Commit 39b44cff authored by Stephen Boyd's avatar Stephen Boyd
Browse files

clk: fractional-divider: Add hw based registration APIs 



Add registration APIs in the clk fractional divider code to
return struct clk_hw pointers instead of struct clk pointers.
This way we hide the struct clk pointer from providers unless
they need to use consumer facing APIs.

Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 0759ac8a

drivers/clk/clk-fractional-divider.c

+35 −5
Original line number Diff line number Diff line
@@ -116,14 +116,15 @@ const struct clk_ops clk_fractional_divider_ops = { 
};

EXPORT_SYMBOL_GPL(clk_fractional_divider_ops);



struct clk *clk_register_fractional_divider(struct device *dev,

struct clk_hw *clk_hw_register_fractional_divider(struct device *dev,

		const char *name, const char *parent_name, unsigned long flags,

		void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,

		u8 clk_divider_flags, spinlock_t *lock)

{

	struct clk_fractional_divider *fd;

	struct clk_init_data init;

	struct clk *clk;

	struct clk_hw *hw;

	int ret;



	fd = kzalloc(sizeof(*fd), GFP_KERNEL);

	if (!fd)
@@ -146,10 +147,39 @@ struct clk *clk_register_fractional_divider(struct device *dev, 
	fd->lock = lock;

	fd->hw.init = &init;



	clk = clk_register(dev, &fd->hw);

	if (IS_ERR(clk))

	hw = &fd->hw;

	ret = clk_hw_register(dev, hw);

	if (ret) {

		kfree(fd);

		hw = ERR_PTR(ret);

	}



	return hw;

}

EXPORT_SYMBOL_GPL(clk_hw_register_fractional_divider);



	return clk;

struct clk *clk_register_fractional_divider(struct device *dev,

		const char *name, const char *parent_name, unsigned long flags,

		void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,

		u8 clk_divider_flags, spinlock_t *lock)

{

	struct clk_hw *hw;



	hw = clk_hw_register_fractional_divider(dev, name, parent_name, flags,

			reg, mshift, mwidth, nshift, nwidth, clk_divider_flags,

			lock);

	if (IS_ERR(hw))

		return ERR_CAST(hw);

	return hw->clk;

}

EXPORT_SYMBOL_GPL(clk_register_fractional_divider);



void clk_hw_unregister_fractional_divider(struct clk_hw *hw)

{

	struct clk_fractional_divider *fd;



	fd = to_clk_fd(hw);



	clk_hw_unregister(hw);

	kfree(fd);

}

include/linux/clk-provider.h

+5 −0
Original line number Diff line number Diff line
@@ -563,6 +563,11 @@ struct clk *clk_register_fractional_divider(struct device *dev, 
		const char *name, const char *parent_name, unsigned long flags,

		void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,

		u8 clk_divider_flags, spinlock_t *lock);

struct clk_hw *clk_hw_register_fractional_divider(struct device *dev,

		const char *name, const char *parent_name, unsigned long flags,

		void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth,

		u8 clk_divider_flags, spinlock_t *lock);

void clk_hw_unregister_fractional_divider(struct clk_hw *hw);



/**

 * struct clk_multiplier - adjustable multiplier clock

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