2 files changed, 69 insertions, 0 deletions

diff --git a/include/trace/events/asoc.h b/include/trace/events/asoc.h
new file mode 100644
index 0000000..93c3371
--- /dev/null
+++ b/include/trace/events/asoc.h
@@ -0,0 +1,64 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM asoc
+
+#if !defined(_TRACE_ASOC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_ASOC_H
+
+#include <linux/ktime.h>
+#include <linux/tracepoint.h>
+
+struct snd_soc_codec;
+
+/*
+ * Log register events
+ */
+DECLARE_EVENT_CLASS(snd_soc_reg,
+
+	TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+		 unsigned int val),
+
+	TP_ARGS(codec, reg, val),
+
+	TP_STRUCT__entry(
+		__string(	name,		codec->name	)
+		__field(	int,		id		)
+		__field(	unsigned int,	reg		)
+		__field(	unsigned int,	val		)
+	),
+
+	TP_fast_assign(
+		__assign_str(name, codec->name);
+		__entry->id = codec->id;
+		__entry->reg = reg;
+		__entry->val = val;
+	),
+
+	TP_printk("codec=%s.%d reg=%x val=%x", __get_str(name),
+		  (int)__entry->id, (unsigned int)__entry->reg,
+		  (unsigned int)__entry->val)
+);
+
+DEFINE_EVENT(snd_soc_reg, snd_soc_reg_write,
+
+	TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+		 unsigned int val),
+
+	TP_ARGS(codec, reg, val)
+
+);
+
+DEFINE_EVENT(snd_soc_reg, snd_soc_reg_read,
+
+	TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+		 unsigned int val),
+
+	TP_ARGS(codec, reg, val)
+
+);
+
+
+
+#endif /* _TRACE_ASOC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index c18ce1d..700a6d5 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -39,6 +39,9 @@
 #include <sound/soc-dapm.h>
 #include <sound/initval.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/asoc.h>
+
 #define NAME_SIZE	32
 
 static DEFINE_MUTEX(pcm_mutex);
@@ -1914,6 +1917,7 @@ unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
 
 	ret = codec->driver->read(codec, reg);
 	dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
+	trace_snd_soc_reg_read(codec, reg, ret);
 
 	return ret;
 }
@@ -1923,6 +1927,7 @@ unsigned int snd_soc_write(struct snd_soc_codec *codec,
 			   unsigned int reg, unsigned int val)
 {
 	dev_dbg(codec->dev, "write %x = %x\n", reg, val);
+	trace_snd_soc_reg_write(codec, reg, val);
 	return codec->driver->write(codec, reg, val);
 }
 EXPORT_SYMBOL_GPL(snd_soc_write);