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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-09-19 18:51:13 -0700
committerPaul Mundt <lethal@linux-sh.org>2011-11-05 00:49:27 +0900
commitdd2c0ca1b153b555c09fd8e08f6842e12cf8e87b (patch)
tree1c7490f128aa6153d8d42f9bb735cd4bd3aa16f2 /drivers/sh/clk
parent1a67a573b8d9f02211f36fbab50f6265dc49384a (diff)
downloadlinux-dd2c0ca1b153b555c09fd8e08f6842e12cf8e87b.tar.gz
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: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/sh/clk')
-rw-r--r--drivers/sh/clk/core.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index dc8d022c07a..352036b1f9a 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)