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m68knommu: introduce basic clk infrastructure

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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>
This commit is contained in:
Greg Ungerer 2009-03-04 10:43:06 +10:00
parent a5505464c7
commit facdf0ed4f
2 changed files with 41 additions and 1 deletions
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2
arch/m68knommu/platform/coldfire/Makefile
View File

@ -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

40
arch/m68knommu/platform/coldfire/clk.c Normal file
View File

@ -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;
}
/***************************************************************************/