[PATCH] clk: Add clk_parent entry in debugfs
From: Leonard Crestez <hidden>
Date: 2019-05-24 08:25:31
Also in:
linux-clk
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
This allows to easily determine the parent in shell scripts without parsing more complex files. Add the clk_parent file unconditionally because this information is useful for more than just muxes. Signed-off-by: Leonard Crestez <redacted> --- drivers/clk/clk.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index aa51756fd4d6..94a93b07dd37 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c@@ -3009,10 +3009,21 @@ static int possible_parents_show(struct seq_file *s, void *data) return 0; } 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; struct clk_duty *duty = &core->duty;
@@ -3040,10 +3051,11 @@ static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry) debugfs_create_u32("clk_enable_count", 0444, root, &core->enable_count); debugfs_create_u32("clk_protect_count", 0444, root, &core->protect_count); debugfs_create_u32("clk_notifier_count", 0444, root, &core->notifier_count); debugfs_create_file("clk_duty_cycle", 0444, root, core, &clk_duty_cycle_fops); + debugfs_create_file("clk_parent", 0444, root, core, ¤t_parent_fops); if (core->num_parents > 1) debugfs_create_file("clk_possible_parents", 0444, root, core, &possible_parents_fops);
--
2.17.1
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