As we move towards a cleaner split to have clock providers use clk_hw
for all clock operations, while consumers operate on the (per-user)
struct clk handles, we still have cases where in a clock provider
might want to call into high level clk apis which only operate on a
struct clk handle.
To facilitate such needs, have a clk_hw_get_clk() api which can be
used from within clock providers to get access to struct clk handles.
Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
---
drivers/clk/clk.c | 39 +++++++++++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 5 +++++
2 files changed, 44 insertions(+)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 0fb39fe..a6ba77c 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -186,6 +186,45 @@ const char *clk_hw_get_name(const struct clk_hw *hw)
}
EXPORT_SYMBOL_GPL(clk_hw_get_name);
+struct clk *clk_hw_get_clk(struct clk_hw *hw, const char *dev_id,
+ const char *con_id)
+{
+ return __clk_create_clk(hw, dev_id, con_id);
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_clk);
+
+void clk_hw_put_clk(struct clk *clk)
+{
+ __clk_free_clk(clk);
+}
+EXPORT_SYMBOL_GPL(clk_hw_put_clk);
+
+static void devm_clk_hw_put(struct device *dev, void *res)
+{
+ clk_hw_put_clk(*(struct clk **)res);
+}
+
+struct clk *devm_clk_hw_get_clk(struct device *dev, struct clk_hw *hw,
+ const char *con_id)
+{
+ struct clk **ptr, *clk;
+
+ ptr = devres_alloc(devm_clk_hw_put, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ clk = clk_hw_get_clk(hw, dev_name(dev), con_id);
+ if (!IS_ERR(clk)) {
+ *ptr = clk;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return clk;
+}
+EXPORT_SYMBOL_GPL(devm_clk_hw_get_clk);
+
struct clk_hw *__clk_get_hw(struct clk *clk)
{
return !clk ? NULL : clk->core->hw;
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index a428aec..feddf95 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -729,6 +729,11 @@ struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, const char *name,
/* helper functions */
const char *__clk_get_name(const struct clk *clk);
const char *clk_hw_get_name(const struct clk_hw *hw);
+struct clk *clk_hw_get_clk(struct clk_hw *hw, const char *dev_id,
+ const char *con_id);
+void clk_hw_put_clk(struct clk *clk);
+struct clk *devm_clk_hw_get_clk(struct device *dev, struct clk_hw *hw,
+ const char *con_id);
struct clk_hw *__clk_get_hw(struct clk *clk);
unsigned int clk_hw_get_num_parents(const struct clk_hw *hw);
struct clk_hw *clk_hw_get_parent(const struct clk_hw *hw);
--
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