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authorPaul Mundt <lethal@linux-sh.org>2010-10-15 18:33:24 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-10-15 18:33:24 +0900
commit8e122db61c98debbc35e26dd29504958cbcf2cbb (patch)
tree4323f71c79fd3df0191c6489e84b50089797101f /include/linux/sh_clk.h
parentf586903d27e2503a3e7d427b3d665bbaf1b7f4d4 (diff)
downloadop-kernel-dev-8e122db61c98debbc35e26dd29504958cbcf2cbb.zip
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sh: clkfwk: Add a helper for rate rounding by divisor ranges.
This adds a new clk_rate_div_range_round() for implementing rate rounding by divisor ranges. This can be used trivially by clocks that support arbitrary ranged divisors without the need for rate table construction. This should only be used by clocks that both have large divisor ranges in addition to clocks that will never be arbitrarily scaled, as the lack of a backing frequency table will prevent cpufreq from being able to do much of anything with them. Primarily intended for use as a ->recalc helper. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/linux/sh_clk.h')
-rw-r--r--include/linux/sh_clk.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h
index 49f6e9b..4dca992 100644
--- a/include/linux/sh_clk.h
+++ b/include/linux/sh_clk.h
@@ -119,6 +119,9 @@ int clk_rate_table_find(struct clk *clk,
struct cpufreq_frequency_table *freq_table,
unsigned long rate);
+long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,
+ unsigned int div_max, unsigned long rate);
+
#define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags) \
{ \
.parent = _parent, \
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