This will simplify drivers which would only unregister the clk in their
remove() op.
Signed-off-by: Michael Walle <michael@xxxxxxxx>
---
Changes since v1:
- new patch
drivers/clk/clk-divider.c | 34 ++++++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 27 +++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 8de12cb0c43d..c499799693cc 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -8,6 +8,7 @@
*/
#include <linux/clk-provider.h>
+#include <linux/device.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
@@ -578,3 +579,36 @@ void clk_hw_unregister_divider(struct clk_hw *hw)
kfree(div);
}
EXPORT_SYMBOL_GPL(clk_hw_unregister_divider);
+
+static void devm_clk_hw_release_divider(struct device *dev, void *res)
+{
+ clk_hw_unregister_divider(*(struct clk_hw **)res);
+}
+
+struct clk_hw *__devm_clk_hw_register_divider(struct device *dev,
+ struct device_node *np, const char *name,
+ const char *parent_name, const struct clk_hw *parent_hw,
+ const struct clk_parent_data *parent_data, unsigned long flags,
+ void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+ const struct clk_div_table *table, spinlock_t *lock)
+{
+ struct clk_hw **ptr, *hw;
+
+ ptr = devres_alloc(devm_clk_hw_release_divider, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ hw = __clk_hw_register_divider(dev, np, name, parent_name, parent_hw,
+ parent_data, flags, reg, shift, width,
+ clk_divider_flags, table, lock);
+
+ if (!IS_ERR(hw)) {
+ *ptr = hw;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return hw;
+}
+EXPORT_SYMBOL_GPL(__devm_clk_hw_register_divider);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 03a5de5f99f4..9ead4633c8c8 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -639,6 +639,12 @@ struct clk_hw *__clk_hw_register_divider(struct device *dev,
const struct clk_parent_data *parent_data, unsigned long flags,
void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
const struct clk_div_table *table, spinlock_t *lock);
+struct clk_hw *__devm_clk_hw_register_divider(struct device *dev,
+ struct device_node *np, const char *name,
+ const char *parent_name, const struct clk_hw *parent_hw,
+ const struct clk_parent_data *parent_data, unsigned long flags,
+ void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+ const struct clk_div_table *table, spinlock_t *lock);
struct clk *clk_register_divider_table(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
@@ -779,6 +785,27 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
(parent_data), (flags), (reg), (shift), \
(width), (clk_divider_flags), (table), \
(lock))
+/**
+ * devm_clk_hw_register_divider_table - register a table based divider clock
+ * with the clock framework (devres variant)
+ * @dev: device registering this clock
+ * @name: name of this clock
+ * @parent_name: name of clock's parent
+ * @flags: framework-specific flags
+ * @reg: register address to adjust divider
+ * @shift: number of bits to shift the bitfield
+ * @width: width of the bitfield
+ * @clk_divider_flags: divider-specific flags for this clock
+ * @table: array of divider/value pairs ending with a div set to 0
+ * @lock: shared register lock for this clock
+ */
+#define devm_clk_hw_register_divider_table(dev, name, parent_name, flags, \
+ reg, shift, width, \
+ clk_divider_flags, table, lock) \
+ __devm_clk_hw_register_divider((dev), NULL, (name), (parent_name), \
+ NULL, NULL, (flags), (reg), (shift), \
+ (width), (clk_divider_flags), (table), \
+ (lock))
void clk_unregister_divider(struct clk *clk);
void clk_hw_unregister_divider(struct clk_hw *hw);
--
2.20.1
