clk: Add clk_parent entry in debugfs (e5e89247) · Commits · 戴 / test

This allows to easily determine the parent in shell scripts without parsing more complex files. Add the clk_parent file for all clks which can have a parent, not just muxes. This way it can be used to determine the clk tree structure without parsing more complex files. Signed-off-by:

Leonard Crestez <leonard.crestez@nxp.com> Signed-off-by:

Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -3011,6 +3011,17 @@ static int possible_parents_show(struct seq_file s, void data)
		}
		DEFINE_SHOW_ATTRIBUTE(possible_parents);

		static int current_parent_show(struct seq_file s, void data)
		{
		struct clk_core *core = s->private;

		if (core->parent)
		seq_printf(s, "%s\n", core->parent->name);

		return 0;
		}
		DEFINE_SHOW_ATTRIBUTE(current_parent);

		static int clk_duty_cycle_show(struct seq_file s, void data)
		{
		struct clk_core *core = s->private;
		@@ -3043,6 +3054,10 @@ static void clk_debug_create_one(struct clk_core core, struct dentry pdentry)
		debugfs_create_file("clk_duty_cycle", 0444, root, core,
		&clk_duty_cycle_fops);

		if (core->num_parents > 0)
		debugfs_create_file("clk_parent", 0444, root, core,
		&current_parent_fops);

		if (core->num_parents > 1)
		debugfs_create_file("clk_possible_parents", 0444, root, core,
		&possible_parents_fops);

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