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clk: fixed-factor: Introduce devm_clk_hw_register_fixed_factor_index()

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Add an API for a fixed factor clk that uses an index for the parent
instead of a string name. This allows us to move drivers away from the
string based method of describing parents and use the DT/firmware based
method instead.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: devicetree@vger.kernel.org
Link: https://lore.kernel.org/r/20220226040723.143705-2-marex@denx.de
[sboyd@kernel.org: Expose a new API instead of internal function]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Marek Vasut 2022-02-26 05:07:22 +01:00 committed by Stephen Boyd
parent 26c1bc67aa
commit 0c125f87a8
2 changed files with 25 additions and 0 deletions
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22
drivers/clk/clk-fixed-factor.c
View File

@ -131,6 +131,28 @@ __clk_hw_register_fixed_factor(struct device *dev, struct device_node *np,
return hw;
}
/**
* devm_clk_hw_register_fixed_factor_index - Register a fixed factor clock with
* parent from DT index
* @dev: device that is registering this clock
* @name: name of this clock
* @index: index of phandle in @dev 'clocks' property
* @flags: fixed factor flags
* @mult: multiplier
* @div: divider
*
* Return: Pointer to fixed factor clk_hw structure that was registered or
* an error pointer.
*/
struct clk_hw *devm_clk_hw_register_fixed_factor_index(struct device *dev,
const char *name, unsigned int index, unsigned long flags,
unsigned int mult, unsigned int div)
{
return __clk_hw_register_fixed_factor(dev, NULL, name, NULL, index,
flags, mult, div, true);
}
EXPORT_SYMBOL_GPL(devm_clk_hw_register_fixed_factor_index);
struct clk_hw *clk_hw_register_fixed_factor(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div)

3
include/linux/clk-provider.h
View File

@ -1003,6 +1003,9 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw);
struct clk_hw *devm_clk_hw_register_fixed_factor(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned int mult, unsigned int div);
struct clk_hw *devm_clk_hw_register_fixed_factor_index(struct device *dev,
const char *name, unsigned int index, unsigned long flags,
unsigned int mult, unsigned int div);
/**
* struct clk_fractional_divider - adjustable fractional divider clock
*