Commit c646cbf1 authored by Alex Elder's avatar Alex Elder Committed by Mike Turquette
Browse files

clk: support hardware-specific debugfs entries 



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: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent afbd1a0c

drivers/clk/clk.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/clk-provider.h

+8 −0
Original line number Diff line number Diff line
@@ -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);

};



/**