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Commit f5942c76 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Simon Horman
Browse files

ARM: shmobile: add struct clk_ratio and fixed ratio clock macro 



Renesas chip has many clocks inside,
and some of them are using fixed ratio via parent clock.
Current shmobile clock code is using own divX_recalc function
and divX_clk_ops.
This patch can reduce these code

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent b3186c68

arch/arm/mach-shmobile/clock.c

+13 −0
Original line number Original line Diff line number Diff line
@@ -23,6 +23,19 @@ 
#include <linux/init.h>

#include <linux/init.h>

#include <linux/sh_clk.h>

#include <linux/sh_clk.h>

#include <linux/export.h>

#include <linux/export.h>

#include <mach/clock.h>

#include <mach/common.h>



unsigned long shmobile_fixed_ratio_clk_recalc(struct clk *clk)

{

	struct clk_ratio *p = clk->priv;



	return clk->parent->rate / p->div * p->mul;

};



struct sh_clk_ops shmobile_fixed_ratio_clk_ops = {

	.recalc	= shmobile_fixed_ratio_clk_recalc,

};





int __init shmobile_clk_init(void)

int __init shmobile_clk_init(void)

{

{

arch/arm/mach-shmobile/include/mach/clock.h

0 → 100644
+39 −0
Original line number Original line Diff line number Diff line 
#ifndef CLOCK_H

#define CLOCK_H



unsigned long shmobile_fixed_ratio_clk_recalc(struct clk *clk);

extern struct sh_clk_ops shmobile_fixed_ratio_clk_ops;



/* clock ratio */

struct clk_ratio {

	int mul;

	int div;

};



#define SH_CLK_RATIO(name, m, d)		\

static struct clk_ratio name ##_ratio = {	\

	.mul = m,				\

	.div = d,				\

}



#define SH_FIXED_RATIO_CLKg(name, p, r)	\

struct clk name = {			\

	.parent	= &p,				\

	.ops	= &shmobile_fixed_ratio_clk_ops,\

	.priv	= &r ## _ratio,			\

}



#define SH_FIXED_RATIO_CLK(name, p, r)		\

static SH_FIXED_RATIO_CLKg(name, p, r);



#define SH_FIXED_RATIO_CLK_SET(name, p, m, d)	\

	SH_CLK_RATIO(name, m, d);		\

	SH_FIXED_RATIO_CLK(name, p, name);



#define SH_CLK_SET_RATIO(p, m, d)	\

{			\

	(p)->mul = m;	\

	(p)->div = d;	\

}



#endif