diff options
author | Stephen Boyd <sboyd@kernel.org> | 2019-08-30 08:09:23 -0700 |
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committer | Stephen Boyd <sboyd@kernel.org> | 2020-01-07 23:08:02 -0800 |
commit | ff258817137a9004e2fbee2b36df58a4fc7d0f7e (patch) | |
tree | b1828fd6ca545272c481944693f6328915c131d5 /drivers | |
parent | 194efb6e2667cc226fa92a6a4ab5d2298b5b85d9 (diff) | |
download | linux-ff258817137a9004e2fbee2b36df58a4fc7d0f7e.tar.bz2 |
clk: divider: Add support for specifying parents via DT/pointers
After commit fc0c209c147f ("clk: Allow parents to be specified without
string names") we can use DT or direct clk_hw pointers to specify
parents. Create a generic function that shouldn't be used very often to
encode the multitude of ways of registering a divider clk with different
parent information. Then add a bunch of wrapper macros that only pass
down what needs to be passed down to the generic function to support
this with less arguments.
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190830150923.259497-13-sboyd@kernel.org
[sboyd@kernel.org: Export __clk_hw_register_divider]
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/clk/clk-divider.c | 91 |
1 files changed, 10 insertions, 81 deletions
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index 098b2b01f0af..8de12cb0c43d 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -463,11 +463,12 @@ const struct clk_ops clk_divider_ro_ops = { }; EXPORT_SYMBOL_GPL(clk_divider_ro_ops); -static struct clk_hw *_register_divider(struct device *dev, const char *name, - const char *parent_name, 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 *__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_divider *div; struct clk_hw *hw; @@ -514,55 +515,7 @@ static struct clk_hw *_register_divider(struct device *dev, const char *name, return hw; } - -/** - * clk_register_divider - register a divider clock with the clock framework - * @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 - * @lock: shared register lock for this clock - */ -struct clk *clk_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock) -{ - struct clk_hw *hw; - - hw = _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, NULL, lock); - if (IS_ERR(hw)) - return ERR_CAST(hw); - return hw->clk; -} -EXPORT_SYMBOL_GPL(clk_register_divider); - -/** - * clk_hw_register_divider - register a divider clock with the clock framework - * @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 - * @lock: shared register lock for this clock - */ -struct clk_hw *clk_hw_register_divider(struct device *dev, const char *name, - const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, spinlock_t *lock) -{ - return _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, NULL, lock); -} -EXPORT_SYMBOL_GPL(clk_hw_register_divider); +EXPORT_SYMBOL_GPL(__clk_hw_register_divider); /** * clk_register_divider_table - register a table based divider clock with @@ -586,39 +539,15 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name, { struct clk_hw *hw; - hw = _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, table, lock); + hw = __clk_hw_register_divider(dev, NULL, name, parent_name, NULL, + NULL, flags, reg, shift, width, clk_divider_flags, + table, lock); if (IS_ERR(hw)) return ERR_CAST(hw); return hw->clk; } EXPORT_SYMBOL_GPL(clk_register_divider_table); -/** - * clk_hw_register_divider_table - register a table based divider clock with - * the clock framework - * @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 - */ -struct clk_hw *clk_hw_register_divider_table(struct device *dev, - const char *name, const char *parent_name, unsigned long flags, - void __iomem *reg, u8 shift, u8 width, - u8 clk_divider_flags, const struct clk_div_table *table, - spinlock_t *lock) -{ - return _register_divider(dev, name, parent_name, flags, reg, shift, - width, clk_divider_flags, table, lock); -} -EXPORT_SYMBOL_GPL(clk_hw_register_divider_table); - void clk_unregister_divider(struct clk *clk) { struct clk_divider *div; |