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opp: Expose of-node's name in debugfs

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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>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Viresh Kumar 2022-02-10 14:37:53 +05:30
parent e783362eb5
commit 021dbecabc
2 changed files with 6 additions and 0 deletions
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5
drivers/opp/debugfs.c
View file

@ -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);

1
drivers/opp/opp.h
View file

@ -96,6 +96,7 @@ struct dev_pm_opp {
#ifdef CONFIG_DEBUG_FS
struct dentry *dentry;
const char *of_name;
#endif
};