clk: divider: add devm_clk_hw_register_divider_table() (26792699) · Commits · 戴 / test

drivers/clk/clk-divider.c

+34 −0

Original line number	Diff line number	Diff line
		@@ -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);

include/linux/clk-provider.h

+27 −0

Original line number	Diff line number	Diff line
		@@ -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);

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