[PATCH 1/2] clk: rename clk_core_get_boundaries() to clk_hw_get_boundaries() and expose
From: Alexander Kochetkov <hidden>
Date: 2017-12-21 16:09:10
Also in:
linux-clk, linux-rockchip, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
In order to provide a way to know clock limits to clock providers.
The patch is needed for fixing commit 5d890c2df900 ("clk: rockchip:
add special approximation to fix up fractional clk's jitter").
Custom approximation function introduced by the patch, can
select frequency rate larger than one configured using
clk_set_max_rate().
Signed-off-by: Alexander Kochetkov <redacted>
---
drivers/clk/clk.c | 14 ++++++++------
include/linux/clk-provider.h | 2 ++
2 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index c8d83ac..8943aac 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c@@ -421,10 +421,11 @@ struct clk *__clk_lookup(const char *name) return !core ? NULL : core->hw->clk; } -static void clk_core_get_boundaries(struct clk_core *core, - unsigned long *min_rate, - unsigned long *max_rate) +void clk_hw_get_boundaries(struct clk_hw *hw, + unsigned long *min_rate, + unsigned long *max_rate) { + struct clk_core *core = hw->core; struct clk *clk_user; *min_rate = core->min_rate;
@@ -436,6 +437,7 @@ static void clk_core_get_boundaries(struct clk_core *core, hlist_for_each_entry(clk_user, &core->clks, clks_node) *max_rate = min(*max_rate, clk_user->max_rate); } +EXPORT_SYMBOL_GPL(clk_hw_get_boundaries); void clk_hw_set_rate_range(struct clk_hw *hw, unsigned long min_rate, unsigned long max_rate)
@@ -894,7 +896,7 @@ unsigned long clk_hw_round_rate(struct clk_hw *hw, unsigned long rate) int ret; struct clk_rate_request req; - clk_core_get_boundaries(hw->core, &req.min_rate, &req.max_rate); + clk_hw_get_boundaries(hw, &req.min_rate, &req.max_rate); req.rate = rate; ret = clk_core_round_rate_nolock(hw->core, &req);
@@ -924,7 +926,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate) clk_prepare_lock(); - clk_core_get_boundaries(clk->core, &req.min_rate, &req.max_rate); + clk_hw_get_boundaries(clk->core->hw, &req.min_rate, &req.max_rate); req.rate = rate; ret = clk_core_round_rate_nolock(clk->core, &req);
@@ -1353,7 +1355,7 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *core, if (parent) best_parent_rate = parent->rate; - clk_core_get_boundaries(core, &min_rate, &max_rate); + clk_hw_get_boundaries(core->hw, &min_rate, &max_rate); /* find the closest rate and parent clk/rate */ if (core->ops->determine_rate) {
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 5100ec1..2f10999 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h@@ -755,6 +755,8 @@ int __clk_mux_determine_rate_closest(struct clk_hw *hw, void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent); void clk_hw_set_rate_range(struct clk_hw *hw, unsigned long min_rate, unsigned long max_rate); +void clk_hw_get_boundaries(struct clk_hw *hw, unsigned long *min_rate, + unsigned long *max_rate); static inline void __clk_hw_set_clk(struct clk_hw *dst, struct clk_hw *src) {
--
1.7.9.5