clk: Add clk_hw_*() APIs for use by clk providers

[firefly-linux-kernel-4.4.55.git] / drivers / clk / clk.c

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 4912c2e55e2c475c7f6c6763e9a3b9891cdbd521..a30fd30f49489b2d3cda468ff3205d891615401b 100644 (file)
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -278,6 +278,12 @@ const char *__clk_get_name(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(__clk_get_name);
 
+const char *clk_hw_get_name(struct clk_hw *hw)
+{
+       return hw->core->name;
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_name);
+
 struct clk_hw *__clk_get_hw(struct clk *clk)
 {
        return !clk ? NULL : clk->core->hw;
@@ -290,6 +296,12 @@ u8 __clk_get_num_parents(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(__clk_get_num_parents);
 
+unsigned int clk_hw_get_num_parents(struct clk_hw *hw)
+{
+       return hw->core->num_parents;
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_num_parents);
+
 struct clk *__clk_get_parent(struct clk *clk)
 {
        if (!clk)
@@ -300,6 +312,12 @@ struct clk *__clk_get_parent(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(__clk_get_parent);
 
+struct clk_hw *clk_hw_get_parent(struct clk_hw *hw)
+{
+       return hw->core->parent ? hw->core->parent->hw : NULL;
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_parent);
+
 static struct clk_core *__clk_lookup_subtree(const char *name,
                                             struct clk_core *core)
 {
@@ -370,6 +388,16 @@ struct clk *clk_get_parent_by_index(struct clk *clk, u8 index)
 }
 EXPORT_SYMBOL_GPL(clk_get_parent_by_index);
 
+struct clk_hw *clk_hw_get_parent_by_index(struct clk_hw *hw, unsigned int index)
+{
+       struct clk_core *parent;
+
+       parent = clk_core_get_parent_by_index(hw->core, index);
+
+       return !parent ? NULL : parent->hw;
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_parent_by_index);
+
 unsigned int __clk_get_enable_count(struct clk *clk)
 {
        return !clk ? 0 : clk->core->enable_count;
@@ -405,6 +433,12 @@ unsigned long __clk_get_rate(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(__clk_get_rate);
 
+unsigned long clk_hw_get_rate(struct clk_hw *hw)
+{
+       return clk_core_get_rate_nolock(hw->core);
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_rate);
+
 static unsigned long __clk_get_accuracy(struct clk_core *core)
 {
        if (!core)
@@ -419,6 +453,12 @@ unsigned long __clk_get_flags(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(__clk_get_flags);
 
+unsigned long clk_hw_get_flags(struct clk_hw *hw)
+{
+       return hw->core->flags;
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_flags);
+
 bool __clk_is_prepared(struct clk *clk)
 {
        if (!clk)
@@ -427,6 +467,11 @@ bool __clk_is_prepared(struct clk *clk)
        return clk_core_is_prepared(clk->core);
 }
 
+bool clk_hw_is_prepared(struct clk_hw *hw)
+{
+       return clk_core_is_prepared(hw->core);
+}
+
 bool __clk_is_enabled(struct clk *clk)
 {
        if (!clk)
@@ -861,6 +906,22 @@ unsigned long __clk_round_rate(struct clk *clk, unsigned long rate)
 }
 EXPORT_SYMBOL_GPL(__clk_round_rate);
 
+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);
+       req.rate = rate;
+
+       ret = clk_core_round_rate_nolock(hw->core, &req);
+       if (ret)
+               return 0;
+
+       return req.rate;
+}
+EXPORT_SYMBOL_GPL(clk_hw_round_rate);
+
 /**
  * clk_round_rate - round the given rate for a clk
  * @clk: the clk for which we are rounding a rate