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authorJames Hogan <james.hogan@imgtec.com>2013-07-29 15:25:02 +0400
committerMike Turquette <mturquette@linaro.org>2013-08-19 23:27:18 +0400
commite366fdd72529c545ccf327569ee250c1673be221 (patch)
tree69139adc59e6ab101555f09544669793c385c250 /include/linux/clk-provider.h
parent819c1de344c5b8350bffd35be9a0fa74541292d3 (diff)
downloadlinux-e366fdd72529c545ccf327569ee250c1673be221.tar.xz
clk: clk-mux: implement remuxing on set_rate
Implement clk-mux remuxing if the CLK_SET_RATE_NO_REPARENT flag isn't set. This implements determine_rate for clk-mux to propagate to each parent and to choose the best one (like clk-divider this chooses the parent which provides the fastest rate <= the requested rate). The determine_rate op is implemented as a core helper function so that it can be easily used by more complex clocks which incorporate muxes. Signed-off-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Mike Turquette <mturquette@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'include/linux/clk-provider.h')
-rw-r--r--include/linux/clk-provider.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 5c0bc3904c9b..1f0285b2f422 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -436,6 +436,9 @@ unsigned long __clk_get_flags(struct clk *clk);
bool __clk_is_prepared(struct clk *clk);
bool __clk_is_enabled(struct clk *clk);
struct clk *__clk_lookup(const char *name);
+long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *best_parent_rate,
+ struct clk **best_parent_p);
/*
* FIXME clock api without lock protection