[PATCH 1/4] clk: debug: add support for setting clk_rate from debugfs

[Tero Kristo]

Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
 drivers/clk/clk.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 1c46babeb093..3429680691bd 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -3087,6 +3087,26 @@ static int clk_duty_cycle_show(struct seq_file *s, void *data)
 }
 DEFINE_SHOW_ATTRIBUTE(clk_duty_cycle);
 
+static int clk_dbg_rate_get(void *data, u64 *val)
+{
+	struct clk_core *core = data;
+
+	*val = core->rate;
+
+	return 0;
+}
+
+static int clk_dbg_rate_set(void *data, u64 val)
+{
+	struct clk_core *core = data;
+
+	clk_core_set_rate_nolock(core, val);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(clk_dbg_option_rate, clk_dbg_rate_get, clk_dbg_rate_set, "%llu\n");
+
 static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry)
 {
 	struct dentry *root;
@@ -3097,7 +3117,7 @@ static void clk_debug_create_one(struct clk_core *core, struct dentry *pdentry)
 	root = debugfs_create_dir(core->name, pdentry);
 	core->dentry = root;
 
-	debugfs_create_ulong("clk_rate", 0444, root, &core->rate);
+	debugfs_create_file("clk_rate", 0666, root, core, &clk_dbg_option_rate);
 	debugfs_create_ulong("clk_accuracy", 0444, root, &core->accuracy);
 	debugfs_create_u32("clk_phase", 0444, root, &core->phase);
 	debugfs_create_file("clk_flags", 0444, root, core, &clk_flags_fops);
-- 
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