-
-	of_node_get(node);
-	while (node) {
-		p_ipb_freq = of_get_property(node, "bus-frequency", NULL);
-		if (p_ipb_freq)
-			break;
-
-		np = of_get_parent(node);
-		of_node_put(node);
-		node = np;
-	}
-	if (node)
-		of_node_put(node);
-
-	return p_ipb_freq ? *p_ipb_freq : 0;
-}
-EXPORT_SYMBOL(mpc52xx_find_ipb_freq);
-
-
 /*
  * Configure the XLB arbiter settings to match what Linux expects.
  */
@@ -221,7 +191,7 @@ unsigned int mpc52xx_get_xtal_freq(struct device_node *node)
 	if (!mpc52xx_cdm)
 		return 0;
 
-	freq = mpc52xx_find_ipb_freq(node);
+	freq = mpc5xxx_get_bus_frequency(node);
 	if (!freq)
 		return 0;