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Commit 52585ccd authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Eric Miao
Browse files

ARM: pxa: add clk_set_rate() 



Since there're mulitple clock rates in some device controllers, enable
clk_set_rate() for this usage.

Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent 4e234cc0

arch/arm/mach-mmp/clock.c

+15 −0
Original line number Diff line number Diff line
@@ -88,3 +88,18 @@ unsigned long clk_get_rate(struct clk *clk) 
	return rate;

}

EXPORT_SYMBOL(clk_get_rate);



int clk_set_rate(struct clk *clk, unsigned long rate)

{

	unsigned long flags;

	int ret = -EINVAL;



	if (clk->ops->setrate) {

		spin_lock_irqsave(&clocks_lock, flags);

		ret = clk->ops->setrate(clk, rate);

		spin_unlock_irqrestore(&clocks_lock, flags);

	}



	return ret;

}

EXPORT_SYMBOL(clk_set_rate);

arch/arm/mach-mmp/clock.h

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ struct clkops { 
	void			(*enable)(struct clk *);

	void			(*disable)(struct clk *);

	unsigned long		(*getrate)(struct clk *);

	int			(*setrate)(struct clk *, unsigned long);

};



struct clk {

arch/arm/mach-pxa/clock.c

+15 −0
Original line number Diff line number Diff line
@@ -53,6 +53,21 @@ unsigned long clk_get_rate(struct clk *clk) 
}

EXPORT_SYMBOL(clk_get_rate);



int clk_set_rate(struct clk *clk, unsigned long rate)

{

	unsigned long flags;

	int ret = -EINVAL;



	if (clk->ops->setrate) {

		spin_lock_irqsave(&clocks_lock, flags);

		ret = clk->ops->setrate(clk, rate);

		spin_unlock_irqrestore(&clocks_lock, flags);

	}



	return ret;

}

EXPORT_SYMBOL(clk_set_rate);



void clk_dummy_enable(struct clk *clk)

{

}

arch/arm/mach-pxa/clock.h

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ struct clkops { 
	void			(*enable)(struct clk *);

	void			(*disable)(struct clk *);

	unsigned long		(*getrate)(struct clk *);

	int			(*setrate)(struct clk *, unsigned long);

};



struct clk {