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Commit 92b7eb8f authored by Ben Dooks's avatar Ben Dooks Committed by Russell King
Browse files

[ARM] 3628/1: S3C24XX: add get_rate call to struct clk 



Patch from Ben Dooks

Add a get_rate call to allow an given clock
to over-ride the clk_get_rate() call.

This provides support for clocks which rely on
division of their parent to correctly report
their frequency when the parent can also change.

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 99c13853

arch/arm/mach-s3c2410/clock.c

+5 −2
Original line number Diff line number Diff line
@@ -148,8 +148,11 @@ unsigned long clk_get_rate(struct clk *clk) 
	if (clk->rate != 0)

		return clk->rate;



	while (clk->parent != NULL && clk->rate == 0)

		clk = clk->parent;

	if (clk->get_rate != NULL)

		return (clk->get_rate)(clk);



	if (clk->parent != NULL)

		return clk_get_rate(clk->parent);



	return clk->rate;

}

arch/arm/mach-s3c2410/clock.h

+1 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ struct clk { 


	int		    (*enable)(struct clk *, int enable);

	int		    (*set_rate)(struct clk *c, unsigned long rate);

	unsigned long	    (*get_rate)(struct clk *c);

	unsigned long	    (*round_rate)(struct clk *c, unsigned long rate);

	int		    (*set_parent)(struct clk *c, struct clk *parent);

};