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Commit b9b1975f authored by Taniya Das's avatar Taniya Das
Browse files

clk: Add support to allow client to print all enabled clocks 



The clock api clock_debug_print_enabled would allow any client like low
power driver to print all the enabled clocks which include the
prepare_count/enable_count/rate/rate max vote.

Change-Id: I936496e553bc958c10e743fd8a225ffc7fbc0f79
Signed-off-by: default avatarTaniya Das <tdas@codeaurora.org>
parent dba9af81

drivers/clk/clk.c

+20 −0
Original line number Diff line number Diff line
@@ -2267,6 +2267,7 @@ EXPORT_SYMBOL_GPL(clk_set_flags); 


static struct dentry *rootdir;

static int inited = 0;

static u32 debug_suspend;

static DEFINE_MUTEX(clk_debug_lock);

static HLIST_HEAD(clk_debug_list);
@@ -2854,6 +2855,19 @@ struct dentry *clk_debugfs_add_file(struct clk_hw *hw, char *name, umode_t mode, 
}

EXPORT_SYMBOL_GPL(clk_debugfs_add_file);



/*

 * Print the names of all enabled clocks and their parents if

 * debug_suspend is set from debugfs.

 */

void clock_debug_print_enabled(void)

{

	if (likely(!debug_suspend))

		return;



	clock_debug_print_enabled_clocks(NULL);

}

EXPORT_SYMBOL_GPL(clock_debug_print_enabled);



/**

 * clk_debug_init - lazily populate the debugfs clk directory

 *
@@ -2898,6 +2912,12 @@ static int __init clk_debug_init(void) 
	if (!d)

		return -ENOMEM;





	d = debugfs_create_u32("debug_suspend", S_IRUGO | S_IWUSR,

						rootdir, &debug_suspend);

	if (!d)

		return -ENOMEM;



	mutex_lock(&clk_debug_lock);

	hlist_for_each_entry(core, &clk_debug_list, debug_node)

		clk_debug_create_one(core, rootdir);

drivers/clk/clk.h

+4 −0
Original line number Diff line number Diff line
@@ -20,6 +20,10 @@ struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec, 
struct clk *__clk_create_clk(struct clk_hw *hw, const char *dev_id,

			     const char *con_id);

void __clk_free_clk(struct clk *clk);



/* Debugfs API to print the enabled clocks */

void clock_debug_print_enabled(void);



#else

/* All these casts to avoid ifdefs in clkdev... */

static inline struct clk *