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clk: support hardware-specific debugfs entries

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Add a new clk_ops->debug_init method to allow a clock hardware
driver to populate the clock's debugfs directory with entries
beyond those common for every clock.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Alex Elder 2014-03-21 06:43:56 -05:00 committed by Mike Turquette
parent afbd1a0c30
commit c646cbf10f
2 changed files with 12 additions and 0 deletions
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4
drivers/clk/clk.c
View File

@ -277,6 +277,10 @@ static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry)
if (!d)
goto err_out;
if (clk->ops->debug_init)
if (clk->ops->debug_init(clk->hw, clk->dentry))
goto err_out;
ret = 0;
goto out;

8
include/linux/clk-provider.h
View File

@ -32,6 +32,7 @@
#define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
struct clk_hw;
struct dentry;
/**
* struct clk_ops - Callback operations for hardware clocks; these are to
@ -127,6 +128,12 @@ struct clk_hw;
* separately via calls to .set_parent and .set_rate.
* Returns 0 on success, -EERROR otherwise.
*
* @debug_init: Set up type-specific debugfs entries for this clock. This
* is called once, after the debugfs directory entry for this
* clock has been created. The dentry pointer representing that
* directory is provided as an argument. Called with
* prepare_lock held. Returns 0 on success, -EERROR otherwise.
*
*
* The clk_enable/clk_disable and clk_prepare/clk_unprepare pairs allow
* implementations to split any work between atomic (enable) and sleepable
@ -165,6 +172,7 @@ struct clk_ops {
unsigned long (*recalc_accuracy)(struct clk_hw *hw,
unsigned long parent_accuracy);
void (*init)(struct clk_hw *hw);
int (*debug_init)(struct clk_hw *hw, struct dentry *dentry);
};
/**