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sh: add shared clock framework frequency table code

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Add SuperH-specific clock framework helper functions:
- clk_rate_table_build() - build cpufreq table from divisors/multipliers
- clk_rate_table_round() - use cpufreq table to find matching frequency

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2009-05-25 08:10:28 +00:00
committed by Paul Mundt
parent c9904dd159
commit c94a85746f
2 changed files with 93 additions and 0 deletions
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18
arch/sh/include/asm/clock.h
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@@ -100,4 +100,22 @@ enum clk_sh_algo_id {
IP_N1,
};
struct clk_div_mult_table {
unsigned int *divisors;
unsigned int nr_divisors;
unsigned int *multipliers;
unsigned int nr_multipliers;
};
struct cpufreq_frequency_table;
void clk_rate_table_build(struct clk *clk,
struct cpufreq_frequency_table *freq_table,
int nr_freqs,
struct clk_div_mult_table *src_table,
unsigned long *bitmap);
long clk_rate_table_round(struct clk *clk,
struct cpufreq_frequency_table *freq_table,
unsigned long rate);
#endif /* __ASM_SH_CLOCK_H */