mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

opp: Expose of-node's name in debugfs 

[ Upstream commit 021dbecabc ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Viresh Kumar 2022-02-10 14:37:53 +05:30 committed by Greg Kroah-Hartman
parent d76c0f10bc
commit c6047d1bc5
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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
};