diff mbox series

opp: Expose of-node's name in debugfs

Message ID 6d4ebbbe09f97c9f97834c293a70f6a8a4d36709.1644487134.git.viresh.kumar@linaro.org
State Accepted
Commit 021dbecabc93b1610b5db989d52a94e0c6671136
Headers show
Series opp: Expose of-node's name in debugfs | expand

Commit Message

Viresh Kumar Feb. 10, 2022, 9:59 a.m. UTC 
It is difficult to find which OPPs are active at the moment, specially
if there are multiple OPPs with same frequency available in the device
tree (controlled by supported hardware feature).

Expose name of the DT node to find out the exact OPP.

While at it, also expose level field.

Reported-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/opp/debugfs.c | 5 +++++
 drivers/opp/opp.h     | 1 +
 2 files changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c
index 596c185b5dda..b5f2f9f39392 100644
--- a/drivers/opp/debugfs.c
+++ b/drivers/opp/debugfs.c
@@ -10,6 +10,7 @@ 
 #include <linux/debugfs.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/of.h>
 #include <linux/init.h>
 #include <linux/limits.h>
 #include <linux/slab.h>
@@ -131,9 +132,13 @@  void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
 	debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
 	debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
 	debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
+	debugfs_create_u32("level", S_IRUGO, d, &opp->level);
 	debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
 			     &opp->clock_latency_ns);
 
+	opp->of_name = of_node_full_name(opp->np);
+	debugfs_create_str("of_name", S_IRUGO, d, (char **)&opp->of_name);
+
 	opp_debug_create_supplies(opp, opp_table, d);
 	opp_debug_create_bw(opp, opp_table, d);
 
diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h
index 407c3bfe51d9..45e3a55239a1 100644
--- a/drivers/opp/opp.h
+++ b/drivers/opp/opp.h
@@ -96,6 +96,7 @@  struct dev_pm_opp {
 
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *dentry;
+	const char *of_name;
 #endif
 };