2 files changed, 23 insertions, 0 deletions

diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index dc8d022c07a1..352036b1f9a2 100644
--- a/drivers/sh/clk/core.c
+++ b/drivers/sh/clk/core.c
@@ -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);
 }
 
+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,
                         struct cpufreq_frequency_table *freq_table,
                         unsigned long rate)
diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h
index 3ccf18648d0a..9237c299641c 100644
--- a/include/linux/sh_clk.h
+++ b/include/linux/sh_clk.h
@@ -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,
                               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,
                       unsigned long *best_freq, unsigned long *parent_freq,
                       unsigned int div_min, unsigned int div_max);