m68knommu: introduce basic clk infrastructure

Create basic support for clk API. Recent changes to the FEC driver
(used by many ColdFire family parts) need this. Initially only
supports getting the master clock frequency.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

diff --git a/arch/m68knommu/platform/coldfire/Makefile b/arch/m68knommu/platform/coldfire/Makefile
index 4f416a91a829b38c9f130ecad667307ea0ef98f6..1bcb9372353fe8496966ce50f7a67cf2d32f80db 100644 (file)
--- a/arch/m68knommu/platform/coldfire/Makefile
+++ b/arch/m68knommu/platform/coldfire/Makefile
@@ -14,7 +14,7 @@
 
 asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
 
-obj-$(CONFIG_COLDFIRE) += dma.o entry.o vectors.o
+obj-$(CONFIG_COLDFIRE) += clk.o dma.o entry.o vectors.o
 obj-$(CONFIG_M5206)    += timers.o
 obj-$(CONFIG_M5206e)   += timers.o
 obj-$(CONFIG_M520x)    += pit.o

diff --git a/arch/m68knommu/platform/coldfire/clk.c b/arch/m68knommu/platform/coldfire/clk.c
new file mode 100644 (file)
index 0000000..7cdbf44
--- /dev/null
+++ b/arch/m68knommu/platform/coldfire/clk.c
@@ -0,0 +1,40 @@
+/***************************************************************************/
+
+/*
+ *     clk.c -- general ColdFire CPU kernel clk handling
+ *
+ *     Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <asm/coldfire.h>
+
+/***************************************************************************/
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+       return NULL;
+}
+
+int clk_enable(struct clk *clk)
+{
+       return 0;
+}
+
+void clk_disable(struct clk *clk)
+{
+}
+
+void clk_put(struct clk *clk)
+{
+}
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+       return MCF_CLK;
+}
+
+/***************************************************************************/