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clk: divider: Add hw based registration APIs
Add registration APIs in the clk 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: Stephen Boyd <sboyd@codeaurora.org>
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@ -426,15 +426,16 @@ const struct clk_ops clk_divider_ro_ops = {
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};
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EXPORT_SYMBOL_GPL(clk_divider_ro_ops);
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static struct clk *_register_divider(struct device *dev, const char *name,
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static struct clk_hw *_register_divider(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, const struct clk_div_table *table,
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spinlock_t *lock)
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{
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struct clk_divider *div;
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struct clk *clk;
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struct clk_hw *hw;
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struct clk_init_data init;
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int ret;
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if (clk_divider_flags & CLK_DIVIDER_HIWORD_MASK) {
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if (width + shift > 16) {
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@ -467,12 +468,14 @@ static struct clk *_register_divider(struct device *dev, const char *name,
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div->table = table;
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/* register the clock */
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clk = clk_register(dev, &div->hw);
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if (IS_ERR(clk))
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hw = &div->hw;
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ret = clk_hw_register(dev, hw);
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if (ret) {
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kfree(div);
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hw = ERR_PTR(ret);
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}
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return clk;
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return hw;
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}
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/**
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@ -491,11 +494,38 @@ struct clk *clk_register_divider(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, spinlock_t *lock)
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{
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struct clk_hw *hw;
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hw = _register_divider(dev, name, parent_name, flags, reg, shift,
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width, clk_divider_flags, NULL, lock);
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if (IS_ERR(hw))
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return ERR_CAST(hw);
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return hw->clk;
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}
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EXPORT_SYMBOL_GPL(clk_register_divider);
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/**
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* clk_hw_register_divider - register a divider clock with the clock framework
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* @dev: device registering this clock
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* @name: name of this clock
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* @parent_name: name of clock's parent
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* @flags: framework-specific flags
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* @reg: register address to adjust divider
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* @shift: number of bits to shift the bitfield
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* @width: width of the bitfield
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* @clk_divider_flags: divider-specific flags for this clock
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* @lock: shared register lock for this clock
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*/
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struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, spinlock_t *lock)
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{
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return _register_divider(dev, name, parent_name, flags, reg, shift,
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width, clk_divider_flags, NULL, lock);
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}
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EXPORT_SYMBOL_GPL(clk_register_divider);
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EXPORT_SYMBOL_GPL(clk_hw_register_divider);
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/**
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* clk_register_divider_table - register a table based divider clock with
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@ -516,11 +546,41 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, const struct clk_div_table *table,
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spinlock_t *lock)
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{
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struct clk_hw *hw;
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hw = _register_divider(dev, name, parent_name, flags, reg, shift,
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width, clk_divider_flags, table, lock);
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if (IS_ERR(hw))
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return ERR_CAST(hw);
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return hw->clk;
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}
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EXPORT_SYMBOL_GPL(clk_register_divider_table);
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/**
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* clk_hw_register_divider_table - register a table based divider clock with
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* the clock framework
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* @dev: device registering this clock
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* @name: name of this clock
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* @parent_name: name of clock's parent
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* @flags: framework-specific flags
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* @reg: register address to adjust divider
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* @shift: number of bits to shift the bitfield
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* @width: width of the bitfield
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* @clk_divider_flags: divider-specific flags for this clock
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* @table: array of divider/value pairs ending with a div set to 0
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* @lock: shared register lock for this clock
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*/
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struct clk_hw *clk_hw_register_divider_table(struct device *dev,
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const char *name, const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, const struct clk_div_table *table,
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spinlock_t *lock)
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{
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return _register_divider(dev, name, parent_name, flags, reg, shift,
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width, clk_divider_flags, table, lock);
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}
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EXPORT_SYMBOL_GPL(clk_register_divider_table);
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EXPORT_SYMBOL_GPL(clk_hw_register_divider_table);
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void clk_unregister_divider(struct clk *clk)
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{
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@ -537,3 +597,18 @@ void clk_unregister_divider(struct clk *clk)
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kfree(div);
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}
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EXPORT_SYMBOL_GPL(clk_unregister_divider);
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/**
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* clk_hw_unregister_divider - unregister a clk divider
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* @hw: hardware-specific clock data to unregister
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*/
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void clk_hw_unregister_divider(struct clk_hw *hw)
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{
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struct clk_divider *div;
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div = to_clk_divider(hw);
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clk_hw_unregister(hw);
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kfree(div);
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}
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EXPORT_SYMBOL_GPL(clk_hw_unregister_divider);
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@ -407,12 +407,22 @@ struct clk *clk_register_divider(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, spinlock_t *lock);
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struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, spinlock_t *lock);
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struct clk *clk_register_divider_table(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, const struct clk_div_table *table,
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spinlock_t *lock);
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struct clk_hw *clk_hw_register_divider_table(struct device *dev,
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const char *name, const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 shift, u8 width,
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u8 clk_divider_flags, const struct clk_div_table *table,
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spinlock_t *lock);
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void clk_unregister_divider(struct clk *clk);
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void clk_hw_unregister_divider(struct clk_hw *hw);
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/**
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* struct clk_mux - multiplexer clock
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