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clk: fixed-rate: Add hw based registration APIs

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Add registration APIs in the clk fixed-rate 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>
This commit is contained in:
Stephen Boyd 2016-02-07 00:34:13 -08:00
parent b120743a64
commit 26ef56be9e
2 changed files with 43 additions and 8 deletions
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44
drivers/clk/clk-fixed-rate.c
View file

@ -45,8 +45,8 @@ const struct clk_ops clk_fixed_rate_ops = {
EXPORT_SYMBOL_GPL(clk_fixed_rate_ops);
/**
* clk_register_fixed_rate_with_accuracy - register fixed-rate clock with the
* clock framework
* clk_hw_register_fixed_rate_with_accuracy - register fixed-rate clock with
* the clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
@ -54,13 +54,14 @@ EXPORT_SYMBOL_GPL(clk_fixed_rate_ops);
* @fixed_rate: non-adjustable clock rate
* @fixed_accuracy: non-adjustable clock rate
*/
struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy)
{
struct clk_fixed_rate *fixed;
struct clk *clk;
struct clk_hw *hw;
struct clk_init_data init;
int ret;
/* allocate fixed-rate clock */
fixed = kzalloc(sizeof(*fixed), GFP_KERNEL);
@ -79,22 +80,49 @@ struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
fixed->hw.init = &init;
/* register the clock */
clk = clk_register(dev, &fixed->hw);
if (IS_ERR(clk))
hw = &fixed->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(fixed);
hw = ERR_PTR(ret);
}
return clk;
return hw;
}
EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate_with_accuracy);
struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy)
{
struct clk_hw *hw;
hw = clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name,
flags, fixed_rate, fixed_accuracy);
if (IS_ERR(hw))
return ERR_CAST(hw);
return hw->clk;
}
EXPORT_SYMBOL_GPL(clk_register_fixed_rate_with_accuracy);
/**
* clk_register_fixed_rate - register fixed-rate clock with the clock framework
* clk_hw_register_fixed_rate - register fixed-rate clock with the clock
* framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of clock's parent
* @flags: framework-specific flags
* @fixed_rate: non-adjustable clock rate
*/
struct clk_hw *clk_hw_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate)
{
return clk_hw_register_fixed_rate_with_accuracy(dev, name, parent_name,
flags, fixed_rate, 0);
}
EXPORT_SYMBOL_GPL(clk_hw_register_fixed_rate);
struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate)

7
include/linux/clk-provider.h
View file

@ -282,10 +282,17 @@ extern const struct clk_ops clk_fixed_rate_ops;
struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate);
struct clk_hw *clk_hw_register_fixed_rate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
unsigned long fixed_rate);
struct clk *clk_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy);
void clk_unregister_fixed_rate(struct clk *clk);
struct clk_hw *clk_hw_register_fixed_rate_with_accuracy(struct device *dev,
const char *name, const char *parent_name, unsigned long flags,
unsigned long fixed_rate, unsigned long fixed_accuracy);
void of_fixed_clk_setup(struct device_node *np);
/**