sh: add shared clock framework frequency table code

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>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h
index 64c93cb3d685..60d5d2bc714a 100644
--- a/arch/sh/include/asm/clock.h
+++ b/arch/sh/include/asm/clock.h
@@ -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 */