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Commit dd2c0ca1 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Paul Mundt
Browse files

sh: clkfwk: add clk_rate_mult_range_round() 



This provides a clk_rate_mult_range_round() helper for use by some of the
CPG PLL ranged multipliers, following the same approach as used by the
div ranges.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 1a67a573

drivers/sh/clk/core.c

+20 −0
Original line number Original line Diff line number Diff line
@@ -173,6 +173,26 @@ long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, 
	return clk_rate_round_helper(&div_range_round);

	return clk_rate_round_helper(&div_range_round);

}

}





static long clk_rate_mult_range_iter(unsigned int pos,

				      struct clk_rate_round_data *rounder)

{

	return clk_get_rate(rounder->arg) * pos;

}



long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min,

			       unsigned int mult_max, unsigned long rate)

{

	struct clk_rate_round_data mult_range_round = {

		.min	= mult_min,

		.max	= mult_max,

		.func	= clk_rate_mult_range_iter,

		.arg	= clk_get_parent(clk),

		.rate	= rate,

	};



	return clk_rate_round_helper(&mult_range_round);

}



int clk_rate_table_find(struct clk *clk,

int clk_rate_table_find(struct clk *clk,

			struct cpufreq_frequency_table *freq_table,

			struct cpufreq_frequency_table *freq_table,

			unsigned long rate)

			unsigned long rate)

include/linux/sh_clk.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -94,6 +94,9 @@ int clk_rate_table_find(struct clk *clk, 
long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,

long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,

			      unsigned int div_max, unsigned long rate);

			      unsigned int div_max, unsigned long rate);





long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min,

			       unsigned int mult_max, unsigned long rate);



long clk_round_parent(struct clk *clk, unsigned long target,

long clk_round_parent(struct clk *clk, unsigned long target,

		      unsigned long *best_freq, unsigned long *parent_freq,

		      unsigned long *best_freq, unsigned long *parent_freq,

		      unsigned int div_min, unsigned int div_max);

		      unsigned int div_min, unsigned int div_max);