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-rw-r--r--drivers/base/regmap/regcache.c12
-rw-r--r--include/trace/events/regmap.h9
2 files changed, 19 insertions, 2 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 1ca2d7a1051..1ead66186b7 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -193,13 +193,21 @@ void regcache_exit(struct regmap *map)
int regcache_read(struct regmap *map,
unsigned int reg, unsigned int *value)
{
+ int ret;
+
if (map->cache_type == REGCACHE_NONE)
return -ENOSYS;
BUG_ON(!map->cache_ops);
- if (!regmap_volatile(map, reg))
- return map->cache_ops->read(map, reg, value);
+ if (!regmap_volatile(map, reg)) {
+ ret = map->cache_ops->read(map, reg, value);
+
+ if (ret == 0)
+ trace_regmap_reg_read_cache(map->dev, reg, *value);
+
+ return ret;
+ }
return -EINVAL;
}
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index 1e3193b8fcc..12fbf43524e 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -55,6 +55,15 @@ DEFINE_EVENT(regmap_reg, regmap_reg_read,
);
+DEFINE_EVENT(regmap_reg, regmap_reg_read_cache,
+
+ TP_PROTO(struct device *dev, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(dev, reg, val)
+
+);
+
DECLARE_EVENT_CLASS(regmap_block,
TP_PROTO(struct device *dev, unsigned int reg, int count),